mysqld.cc 206 KB
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/* Copyright (C) 2000-2003 MySQL AB
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   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#include "mysql_priv.h"
#include <m_ctype.h>
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#include <my_dir.h>
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#include "sql_acl.h"
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#include "slave.h"
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#include "sql_repl.h"
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#include "repl_failsafe.h"
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#include "stacktrace.h"
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#ifdef HAVE_BERKELEY_DB
#include "ha_berkeley.h"
#endif
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#ifdef HAVE_INNOBASE_DB
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#include "ha_innodb.h"
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#endif
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#include "ha_myisam.h"
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#ifdef HAVE_ISAM
#include "ha_isam.h"
#endif
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#include <nisam.h>
#include <thr_alarm.h>
#include <ft_global.h>
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#include <errmsg.h>
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#define mysqld_charset &my_charset_latin1
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#ifndef DBUG_OFF
#define ONE_THREAD
#endif

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#define SHUTDOWN_THD
#define MAIN_THD
#define SIGNAL_THD

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#ifdef HAVE_purify
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#define IF_PURIFY(A,B) (A)
#else
#define IF_PURIFY(A,B) (B)
#endif

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#ifndef INADDR_NONE
#define INADDR_NONE -1				// Error value from inet_addr
#endif

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/* stack traces are only supported on linux intel */
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#if defined(__linux__)  && defined(__i386__) && defined(USE_PSTACK)
#define	HAVE_STACK_TRACE_ON_SEGV
#include "../pstack/pstack.h"
char pstack_file_name[80];
#endif /* __linux__ */

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/* We have HAVE_purify below as this speeds up the shutdown of MySQL */

#if defined(HAVE_DEC_3_2_THREADS) || defined(SIGNALS_DONT_BREAK_READ) || defined(HAVE_purify) && defined(__linux__)
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#define HAVE_CLOSE_SERVER_SOCK 1
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#endif
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extern "C" {					// Because of SCO 3.2V4.2
#include <errno.h>
#include <sys/stat.h>
#ifndef __GNU_LIBRARY__
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#define __GNU_LIBRARY__				// Skip warnings in getopt.h
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#endif
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#include <my_getopt.h>
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#ifdef HAVE_SYSENT_H
#include <sysent.h>
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>				// For getpwent
#endif
#ifdef HAVE_GRP_H
#include <grp.h>
#endif

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#if defined(OS2)
#  include <sys/un.h>
#elif !defined( __WIN__)
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#  ifndef __NETWARE__
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#include <sys/resource.h>
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#  endif /* __NETWARE__ */
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#ifdef HAVE_SYS_UN_H
#  include <sys/un.h>
#endif
#include <netdb.h>
#ifdef HAVE_SELECT_H
#  include <select.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <sys/utsname.h>
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#endif /* __WIN__ */
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#ifdef HAVE_LIBWRAP
#include <tcpd.h>
#include <syslog.h>
#ifdef NEED_SYS_SYSLOG_H
#include <sys/syslog.h>
#endif /* NEED_SYS_SYSLOG_H */
int allow_severity = LOG_INFO;
int deny_severity = LOG_WARNING;
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#ifdef __STDC__
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#define my_fromhost(A)	   fromhost(A)
#define my_hosts_access(A) hosts_access(A)
#define my_eval_client(A)  eval_client(A)
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#else
#define my_fromhost(A)	   fromhost()
#define my_hosts_access(A) hosts_access()
#define my_eval_client(A)  eval_client()
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#endif /* __STDC__ */
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#endif /* HAVE_LIBWRAP */

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#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif

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#ifdef __NETWARE__
#include <nks/vm.h>
#include <library.h>
#include <monitor.h>

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static event_handle_t eh;
static Report_t ref;
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#endif /* __NETWARE__ */

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#ifdef _AIX41
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int initgroups(const char *,unsigned int);
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#endif

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#if defined(__FreeBSD__) && defined(HAVE_IEEEFP_H)
#include <ieeefp.h>
#ifdef HAVE_FP_EXCEPT				// Fix type conflict
typedef fp_except fp_except_t;
#endif

  /* We can't handle floating point expections with threads, so disable
     this on freebsd
  */

inline void reset_floating_point_exceptions()
{
  /* Don't fall for overflow, underflow,divide-by-zero or loss of precision */
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#if defined(__i386__)
  fpsetmask(~(FP_X_INV | FP_X_DNML | FP_X_OFL | FP_X_UFL | FP_X_DZ |
	      FP_X_IMP));
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#else
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 fpsetmask(~(FP_X_INV |             FP_X_OFL | FP_X_UFL | FP_X_DZ |
	     FP_X_IMP));
#endif
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}
#else
#define reset_floating_point_exceptions()
#endif /* __FreeBSD__ && HAVE_IEEEFP_H */

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} /* cplusplus */

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#if defined(HAVE_LINUXTHREADS)
#define THR_KILL_SIGNAL SIGINT
#else
#define THR_KILL_SIGNAL SIGUSR2		// Can't use this with LinuxThreads
#endif
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#define MYSQL_KILL_SIGNAL SIGTERM
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#ifdef HAVE_GLIBC2_STYLE_GETHOSTBYNAME_R
#include <sys/types.h>
#else
#include <my_pthread.h>			// For thr_setconcurency()
#endif
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#if defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE) && !defined(HAVE_mit_thread)
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#define SET_RLIMIT_NOFILE
#endif

#ifdef SOLARIS
extern "C" int gethostname(char *name, int namelen);
#endif


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/* Set prefix for windows binary */
#ifdef __WIN__
#undef MYSQL_SERVER_SUFFIX
#ifdef __NT__
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#if defined(HAVE_BERKELEY_DB)
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#define MYSQL_SERVER_SUFFIX "-max-nt"
#else
#define MYSQL_SERVER_SUFFIX "-nt"
#endif /* ...DB */
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#elif defined(HAVE_BERKELEY_DB)
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#define MYSQL_SERVER_SUFFIX "-max"
#else
#define MYSQL_SERVER_SUFFIX ""
#endif /* __NT__ */
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#endif /* __WIN__ */
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/* Constants */
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const char *show_comp_option_name[]= {"YES", "NO", "DISABLED"};
const char *sql_mode_names[] =
{
  "REAL_AS_FLOAT", "PIPES_AS_CONCAT", "ANSI_QUOTES", "IGNORE_SPACE",
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  "?", "ONLY_FULL_GROUP_BY", "NO_UNSIGNED_SUBTRACTION",
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  "NO_DIR_IN_CREATE",
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  "POSTGRESQL", "ORACLE", "MSSQL", "DB2", "MAXDB", "NO_KEY_OPTIONS",
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  "NO_TABLE_OPTIONS", "NO_FIELD_OPTIONS", "MYSQL323", "MYSQL40", "ANSI",
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  "NO_AUTO_VALUE_ON_ZERO", NullS
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};
TYPELIB sql_mode_typelib= { array_elements(sql_mode_names)-1,"",
			    sql_mode_names };
const char *first_keyword= "first", *binary_keyword= "BINARY";
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const char *my_localhost= "localhost", *delayed_user= "DELAYED";
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#if SIZEOF_OFF_T > 4 && defined(BIG_TABLES)
#define GET_HA_ROWS GET_ULL
#else
#define GET_HA_ROWS GET_ULONG
#endif

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bool opt_large_files= sizeof(my_off_t) > 4;
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/*
  Used with --help for detailed option
*/
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bool opt_help= 0;
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bool opt_verbose= 0;

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arg_cmp_func Arg_comparator::comparator_matrix[4][2] =
{{&Arg_comparator::compare_string, &Arg_comparator::compare_e_string},
 {&Arg_comparator::compare_real, &Arg_comparator::compare_e_real},
 {&Arg_comparator::compare_int, &Arg_comparator::compare_e_int},
 {&Arg_comparator::compare_row, &Arg_comparator::compare_e_row}};
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/* Global variables */
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bool opt_log, opt_update_log, opt_bin_log, opt_slow_log;
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bool opt_error_log= IF_WIN(1,0);
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bool opt_disable_networking=0, opt_skip_show_db=0;
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bool server_id_supplied = 0;
bool opt_endinfo,using_udf_functions, locked_in_memory;
bool opt_using_transactions, using_update_log;
bool volatile abort_loop, select_thread_in_use, signal_thread_in_use;
bool volatile ready_to_exit, shutdown_in_progress, grant_option;

my_bool opt_skip_slave_start = 0; // If set, slave is not autostarted
my_bool opt_reckless_slave = 0;
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my_bool opt_enable_named_pipe= 0, opt_debugging= 0;
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my_bool opt_local_infile, opt_external_locking, opt_slave_compressed_protocol;
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my_bool opt_safe_user_create = 0, opt_no_mix_types = 0;
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my_bool lower_case_table_names, opt_old_rpl_compat;
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my_bool opt_show_slave_auth_info, opt_sql_bin_update = 0;
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my_bool opt_log_slave_updates= 0;
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my_bool	opt_console= 0, opt_bdb, opt_innodb, opt_isam;
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my_bool opt_readonly, use_temp_pool, relay_log_purge;
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my_bool opt_secure_auth= 0;
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my_bool opt_short_log_format= 0;
my_bool opt_log_queries_not_using_indexes= 0;
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volatile bool mqh_used = 0;
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uint mysqld_port, test_flags, select_errors, dropping_tables, ha_open_options;
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uint delay_key_write_options, protocol_version;
uint volatile thread_count, thread_running, kill_cached_threads, wake_thread;
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ulong back_log, connect_timeout, concurrency;
ulong server_id, thd_startup_options;
ulong table_cache_size, thread_stack, thread_stack_min, what_to_log;
ulong query_buff_size, slow_launch_time, slave_open_temp_tables;
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ulong open_files_limit, max_binlog_size, max_relay_log_size;
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ulong slave_net_timeout;
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ulong thread_cache_size=0, binlog_cache_size=0, max_binlog_cache_size=0;
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ulong query_cache_size=0;
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ulong com_stat[(uint) SQLCOM_END], com_other;
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ulong bytes_sent, bytes_received, net_big_packet_count;
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ulong refresh_version, flush_version;	/* Increments on each reload */
ulong query_id, long_query_count;
ulong aborted_threads, killed_threads, aborted_connects;
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ulong delayed_insert_timeout, delayed_insert_limit, delayed_queue_size;
ulong delayed_insert_threads, delayed_insert_writes, delayed_rows_in_use;
ulong delayed_insert_errors,flush_time, thread_created;
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ulong filesort_rows, filesort_range_count, filesort_scan_count;
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ulong filesort_merge_passes;
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ulong select_range_check_count, select_range_count, select_scan_count;
ulong select_full_range_join_count,select_full_join_count;
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ulong specialflag=0,opened_tables=0,created_tmp_tables=0,
      created_tmp_disk_tables=0;
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ulong max_connections,max_insert_delayed_threads,max_used_connections,
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      max_connect_errors, max_user_connections = 0;
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ulong thread_id=1L,current_pid;
ulong slow_launch_threads = 0;
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ulong expire_logs_days = 0;
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ulong rpl_recovery_rank=0;
ulong my_bind_addr;			/* the address we bind to */
volatile ulong cached_thread_count= 0;

double log_10[32];			/* 10 potences */
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time_t start_time;
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char mysql_home[FN_REFLEN], pidfile_name[FN_REFLEN], time_zone[30];
char log_error_file[FN_REFLEN], glob_hostname[FN_REFLEN];
char* log_error_file_ptr= log_error_file;
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char mysql_real_data_home[FN_REFLEN],
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     language[LIBLEN],reg_ext[FN_EXTLEN], mysql_charsets_dir[FN_REFLEN],
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     max_sort_char,*mysqld_user,*mysqld_chroot, *opt_init_file;
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const char *opt_date_time_formats[3];
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char *language_ptr, *default_collation_name, *default_character_set_name;
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char mysql_data_home_buff[2], *mysql_data_home=mysql_real_data_home;
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char server_version[SERVER_VERSION_LENGTH]=MYSQL_SERVER_VERSION;
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char *mysqld_unix_port, *opt_mysql_tmpdir;
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char *my_bind_addr_str;
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const char **errmesg;			/* Error messages */
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const char *myisam_recover_options_str="OFF";
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const char *sql_mode_str="OFF";
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/* name of reference on left espression in rewritten IN subquery */
const char *in_left_expr_name= "<left expr>";
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/* name of additional condition */
const char *in_additional_cond= "<IN COND>";
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/* classes for comparation parsing/processing */
Eq_creator eq_creator;
Ne_creator ne_creator;
Gt_creator gt_creator;
Lt_creator lt_creator;
Ge_creator ge_creator;
Le_creator le_creator;

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FILE *bootstrap_file;

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I_List<i_string_pair> replicate_rewrite_db;
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I_List<i_string> replicate_do_db, replicate_ignore_db;
// allow the user to tell us which db to replicate and which to ignore
I_List<i_string> binlog_do_db, binlog_ignore_db;
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I_List<THD> threads,thread_cache;
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I_List<NAMED_LIST> key_caches;
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struct system_variables global_system_variables;
struct system_variables max_system_variables;
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MY_TMPDIR mysql_tmpdir_list;
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MY_BITMAP temp_pool;
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CHARSET_INFO *system_charset_info, *files_charset_info ;
CHARSET_INFO *national_charset_info, *table_alias_charset;

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SHOW_COMP_OPTION have_berkeley_db, have_innodb, have_isam;
SHOW_COMP_OPTION have_raid, have_openssl, have_symlink, have_query_cache;
SHOW_COMP_OPTION have_crypt, have_compress;

/* Thread specific variables */
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pthread_key(MEM_ROOT*,THR_MALLOC);
pthread_key(THD*, THR_THD);
pthread_mutex_t LOCK_mysql_create_db, LOCK_Acl, LOCK_open, LOCK_thread_count,
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		LOCK_mapped_file, LOCK_status,
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		LOCK_error_log,
		LOCK_delayed_insert, LOCK_delayed_status, LOCK_delayed_create,
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		LOCK_crypt, LOCK_bytes_sent, LOCK_bytes_received,
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	        LOCK_global_system_variables,
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                LOCK_assign,
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		LOCK_user_conn, LOCK_slave_list, LOCK_active_mi;
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rw_lock_t	LOCK_grant;
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pthread_cond_t COND_refresh,COND_thread_count, COND_slave_stopped,
	       COND_slave_start;
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pthread_cond_t COND_thread_cache,COND_flush_thread_cache;
pthread_t signal_thread;
pthread_attr_t connection_attrib;

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/* replication parameters, if master_host is not NULL, we are a slave */
uint master_port= MYSQL_PORT, master_connect_retry = 60;
uint report_port= MYSQL_PORT;
ulong master_retry_count=0;
char *master_user, *master_password, *master_host, *master_info_file;
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char *relay_log_info_file, *report_user, *report_password, *report_host;
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char *opt_relay_logname = 0, *opt_relaylog_index_name=0;
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my_bool master_ssl;
char *master_ssl_key, *master_ssl_cert;
char *master_ssl_ca, *master_ssl_capath, *master_ssl_cipher;
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/* Static variables */

static bool kill_in_progress, segfaulted;
static my_bool opt_do_pstack, opt_noacl, opt_bootstrap, opt_myisam_log;
static int cleanup_done;
static ulong opt_specialflag, opt_myisam_block_size;
static char *opt_logname, *opt_update_logname, *opt_binlog_index_name;
static char *opt_slow_logname;
static char *mysql_home_ptr, *pidfile_name_ptr;
static char **defaults_argv;
static char *opt_bin_logname;

static my_socket unix_sock,ip_sock;
static pthread_t select_thread;
struct rand_struct sql_rand; // used by sql_class.cc:THD::THD()

/* OS specific variables */

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#ifdef __WIN__
#undef	 getpid
#include <process.h>
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static pthread_cond_t COND_handler_count;
static uint handler_count;
static bool start_mode=0, use_opt_args;
static int opt_argc;
static char **opt_argv;

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#if !defined(EMBEDDED_LIBRARY)
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static HANDLE hEventShutdown;
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static char shutdown_event_name[40];
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#include "nt_servc.h"
static	 NTService  Service;	      // Service object for WinNT
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#endif /* EMBEDDED_LIBRARY */
#endif /* __WIN__ */

#ifdef __NT__
static char szPipeName [ 257 ];
static SECURITY_ATTRIBUTES saPipeSecurity;
static SECURITY_DESCRIPTOR sdPipeDescriptor;
static HANDLE hPipe = INVALID_HANDLE_VALUE;
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#endif
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#ifdef OS2
pthread_cond_t eventShutdown;
#endif

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#ifndef EMBEDDED_LIBRARY
bool mysql_embedded=0;
#else
bool mysql_embedded=1;
#endif

#ifndef DBUG_OFF
static const char* default_dbug_option;
#endif
#ifdef HAVE_LIBWRAP
char *libwrapName= NULL;
#endif
#ifdef HAVE_QUERY_CACHE
ulong query_cache_limit= 0;
ulong query_cache_min_res_unit= QUERY_CACHE_MIN_RESULT_DATA_SIZE;
Query_cache query_cache;
#endif
#ifdef HAVE_SMEM
char *shared_memory_base_name= default_shared_memory_base_name;
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bool opt_enable_shared_memory;
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#endif

#include "sslopt-vars.h"
#ifdef HAVE_OPENSSL
char *des_key_file;
struct st_VioSSLAcceptorFd *ssl_acceptor_fd;
#endif /* HAVE_OPENSSL */


/* Function declarations */

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static void start_signal_handler(void);
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extern "C" pthread_handler_decl(signal_hand, arg);
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static void mysql_init_variables(void);
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static void get_options(int argc,char **argv);
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static int init_thread_environment();
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static char *get_relative_path(const char *path);
static void fix_paths(void);
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extern "C" pthread_handler_decl(handle_connections_sockets,arg);
extern "C" pthread_handler_decl(kill_server_thread,arg);
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static int bootstrap(FILE *file);
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static void close_server_sock();
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static bool read_init_file(char *file_name);
#ifdef __NT__
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extern "C" pthread_handler_decl(handle_connections_namedpipes,arg);
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#endif
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#ifdef HAVE_SMEM
static pthread_handler_decl(handle_connections_shared_memory,arg);
#endif
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extern "C" pthread_handler_decl(handle_slave,arg);
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#ifdef SET_RLIMIT_NOFILE
static uint set_maximum_open_files(uint max_file_limit);
#endif
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static ulong find_bit_type(const char *x, TYPELIB *bit_lib);
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static void clean_up(bool print_message);
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static void clean_up_mutexes(void);
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#ifndef EMBEDDED_LIBRARY
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/****************************************************************************
** Code to end mysqld
****************************************************************************/

static void close_connections(void)
{
#ifdef EXTRA_DEBUG
  int count=0;
#endif
  DBUG_ENTER("close_connections");

  /* Clear thread cache */
  kill_cached_threads++;
  flush_thread_cache();

  /* kill flush thread */
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  (void) pthread_mutex_lock(&LOCK_manager);
  if (manager_thread_in_use)
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  {
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    DBUG_PRINT("quit",("killing manager thread: %lx",manager_thread));
   (void) pthread_cond_signal(&COND_manager);
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  }
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  (void) pthread_mutex_unlock(&LOCK_manager);
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  /* kill connection thread */
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#if !defined(__WIN__) && !defined(__EMX__) && !defined(OS2) && !defined(__NETWARE__)
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  DBUG_PRINT("quit",("waiting for select thread: %lx",select_thread));
  (void) pthread_mutex_lock(&LOCK_thread_count);

  while (select_thread_in_use)
  {
    struct timespec abstime;
    int error;
    LINT_INIT(error);
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    DBUG_PRINT("info",("Waiting for select_thread"));

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#ifndef DONT_USE_THR_ALARM
    if (pthread_kill(select_thread,THR_CLIENT_ALARM))
      break;					// allready dead
#endif
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    set_timespec(abstime, 2);
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    for (uint tmp=0 ; tmp < 10 && select_thread_in_use; tmp++)
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    {
      error=pthread_cond_timedwait(&COND_thread_count,&LOCK_thread_count,
				   &abstime);
      if (error != EINTR)
	break;
    }
#ifdef EXTRA_DEBUG
    if (error != 0 && !count++)
      sql_print_error("Got error %d from pthread_cond_timedwait",error);
#endif
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    close_server_sock();
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  }
  (void) pthread_mutex_unlock(&LOCK_thread_count);
#endif /* __WIN__ */


  /* Abort listening to new connections */
  DBUG_PRINT("quit",("Closing sockets"));
  if ( !opt_disable_networking )
  {
    if (ip_sock != INVALID_SOCKET)
    {
      (void) shutdown(ip_sock,2);
      (void) closesocket(ip_sock);
      ip_sock= INVALID_SOCKET;
    }
  }
#ifdef __NT__
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  if (hPipe != INVALID_HANDLE_VALUE && opt_enable_named_pipe)
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  {
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    HANDLE temp;
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    DBUG_PRINT( "quit", ("Closing named pipes") );
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    /* Create connection to the handle named pipe handler to break the loop */
    if ((temp = CreateFile(szPipeName,
			   GENERIC_READ | GENERIC_WRITE,
			   0,
			   NULL,
			   OPEN_EXISTING,
			   0,
			   NULL )) != INVALID_HANDLE_VALUE)
    {
      WaitNamedPipe(szPipeName, 1000);
      DWORD dwMode = PIPE_READMODE_BYTE | PIPE_WAIT;
      SetNamedPipeHandleState(temp, &dwMode, NULL, NULL);
      CancelIo(temp);
      DisconnectNamedPipe(temp);
      CloseHandle(temp);
    }
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  }
#endif
#ifdef HAVE_SYS_UN_H
  if (unix_sock != INVALID_SOCKET)
  {
    (void) shutdown(unix_sock,2);
    (void) closesocket(unix_sock);
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    (void) unlink(mysqld_unix_port);
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    unix_sock= INVALID_SOCKET;
  }
#endif
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  end_thr_alarm(0);			 // Abort old alarms.
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  end_slave();
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  /* First signal all threads that it's time to die */

  THD *tmp;
  (void) pthread_mutex_lock(&LOCK_thread_count); // For unlink from list

  I_List_iterator<THD> it(threads);
  while ((tmp=it++))
  {
    DBUG_PRINT("quit",("Informing thread %ld that it's time to die",
		       tmp->thread_id));
    tmp->killed=1;
    if (tmp->mysys_var)
    {
      tmp->mysys_var->abort=1;
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      pthread_mutex_lock(&tmp->mysys_var->mutex);
      if (tmp->mysys_var->current_cond)
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      {
	pthread_mutex_lock(tmp->mysys_var->current_mutex);
	pthread_cond_broadcast(tmp->mysys_var->current_cond);
	pthread_mutex_unlock(tmp->mysys_var->current_mutex);
      }
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      pthread_mutex_unlock(&tmp->mysys_var->mutex);
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    }
  }
  (void) pthread_mutex_unlock(&LOCK_thread_count); // For unlink from list

  if (thread_count)
    sleep(1);					// Give threads time to die

  /* Force remaining threads to die by closing the connection to the client */

  for (;;)
  {
    DBUG_PRINT("quit",("Locking LOCK_thread_count"));
    (void) pthread_mutex_lock(&LOCK_thread_count); // For unlink from list
    if (!(tmp=threads.get()))
    {
      DBUG_PRINT("quit",("Unlocking LOCK_thread_count"));
      (void) pthread_mutex_unlock(&LOCK_thread_count);
      break;
    }
#ifndef __bsdi__				// Bug in BSDI kernel
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    if (tmp->net.vio)
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    {
      sql_print_error(ER(ER_FORCING_CLOSE),my_progname,
		      tmp->thread_id,tmp->user ? tmp->user : "");
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      close_connection(tmp,0,0);
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    }
#endif
    DBUG_PRINT("quit",("Unlocking LOCK_thread_count"));
    (void) pthread_mutex_unlock(&LOCK_thread_count);
  }
  /* All threads has now been aborted */
  DBUG_PRINT("quit",("Waiting for threads to die (count=%u)",thread_count));
  (void) pthread_mutex_lock(&LOCK_thread_count);
  while (thread_count)
  {
    (void) pthread_cond_wait(&COND_thread_count,&LOCK_thread_count);
    DBUG_PRINT("quit",("One thread died (count=%u)",thread_count));
  }
  (void) pthread_mutex_unlock(&LOCK_thread_count);

  DBUG_PRINT("quit",("close_connections thread"));
  DBUG_VOID_RETURN;
}
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#endif /*EMBEDDED_LIBRARY*/
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static void close_server_sock()
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{
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#ifdef HAVE_CLOSE_SERVER_SOCK
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  DBUG_ENTER("close_server_sock");
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  my_socket tmp_sock;
  tmp_sock=ip_sock;
  if (tmp_sock != INVALID_SOCKET)
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  {
    ip_sock=INVALID_SOCKET;
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    DBUG_PRINT("info",("calling shutdown on TCP/IP socket"));
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    VOID(shutdown(tmp_sock,2));
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#if defined(__NETWARE__)
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    /*
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      The following code is disabled for normal systems as it causes MySQL
      to hang on AIX 4.3 during shutdown
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    */
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    DBUG_PRINT("info",("calling closesocket on TCP/IP socket"));
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    VOID(closesocket(tmp_sock));
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#endif
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  }
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  tmp_sock=unix_sock;
  if (tmp_sock != INVALID_SOCKET)
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  {
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    unix_sock=INVALID_SOCKET;
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    DBUG_PRINT("info",("calling shutdown on unix socket"));
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    VOID(shutdown(tmp_sock,2));
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#if defined(__NETWARE__)
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    /*
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      The following code is disabled for normal systems as it may cause MySQL
      to hang on AIX 4.3 during shutdown
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    */
    DBUG_PRINT("info",("calling closesocket on unix/IP socket"));
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    VOID(closesocket(tmp_sock));
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#endif
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    VOID(unlink(mysqld_unix_port));
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  }
  DBUG_VOID_RETURN;
#endif
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}
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void kill_mysql(void)
{
  DBUG_ENTER("kill_mysql");

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#ifdef SIGNALS_DONT_BREAK_READ
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  abort_loop=1;					// Break connection loops
  close_server_sock();				// Force accept to wake up
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#endif
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#if defined(__WIN__)
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#if !defined(EMBEDDED_LIBRARY)
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  {
    if (!SetEvent(hEventShutdown))
    {
      DBUG_PRINT("error",("Got error: %ld from SetEvent",GetLastError()));
    }
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    /*
      or:
      HANDLE hEvent=OpenEvent(0, FALSE, "MySqlShutdown");
      SetEvent(hEventShutdown);
      CloseHandle(hEvent);
    */
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  }
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#endif
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#elif defined(OS2)
  pthread_cond_signal( &eventShutdown);		// post semaphore
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#elif defined(HAVE_PTHREAD_KILL)
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  if (pthread_kill(signal_thread, MYSQL_KILL_SIGNAL))
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  {
    DBUG_PRINT("error",("Got error %d from pthread_kill",errno)); /* purecov: inspected */
  }
#elif !defined(SIGNALS_DONT_BREAK_READ)
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  kill(current_pid, MYSQL_KILL_SIGNAL);
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#endif
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  DBUG_PRINT("quit",("After pthread_kill"));
  shutdown_in_progress=1;			// Safety if kill didn't work
#ifdef SIGNALS_DONT_BREAK_READ
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  if (!kill_in_progress)
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  {
    pthread_t tmp;
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    abort_loop=1;
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    if (pthread_create(&tmp,&connection_attrib, kill_server_thread,
			   (void*) 0))
      sql_print_error("Error: Can't create thread to kill server");
  }
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#endif
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  DBUG_VOID_RETURN;
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}

	/* Force server down. kill all connections and threads and exit */

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#if defined(OS2) || defined(__NETWARE__)
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extern "C" void kill_server(int sig_ptr)
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#define RETURN_FROM_KILL_SERVER DBUG_VOID_RETURN
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#elif !defined(__WIN__)
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static void *kill_server(void *sig_ptr)
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#define RETURN_FROM_KILL_SERVER DBUG_RETURN(0)
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#else
static void __cdecl kill_server(int sig_ptr)
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#define RETURN_FROM_KILL_SERVER DBUG_VOID_RETURN
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#endif
{
  int sig=(int) (long) sig_ptr;			// This is passed a int
  DBUG_ENTER("kill_server");
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#ifndef EMBEDDED_LIBRARY
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  // if there is a signal during the kill in progress, ignore the other
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  if (kill_in_progress)				// Safety
    RETURN_FROM_KILL_SERVER;
  kill_in_progress=TRUE;
  abort_loop=1;					// This should be set
  signal(sig,SIG_IGN);
  if (sig == MYSQL_KILL_SIGNAL || sig == 0)
    sql_print_error(ER(ER_NORMAL_SHUTDOWN),my_progname);
  else
    sql_print_error(ER(ER_GOT_SIGNAL),my_progname,sig); /* purecov: inspected */

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#if defined(__NETWARE__) || (defined(USE_ONE_SIGNAL_HAND) && !defined(__WIN__) && !defined(OS2))
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  my_thread_init();				// If this is a new thread
#endif
  close_connections();
  if (sig != MYSQL_KILL_SIGNAL && sig != 0)
    unireg_abort(1);				/* purecov: inspected */
  else
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    unireg_end();
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#ifdef __NETWARE__
  pthread_join(select_thread, NULL);		// wait for main thread
#endif /* __NETWARE__ */
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  pthread_exit(0);				/* purecov: deadcode */
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#endif /* EMBEDDED_LIBRARY */
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  RETURN_FROM_KILL_SERVER;
}


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#if defined(USE_ONE_SIGNAL_HAND) || (defined(__NETWARE__) && defined(SIGNALS_DONT_BREAK_READ))
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extern "C" pthread_handler_decl(kill_server_thread,arg __attribute__((unused)))
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{
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  SHUTDOWN_THD;
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  my_thread_init();				// Initialize new thread
  kill_server(0);
  my_thread_end();				// Normally never reached
  return 0;
}
#endif

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#if defined(__amiga__)
#undef sigset
#define sigset signal
#endif

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extern "C" sig_handler print_signal_warning(int sig)
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{
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  if (!DBUG_IN_USE)
  {
    if (global_system_variables.log_warnings)
      sql_print_error("Warning: Got signal %d from thread %d",
		      sig,my_thread_id());
  }
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#ifdef DONT_REMEMBER_SIGNAL
  sigset(sig,print_signal_warning);		/* int. thread system calls */
#endif
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#if !defined(__WIN__) && !defined(OS2) && !defined(__NETWARE__)
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  if (sig == SIGALRM)
    alarm(2);					/* reschedule alarm */
#endif
}

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/*
  cleanup all memory and end program nicely
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  SYNOPSIS
    unireg_end()

  NOTES
    This function never returns.
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    If SIGNALS_DONT_BREAK_READ is defined, this function is called
    by the main thread. To get MySQL to shut down nicely in this case
    (Mac OS X) we have to call exit() instead if pthread_exit().
*/
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#ifndef EMBEDDED_LIBRARY
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void unireg_end(void)
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{
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  clean_up(1);
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  my_thread_end();
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#if defined(SIGNALS_DONT_BREAK_READ) && !defined(__NETWARE__)
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  exit(0);
#else
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  pthread_exit(0);				// Exit is in main thread
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#endif
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}

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extern "C" void unireg_abort(int exit_code)
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{
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  DBUG_ENTER("unireg_abort");
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  if (exit_code)
    sql_print_error("Aborting\n");
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  clean_up(exit_code || !opt_bootstrap); /* purecov: inspected */
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  DBUG_PRINT("quit",("done with cleanup in unireg_abort"));
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  clean_up_mutexes();
  my_end(opt_endinfo ? MY_CHECK_ERROR | MY_GIVE_INFO : 0);
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  exit(exit_code); /* purecov: inspected */
}
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#endif
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void clean_up(bool print_message)
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{
  DBUG_PRINT("exit",("clean_up"));
  if (cleanup_done++)
    return; /* purecov: inspected */
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  mysql_log.cleanup();
  mysql_slow_log.cleanup();
  mysql_update_log.cleanup();
  mysql_bin_log.cleanup();

