Update for running gcc 3.x (mainly on HPUX)

Portability fixes for HPUX
Rename of CHECK_LOCK to IS_FREE_LOCK
Apply lower_case_table_names also to databases
Cleanup of describe code
Don't allow \ in database names


Build-tools/Do-compile:
  Added option --make-options
Docs/manual.texi:
  Changelog
  Added XOR, ^ and IS_FREE_LOCK() descriptions
acinclude.m4:
  Update for running gcc 3.x on HPUX
client/mysql.cc:
  Portability fix
client/mysqlbinlog.cc:
  Fix for using gcc 3.1
configure.in:
  Fix for using gcc 3.1
include/my_global.h:
  Fix for using gcc 3.1
include/my_pthread.h:
  Removed warning on HPUX
innobase/configure.in:
  Portability fix (for gcc 3.1 on HPUX)
innobase/ut/ut0ut.c:
  Portability fix (for gcc 3.1 on HPUX)
mysql-test/r/func_test.result:
  Test of new functions
mysql-test/r/rpl_get_lock.result:
  Test of new functions
mysql-test/t/func_test.test:
  Test of new functions
mysql-test/t/rpl_get_lock.test:
  Test of new functions
mysys/my_tempnam.c:
  Portability fix
sql/item_cmpfunc.cc:
  Added comments to Item_cond_xor.
  Fixed NULL handling for XOR
sql/item_create.cc:
  rename of CHECK_LOCK to IS_FREE_LOCK
sql/item_create.h:
  rename of CHECK_LOCK to IS_FREE_LOCK
sql/item_func.cc:
  Cleanup XOR handling
sql/item_func.h:
  rename of CHECK_LOCK to IS_FREE_LOCK
sql/lex.h:
  rename of CHECK_LOCK to IS_FREE_LOCK
sql/mysqld.cc:
  Moved chroot() to be exectued earlier.
sql/sql_db.cc:
  Apply lower_case_table_names also to databases
sql/sql_parse.cc:
  Apply lower_case_table_names also to databases
sql/sql_select.cc:
  Cleanup describe code (after Sinisa's patch for EXPLAIN + UNION)
sql/table.cc:
  Don't allow \ in database names

Build-tools/Do-compile

@@ -2,12 +2,12 @@
 
 use Getopt::Long;
 $opt_distribution=$opt_user=$opt_result=$opt_config_options=$opt_config_env="";
-$opt_dbd_options=$opt_perl_options=$opt_suffix="";
+$opt_dbd_options=$opt_perl_options=$opt_make_options=$opt_suffix="";
 $opt_tmp=$opt_version_suffix="";
 $opt_help=$opt_Information=$opt_delete=$opt_debug=$opt_stage=$opt_rsh_mail=$opt_no_test=$opt_no_perl=$opt_with_low_memory=$opt_fast_benchmark=$opt_static_client=$opt_static_server=$opt_static_perl=$opt_sur=$opt_with_small_disk=$opt_local_perl=$opt_tcpip=$opt_build_thread=$opt_no_mysqltest=$opt_use_old_distribution=$opt_enable_shared=$opt_no_crash_me=$opt_no_strip=0;
 $opt_innodb=$opt_bdb=0;
 
-GetOptions("Information","help","distribution=s","user=s","result=s","delete","no-test","no-mysqltest","perl-files=s","debug","config-options=s","config-env=s","stage=i","rsh-mail","with-low-memory","fast-benchmark","tmp=s","static-client","static-server","static-perl","no-perl","local-perl","perl-options=s","sur","with-small-disk","dbd-options=s","tcpip","suffix=s","build-thread=i","innodb","bdb","use-old-distribution","enable-shared","no-crash-me","no-strip","version-suffix=s", "with-other-libc=s") || usage();
+GetOptions("Information","help","distribution=s","user=s","result=s","delete","no-test","no-mysqltest","perl-files=s","debug","config-options=s","config-env=s","stage=i","rsh-mail","with-low-memory","fast-benchmark","tmp=s","static-client","static-server","static-perl","no-perl","local-perl","perl-options=s","make-options=s", "sur","with-small-disk","dbd-options=s","tcpip","suffix=s","build-thread=i","innodb","bdb","use-old-distribution","enable-shared","no-crash-me","no-strip","version-suffix=s", "with-other-libc=s") || usage();
 
