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Commit 301cd963 authored by unknown's avatar unknown
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more work on mysqlmanager

parent a7f577cc
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Showing with 683 additions and 11 deletions
tools/managertest1.nc 0 → 100644
View file @ 301cd963
root secret
def_exec server /usr/sbin/mysqld --socket=/tmp/temp.sock --skip-grant --skip-net --datadir=/tmp
set_exec_con server root localhost /tmp/temp.sock
start_exec server 3
show_exec
stop_exec server 3
show_exec
start_exec server 3
show_exec
stop_exec server 3
show_exec
shutdown
tools/mysqlmanager.c
View file @ 301cd963
......@@ -35,23 +35,33 @@
#include <getopt.h>
#include <stdarg.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <errno.h>
#include <violite.h>
#include <my_pthread.h>
#define MANAGER_VERSION "1.0"
#define MANAGER_GREETING "MySQL Server Management Daemon v.1.0"
#define MANAGER_GREETING "MySQL Server Management Daemon v." ## \
MANAGER_VERSION
#define LOG_ERR 1
#define LOG_WARN 2
#define LOG_INFO 3
#define LOG_DEBUG 4
#define CHILD_START 1
#define CHILD_STOP 2
#ifndef MANAGER_PORT
#define MANAGER_PORT 23546
#endif
#ifndef MANAGER_CONNECT_RETRIES
#define MANAGER_CONNECT_RETRIES 5
#endif
#ifndef MANAGER_MAX_CMD_LEN
#define MANAGER_MAX_CMD_LEN 16384
#endif
......@@ -68,28 +78,50 @@
#define MAX_USER_NAME 16
#endif
#ifndef MANAGER_PW_FILE
#define MANAGER_PW_FILE "/etc/mysqlmanager.passwd"
#endif
#ifndef MAX_HOST
#define MAX_HOST 128
#endif
#ifndef MAX_LAUNCHER_MSG
#define MAX_LAUNCHER_MSG 256
#endif
/* Variable naming convention - if starts with manager_, either is set
directly by the user, or used closely in ocnjunction with a variable
set by the user
*/
#if defined(__i386__) && defined(HAVE_LINUXTHREADS)
#define DO_STACKTRACE 1
#endif
uint manager_port = MANAGER_PORT;
FILE* errfp;
const char* manager_log_file = MANAGER_LOG_FILE;
pthread_mutex_t lock_log,lock_shutdown,lock_exec_hash;
pthread_mutex_t lock_log,lock_shutdown,lock_exec_hash,lock_launch_thd;
pthread_cond_t cond_launch_thd;
pthread_t loop_th,launch_msg_th;
int manager_sock = -1;
uchar* stack_bottom=0;
struct sockaddr_in manager_addr;
ulong manager_bind_addr = INADDR_ANY;
int manager_back_log = MANAGER_BACK_LOG;
int in_shutdown = 0, shutdown_requested=0;
int manager_connect_retries=MANAGER_CONNECT_RETRIES;
const char* manager_greeting = MANAGER_GREETING;
uint manager_max_cmd_len = MANAGER_MAX_CMD_LEN;
const char* manager_pw_file=MANAGER_PW_FILE;
int one_thread = 0; /* for debugging */
/* messages */
#define MAX_CLIENT_MSG_LEN 256
#define NET_BLOCK 2048
#define MD5_LEN 32
#define ESCAPE_CHAR '\\'
#define EOL_CHAR '\n'
......@@ -112,20 +144,52 @@ struct manager_thd
int fatal,finished;
};
HASH exec_hash;
struct manager_user
{
char user[MAX_USER_NAME];
char md5_pass[MD5_LEN];
int user_len;
const char* error;
};
HASH exec_hash,user_hash;
struct manager_exec* cur_launch_exec=0;
static struct manager_thd* manager_thd_new(Vio* vio);
static struct manager_exec* manager_exec_new(char* arg_start,char* arg_end);
static void manager_exec_print(Vio* vio,struct manager_exec* e);
static void manager_thd_free(struct manager_thd* thd);
static void manager_exec_free(void* e);
static void manager_exec_connect(struct manager_exec* e);
static int manager_exec_launch(struct manager_exec* e);
static struct manager_exec* manager_exec_by_pid(pid_t pid);
static struct manager_user* manager_user_new(char* buf);
static void manager_user_free(void* u);
static char* arg_strmov(char* dest, const char* src, int n);
static byte* get_exec_key(const byte* e, uint* len,
my_bool __attribute__((unused)) t);
static byte* get_user_key(const byte* u, uint* len,
my_bool __attribute__((unused)) t);
static uint tokenize_args(char* arg_start,char** arg_end);
static void init_arg_array(char* arg_str,char** args,uint arg_count);
typedef int (*manager_cmd_handler)(struct manager_thd*,char*,char*);
static void handle_child(int __attribute__((unused)) sig);
static void handle_sigpipe(int __attribute__((unused)) sig);
/* exec() in a threaded application is full of problems
to solve this, we fork off a launcher at the very start
and communicate with it through a pipe
*/
static void fork_launcher();