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#ifdef HAVE_REPLICATION
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  if (use_slave_mask)
    bitmap_free(&slave_error_mask);
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#endif
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#ifndef NO_EMBEDDED_ACCESS_CHECKS
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  acl_free(1);
  grant_free();
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#endif
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  query_cache_destroy();
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  table_cache_free();
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  assign_cache_free();
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  hostname_cache_free();
  item_user_lock_free();
  lex_free();				/* Free some memory */
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  set_var_free();
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#ifdef HAVE_DLOPEN
  if (!opt_noacl)
    udf_free();
#endif
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  (void) ha_panic(HA_PANIC_CLOSE);	/* close all tables and logs */
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  process_key_caches(&ha_end_key_cache);
  ha_end_key_cache(&dflt_key_cache_var);
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  delete_elements(&key_caches, free_key_cache);
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  end_thr_alarm(1);			/* Free allocated memory */
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#ifdef USE_RAID
  end_raid();
#endif
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  my_free((char*) global_system_variables.date_format,
	  MYF(MY_ALLOW_ZERO_PTR));
  my_free((char*) global_system_variables.time_format,
	  MYF(MY_ALLOW_ZERO_PTR));
  my_free((char*) global_system_variables.datetime_format,
	  MYF(MY_ALLOW_ZERO_PTR));
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  if (defaults_argv)
    free_defaults(defaults_argv);
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  free_tmpdir(&mysql_tmpdir_list);
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#ifdef HAVE_REPLICATION
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  my_free(slave_load_tmpdir,MYF(MY_ALLOW_ZERO_PTR));
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#endif
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  x_free(opt_bin_logname);
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  x_free(opt_relay_logname);
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  bitmap_free(&temp_pool);
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  free_max_user_conn();
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#ifdef HAVE_REPLICATION
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  end_slave_list();
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  free_list(&replicate_do_db);
  free_list(&replicate_ignore_db);
  free_list(&binlog_do_db);
  free_list(&binlog_ignore_db);
  free_list(&replicate_rewrite_db);
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#endif
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#ifdef HAVE_OPENSSL
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  if (ssl_acceptor_fd)
    my_free((gptr) ssl_acceptor_fd, MYF(MY_ALLOW_ZERO_PTR));
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  free_des_key_file();
#endif /* HAVE_OPENSSL */
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#ifdef USE_REGEX
  regex_end();
#endif
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  if (print_message && errmesg)
    sql_print_error(ER(ER_SHUTDOWN_COMPLETE),my_progname);
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#if !defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
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  if (!opt_bootstrap)
    (void) my_delete(pidfile_name,MYF(0));	// This may not always exist
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#endif
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  x_free((gptr) my_errmsg[ERRMAPP]);	/* Free messages */
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  DBUG_PRINT("quit", ("Error messages freed"));
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  /* Tell main we are ready */
  (void) pthread_mutex_lock(&LOCK_thread_count);
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  DBUG_PRINT("quit", ("got thread count lock"));
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  ready_to_exit=1;
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  /* do the broadcast inside the lock to ensure that my_end() is not called */
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  (void) pthread_cond_broadcast(&COND_thread_count);
  (void) pthread_mutex_unlock(&LOCK_thread_count);
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  /*
    The following lines may never be executed as the main thread may have
    killed us
  */
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  DBUG_PRINT("quit", ("done with cleanup"));
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} /* clean_up */


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static void clean_up_mutexes()
{
  (void) pthread_mutex_destroy(&LOCK_mysql_create_db);
  (void) pthread_mutex_destroy(&LOCK_Acl);
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  (void) rwlock_destroy(&LOCK_grant);
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  (void) pthread_mutex_destroy(&LOCK_open);
  (void) pthread_mutex_destroy(&LOCK_thread_count);
  (void) pthread_mutex_destroy(&LOCK_mapped_file);
  (void) pthread_mutex_destroy(&LOCK_status);
  (void) pthread_mutex_destroy(&LOCK_error_log);
  (void) pthread_mutex_destroy(&LOCK_delayed_insert);
  (void) pthread_mutex_destroy(&LOCK_delayed_status);
  (void) pthread_mutex_destroy(&LOCK_delayed_create);
  (void) pthread_mutex_destroy(&LOCK_manager);
  (void) pthread_mutex_destroy(&LOCK_crypt);
  (void) pthread_mutex_destroy(&LOCK_bytes_sent);
  (void) pthread_mutex_destroy(&LOCK_bytes_received);
  (void) pthread_mutex_destroy(&LOCK_user_conn);
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#ifdef HAVE_REPLICATION
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  (void) pthread_mutex_destroy(&LOCK_rpl_status);
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  (void) pthread_cond_destroy(&COND_rpl_status);
#endif
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  (void) pthread_mutex_destroy(&LOCK_active_mi);
  (void) pthread_mutex_destroy(&LOCK_global_system_variables);
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  (void) pthread_mutex_destroy(&LOCK_assign);
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  (void) pthread_cond_destroy(&COND_thread_count);
  (void) pthread_cond_destroy(&COND_refresh);
  (void) pthread_cond_destroy(&COND_thread_cache);
  (void) pthread_cond_destroy(&COND_flush_thread_cache);
  (void) pthread_cond_destroy(&COND_manager);
}
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/****************************************************************************
** Init IP and UNIX socket
****************************************************************************/

static void set_ports()
{
  char	*env;
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  if (!mysqld_port && !opt_disable_networking)
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  {					// Get port if not from commandline
    struct  servent *serv_ptr;
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    mysqld_port= MYSQL_PORT;
    if ((serv_ptr= getservbyname("mysql", "tcp")))
      mysqld_port= ntohs((u_short) serv_ptr->s_port); /* purecov: inspected */
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    if ((env = getenv("MYSQL_TCP_PORT")))
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      mysqld_port= (uint) atoi(env);		/* purecov: inspected */
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  }
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  if (!mysqld_unix_port)
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  {
#ifdef __WIN__
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    mysqld_unix_port= (char*) MYSQL_NAMEDPIPE;
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#else
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    mysqld_unix_port= (char*) MYSQL_UNIX_ADDR;
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#endif
    if ((env = getenv("MYSQL_UNIX_PORT")))
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      mysqld_unix_port= env;			/* purecov: inspected */
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  }
}

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#ifndef EMBEDDED_LIBRARY
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/* Change to run as another user if started with --user */

static void set_user(const char *user)
{
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#if !defined(__WIN__) && !defined(OS2) && !defined(__NETWARE__)
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  struct passwd *ent;
  uid_t user_id= geteuid();
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  // don't bother if we aren't superuser
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  if (user_id)
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  {
    if (user)
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    {
      /* Don't give a warning, if real user is same as given with --user */
      struct passwd *user_info= getpwnam(user);

      if (!user_info || user_id != user_info->pw_uid)
	fprintf(stderr,
		"Warning: One can only use the --user switch if running as root\n");
    }
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    return;
  }
  else if (!user)
  {
    if (!opt_bootstrap)
    {
      fprintf(stderr,"Fatal error: Please read \"Security\" section of the manual to find out how to run mysqld as root!\n");
      unireg_abort(1);
    }
    return;
  }
  if (!strcmp(user,"root"))
    return;				// Avoid problem with dynamic libraries

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  uid_t uid;
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  if (!(ent = getpwnam(user)))
  {
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    // allow a numeric uid to be used
    const char *pos;
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    for (pos=user; my_isdigit(mysqld_charset,*pos); pos++) ;
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    if (*pos)					// Not numeric id
    {
      fprintf(stderr,"Fatal error: Can't change to run as user '%s' ;  Please check that the user exists!\n",user);
      unireg_abort(1);
    }
    uid=atoi(user);				// Use numberic uid
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  }
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  else
  {
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#ifdef HAVE_INITGROUPS
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    initgroups((char*) user,ent->pw_gid);
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#endif
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    if (setgid(ent->pw_gid) == -1)
    {
      sql_perror("setgid");
      unireg_abort(1);
    }
    uid=ent->pw_uid;
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  }
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  if (setuid(uid) == -1)
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  {
    sql_perror("setuid");
    unireg_abort(1);
  }
#endif
}

/* Change root user if started with  --chroot */

static void set_root(const char *path)
{
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#if !defined(__WIN__) && !defined(__EMX__) && !defined(OS2) && !defined(__NETWARE__)
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  if (chroot(path) == -1)
  {
    sql_perror("chroot");
    unireg_abort(1);
  }
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  my_setwd("/", MYF(0));
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#endif
}

static void server_init(void)
{
  struct sockaddr_in	IPaddr;
#ifdef HAVE_SYS_UN_H
  struct sockaddr_un	UNIXaddr;
#endif
  int	arg=1;
  DBUG_ENTER("server_init");

#ifdef	__WIN__
  if ( !opt_disable_networking )
  {
    WSADATA WsaData;
    if (SOCKET_ERROR == WSAStartup (0x0101, &WsaData))
    {
      my_message(0,"WSAStartup Failed\n",MYF(0));
      unireg_abort(1);
    }
  }
#endif /* __WIN__ */

  set_ports();

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  if (mysqld_port != 0 && !opt_disable_networking && !opt_bootstrap)
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  {
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    DBUG_PRINT("general",("IP Socket is %d",mysqld_port));
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    ip_sock = socket(AF_INET, SOCK_STREAM, 0);
    if (ip_sock == INVALID_SOCKET)
    {
      DBUG_PRINT("error",("Got error: %d from socket()",socket_errno));
      sql_perror(ER(ER_IPSOCK_ERROR));		/* purecov: tested */
      unireg_abort(1);				/* purecov: tested */
    }
    bzero((char*) &IPaddr, sizeof(IPaddr));
    IPaddr.sin_family = AF_INET;
    IPaddr.sin_addr.s_addr = my_bind_addr;
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    IPaddr.sin_port = (unsigned short) htons((unsigned short) mysqld_port);
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#ifndef __WIN__
    /*
      We should not use SO_REUSEADDR on windows as this would enable a
      user to open two mysqld servers with the same TCP/IP port.
    */
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    (void) setsockopt(ip_sock,SOL_SOCKET,SO_REUSEADDR,(char*)&arg,sizeof(arg));
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#endif /* __WIN__ */
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    if (bind(ip_sock, my_reinterpret_cast(struct sockaddr *) (&IPaddr),
	     sizeof(IPaddr)) < 0)
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    {
      DBUG_PRINT("error",("Got error: %d from bind",socket_errno));
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      sql_perror("Can't start server: Bind on TCP/IP port");
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      sql_print_error("Do you already have another mysqld server running on port: %d ?",mysqld_port);
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      unireg_abort(1);
    }
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    if (listen(ip_sock,(int) back_log) < 0)
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    {
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      sql_perror("Can't start server: listen() on TCP/IP port");
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      sql_print_error("Error:  listen() on TCP/IP failed with error %d",
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		      socket_errno);
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      unireg_abort(1);
    }
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  }
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  set_user(mysqld_user);		// Works also with mysqld_user==NULL
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#ifdef __NT__
  /* create named pipe */
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  if (Service.IsNT() && mysqld_unix_port[0] && !opt_bootstrap &&
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      opt_enable_named_pipe)
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  {
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    sprintf(szPipeName, "\\\\.\\pipe\\%s", mysqld_unix_port );
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    ZeroMemory( &saPipeSecurity, sizeof(saPipeSecurity) );
    ZeroMemory( &sdPipeDescriptor, sizeof(sdPipeDescriptor) );
    if ( !InitializeSecurityDescriptor(&sdPipeDescriptor,
				       SECURITY_DESCRIPTOR_REVISION) )
    {
      sql_perror("Can't start server : Initialize security descriptor");
      unireg_abort(1);
    }
    if (!SetSecurityDescriptorDacl(&sdPipeDescriptor, TRUE, NULL, FALSE))
    {
      sql_perror("Can't start server : Set security descriptor");
      unireg_abort(1);
    }
    saPipeSecurity.nLength = sizeof( SECURITY_ATTRIBUTES );
    saPipeSecurity.lpSecurityDescriptor = &sdPipeDescriptor;
    saPipeSecurity.bInheritHandle = FALSE;
    if ((hPipe = CreateNamedPipe(szPipeName,
				 PIPE_ACCESS_DUPLEX,
				 PIPE_TYPE_BYTE |
				 PIPE_READMODE_BYTE |
				 PIPE_WAIT,
				 PIPE_UNLIMITED_INSTANCES,
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				 (int) global_system_variables.net_buffer_length,
				 (int) global_system_variables.net_buffer_length,
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				 NMPWAIT_USE_DEFAULT_WAIT,
				 &saPipeSecurity )) == INVALID_HANDLE_VALUE)
      {
	LPVOID lpMsgBuf;
	int error=GetLastError();
	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
		      FORMAT_MESSAGE_FROM_SYSTEM,
		      NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
		      (LPTSTR) &lpMsgBuf, 0, NULL );
	MessageBox( NULL, (LPTSTR) lpMsgBuf, "Error from CreateNamedPipe",
		    MB_OK|MB_ICONINFORMATION );
	LocalFree( lpMsgBuf );
	unireg_abort(1);
      }
  }
#endif

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#if defined(HAVE_SYS_UN_H)
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  /*
  ** Create the UNIX socket
  */
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  if (mysqld_unix_port[0] && !opt_bootstrap)
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  {
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    DBUG_PRINT("general",("UNIX Socket is %s",mysqld_unix_port));
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    if ((unix_sock= socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
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    {
      sql_perror("Can't start server : UNIX Socket "); /* purecov: inspected */
      unireg_abort(1);				/* purecov: inspected */
    }
    bzero((char*) &UNIXaddr, sizeof(UNIXaddr));
    UNIXaddr.sun_family = AF_UNIX;
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    strmov(UNIXaddr.sun_path, mysqld_unix_port);
    (void) unlink(mysqld_unix_port);
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    (void) setsockopt(unix_sock,SOL_SOCKET,SO_REUSEADDR,(char*)&arg,
		      sizeof(arg));
    umask(0);
    if (bind(unix_sock, my_reinterpret_cast(struct sockaddr *) (&UNIXaddr),
	     sizeof(UNIXaddr)) < 0)
    {
      sql_perror("Can't start server : Bind on unix socket"); /* purecov: tested */
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      sql_print_error("Do you already have another mysqld server running on socket: %s ?",mysqld_unix_port);
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      unireg_abort(1);					/* purecov: tested */
    }
    umask(((~my_umask) & 0666));
#if defined(S_IFSOCK) && defined(SECURE_SOCKETS)
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    (void) chmod(mysqld_unix_port,S_IFSOCK);	/* Fix solaris 2.6 bug */
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#endif
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    if (listen(unix_sock,(int) back_log) < 0)
      sql_print_error("Warning:  listen() on Unix socket failed with error %d",
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		      socket_errno);
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  }
#endif
  DBUG_PRINT("info",("server started"));
  DBUG_VOID_RETURN;
}

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#endif /*!EMBEDDED_LIBRARY*/
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void yyerror(const char *s)
{
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  THD *thd=current_thd;
  char *yytext=(char*) thd->lex.tok_start;
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  /* "parse error" changed into "syntax error" between bison 1.75 and 1.875 */
  if (strcmp(s,"parse error") == 0 || strcmp(s,"syntax error") == 0)
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    s=ER(ER_SYNTAX_ERROR);
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  net_printf(thd,ER_PARSE_ERROR, s, yytext ? (char*) yytext : "",
	     thd->lex.yylineno);
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}

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#ifndef EMBEDDED_LIBRARY
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void close_connection(THD *thd, uint errcode, bool lock)
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{
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  st_vio *vio;
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  DBUG_ENTER("close_connection");
  DBUG_PRINT("enter",("fd: %s  error: '%s'",
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		      thd->net.vio ? vio_description(thd->net.vio) :
		      "(not connected)",
		      errcode ? ER(errcode) : ""));
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  if (lock)
    (void) pthread_mutex_lock(&LOCK_thread_count);
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  if ((vio=thd->net.vio) != 0)
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  {
    if (errcode)
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      send_error(thd, errcode, ER(errcode));	/* purecov: inspected */
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    vio_close(vio);			/* vio is freed in delete thd */
  }
  if (lock)
    (void) pthread_mutex_unlock(&LOCK_thread_count);
  DBUG_VOID_RETURN;
}
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#endif /* EMBEDDED_LIBRARY */

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	/* Called when a thread is aborted */
	/* ARGSUSED */

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extern "C" sig_handler end_thread_signal(int sig __attribute__((unused)))
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{
  THD *thd=current_thd;
  DBUG_ENTER("end_thread_signal");
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  if (thd && ! thd->bootstrap)
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  {
    statistic_increment(killed_threads, &LOCK_status);
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    end_thread(thd,0);
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  }
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  DBUG_VOID_RETURN;				/* purecov: deadcode */
}


void end_thread(THD *thd, bool put_in_cache)
{
  DBUG_ENTER("end_thread");
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  thd->cleanup();
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  (void) pthread_mutex_lock(&LOCK_thread_count);
  thread_count--;
  delete thd;
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  if (put_in_cache && cached_thread_count < thread_cache_size &&
      ! abort_loop && !kill_cached_threads)
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  {
    /* Don't kill the thread, just put it in cache for reuse */
    DBUG_PRINT("info", ("Adding thread to cache"))
    cached_thread_count++;
    while (!abort_loop && ! wake_thread && ! kill_cached_threads)
      (void) pthread_cond_wait(&COND_thread_cache, &LOCK_thread_count);
    cached_thread_count--;
    if (kill_cached_threads)
      pthread_cond_signal(&COND_flush_thread_cache);
    if (wake_thread)
    {
      wake_thread--;
      thd=thread_cache.get();
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      thd->real_id=pthread_self();
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      (void) thd->store_globals();
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      threads.append(thd);
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      pthread_mutex_unlock(&LOCK_thread_count);
      DBUG_VOID_RETURN;
    }
  }

  DBUG_PRINT("info", ("sending a broadcast"))

  /* Tell main we are ready */
  (void) pthread_mutex_unlock(&LOCK_thread_count);
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  /* It's safe to broadcast outside a lock (COND... is not deleted here) */
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  (void) pthread_cond_broadcast(&COND_thread_count);
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  DBUG_PRINT("info", ("unlocked thread_count mutex"))
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#ifdef ONE_THREAD
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  if (!(test_flags & TEST_NO_THREADS))	// For debugging under Linux
#endif
  {
    my_thread_end();
    pthread_exit(0);
  }
  DBUG_VOID_RETURN;
}


/* Start a cached thread. LOCK_thread_count is locked on entry */

static void start_cached_thread(THD *thd)
{
  thread_cache.append(thd);
  wake_thread++;
  thread_count++;
  pthread_cond_signal(&COND_thread_cache);
}


void flush_thread_cache()
{
  (void) pthread_mutex_lock(&LOCK_thread_count);
  kill_cached_threads++;
  while (cached_thread_count)
  {
    pthread_cond_broadcast(&COND_thread_cache);
    pthread_cond_wait(&COND_flush_thread_cache,&LOCK_thread_count);
  }
  kill_cached_threads--;
  (void) pthread_mutex_unlock(&LOCK_thread_count);
}


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/*
  Aborts a thread nicely. Commes here on SIGPIPE
  TODO: One should have to fix that thr_alarm know about this
  thread too.
*/
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#ifdef THREAD_SPECIFIC_SIGPIPE
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extern "C" sig_handler abort_thread(int sig __attribute__((unused)))
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{
  THD *thd=current_thd;
  DBUG_ENTER("abort_thread");
  if (thd)
    thd->killed=1;
  DBUG_VOID_RETURN;
}
#endif

/******************************************************************************
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  Setup a signal thread with handles all signals.
  Because Linux doesn't support schemas use a mutex to check that
  the signal thread is ready before continuing
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******************************************************************************/

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#if defined(__WIN__) || defined(OS2)
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static void init_signals(void)
{
  int signals[] = {SIGINT,SIGILL,SIGFPE,SIGSEGV,SIGTERM,SIGABRT } ;
  for (uint i=0 ; i < sizeof(signals)/sizeof(int) ; i++)
    signal( signals[i], kill_server) ;
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#if defined(__WIN__)
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  signal(SIGBREAK,SIG_IGN);	//ignore SIGBREAK for NT
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#else
  signal(SIGBREAK, kill_server);
#endif
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}

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static void start_signal_handler(void)
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{}

static void check_data_home(const char *path)
{}
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#elif defined(__NETWARE__)

// down server event callback
void mysql_down_server_cb(void *, void *)
{
  kill_server(0);
}

// destroy callback resources
void mysql_cb_destroy(void *)
{
  UnRegisterEventNotification(eh);  // cleanup down event notification
  NX_UNWRAP_INTERFACE(ref);
}

// initialize callbacks
void mysql_cb_init()
{
  // register for down server event
  void *handle = getnlmhandle();
  rtag_t rt = AllocateResourceTag(handle, "MySQL Down Server Callback",
                                  EventSignature);
  NX_WRAP_INTERFACE((void *)mysql_down_server_cb, 2, (void **)&ref);
  eh = RegisterForEventNotification(rt, EVENT_DOWN_SERVER,
                                    EVENT_PRIORITY_APPLICATION,
                                    NULL, ref, NULL);
  NXVmRegisterExitHandler(mysql_cb_destroy, NULL);  // clean-up
}

static void init_signals(void)
{
  int signals[] = {SIGINT,SIGILL,SIGFPE,SIGSEGV,SIGTERM,SIGABRT};

  for (uint i=0 ; i < sizeof(signals)/sizeof(int) ; i++)
    signal(signals[i], kill_server);
  mysql_cb_init();  // initialize callbacks
}

static void start_signal_handler(void)
{
  // Save vm id of this process
  if (!opt_bootstrap)
  {
    File pidFile;
    if ((pidFile = my_create(pidfile_name,0664, O_WRONLY, MYF(MY_WME))) >= 0)
    {
      char buff[21];
      sprintf(buff,"%lu",(ulong) getpid());
      (void) my_write(pidFile, buff,strlen(buff),MYF(MY_WME));
      (void) my_close(pidFile,MYF(0));
    }
  }
  // no signal handler
}


/*  Warn if the data is on a Traditional volume */

static void check_data_home(const char *path)
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{
}

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#elif defined(__EMX__)
static void sig_reload(int signo)
{
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 // Flush everything
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  reload_acl_and_cache((THD*) 0,REFRESH_LOG, (TABLE_LIST*) 0, NULL);
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  signal(signo, SIG_ACK);
}

static void sig_kill(int signo)
{
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  if (!kill_in_progress)
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  {
    abort_loop=1;				// mark abort for threads
    kill_server((void*) signo);
  }
  signal(signo, SIG_ACK);
}

static void init_signals(void)
{
  signal(SIGQUIT, sig_kill);
  signal(SIGKILL, sig_kill);
  signal(SIGTERM, sig_kill);
  signal(SIGINT,  sig_kill);
  signal(SIGHUP,  sig_reload);	// Flush everything
  signal(SIGALRM, SIG_IGN);
  signal(SIGBREAK,SIG_IGN);
  signal_thread = pthread_self();
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  SIGNAL_THD;
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}
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static void start_signal_handler(void)
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{}
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static void check_data_home(const char *path)
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{}
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#else /* if ! __WIN__ && ! __EMX__ */
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#ifdef HAVE_LINUXTHREADS
#define UNSAFE_DEFAULT_LINUX_THREADS 200
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#endif
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extern "C" sig_handler handle_segfault(int sig)
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{
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  THD *thd=current_thd;
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  /*
    Strictly speaking, one needs a mutex here
    but since we have got SIGSEGV already, things are a mess
    so not having the mutex is not as bad as possibly using a buggy
    mutex - so we keep things simple
  */
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  if (segfaulted)
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  {
    fprintf(stderr, "Fatal signal %d while backtracing\n", sig);
    exit(1);
  }
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  segfaulted = 1;
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  fprintf(stderr,"\
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mysqld got signal %d;\n\
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This could be because you hit a bug. It is also possible that this binary\n\
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or one of the libraries it was linked against is corrupt, improperly built,\n\
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or misconfigured. This error can also be caused by malfunctioning hardware.\n",
	  sig);
  fprintf(stderr, "\
We will try our best to scrape up some info that will hopefully help diagnose\n\
the problem, but since we have already crashed, something is definitely wrong\n\
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and this may fail.\n\n");
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  fprintf(stderr, "key_buffer_size=%lu\n", 
          (ulong) dflt_key_cache_var.buff_size);
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  fprintf(stderr, "read_buffer_size=%ld\n", global_system_variables.read_buff_size);
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  fprintf(stderr, "max_used_connections=%ld\n", max_used_connections);
  fprintf(stderr, "max_connections=%ld\n", max_connections);
  fprintf(stderr, "threads_connected=%d\n", thread_count);
  fprintf(stderr, "It is possible that mysqld could use up to \n\
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key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = %ld K\n\
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bytes of memory\n", ((ulong) dflt_key_cache_var.buff_size +
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		     (global_system_variables.read_buff_size +
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		      global_system_variables.sortbuff_size) *
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		     max_connections)/ 1024);
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  fprintf(stderr, "Hope that's ok; if not, decrease some variables in the equation.\n\n");
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#if defined(HAVE_LINUXTHREADS)
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  if (sizeof(char*) == 4 && thread_count > UNSAFE_DEFAULT_LINUX_THREADS)
  {
    fprintf(stderr, "\
You seem to be running 32-bit Linux and have %d concurrent connections.\n\
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If you have not changed STACK_SIZE in LinuxThreads and built the binary \n\
yourself, LinuxThreads is quite likely to steal a part of the global heap for\n\
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the thread stack. Please read http://www.mysql.com/doc/L/i/Linux.html\n\n",
	    thread_count);
  }
#endif /* HAVE_LINUXTHREADS */
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#ifdef HAVE_STACKTRACE
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  if (!(test_flags & TEST_NO_STACKTRACE))
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  {
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    fprintf(stderr,"thd=%p\n",thd);
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    print_stacktrace(thd ? (gptr) thd->thread_stack : (gptr) 0,
		     thread_stack);
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  }
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  if (thd)
  {
    fprintf(stderr, "Trying to get some variables.\n\
Some pointers may be invalid and cause the dump to abort...\n");
    safe_print_str("thd->query", thd->query, 1024);
    fprintf(stderr, "thd->thread_id=%ld\n", thd->thread_id);
  }
  fprintf(stderr, "\
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The manual page at http://www.mysql.com/doc/en/Crashing.html contains\n\
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information that should help you find out what is causing the crash.\n");
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  fflush(stderr);
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#endif /* HAVE_STACKTRACE */

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 if (test_flags & TEST_CORE_ON_SIGNAL)
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 {
   fprintf(stderr, "Writing a core file\n");
   fflush(stderr);
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   write_core(sig);
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 }
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 exit(1);
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}

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#ifndef SA_RESETHAND
#define SA_RESETHAND 0
#endif
#ifndef SA_NODEFER
#define SA_NODEFER 0
#endif
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static void init_signals(void)
{
  sigset_t set;
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  struct sigaction sa;
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  DBUG_ENTER("init_signals");

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  if (test_flags & TEST_SIGINT)
    sigset(THR_KILL_SIGNAL,end_thread_signal);
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  sigset(THR_SERVER_ALARM,print_signal_warning); // Should never be called!
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  if (!(test_flags & TEST_NO_STACKTRACE) || (test_flags & TEST_CORE_ON_SIGNAL))
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  {
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    sa.sa_flags = SA_RESETHAND | SA_NODEFER;
    sigemptyset(&sa.sa_mask);
    sigprocmask(SIG_SETMASK,&sa.sa_mask,NULL);

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    init_stacktrace();
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#if defined(__amiga__)
    sa.sa_handler=(void(*)())handle_segfault;
#else
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    sa.sa_handler=handle_segfault;
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#endif
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    sigaction(SIGSEGV, &sa, NULL);
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    sigaction(SIGABRT, &sa, NULL);
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#ifdef SIGBUS
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    sigaction(SIGBUS, &sa, NULL);
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#endif
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    sigaction(SIGILL, &sa, NULL);
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    sigaction(SIGFPE, &sa, NULL);
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  }
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#ifdef HAVE_GETRLIMIT
  if (test_flags & TEST_CORE_ON_SIGNAL)
  {
    /* Change limits so that we will get a core file */
    struct rlimit rl;
    rl.rlim_cur = rl.rlim_max = RLIM_INFINITY;
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    if (setrlimit(RLIMIT_CORE, &rl) && global_system_variables.log_warnings)
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      sql_print_error("Warning: setrlimit could not change the size of core files to 'infinity';  We may not be able to generate a core file on signals");
  }
#endif
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  (void) sigemptyset(&set);
#ifdef THREAD_SPECIFIC_SIGPIPE
  sigset(SIGPIPE,abort_thread);
  sigaddset(&set,SIGPIPE);
#else
  (void) signal(SIGPIPE,SIG_IGN);		// Can't know which thread
  sigaddset(&set,SIGPIPE);
#endif
  sigaddset(&set,SIGINT);
  sigaddset(&set,SIGQUIT);
  sigaddset(&set,SIGTERM);
  sigaddset(&set,SIGHUP);
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  /* Fix signals if blocked by parents (can happen on Mac OS X) */
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  sigemptyset(&sa.sa_mask);
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  sa.sa_flags = 0;
  sa.sa_handler = print_signal_warning;
  sigaction(SIGTERM, &sa, (struct sigaction*) 0);
  sa.sa_flags = 0;
  sa.sa_handler = print_signal_warning;
  sigaction(SIGHUP, &sa, (struct sigaction*) 0);
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#ifdef SIGTSTP
  sigaddset(&set,SIGTSTP);
#endif
  sigaddset(&set,THR_SERVER_ALARM);
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  if (test_flags & TEST_SIGINT)
    sigdelset(&set,THR_KILL_SIGNAL);		// May be SIGINT
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  sigdelset(&set,THR_CLIENT_ALARM);		// For alarms
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  sigprocmask(SIG_SETMASK,&set,NULL);
  pthread_sigmask(SIG_SETMASK,&set,NULL);
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  DBUG_VOID_RETURN;
}


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#ifndef EMBEDDED_LIBRARY
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static void start_signal_handler(void)
{
  int error;
  pthread_attr_t thr_attr;
  DBUG_ENTER("start_signal_handler");
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  (void) pthread_attr_init(&thr_attr);
#if !defined(HAVE_DEC_3_2_THREADS)
  pthread_attr_setscope(&thr_attr,PTHREAD_SCOPE_SYSTEM);
  (void) pthread_attr_setdetachstate(&thr_attr,PTHREAD_CREATE_DETACHED);
  if (!(opt_specialflag & SPECIAL_NO_PRIOR))
    my_pthread_attr_setprio(&thr_attr,INTERRUPT_PRIOR);
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  pthread_attr_setstacksize(&thr_attr, 129*1024);
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#endif

  (void) pthread_mutex_lock(&LOCK_thread_count);
  if ((error=pthread_create(&signal_thread,&thr_attr,signal_hand,0)))
  {
    sql_print_error("Can't create interrupt-thread (error %d, errno: %d)",
		    error,errno);
    exit(1);
  }
  (void) pthread_cond_wait(&COND_thread_count,&LOCK_thread_count);
  pthread_mutex_unlock(&LOCK_thread_count);

  (void) pthread_attr_destroy(&thr_attr);
  DBUG_VOID_RETURN;
}


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/* This threads handles all signals and alarms */
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/* ARGSUSED */
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extern "C" void *signal_hand(void *arg __attribute__((unused)))
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{
  sigset_t set;
  int sig;
  my_thread_init();				// Init new thread
  DBUG_ENTER("signal_hand");
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  signal_thread_in_use= 1;

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  /*
    Setup alarm handler
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    This should actually be '+ max_number_of_slaves' instead of +10,
    but the +10 should be quite safe.
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  */
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  init_thr_alarm(max_connections+max_insert_delayed_threads+10);
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#if SIGINT != THR_KILL_SIGNAL
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  if (test_flags & TEST_SIGINT)
  {
    (void) sigemptyset(&set);			// Setup up SIGINT for debug
    (void) sigaddset(&set,SIGINT);		// For debugging
    (void) pthread_sigmask(SIG_UNBLOCK,&set,NULL);
  }
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#endif
  (void) sigemptyset(&set);			// Setup up SIGINT for debug
#ifdef USE_ONE_SIGNAL_HAND
  (void) sigaddset(&set,THR_SERVER_ALARM);	// For alarms
#endif
  (void) sigaddset(&set,SIGQUIT);
  (void) sigaddset(&set,SIGTERM);
#if THR_CLIENT_ALARM != SIGHUP
  (void) sigaddset(&set,SIGHUP);
#endif
  (void) sigaddset(&set,SIGTSTP);

  /* Save pid to this process (or thread on Linux) */
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  if (!opt_bootstrap)
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  {
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    File pidFile;
    if ((pidFile = my_create(pidfile_name,0664, O_WRONLY, MYF(MY_WME))) >= 0)
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    {
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      char buff[21];
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      ulong length= my_sprintf(buff, (buff,"%lu",(ulong) getpid()));
      (void) my_write(pidFile, buff, length, MYF(MY_WME));
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      (void) my_close(pidFile,MYF(0));
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    }
  }
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#ifdef HAVE_STACK_TRACE_ON_SEGV
  if (opt_do_pstack)
  {
    sprintf(pstack_file_name,"mysqld-%lu-%%d-%%d.backtrace", (ulong)getpid());
    pstack_install_segv_action(pstack_file_name);
  }
#endif /* HAVE_STACK_TRACE_ON_SEGV */
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  /*
    signal to start_signal_handler that we are ready
    This works by waiting for start_signal_handler to free mutex,
    after which we signal it that we are ready.
    At this pointer there is no other threads running, so there
    should not be any other pthread_cond_signal() calls.
  */
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  (void) pthread_mutex_lock(&LOCK_thread_count);
  (void) pthread_mutex_unlock(&LOCK_thread_count);
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  (void) pthread_cond_broadcast(&COND_thread_count);
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  (void) pthread_sigmask(SIG_BLOCK,&set,NULL);
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  for (;;)
  {
    int error;					// Used when debugging
    if (shutdown_in_progress && !abort_loop)
    {
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      sig= SIGTERM;
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      error=0;
    }
    else
      while ((error=my_sigwait(&set,&sig)) == EINTR) ;
    if (cleanup_done)
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    {
      my_thread_end();
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      signal_thread_in_use= 0;
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      pthread_exit(0);				// Safety
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    }
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    switch (sig) {
    case SIGTERM:
    case SIGQUIT:
    case SIGKILL:
#ifdef EXTRA_DEBUG
      sql_print_error("Got signal %d to shutdown mysqld",sig);
#endif
      DBUG_PRINT("info",("Got signal: %d  abort_loop: %d",sig,abort_loop));
      if (!abort_loop)
      {
	abort_loop=1;				// mark abort for threads
#ifdef USE_ONE_SIGNAL_HAND
	pthread_t tmp;
	if (!(opt_specialflag & SPECIAL_NO_PRIOR))
	  my_pthread_attr_setprio(&connection_attrib,INTERRUPT_PRIOR);
	if (pthread_create(&tmp,&connection_attrib, kill_server_thread,
			   (void*) sig))
	  sql_print_error("Error: Can't create thread to kill server");
#else
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	kill_server((void*) sig);	// MIT THREAD has a alarm thread
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#endif
      }
      break;
    case SIGHUP:
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      if (!abort_loop)
      {
	reload_acl_and_cache((THD*) 0,
			     (REFRESH_LOG | REFRESH_TABLES | REFRESH_FAST |
			      REFRESH_STATUS | REFRESH_GRANT |
			      REFRESH_THREADS | REFRESH_HOSTS),
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			     (TABLE_LIST*) 0, NULL); // Flush logs
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	mysql_print_status((THD*) 0);		// Send debug some info
      }
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      break;
#ifdef USE_ONE_SIGNAL_HAND
    case THR_SERVER_ALARM:
      process_alarm(sig);			// Trigger alarms.
      break;
#endif
    default:
#ifdef EXTRA_DEBUG
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      sql_print_error("Warning: Got signal: %d  error: %d",sig,error); /* purecov: tested */
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#endif
      break;					/* purecov: tested */
    }
  }
  return(0);					/* purecov: deadcode */
}
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#endif /*!EMBEDDED_LIBRARY*/
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static void check_data_home(const char *path)
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{}
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#endif	/* __WIN__*/