 usage() if ($opt_help || $opt_Information);
 usage() if (!$opt_distribution);
@@ -172,8 +172,11 @@ if ($opt_stage <= 1)
 
 if ($opt_stage <= 2)
 {
+  my ($command);
   unlink($opt_distribution) if ($opt_delete && !$opt_use_old_distribution);
-  safe_system("$make");
+  $command=$make;
+  $command.= " $opt_make_options" if (defined($opt_make_options) && $opt_make_options ne "");
+  safe_system($command);
 }
 
 #
@@ -368,6 +371,9 @@ To set up the environment, like 'CC=cc CXX=gcc CXXFLAGS=-O3'
 --dbd-options 'options'
 Options for Makefile.PL when configuring msql-mysql-modules.
 
+--make-options 'options'
+Options to make after configure. (Like 'CXXLD=gcc')
+
 --version-suffix suffix
 Can be used to set a suffix (normally 'com' or '-max') for a distribution
 

Docs/manual.texi

@@ -5710,7 +5710,8 @@ FreeBSD 2.x with the included MIT-pthreads package.  @xref{FreeBSD}.
 @item
 FreeBSD 3.x and 4.x with native threads.  @xref{FreeBSD}.
 @item
-HP-UX 10.20 with the included MIT-pthreads package.  @xref{HP-UX 10.20}.
+HP-UX 10.20 with the DCE threads or the included MIT-pthreads package.
+@xref{HP-UX 10.20}.
 @item
 HP-UX 11.x with the native threads.  @xref{HP-UX 11.x}.
 @item
@@ -10396,25 +10397,15 @@ compiler, because @code{gcc} produces better code!
 We recommend using gcc 2.95 on HP-UX.  Don't use high optimisation
 flags (like -O6) as this may not be safe on HP-UX.
 
-Note that MIT-pthreads can't be compiled with the HP-UX compiler
-because it can't compile @code{.S} (assembler) files.
-
-The following configure line should work:
+The following configure line should work with gcc 2.95:
 
 @example
-CFLAGS="-DHPUX -I/opt/dce/include -fpic" \
-CXXFLAGS="-DHPUX -I/opt/dce/include -felide-constructors -fno-exceptions \
+CFLAGS="-I/opt/dce/include -fpic" \
+CXXFLAGS="-I/opt/dce/include -felide-constructors -fno-exceptions \
 -fno-rtti" CXX=gcc ./configure --with-pthread \
 --with-named-thread-libs='-ldce' --prefix=/usr/local/mysql --disable-shared
 @end example
 
-If you are compiling @code{gcc} 2.95 yourself, you should NOT link it with
-the DCE libraries (@code{libdce.a} or @code{libcma.a}) if you want to compile
-MySQL with MIT-pthreads.  If you mix the DCE and MIT-pthreads
-packages you will get a @code{mysqld} to which you cannot connect.  Remove
-the DCE libraries while you compile @code{gcc} 2.95!
-
-
 @node HP-UX 11.x, IBM-AIX, HP-UX 10.20, Other Unix Notes
 @subsubsection HP-UX Version 11.x Notes
 
@@ -28290,7 +28281,7 @@ in ANSI mode. @xref{ANSI mode}.
 
 @multitable @columnfractions .15 .15 .70
 @item @strong{Identifier} @tab @strong{Max length} @tab @strong{Allowed characters}
-@item Database @tab 64 @tab Any character that is allowed in a directory name except @samp{/} or @samp{.}.
+@item Database @tab 64 @tab Any character that is allowed in a directory name except @samp{/}, @samp{\} or @samp{.}.
 @item Table @tab 64 @tab Any character that is allowed in a file name, except @samp{/} or @samp{.}.
 @item Column @tab 64 @tab All characters.
 @item Alias @tab 255 @tab All characters.
@@ -30746,6 +30737,22 @@ mysql> SELECT 1 && 0;
 mysql> SELECT 1 && NULL;
         -> NULL
 @end example
+
+@findex XOR logical
+@item XOR
+Logical XOR. For non-@code{NULL} operands, evaluates to @code{1} if only one
+of the operators is non-zero.
+Produces @code{NULL} if either operand is @code{NULL}:
+@example
+mysql> SELECT 1 XOR 1;
+        -> 0
+mysql> SELECT 1 XOR 0;
+        -> 1
+mysql> SELECT 1 XOR NULL;
+        -> NULL
+@end example
+
+@code{a XOR b} is equal to @code{(a AND (NOT b)) OR ((NOT a) and b)}.
 @end table
 
 
@@ -32825,6 +32832,23 @@ mysql> SELECT 29 & 15;
 
 The result is an unsigned 64-bit integer.
 
+@findex ^ (bitwise XOR)
+@findex XOR, bitwise
+@item ^
+Bitwise XOR
+@example
+mysql> SELECT 1 ^ 1;
+        -> 0
+
+mysql> SELECT 1 ^ 0;
+        -> 1
+
+mysql> SELECT 11 ^ 3;
+        -> 8
+@end example
+
+The result is an unsigned 64-bit integer.
+
 @findex << (left shift)
 @item <<
 Shifts a longlong (@code{BIGINT}) number to the left:
@@ -33215,6 +33239,8 @@ string to perform cooperative advisory locking:
 @example
 mysql> SELECT GET_LOCK("lock1",10);
         -> 1
+mysql> SELECT IS_FREE_LOCK("lock2");
+        -> 1
 mysql> SELECT GET_LOCK("lock2",10);
         -> 1
 mysql> SELECT RELEASE_LOCK("lock2");
@@ -33239,6 +33265,12 @@ been released.
 The @code{DO} statement is convinient to use with @code{RELEASE_LOCK()}.
 @xref{DO}.
 
+@findex IS_FREE_LOCK()
+@item IS_FREE_LOCK(str)
+Checks if the the lock named @code{str} is free (not locked) to use.
+Returns @code{1} no one is using the lock, @code{0} if the lock is in use and
+@code{NULL} on errors (like wrong arguments).
+
 @findex BENCHMARK()
 @item BENCHMARK(count,expr)
 The @code{BENCHMARK()} function executes the expression @code{expr}
@@ -49578,44 +49610,15 @@ Our TODO section contains what we plan to have in 4.0. @xref{TODO MySQL 4.0}.
 