/*
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  All global error messages are sent here where the first one is stored for
  the client
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*/


/* ARGSUSED */
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extern "C" int my_message_sql(uint error, const char *str,
			      myf MyFlags __attribute__((unused)))
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{
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  THD *thd;
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  DBUG_ENTER("my_message_sql");
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  DBUG_PRINT("error", ("Message: '%s'", str));
  if ((thd= current_thd))
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  {
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    /*
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      thd->lex.current_select == 0 if lex structure is not inited
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      (not query command (COM_QUERY))
    */
    if (thd->lex.current_select &&
	thd->lex.current_select->no_error && !thd->is_fatal_error)
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    {
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      DBUG_PRINT("error", ("above error converted to warning"));
      push_warning(thd, MYSQL_ERROR::WARN_LEVEL_ERROR, error, str);
    }
    else
    {
      NET *net= &thd->net;
      net->report_error= 1;
      if (!net->last_error[0])			// Return only first message
      {
	strmake(net->last_error, str, sizeof(net->last_error)-1);
	net->last_errno= error ? error : ER_UNKNOWN_ERROR;
      }
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    }
  }
  else
    sql_print_error("%s: %s",my_progname,str); /* purecov: inspected */
  DBUG_RETURN(0);
}

#ifdef __WIN__

struct utsname
{
  char nodename[FN_REFLEN];
};

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int uname(struct utsname *a)
{
  return -1;
}


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extern "C" pthread_handler_decl(handle_shutdown,arg)
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{
  MSG msg;
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  SHUTDOWN_THD;
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  my_thread_init();

  /* this call should create the message queue for this thread */
  PeekMessage(&msg, NULL, 1, 65534,PM_NOREMOVE);
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#if !defined(EMBEDDED_LIBRARY)
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  if (WaitForSingleObject(hEventShutdown,INFINITE)==WAIT_OBJECT_0)
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#endif /* EMBEDDED_LIBRARY */
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     kill_server(MYSQL_KILL_SIGNAL);
  return 0;
}

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int STDCALL handle_kill(ulong ctrl_type)
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{
  if (ctrl_type == CTRL_CLOSE_EVENT ||
      ctrl_type == CTRL_SHUTDOWN_EVENT)
  {
    kill_server(MYSQL_KILL_SIGNAL);
    return TRUE;
  }
  return FALSE;
}
#endif

1960

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#ifdef OS2
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extern "C" pthread_handler_decl(handle_shutdown,arg)
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{
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  SHUTDOWN_THD;
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  my_thread_init();

  // wait semaphore
  pthread_cond_wait( &eventShutdown, NULL);

  // close semaphore and kill server
  pthread_cond_destroy( &eventShutdown);

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  /*
    Exit main loop on main thread, so kill will be done from
    main thread (this is thread 2)
  */
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  abort_loop = 1;

  // unblock select()
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  so_cancel(ip_sock);
  so_cancel(unix_sock);
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  return 0;
}
#endif

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const char *load_default_groups[]= { "mysqld","server",MYSQL_BASE_VERSION,0 };
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bool open_log(MYSQL_LOG *log, const char *hostname,
	      const char *opt_name, const char *extension,
	      const char *index_file_name,
	      enum_log_type type, bool read_append,
1994
	      bool no_auto_events, ulong max_size)
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{
  char tmp[FN_REFLEN];
  if (!opt_name || !opt_name[0])
  {
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    /*
      TODO: The following should be using fn_format();  We just need to
      first change fn_format() to cut the file name if it's too long.
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    */
    strmake(tmp,hostname,FN_REFLEN-5);
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    strmov(fn_ext(tmp),extension);
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    opt_name=tmp;
  }
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  // get rid of extension if the log is binary to avoid problems
2008 2009
  if (type == LOG_BIN)
  {
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    char *p = fn_ext(opt_name);
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    uint length=(uint) (p-opt_name);
    strmake(tmp,opt_name,min(length,FN_REFLEN));
    opt_name=tmp;
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  }
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  return log->open(opt_name, type, 0, index_file_name,
		   (read_append) ? SEQ_READ_APPEND : WRITE_CACHE,
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		   no_auto_events, max_size);
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}


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/*
  Initialize one of the global date/time format variables

  SYNOPSIS
    init_global_datetime_format()
    format_type		What kind of format should be supported
    var_ptr		Pointer to variable that should be updated
  
  NOTES
    The default value is taken from either opt_date_time_formats[] or
    the ISO format (ANSI SQL)

  RETURN
    0 ok
    1 error
*/

bool init_global_datetime_format(timestamp_type format_type,
				 DATE_TIME_FORMAT **var_ptr)
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{
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  /* Get command line option */
  const char *str= opt_date_time_formats[format_type];
  DATE_TIME_FORMAT *format;
2044

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  if (!str)					// No specified format
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  {
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    str= get_date_time_format_str(&known_date_time_formats[ISO_FORMAT],
				  format_type);
    /*
      Set the "command line" option to point to the generated string so
      that we can set global formats back to default
    */
    opt_date_time_formats[format_type]= str;
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  }
2055
  if (!(*var_ptr= date_time_format_make(format_type, str, strlen(str))))
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  {
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    fprintf(stderr, "Wrong date/time format specifier: %s\n", str);
    return 1;
2059
  }
2060
  return 0;
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}


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static int init_common_variables(const char *conf_file_name, int argc,
				 char **argv, const char **groups)
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{
  my_umask=0660;		// Default umask for new files
  my_umask_dir=0700;		// Default umask for new directories
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  umask(((~my_umask) & 0666));
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  tzset();			// Set tzname

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  max_system_variables.pseudo_thread_id= (ulong)~0;
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  start_time=time((time_t*) 0);
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  mysql_init_variables();
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#ifdef OS2
  {
    // fix timezone for daylight saving
    struct tm *ts = localtime(&start_time);
    if (ts->tm_isdst > 0)
      _timezone -= 3600;
  }
#endif
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#ifdef HAVE_TZNAME
  {
    struct tm tm_tmp;
    localtime_r(&start_time,&tm_tmp);
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    strmov(time_zone,tzname[tm_tmp.tm_isdst != 0 ? 1 : 0]);
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  }
#endif

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  /*
    Init mutexes for the global MYSQL_LOG objects.
    As safe_mutex depends on what MY_INIT() does, we can't init the mutexes of
    global MYSQL_LOGs in their constructors, because then they would be inited
    before MY_INIT(). So we do it here.
  */
  mysql_log.init_pthread_objects();
  mysql_update_log.init_pthread_objects();
  mysql_slow_log.init_pthread_objects();
  mysql_bin_log.init_pthread_objects();
  
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  if (gethostname(glob_hostname,sizeof(glob_hostname)-4) < 0)
    strmov(glob_hostname,"mysql");
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  strmake(pidfile_name, glob_hostname, sizeof(pidfile_name)-5);
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  strmov(fn_ext(pidfile_name),".pid");		// Add proper extension
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#ifndef DBUG_OFF
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  strxmov(strend(server_version),MYSQL_SERVER_SUFFIX,"-debug",NullS);
#else
  strmov(strend(server_version),MYSQL_SERVER_SUFFIX);
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#endif
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  load_defaults(conf_file_name, groups, &argc, &argv);
  defaults_argv=argv;
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  get_options(argc,argv);
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  if (init_thread_environment())
    return 1;
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  if (opt_log || opt_update_log || opt_slow_log || opt_bin_log)
    strcat(server_version,"-log");
  DBUG_PRINT("info",("%s  Ver %s for %s on %s\n",my_progname,
		     server_version, SYSTEM_TYPE,MACHINE_TYPE));

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#if defined( SET_RLIMIT_NOFILE) || defined( OS2)
  /* connections and databases needs lots of files */
  {
    uint wanted_files=10+(uint) max(max_connections*5,
				    max_connections+table_cache_size*2);
    set_if_bigger(wanted_files, open_files_limit);
    // Note that some system returns 0 if we succeed here:
    uint files=set_maximum_open_files(wanted_files);
    if (files && files < wanted_files && ! open_files_limit)
    {
      max_connections=	(ulong) min((files-10),max_connections);
      table_cache_size= (ulong) max((files-10-max_connections)/2,64);
      DBUG_PRINT("warning",
		 ("Changed limits: max_connections: %ld  table_cache: %ld",
		  max_connections,table_cache_size));
      sql_print_error("Warning: Changed limits: max_connections: %ld  table_cache: %ld",max_connections,table_cache_size);
    }
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    open_files_limit= files;
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  }
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#else
  open_files_limit= 0;		/* Can't set or detect limit */
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#endif
  unireg_init(opt_specialflag); /* Set up extern variabels */
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  if (init_errmessage())	/* Read error messages from file */
    return 1;
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  init_client_errs();
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  lex_init();
  item_init();
  set_var_init();
  mysys_uses_curses=0;
#ifdef USE_REGEX
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  regex_init(&my_charset_latin1);
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#endif
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  if (!(default_charset_info= get_charset_by_csname(default_character_set_name,
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						    MY_CS_PRIMARY,
						    MYF(MY_WME))))
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    return 1;
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  if (default_collation_name)
  {
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    CHARSET_INFO *default_collation;
    default_collation= get_charset_by_name(default_collation_name, MYF(0));
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    if (!default_collation || !my_charset_same(default_charset_info,
					       default_collation))
    {
      sql_print_error(ER(ER_COLLATION_CHARSET_MISMATCH),
		      default_collation_name,
		      default_charset_info->csname);
      return 1;
    }
    default_charset_info= default_collation;
  }
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  /* Set collactions that depends on the default collation */
  global_system_variables.collation_server=	 default_charset_info;
  global_system_variables.collation_database=	 default_charset_info;
  global_system_variables.collation_connection=  default_charset_info;
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  global_system_variables.character_set_results= default_charset_info;
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  global_system_variables.character_set_client=  default_charset_info;
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  if (use_temp_pool && bitmap_init(&temp_pool,0,1024,1))
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    return 1;
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  return 0;
}
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static int init_thread_environment()
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{
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  (void) pthread_mutex_init(&LOCK_mysql_create_db,MY_MUTEX_INIT_SLOW);
  (void) pthread_mutex_init(&LOCK_Acl,MY_MUTEX_INIT_SLOW);
  (void) pthread_mutex_init(&LOCK_open,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_thread_count,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_mapped_file,MY_MUTEX_INIT_SLOW);
  (void) pthread_mutex_init(&LOCK_status,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_error_log,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_delayed_insert,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_delayed_status,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_delayed_create,MY_MUTEX_INIT_SLOW);
  (void) pthread_mutex_init(&LOCK_manager,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_crypt,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_bytes_sent,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_bytes_received,MY_MUTEX_INIT_FAST);
  (void) pthread_mutex_init(&LOCK_user_conn, MY_MUTEX_INIT_FAST);
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  (void) pthread_mutex_init(&LOCK_active_mi, MY_MUTEX_INIT_FAST);
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  (void) pthread_mutex_init(&LOCK_global_system_variables, MY_MUTEX_INIT_FAST);
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  (void) pthread_mutex_init(&LOCK_assign, MY_MUTEX_INIT_FAST);
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  (void) my_rwlock_init(&LOCK_grant, NULL);
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  (void) pthread_cond_init(&COND_thread_count,NULL);
  (void) pthread_cond_init(&COND_refresh,NULL);
  (void) pthread_cond_init(&COND_thread_cache,NULL);
  (void) pthread_cond_init(&COND_flush_thread_cache,NULL);
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  (void) pthread_cond_init(&COND_manager,NULL);
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#ifdef HAVE_REPLICATION
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  (void) pthread_mutex_init(&LOCK_rpl_status, MY_MUTEX_INIT_FAST);
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  (void) pthread_cond_init(&COND_rpl_status, NULL);
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#endif
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  /* Parameter for threads created for connections */
  (void) pthread_attr_init(&connection_attrib);
  (void) pthread_attr_setdetachstate(&connection_attrib,
				     PTHREAD_CREATE_DETACHED);
  pthread_attr_setscope(&connection_attrib, PTHREAD_SCOPE_SYSTEM);
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  if (!(opt_specialflag & SPECIAL_NO_PRIOR))
    my_pthread_attr_setprio(&connection_attrib,WAIT_PRIOR);
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  if (pthread_key_create(&THR_THD,NULL) ||
      pthread_key_create(&THR_MALLOC,NULL))
  {
    sql_print_error("Can't create thread-keys");
    return 1;
  }
  return 0;
}

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static void init_ssl()
{
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#ifdef HAVE_OPENSSL
  if (opt_use_ssl)
  {
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    /* having ssl_acceptor_fd != 0 signals the use of SSL */
    ssl_acceptor_fd= new_VioSSLAcceptorFd(opt_ssl_key, opt_ssl_cert,
					  opt_ssl_ca, opt_ssl_capath,
					  opt_ssl_cipher);
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    DBUG_PRINT("info",("ssl_acceptor_fd: %lx", (long) ssl_acceptor_fd));
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    if (!ssl_acceptor_fd)
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      opt_use_ssl = 0;
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  }
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  if (des_key_file)
    load_des_key_file(des_key_file);
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#endif /* HAVE_OPENSSL */
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}
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static int init_server_components()
{
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  DBUG_ENTER("init_server_components");
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  table_cache_init();
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  assign_cache_init();
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  hostname_cache_init();
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  query_cache_result_size_limit(query_cache_limit);
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  query_cache_set_min_res_unit(query_cache_min_res_unit);
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  query_cache_resize(query_cache_size);
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  randominit(&sql_rand,(ulong) start_time,(ulong) start_time/2);
  reset_floating_point_exceptions();
  init_thr_lock();
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#ifdef HAVE_REPLICATION
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  init_slave_list();
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#endif
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  /* Setup log files */
  if (opt_log)
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    open_log(&mysql_log, glob_hostname, opt_logname, ".log", NullS,
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	     LOG_NORMAL, 0, 0, 0);
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  if (opt_update_log)
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  {
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    open_log(&mysql_update_log, glob_hostname, opt_update_logname, "",
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	     NullS, LOG_NEW, 0, 0, 0);
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    using_update_log=1;
  }
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  if (opt_slow_log)
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    open_log(&mysql_slow_log, glob_hostname, opt_slow_logname, "-slow.log",
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 	     NullS, LOG_NORMAL, 0, 0, 0);
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  if (opt_bin_log)
  {
    open_log(&mysql_bin_log, glob_hostname, opt_bin_logname, "-bin",
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	     opt_binlog_index_name, LOG_BIN, 0, 0, max_binlog_size);
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    using_update_log=1;
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#ifdef HAVE_REPLICATION
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    if (expire_logs_days)
    {
      long purge_time= time(0) - expire_logs_days*24*60*60;
      if (purge_time >= 0)
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	mysql_bin_log.purge_logs_before_date(purge_time);
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    }
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#endif
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  }
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  else if (opt_log_slave_updates)
  {
      sql_print_error("\
Warning: you need to use --log-bin to make --log-slave-updates work. \
Now disabling --log-slave-updates.");
  }
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  if (opt_error_log)
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  {
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    if (!log_error_file_ptr[0])
      fn_format(log_error_file, glob_hostname, mysql_data_home, ".err", 0);
    else
      fn_format(log_error_file, log_error_file_ptr, mysql_data_home, ".err",
		MY_UNPACK_FILENAME | MY_SAFE_PATH);
    if (!log_error_file[0])
      opt_error_log= 1;				// Too long file name
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    else
    {
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#ifndef EMBEDDED_LIBRARY
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      if (freopen(log_error_file, "a+", stdout))
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#endif
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	freopen(log_error_file, "a+", stderr);
    }
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  }
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  if (ha_init())
  {
    sql_print_error("Can't init databases");
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    unireg_abort(1);
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  }
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  if (opt_myisam_log)
    (void) mi_log(1);
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  ha_key_cache(&dflt_key_cache_var);
  process_key_caches(&ha_key_cache);
  
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#if defined(HAVE_MLOCKALL) && defined(MCL_CURRENT)
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  if (locked_in_memory && !geteuid())
  {
    if (mlockall(MCL_CURRENT))
    {
      sql_print_error("Warning: Failed to lock memory. Errno: %d\n",errno);
    }
    else
      locked_in_memory=1;
  }
#else
  locked_in_memory=0;
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#endif
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  ft_init_stopwords();
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  init_max_user_conn();
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  init_update_queries();
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  DBUG_RETURN(0);
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}
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static void create_maintenance_thread()
{
  if (
#ifdef HAVE_BERKELEY_DB
      !berkeley_skip ||
#endif
      (flush_time && flush_time != ~(ulong) 0L))
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  {
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    pthread_t hThread;
    if (pthread_create(&hThread,&connection_attrib,handle_manager,0))
      sql_print_error("Warning: Can't create thread to manage maintenance");
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  }
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}

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static void create_shutdown_thread()
{
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#if !defined(EMBEDDED_LIBRARY)
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#ifdef __WIN__
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  hEventShutdown=CreateEvent(0, FALSE, FALSE, shutdown_event_name);
  pthread_t hThread;
  if (pthread_create(&hThread,&connection_attrib,handle_shutdown,0))
    sql_print_error("Warning: Can't create thread to handle shutdown requests");
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  // On "Stop Service" we have to do regular shutdown
  Service.SetShutdownEvent(hEventShutdown);
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#endif
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#ifdef OS2
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  pthread_cond_init(&eventShutdown, NULL);
  pthread_t hThread;
  if (pthread_create(&hThread,&connection_attrib,handle_shutdown,0))
    sql_print_error("Warning: Can't create thread to handle shutdown requests");
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#endif
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#endif // EMBEDDED_LIBRARY 
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}
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#if defined(__NT__) || defined(HAVE_SMEM)
static void handle_connections_methods()
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{
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  pthread_t hThread;
  DBUG_ENTER("handle_connections_methods");
#ifdef __NT__
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  if (hPipe == INVALID_HANDLE_VALUE &&
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      (!have_tcpip || opt_disable_networking) &&
      !opt_enable_shared_memory)
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  {
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    sql_print_error("TCP/IP,--shared-memory or --named-pipe should be configured on NT OS");
    unireg_abort(1);				// Will not return
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  }
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#endif

  pthread_mutex_lock(&LOCK_thread_count);
  (void) pthread_cond_init(&COND_handler_count,NULL);
  handler_count=0;
#ifdef __NT__
  if (hPipe != INVALID_HANDLE_VALUE)
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  {
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    handler_count++;
    if (pthread_create(&hThread,&connection_attrib,
		       handle_connections_namedpipes, 0))
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    {
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      sql_print_error("Warning: Can't create thread to handle named pipes");
      handler_count--;
    }
  }
#endif /* __NT__ */
  if (have_tcpip && !opt_disable_networking)
  {
    handler_count++;
    if (pthread_create(&hThread,&connection_attrib,
		       handle_connections_sockets, 0))
    {
      sql_print_error("Warning: Can't create thread to handle TCP/IP");
      handler_count--;
    }
  }
#ifdef HAVE_SMEM
  if (opt_enable_shared_memory)
  {
    handler_count++;
    if (pthread_create(&hThread,&connection_attrib,
		       handle_connections_shared_memory, 0))
    {
      sql_print_error("Warning: Can't create thread to handle shared memory");
      handler_count--;
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    }
  }
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#endif 
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  while (handler_count > 0)
    pthread_cond_wait(&COND_handler_count,&LOCK_thread_count);
  pthread_mutex_unlock(&LOCK_thread_count);
  DBUG_VOID_RETURN;
}
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void decrement_handler_count()
{
  pthread_mutex_lock(&LOCK_thread_count);
  handler_count--;
  pthread_mutex_unlock(&LOCK_thread_count);
  pthread_cond_signal(&COND_handler_count);
}
#else
#define decrement_handler_count()
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#endif /* defined(__NT__) || defined(HAVE_SMEM) */


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#ifndef EMBEDDED_LIBRARY
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#ifdef __WIN__
int win_main(int argc, char **argv)
#else
int main(int argc, char **argv)
#endif
{
  DEBUGGER_OFF;

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  MY_INIT(argv[0]);		// init my_sys library & pthreads

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#ifdef _CUSTOMSTARTUPCONFIG_
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  if (_cust_check_startup())
  {
    / * _cust_check_startup will report startup failure error * /
    exit( 1 );
  }
#endif
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  if (init_common_variables(MYSQL_CONFIG_NAME,
			    argc, argv, load_default_groups))
    unireg_abort(1);				// Will do exit
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  init_signals();
  if (!(opt_specialflag & SPECIAL_NO_PRIOR))
    my_pthread_setprio(pthread_self(),CONNECT_PRIOR);
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  pthread_attr_setstacksize(&connection_attrib,thread_stack);
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#ifdef HAVE_PTHREAD_ATTR_GETSTACKSIZE
  {
    /* Retrieve used stack size;  Needed for checking stack overflows */
    size_t stack_size= 0;
    pthread_attr_getstacksize(&connection_attrib, &stack_size);
    /* We must check if stack_size = 0 as Solaris 2.9 can return 0 here */
    if (stack_size && stack_size < thread_stack)
    {
      if (global_system_variables.log_warnings)
	sql_print_error("Warning: Asked for %ld thread stack, but got %ld",
			thread_stack, stack_size);
      thread_stack= stack_size;
    }
  }
#endif
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  (void) thr_setconcurrency(concurrency);	// 10 by default
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  select_thread=pthread_self();
  select_thread_in_use=1;
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  init_ssl();

#ifdef HAVE_LIBWRAP
  libwrapName= my_progname+dirname_length(my_progname);
  openlog(libwrapName, LOG_PID, LOG_AUTH);
#endif

  /*
    We have enough space for fiddling with the argv, continue
  */
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  check_data_home(mysql_real_data_home);
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  if (my_setwd(mysql_real_data_home,MYF(MY_WME)))
  {
    unireg_abort(1);				/* purecov: inspected */
  }
  mysql_data_home= mysql_data_home_buff;
  mysql_data_home[0]=FN_CURLIB;		// all paths are relative from here
  mysql_data_home[1]=0;
  server_init();

  if (opt_bin_log && !server_id)
  {
    server_id= !master_host ? 1 : 2;
#ifdef EXTRA_DEBUG
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    switch (server_id) {
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    case 1:
      sql_print_error("\
Warning: You have enabled the binary log, but you haven't set server-id:\n\
Updates will be logged to the binary log, but connections to slaves will\n\
not be accepted.");
      break;
    case 2:
      sql_print_error("\
Warning: You should set server-id to a non-0 value if master_host is set.\n\
The server will not act as a slave.");
      break;
    }
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#endif
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  }

  if (init_server_components())
    exit(1);

#ifdef __WIN__
#define MYSQL_ERR_FILE "mysql.err"
  if (!opt_console)
  {
    freopen(MYSQL_ERR_FILE,"a+",stdout);
    freopen(MYSQL_ERR_FILE,"a+",stderr);
    FreeConsole();				// Remove window
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  }
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#endif

  /*
    init signals & alarm
    After this we can't quit by a simple unireg_abort
  */
  error_handler_hook = my_message_sql;
  start_signal_handler();				// Creates pidfile
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  if (acl_init((THD *)0, opt_noacl))
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  {
    abort_loop=1;
    select_thread_in_use=0;
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#ifndef __NETWARE__
    (void) pthread_kill(signal_thread, MYSQL_KILL_SIGNAL);
#endif /* __NETWARE__ */
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#ifndef __WIN__
    if (!opt_bootstrap)
      (void) my_delete(pidfile_name,MYF(MY_WME));	// Not needed anymore
#endif
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    if (unix_sock != INVALID_SOCKET)
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      unlink(mysqld_unix_port);
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    exit(1);
  }
  if (!opt_noacl)
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    (void) grant_init((THD *)0);
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#ifdef HAVE_DLOPEN
  if (!opt_noacl)
    udf_init();
#endif
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  if (opt_bootstrap) /* If running with bootstrap, do not start replication. */
    opt_skip_slave_start= 1;
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  /* init_slave() must be called after the thread keys are created */
  init_slave();
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  if (opt_bootstrap)
  {
    int error=bootstrap(stdin);
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    end_thr_alarm(1);				// Don't allow alarms
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    unireg_abort(error ? 1 : 0);
  }
  if (opt_init_file)
  {
    if (read_init_file(opt_init_file))
    {
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      end_thr_alarm(1);				// Don't allow alarms
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      unireg_abort(1);
    }
  }
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  create_shutdown_thread();
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  create_maintenance_thread();

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  printf(ER(ER_READY),my_progname,server_version,
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	 ((unix_sock == INVALID_SOCKET) ? (char*) "" : mysqld_unix_port),
	 mysqld_port);
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  fflush(stdout);

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#if defined(__NT__) || defined(HAVE_SMEM)
  handle_connections_methods();
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#else
  handle_connections_sockets(0);
#endif /* __NT__ */

  /* (void) pthread_attr_destroy(&connection_attrib); */

  DBUG_PRINT("quit",("Exiting main thread"));

#ifndef __WIN__
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#ifdef EXTRA_DEBUG2
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  sql_print_error("Before Lock_thread_count");
#endif
  (void) pthread_mutex_lock(&LOCK_thread_count);
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  DBUG_PRINT("quit", ("Got thread_count mutex"));
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  select_thread_in_use=0;			// For close_connections
  (void) pthread_mutex_unlock(&LOCK_thread_count);
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  (void) pthread_cond_broadcast(&COND_thread_count);
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#ifdef EXTRA_DEBUG2
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  sql_print_error("After lock_thread_count");
#endif
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#endif /* __WIN__ */
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  /* Wait until cleanup is done */
  (void) pthread_mutex_lock(&LOCK_thread_count);
  while (!ready_to_exit)
    pthread_cond_wait(&COND_thread_count,&LOCK_thread_count);
  (void) pthread_mutex_unlock(&LOCK_thread_count);
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#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
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  if (Service.IsNT() && start_mode)
    Service.Stop();
  else
  {
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    Service.SetShutdownEvent(0);
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    if (hEventShutdown)
      CloseHandle(hEventShutdown);
  }
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#endif
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#ifndef __NETWARE__
  {
    uint i;
    /*
      Wait up to 10 seconds for signal thread to die. We use this mainly to
      avoid getting warnings that my_thread_end has not been called
    */
    for (i= 0 ; i < 100 && signal_thread_in_use; i++)
    {
      if (pthread_kill(signal_thread, MYSQL_KILL_SIGNAL))
	break;
      my_sleep(100);				// Give it time to die
    }
  }
#endif
  clean_up_mutexes();
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  my_end(opt_endinfo ? MY_CHECK_ERROR | MY_GIVE_INFO : 0);
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  exit(0);
  return(0);					/* purecov: deadcode */
}

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#endif /* EMBEDDED_LIBRARY */
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/****************************************************************************
  Main and thread entry function for Win32
  (all this is needed only to run mysqld as a service on WinNT)
****************************************************************************/

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#if defined(__WIN__) && !defined(EMBEDDED_LIBRARY)
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int mysql_service(void *p)
{
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  if (use_opt_args)
    win_main(opt_argc, opt_argv);
  else
    win_main(Service.my_argc, Service.my_argv);
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  return 0;
}

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/* Quote string if it contains space, else copy */

static char *add_quoted_string(char *to, const char *from, char *to_end)
{
  uint length= (uint) (to_end-to);

  if (!strchr(from, ' '))
    return strnmov(to, from, length);
  return strxnmov(to, length, "\"", from, "\"", NullS);
}


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/*
  Handle basic handling of services, like installation and removal

  SYNOPSIS
    default_service_handling()
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    argv		Pointer to argument list
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    servicename		Internal name of service
    displayname		Display name of service (in taskbar ?)
    file_path		Path to this program
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    startup_option	Startup option to mysqld
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  RETURN VALUES
    0		option handled
    1		Could not handle option
 */

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static bool
default_service_handling(char **argv,
			 const char *servicename,
			 const char *displayname,
			 const char *file_path,
			 const char *extra_opt)
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{
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  char path_and_service[FN_REFLEN+FN_REFLEN+32], *pos, *end;
  end= path_and_service + sizeof(path_and_service)-1;

  /* We have to quote filename if it contains spaces */
  pos= add_quoted_string(path_and_service, file_path, end);
  if (*extra_opt)
  {
    /* Add (possible quoted) option after file_path */
    *pos++= ' ';
    pos= add_quoted_string(pos, extra_opt, end);
  }
  *pos= 0;					// Ensure end null

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  if (Service.got_service_option(argv, "install"))
  {
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    Service.Install(1, servicename, displayname, path_and_service);
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    return 0;
  }
  if (Service.got_service_option(argv, "install-manual"))
  {
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    Service.Install(0, servicename, displayname, path_and_service);
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    return 0;
  }
  if (Service.got_service_option(argv, "remove"))
  {
    Service.Remove(servicename);
    return 0;
  }
  return 1;
}


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int main(int argc, char **argv)
{
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  /* When several instances are running on the same machine, we
     need to have an  unique  named  hEventShudown  through the
     application PID e.g.: MySQLShutdown1890; MySQLShutdown2342
  */ 
  int2str((int) GetCurrentProcessId(),strmov(shutdown_event_name,
          "MySQLShutdown"), 10);
  
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  if (Service.GetOS())	/* true NT family */
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  {
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    char file_path[FN_REFLEN];
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    my_path(file_path, argv[0], "");		      /* Find name in path */
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    fn_format(file_path,argv[0],file_path,"",
	      MY_REPLACE_DIR | MY_UNPACK_FILENAME | MY_RESOLVE_SYMLINKS);
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    if (argc == 2)
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    {
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      if (!default_service_handling(argv, MYSQL_SERVICENAME, MYSQL_SERVICENAME,
				   file_path, ""))
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	return 0;
      if (Service.IsService(argv[1]))
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      {
        /* start an optional service */
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        load_default_groups[0]= argv[1];
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        start_mode= 1;
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        Service.Init(argv[1], mysql_service);
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        return 0;
      }
    }
    else if (argc == 3) /* install or remove any optional service */
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    {
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      if (!default_service_handling(argv, argv[2], argv[2], file_path,
				    argv[2]))
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	return 0;
      if (Service.IsService(argv[2]))
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      {
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	/*
	  mysqld was started as
	  mysqld --defaults-file=my_path\my.ini service-name
	*/
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	use_opt_args=1;
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	opt_argc= 2;				// Skip service-name
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	opt_argv=argv;
	start_mode= 1;
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	Service.Init(argv[2], mysql_service);
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	return 0;
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      }
    }
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    else if (argc == 4)
    {
      /*
	Install an optional service with optional config file
	mysqld --install-manual mysqldopt --defaults-file=c:\miguel\my.ini
      */
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      if (!default_service_handling(argv, argv[2], argv[2], file_path,
				    argv[3]))
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	return 0;
    }
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    else if (argc == 1 && Service.IsService(MYSQL_SERVICENAME))
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    {
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      /* start the default service */
      start_mode= 1;
      Service.Init(MYSQL_SERVICENAME, mysql_service);
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      return 0;
    }
  }
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  /* Start as standalone server */
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  Service.my_argc=argc;
  Service.my_argv=argv;
  mysql_service(NULL);
  return 0;
}
#endif


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/*
  Execute all commands from a file. Used by the mysql_install_db script to
  create MySQL privilege tables without having to start a full MySQL server.
*/
2848

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static int bootstrap(FILE *file)
{
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  int error= 0;
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  DBUG_ENTER("bootstrap");
2853

2854
  THD *thd= new THD;
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  thd->bootstrap=1;
  thd->client_capabilities=0;
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  my_net_init(&thd->net,(st_vio*) 0);
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  thd->max_client_packet_length= thd->net.max_packet;
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  thd->master_access= ~0;
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  thd->thread_id=thread_id++;
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  thread_count++;
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  bootstrap_file=file;
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#ifndef EMBEDDED_LIBRARY			// TODO:  Enable this
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  if (pthread_create(&thd->real_id,&connection_attrib,handle_bootstrap,
		     (void*) thd))
  {
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    sql_print_error("Warning: Can't create thread to handle bootstrap");
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    DBUG_RETURN(-1);
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  }
  /* Wait for thread to die */
  (void) pthread_mutex_lock(&LOCK_thread_count);
  while (thread_count)
  {
    (void) pthread_cond_wait(&COND_thread_count,&LOCK_thread_count);
    DBUG_PRINT("quit",("One thread died (count=%u)",thread_count));
  }
  (void) pthread_mutex_unlock(&LOCK_thread_count);
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#else
  thd->mysql= 0;
  handle_bootstrap((void *)thd);
#endif