 @itemize @bullet
 @item
-Added binary XOR. 
-
-The one that with a query like :
-
-@example
-SELECT 11 ^ 3;
-@end example
-
-returns 8.
-
-Based on code contributed by Hartmut Holzgraefe @email{hartmut@@six.de}.
+Execute @code{chroot()}, if requested, directly after options has ben
+parsed.
 @item
-
-Added logical XOR.
-
-The one that with a query like:
-
-@example
-SELECT 1 XOR 1;
-@end example
-
-returns 0;
-
-Based on code contributed by Hartmut Holzgraefe @email{hartmut@@six.de}.
+Don't allow database names that contains @code{\}.
 @item
-Add function @code{CHECK_LOCK("lock_name")}. 
-This function returns a value indicating whether or not the lock with the
-given name is available. 
-It does not attempt to acquire a lock.
-It is used like this:
-
-@example
-SELECT CHECK_LOCK("some_lock");
-@end example
-
-@code{CHECK_LOCK()} returns 1 if the lock is available,
-0 if the lock is held by any process (including the current process),
-and @code{NULL} if an error occurs.
+@code{lower_case_table_names} now also affects created and dropped databases.
+@item
+Added operators @code{XOR} and @code{^} (bitwise @code{XOR}).
+Added function @code{IS_FREE_LOCK("lock_name")}.
 Based on code contributed by Hartmut Holzgraefe @email{hartmut@@six.de}.
 @item
 Removed @code{mysql_ssl_clear()}, as this was not needed.
@@ -50225,7 +50228,7 @@ Added @code{@@@@VERSION} as a synonym for @code{VERSION()}.
 @item
 @code{SHOW VARIABLES LIKE 'xxx'} is now case-insensitive.
 @item
-Fixed timeout for @code{GET_LOCK()} on HPUX with DCE threads.
+Fixed timeout for @code{GET_LOCK()} on HP-UX with DCE threads.
 @item
 Fixed memory allocation bug in the glibc library used to build Linux
 binaries, which caused mysqld to die in 'free()'.

acinclude.m4

@@ -1211,8 +1211,10 @@ changequote(, )dnl
 	   hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
 changequote([, ])dnl
 	      if test "$GCC" = yes; then
+	        if $CC -v 2>&1 | grep 'version 2.95' > /dev/null 2>&1; then
 		  ac_cv_sys_largefile_CFLAGS=-D__STDC_EXT__
 		fi
+	      fi
 	      ;;
 	   # IRIX 6.2 and later require cc -n32.
 changequote(, )dnl

client/mysql.cc

@@ -1269,12 +1269,10 @@ You can turn off this feature to get a quicker startup with -A\n\n");
 	/* for gnu readline */
 
 #ifndef HAVE_INDEX
-#ifdef	__cplusplus
 extern "C" {
-#endif
-extern char *index(const char *,pchar c),*rindex(const char *,pchar);
+extern char *index(const char *,int c),*rindex(const char *,int);
 
-char *index(const char *s,pchar c)
+char *index(const char *s,int c)
 {
   for (;;)
   {
@@ -1283,7 +1281,7 @@ char *index(const char *s,pchar c)
   }
 }
 
-char *rindex(const char *s,pchar c)
+char *rindex(const char *s,int c)
 {
   reg3 char *t;
 
@@ -1291,10 +1289,8 @@ char *rindex(const char *s,pchar c)
   do if (*s == (char) c) t = (char*) s; while (*s++);
   return (char*) t;
 }
-#ifdef	__cplusplus
 }
 #endif
-#endif
 #endif /* HAVE_READLINE */
 
 

client/mysqlbinlog.cc

@@ -552,3 +552,5 @@ int main(int argc, char** argv)
 #else
 #include "log_event.cc"
 #endif
+
+FIX_GCC_LINKING_PROBLEM

configure.in

@@ -318,7 +318,7 @@ then
   # mysqld doesn't use run-time-type-checking, so we disable it.
   CXXFLAGS="$CXXFLAGS -fno-implicit-templates -fno-exceptions -fno-rtti"
 
-  # If you are using 'gcc' 3.0 (not g++) to compile C++ programs,
+  # If you are using 'gcc' 3.0 (not g++) to compile C++ programs on Linux,
   # we will gets some problems when linking static programs.
   # The following code is used to fix this problem.
 
@@ -326,8 +326,7 @@ then
   then
     if $CXX -v 2>&1 | grep 'version 3' > /dev/null 2>&1
     then
-      CXXFLAGS="$CXXFLAGS -DUSE_MYSYS_NEW"
-      CXXLDFLAGS="$CXXLDFLAGS -Wl,--defsym -Wl,__cxa_pure_virtual=0"
+      CXXFLAGS="$CXXFLAGS -DUSE_MYSYS_NEW -DDEFINE_CXA_PURE_VIRTUAL"
     fi
   fi
 fi

include/my_global.h

@@ -150,6 +150,13 @@
 #define __LONG_MAX__ 2147483647
 #endif
 
+/* Fix problem when linking c++ programs with gcc 3.x */
+#ifdef DEFINE_CXA_PURE_VIRTUAL
+#define FIX_GCC_LINKING_PROBLEM extern "C" { int __cxa_pure_virtual() {} }
+#else
+#define FIX_GCC_LINKING_PROBLEM
+#endif
+
 /* egcs 1.1.2 has a problem with memcpy on Alpha */
 #if defined(__GNUC__) && defined(__alpha__) && ! (__GNUC__ > 2 || (__GNUC__ == 2 &&  __GNUC_MINOR__ >= 95))
 #define BAD_MEMCPY

include/my_pthread.h

@@ -429,6 +429,7 @@ struct tm *localtime_r(const time_t *clock, struct tm *res);
 #endif /* defined(__WIN__) */
 
 #if defined(HPUX) && !defined(DONT_REMAP_PTHREAD_FUNCTIONS)
+#undef pthread_cond_timedwait
 #define pthread_cond_timedwait(a,b,c) my_pthread_cond_timedwait((a),(b),(c))
 #define pthread_mutex_trylock(a) my_pthread_mutex_trylock((a)) 
 int my_pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,

innobase/configure.in

@@ -36,6 +36,7 @@ AC_PROG_RANLIB
 AC_PROG_INSTALL
 AC_CHECK_HEADERS(aio.h sched.h)
 AC_CHECK_SIZEOF(int, 4)
+AC_CHECK_SIZEOF(long, 4)
 AC_CHECK_FUNCS(sched_yield)
 AC_CHECK_FUNCS(fdatasync)
 #AC_CHECK_FUNCS(localtime_r)	# Already checked by MySQL

innobase/ut/ut0ut.c

@@ -27,11 +27,11 @@ ut_get_high32(
 			/* out: a >> 32 */
 	ulint	a)	/* in: ulint */
 {
-	if (sizeof(ulint) == 4) {
-		return(0);
-	}
-
+#if SIZEOF_LONG == 4
+	return 0;
+#else
 	return(a >> 32);
+#endif
 }
 
 /************************************************************

mysql-test/r/func_test.result

@@ -40,12 +40,12 @@ select 2 in (3,2,5,9,5,1),"monty" in ("david","monty","allan"), 1.2 in (1.4,1.2,
 select -1.49 or -1.49,0.6 or 0.6;
 -1.49 or -1.49	0.6 or 0.6
 1	1
-select 3 ^ 11;
-3 ^ 11
-8
-select 1 XOR 0;
-1 XOR 0
-1
+select 3 ^ 11, 1 ^ 1, 1 ^ 0, 1 ^ NULL, NULL ^ 1;
+3 ^ 11	1 ^ 1	1 ^ 0	1 ^ NULL	NULL ^ 1
+8	0	1	NULL	NULL
+select 1 XOR 1, 1 XOR 0, 0 XOR 1, 0 XOR 0, NULL XOR 1, 1 XOR NULL, 0 XOR NULL;
+1 XOR 1	1 XOR 0	0 XOR 1	0 XOR 0	NULL XOR 1	1 XOR NULL	0 XOR NULL
+0	1	1	0	NULL	NULL	NULL
 select 5 between 0 and 10 between 0 and 1,(5 between 0 and 10) between 0 and 1;
 5 between 0 and 10 between 0 and 1	(5 between 0 and 10) between 0 and 1
 0	1

mysql-test/r/rpl_get_lock.result

@@ -17,7 +17,13 @@ get_lock("lock",3)
 select * from t1;
 n
 1
-select check_lock("lock");
-check_lock("lock")
+select is_free_lock("lock");
+is_free_lock("lock")
+0
+select is_free_lock("lock2");
+is_free_lock("lock2")
 1
+select is_free_lock(NULL);
+is_free_lock(NULL)
+NULL
 drop table t1;