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  error= thd->is_fatal_error;
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#ifndef EMBEDDED_LIBRARY
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  net_end(&thd->net);
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#endif
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  thd->cleanup();
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  delete thd;
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  DBUG_RETURN(error);
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}

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static bool read_init_file(char *file_name)
{
  FILE *file;
  DBUG_ENTER("read_init_file");
  DBUG_PRINT("enter",("name: %s",file_name));
  if (!(file=my_fopen(file_name,O_RDONLY,MYF(MY_WME))))
    return(1);
  bootstrap(file);				/* Ignore errors from this */
  (void) my_fclose(file,MYF(MY_WME));
  return 0;
}


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#ifndef EMBEDDED_LIBRARY
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static void create_new_thread(THD *thd)
{
  DBUG_ENTER("create_new_thread");

  NET *net=&thd->net;				// For easy ref
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  net->read_timeout = (uint) connect_timeout;
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  if (protocol_version > 9)
    net->return_errno=1;

  /* don't allow too many connections */
  if (thread_count - delayed_insert_threads >= max_connections+1 || abort_loop)
  {
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    DBUG_PRINT("error",("Too many connections"));
2921
    close_connection(thd, ER_CON_COUNT_ERROR, 1);
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    delete thd;
    DBUG_VOID_RETURN;
  }
2925
  pthread_mutex_lock(&LOCK_thread_count);
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  if (thread_count-delayed_insert_threads > max_used_connections)
    max_used_connections=thread_count-delayed_insert_threads;
  thd->thread_id=thread_id++;
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  thd->real_id=pthread_self();			// Keep purify happy

  /* Start a new thread to handle connection */
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#ifdef ONE_THREAD
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  if (test_flags & TEST_NO_THREADS)		// For debugging under Linux
  {
    thread_cache_size=0;			// Safety
    thread_count++;
    threads.append(thd);
    thd->real_id=pthread_self();
    (void) pthread_mutex_unlock(&LOCK_thread_count);
    handle_one_connection((void*) thd);
  }
  else
#endif
  {
    if (cached_thread_count > wake_thread)
    {
      start_cached_thread(thd);
    }
    else
    {
      int error;
      thread_count++;
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      thread_created++;
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      threads.append(thd);
      DBUG_PRINT("info",(("creating thread %d"), thd->thread_id));
      thd->connect_time = time(NULL);
      if ((error=pthread_create(&thd->real_id,&connection_attrib,
				handle_one_connection,
				(void*) thd)))
      {
	DBUG_PRINT("error",
		   ("Can't create thread to handle request (error %d)",
		    error));
	thread_count--;
	thd->killed=1;				// Safety
	(void) pthread_mutex_unlock(&LOCK_thread_count);
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	statistic_increment(aborted_connects,&LOCK_status);
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	net_printf(thd,ER_CANT_CREATE_THREAD,error);
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	(void) pthread_mutex_lock(&LOCK_thread_count);
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	close_connection(thd,0,0);
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	delete thd;
	(void) pthread_mutex_unlock(&LOCK_thread_count);
	DBUG_VOID_RETURN;
      }
    }
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    (void) pthread_mutex_unlock(&LOCK_thread_count);

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  }
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  DBUG_PRINT("info",("Thread created"));
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  DBUG_VOID_RETURN;
}
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#endif /* EMBEDDED_LIBRARY */

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#ifdef SIGNALS_DONT_BREAK_READ
inline void kill_broken_server()
{
  /* hack to get around signals ignored in syscalls for problem OS's */
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  if (
#if !defined(__NETWARE__)
      unix_sock == INVALID_SOCKET ||
#endif
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      (!opt_disable_networking && ip_sock == INVALID_SOCKET))
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  {
    select_thread_in_use = 0;
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#ifdef __NETWARE__
    kill_server(MYSQL_KILL_SIGNAL); /* never returns */
#else
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    kill_server((void*)MYSQL_KILL_SIGNAL); /* never returns */
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#endif /* __NETWARE__ */
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  }
}
#define MAYBE_BROKEN_SYSCALL kill_broken_server();
#else
#define MAYBE_BROKEN_SYSCALL
#endif
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	/* Handle new connections and spawn new process to handle them */

3011 3012 3013
#ifndef EMBEDDED_LIBRARY
extern "C" pthread_handler_decl(handle_connections_sockets,
				arg __attribute__((unused)))
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{
  my_socket sock,new_sock;
  uint error_count=0;
  uint max_used_connection= (uint) (max(ip_sock,unix_sock)+1);
  fd_set readFDs,clientFDs;
  THD *thd;
  struct sockaddr_in cAddr;
  int ip_flags=0,socket_flags=0,flags;
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  st_vio *vio_tmp;
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  DBUG_ENTER("handle_connections_sockets");

  LINT_INIT(new_sock);

  (void) my_pthread_getprio(pthread_self());		// For debugging

  FD_ZERO(&clientFDs);
  if (ip_sock != INVALID_SOCKET)
  {
    FD_SET(ip_sock,&clientFDs);
#ifdef HAVE_FCNTL
    ip_flags = fcntl(ip_sock, F_GETFL, 0);
#endif
  }
#ifdef HAVE_SYS_UN_H
  FD_SET(unix_sock,&clientFDs);
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#ifdef HAVE_FCNTL
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  socket_flags=fcntl(unix_sock, F_GETFL, 0);
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#endif
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#endif

  DBUG_PRINT("general",("Waiting for connections."));
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  MAYBE_BROKEN_SYSCALL;
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  while (!abort_loop)
  {
    readFDs=clientFDs;
3049
#ifdef HPUX10
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    if (select(max_used_connection,(int*) &readFDs,0,0,0) < 0)
      continue;
#else
    if (select((int) max_used_connection,&readFDs,0,0,0) < 0)
    {
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      if (socket_errno != SOCKET_EINTR)
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      {
	if (!select_errors++ && !abort_loop)	/* purecov: inspected */
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	  sql_print_error("mysqld: Got error %d from select",socket_errno); /* purecov: inspected */
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      }
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      MAYBE_BROKEN_SYSCALL
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      continue;
    }
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#endif	/* HPUX10 */
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    if (abort_loop)
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    {
      MAYBE_BROKEN_SYSCALL;
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      break;
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    }
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    /* Is this a new connection request ? */
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#ifdef HAVE_SYS_UN_H
    if (FD_ISSET(unix_sock,&readFDs))
    {
      sock = unix_sock;
      flags= socket_flags;
    }
    else
#endif
    {
      sock = ip_sock;
      flags= ip_flags;
    }

#if !defined(NO_FCNTL_NONBLOCK)
    if (!(test_flags & TEST_BLOCKING))
    {
#if defined(O_NONBLOCK)
      fcntl(sock, F_SETFL, flags | O_NONBLOCK);
#elif defined(O_NDELAY)
      fcntl(sock, F_SETFL, flags | O_NDELAY);
#endif
    }
#endif /* NO_FCNTL_NONBLOCK */
    for (uint retry=0; retry < MAX_ACCEPT_RETRY; retry++)
    {
      size_socket length=sizeof(struct sockaddr_in);
      new_sock = accept(sock, my_reinterpret_cast(struct sockaddr *) (&cAddr),
			&length);
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#ifdef __NETWARE__ 
      // TODO: temporary fix, waiting for TCP/IP fix - DEFECT000303149
      if ((new_sock == INVALID_SOCKET) && (socket_errno == EINVAL))
      {
        kill_server(SIGTERM);
      }
#endif
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      if (new_sock != INVALID_SOCKET ||
	  (socket_errno != SOCKET_EINTR && socket_errno != SOCKET_EAGAIN))
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	break;
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      MAYBE_BROKEN_SYSCALL;
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#if !defined(NO_FCNTL_NONBLOCK)
      if (!(test_flags & TEST_BLOCKING))
      {
	if (retry == MAX_ACCEPT_RETRY - 1)
	  fcntl(sock, F_SETFL, flags);		// Try without O_NONBLOCK
      }
#endif
    }
#if !defined(NO_FCNTL_NONBLOCK)
    if (!(test_flags & TEST_BLOCKING))
      fcntl(sock, F_SETFL, flags);
#endif
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    if (new_sock == INVALID_SOCKET)
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    {
      if ((error_count++ & 255) == 0)		// This can happen often
	sql_perror("Error in accept");
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      MAYBE_BROKEN_SYSCALL;
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      if (socket_errno == SOCKET_ENFILE || socket_errno == SOCKET_EMFILE)
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	sleep(1);				// Give other threads some time
      continue;
    }

#ifdef HAVE_LIBWRAP
    {
      if (sock == ip_sock)
      {
	struct request_info req;
	signal(SIGCHLD, SIG_DFL);
	request_init(&req, RQ_DAEMON, libwrapName, RQ_FILE, new_sock, NULL);
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	my_fromhost(&req);
	if (!my_hosts_access(&req))
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	{
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	  /*
	    This may be stupid but refuse() includes an exit(0)
	    which we surely don't want...
	    clean_exit() - same stupid thing ...
	  */
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	  syslog(deny_severity, "refused connect from %s",
		 my_eval_client(&req));
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	  /*
	    C++ sucks (the gibberish in front just translates the supplied
	    sink function pointer in the req structure from a void (*sink)();
	    to a void(*sink)(int) if you omit the cast, the C++ compiler
	    will cry...
	  */
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	  if (req.sink)
	    ((void (*)(int))req.sink)(req.fd);

3159
	  (void) shutdown(new_sock,2);
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	  (void) closesocket(new_sock);
	  continue;
	}
      }
    }
#endif /* HAVE_LIBWRAP */

    {
      size_socket dummyLen;
      struct sockaddr dummy;
      dummyLen = sizeof(struct sockaddr);
      if (getsockname(new_sock,&dummy, &dummyLen) < 0)
      {
	sql_perror("Error on new connection socket");
	(void) shutdown(new_sock,2);
	(void) closesocket(new_sock);
	continue;
      }
    }

    /*
    ** Don't allow too many connections
    */

    if (!(thd= new THD))
    {
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      (void) shutdown(new_sock,2);
      VOID(closesocket(new_sock));
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      continue;
    }
    if (!(vio_tmp=vio_new(new_sock,
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			  sock == unix_sock ? VIO_TYPE_SOCKET :
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			  VIO_TYPE_TCPIP,
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			  sock == unix_sock)) ||
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	my_net_init(&thd->net,vio_tmp))
    {
      if (vio_tmp)
	vio_delete(vio_tmp);
      else
      {
	(void) shutdown(new_sock,2);
	(void) closesocket(new_sock);
      }
      delete thd;
      continue;
    }
    if (sock == unix_sock)
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      thd->host=(char*) my_localhost;
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#ifdef __WIN__
    /* Set default wait_timeout */
    ulong wait_timeout= global_system_variables.net_wait_timeout * 1000;
    (void) setsockopt(new_sock, SOL_SOCKET, SO_RCVTIMEO, (char*)&wait_timeout,
                    sizeof(wait_timeout));
#endif
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    create_new_thread(thd);
  }

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#ifdef OS2
  // kill server must be invoked from thread 1!
  kill_server(MYSQL_KILL_SIGNAL);
#endif
3221
  decrement_handler_count();
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  DBUG_RETURN(0);
}


#ifdef __NT__
3227
extern "C" pthread_handler_decl(handle_connections_namedpipes,arg)
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{
  HANDLE hConnectedPipe;
  BOOL fConnected;
  THD *thd;
  my_thread_init();
  DBUG_ENTER("handle_connections_namedpipes");
  (void) my_pthread_getprio(pthread_self());		// For debugging

  DBUG_PRINT("general",("Waiting for named pipe connections."));
  while (!abort_loop)
  {
    /* wait for named pipe connection */
    fConnected = ConnectNamedPipe( hPipe, NULL );
    if (abort_loop)
      break;
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    if (!fConnected)
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      fConnected = GetLastError() == ERROR_PIPE_CONNECTED;
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    if (!fConnected)
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    {
      CloseHandle( hPipe );
      if ((hPipe = CreateNamedPipe(szPipeName,
				   PIPE_ACCESS_DUPLEX,
				   PIPE_TYPE_BYTE |
				   PIPE_READMODE_BYTE |
				   PIPE_WAIT,
				   PIPE_UNLIMITED_INSTANCES,
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				   (int) global_system_variables.net_buffer_length,
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				   (int) global_system_variables.net_buffer_length,
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				   NMPWAIT_USE_DEFAULT_WAIT,
				   &saPipeSecurity )) ==
	  INVALID_HANDLE_VALUE )
      {
	sql_perror("Can't create new named pipe!");
	break;					// Abort
      }
    }
    hConnectedPipe = hPipe;
    /* create new pipe for new connection */
    if ((hPipe = CreateNamedPipe(szPipeName,
				 PIPE_ACCESS_DUPLEX,
				 PIPE_TYPE_BYTE |
				 PIPE_READMODE_BYTE |
				 PIPE_WAIT,
				 PIPE_UNLIMITED_INSTANCES,
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				 (int) global_system_variables.net_buffer_length,
				 (int) global_system_variables.net_buffer_length,
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				 NMPWAIT_USE_DEFAULT_WAIT,
				 &saPipeSecurity)) ==
	INVALID_HANDLE_VALUE)
    {
      sql_perror("Can't create new named pipe!");
      hPipe=hConnectedPipe;
      continue;					// We have to try again
    }

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    if (!(thd = new THD))
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    {
      DisconnectNamedPipe( hConnectedPipe );
      CloseHandle( hConnectedPipe );
      continue;
    }
    if (!(thd->net.vio = vio_new_win32pipe(hConnectedPipe)) ||
	my_net_init(&thd->net, thd->net.vio))
    {
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      close_connection(thd, ER_OUT_OF_RESOURCES, 1);
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      delete thd;
      continue;
    }
    /* host name is unknown */
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    thd->host = my_strdup(my_localhost,MYF(0)); /* Host is unknown */
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    create_new_thread(thd);
  }

3301
  decrement_handler_count();
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  DBUG_RETURN(0);
}
#endif /* __NT__ */

3306

3307
/*
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  Thread of shared memory's service

  SYNOPSIS
    pthread_handler_decl()
    handle_connections_shared_memory Thread handle
    arg                              Arguments of thread
*/
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#ifdef HAVE_SMEM
pthread_handler_decl(handle_connections_shared_memory,arg)
{
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/*
  event_connect_request is event object for start connection actions
3321
  event_connect_answer is event object for confirm, that server put data
3322
  handle_connect_file_map is file-mapping object, use for create shared memory
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  handle_connect_map is pointer on shared memory
  handle_map is pointer on shared memory for client
  event_server_wrote,
  event_server_read,
  event_client_wrote,
  event_client_read are events for transfer data between server and client
  handle_file_map is file-mapping object, use for create shared memory
*/
  HANDLE handle_connect_file_map = NULL;
  char  *handle_connect_map = NULL;
  HANDLE event_connect_request = NULL;
  HANDLE event_connect_answer = NULL;
  ulong smem_buffer_length = shared_memory_buffer_length + 4;
  ulong connect_number = 1;
  my_bool error_allow;
  THD *thd;
  char tmp[63];
  char *suffix_pos;
  char connect_number_char[22], *p;
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  my_thread_init();
  DBUG_ENTER("handle_connections_shared_memorys");
  DBUG_PRINT("general",("Waiting for allocated shared memory."));


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  /*
    The name of event and file-mapping events create agree next rule:
      shared_memory_base_name+unique_part
    Where:
      shared_memory_base_name is unique value for each server
      unique_part is unique value for each object (events and file-mapping)
  */
3355
  suffix_pos = strxmov(tmp,shared_memory_base_name,"_",NullS);
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  strmov(suffix_pos, "CONNECT_REQUEST");
  if ((event_connect_request = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
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  {
    sql_perror("Can't create shared memory service ! The request event don't create.");
    goto error;
  }
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  strmov(suffix_pos, "CONNECT_ANSWER");
  if ((event_connect_answer = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
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  {
    sql_perror("Can't create shared memory service ! The answer event don't create.");
    goto error;
  }
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  strmov(suffix_pos, "CONNECT_DATA");
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  if ((handle_connect_file_map = CreateFileMapping(INVALID_HANDLE_VALUE,NULL,PAGE_READWRITE,
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                                 0,sizeof(connect_number),tmp)) == 0)
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  {
    sql_perror("Can't create shared memory service ! File mapping don't create.");
    goto error;
  }
  if ((handle_connect_map = (char *)MapViewOfFile(handle_connect_file_map,FILE_MAP_WRITE,0,0,
3376
                            sizeof(DWORD))) == 0)
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  {
    sql_perror("Can't create shared memory service ! Map of memory don't create.");
    goto error;
  }


  while (!abort_loop)
  {
/*
 Wait a request from client
*/
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    WaitForSingleObject(event_connect_request,INFINITE);
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    error_allow = FALSE;

    HANDLE handle_client_file_map = NULL;
    char  *handle_client_map = NULL;
    HANDLE event_client_wrote = NULL;
    HANDLE event_client_read = NULL;
    HANDLE event_server_wrote = NULL;
    HANDLE event_server_read = NULL;

    p = int2str(connect_number, connect_number_char, 10);
/*
  The name of event and file-mapping events create agree next rule:
    shared_memory_base_name+unique_part+number_of_connection
  Where:
    shared_memory_base_name is uniquel value for each server
    unique_part is unique value for each object (events and file-mapping)
    number_of_connection is number of connection between server and client
*/
    suffix_pos = strxmov(tmp,shared_memory_base_name,"_",connect_number_char,"_",NullS);
    strmov(suffix_pos, "DATA");
    if ((handle_client_file_map = CreateFileMapping(INVALID_HANDLE_VALUE,NULL,
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                                  PAGE_READWRITE,0,smem_buffer_length,tmp)) == 0)
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    {
      sql_perror("Can't create connection with client in shared memory service ! File mapping don't create.");
      error_allow = TRUE;
      goto errorconn;
    }
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    if ((handle_client_map = (char*)MapViewOfFile(handle_client_file_map,FILE_MAP_WRITE,0,0,smem_buffer_length)) == 0)
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    {
      sql_perror("Can't create connection with client in shared memory service ! Map of memory don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    strmov(suffix_pos, "CLIENT_WROTE");
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    if ((event_client_wrote = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
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    {
      sql_perror("Can't create connection with client in shared memory service ! CW event don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    strmov(suffix_pos, "CLIENT_READ");
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    if ((event_client_read = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
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    {
      sql_perror("Can't create connection with client in shared memory service ! CR event don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    strmov(suffix_pos, "SERVER_READ");
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    if ((event_server_read = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
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    {
      sql_perror("Can't create connection with client in shared memory service ! SR event don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    strmov(suffix_pos, "SERVER_WROTE");
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    if ((event_server_wrote = CreateEvent(NULL,FALSE,FALSE,tmp)) == 0)
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    {
      sql_perror("Can't create connection with client in shared memory service ! SW event don't create.");
      error_allow = TRUE;
      goto errorconn;
    }

    if (abort_loop) break;
    if ( !(thd = new THD))
    {
      error_allow = TRUE;
      goto errorconn;
    }

/*
Send number of connection to client
*/
    int4store(handle_connect_map, connect_number);
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/*
  Send number of connection to client
*/
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    if (!SetEvent(event_connect_answer))
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    {
      sql_perror("Can't create connection with client in shared memory service ! Can't send answer event.");
      error_allow = TRUE;
      goto errorconn;
    }

/*
  Set event that client should receive data
*/
    if (!SetEvent(event_client_read))
    {
      sql_perror("Can't create connection with client in shared memory service ! Can't set client to read's mode.");
      error_allow = TRUE;
      goto errorconn;
    }
    if (!(thd->net.vio = vio_new_win32shared_memory(&thd->net,handle_client_file_map,handle_client_map,event_client_wrote,
                         event_client_read,event_server_wrote,event_server_read)) ||
                          my_net_init(&thd->net, thd->net.vio))
    {
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      close_connection(thd, ER_OUT_OF_RESOURCES, 1);
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      delete thd;
      error_allow = TRUE;
    }
    /* host name is unknown */
errorconn:
    if (error_allow)
    {
      if (!handle_client_map) UnmapViewOfFile(handle_client_map);
      if (!handle_client_file_map) CloseHandle(handle_client_file_map);
      if (!event_server_wrote) CloseHandle(event_server_wrote);
      if (!event_server_read) CloseHandle(event_server_read);
      if (!event_client_wrote) CloseHandle(event_client_wrote);
      if (!event_client_read) CloseHandle(event_client_read);
      continue;
    }
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    thd->host = my_strdup(my_localhost,MYF(0)); /* Host is unknown */
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    create_new_thread(thd);
    uint4korr(connect_number++);
  }
error:
  if (!handle_connect_map) UnmapViewOfFile(handle_connect_map);
  if (!handle_connect_file_map) CloseHandle(handle_connect_file_map);
  if (!event_connect_answer) CloseHandle(event_connect_answer);
  if (!event_connect_request) CloseHandle(event_connect_request);
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  decrement_handler_count();
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  DBUG_RETURN(0);
}
#endif /* HAVE_SMEM */
3520
#endif /* EMBEDDED_LIBRARY */
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/****************************************************************************
  Handle start options
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******************************************************************************/

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enum options_mysqld
3528
{
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  OPT_ISAM_LOG=256,            OPT_SKIP_NEW, 
  OPT_SKIP_GRANT,              OPT_SKIP_LOCK, 
  OPT_ENABLE_LOCK,             OPT_USE_LOCKING,
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  OPT_SOCKET,                  OPT_UPDATE_LOG,
  OPT_BIN_LOG,                 OPT_SKIP_RESOLVE,
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  OPT_SKIP_NETWORKING,         OPT_BIN_LOG_INDEX,
  OPT_BIND_ADDRESS,            OPT_PID_FILE,
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  OPT_SKIP_PRIOR,              OPT_BIG_TABLES,
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  OPT_STANDALONE,              OPT_ONE_THREAD,
  OPT_CONSOLE,                 OPT_LOW_PRIORITY_UPDATES,
3539
  OPT_SKIP_HOST_CACHE,         OPT_SHORT_LOG_FORMAT,
3540
  OPT_FLUSH,                   OPT_SAFE,
3541
  OPT_BOOTSTRAP,               OPT_SKIP_SHOW_DB,
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  OPT_TABLE_TYPE,              OPT_INIT_FILE,
  OPT_DELAY_KEY_WRITE_ALL,     OPT_SLOW_QUERY_LOG,
3544
  OPT_DELAY_KEY_WRITE,	       OPT_CHARSETS_DIR,
3545
  OPT_BDB_HOME,                OPT_BDB_LOG,
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  OPT_BDB_TMP,                 OPT_BDB_NOSYNC,
3547
  OPT_BDB_LOCK,                OPT_BDB,
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  OPT_BDB_NO_RECOVER,	    OPT_BDB_SHARED,
  OPT_MASTER_HOST,             OPT_MASTER_USER,
  OPT_MASTER_PASSWORD,         OPT_MASTER_PORT,
  OPT_MASTER_INFO_FILE,        OPT_MASTER_CONNECT_RETRY,
  OPT_MASTER_RETRY_COUNT,
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  OPT_MASTER_SSL,              OPT_MASTER_SSL_KEY,
  OPT_MASTER_SSL_CERT,         OPT_MASTER_SSL_CAPATH,
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  OPT_MASTER_SSL_CIPHER,       OPT_MASTER_SSL_CA,
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  OPT_SQL_BIN_UPDATE_SAME,     OPT_REPLICATE_DO_DB,
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  OPT_REPLICATE_IGNORE_DB,     OPT_LOG_SLAVE_UPDATES,
  OPT_BINLOG_DO_DB,            OPT_BINLOG_IGNORE_DB,
  OPT_WANT_CORE,               OPT_CONCURRENT_INSERT,
  OPT_MEMLOCK,                 OPT_MYISAM_RECOVER,
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  OPT_REPLICATE_REWRITE_DB,    OPT_SERVER_ID,
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  OPT_SKIP_SLAVE_START,        OPT_SKIP_INNOBASE,
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  OPT_SAFEMALLOC_MEM_LIMIT,    OPT_REPLICATE_DO_TABLE,
  OPT_REPLICATE_IGNORE_TABLE,  OPT_REPLICATE_WILD_DO_TABLE,
  OPT_REPLICATE_WILD_IGNORE_TABLE,
  OPT_DISCONNECT_SLAVE_EVENT_COUNT,
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  OPT_ABORT_SLAVE_EVENT_COUNT,
  OPT_INNODB_DATA_HOME_DIR,
  OPT_INNODB_DATA_FILE_PATH,
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  OPT_INNODB_LOG_GROUP_HOME_DIR,
  OPT_INNODB_LOG_ARCH_DIR,
  OPT_INNODB_LOG_ARCHIVE,
  OPT_INNODB_FLUSH_LOG_AT_TRX_COMMIT,
  OPT_INNODB_FLUSH_METHOD,
  OPT_INNODB_FAST_SHUTDOWN,
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  OPT_INNODB_FILE_PER_TABLE,
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  OPT_SAFE_SHOW_DB,
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  OPT_INNODB, OPT_ISAM, OPT_SKIP_SAFEMALLOC,
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  OPT_TEMP_POOL, OPT_TX_ISOLATION,
  OPT_SKIP_STACK_TRACE, OPT_SKIP_SYMLINKS,
  OPT_MAX_BINLOG_DUMP_EVENTS, OPT_SPORADIC_BINLOG_DUMP_FAIL,
  OPT_SAFE_USER_CREATE, OPT_SQL_MODE,
  OPT_HAVE_NAMED_PIPE,
  OPT_DO_PSTACK, OPT_REPORT_HOST,
  OPT_REPORT_USER, OPT_REPORT_PASSWORD, OPT_REPORT_PORT,
  OPT_SHOW_SLAVE_AUTH_INFO, OPT_OLD_RPL_COMPAT,
  OPT_SLAVE_LOAD_TMPDIR, OPT_NO_MIX_TYPE,
  OPT_RPL_RECOVERY_RANK,OPT_INIT_RPL_ROLE,
  OPT_RELAY_LOG, OPT_RELAY_LOG_INDEX, OPT_RELAY_LOG_INFO_FILE,
  OPT_SLAVE_SKIP_ERRORS, OPT_DES_KEY_FILE, OPT_LOCAL_INFILE,
  OPT_SSL_SSL, OPT_SSL_KEY, OPT_SSL_CERT, OPT_SSL_CA,
  OPT_SSL_CAPATH, OPT_SSL_CIPHER,
  OPT_BACK_LOG, OPT_BINLOG_CACHE_SIZE,
  OPT_CONNECT_TIMEOUT, OPT_DELAYED_INSERT_TIMEOUT,
  OPT_DELAYED_INSERT_LIMIT, OPT_DELAYED_QUEUE_SIZE,
  OPT_FLUSH_TIME, OPT_FT_MIN_WORD_LEN,
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  OPT_FT_MAX_WORD_LEN, OPT_FT_QUERY_EXPANSION_LIMIT, OPT_FT_STOPWORD_FILE,
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  OPT_INTERACTIVE_TIMEOUT, OPT_JOIN_BUFF_SIZE,
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  OPT_KEY_BUFFER_SIZE, OPT_KEY_CACHE_BLOCK_SIZE,
  OPT_KEY_CACHE_DIVISION_LIMIT, OPT_KEY_CACHE_AGE_THRESHOLD,
  OPT_LONG_QUERY_TIME,
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  OPT_LOWER_CASE_TABLE_NAMES, OPT_MAX_ALLOWED_PACKET,
  OPT_MAX_BINLOG_CACHE_SIZE, OPT_MAX_BINLOG_SIZE,
  OPT_MAX_CONNECTIONS, OPT_MAX_CONNECT_ERRORS,
  OPT_MAX_DELAYED_THREADS, OPT_MAX_HEP_TABLE_SIZE,
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  OPT_MAX_JOIN_SIZE, OPT_MAX_RELAY_LOG_SIZE, OPT_MAX_SORT_LENGTH, 
  OPT_MAX_SEEKS_FOR_KEY, OPT_MAX_TMP_TABLES, OPT_MAX_USER_CONNECTIONS,
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  OPT_MAX_LENGTH_FOR_SORT_DATA,
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  OPT_MAX_WRITE_LOCK_COUNT, OPT_BULK_INSERT_BUFFER_SIZE,
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  OPT_MAX_ERROR_COUNT, OPT_MAX_PREP_STMT,
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  OPT_MYISAM_BLOCK_SIZE, OPT_MYISAM_MAX_EXTRA_SORT_FILE_SIZE,
  OPT_MYISAM_MAX_SORT_FILE_SIZE, OPT_MYISAM_SORT_BUFFER_SIZE,
  OPT_NET_BUFFER_LENGTH, OPT_NET_RETRY_COUNT,
  OPT_NET_READ_TIMEOUT, OPT_NET_WRITE_TIMEOUT,
3615
  OPT_OPEN_FILES_LIMIT,
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  OPT_PRELOAD_BUFFER_SIZE,
3617
  OPT_QUERY_CACHE_LIMIT, OPT_QUERY_CACHE_MIN_RES_UNIT, OPT_QUERY_CACHE_SIZE,
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  OPT_QUERY_CACHE_TYPE, OPT_RECORD_BUFFER,
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  OPT_RECORD_RND_BUFFER, OPT_RELAY_LOG_SPACE_LIMIT, OPT_RELAY_LOG_PURGE,
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  OPT_SLAVE_NET_TIMEOUT, OPT_SLAVE_COMPRESSED_PROTOCOL, OPT_SLOW_LAUNCH_TIME,
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  OPT_READONLY, OPT_DEBUGGING,
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  OPT_SORT_BUFFER, OPT_TABLE_CACHE,
  OPT_THREAD_CONCURRENCY, OPT_THREAD_CACHE_SIZE,
  OPT_TMP_TABLE_SIZE, OPT_THREAD_STACK,
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  OPT_WAIT_TIMEOUT, OPT_MYISAM_REPAIR_THREADS,
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  OPT_INNODB_MIRRORED_LOG_GROUPS,
  OPT_INNODB_LOG_FILES_IN_GROUP,
  OPT_INNODB_LOG_FILE_SIZE,
  OPT_INNODB_LOG_BUFFER_SIZE,
  OPT_INNODB_BUFFER_POOL_SIZE,
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  OPT_INNODB_BUFFER_POOL_AWE_MEM_MB,
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  OPT_INNODB_ADDITIONAL_MEM_POOL_SIZE,
  OPT_INNODB_FILE_IO_THREADS,
  OPT_INNODB_LOCK_WAIT_TIMEOUT,
  OPT_INNODB_THREAD_CONCURRENCY,
  OPT_INNODB_FORCE_RECOVERY,
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  OPT_INNODB_MAX_DIRTY_PAGES_PCT,
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  OPT_INNODB_OPEN_FILES,
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  OPT_BDB_CACHE_SIZE,
  OPT_BDB_LOG_BUFFER_SIZE,
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  OPT_BDB_MAX_LOCK,
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  OPT_ERROR_LOG_FILE,
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  OPT_DEFAULT_WEEK_FORMAT,
  OPT_RANGE_ALLOC_BLOCK_SIZE,
  OPT_QUERY_ALLOC_BLOCK_SIZE, OPT_QUERY_PREALLOC_SIZE,
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  OPT_TRANS_ALLOC_BLOCK_SIZE, OPT_TRANS_PREALLOC_SIZE,
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  OPT_ENABLE_SHARED_MEMORY,
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  OPT_SHARED_MEMORY_BASE_NAME,
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  OPT_OLD_PASSWORDS,
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  OPT_EXPIRE_LOGS_DAYS,
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  OPT_GROUP_CONCAT_MAX_LEN,
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  OPT_DEFAULT_COLLATION,
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  OPT_SECURE_AUTH,
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  OPT_DATE_FORMAT,
  OPT_TIME_FORMAT,
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  OPT_DATETIME_FORMAT,
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  OPT_LOG_QUERIES_NOT_USING_INDEXES
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};
3659

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#define LONG_TIMEOUT ((ulong) 3600L*24L*365L)