mysql-test/t/func_test.test

@@ -15,8 +15,9 @@ select 2 between 1 and 3, "monty" between "max" and "my",2=2 and "monty" between
 select 'b' between 'a' and 'c', 'B' between 'a' and 'c';
 select 2 in (3,2,5,9,5,1),"monty" in ("david","monty","allan"), 1.2 in (1.4,1.2,1.0);
 select -1.49 or -1.49,0.6 or 0.6;
-select 3 ^ 11;
-select 1 XOR 0;
+select 3 ^ 11, 1 ^ 1, 1 ^ 0, 1 ^ NULL, NULL ^ 1;
+select 1 XOR 1, 1 XOR 0, 0 XOR 1, 0 XOR 0, NULL XOR 1, 1 XOR NULL, 0 XOR NULL;
+
 #
 # Wrong usage of functions
 #

mysql-test/t/rpl_get_lock.test

@@ -21,8 +21,11 @@ connection slave;
 sync_with_master;
 select get_lock("lock",3);
 select * from t1;
+select is_free_lock("lock");
+# Check lock functions
+select is_free_lock("lock2");
+select is_free_lock(NULL);
 connection master1;
-select check_lock("lock");
 drop table t1;
 save_master_pos;
 connection slave;

mysys/my_tempnam.c

@@ -109,13 +109,13 @@ my_string my_tempnam(const char *dir, const char *pfx,
   old_env=(char**)environ;
   if (dir)
   {				/* Don't use TMPDIR if dir is given */
-    environ=(const char**)temp_env;		/* May give warning */
+    ((char**) environ)=(char**) temp_env;
     temp_env[0]=0;
   }
 #endif
   res=tempnam((char*) dir,(my_string) pfx); /* Use stand. dir with prefix */
 #ifndef OS2
-  environ=(const char**)old_env;		/* May give warning */
+  ((char**) environ)=(char**) old_env;
 #endif
   if (!res)
     DBUG_PRINT("error",("Got error: %d from tempnam",errno));

sql/item_cmpfunc.cc

@@ -1625,17 +1625,41 @@ bool Item_func_like::turboBM_matches(const char* text, int text_len) const
   }
 }
 
+
+/*
+  Make a logical XOR of the arguments.
+
+  SYNOPSIS
+    val_int()
+
+  DESCRIPTION
+  If either operator is NULL, return NULL.
+
+  NOTE
+    As we don't do any index optimization on XOR this is not going to be
+    very fast to use.
+
+  TODO (low priority)
+    Change this to be optimized as:
+      A XOR B   ->  (A) == 1 AND (B) <> 1) OR (A <> 1 AND (B) == 1)
+    To be able to do this, we would however first have to extend the MySQL
+    range optimizer to handle OR better.
+*/
+
 longlong Item_cond_xor::val_int()
 {
   List_iterator<Item> li(list);
   Item *item;
   int result=0;	
-  null_value=1;
+  null_value=0;
   while ((item=li++))
   {
-    result ^= (item->val_int() != 0);
-    if (!item->null_value)
-      null_value=0;
+    result^= (item->val_int() != 0);
+    if (item->null_value)
+    {
+      null_value=1;
+      return 0;
+    }
   }
-  return result;
+  return (longlong) result;
 }

sql/item_create.cc

@@ -429,9 +429,9 @@ Item *create_func_cast(Item *a, Item_cast cast_type)
   return res;
 }
 
-Item *create_func_check_lock(Item* a)
+Item *create_func_is_free_lock(Item* a)
 {
   current_thd->safe_to_cache_query=0;
-  return new Item_func_check_lock(a);
+  return new Item_func_is_free_lock(a);
 }
 

sql/item_create.h

@@ -91,4 +91,4 @@ Item *create_func_version(void);
 Item *create_func_weekday(Item* a);
 Item *create_load_file(Item* a);
 Item *create_wait_for_master_pos(Item* a, Item* b);
-Item *create_func_check_lock(Item* a);
+Item *create_func_is_free_lock(Item* a);

sql/item_func.cc

@@ -2260,18 +2260,9 @@ double Item_func_match::val()
 longlong Item_func_bit_xor::val_int()
 {
   ulonglong arg1= (ulonglong) args[0]->val_int();
-  if (args[0]->null_value)
-  {
-    null_value=1;
-    return 0;
-  }
   ulonglong arg2= (ulonglong) args[1]->val_int();
-  if (args[1]->null_value)
-  {
-    null_value=1;
+  if ((null_value= (args[0]->null_value || args[1]->null_value)))
     return 0;
-  }
-  null_value=0;
   return (longlong) (arg1 ^ arg2);
 }
 
@@ -2295,12 +2286,17 @@ Item *get_system_var(LEX_STRING name)
 
 /*
   Check a user level lock.
-  Returns 1: available
-  Returns 0: already taken
-  Returns NULL: Error
+
+  SYNOPSIS:
+    val_int()
+
+  RETURN VALUES
+    1		Available
+    0		Already taken
+    NULL	Error
 */
 
-longlong Item_func_check_lock::val_int()
+longlong Item_func_is_free_lock::val_int()
 {
   String *res=args[0]->val_str(&value);
   struct timespec abstime;
@@ -2309,23 +2305,17 @@ longlong Item_func_check_lock::val_int()
   int error=0;
 
   null_value=0;
-
-  if (/* check_global_access(thd,SUPER_ACL) ||*/ !res || !res->length())
+  if (!res || !res->length())
   {
     null_value=1;
     return 0;
   }
   
   pthread_mutex_lock(&LOCK_user_locks);
-
-  
   ull= (ULL*) hash_search(&hash_user_locks,(byte*) res->ptr(),
 			  res->length());
-
   pthread_mutex_unlock(&LOCK_user_locks);
-  
   if (!ull || !ull->locked)
     return 1;
-  
   return 0;
 }

sql/item_func.h

@@ -1000,11 +1000,11 @@ class Item_func_bit_xor : public Item_int_func
   void fix_length_xor_dec() { unsigned_flag=1; }
 };
 
-class Item_func_check_lock :public Item_int_func
+class Item_func_is_free_lock :public Item_int_func
 {
   String value;
 public:
-  Item_func_check_lock(Item *a) :Item_int_func(a) {}
+  Item_func_is_free_lock(Item *a) :Item_int_func(a) {}
   longlong val_int();
   const char *func_name() const { return "check_lock"; }
   void fix_length_and_dec() { decimals=0; max_length=1; maybe_null=1;}

sql/lex.h

@@ -413,7 +413,6 @@ static SYMBOL sql_functions[] = {
   { "BIT_LENGTH",	SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_bit_length)},
   { "CHAR_LENGTH",	SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_char_length)},
   { "CHARACTER_LENGTH", SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_char_length)},
-  { "CHECK_LOCK",	SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_check_lock)},
   { "COALESCE",		SYM(COALESCE),0,0},
   { "CONCAT",		SYM(CONCAT),0,0},
   { "CONCAT_WS",	SYM(CONCAT_WS),0,0},
@@ -458,6 +457,7 @@ static SYMBOL sql_functions[] = {
   { "INET_NTOA",	SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_inet_ntoa)},
   { "INSTR",		SYM(FUNC_ARG2),0,CREATE_FUNC(create_func_instr)},
   { "ISNULL",		SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_isnull)},
+  { "IS_FREE_LOCK",	SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_is_free_lock)},
   { "LCASE",		SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_lcase)},
   { "LEAST",		SYM(LEAST_SYM),0,0},
   { "LENGTH",		SYM(FUNC_ARG1),0,CREATE_FUNC(create_func_length)},

sql/mysqld.cc

@@ -1014,8 +1014,6 @@ static void server_init(void)
       unireg_abort(1);
     }
   }
-  if (mysqld_chroot)
-    set_root(mysqld_chroot);
   set_user(mysqld_user);		// Works also with mysqld_user==NULL
 