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struct my_option my_long_options[] =
3664
{
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  {"ansi", 'a', "Use ANSI SQL syntax instead of MySQL syntax.", 0, 0, 0,
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   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"basedir", 'b',
   "Path to installation directory. All paths are usually resolved relative to this.",
   (gptr*) &mysql_home_ptr, (gptr*) &mysql_home_ptr, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
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#ifdef HAVE_BERKELEY_DB
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  {"bdb-home", OPT_BDB_HOME, "Berkeley home directory.", (gptr*) &berkeley_home,
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   (gptr*) &berkeley_home, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"bdb-lock-detect", OPT_BDB_LOCK,
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   "Berkeley lock detect (DEFAULT, OLDEST, RANDOM or YOUNGEST, # sec).",
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   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"bdb-logdir", OPT_BDB_LOG, "Berkeley DB log file directory.",
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   (gptr*) &berkeley_logdir, (gptr*) &berkeley_logdir, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"bdb-no-recover", OPT_BDB_NO_RECOVER,
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   "Don't try to recover Berkeley DB tables on start.", 0, 0, 0, GET_NO_ARG,
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   NO_ARG, 0, 0, 0, 0, 0, 0},
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  {"bdb-no-sync", OPT_BDB_NOSYNC, "Don't synchronously flush logs.", 0, 0, 0,
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   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"bdb-shared-data", OPT_BDB_SHARED,
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   "Start Berkeley DB in multi-process mode.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
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   0, 0, 0, 0, 0},
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  {"bdb-tmpdir", OPT_BDB_TMP, "Berkeley DB tempfile name.",
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   (gptr*) &berkeley_tmpdir, (gptr*) &berkeley_tmpdir, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif /* HAVE_BERKELEY_DB */
3692
  {"bdb", OPT_BDB, "Enable Berkeley DB (if this version of MySQL supports it). \
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Disable with --skip-bdb (will save memory).",
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   (gptr*) &opt_bdb, (gptr*) &opt_bdb, 0, GET_BOOL, NO_ARG, 1, 0, 0,
   0, 0, 0},
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  {"big-tables", OPT_BIG_TABLES,
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   "Allow big result sets by saving all temporary sets on file (Solves most 'table full' errors).",
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   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"binlog-do-db", OPT_BINLOG_DO_DB,
   "Tells the master it should log updates for the specified database, and exclude all others not explicitly mentioned.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"binlog-ignore-db", OPT_BINLOG_IGNORE_DB,
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   "Tells the master that updates to the given database should not be logged tothe binary log.",
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   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"bind-address", OPT_BIND_ADDRESS, "IP address to bind to.",
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   (gptr*) &my_bind_addr_str, (gptr*) &my_bind_addr_str, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"bootstrap", OPT_BOOTSTRAP, "Used by mysql installation scripts.", 0, 0, 0,
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   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
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  {"console", OPT_CONSOLE, "Write error output on screen; Don't remove the console window on windows.",
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   (gptr*) &opt_console, (gptr*) &opt_console, 0, GET_BOOL, NO_ARG, 0, 0, 0,
   0, 0, 0},
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#ifdef __WIN__
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  {"standalone", OPT_STANDALONE,
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  "Dummy option to start as a standalone program (NT).", 0, 0, 0, GET_NO_ARG,
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   NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
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  {"core-file", OPT_WANT_CORE, "Write core on errors.", 0, 0, 0, GET_NO_ARG,
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   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"chroot", 'r', "Chroot mysqld daemon during startup.",
   (gptr*) &mysqld_chroot, (gptr*) &mysqld_chroot, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
  {"character-sets-dir", OPT_CHARSETS_DIR,
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   "Directory where character sets are.", (gptr*) &charsets_dir,
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   (gptr*) &charsets_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"datadir", 'h', "Path to the database root.", (gptr*) &mysql_data_home,
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   (gptr*) &mysql_data_home, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#ifndef DBUG_OFF
  {"debug", '#', "Debug log.", (gptr*) &default_dbug_option,
   (gptr*) &default_dbug_option, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
#ifdef SAFEMALLOC
  {"skip-safemalloc", OPT_SKIP_SAFEMALLOC,
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   "Don't use the memory allocation checking.", 0, 0, 0, GET_NO_ARG, NO_ARG,
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   0, 0, 0, 0, 0, 0},
#endif
#endif
#ifdef HAVE_OPENSSL
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  {"des-key-file", OPT_DES_KEY_FILE,
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   "Load keys for des_encrypt() and des_encrypt from given file.",
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   (gptr*) &des_key_file, (gptr*) &des_key_file, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
#endif /* HAVE_OPENSSL */
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  {"default-character-set", 'C', "Set the default character set.",
   (gptr*) &default_character_set_name, (gptr*) &default_character_set_name,
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   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
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  {"default-collation", OPT_DEFAULT_COLLATION, "Set the default collation.",
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   (gptr*) &default_collation_name, (gptr*) &default_collation_name,
   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0 },
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  {"default-table-type", OPT_TABLE_TYPE,
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   "Set the default table type for tables.", 0, 0,
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   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
3752
  {"delay-key-write", OPT_DELAY_KEY_WRITE, "Type of DELAY_KEY_WRITE.",
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   0,0,0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"delay-key-write-for-all-tables", OPT_DELAY_KEY_WRITE_ALL,
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   "Don't flush key buffers between writes for any MyISAM table (Deprecated option, use --delay-key-write=all instead).",
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   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
3757
  {"enable-locking", OPT_ENABLE_LOCK,
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   "Deprecated option, use --external-locking instead.",
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   (gptr*) &opt_external_locking, (gptr*) &opt_external_locking,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
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#ifdef __NT__
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  {"enable-named-pipe", OPT_HAVE_NAMED_PIPE, "Enable the named pipe (NT).",
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   (gptr*) &opt_enable_named_pipe, (gptr*) &opt_enable_named_pipe, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
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  {"enable-pstack", OPT_DO_PSTACK, "Print a symbolic stack trace on failure.",
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   (gptr*) &opt_do_pstack, (gptr*) &opt_do_pstack, 0, GET_BOOL, NO_ARG, 0, 0,
   0, 0, 0, 0},
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#ifdef HAVE_SMEM
  {"shared-memory", OPT_ENABLE_SHARED_MEMORY,
   "Enable the shared memory.",(gptr*) &opt_enable_shared_memory, (gptr*) &opt_enable_shared_memory,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
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#endif
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  {"exit-info", 'T', "Used for debugging;  Use at your own risk!", 0, 0, 0,
   GET_LONG, OPT_ARG, 0, 0, 0, 0, 0, 0},
3776
  {"flush", OPT_FLUSH, "Flush tables to disk between SQL commands.", 0, 0, 0,
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   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
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  { "group_concat_max_len", OPT_GROUP_CONCAT_MAX_LEN,
    "The maximum length of the result of function  group_concat.",
3780
    (gptr*) &global_system_variables.group_concat_max_len,
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    (gptr*) &max_system_variables.group_concat_max_len, 0, GET_ULONG,
    REQUIRED_ARG, 1024, 4, (long) ~0, 0, 1, 0},
3783 3784
  /* We must always support the next option to make scripts like mysqltest
     easier to do */
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  {"gdb", OPT_DEBUGGING,
   "Set up signals usable for debugging",
   (gptr*) &opt_debugging, (gptr*) &opt_debugging,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
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  {"init-rpl-role", OPT_INIT_RPL_ROLE, "Set the replication role.", 0, 0, 0,
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   GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"innodb_data_file_path", OPT_INNODB_DATA_FILE_PATH,
3792
   "Path to individual files and their sizes.",
3793
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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#ifdef HAVE_INNOBASE_DB
3795
  {"innodb_data_home_dir", OPT_INNODB_DATA_HOME_DIR,
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   "The common part for Innodb table spaces.", (gptr*) &innobase_data_home_dir,
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   (gptr*) &innobase_data_home_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0,
   0},
  {"innodb_log_group_home_dir", OPT_INNODB_LOG_GROUP_HOME_DIR,
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   "Path to innodb log files.", (gptr*) &innobase_log_group_home_dir,
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   (gptr*) &innobase_log_group_home_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0,
   0, 0},
  {"innodb_log_arch_dir", OPT_INNODB_LOG_ARCH_DIR,
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   "Where full logs should be archived.", (gptr*) &innobase_log_arch_dir,
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   (gptr*) &innobase_log_arch_dir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"innodb_log_archive", OPT_INNODB_LOG_ARCHIVE,
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   "Set to 1 if you want to have logs archived.", 0, 0, 0, GET_LONG, OPT_ARG,
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   0, 0, 0, 0, 0, 0},
  {"innodb_flush_log_at_trx_commit", OPT_INNODB_FLUSH_LOG_AT_TRX_COMMIT,
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   "Set to 0 (write and flush once per second), 1 (write and flush at each commit) or 2 (write at commit, flush once per second).",
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   (gptr*) &innobase_flush_log_at_trx_commit,
   (gptr*) &innobase_flush_log_at_trx_commit,
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   0, GET_UINT, OPT_ARG,  1, 0, 2, 0, 0, 0},
3814
  {"innodb_flush_method", OPT_INNODB_FLUSH_METHOD,
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   "With which method to flush data.", (gptr*) &innobase_unix_file_flush_method,
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   (gptr*) &innobase_unix_file_flush_method, 0, GET_STR, REQUIRED_ARG, 0, 0, 0,
   0, 0, 0},
  {"innodb_fast_shutdown", OPT_INNODB_FAST_SHUTDOWN,
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   "Speeds up server shutdown process.", (gptr*) &innobase_fast_shutdown,
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   (gptr*) &innobase_fast_shutdown, 0, GET_BOOL, OPT_ARG, 1, 0, 0, 0, 0, 0},
3821
  {"innodb_max_dirty_pages_pct", OPT_INNODB_MAX_DIRTY_PAGES_PCT,
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   "Percentage of dirty pages allowed in bufferpool.", (gptr*) &srv_max_buf_pool_modified_pct,
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   (gptr*) &srv_max_buf_pool_modified_pct, 0, GET_ULONG, REQUIRED_ARG, 90, 0, 100, 0, 0, 0},
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  {"innodb_file_per_table", OPT_INNODB_FILE_PER_TABLE,
   "Stores each InnoDB table to an .ibd file in the database dir.",
   (gptr*) &innobase_file_per_table,
   (gptr*) &innobase_file_per_table, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
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#endif /* End HAVE_INNOBASE_DB */
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  {"help", '?', "Display this help and exit.", 
   (gptr*) &opt_help, (gptr*) &opt_help, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
   0, 0},
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  {"verbose", 'v', "Used with --help option for detailed help",
   (gptr*) &opt_verbose, (gptr*) &opt_verbose, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
   0, 0},
3835
  {"init-file", OPT_INIT_FILE, "Read SQL commands from this file at startup.",
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   (gptr*) &opt_init_file, (gptr*) &opt_init_file, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
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  {"log", 'l', "Log connections and queries to file.", (gptr*) &opt_logname,
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   (gptr*) &opt_logname, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"language", 'L',
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   "Client error messages in given language. May be given as a full path.",
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   (gptr*) &language_ptr, (gptr*) &language_ptr, 0, GET_STR, REQUIRED_ARG,
   0, 0, 0, 0, 0, 0},
  {"local-infile", OPT_LOCAL_INFILE,
3845
   "Enable/disable LOAD DATA LOCAL INFILE (takes values 1|0).",
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   (gptr*) &opt_local_infile,
   (gptr*) &opt_local_infile, 0, GET_BOOL, OPT_ARG,
3848
   1, 0, 0, 0, 0, 0},
3849
  {"log-bin", OPT_BIN_LOG,
3850
   "Log update queries in binary format.",
3851
   (gptr*) &opt_bin_logname, (gptr*) &opt_bin_logname, 0, GET_STR_ALLOC,
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   OPT_ARG, 0, 0, 0, 0, 0, 0},
3853
  {"log-bin-index", OPT_BIN_LOG_INDEX,
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   "File that holds the names for last binary log files.",
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   (gptr*) &opt_binlog_index_name, (gptr*) &opt_binlog_index_name, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"log-isam", OPT_ISAM_LOG, "Log all MyISAM changes to file.",
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   (gptr*) &myisam_log_filename, (gptr*) &myisam_log_filename, 0, GET_STR,
   OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"log-update", OPT_UPDATE_LOG,
   "Log updates to file.# where # is a unique number if not given.",
   (gptr*) &opt_update_logname, (gptr*) &opt_update_logname, 0, GET_STR,
   OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"log-slow-queries", OPT_SLOW_QUERY_LOG,
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   "Log slow queries to this log file. Defaults logging to hostname-slow.log file.",
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   (gptr*) &opt_slow_logname, (gptr*) &opt_slow_logname, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
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  {"log-long-format", '0',
   "Log some extra information to update log. Please note that this option is deprecated; see --log-short-format option.", 
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"log-short-format", OPT_SHORT_LOG_FORMAT,
   "Don't log extra information to update and slow-query logs.",
   (gptr*) &opt_short_log_format, (gptr*) &opt_short_log_format,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"log-queries-not-using-indexes", OPT_LOG_QUERIES_NOT_USING_INDEXES,
   "Log queries that are executed without benefit of any index.",
   (gptr*) &opt_log_queries_not_using_indexes, (gptr*) &opt_log_queries_not_using_indexes,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
3879
  {"log-slave-updates", OPT_LOG_SLAVE_UPDATES,
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   "Tells the slave to log the updates from the slave thread to the binary log. You will need to turn it on if you plan to daisy-chain the slaves.",
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   (gptr*) &opt_log_slave_updates, (gptr*) &opt_log_slave_updates, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"low-priority-updates", OPT_LOW_PRIORITY_UPDATES,
3884
   "INSERT/DELETE/UPDATE has lower priority than selects.",
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   (gptr*) &global_system_variables.low_priority_updates,
   (gptr*) &max_system_variables.low_priority_updates,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
3888
  {"master-host", OPT_MASTER_HOST,
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   "Master hostname or IP address for replication. If not set, the slave thread will not be started. Note that the setting of master-host will be ignored if there exists a valid master.info file.",
   (gptr*) &master_host, (gptr*) &master_host, 0, GET_STR, REQUIRED_ARG, 0, 0,
   0, 0, 0, 0},
  {"master-user", OPT_MASTER_USER,
   "The username the slave thread will use for authentication when connecting to the master. The user must have FILE privilege. If the master user is not set, user test is assumed. The value in master.info will take precedence if it can be read.",
   (gptr*) &master_user, (gptr*) &master_user, 0, GET_STR, REQUIRED_ARG, 0, 0,
   0, 0, 0, 0},
  {"master-password", OPT_MASTER_PASSWORD,
   "The password the slave thread will authenticate with when connecting to the master. If not set, an empty password is assumed.The value in master.info will take precedence if it can be read.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"master-port", OPT_MASTER_PORT,
3900
   "The port the master is listening on. If not set, the compiled setting of MYSQL_PORT is assumed. If you have not tinkered with configure options, this should be 3306. The value in master.info will take precedence if it can be read.",
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   (gptr*) &master_port, (gptr*) &master_port, 0, GET_UINT, REQUIRED_ARG,
   MYSQL_PORT, 0, 0, 0, 0, 0},
  {"master-connect-retry", OPT_MASTER_CONNECT_RETRY,
   "The number of seconds the slave thread will sleep before retrying to connect to the master in case the master goes down or the connection is lost.",
   (gptr*) &master_connect_retry, (gptr*) &master_connect_retry, 0, GET_UINT,
   REQUIRED_ARG, 60, 0, 0, 0, 0, 0},
  {"master-retry-count", OPT_MASTER_RETRY_COUNT,
   "The number of tries the slave will make to connect to the master before giving up.",
   (gptr*) &master_retry_count, (gptr*) &master_retry_count, 0, GET_ULONG,
3910
   REQUIRED_ARG, 3600*24, 0, 0, 0, 0, 0},
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  {"master-info-file", OPT_MASTER_INFO_FILE,
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   "The location and name of the file that remembers the master and where the I/O replication \
thread is in the master's binlogs.",
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   (gptr*) &master_info_file, (gptr*) &master_info_file, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"master-ssl", OPT_MASTER_SSL,
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   "Enable the slave to connect to the master using SSL.",
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   (gptr*) &master_ssl, (gptr*) &master_ssl, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0,
   0, 0},
  {"master-ssl-key", OPT_MASTER_SSL_KEY,
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   "Master SSL keyfile name. Only applies if you have enabled master-ssl.",
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   (gptr*) &master_ssl_key, (gptr*) &master_ssl_key, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
  {"master-ssl-cert", OPT_MASTER_SSL_CERT,
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   "Master SSL certificate file name. Only applies if you have enabled \
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master-ssl",
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   (gptr*) &master_ssl_cert, (gptr*) &master_ssl_cert, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
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  {"master-ssl-ca", OPT_MASTER_SSL_CA,
   "Master SSL CA file. Only applies if you have enabled master-ssl.",
   (gptr*) &master_ssl_ca, (gptr*) &master_ssl_ca, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
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  {"master-ssl-capath", OPT_MASTER_SSL_CAPATH,
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   "Master SSL CA path. Only applies if you have enabled master-ssl.",
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   (gptr*) &master_ssl_capath, (gptr*) &master_ssl_capath, 0, GET_STR, OPT_ARG,
   0, 0, 0, 0, 0, 0},
  {"master-ssl-cipher", OPT_MASTER_SSL_CIPHER,
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   "Master SSL cipher. Only applies if you have enabled master-ssl.",
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   (gptr*) &master_ssl_cipher, (gptr*) &master_ssl_capath, 0, GET_STR, OPT_ARG,
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   0, 0, 0, 0, 0, 0},
  {"myisam-recover", OPT_MYISAM_RECOVER,
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   "Syntax: myisam-recover[=option[,option...]], where option can be DEFAULT, BACKUP, FORCE or QUICK.",
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   (gptr*) &myisam_recover_options_str, (gptr*) &myisam_recover_options_str, 0,
   GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
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  {"memlock", OPT_MEMLOCK, "Lock mysqld in memory.", (gptr*) &locked_in_memory,
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   (gptr*) &locked_in_memory, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
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#ifdef HAVE_REPLICATION
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  {"disconnect-slave-event-count", OPT_DISCONNECT_SLAVE_EVENT_COUNT,
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   "Option used by mysql-test for debugging and testing of replication.",
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   (gptr*) &disconnect_slave_event_count,
   (gptr*) &disconnect_slave_event_count, 0, GET_INT, REQUIRED_ARG, 0, 0, 0,
   0, 0, 0},
  {"abort-slave-event-count", OPT_ABORT_SLAVE_EVENT_COUNT,
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   "Option used by mysql-test for debugging and testing of replication.",
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   (gptr*) &abort_slave_event_count,  (gptr*) &abort_slave_event_count,
   0, GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"max-binlog-dump-events", OPT_MAX_BINLOG_DUMP_EVENTS,
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   "Option used by mysql-test for debugging and testing of replication.",
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   (gptr*) &max_binlog_dump_events, (gptr*) &max_binlog_dump_events, 0,
   GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"sporadic-binlog-dump-fail", OPT_SPORADIC_BINLOG_DUMP_FAIL,
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   "Option used by mysql-test for debugging and testing of replication.",
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   (gptr*) &opt_sporadic_binlog_dump_fail,
   (gptr*) &opt_sporadic_binlog_dump_fail, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
   0},
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#endif /* HAVE_REPLICATION */
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  {"safemalloc-mem-limit", OPT_SAFEMALLOC_MEM_LIMIT,
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   "Simulate memory shortage when compiled with the --with-debug=full option.",
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   0, 0, 0, GET_ULL, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"new", 'n', "Use very new possible 'unsafe' functions.",
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   (gptr*) &global_system_variables.new_mode,
   (gptr*) &max_system_variables.new_mode,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
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#ifdef NOT_YET
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  {"no-mix-table-types", OPT_NO_MIX_TYPE, "Don't allow commands with uses two different table types.",
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   (gptr*) &opt_no_mix_types, (gptr*) &opt_no_mix_types, 0, GET_BOOL, NO_ARG,
   0, 0, 0, 0, 0, 0},
#endif
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  {"old-passwords", OPT_OLD_PASSWORDS, "Use old password encryption method (needed for 4.0 and older clients).",
   (gptr*) &global_system_variables.old_passwords,
   (gptr*) &max_system_variables.old_passwords, 0, GET_BOOL, NO_ARG,
   0, 0, 0, 0, 0, 0},
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  {"old-rpl-compat", OPT_OLD_RPL_COMPAT,
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   "Use old LOAD DATA format in the binary log (don't save data in file).",
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   (gptr*) &opt_old_rpl_compat, (gptr*) &opt_old_rpl_compat, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
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#ifdef ONE_THREAD
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  {"one-thread", OPT_ONE_THREAD,
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   "Only use one thread (for debugging under Linux).", 0, 0, 0, GET_NO_ARG,
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   NO_ARG, 0, 0, 0, 0, 0, 0},
#endif
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  {"pid-file", OPT_PID_FILE, "Pid file used by safe_mysqld.",
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   (gptr*) &pidfile_name_ptr, (gptr*) &pidfile_name_ptr, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"log-error", OPT_ERROR_LOG_FILE, "Log error file.",
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   (gptr*) &log_error_file_ptr, (gptr*) &log_error_file_ptr, 0, GET_STR,
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   OPT_ARG, 0, 0, 0, 0, 0, 0},
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  {"port", 'P', "Port number to use for connection.", (gptr*) &mysqld_port,
   (gptr*) &mysqld_port, 0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"replicate-do-db", OPT_REPLICATE_DO_DB,
   "Tells the slave thread to restrict replication to the specified database. To specify more than one database, use the directive multiple times, once for each database. Note that this will only work if you do not use cross-database queries such as UPDATE some_db.some_table SET foo='bar' while having selected a different or no database. If you need cross database updates to work, make sure you have 3.23.28 or later, and use replicate-wild-do-table=db_name.%.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-do-table", OPT_REPLICATE_DO_TABLE,
   "Tells the slave thread to restrict replication to the specified table. To specify more than one table, use the directive multiple times, once for each table. This will work for cross-database updates, in contrast to replicate-do-db.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-wild-do-table", OPT_REPLICATE_WILD_DO_TABLE,
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   "Tells the slave thread to restrict replication to the tables that match the specified wildcard pattern. To specify more than one table, use the directive multiple times, once for each table. This will work for cross-database updates. Example: replicate-wild-do-table=foo%.bar% will replicate only updates to tables in all databases that start with foo and whose table names start with bar.",
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   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-ignore-db", OPT_REPLICATE_IGNORE_DB,
   "Tells the slave thread to not replicate to the specified database. To specify more than one database to ignore, use the directive multiple times, once for each database. This option will not work if you use cross database updates. If you need cross database updates to work, make sure you have 3.23.28 or later, and use replicate-wild-ignore-table=db_name.%. ",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-ignore-table", OPT_REPLICATE_IGNORE_TABLE,
   "Tells the slave thread to not replicate to the specified table. To specify more than one table to ignore, use the directive multiple times, once for each table. This will work for cross-datbase updates, in contrast to replicate-ignore-db.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-wild-ignore-table", OPT_REPLICATE_WILD_IGNORE_TABLE,
   "Tells the slave thread to not replicate to the tables that match the given wildcard pattern. To specify more than one table to ignore, use the directive multiple times, once for each table. This will work for cross-database updates. Example: replicate-wild-ignore-table=foo%.bar% will not do updates to tables in databases that start with foo and whose table names start with bar.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"replicate-rewrite-db", OPT_REPLICATE_REWRITE_DB,
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   "Updates to a database with a different name than the original. Example: replicate-rewrite-db=master_db_name->slave_db_name.",
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   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  // In replication, we may need to tell the other servers how to connect
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  {"report-host", OPT_REPORT_HOST,
   "Hostname or IP of the slave to be reported to to the master during slave registration. Will appear in the output of SHOW SLAVE HOSTS. Leave unset if you do not want the slave to register itself with the master. Note that it is not sufficient for the master to simply read the IP of the slave off the socket once the slave connects. Due to NAT and other routing issues, that IP may not be valid for connecting to the slave from the master or other hosts.",
   (gptr*) &report_host, (gptr*) &report_host, 0, GET_STR, REQUIRED_ARG, 0, 0,
   0, 0, 0, 0},
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  {"report-user", OPT_REPORT_USER, "Undocumented.", (gptr*) &report_user,
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   (gptr*) &report_user, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"report-password", OPT_REPORT_PASSWORD, "Undocumented.",
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   (gptr*) &report_password, (gptr*) &report_password, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"report-port", OPT_REPORT_PORT,
   "Port for connecting to slave reported to the master during slave registration. Set it only if the slave is listening on a non-default port or if you have a special tunnel from the master or other clients to the slave. If not sure, leave this option unset.",
   (gptr*) &report_port, (gptr*) &report_port, 0, GET_UINT, REQUIRED_ARG,
   MYSQL_PORT, 0, 0, 0, 0, 0},
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  {"rpl-recovery-rank", OPT_RPL_RECOVERY_RANK, "Undocumented.",
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   (gptr*) &rpl_recovery_rank, (gptr*) &rpl_recovery_rank, 0, GET_ULONG,
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   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"relay-log", OPT_RELAY_LOG,
   "The location and name to use for relay logs.",
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   (gptr*) &opt_relay_logname, (gptr*) &opt_relay_logname, 0,
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   GET_STR_ALLOC, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {"relay-log-index", OPT_RELAY_LOG_INDEX,
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   "The location and name to use for the file that keeps a list of the last \
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relay logs.",
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   (gptr*) &opt_relaylog_index_name, (gptr*) &opt_relaylog_index_name, 0,
   GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"safe-mode", OPT_SAFE, "Skip some optimize stages (for testing).",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
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#ifndef TO_BE_DELETED
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  {"safe-show-database", OPT_SAFE_SHOW_DB,
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   "Deprecated option; One should use GRANT SHOW DATABASES instead...",
4052
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
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#endif
4054
  {"safe-user-create", OPT_SAFE_USER_CREATE,
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   "Don't allow new user creation by the user who has no write privileges to the mysql.user table.",
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   (gptr*) &opt_safe_user_create, (gptr*) &opt_safe_user_create, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
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  {"secure-auth", OPT_SECURE_AUTH, "Disallow authentication for accounts that have old (pre-4.1) passwords.",
   (gptr*) &opt_secure_auth, (gptr*) &opt_secure_auth, 0, GET_BOOL, NO_ARG,
   my_bool(0), 0, 0, 0, 0, 0},
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  {"server-id",	OPT_SERVER_ID,
4062
   "Uniquely identifies the server instance in the community of replication partners.",
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   (gptr*) &server_id, (gptr*) &server_id, 0, GET_ULONG, REQUIRED_ARG, 0, 0, 0,
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   0, 0, 0},
  {"set-variable", 'O',
   "Change the value of a variable. Please note that this option is deprecated;you can set variables directly with --variable-name=value.",
   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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#ifdef HAVE_SMEM
  {"shared_memory_base_name",OPT_SHARED_MEMORY_BASE_NAME,
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   "Base name of shared memory.", (gptr*) &shared_memory_base_name, (gptr*) &shared_memory_base_name,
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   0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif
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  {"show-slave-auth-info", OPT_SHOW_SLAVE_AUTH_INFO,
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   "Show user and password in SHOW SLAVE HOSTS.",
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   (gptr*) &opt_show_slave_auth_info, (gptr*) &opt_show_slave_auth_info, 0,
   GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"concurrent-insert", OPT_CONCURRENT_INSERT,
4078
   "Use concurrent insert with MyISAM. Disable with --skip-concurrent-insert.",
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   (gptr*) &myisam_concurrent_insert, (gptr*) &myisam_concurrent_insert,
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   0, GET_BOOL, NO_ARG, 1, 0, 0, 0, 0, 0},
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  {"skip-grant-tables", OPT_SKIP_GRANT,
   "Start without grant tables. This gives all users FULL ACCESS to all tables!",
   (gptr*) &opt_noacl, (gptr*) &opt_noacl, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0,
   0},
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  {"innodb", OPT_INNODB, "Enable InnoDB (if this version of MySQL supports it). \
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Disable with --skip-innodb (will save memory).",
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   (gptr*) &opt_innodb, (gptr*) &opt_innodb, 0, GET_BOOL, NO_ARG, 1, 0, 0,
   0, 0, 0},
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  {"isam", OPT_ISAM, "Enable isam (if this version of MySQL supports it). \
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Disable with --skip-isam.",
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   (gptr*) &opt_isam, (gptr*) &opt_isam, 0, GET_BOOL, NO_ARG, 1, 0, 0,
   0, 0, 0},
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  {"skip-locking", OPT_SKIP_LOCK,
4094
   "Deprecated option, use --skip-external-locking instead.",
4095
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
4096
  {"skip-host-cache", OPT_SKIP_HOST_CACHE, "Don't cache host names.", 0, 0, 0,
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   GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-name-resolve", OPT_SKIP_RESOLVE,
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   "Don't resolve hostnames. All hostnames are IP's or 'localhost'.",
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   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-networking", OPT_SKIP_NETWORKING,
   "Don't allow connection with TCP/IP.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0,
   0, 0, 0},
  {"skip-new", OPT_SKIP_NEW, "Don't use new, possible wrong routines.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-show-database", OPT_SKIP_SHOW_DB,
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   "Don't allow 'SHOW DATABASE' commands.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0,
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   0, 0, 0, 0},
  {"skip-slave-start", OPT_SKIP_SLAVE_START,
   "If set, slave is not autostarted.", (gptr*) &opt_skip_slave_start,
   (gptr*) &opt_skip_slave_start, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-stack-trace", OPT_SKIP_STACK_TRACE,
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   "Don't print a stack trace on failure.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0,
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   0, 0, 0, 0},
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  {"skip-symlink", OPT_SKIP_SYMLINKS, "Don't allow symlinking of tables. Deprecated option.  Use --skip-symbolic-links instead.",
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   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"skip-thread-priority", OPT_SKIP_PRIOR,
   "Don't give threads different priorities.", 0, 0, 0, GET_NO_ARG, NO_ARG, 0,
   0, 0, 0, 0, 0},
4120
  {"relay-log-info-file", OPT_RELAY_LOG_INFO_FILE,
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   "The location and name of the file that remembers where the SQL replication \
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thread is in the relay logs.",
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   (gptr*) &relay_log_info_file, (gptr*) &relay_log_info_file, 0, GET_STR,
   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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#ifdef HAVE_REPLICATION
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  {"slave-load-tmpdir", OPT_SLAVE_LOAD_TMPDIR,
4127
   "The location where the slave should put its temporary files when \
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replicating a LOAD DATA INFILE command.",
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   (gptr*) &slave_load_tmpdir, (gptr*) &slave_load_tmpdir, 0, GET_STR_ALLOC,
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   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"slave-skip-errors", OPT_SLAVE_SKIP_ERRORS,
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   "Tells the slave thread to continue replication when a query returns an error from the provided list.",
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   0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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#endif
4135
  {"socket", OPT_SOCKET, "Socket file to use for connection.",
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   (gptr*) &mysqld_unix_port, (gptr*) &mysqld_unix_port, 0, GET_STR,
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   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"sql-bin-update-same", OPT_SQL_BIN_UPDATE_SAME,
   "If set, setting SQL_LOG_BIN to a value will automatically set SQL_LOG_UPDATE to the same value and vice versa.",
   (gptr*) &opt_sql_bin_update, (gptr*) &opt_sql_bin_update, 0, GET_BOOL,
   NO_ARG, 0, 0, 0, 0, 0, 0},
  {"sql-mode", OPT_SQL_MODE,
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   "Syntax: sql-mode=option[,option[,option...]] where option can be one of: REAL_AS_FLOAT, PIPES_AS_CONCAT, ANSI_QUOTES, IGNORE_SPACE, ONLY_FULL_GROUP_BY, NO_UNSIGNED_SUBTRACTION.",
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   (gptr*) &sql_mode_str, (gptr*) &sql_mode_str, 0, GET_STR, REQUIRED_ARG, 0,
   0, 0, 0, 0, 0},
4146
#ifdef HAVE_OPENSSL
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#include "sslopt-longopts.h"
#endif
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  {"temp-pool", OPT_TEMP_POOL,
4150
   "Using this option will cause most temporary files created to use a small set of names, rather than a unique name for each new file.",
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   (gptr*) &use_temp_pool, (gptr*) &use_temp_pool, 0, GET_BOOL, NO_ARG, 1,
   0, 0, 0, 0, 0},
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  {"tmpdir", 't',
   "Path for temporary files. Several paths may be specified, separated by a "
#if defined( __WIN__) || defined(OS2)
   "semicolon (;)"
#else
   "colon (:)"
#endif
   ", in this case they are used in a round-robin fashion.",
   (gptr*) &opt_mysql_tmpdir,
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   (gptr*) &opt_mysql_tmpdir, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
4163
  {"transaction-isolation", OPT_TX_ISOLATION,
4164
   "Default transaction isolation level.", 0, 0, 0, GET_STR, REQUIRED_ARG, 0,
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   0, 0, 0, 0, 0},
4166
  {"external-locking", OPT_USE_LOCKING, "Use system (external) locking.  With this option enabled you can run myisamchk to test (not repair) tables while the MySQL server is running.",
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   (gptr*) &opt_external_locking, (gptr*) &opt_external_locking,
   0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
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  {"use-symbolic-links", 's', "Enable symbolic link support. Deprecated option; Use --symbolic-links instead.",
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   (gptr*) &my_use_symdir, (gptr*) &my_use_symdir, 0, GET_BOOL, NO_ARG,
   IF_PURIFY(0,1), 0, 0, 0, 0, 0},
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  {"symbolic-links", 's', "Enable symbolic link support.",
4173
   (gptr*) &my_use_symdir, (gptr*) &my_use_symdir, 0, GET_BOOL, NO_ARG,
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   IF_PURIFY(0,1), 0, 0, 0, 0, 0},
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  {"user", 'u', "Run mysqld daemon as user.", 0, 0, 0, GET_STR, REQUIRED_ARG,
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   0, 0, 0, 0, 0, 0},
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  {"version", 'V', "Output version information and exit.", 0, 0, 0, GET_NO_ARG,
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   NO_ARG, 0, 0, 0, 0, 0, 0},
4179
  {"log-warnings", 'W', "Log some not critical warnings to the log file.",
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   (gptr*) &global_system_variables.log_warnings,
   (gptr*) &max_system_variables.log_warnings, 0, GET_BOOL, NO_ARG, 0, 0, 0,
   0, 0, 0},
4183
  {"warnings", 'W', "Deprecated ; Use --log-warnings instead.",
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   (gptr*) &global_system_variables.log_warnings,
   (gptr*) &max_system_variables.log_warnings, 0, GET_BOOL, NO_ARG, 0, 0, 0,
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   0, 0, 0},
  { "back_log", OPT_BACK_LOG,
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    "The number of outstanding connection requests MySQL can have. This comes into play when the main MySQL thread gets very many connection requests in a very short time.",
    (gptr*) &back_log, (gptr*) &back_log, 0, GET_ULONG,
4190
    REQUIRED_ARG, 50, 1, 65535, 0, 1, 0 },
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#ifdef HAVE_BERKELEY_DB
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  { "bdb_cache_size", OPT_BDB_CACHE_SIZE,
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    "The buffer that is allocated to cache index and rows for BDB tables.",
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    (gptr*) &berkeley_cache_size, (gptr*) &berkeley_cache_size, 0, GET_ULONG,
    REQUIRED_ARG, KEY_CACHE_SIZE, 20*1024, (long) ~0, 0, IO_SIZE, 0},
  {"bdb_log_buffer_size", OPT_BDB_LOG_BUFFER_SIZE,
   "The buffer that is allocated to cache index and rows for BDB tables.",
   (gptr*) &berkeley_log_buffer_size, (gptr*) &berkeley_log_buffer_size, 0,
   GET_ULONG, REQUIRED_ARG, 0, 256*1024L, ~0L, 0, 1024, 0},
  {"bdb_max_lock", OPT_BDB_MAX_LOCK,
   "The maximum number of locks you can have active on a BDB table.",
   (gptr*) &berkeley_max_lock, (gptr*) &berkeley_max_lock, 0, GET_ULONG,
   REQUIRED_ARG, 10000, 0, (long) ~0, 0, 1, 0},
  /* QQ: The following should be removed soon! */
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  {"bdb_lock_max", OPT_BDB_MAX_LOCK, "Synonym for bdb_max_lock.",
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   (gptr*) &berkeley_max_lock, (gptr*) &berkeley_max_lock, 0, GET_ULONG,
   REQUIRED_ARG, 10000, 0, (long) ~0, 0, 1, 0},
#endif /* HAVE_BERKELEY_DB */
  {"binlog_cache_size", OPT_BINLOG_CACHE_SIZE,
   "The size of the cache to hold the SQL statements for the binary log during a transaction. If you often use big, multi-statement transactions you can increase this to get more performance.",
   (gptr*) &binlog_cache_size, (gptr*) &binlog_cache_size, 0, GET_ULONG,
   REQUIRED_ARG, 32*1024L, IO_SIZE, ~0L, 0, IO_SIZE, 0},
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  {"connect_timeout", OPT_CONNECT_TIMEOUT,
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   "The number of seconds the mysqld server is waiting for a connect packet before responding with 'Bad handshake'.",
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    (gptr*) &connect_timeout, (gptr*) &connect_timeout,
   0, GET_ULONG, REQUIRED_ARG, CONNECT_TIMEOUT, 2, LONG_TIMEOUT, 0, 1, 0 },
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  {"delayed_insert_timeout", OPT_DELAYED_INSERT_TIMEOUT,
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   "How long a INSERT DELAYED thread should wait for INSERT statements before terminating.",
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   (gptr*) &delayed_insert_timeout, (gptr*) &delayed_insert_timeout, 0,
   GET_ULONG, REQUIRED_ARG, DELAYED_WAIT_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
  {"delayed_insert_limit", OPT_DELAYED_INSERT_LIMIT,
   "After inserting delayed_insert_limit rows, the INSERT DELAYED handler will check if there are any SELECT statements pending. If so, it allows these to execute before continuing.",
    (gptr*) &delayed_insert_limit, (gptr*) &delayed_insert_limit, 0, GET_ULONG,
    REQUIRED_ARG, DELAYED_LIMIT, 1, ~0L, 0, 1, 0},
  { "delayed_queue_size", OPT_DELAYED_QUEUE_SIZE,
    "What size queue (in rows) should be allocated for handling INSERT DELAYED. If the queue becomes full, any client that does INSERT DELAYED will wait until there is room in the queue again.",
    (gptr*) &delayed_queue_size, (gptr*) &delayed_queue_size, 0, GET_ULONG,
    REQUIRED_ARG, DELAYED_QUEUE_SIZE, 1, ~0L, 0, 1, 0},
  { "flush_time", OPT_FLUSH_TIME,
    "A dedicated thread is created to flush all tables at the given interval.",
    (gptr*) &flush_time, (gptr*) &flush_time, 0, GET_ULONG, REQUIRED_ARG,
    FLUSH_TIME, 0, LONG_TIMEOUT, 0, 1, 0},
  { "ft_min_word_len", OPT_FT_MIN_WORD_LEN,
    "The minimum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable.",
    (gptr*) &ft_min_word_len, (gptr*) &ft_min_word_len, 0, GET_ULONG,
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    REQUIRED_ARG, 4, 1, HA_FT_MAXLEN, 0, 1, 0},
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  { "ft_max_word_len", OPT_FT_MAX_WORD_LEN,
    "The maximum length of the word to be included in a FULLTEXT index. Note: FULLTEXT indexes must be rebuilt after changing this variable.",
    (gptr*) &ft_max_word_len, (gptr*) &ft_max_word_len, 0, GET_ULONG,
    REQUIRED_ARG, HA_FT_MAXLEN, 10, HA_FT_MAXLEN, 0, 1, 0},
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  { "ft_query_expansion_limit", OPT_FT_QUERY_EXPANSION_LIMIT,
    "Number of best matches to use for query expansion",
    (gptr*) &ft_query_expansion_limit, (gptr*) &ft_query_expansion_limit, 0, GET_ULONG,
    REQUIRED_ARG, 20, 0, 1000, 0, 1, 0},
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  { "ft_stopword_file", OPT_FT_STOPWORD_FILE,
    "Use stopwords from this file instead of built-in list.",
    (gptr*) &ft_stopword_file, (gptr*) &ft_stopword_file, 0, GET_STR,
    REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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#ifdef HAVE_INNOBASE_DB
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  {"innodb_mirrored_log_groups", OPT_INNODB_MIRRORED_LOG_GROUPS,
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   "Number of identical copies of log groups we keep for the database. Currently this should be set to 1.",
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   (gptr*) &innobase_mirrored_log_groups,