 #ifdef __NT__
@@ -1838,7 +1836,7 @@ int main(int argc, char **argv)
   init_signals();
 
   if (set_default_charset_by_name(default_charset, MYF(MY_WME)))
-    exit( 1 );
+    exit(1);
   charsets_list = list_charsets(MYF(MY_COMPILED_SETS|MY_CONFIG_SETS));
 
 #ifdef HAVE_OPENSSL
@@ -1906,7 +1904,7 @@ int main(int argc, char **argv)
     unireg_abort(1);
 
   /*
-  ** We have enough space for fiddling with the argv, continue
+    We have enough space for fiddling with the argv, continue
   */
   umask(((~my_umask) & 0666));
   if (my_setwd(mysql_real_data_home,MYF(MY_WME)))
@@ -4430,6 +4428,8 @@ static void get_options(int argc,char **argv)
   if ((ho_error=handle_options(&argc, &argv, my_long_options, get_one_option)))
     exit(ho_error);
 
+  if (mysqld_chroot)
+    set_root(mysqld_chroot);
   fix_paths();
   default_table_type_name=ha_table_typelib.type_names[default_table_type-1];
   default_tx_isolation_name=tx_isolation_typelib.type_names[default_tx_isolation];

sql/sql_db.cc

@@ -344,6 +344,8 @@ bool mysql_change_db(THD *thd,const char *name)
     x_free(dbname);
     DBUG_RETURN(1);
   }
+  if (lower_case_table_names)
+    casedn_str(dbname);
   DBUG_PRINT("info",("Use database: %s", dbname));
   if (test_all_bits(thd->master_access,DB_ACLS))
     db_access=DB_ACLS;

sql/sql_parse.cc

@@ -1035,6 +1035,8 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
 	net_printf(&thd->net,ER_WRONG_DB_NAME, db ? db : "NULL");
 	break;
       }
+      if (lower_case_table_names)
+	casedn_str(db);
       if (check_access(thd,CREATE_ACL,db,0,1))
 	break;
       mysql_log.write(thd,command,packet);
@@ -1051,6 +1053,8 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
 	net_printf(&thd->net,ER_WRONG_DB_NAME, db ? db : "NULL");
 	break;
       }
+      if (lower_case_table_names)
+	casedn_str(db);
       if (thd->locked_tables || thd->active_transaction())
       {
 	send_error(&thd->net,ER_LOCK_OR_ACTIVE_TRANSACTION);
@@ -2239,6 +2243,8 @@ mysql_execute_command(void)
       net_printf(&thd->net,ER_WRONG_DB_NAME, lex->name);
       break;
     }
+    if (lower_case_table_names)
+      casedn_str(lex->name);
     if (check_access(thd,CREATE_ACL,lex->name,0,1))
       break;
     res=mysql_create_db(thd,lex->name,lex->create_info.options,0);
@@ -2251,6 +2257,8 @@ mysql_execute_command(void)
       net_printf(&thd->net,ER_WRONG_DB_NAME, lex->name);
       break;
     }
+    if (lower_case_table_names)
+      casedn_str(lex->name);
     if (check_access(thd,DROP_ACL,lex->name,0,1))
       break;
     if (thd->locked_tables || thd->active_transaction())

sql/table.cc

@@ -1078,7 +1078,8 @@ bool check_db_name(const char *name)
       }
     }
 #endif
-    if (*name == '/' || *name == FN_LIBCHAR || *name == FN_EXTCHAR)
+    if (*name == '/' || *name == '\\' || *name == FN_LIBCHAR ||
+	*name == FN_EXTCHAR)
       return 1;
     name++;
   }