   (gptr*) &innobase_mirrored_log_groups, 0, GET_LONG, REQUIRED_ARG, 1, 1, 10,
   0, 1, 0},
  {"innodb_log_files_in_group", OPT_INNODB_LOG_FILES_IN_GROUP,
   "Number of log files in the log group. InnoDB writes to the files in a circular fashion. Value 3 is recommended here.",
   (gptr*) &innobase_log_files_in_group, (gptr*) &innobase_log_files_in_group,
   0, GET_LONG, REQUIRED_ARG, 2, 2, 100, 0, 1, 0},
  {"innodb_log_file_size", OPT_INNODB_LOG_FILE_SIZE,
   "Size of each log file in a log group in megabytes.",
   (gptr*) &innobase_log_file_size, (gptr*) &innobase_log_file_size, 0,
   GET_LONG, REQUIRED_ARG, 5*1024*1024L, 1*1024*1024L, ~0L, 0, 1024*1024L, 0},
  {"innodb_log_buffer_size", OPT_INNODB_LOG_BUFFER_SIZE,
   "The size of the buffer which InnoDB uses to write log to the log files on disk.",
   (gptr*) &innobase_log_buffer_size, (gptr*) &innobase_log_buffer_size, 0,
   GET_LONG, REQUIRED_ARG, 1024*1024L, 256*1024L, ~0L, 0, 1024, 0},
  {"innodb_buffer_pool_size", OPT_INNODB_BUFFER_POOL_SIZE,
   "The size of the memory buffer InnoDB uses to cache data and indexes of its tables.",
   (gptr*) &innobase_buffer_pool_size, (gptr*) &innobase_buffer_pool_size, 0,
   GET_LONG, REQUIRED_ARG, 8*1024*1024L, 1024*1024L, ~0L, 0, 1024*1024L, 0},
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  {"innodb_buffer_pool_awe_mem_mb", OPT_INNODB_BUFFER_POOL_AWE_MEM_MB,
   "If Windows AWE is used, the size of InnoDB buffer pool allocated from the AWE memory.",
   (gptr*) &innobase_buffer_pool_awe_mem_mb, (gptr*) &innobase_buffer_pool_awe_mem_mb, 0,
   GET_LONG, REQUIRED_ARG, 0, 0, 63000, 0, 1, 0},
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  {"innodb_additional_mem_pool_size", OPT_INNODB_ADDITIONAL_MEM_POOL_SIZE,
   "Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures.",
   (gptr*) &innobase_additional_mem_pool_size,
   (gptr*) &innobase_additional_mem_pool_size, 0, GET_LONG, REQUIRED_ARG,
   1*1024*1024L, 512*1024L, ~0L, 0, 1024, 0},
  {"innodb_file_io_threads", OPT_INNODB_FILE_IO_THREADS,
   "Number of file I/O threads in InnoDB.", (gptr*) &innobase_file_io_threads,
   (gptr*) &innobase_file_io_threads, 0, GET_LONG, REQUIRED_ARG, 4, 4, 64, 0,
   1, 0},
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  {"innodb_open_files", OPT_INNODB_OPEN_FILES,
   "How many files at the maximum InnoDB keeps open at the same time.",
   (gptr*) &innobase_open_files, (gptr*) &innobase_open_files, 0,
   GET_LONG, REQUIRED_ARG, 300L, 10L, ~0L, 0, 1L, 0},
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  {"innodb_lock_wait_timeout", OPT_INNODB_LOCK_WAIT_TIMEOUT,
   "Timeout in seconds an InnoDB transaction may wait for a lock before being rolled back.",
   (gptr*) &innobase_lock_wait_timeout, (gptr*) &innobase_lock_wait_timeout,
   0, GET_LONG, REQUIRED_ARG, 50, 1, 1024 * 1024 * 1024, 0, 1, 0},
  {"innodb_thread_concurrency", OPT_INNODB_THREAD_CONCURRENCY,
   "Helps in performance tuning in heavily concurrent environments.",
   (gptr*) &innobase_thread_concurrency, (gptr*) &innobase_thread_concurrency,
   0, GET_LONG, REQUIRED_ARG, 8, 1, 1000, 0, 1, 0},
  {"innodb_force_recovery", OPT_INNODB_FORCE_RECOVERY,
   "Helps to save your data in case the disk image of the database becomes corrupt.",
   (gptr*) &innobase_force_recovery, (gptr*) &innobase_force_recovery, 0,
   GET_LONG, REQUIRED_ARG, 0, 0, 6, 0, 1, 0},
#endif /* HAVE_INNOBASE_DB */
  {"interactive_timeout", OPT_INTERACTIVE_TIMEOUT,
   "The number of seconds the server waits for activity on an interactive connection before closing it.",
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   (gptr*) &global_system_variables.net_interactive_timeout,
   (gptr*) &max_system_variables.net_interactive_timeout, 0,
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   GET_ULONG, REQUIRED_ARG, NET_WAIT_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
  {"join_buffer_size", OPT_JOIN_BUFF_SIZE,
   "The size of the buffer that is used for full joins.",
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   (gptr*) &global_system_variables.join_buff_size,
   (gptr*) &max_system_variables.join_buff_size, 0, GET_ULONG,
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   REQUIRED_ARG, 128*1024L, IO_SIZE*2+MALLOC_OVERHEAD, ~0L, MALLOC_OVERHEAD,
   IO_SIZE, 0},
  {"key_buffer_size", OPT_KEY_BUFFER_SIZE,
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   "The size of the buffer used for index blocks for MyISAM tables. Increase this to get better index handling (for all reads and multiple writes) to as much as you can afford; 64M on a 256M machine that mainly runs MySQL is quite common.",
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   (gptr*) &dflt_key_cache_var.buff_size,
   (gptr*) &dflt_key_cache_var.buff_size, 0,
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   (enum get_opt_var_type) (GET_ULL | GET_ASK_ADDR),
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   REQUIRED_ARG, KEY_CACHE_SIZE, MALLOC_OVERHEAD, (long) ~0, MALLOC_OVERHEAD,
   IO_SIZE, 0},
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  {"key_cache_block_size", OPT_KEY_CACHE_BLOCK_SIZE,
   "The default size of key cache blocks",
   (gptr*) &dflt_key_cache_var.block_size,
   (gptr*) &dflt_key_cache_var.block_size, 0, GET_ULONG,
   REQUIRED_ARG, KEY_CACHE_BLOCK_SIZE , 512, 1024*16, MALLOC_OVERHEAD, 512, 0},
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  {"key_cache_division_limit", OPT_KEY_CACHE_DIVISION_LIMIT,
   "The minimum percentage of warm blocks in key cache",
   (gptr*) &dflt_key_cache_var.division_limit,
   (gptr*) &dflt_key_cache_var.division_limit, 0, GET_ULONG,
   REQUIRED_ARG, 100, 1, 100, 0, 1, 0},
  {"key_cache_division_age_threshold", OPT_KEY_CACHE_AGE_THRESHOLD,
   "This characterizes the number of hits a hot block has to be untouched until it is considered aged enough to be downgraded to a warm block. This specifies the percentage ratio of that number of hits to the total number of blocks in key cache",
   (gptr*) &dflt_key_cache_var.age_threshold,
   (gptr*) &dflt_key_cache_var.age_threshold, 0, GET_ULONG,
   REQUIRED_ARG, 300, 100, ~0L, 0, 100, 0},
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  {"long_query_time", OPT_LONG_QUERY_TIME,
   "Log all queries that have taken more than long_query_time seconds to execute to file.",
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   (gptr*) &global_system_variables.long_query_time,
   (gptr*) &max_system_variables.long_query_time, 0, GET_ULONG,
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   REQUIRED_ARG, 10, 1, LONG_TIMEOUT, 0, 1, 0},
  {"lower_case_table_names", OPT_LOWER_CASE_TABLE_NAMES,
   "If set to 1 table names are stored in lowercase on disk and table names will be case-insensitive.",
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   (gptr*) &lower_case_table_names,
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   (gptr*) &lower_case_table_names, 0, GET_BOOL, NO_ARG,
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#ifdef FN_NO_CASE_SENCE
    1
#else
    0
#endif
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   , 0, 1, 0, 1, 0},
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  {"max_allowed_packet", OPT_MAX_ALLOWED_PACKET,
   "Max packetlength to send/receive from to server.",
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   (gptr*) &global_system_variables.max_allowed_packet,
   (gptr*) &max_system_variables.max_allowed_packet, 0, GET_ULONG,
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   REQUIRED_ARG, 1024*1024L, 1024, 1024L*1024L*1024L, MALLOC_OVERHEAD, 1024, 0},
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  {"max_binlog_cache_size", OPT_MAX_BINLOG_CACHE_SIZE,
   "Can be used to restrict the total size used to cache a multi-transaction query.",
   (gptr*) &max_binlog_cache_size, (gptr*) &max_binlog_cache_size, 0,
   GET_ULONG, REQUIRED_ARG, ~0L, IO_SIZE, ~0L, 0, IO_SIZE, 0},
  {"max_binlog_size", OPT_MAX_BINLOG_SIZE,
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   "Binary log will be rotated automatically when the size exceeds this \
value. Will also apply to relay logs if max_relay_log_size is 0. \
The minimum value for this variable is 4096.",
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   (gptr*) &max_binlog_size, (gptr*) &max_binlog_size, 0, GET_ULONG,
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   REQUIRED_ARG, 1024*1024L*1024L, IO_SIZE, 1024*1024L*1024L, 0, IO_SIZE, 0},
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  {"max_connections", OPT_MAX_CONNECTIONS,
   "The number of simultaneous clients allowed.", (gptr*) &max_connections,
   (gptr*) &max_connections, 0, GET_ULONG, REQUIRED_ARG, 100, 1, 16384, 0, 1,
   0},
  {"max_connect_errors", OPT_MAX_CONNECT_ERRORS,
   "If there is more than this number of interrupted connections from a host this host will be blocked from further connections.",
   (gptr*) &max_connect_errors, (gptr*) &max_connect_errors, 0, GET_ULONG,
    REQUIRED_ARG, MAX_CONNECT_ERRORS, 1, ~0L, 0, 1, 0},
  {"max_delayed_threads", OPT_MAX_DELAYED_THREADS,
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   "Don't start more than this number of threads to handle INSERT DELAYED statements. If set to zero, which means INSERT DELAYED is not used.",
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   (gptr*) &max_insert_delayed_threads, (gptr*) &max_insert_delayed_threads,
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   0, GET_ULONG, REQUIRED_ARG, 20, 0, 16384, 0, 1, 0},
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  {"max_error_count", OPT_MAX_ERROR_COUNT,
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   "Max number of errors/warnings to store for a statement.",
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   (gptr*) &global_system_variables.max_error_count,
   (gptr*) &max_system_variables.max_error_count,
   0, GET_ULONG, REQUIRED_ARG, DEFAULT_ERROR_COUNT, 1, 65535, 0, 1, 0},
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  {"max_heap_table_size", OPT_MAX_HEP_TABLE_SIZE,
   "Don't allow creation of heap tables bigger than this.",
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   (gptr*) &global_system_variables.max_heap_table_size,
   (gptr*) &max_system_variables.max_heap_table_size, 0, GET_ULONG,
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   REQUIRED_ARG, 16*1024*1024L, 16384, ~0L, MALLOC_OVERHEAD, 1024, 0},
  {"max_join_size", OPT_MAX_JOIN_SIZE,
   "Joins that are probably going to read more than max_join_size records return an error.",
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   (gptr*) &global_system_variables.max_join_size,
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   (gptr*) &max_system_variables.max_join_size, 0, GET_HA_ROWS, REQUIRED_ARG,
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   ~0L, 1, ~0L, 0, 1, 0},
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   {"max_length_for_sort_data", OPT_MAX_LENGTH_FOR_SORT_DATA,
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    "Max number of bytes in sorted records.",
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    (gptr*) &global_system_variables.max_length_for_sort_data,
    (gptr*) &max_system_variables.max_length_for_sort_data, 0, GET_ULONG,
    REQUIRED_ARG, 1024, 4, 8192*1024L, 0, 1, 0},
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  {"max_prepared_statements", OPT_MAX_PREP_STMT,
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   "Max number of prepared_statements for a thread.",
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   (gptr*) &global_system_variables.max_prep_stmt_count,
   (gptr*) &max_system_variables.max_prep_stmt_count, 0, GET_ULONG,
   REQUIRED_ARG, DEFAULT_PREP_STMT_COUNT, 0, ~0L, 0, 1, 0},
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  {"max_relay_log_size", OPT_MAX_RELAY_LOG_SIZE,
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   "If non-zero: relay log will be rotated automatically when the size exceeds this value; if zero (the default): when the size exceeds max_binlog_size. 0 expected, the minimum value for this variable is 4096.",
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   (gptr*) &max_relay_log_size, (gptr*) &max_relay_log_size, 0, GET_ULONG,
   REQUIRED_ARG, 0L, 0L, 1024*1024L*1024L, 0, IO_SIZE, 0},
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  { "max_seeks_for_key", OPT_MAX_SEEKS_FOR_KEY,
    "Limit assumed max number of seeks when looking up rows based on a key",
    (gptr*) &global_system_variables.max_seeks_for_key,
    (gptr*) &max_system_variables.max_seeks_for_key, 0, GET_ULONG,
    REQUIRED_ARG, ~0L, 1, ~0L, 0, 1, 0 },
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  {"max_sort_length", OPT_MAX_SORT_LENGTH,
   "The number of bytes to use when sorting BLOB or TEXT values (only the first max_sort_length bytes of each value are used; the rest are ignored).",
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   (gptr*) &global_system_variables.max_sort_length,
   (gptr*) &max_system_variables.max_sort_length, 0, GET_ULONG,
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   REQUIRED_ARG, 1024, 4, 8192*1024L, 0, 1, 0},
  {"max_tmp_tables", OPT_MAX_TMP_TABLES,
   "Maximum number of temporary tables a client can keep open at a time.",
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   (gptr*) &global_system_variables.max_tmp_tables,
   (gptr*) &max_system_variables.max_tmp_tables, 0, GET_ULONG,
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   REQUIRED_ARG, 32, 1, ~0L, 0, 1, 0},
  {"max_user_connections", OPT_MAX_USER_CONNECTIONS,
   "The maximum number of active connections for a single user (0 = no limit).",
   (gptr*) &max_user_connections, (gptr*) &max_user_connections, 0, GET_ULONG,
   REQUIRED_ARG, 0, 1, ~0L, 0, 1, 0},
  {"max_write_lock_count", OPT_MAX_WRITE_LOCK_COUNT,
   "After this many write locks, allow some read locks to run in between.",
   (gptr*) &max_write_lock_count, (gptr*) &max_write_lock_count, 0, GET_ULONG,
   REQUIRED_ARG, ~0L, 1, ~0L, 0, 1, 0},
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  {"bulk_insert_buffer_size", OPT_BULK_INSERT_BUFFER_SIZE,
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   "Size of tree cache used in bulk insert optimisation. Note that this is a limit per thread!",
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   (gptr*) &global_system_variables.bulk_insert_buff_size,
   (gptr*) &max_system_variables.bulk_insert_buff_size,
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   0, GET_ULONG, REQUIRED_ARG, 8192*1024, 0, ~0L, 0, 1, 0},
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  {"myisam_block_size", OPT_MYISAM_BLOCK_SIZE,
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   "Block size to be used for MyISAM index pages.",
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   (gptr*) &opt_myisam_block_size,
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   (gptr*) &opt_myisam_block_size, 0, GET_ULONG, REQUIRED_ARG,
   MI_KEY_BLOCK_LENGTH, MI_MIN_KEY_BLOCK_LENGTH, MI_MAX_KEY_BLOCK_LENGTH,
   0, MI_MIN_KEY_BLOCK_LENGTH, 0},
  {"myisam_max_extra_sort_file_size", OPT_MYISAM_MAX_EXTRA_SORT_FILE_SIZE,
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   "Used to help MySQL to decide when to use the slow but safe key cache index create method.",
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   (gptr*) &global_system_variables.myisam_max_extra_sort_file_size,
   (gptr*) &max_system_variables.myisam_max_extra_sort_file_size,
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   0, GET_ULL, REQUIRED_ARG, (ulonglong) MI_MAX_TEMP_LENGTH,
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   0, (ulonglong) MAX_FILE_SIZE, 0, 1, 0},
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  {"myisam_max_sort_file_size", OPT_MYISAM_MAX_SORT_FILE_SIZE,
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   "Don't use the fast sort index method to created index if the temporary file would get bigger than this.",
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   (gptr*) &global_system_variables.myisam_max_sort_file_size,
   (gptr*) &max_system_variables.myisam_max_sort_file_size, 0,
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   GET_ULL, REQUIRED_ARG, (longlong) LONG_MAX, 0, (ulonglong) MAX_FILE_SIZE,
   0, 1024*1024, 0},
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  {"myisam_repair_threads", OPT_MYISAM_REPAIR_THREADS,
   "Number of threads to use when repairing MyISAM tables. The value of 1 disables parallel repair.",
   (gptr*) &global_system_variables.myisam_repair_threads,
   (gptr*) &max_system_variables.myisam_repair_threads, 0,
   GET_ULONG, REQUIRED_ARG, 1, 1, ~0L, 0, 1, 0},
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  {"myisam_sort_buffer_size", OPT_MYISAM_SORT_BUFFER_SIZE,
   "The buffer that is allocated when sorting the index when doing a REPAIR or when creating indexes with CREATE INDEX or ALTER TABLE.",
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   (gptr*) &global_system_variables.myisam_sort_buff_size,
   (gptr*) &max_system_variables.myisam_sort_buff_size, 0,
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   GET_ULONG, REQUIRED_ARG, 8192*1024, 4, ~0L, 0, 1, 0},
  {"net_buffer_length", OPT_NET_BUFFER_LENGTH,
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   "Buffer length for TCP/IP and socket communication.",
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   (gptr*) &global_system_variables.net_buffer_length,
   (gptr*) &max_system_variables.net_buffer_length, 0, GET_ULONG,
   REQUIRED_ARG, 16384, 1024, 1024*1024L, 0, 1024, 0},
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  {"net_retry_count", OPT_NET_RETRY_COUNT,
   "If a read on a communication port is interrupted, retry this many times before giving up.",
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   (gptr*) &global_system_variables.net_retry_count,
   (gptr*) &max_system_variables.net_retry_count,0,
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   GET_ULONG, REQUIRED_ARG, MYSQLD_NET_RETRY_COUNT, 1, ~0L, 0, 1, 0},
  {"net_read_timeout", OPT_NET_READ_TIMEOUT,
   "Number of seconds to wait for more data from a connection before aborting the read.",
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   (gptr*) &global_system_variables.net_read_timeout,
   (gptr*) &max_system_variables.net_read_timeout, 0, GET_ULONG,
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   REQUIRED_ARG, NET_READ_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
  {"net_write_timeout", OPT_NET_WRITE_TIMEOUT,
   "Number of seconds to wait for a block to be written to a connection  before aborting the write.",
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   (gptr*) &global_system_variables.net_write_timeout,
   (gptr*) &max_system_variables.net_write_timeout, 0, GET_ULONG,
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   REQUIRED_ARG, NET_WRITE_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
  {"open_files_limit", OPT_OPEN_FILES_LIMIT,
   "If this is not 0, then mysqld will use this value to reserve file descriptors to use with setrlimit(). If this value is 0 then mysqld will reserve max_connections*5 or max_connections + table_cache*2 (whichever is larger) number of files.",
   (gptr*) &open_files_limit, (gptr*) &open_files_limit, 0, GET_ULONG,
   REQUIRED_ARG, 0, 0, 65535, 0, 1, 0},
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   {"preload_buffer_size", OPT_PRELOAD_BUFFER_SIZE,
    "The size of the buffer that is allocated when preloading indexes",
    (gptr*) &global_system_variables.preload_buff_size,
    (gptr*) &max_system_variables.preload_buff_size, 0, GET_ULONG,
    REQUIRED_ARG, 32*1024L, 1024, 1024*1024*1024L, 0, 1, 0},
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  {"query_alloc_block_size", OPT_QUERY_ALLOC_BLOCK_SIZE,
   "Allocation block size for query parsing and execution",
   (gptr*) &global_system_variables.query_alloc_block_size,
   (gptr*) &max_system_variables.query_alloc_block_size, 0, GET_ULONG,
   REQUIRED_ARG, QUERY_ALLOC_BLOCK_SIZE, 1024, ~0L, 0, 1024, 0},
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#ifdef HAVE_QUERY_CACHE
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  {"query_cache_limit", OPT_QUERY_CACHE_LIMIT,
   "Don't cache results that are bigger than this.",
   (gptr*) &query_cache_limit, (gptr*) &query_cache_limit, 0, GET_ULONG,
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   REQUIRED_ARG, 1024*1024L, 0, (longlong) ULONG_MAX, 0, 1, 0},
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  {"query_cache_min_res_unit", OPT_QUERY_CACHE_MIN_RES_UNIT,
   "minimal size of unit in wich space for results is allocated (last unit will be trimed after writing all result data.",
   (gptr*) &query_cache_min_res_unit, (gptr*) &query_cache_min_res_unit,
   0, GET_ULONG, REQUIRED_ARG, QUERY_CACHE_MIN_RESULT_DATA_SIZE,
   0, (longlong) ULONG_MAX, 0, 1, 0},
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#endif /*HAVE_QUERY_CACHE*/
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  {"query_cache_size", OPT_QUERY_CACHE_SIZE,
   "The memory allocated to store results from old queries.",
   (gptr*) &query_cache_size, (gptr*) &query_cache_size, 0, GET_ULONG,
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   REQUIRED_ARG, 0, 0, (longlong) ULONG_MAX, 0, 1024, 0},
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#ifdef HAVE_QUERY_CACHE
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  {"query_cache_type", OPT_QUERY_CACHE_TYPE,
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   "0 = OFF = Don't cache or retrieve results. 1 = ON = Cache all results except SELECT SQL_NO_CACHE ... queries. 2 = DEMAND = Cache only SELECT SQL_CACHE ... queries.",
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   (gptr*) &global_system_variables.query_cache_type,
   (gptr*) &max_system_variables.query_cache_type,
   0, GET_ULONG, REQUIRED_ARG, 1, 0, 2, 0, 1, 0},
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  {"query_prealloc_size", OPT_QUERY_PREALLOC_SIZE,
   "Persistent buffer for query parsing and execution",
   (gptr*) &global_system_variables.query_prealloc_size,
   (gptr*) &max_system_variables.query_prealloc_size, 0, GET_ULONG,
   REQUIRED_ARG, QUERY_ALLOC_PREALLOC_SIZE, 1024, ~0L, 0, 1024, 0},
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#endif /*HAVE_QUERY_CACHE*/
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  {"read_buffer_size", OPT_RECORD_BUFFER,
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   "Each thread that does a sequential scan allocates a buffer of this size for each table it scans. If you do many sequential scans, you may want to increase this value.",
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   (gptr*) &global_system_variables.read_buff_size,
   (gptr*) &max_system_variables.read_buff_size,0, GET_ULONG, REQUIRED_ARG,
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   128*1024L, IO_SIZE*2+MALLOC_OVERHEAD, ~0L, MALLOC_OVERHEAD, IO_SIZE, 0},
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  {"read_rnd_buffer_size", OPT_RECORD_RND_BUFFER,
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   "When reading rows in sorted order after a sort, the rows are read through this buffer to avoid a disk seeks. If not set, then it's set to the value of record_buffer.",
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   (gptr*) &global_system_variables.read_rnd_buff_size,
   (gptr*) &max_system_variables.read_rnd_buff_size, 0,
   GET_ULONG, REQUIRED_ARG, 256*1024L, IO_SIZE*2+MALLOC_OVERHEAD,
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   ~0L, MALLOC_OVERHEAD, IO_SIZE, 0},
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  {"record_buffer", OPT_RECORD_BUFFER,
   "Alias for read_buffer_size",
   (gptr*) &global_system_variables.read_buff_size,
   (gptr*) &max_system_variables.read_buff_size,0, GET_ULONG, REQUIRED_ARG,
   128*1024L, IO_SIZE*2+MALLOC_OVERHEAD, ~0L, MALLOC_OVERHEAD, IO_SIZE, 0},
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#ifdef HAVE_REPLICATION
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  {"relay_log_purge", OPT_RELAY_LOG_PURGE,
   "0 = do not purge relay logs. 1 = purge them as soon as they are no more needed.",
   (gptr*) &relay_log_purge,
   (gptr*) &relay_log_purge, 0, GET_BOOL, NO_ARG,
   1, 0, 1, 0, 1, 0},
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  {"relay_log_space_limit", OPT_RELAY_LOG_SPACE_LIMIT,
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   "Maximum space to use for all relay logs.",
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   (gptr*) &relay_log_space_limit,
   (gptr*) &relay_log_space_limit, 0, GET_ULL, REQUIRED_ARG, 0L, 0L,
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   (longlong) ULONG_MAX, 0, 1, 0},
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  {"slave_compressed_protocol", OPT_SLAVE_COMPRESSED_PROTOCOL,
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   "Use compression on master/slave protocol.",
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   (gptr*) &opt_slave_compressed_protocol,
   (gptr*) &opt_slave_compressed_protocol,
   0, GET_BOOL, REQUIRED_ARG, 0, 0, 1, 0, 1, 0},
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  {"slave_net_timeout", OPT_SLAVE_NET_TIMEOUT,
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   "Number of seconds to wait for more data from a master/slave connection before aborting the read.",
   (gptr*) &slave_net_timeout, (gptr*) &slave_net_timeout, 0,
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   GET_ULONG, REQUIRED_ARG, SLAVE_NET_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
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#endif /* HAVE_REPLICATION */
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  {"range_alloc_block_size", OPT_RANGE_ALLOC_BLOCK_SIZE,
   "Allocation block size for storing ranges during optimization",
   (gptr*) &global_system_variables.range_alloc_block_size,
   (gptr*) &max_system_variables.range_alloc_block_size, 0, GET_ULONG,
   REQUIRED_ARG, RANGE_ALLOC_BLOCK_SIZE, 1024, ~0L, 0, 1024, 0},
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  {"read-only", OPT_READONLY,
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   "Make all tables readonly, with the expections for replications (slave) threads and users with the SUPER privilege.",
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   (gptr*) &opt_readonly,
   (gptr*) &opt_readonly,
   0, GET_BOOL, NO_ARG, 0, 0, 1, 0, 1, 0},
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  {"slow_launch_time", OPT_SLOW_LAUNCH_TIME,
   "If creating the thread takes longer than this value (in seconds), the Slow_launch_threads counter will be incremented.",
   (gptr*) &slow_launch_time, (gptr*) &slow_launch_time, 0, GET_ULONG,
   REQUIRED_ARG, 2L, 0L, LONG_TIMEOUT, 0, 1, 0},
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  {"sort_buffer_size", OPT_SORT_BUFFER,
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   "Each thread that needs to do a sort allocates a buffer of this size.",
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   (gptr*) &global_system_variables.sortbuff_size,
   (gptr*) &max_system_variables.sortbuff_size, 0, GET_ULONG, REQUIRED_ARG,
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   MAX_SORT_MEMORY, MIN_SORT_MEMORY+MALLOC_OVERHEAD*2, ~0L, MALLOC_OVERHEAD,
   1, 0},
  {"table_cache", OPT_TABLE_CACHE,
   "The number of open tables for all threads.", (gptr*) &table_cache_size,
   (gptr*) &table_cache_size, 0, GET_ULONG, REQUIRED_ARG, 64, 1, 16384, 0, 1,
   0},
  {"thread_concurrency", OPT_THREAD_CONCURRENCY,
   "Permits the application to give the threads system a hint for the desired number of threads that should be run at the same time.",
   (gptr*) &concurrency, (gptr*) &concurrency, 0, GET_ULONG, REQUIRED_ARG,
   DEFAULT_CONCURRENCY, 1, 512, 0, 1, 0},
  {"thread_cache_size", OPT_THREAD_CACHE_SIZE,
   "How many threads we should keep in a cache for reuse.",
   (gptr*) &thread_cache_size, (gptr*) &thread_cache_size, 0, GET_ULONG,
   REQUIRED_ARG, 0, 0, 16384, 0, 1, 0},
  {"tmp_table_size", OPT_TMP_TABLE_SIZE,
   "If an in-memory temporary table exceeds this size, MySQL will automatically convert it to an on-disk MyISAM table.",
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   (gptr*) &global_system_variables.tmp_table_size,
   (gptr*) &max_system_variables.tmp_table_size, 0, GET_ULONG,
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   REQUIRED_ARG, 32*1024*1024L, 1024, ~0L, 0, 1, 0},
  {"thread_stack", OPT_THREAD_STACK,
   "The stack size for each thread.", (gptr*) &thread_stack,
   (gptr*) &thread_stack, 0, GET_ULONG, REQUIRED_ARG,DEFAULT_THREAD_STACK,
   1024*32, ~0L, 0, 1024, 0},
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  {"transaction_alloc_block_size", OPT_TRANS_ALLOC_BLOCK_SIZE,
   "Allocation block size for transactions to be stored in binary log",
   (gptr*) &global_system_variables.trans_alloc_block_size,
   (gptr*) &max_system_variables.trans_alloc_block_size, 0, GET_ULONG,
   REQUIRED_ARG, QUERY_ALLOC_BLOCK_SIZE, 1024, ~0L, 0, 1024, 0},
  {"transaction_prealloc_size", OPT_TRANS_PREALLOC_SIZE,
   "Persistent buffer for transactions to be stored in binary log",
   (gptr*) &global_system_variables.trans_prealloc_size,
   (gptr*) &max_system_variables.trans_prealloc_size, 0, GET_ULONG,
   REQUIRED_ARG, TRANS_ALLOC_PREALLOC_SIZE, 1024, ~0L, 0, 1024, 0},
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  {"wait_timeout", OPT_WAIT_TIMEOUT,
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   "The number of seconds the server waits for activity on a connection before closing it.",
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   (gptr*) &global_system_variables.net_wait_timeout,
   (gptr*) &max_system_variables.net_wait_timeout, 0, GET_ULONG,
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   REQUIRED_ARG, NET_WAIT_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
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  {"expire_logs_days", OPT_EXPIRE_LOGS_DAYS,
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   "Logs will be rotated after expire-log-days days ",
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   (gptr*) &expire_logs_days,
   (gptr*) &expire_logs_days, 0, GET_ULONG,
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   REQUIRED_ARG, 0, 0, 99, 0, 1, 0},
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  { "default-week-format", OPT_DEFAULT_WEEK_FORMAT,
    "The default week format used by WEEK() functions.",
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    (gptr*) &global_system_variables.default_week_format,
    (gptr*) &max_system_variables.default_week_format,
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    0, GET_ULONG, REQUIRED_ARG, 0, 0, 3L, 0, 1, 0},
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  { "date-format", OPT_DATE_FORMAT,
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    "The DATE format (For future).",
    (gptr*) &opt_date_time_formats[TIMESTAMP_DATE],
    (gptr*) &opt_date_time_formats[TIMESTAMP_DATE],
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    0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  { "datetime-format", OPT_DATETIME_FORMAT,
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    "The DATETIME/TIMESTAMP format (for future).",
    (gptr*) &opt_date_time_formats[TIMESTAMP_DATETIME],
    (gptr*) &opt_date_time_formats[TIMESTAMP_DATETIME],
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    0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  { "time-format", OPT_TIME_FORMAT,
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    "The TIME format (for future).",
    (gptr*) &opt_date_time_formats[TIMESTAMP_TIME],
    (gptr*) &opt_date_time_formats[TIMESTAMP_TIME],
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    0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
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  {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
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};
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struct show_var_st status_vars[]= {
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  {"Aborted_clients",          (char*) &aborted_threads,        SHOW_LONG},
  {"Aborted_connects",         (char*) &aborted_connects,       SHOW_LONG},
  {"Bytes_received",           (char*) &bytes_received,         SHOW_LONG},
  {"Bytes_sent",               (char*) &bytes_sent,             SHOW_LONG},
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  {"Com_admin_commands",       (char*) &com_other,		SHOW_LONG},
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  {"Com_alter_db",	       (char*) (com_stat+(uint) SQLCOM_ALTER_DB),SHOW_LONG},
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  {"Com_alter_table",	       (char*) (com_stat+(uint) SQLCOM_ALTER_TABLE),SHOW_LONG},
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  {"Com_analyze",	       (char*) (com_stat+(uint) SQLCOM_ANALYZE),SHOW_LONG},
  {"Com_backup_table",	       (char*) (com_stat+(uint) SQLCOM_BACKUP_TABLE),SHOW_LONG},
  {"Com_begin",		       (char*) (com_stat+(uint) SQLCOM_BEGIN),SHOW_LONG},
  {"Com_change_db",	       (char*) (com_stat+(uint) SQLCOM_CHANGE_DB),SHOW_LONG},
  {"Com_change_master",	       (char*) (com_stat+(uint) SQLCOM_CHANGE_MASTER),SHOW_LONG},
  {"Com_check",		       (char*) (com_stat+(uint) SQLCOM_CHECK),SHOW_LONG},
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  {"Com_checksum",	       (char*) (com_stat+(uint) SQLCOM_CHECKSUM),SHOW_LONG},
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  {"Com_commit",	       (char*) (com_stat+(uint) SQLCOM_COMMIT),SHOW_LONG},
  {"Com_create_db",	       (char*) (com_stat+(uint) SQLCOM_CREATE_DB),SHOW_LONG},
  {"Com_create_function",      (char*) (com_stat+(uint) SQLCOM_CREATE_FUNCTION),SHOW_LONG},
  {"Com_create_index",	       (char*) (com_stat+(uint) SQLCOM_CREATE_INDEX),SHOW_LONG},
  {"Com_create_table",	       (char*) (com_stat+(uint) SQLCOM_CREATE_TABLE),SHOW_LONG},
  {"Com_delete",	       (char*) (com_stat+(uint) SQLCOM_DELETE),SHOW_LONG},
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  {"Com_delete_multi",	       (char*) (com_stat+(uint) SQLCOM_DELETE_MULTI),SHOW_LONG},
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  {"Com_do",                   (char*) (com_stat+(uint) SQLCOM_DO),SHOW_LONG},
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  {"Com_drop_db",	       (char*) (com_stat+(uint) SQLCOM_DROP_DB),SHOW_LONG},
  {"Com_drop_function",	       (char*) (com_stat+(uint) SQLCOM_DROP_FUNCTION),SHOW_LONG},
  {"Com_drop_index",	       (char*) (com_stat+(uint) SQLCOM_DROP_INDEX),SHOW_LONG},
  {"Com_drop_table",	       (char*) (com_stat+(uint) SQLCOM_DROP_TABLE),SHOW_LONG},
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  {"Com_drop_user",	       (char*) (com_stat+(uint) SQLCOM_DROP_USER),SHOW_LONG},
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  {"Com_flush",		       (char*) (com_stat+(uint) SQLCOM_FLUSH),SHOW_LONG},
  {"Com_grant",		       (char*) (com_stat+(uint) SQLCOM_GRANT),SHOW_LONG},
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  {"Com_ha_close",	       (char*) (com_stat+(uint) SQLCOM_HA_CLOSE),SHOW_LONG},
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  {"Com_ha_open",	       (char*) (com_stat+(uint) SQLCOM_HA_OPEN),SHOW_LONG},
  {"Com_ha_read",	       (char*) (com_stat+(uint) SQLCOM_HA_READ),SHOW_LONG},
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  {"Com_help",                 (char*) (com_stat+(uint) SQLCOM_HELP),SHOW_LONG},
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  {"Com_insert",	       (char*) (com_stat+(uint) SQLCOM_INSERT),SHOW_LONG},
  {"Com_insert_select",	       (char*) (com_stat+(uint) SQLCOM_INSERT_SELECT),SHOW_LONG},
  {"Com_kill",		       (char*) (com_stat+(uint) SQLCOM_KILL),SHOW_LONG},
  {"Com_load",		       (char*) (com_stat+(uint) SQLCOM_LOAD),SHOW_LONG},
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  {"Com_load_master_data",     (char*) (com_stat+(uint) SQLCOM_LOAD_MASTER_DATA),SHOW_LONG},
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  {"Com_load_master_table",    (char*) (com_stat+(uint) SQLCOM_LOAD_MASTER_TABLE),SHOW_LONG},
  {"Com_lock_tables",	       (char*) (com_stat+(uint) SQLCOM_LOCK_TABLES),SHOW_LONG},
  {"Com_optimize",	       (char*) (com_stat+(uint) SQLCOM_OPTIMIZE),SHOW_LONG},
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  {"Com_preload_keys",	       (char*) (com_stat+(uint) SQLCOM_PRELOAD_KEYS),SHOW_LONG},
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  {"Com_purge",		       (char*) (com_stat+(uint) SQLCOM_PURGE),SHOW_LONG},
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  {"Com_purge_before_date",    (char*) (com_stat+(uint) SQLCOM_PURGE_BEFORE),SHOW_LONG},
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  {"Com_rename_table",	       (char*) (com_stat+(uint) SQLCOM_RENAME_TABLE),SHOW_LONG},
  {"Com_repair",	       (char*) (com_stat+(uint) SQLCOM_REPAIR),SHOW_LONG},
  {"Com_replace",	       (char*) (com_stat+(uint) SQLCOM_REPLACE),SHOW_LONG},
  {"Com_replace_select",       (char*) (com_stat+(uint) SQLCOM_REPLACE_SELECT),SHOW_LONG},
  {"Com_reset",		       (char*) (com_stat+(uint) SQLCOM_RESET),SHOW_LONG},
  {"Com_restore_table",	       (char*) (com_stat+(uint) SQLCOM_RESTORE_TABLE),SHOW_LONG},
  {"Com_revoke",	       (char*) (com_stat+(uint) SQLCOM_REVOKE),SHOW_LONG},
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  {"Com_revoke_all",	       (char*) (com_stat+(uint) SQLCOM_REVOKE_ALL),SHOW_LONG},
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  {"Com_rollback",	       (char*) (com_stat+(uint) SQLCOM_ROLLBACK),SHOW_LONG},
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  {"Com_savepoint",	       (char*) (com_stat+(uint) SQLCOM_SAVEPOINT),SHOW_LONG},
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  {"Com_select",	       (char*) (com_stat+(uint) SQLCOM_SELECT),SHOW_LONG},
  {"Com_set_option",	       (char*) (com_stat+(uint) SQLCOM_SET_OPTION),SHOW_LONG},
  {"Com_show_binlogs",	       (char*) (com_stat+(uint) SQLCOM_SHOW_BINLOGS),SHOW_LONG},
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  {"Com_show_binlog_events",   (char*) (com_stat+(uint) SQLCOM_SHOW_BINLOG_EVENTS),SHOW_LONG},
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  {"Com_show_charsets",	       (char*) (com_stat+(uint) SQLCOM_SHOW_CHARSETS),SHOW_LONG},
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  {"Com_show_collations",      (char*) (com_stat+(uint) SQLCOM_SHOW_COLLATIONS),SHOW_LONG},
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  {"Com_show_column_types",    (char*) (com_stat+(uint) SQLCOM_SHOW_COLUMN_TYPES),SHOW_LONG},
  {"Com_show_create_table",    (char*) (com_stat+(uint) SQLCOM_SHOW_CREATE),SHOW_LONG},
  {"Com_show_create_db",       (char*) (com_stat+(uint) SQLCOM_SHOW_CREATE_DB),SHOW_LONG},
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  {"Com_show_databases",       (char*) (com_stat+(uint) SQLCOM_SHOW_DATABASES),SHOW_LONG},
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  {"Com_show_errors",	       (char*) (com_stat+(uint) SQLCOM_SHOW_ERRORS),SHOW_LONG},
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  {"Com_show_fields",	       (char*) (com_stat+(uint) SQLCOM_SHOW_FIELDS),SHOW_LONG},
  {"Com_show_grants",	       (char*) (com_stat+(uint) SQLCOM_SHOW_GRANTS),SHOW_LONG},
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  {"Com_show_innodb_status",   (char*) (com_stat+(uint) SQLCOM_SHOW_INNODB_STATUS),SHOW_LONG},
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  {"Com_show_keys",	       (char*) (com_stat+(uint) SQLCOM_SHOW_KEYS),SHOW_LONG},
  {"Com_show_logs",	       (char*) (com_stat+(uint) SQLCOM_SHOW_LOGS),SHOW_LONG},
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  {"Com_show_master_status",   (char*) (com_stat+(uint) SQLCOM_SHOW_MASTER_STAT),SHOW_LONG},
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  {"Com_show_new_master",      (char*) (com_stat+(uint) SQLCOM_SHOW_NEW_MASTER),SHOW_LONG},
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  {"Com_show_open_tables",     (char*) (com_stat+(uint) SQLCOM_SHOW_OPEN_TABLES),SHOW_LONG},
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  {"Com_show_privileges",      (char*) (com_stat+(uint) SQLCOM_SHOW_PRIVILEGES),SHOW_LONG},
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  {"Com_show_processlist",     (char*) (com_stat+(uint) SQLCOM_SHOW_PROCESSLIST),SHOW_LONG},
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  {"Com_show_slave_hosts",     (char*) (com_stat+(uint) SQLCOM_SHOW_SLAVE_HOSTS),SHOW_LONG},
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  {"Com_show_slave_status",    (char*) (com_stat+(uint) SQLCOM_SHOW_SLAVE_STAT),SHOW_LONG},
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  {"Com_show_status",	       (char*) (com_stat+(uint) SQLCOM_SHOW_STATUS),SHOW_LONG},
  {"Com_show_tables",	       (char*) (com_stat+(uint) SQLCOM_SHOW_TABLES),SHOW_LONG},
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  {"Com_show_table_types",     (char*) (com_stat+(uint) SQLCOM_SHOW_TABLE_TYPES),SHOW_LONG},
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  {"Com_show_variables",       (char*) (com_stat+(uint) SQLCOM_SHOW_VARIABLES),SHOW_LONG},
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  {"Com_show_warnings",        (char*) (com_stat+(uint) SQLCOM_SHOW_WARNS),SHOW_LONG},
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  {"Com_slave_start",	       (char*) (com_stat+(uint) SQLCOM_SLAVE_START),SHOW_LONG},
  {"Com_slave_stop",	       (char*) (com_stat+(uint) SQLCOM_SLAVE_STOP),SHOW_LONG},
  {"Com_truncate",	       (char*) (com_stat+(uint) SQLCOM_TRUNCATE),SHOW_LONG},
  {"Com_unlock_tables",	       (char*) (com_stat+(uint) SQLCOM_UNLOCK_TABLES),SHOW_LONG},
  {"Com_update",	       (char*) (com_stat+(uint) SQLCOM_UPDATE),SHOW_LONG},
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  {"Com_update_multi",	       (char*) (com_stat+(uint) SQLCOM_UPDATE_MULTI),SHOW_LONG},
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  {"Connections",              (char*) &thread_id,              SHOW_LONG_CONST},
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  {"Created_tmp_disk_tables",  (char*) &created_tmp_disk_tables,SHOW_LONG},
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  {"Created_tmp_tables",       (char*) &created_tmp_tables,     SHOW_LONG},
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  {"Created_tmp_files",	       (char*) &my_tmp_file_created,	SHOW_LONG},
4737
  {"Delayed_insert_threads",   (char*) &delayed_insert_threads, SHOW_LONG_CONST},
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  {"Delayed_writes",           (char*) &delayed_insert_writes,  SHOW_LONG},
  {"Delayed_errors",           (char*) &delayed_insert_errors,  SHOW_LONG},
  {"Flush_commands",           (char*) &refresh_version,        SHOW_LONG_CONST},
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  {"Handler_commit",           (char*) &ha_commit_count,        SHOW_LONG},
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  {"Handler_delete",           (char*) &ha_delete_count,        SHOW_LONG},
  {"Handler_read_first",       (char*) &ha_read_first_count,    SHOW_LONG},
  {"Handler_read_key",         (char*) &ha_read_key_count,      SHOW_LONG},
  {"Handler_read_next",        (char*) &ha_read_next_count,     SHOW_LONG},
  {"Handler_read_prev",        (char*) &ha_read_prev_count,     SHOW_LONG},
  {"Handler_read_rnd",         (char*) &ha_read_rnd_count,      SHOW_LONG},
  {"Handler_read_rnd_next",    (char*) &ha_read_rnd_next_count, SHOW_LONG},
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  {"Handler_rollback",         (char*) &ha_rollback_count,      SHOW_LONG},
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  {"Handler_update",           (char*) &ha_update_count,        SHOW_LONG},
  {"Handler_write",            (char*) &ha_write_count,         SHOW_LONG},
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  {"Key_blocks_used",          (char*) &dflt_key_cache_var.blocks_used,
                                                          SHOW_LONG_CONST},
  {"Key_read_requests",        (char*) &dflt_key_cache_var.cache_r_requests,
                                                                SHOW_LONG},
  {"Key_reads",                (char*) &dflt_key_cache_var.cache_read,
                                                                SHOW_LONG},
  {"Key_write_requests",       (char*) &dflt_key_cache_var.cache_w_requests,
                                                                SHOW_LONG},
  {"Key_writes",               (char*) &dflt_key_cache_var.cache_write,
                                                                SHOW_LONG},
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  {"Max_used_connections",     (char*) &max_used_connections,  SHOW_LONG},
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  {"Not_flushed_key_blocks",   (char*) &dflt_key_cache_var.blocks_changed,
                                                          SHOW_LONG_CONST},
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  {"Not_flushed_delayed_rows", (char*) &delayed_rows_in_use,    SHOW_LONG_CONST},
  {"Open_tables",              (char*) 0,                       SHOW_OPENTABLES},
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  {"Open_files",               (char*) &my_file_opened,         SHOW_LONG_CONST},
  {"Open_streams",             (char*) &my_stream_opened,       SHOW_LONG_CONST},
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  {"Opened_tables",            (char*) &opened_tables,          SHOW_LONG},
  {"Questions",                (char*) 0,                       SHOW_QUESTION},
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#ifdef HAVE_QUERY_CACHE
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  {"Qcache_queries_in_cache",  (char*) &query_cache.queries_in_cache, SHOW_LONG_CONST},
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  {"Qcache_inserts",           (char*) &query_cache.inserts,    SHOW_LONG},
  {"Qcache_hits",              (char*) &query_cache.hits,       SHOW_LONG},
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  {"Qcache_lowmem_prunes",     (char*) &query_cache.lowmem_prunes, SHOW_LONG},
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  {"Qcache_not_cached",        (char*) &query_cache.refused,    SHOW_LONG},
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  {"Qcache_free_memory",       (char*) &query_cache.free_memory,
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   SHOW_LONG_CONST},
  {"Qcache_free_blocks",       (char*) &query_cache.free_memory_blocks,
   SHOW_LONG_CONST},
  {"Qcache_total_blocks",      (char*) &query_cache.total_blocks,
   SHOW_LONG_CONST},
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#endif /*HAVE_QUERY_CACHE*/
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  {"Rpl_status",               (char*) 0,                 SHOW_RPL_STATUS},
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  {"Select_full_join",         (char*) &select_full_join_count, SHOW_LONG},
  {"Select_full_range_join",   (char*) &select_full_range_join_count, SHOW_LONG},
  {"Select_range",             (char*) &select_range_count, 	SHOW_LONG},
  {"Select_range_check",       (char*) &select_range_check_count, SHOW_LONG},
  {"Select_scan",	       (char*) &select_scan_count,	SHOW_LONG},
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  {"Slave_open_temp_tables",   (char*) &slave_open_temp_tables, SHOW_LONG},
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  {"Slave_running",            (char*) 0, SHOW_SLAVE_RUNNING},
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  {"Slow_launch_threads",      (char*) &slow_launch_threads,    SHOW_LONG},
  {"Slow_queries",             (char*) &long_query_count,       SHOW_LONG},
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  {"Sort_merge_passes",	       (char*) &filesort_merge_passes,  SHOW_LONG},
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  {"Sort_range",	       (char*) &filesort_range_count,   SHOW_LONG},
  {"Sort_rows",		       (char*) &filesort_rows,	        SHOW_LONG},
  {"Sort_scan",		       (char*) &filesort_scan_count,    SHOW_LONG},
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#ifdef HAVE_OPENSSL
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  {"Ssl_accepts",              (char*) 0,  	SHOW_SSL_CTX_SESS_ACCEPT},
  {"Ssl_finished_accepts",     (char*) 0,  	SHOW_SSL_CTX_SESS_ACCEPT_GOOD},
  {"Ssl_finished_connects",    (char*) 0,  	SHOW_SSL_CTX_SESS_CONNECT_GOOD},
  {"Ssl_accept_renegotiates",  (char*) 0, 	SHOW_SSL_CTX_SESS_ACCEPT_RENEGOTIATE},
  {"Ssl_connect_renegotiates", (char*) 0, 	SHOW_SSL_CTX_SESS_CONNECT_RENEGOTIATE},
  {"Ssl_callback_cache_hits",  (char*) 0,	SHOW_SSL_CTX_SESS_CB_HITS},
  {"Ssl_session_cache_hits",   (char*) 0,	SHOW_SSL_CTX_SESS_HITS},
  {"Ssl_session_cache_misses", (char*) 0,	SHOW_SSL_CTX_SESS_MISSES},
  {"Ssl_session_cache_timeouts", (char*) 0,	SHOW_SSL_CTX_SESS_TIMEOUTS},
  {"Ssl_used_session_cache_entries",(char*) 0,	SHOW_SSL_CTX_SESS_NUMBER},
  {"Ssl_client_connects",      (char*) 0,	SHOW_SSL_CTX_SESS_CONNECT},
  {"Ssl_session_cache_overflows", (char*) 0,	SHOW_SSL_CTX_SESS_CACHE_FULL},
  {"Ssl_session_cache_size",   (char*) 0,	SHOW_SSL_CTX_SESS_GET_CACHE_SIZE},
  {"Ssl_session_cache_mode",   (char*) 0,	SHOW_SSL_CTX_GET_SESSION_CACHE_MODE},
  {"Ssl_sessions_reused",      (char*) 0,	SHOW_SSL_SESSION_REUSED},
  {"Ssl_ctx_verify_mode",      (char*) 0,	SHOW_SSL_CTX_GET_VERIFY_MODE},
  {"Ssl_ctx_verify_depth",     (char*) 0,	SHOW_SSL_CTX_GET_VERIFY_DEPTH},
  {"Ssl_verify_mode",          (char*) 0,	SHOW_SSL_GET_VERIFY_MODE},
  {"Ssl_verify_depth",         (char*) 0,	SHOW_SSL_GET_VERIFY_DEPTH},
  {"Ssl_version",   	       (char*) 0,  	SHOW_SSL_GET_VERSION},
  {"Ssl_cipher",               (char*) 0,  	SHOW_SSL_GET_CIPHER},
  {"Ssl_cipher_list",          (char*) 0,  	SHOW_SSL_GET_CIPHER_LIST},
  {"Ssl_default_timeout",      (char*) 0,  	SHOW_SSL_GET_DEFAULT_TIMEOUT},
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#endif /* HAVE_OPENSSL */
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  {"Table_locks_immediate",    (char*) &locks_immediate,        SHOW_LONG},
  {"Table_locks_waited",       (char*) &locks_waited,           SHOW_LONG},
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  {"Threads_cached",           (char*) &cached_thread_count,    SHOW_LONG_CONST},
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  {"Threads_created",	       (char*) &thread_created,		SHOW_LONG_CONST},
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  {"Threads_connected",        (char*) &thread_count,           SHOW_INT_CONST},
  {"Threads_running",          (char*) &thread_running,         SHOW_INT_CONST},
  {"Uptime",                   (char*) 0,                       SHOW_STARTTIME},
  {NullS, NullS, SHOW_LONG}
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};

static void print_version(void)
{
  printf("%s  Ver %s for %s on %s\n",my_progname,
	 server_version,SYSTEM_TYPE,MACHINE_TYPE);
}

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static void use_help(void)
{
  print_version();
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  printf("Use '--help' or '--no-defaults --help' for a list of available options\n");
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}
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static void usage(void)
{
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  if (!(default_charset_info= get_charset_by_csname(default_character_set_name,
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					           MY_CS_PRIMARY,
						   MYF(MY_WME))))
    exit(1);
  if (!default_collation_name)
    default_collation_name= (char*) default_charset_info->name;
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  print_version();
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  puts("\
Copyright (C) 2000 MySQL AB, by Monty and others\n\
This software comes with ABSOLUTELY NO WARRANTY. This is free software,\n\
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and you are welcome to modify and redistribute it under the GPL license\n\n\
Starts the MySQL database server\n");
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  printf("Usage: %s [OPTIONS]\n", my_progname);
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  if (!opt_verbose)
    puts("\nFor more help options (several pages), use mysqld --verbose --help\n");
  else
  {
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#ifdef __WIN__
  puts("NT and Win32 specific options:\n\
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  --install                     Install the default service (NT)\n\
  --install-manual              Install the default service started manually (NT)\n\
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  --install service_name        Install an optional service (NT)\n\
  --install-manual service_name Install an optional service started manually (NT)\n\
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  --remove                      Remove the default service from the service list (NT)\n\
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  --remove service_name         Remove the service_name from the service list (NT)\n\
  --enable-named-pipe           Only to be used for the	default server (NT)\n\
  --standalone                  Dummy option to start as a standalone server (NT)\
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");
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  puts("");
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#endif
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  print_defaults(MYSQL_CONFIG_NAME,load_default_groups);
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  puts("");
  fix_paths();
  set_ports();
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  my_print_help(my_long_options);
  my_print_variables(my_long_options);

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  puts("\n\
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To see what values a running MySQL server is using, type\n\
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'mysqladmin variables' instead of 'mysqld --verbose --help'.\n");
  }
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}


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/*
  Initialize all MySQL global variables to default values

  SYNOPSIS
    mysql_init_variables()

  NOTES
    The reason to set a lot of global variables to zero is to allow one to
    restart the embedded server with a clean environment
    It's also needed on some exotic platforms where global variables are
    not set to 0 when a program starts.
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    We don't need to set numeric variables refered to in my_long_options
    as these are initialized by my_getopt.
*/
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static void mysql_init_variables(void)
{
  /* Things reset to zero */
  opt_skip_slave_start= opt_reckless_slave = 0;
  mysql_home[0]= pidfile_name[0]= log_error_file[0]= 0;
  opt_log= opt_update_log= opt_bin_log= opt_slow_log= 0;
  opt_disable_networking= opt_skip_show_db=0;
  opt_logname= opt_update_logname= opt_binlog_index_name= opt_slow_logname=0;
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  opt_secure_auth= 0;
  opt_bootstrap= opt_myisam_log= 0;
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  mqh_used= 0;
  segfaulted= kill_in_progress= 0;
  cleanup_done= 0;
  defaults_argv= 0;
  server_id_supplied= 0;
  test_flags= select_errors= dropping_tables= ha_open_options=0;
  thread_count= thread_running= kill_cached_threads= wake_thread=0;
  slave_open_temp_tables= 0;
  com_other= 0;
  cached_thread_count= 0;
  bytes_sent= bytes_received= 0;
  opt_endinfo= using_udf_functions= 0;
  opt_using_transactions= using_update_log= 0;
  abort_loop= select_thread_in_use= signal_thread_in_use= 0;
  ready_to_exit= shutdown_in_progress= grant_option= 0;
  long_query_count= aborted_threads= aborted_connects= 0;
  delayed_insert_threads= delayed_insert_writes= delayed_rows_in_use= 0;
  delayed_insert_errors= thread_created= 0;
  filesort_rows= filesort_range_count= filesort_scan_count= 0;
  filesort_merge_passes= select_range_check_count= select_range_count= 0;
  select_scan_count= select_full_range_join_count= select_full_join_count= 0;
  specialflag= opened_tables= created_tmp_tables= created_tmp_disk_tables= 0;
  max_used_connections= slow_launch_threads = 0;
  max_sort_char= 0;
  mysqld_user= mysqld_chroot= opt_init_file= opt_bin_logname = 0;
  errmesg= 0;
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  mysqld_unix_port= opt_mysql_tmpdir= my_bind_addr_str= NullS;
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  bzero((gptr) &mysql_tmpdir_list, sizeof(mysql_tmpdir_list));
  bzero((gptr) &com_stat, sizeof(com_stat));

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  /* Character sets */
  system_charset_info= &my_charset_utf8_general_ci;
  files_charset_info= &my_charset_utf8_general_ci;
  national_charset_info= &my_charset_utf8_general_ci;
  table_alias_charset= &my_charset_bin;

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  opt_date_time_formats[0]= opt_date_time_formats[1]= opt_date_time_formats[2]= 0;

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  /* Things with default values that are not zero */
  delay_key_write_options= (uint) DELAY_KEY_WRITE_ON;
  opt_specialflag= SPECIAL_ENGLISH;
  unix_sock= ip_sock= INVALID_SOCKET;
  mysql_home_ptr= mysql_home;
  pidfile_name_ptr= pidfile_name;
  log_error_file_ptr= log_error_file;
  language_ptr= language;
  mysql_data_home= mysql_real_data_home;
  thd_startup_options= (OPTION_UPDATE_LOG | OPTION_AUTO_IS_NULL |
			OPTION_BIN_LOG | OPTION_QUOTE_SHOW_CREATE);
  protocol_version= PROTOCOL_VERSION;
  what_to_log= ~ (1L << (uint) COM_TIME);
  refresh_version= flush_version= 1L;	/* Increments on each reload */
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  query_id= thread_id= 1L;
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  strmov(server_version, MYSQL_SERVER_VERSION);
  myisam_recover_options_str= sql_mode_str= "OFF";
  my_bind_addr = htonl(INADDR_ANY);
  threads.empty();
  thread_cache.empty();
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  key_caches.empty();
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  if (!get_or_create_key_cache(DEFAULT_KEY_CACHE_NAME,
                               strlen(DEFAULT_KEY_CACHE_NAME)))
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    exit(1);
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  /* Initialize structures that is used when processing options */
  replicate_rewrite_db.empty();
  replicate_do_db.empty();
  replicate_ignore_db.empty();
  binlog_do_db.empty();
  binlog_ignore_db.empty();

  /* Set directory paths */
  strmake(language, LANGUAGE, sizeof(language)-1);
  strmake(mysql_real_data_home, get_relative_path(DATADIR),
	  sizeof(mysql_real_data_home)-1);
  mysql_data_home_buff[0]=FN_CURLIB;	// all paths are relative from here
  mysql_data_home_buff[1]=0;

  /* Replication parameters */
  master_user= (char*) "test";
  master_password= master_host= 0;
  master_info_file= (char*) "master.info",
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    relay_log_info_file= (char*) "relay-log.info";
  master_ssl_key= master_ssl_cert= master_ssl_ca= 
    master_ssl_capath= master_ssl_cipher= 0;
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  report_user= report_password = report_host= 0;	/* TO BE DELETED */
  opt_relay_logname= opt_relaylog_index_name= 0;

  /* Variables in libraries */
  charsets_dir= 0;
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  default_character_set_name= (char*) MYSQL_DEFAULT_CHARSET_NAME;
  default_collation_name= (char*) MYSQL_DEFAULT_COLLATION_NAME;
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  sys_charset_system.value= (char*) system_charset_info->csname;
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  /* Set default values for some option variables */
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  global_system_variables.table_type=   DB_TYPE_MYISAM;
  global_system_variables.tx_isolation= ISO_REPEATABLE_READ;
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  global_system_variables.select_limit= (ulonglong) HA_POS_ERROR;
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  max_system_variables.select_limit=    (ulonglong) HA_POS_ERROR;
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  global_system_variables.max_join_size= (ulonglong) HA_POS_ERROR;
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  max_system_variables.max_join_size=   (ulonglong) HA_POS_ERROR;
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  global_system_variables.old_passwords= 0;
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  /* Variables that depends on compile options */
#ifndef DBUG_OFF
  default_dbug_option=IF_WIN("d:t:i:O,\\mysqld.trace",
			     "d:t:i:o,/tmp/mysqld.trace");
#endif
  opt_error_log= IF_WIN(1,0);
#ifdef HAVE_BERKELEY_DB
  have_berkeley_db= SHOW_OPTION_YES;
#else
  have_berkeley_db= SHOW_OPTION_NO;
#endif
#ifdef HAVE_INNOBASE_DB
  have_innodb=SHOW_OPTION_YES;
#else
  have_innodb=SHOW_OPTION_NO;
#endif
#ifdef HAVE_ISAM
  have_isam=SHOW_OPTION_YES;
#else
  have_isam=SHOW_OPTION_NO;
#endif
#ifdef USE_RAID
  have_raid=SHOW_OPTION_YES;
#else
  have_raid=SHOW_OPTION_NO;
#endif
#ifdef HAVE_OPENSSL
  have_openssl=SHOW_OPTION_YES;
#else
  have_openssl=SHOW_OPTION_NO;
#endif
#ifdef HAVE_BROKEN_REALPATH
  have_symlink=SHOW_OPTION_NO;
#else
  have_symlink=SHOW_OPTION_YES;
#endif
#ifdef HAVE_QUERY_CACHE
  have_query_cache=SHOW_OPTION_YES;
#else
  have_query_cache=SHOW_OPTION_NO;
#endif
#ifdef HAVE_CRYPT
  have_crypt=SHOW_OPTION_YES;
#else
  have_crypt=SHOW_OPTION_NO;
#endif
#ifdef HAVE_COMPRESS
  SHOW_COMP_OPTION have_compress= SHOW_OPTION_YES;
#else
  SHOW_COMP_OPTION have_compress= SHOW_OPTION_NO;
#endif
#ifdef HAVE_LIBWRAP
  libwrapName= NullS;
#endif
#ifdef HAVE_OPENSSL
  des_key_file = 0;
  ssl_acceptor_fd= 0;
#endif
#ifdef HAVE_SMEM
  shared_memory_base_name= default_shared_memory_base_name;
#endif
#if !defined(my_pthread_setprio) && !defined(HAVE_PTHREAD_SETSCHEDPARAM)
  opt_specialflag |= SPECIAL_NO_PRIOR;
#endif

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#if defined(__WIN__) || defined(__NETWARE__)
  /* Allow Win32 and NetWare users to move MySQL anywhere */
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  {
    char prg_dev[LIBLEN];
    my_path(prg_dev,my_progname,"mysql/bin");
    strcat(prg_dev,"/../");			// Remove 'bin' to get base dir
    cleanup_dirname(mysql_home,prg_dev);
  }
#else
  const char *tmpenv;
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  if (!(tmpenv = getenv("MY_BASEDIR_VERSION")))
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    tmpenv = DEFAULT_MYSQL_HOME;
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  (void) strmake(mysql_home, tmpenv, sizeof(mysql_home)-1);
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#endif
}


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extern "C" my_bool
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get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
	       char *argument)
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{
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  switch(optid) {
  case '#':
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#ifndef DBUG_OFF
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    DBUG_PUSH(argument ? argument : default_dbug_option);
#endif
    opt_endinfo=1;				/* unireg: memory allocation */
    break;
  case 'a':
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    global_system_variables.sql_mode= fix_sql_mode(MODE_ANSI);
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    global_system_variables.tx_isolation= ISO_SERIALIZABLE;
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    break;
  case 'b':
    strmake(mysql_home,argument,sizeof(mysql_home)-1);
    break;
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  case 'C':
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    default_collation_name= 0;
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    break;
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  case 'l':
    opt_log=1;
    break;
  case 'h':
    strmake(mysql_real_data_home,argument, sizeof(mysql_real_data_home)-1);
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    /* Correct pointer set by my_getopt (for embedded library) */
    mysql_data_home= mysql_real_data_home;
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    break;
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  case 'u':
    if (!mysqld_user)
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      mysqld_user= argument;
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    else
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      fprintf(stderr, "Warning: Ignoring user change to '%s' because the user was set to '%s' earlier on the command line\n", argument, mysqld_user);
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    break;
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  case 'L':
    strmake(language, argument, sizeof(language)-1);
    break;
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#ifdef HAVE_REPLICATION
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  case OPT_SLAVE_SKIP_ERRORS:
    init_slave_skip_errors(argument);
    break;
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#endif
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  case OPT_SAFEMALLOC_MEM_LIMIT:
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#if !defined(DBUG_OFF) && defined(SAFEMALLOC)
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    sf_malloc_mem_limit = atoi(argument);
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#endif
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    break;
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#ifdef EMBEDDED_LIBRARY
  case OPT_MAX_ALLOWED_PACKET:
    max_allowed_packet= atoi(argument);
    break;
  case OPT_NET_BUFFER_LENGTH:
    net_buffer_length=  atoi(argument);
    break;
#endif
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#include <sslopt-case.h>
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  case 'V':
    print_version();
    exit(0);
  case 'T':
    test_flags= argument ? (uint) atoi(argument) : 0;
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    test_flags&= ~TEST_NO_THREADS;
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    opt_endinfo=1;
    break;
  case (int) OPT_BIG_TABLES:
    thd_startup_options|=OPTION_BIG_TABLES;
    break;
  case (int) OPT_ISAM_LOG:
    opt_myisam_log=1;
    break;
  case (int) OPT_UPDATE_LOG:
    opt_update_log=1;
    break;
  case (int) OPT_BIN_LOG:
    opt_bin_log=1;
    break;
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  case (int) OPT_ERROR_LOG_FILE:
    opt_error_log= 1;
    break;
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#ifdef HAVE_REPLICATION
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  case (int) OPT_INIT_RPL_ROLE:
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  {
    int role;
    if ((role=find_type(argument, &rpl_role_typelib, 2)) <= 0)
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    {
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      fprintf(stderr, "Unknown replication role: %s\n", argument);
      exit(1);
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    }
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    rpl_status = (role == 1) ?  RPL_AUTH_MASTER : RPL_IDLE_SLAVE;
    break;
  }
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  case (int)OPT_REPLICATE_IGNORE_DB:
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  {
    i_string *db = new i_string(argument);
    replicate_ignore_db.push_back(db);
    break;
  }
  case (int)OPT_REPLICATE_DO_DB:
  {
    i_string *db = new i_string(argument);
    replicate_do_db.push_back(db);
    break;
  }
  case (int)OPT_REPLICATE_REWRITE_DB:
  {
    char* key = argument,*p, *val;
5211

5212
    if (!(p= strstr(argument, "->")))
5213
    {
5214 5215 5216
      fprintf(stderr,
	      "Bad syntax in replicate-rewrite-db - missing '->'!\n");
      exit(1);
5217
    }
5218
    val= p--;
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5219
    while (my_isspace(mysqld_charset, *p) && p > argument)
5220 5221
      *p-- = 0;
    if (p == argument)
5222
    {
5223 5224 5225
      fprintf(stderr,
	      "Bad syntax in replicate-rewrite-db - empty FROM db!\n");
      exit(1);
5226
    }
5227 5228
    *val= 0;
    val+= 2;
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5229
    while (*val && my_isspace(mysqld_charset, *val))
5230 5231
      *val++;
    if (!*val)
5232
    {
5233 5234 5235
      fprintf(stderr,
	      "Bad syntax in replicate-rewrite-db - empty TO db!\n");
      exit(1);
5236 5237
    }

5238 5239 5240 5241 5242
    i_string_pair *db_pair = new i_string_pair(key, val);
    replicate_rewrite_db.push_back(db_pair);
    break;
  }

5243
  case (int)OPT_BINLOG_IGNORE_DB:
5244 5245 5246 5247 5248
  {
    i_string *db = new i_string(argument);
    binlog_ignore_db.push_back(db);
    break;
  }
5249
  case (int)OPT_BINLOG_DO_DB:
5250 5251 5252 5253 5254
  {
    i_string *db = new i_string(argument);
    binlog_do_db.push_back(db);
    break;
  }
5255
  case (int)OPT_REPLICATE_DO_TABLE:
5256 5257 5258 5259
  {
    if (!do_table_inited)
      init_table_rule_hash(&replicate_do_table, &do_table_inited);
    if (add_table_rule(&replicate_do_table, argument))
5260
    {
5261 5262
      fprintf(stderr, "Could not add do table rule '%s'!\n", argument);
      exit(1);
5263
    }
5264 5265 5266
    table_rules_on = 1;
    break;
  }
5267
  case (int)OPT_REPLICATE_WILD_DO_TABLE:
5268 5269 5270 5271 5272
  {
    if (!wild_do_table_inited)
      init_table_rule_array(&replicate_wild_do_table,
			    &wild_do_table_inited);
    if (add_wild_table_rule(&replicate_wild_do_table, argument))
5273
    {
5274 5275
      fprintf(stderr, "Could not add do table rule '%s'!\n", argument);
      exit(1);
5276
    }
5277 5278 5279
    table_rules_on = 1;
    break;
  }
5280
  case (int)OPT_REPLICATE_WILD_IGNORE_TABLE:
5281 5282 5283 5284 5285
  {
    if (!wild_ignore_table_inited)
      init_table_rule_array(&replicate_wild_ignore_table,
			    &wild_ignore_table_inited);
    if (add_wild_table_rule(&replicate_wild_ignore_table, argument))
5286
    {
5287 5288
      fprintf(stderr, "Could not add ignore table rule '%s'!\n", argument);
      exit(1);
5289
    }
5290 5291 5292
    table_rules_on = 1;
    break;
  }
5293
  case (int)OPT_REPLICATE_IGNORE_TABLE:
5294 5295 5296 5297
  {
    if (!ignore_table_inited)
      init_table_rule_hash(&replicate_ignore_table, &ignore_table_inited);
    if (add_table_rule(&replicate_ignore_table, argument))
5298
    {
5299 5300
      fprintf(stderr, "Could not add ignore table rule '%s'!\n", argument);
      exit(1);
5301
    }
5302 5303 5304
    table_rules_on = 1;
    break;
  }
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5305
#endif /* HAVE_REPLICATION */
5306 5307 5308
  case (int) OPT_SLOW_QUERY_LOG:
    opt_slow_log=1;
    break;
5309 5310
  case (int) OPT_SKIP_NEW:
    opt_specialflag|= SPECIAL_NO_NEW_FUNC;
5311
    delay_key_write_options= (uint) DELAY_KEY_WRITE_NONE;
5312 5313 5314
    myisam_concurrent_insert=0;
    myisam_recover_options= HA_RECOVER_NONE;
    my_use_symdir=0;
5315
    ha_open_options&= ~(HA_OPEN_ABORT_IF_CRASHED | HA_OPEN_DELAY_KEY_WRITE);
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5316
#ifdef HAVE_QUERY_CACHE
5317 5318 5319 5320 5321
    query_cache_size=0;
#endif
    break;
  case (int) OPT_SAFE:
    opt_specialflag|= SPECIAL_SAFE_MODE;
5322
    delay_key_write_options= (uint) DELAY_KEY_WRITE_NONE;
5323 5324
    myisam_recover_options= HA_RECOVER_DEFAULT;
    ha_open_options&= ~(HA_OPEN_DELAY_KEY_WRITE);
5325 5326 5327 5328 5329
    break;
  case (int) OPT_SKIP_PRIOR:
    opt_specialflag|= SPECIAL_NO_PRIOR;
    break;
  case (int) OPT_SKIP_LOCK:
5330
    opt_external_locking=0;
5331 5332 5333 5334 5335 5336 5337 5338 5339
    break;
  case (int) OPT_SKIP_HOST_CACHE:
    opt_specialflag|= SPECIAL_NO_HOST_CACHE;
    break;
  case (int) OPT_SKIP_RESOLVE:
    opt_specialflag|=SPECIAL_NO_RESOLVE;
    break;
  case (int) OPT_SKIP_NETWORKING:
    opt_disable_networking=1;
5340
    mysqld_port=0;
5341 5342 5343 5344 5345
    break;
  case (int) OPT_SKIP_SHOW_DB:
    opt_skip_show_db=1;
    opt_specialflag|=SPECIAL_SKIP_SHOW_DB;
    break;
5346
#ifdef ONE_THREAD
5347 5348
  case (int) OPT_ONE_THREAD:
    test_flags |= TEST_NO_THREADS;
5349
#endif
5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360
    break;
  case (int) OPT_WANT_CORE:
    test_flags |= TEST_CORE_ON_SIGNAL;
    break;
  case (int) OPT_SKIP_STACK_TRACE:
    test_flags|=TEST_NO_STACKTRACE;
    break;
  case (int) OPT_SKIP_SYMLINKS:
    my_use_symdir=0;
    break;
  case (int) OPT_BIND_ADDRESS:
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5361 5362
    if (!argument ||
	(my_bind_addr= (ulong) inet_addr(argument)) == INADDR_NONE)
5363 5364
    {
      struct hostent *ent;
5365
      if (argument || argument[0])
5366
	ent=gethostbyname(argument);
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5367 5368
      else
      {
5369 5370
	char myhostname[255];
	if (gethostname(myhostname,sizeof(myhostname)) < 0)
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5371
	{
5372
	  sql_perror("Can't start server: cannot get my own hostname!");
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5373 5374
	  exit(1);
	}
5375
	ent=gethostbyname(myhostname);
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5376
      }
5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387
      if (!ent)
      {
	sql_perror("Can't start server: cannot resolve hostname!");
	exit(1);
      }
      my_bind_addr = (ulong) ((in_addr*)ent->h_addr_list[0])->s_addr;
    }
    break;
  case (int) OPT_PID_FILE:
    strmake(pidfile_name, argument, sizeof(pidfile_name)-1);
    break;
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5388
#ifdef __WIN__
5389 5390
  case (int) OPT_STANDALONE:		/* Dummy option for NT */
    break;
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5391
#endif
5392 5393 5394 5395
  case OPT_CONSOLE:
    if (opt_console)
      opt_error_log= 0;			// Force logs to stdout
    break;
5396
  case (int) OPT_FLUSH:
5397
#ifdef HAVE_ISAM
5398 5399 5400 5401 5402 5403 5404
    nisam_flush=1;
#endif
    myisam_flush=1;
    flush_time=0;			// No auto flush
    break;
  case OPT_LOW_PRIORITY_UPDATES:
    thr_upgraded_concurrent_insert_lock= TL_WRITE_LOW_PRIORITY;
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5405
    global_system_variables.low_priority_updates=1;
5406 5407 5408 5409 5410
    break;
  case OPT_BOOTSTRAP:
    opt_noacl=opt_bootstrap=1;
    break;
  case OPT_TABLE_TYPE:
5411 5412 5413
  {
    int type;
    if ((type=find_type(argument, &ha_table_typelib, 2)) <= 0)
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5414
    {
5415 5416
      fprintf(stderr,"Unknown table type: %s\n",argument);
      exit(1);
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5417
    }
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5418
    global_system_variables.table_type= type-1;
5419 5420
    break;
  }
5421 5422 5423
  case OPT_SERVER_ID:
    server_id_supplied = 1;
    break;
5424 5425 5426 5427
  case OPT_DELAY_KEY_WRITE_ALL:
    if (argument != disabled_my_option)
      argument= (char*) "ALL";
    /* Fall through */
5428
  case OPT_DELAY_KEY_WRITE:
5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442
    if (argument == disabled_my_option)
      delay_key_write_options= (uint) DELAY_KEY_WRITE_NONE;
    else if (! argument)
      delay_key_write_options= (uint) DELAY_KEY_WRITE_ON;
    else
    {
      int type;
      if ((type=find_type(argument, &delay_key_write_typelib, 2)) <= 0)
      {
	fprintf(stderr,"Unknown delay_key_write type: %s\n",argument);
	exit(1);
      }
      delay_key_write_options= (uint) type-1;
    }
5443 5444 5445 5446 5447 5448
    break;
  case OPT_CHARSETS_DIR:
    strmake(mysql_charsets_dir, argument, sizeof(mysql_charsets_dir)-1);
    charsets_dir = mysql_charsets_dir;
    break;
  case OPT_TX_ISOLATION:
5449 5450 5451
  {
    int type;
    if ((type=find_type(argument, &tx_isolation_typelib, 2)) <= 0)
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5452
    {
5453 5454
      fprintf(stderr,"Unknown transaction isolation type: %s\n",argument);
      exit(1);
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5455
    }
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5456
    global_system_variables.tx_isolation= (type-1);
5457 5458
    break;
  }
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5459
#ifdef HAVE_BERKELEY_DB
5460 5461 5462 5463 5464 5465 5466
  case OPT_BDB_NOSYNC:
    berkeley_env_flags|=DB_TXN_NOSYNC;
    break;
  case OPT_BDB_NO_RECOVER:
    berkeley_init_flags&= ~(DB_RECOVER);
    break;
  case OPT_BDB_LOCK:
5467 5468 5469 5470 5471
  {
    int type;
    if ((type=find_type(argument, &berkeley_lock_typelib, 2)) > 0)
      berkeley_lock_type=berkeley_lock_types[type-1];
    else
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5472
    {
5473
      int err;
5474 5475
      char *end;
      uint length= strlen(argument);
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5476 5477
      long value= my_strntol(&my_charset_latin1, argument, length, 10, &end, &err);
      if (test_if_int(argument,(uint) length, end, &my_charset_latin1))
5478
	berkeley_lock_scan_time= value;
unknown's avatar
unknown committed
5479 5480
      else
      {
5481 5482
	fprintf(stderr,"Unknown lock type: %s\n",argument);
	exit(1);
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5483 5484
      }
    }
5485 5486
    break;
  }
5487 5488 5489 5490
  case OPT_BDB_SHARED:
    berkeley_init_flags&= ~(DB_PRIVATE);
    berkeley_shared_data=1;
    break;
5491
#endif /* HAVE_BERKELEY_DB */
5492
  case OPT_BDB:
5493
#ifdef HAVE_BERKELEY_DB
5494 5495 5496 5497 5498 5499 5500 5501 5502 5503
    if (opt_bdb)
    {
      berkeley_skip=0;
      have_berkeley_db=SHOW_OPTION_YES;
    }
    else
    {
      berkeley_skip=1;
      have_berkeley_db=SHOW_OPTION_DISABLED;
    }
5504 5505 5506 5507 5508 5509 5510
#endif
    break;
  case OPT_ISAM:
#ifdef HAVE_ISAM
    if (opt_isam)
    {
      isam_skip=0;
5511
      have_isam= SHOW_OPTION_YES;
5512 5513 5514 5515
    }
    else
    {
      isam_skip=1;
5516
      have_isam= SHOW_OPTION_DISABLED;
5517
    }
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5518
#endif
5519
    break;
5520
  case OPT_INNODB:
5521
#ifdef HAVE_INNOBASE_DB
5522 5523 5524 5525 5526 5527 5528 5529 5530 5531
    if (opt_innodb)
    {
      innodb_skip=0;
      have_innodb=SHOW_OPTION_YES;
    }
    else
    {
      innodb_skip=1;
      have_innodb=SHOW_OPTION_DISABLED;
    }
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5532
#endif
5533 5534
    break;
  case OPT_INNODB_DATA_FILE_PATH:
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5535
#ifdef HAVE_INNOBASE_DB
5536
    innobase_data_file_path=argument;
5537
#endif
5538
    break;
5539
#ifdef HAVE_INNOBASE_DB
5540 5541 5542 5543 5544 5545
  case OPT_INNODB_LOG_ARCHIVE:
    innobase_log_archive= argument ? test(atoi(argument)) : 1;
    break;
  case OPT_INNODB_FAST_SHUTDOWN:
    innobase_fast_shutdown= argument ? test(atoi(argument)) : 1;
    break;
5546
#endif /* HAVE_INNOBASE_DB */
5547
  case OPT_MYISAM_RECOVER:
5548 5549
  {
    if (!argument || !argument[0])
5550
    {
5551 5552
      myisam_recover_options=    HA_RECOVER_DEFAULT;
      myisam_recover_options_str= myisam_recover_typelib.type_names[0];
5553
    }
5554
    else
5555
    {
5556 5557 5558
      myisam_recover_options_str=argument;
      if ((myisam_recover_options=
	   find_bit_type(argument, &myisam_recover_typelib)) == ~(ulong) 0)
5559
      {
5560
	fprintf(stderr, "Unknown option to myisam-recover: %s\n",argument);
5561 5562 5563
	exit(1);
      }
    }
5564 5565 5566 5567 5568
    ha_open_options|=HA_OPEN_ABORT_IF_CRASHED;
    break;
  }
  case OPT_SQL_MODE:
  {
5569 5570 5571
    sql_mode_str= argument;
    if ((global_system_variables.sql_mode=
         find_bit_type(argument, &sql_mode_typelib)) == ~(ulong) 0)
5572 5573 5574 5575
    {
      fprintf(stderr, "Unknown option to sql-mode: %s\n", argument);
      exit(1);
    }
5576 5577
    global_system_variables.sql_mode= fix_sql_mode(global_system_variables.
						   sql_mode);
5578
  }
5579 5580 5581 5582
  case OPT_MASTER_PASSWORD:
    master_password=argument;
    break;
  case OPT_SKIP_SAFEMALLOC:
5583
#ifdef SAFEMALLOC
5584
    sf_malloc_quick=1;
5585
#endif
5586
    break;
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5587
  }
5588 5589 5590
  return 0;
}

5591 5592

extern "C" gptr *
5593
mysql_getopt_value(const char *keyname, uint key_length,
5594 5595
		   const struct my_option *option)
{
5596 5597
  switch (option->id) {
  case OPT_KEY_BUFFER_SIZE:
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5598
  case OPT_KEY_CACHE_BLOCK_SIZE:
5599 5600
  case OPT_KEY_CACHE_DIVISION_LIMIT:
  case OPT_KEY_CACHE_AGE_THRESHOLD:
5601
  {
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5602
    KEY_CACHE_VAR *key_cache;
5603 5604
    if (!(key_cache= get_or_create_key_cache(keyname, key_length)))
      exit(1);
5605 5606 5607 5608 5609 5610 5611 5612 5613 5614
    switch (option->id) {
    case OPT_KEY_BUFFER_SIZE:
      return (gptr*) &key_cache->buff_size;
    case OPT_KEY_CACHE_BLOCK_SIZE:
      return (gptr*) &key_cache->block_size;
    case OPT_KEY_CACHE_DIVISION_LIMIT:
      return (gptr*) &key_cache->division_limit;
    case OPT_KEY_CACHE_AGE_THRESHOLD:
      return (gptr*) &key_cache->age_threshold;
    }
5615 5616
  }
  }
5617
 return option->value;
5618 5619
}

5620

5621 5622 5623 5624
static void get_options(int argc,char **argv)
{
  int ho_error;

5625
  my_getopt_register_get_addr(mysql_getopt_value);
5626
  if ((ho_error=handle_options(&argc, &argv, my_long_options, get_one_option)))
5627
    exit(ho_error);
5628 5629
  if (argc > 0)
  {
5630
    fprintf(stderr, "%s: Too many arguments (first extra is '%s').\nUse --help to get a list of available options\n", my_progname, *argv);
5631 5632
    exit(ho_error);
  }
5633

5634
  if (opt_help)
5635 5636 5637 5638
  {
    usage();
    exit(0);
  }
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5639
#if defined(HAVE_BROKEN_REALPATH)
5640 5641 5642 5643 5644 5645 5646 5647 5648 5649
  my_use_symdir=0;
  my_disable_symlinks=1;
  have_symlink=SHOW_OPTION_NO;
#else
  if (!my_use_symdir)
  {
    my_disable_symlinks=1;
    have_symlink=SHOW_OPTION_DISABLED;
  }
#endif
5650 5651 5652 5653 5654 5655
  if (opt_debugging)
  {
    /* Allow break with SIGINT, no core or stack trace */
    test_flags|= TEST_SIGINT | TEST_NO_STACKTRACE;
    test_flags&= ~TEST_CORE_ON_SIGNAL;
  }
5656 5657 5658
  /* Set global MyISAM variables from delay_key_write_options */
  fix_delay_key_write((THD*) 0, OPT_GLOBAL);

5659
#ifndef EMBEDDED_LIBRARY
5660 5661
  if (mysqld_chroot)
    set_root(mysqld_chroot);
5662
#endif
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5663
  fix_paths();
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5664

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5665 5666 5667 5668
  /*
    Set some global variables from the global_system_variables
    In most cases the global variables will not be used
  */
5669
  my_disable_locking= myisam_single_user= test(opt_external_locking == 0);
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5670
  my_default_record_cache_size=global_system_variables.read_buff_size;
5671
  myisam_max_temp_length=
5672
    (my_off_t) global_system_variables.myisam_max_sort_file_size;
5673
  myisam_max_extra_temp_length=
5674
    (my_off_t) global_system_variables.myisam_max_extra_sort_file_size;
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5675

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5676
  /* Set global variables based on startup options */
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5677
  myisam_block_size=(uint) 1 << my_bit_log2(opt_myisam_block_size);
5678 5679 5680
  table_alias_charset= (lower_case_table_names ?
			files_charset_info :
			&my_charset_bin);
5681 5682 5683 5684
  if (opt_short_log_format)
    opt_specialflag|= SPECIAL_SHORT_LOG_FORMAT;
  if (opt_log_queries_not_using_indexes)
    opt_specialflag|= SPECIAL_LOG_QUERIES_NOT_USING_INDEXES;
5685 5686 5687 5688 5689 5690 5691 5692

  if (init_global_datetime_format(TIMESTAMP_DATE,
				  &global_system_variables.date_format) ||
      init_global_datetime_format(TIMESTAMP_TIME,
				  &global_system_variables.time_format) ||
      init_global_datetime_format(TIMESTAMP_DATETIME,
				  &global_system_variables.datetime_format))
    exit(1);
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Merge  
unknown committed
5693
  
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5694 5695 5696 5697
  /* Set up default values for a key cache */
  KEY_CACHE_VAR *key_cache= &dflt_key_cache_var;
  dflt_key_cache_block_size= key_cache->block_size;
  dflt_key_buff_size= key_cache->buff_size;
5698 5699
  dflt_key_cache_division_limit= key_cache->division_limit;
  dflt_key_cache_age_threshold= key_cache->age_threshold;
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5700 5701 5702 5703 5704 5705
}


static char *get_relative_path(const char *path)
{
  if (test_if_hard_path(path) &&
5706
      is_prefix(path,DEFAULT_MYSQL_HOME) &&
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5707 5708
      strcmp(DEFAULT_MYSQL_HOME,FN_ROOTDIR))
  {
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5709
    path+=(uint) strlen(DEFAULT_MYSQL_HOME);
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5710 5711 5712 5713 5714 5715 5716
    while (*path == FN_LIBCHAR)
      path++;
  }
  return (char*) path;
}


5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738
/*
  Fix filename and replace extension where 'dir' is relative to
  mysql_real_data_home.
  Return 1 if len(path) > FN_REFLEN
*/

bool
fn_format_relative_to_data_home(my_string to, const char *name,
				const char *dir, const char *extension)
{
  char tmp_path[FN_REFLEN];
  if (!test_if_hard_path(dir))
  {
    strxnmov(tmp_path,sizeof(tmp_path)-1, mysql_real_data_home,
	     dir, NullS);
    dir=tmp_path;
  }
  return !fn_format(to, name, dir, extension,
		    MY_REPLACE_EXT | MY_UNPACK_FILENAME | MY_SAFE_PATH);
}


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5739 5740
static void fix_paths(void)
{
5741
  char buff[FN_REFLEN],*pos;
5742
  convert_dirname(mysql_home,mysql_home,NullS);
5743
  /* Resolve symlinks to allow 'mysql_home' to be a relative symlink */
5744
  my_realpath(mysql_home,mysql_home,MYF(0));
5745 5746 5747 5748 5749 5750 5751
  /* Ensure that mysql_home ends in FN_LIBCHAR */
  pos=strend(mysql_home);
  if (pos[-1] != FN_LIBCHAR)
  {
    pos[0]= FN_LIBCHAR;
    pos[1]= 0;
  }
5752 5753
  convert_dirname(mysql_real_data_home,mysql_real_data_home,NullS);
  convert_dirname(language,language,NullS);
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  (void) my_load_path(mysql_home,mysql_home,""); // Resolve current dir
  (void) my_load_path(mysql_real_data_home,mysql_real_data_home,mysql_home);
  (void) my_load_path(pidfile_name,pidfile_name,mysql_real_data_home);

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  char *sharedir=get_relative_path(SHAREDIR);
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  if (test_if_hard_path(sharedir))
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    strmake(buff,sharedir,sizeof(buff)-1);		/* purecov: tested */
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  else
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    strxnmov(buff,sizeof(buff)-1,mysql_home,sharedir,NullS);
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  convert_dirname(buff,buff,NullS);
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  (void) my_load_path(language,language,buff);

  /* If --character-sets-dir isn't given, use shared library dir */
  if (charsets_dir != mysql_charsets_dir)
  {
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    strxnmov(mysql_charsets_dir, sizeof(mysql_charsets_dir)-1, buff,
	     CHARSET_DIR, NullS);
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    charsets_dir=mysql_charsets_dir;
  }

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  if (init_tmpdir(&mysql_tmpdir_list, opt_mysql_tmpdir))
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    exit(1);
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#ifdef HAVE_REPLICATION
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  if (!slave_load_tmpdir)
  {
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    if (!(slave_load_tmpdir = (char*) my_strdup(mysql_tmpdir, MYF(MY_FAE))))
      exit(1);
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  }
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#endif /* HAVE_REPLICATION */
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}


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/*
  set how many open files we want to be able to handle

  SYNOPSIS
    set_maximum_open_files()  
    max_file_limit		Files to open

  NOTES
    The request may not fulfilled becasue of system limitations

  RETURN
    Files available to open
*/
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#ifdef SET_RLIMIT_NOFILE
static uint set_maximum_open_files(uint max_file_limit)
{
  struct rlimit rlimit;
  ulong old_cur;

  if (!getrlimit(RLIMIT_NOFILE,&rlimit))
  {
    old_cur=rlimit.rlim_cur;
    if (rlimit.rlim_cur >= max_file_limit)	// Nothing to do
      return rlimit.rlim_cur;			/* purecov: inspected */
    rlimit.rlim_cur=rlimit.rlim_max=max_file_limit;
    if (setrlimit(RLIMIT_NOFILE,&rlimit))
    {
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      if (global_system_variables.log_warnings)
	sql_print_error("Warning: setrlimit couldn't increase number of open files to more than %lu (request: %u)",
			old_cur, max_file_limit); /* purecov: inspected */
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      max_file_limit=old_cur;
    }
    else
    {
      (void) getrlimit(RLIMIT_NOFILE,&rlimit);
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      if ((uint) rlimit.rlim_cur != max_file_limit &&
	  global_system_variables.log_warnings)
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	sql_print_error("Warning: setrlimit returned ok, but didn't change limits. Max open files is %ld (request: %u)",
			(ulong) rlimit.rlim_cur,
			max_file_limit); /* purecov: inspected */
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      max_file_limit=rlimit.rlim_cur;
    }
  }
  return max_file_limit;
}
#endif

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#ifdef OS2
static uint set_maximum_open_files(uint max_file_limit)
{
   LONG     cbReqCount;
   ULONG    cbCurMaxFH, cbCurMaxFH0;
   APIRET   ulrc;

   // get current limit
   cbReqCount = 0;
   DosSetRelMaxFH( &cbReqCount, &cbCurMaxFH0);

   // set new limit
   cbReqCount = max_file_limit - cbCurMaxFH0;
   ulrc = DosSetRelMaxFH( &cbReqCount, &cbCurMaxFH);
   if (ulrc) {
      sql_print_error("Warning: DosSetRelMaxFH couldn't increase number of open files to more than %d",
         cbCurMaxFH0);
      cbCurMaxFH = cbCurMaxFH0;
   }

   return cbCurMaxFH;
}
#endif
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/*
  Return a bitfield from a string of substrings separated by ','
  returns ~(ulong) 0 on error.
*/
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static ulong find_bit_type(const char *x, TYPELIB *bit_lib)
{
  bool found_end;
  int  found_count;
  const char *end,*i,*j;
  const char **array, *pos;
  ulong found,found_int,bit;
  DBUG_ENTER("find_bit_type");
  DBUG_PRINT("enter",("x: '%s'",x));

  found=0;
  found_end= 0;
  pos=(my_string) x;
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  while (*pos == ' ') pos++;
  found_end= *pos == 0;
  while (!found_end)
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  {
    if (!*(end=strcend(pos,',')))		/* Let end point at fieldend */
    {
      while (end > pos && end[-1] == ' ')
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	end--;					/* Skip end-space */
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      found_end=1;
    }
    found_int=0; found_count=0;
    for (array=bit_lib->type_names, bit=1 ; (i= *array++) ; bit<<=1)
    {
      j=pos;
      while (j != end)
      {
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	if (my_toupper(mysqld_charset,*i++) !=
            my_toupper(mysqld_charset,*j++))
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	  goto skipp;
      }
      found_int=bit;
      if (! *i)
      {
	found_count=1;
	break;
      }
      else if (j != pos)			// Half field found
      {
	found_count++;				// Could be one of two values
      }
skipp: ;
    }
    if (found_count != 1)
      DBUG_RETURN(~(ulong) 0);				// No unique value
    found|=found_int;
    pos=end+1;
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  }
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  DBUG_PRINT("exit",("bit-field: %ld",(ulong) found));
  DBUG_RETURN(found);
} /* find_bit_type */


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/*****************************************************************************
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  Instantiate templates
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*****************************************************************************/

#ifdef __GNUC__
/* Used templates */
template class I_List<THD>;
template class I_List_iterator<THD>;
template class I_List<i_string>;
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template class I_List<i_string_pair>;
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template class I_List<NAMED_LIST>;
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FIX_GCC_LINKING_PROBLEM
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#endif