static void run_launcher_loop();
int to_launcher_pipe[2],from_launcher_pipe[2];
pid_t launcher_pid;
int in_segfault=0;
struct manager_cmd
{
......@@ -145,8 +209,17 @@ struct manager_exec
char con_user[16];
char con_pass[16];
int con_port;
pid_t pid;
int exit_code;
pthread_mutex_t lock;
pthread_cond_t cond;
pthread_t th;
char con_sock[FN_REFLEN];
char* data_buf;
char con_host[MAX_HOST];
MYSQL mysql;
char* data_buf;
int req_len;
int num_args;
};
#define HANDLE_DECL(com) static int handle_ ## com (struct manager_thd* thd,\
......@@ -162,6 +235,9 @@ HANDLE_NOARG_DECL(quit);
HANDLE_NOARG_DECL(help);
HANDLE_NOARG_DECL(shutdown);
HANDLE_DECL(def_exec);
HANDLE_DECL(start_exec);
HANDLE_DECL(stop_exec);
HANDLE_DECL(set_exec_con);
HANDLE_NOARG_DECL(show_exec);
struct manager_cmd commands[] =
......@@ -170,6 +246,12 @@ struct manager_cmd commands[] =
{"quit", "Finish session", handle_quit,4},
{"shutdown", "Shutdown this server", handle_shutdown,8},
{"def_exec", "Define executable entry", handle_def_exec,8},
{"start_exec", "Launch process defined by executable entry",
handle_start_exec,10},
{"stop_exec", "Stop process defined by executable entry",
handle_stop_exec,9},
{"set_exec_con", "Set connection parameters for executable entry",
handle_set_exec_con,12},
{"show_exec","Show defined executable entries",handle_show_exec,9},
{"help", "Print this message", handle_help,4},
{0,0,0,0}
......@@ -186,6 +268,8 @@ struct option long_options[] =
{"greeting", required_argument, 0, 'g'},
{"max-command-len",required_argument,0,'m'},
{"one-thread",no_argument,0,'d'},
{"connect-retries",required_argument,0,'C'},
{"password-file",required_argument,0,'p'},
{"version", no_argument, 0, 'V'},
{0, 0, 0, 0}
};
......@@ -203,8 +287,70 @@ static char* read_line(struct manager_thd* thd); /* returns pointer to end of
line
*/
static pthread_handler_decl(process_connection,arg);
static pthread_handler_decl(process_launcher_messages,
__attribute__((unused)) arg);
static int exec_line(struct manager_thd* thd,char* buf,char* buf_end);
#ifdef DO_STACKTRACE
void print_stacktrace();
#endif
static void handle_segfault(int sig)
{
if (in_segfault)
exit(1);
in_segfault=1;
fprintf(errfp,"Got fatal signal %d\n",sig);
#ifdef DO_STACKTRACE
print_stacktrace();
#endif
exit(1);
}
static void handle_sigpipe(int __attribute__((unused)) sig)
{
signal(SIGPIPE,handle_sigpipe);
}
#ifdef DO_STACKTRACE
#define MAX_DEPTH 25
#define SIGRETURN_FRAME_COUNT 1
void print_stacktrace()
{
uchar** fp;
int i;
LINT_INIT(fp);
fprintf(errfp,"Fatal errror, stacktrace follows:\n");
#ifdef __i386__
__asm__ __volatile__("movl %%ebp,%0" :"=r"(fp) :"r"(fp));
#endif
if (!fp)
{
fprintf(errfp,"frame points is NULL, cannot trace stack\n");
return;
}
for(i=0;i<MAX_DEPTH && fp<(uchar**)stack_bottom;i++)
{
#ifdef __i386__
uchar** new_fp = (uchar**)*fp;
fprintf(errfp, "%p\n", i == SIGRETURN_FRAME_COUNT ?
*(fp+17) : *(fp+1));
#endif /* __386__ */
if (new_fp <= fp )
{
fprintf(errfp, "New value of fp=%p failed sanity check,\
terminating stack trace!\n", new_fp);
return;
}
fp = new_fp;
}
fprintf(errfp,"Stack trace successful\n");
fflush(errfp);
}
#endif
static int exec_line(struct manager_thd* thd,char* buf,char* buf_end)
{
char* p=buf;
......@@ -264,12 +410,167 @@ HANDLE_NOARG_DECL(shutdown)
client_msg(thd->vio,MSG_OK,"Shutdown started, goodbye");
thd->finished=1;
shutdown_requested = 1;
if (!one_thread)
{
kill(launcher_pid,SIGTERM);
pthread_kill(loop_th,SIGTERM);
}
return 0;
}
HANDLE_DECL(set_exec_con)
{
int num_args;
const char* error=0;
struct manager_exec* e;
char* arg_p;
if ((num_args=tokenize_args(args_start,&args_end))<2)
{
error="Too few arguments";
goto err;
}
arg_p=args_start;
pthread_mutex_lock(&lock_exec_hash);
if (!(e=(struct manager_exec*)hash_search(&exec_hash,arg_p,
strlen(arg_p))))
{
pthread_mutex_unlock(&lock_exec_hash);
error="Exec definition entry does not exist";
goto err;
}
arg_p+=strlen(arg_p)+1;
arg_p+=(strnmov(e->con_user,arg_p,sizeof(e->con_user))-e->con_user)+1;
if (num_args >= 3)
{
arg_p+=(strnmov(e->con_host,arg_p,sizeof(e->con_host))-e->con_host)+1;
if (num_args == 4)
{
if (!(e->con_port=atoi(arg_p)))
strnmov(e->con_sock,arg_p,sizeof(e->con_sock));
else
e->con_sock[0]=0;
}
else
{
pthread_mutex_unlock(&lock_exec_hash);
error="Too many arguments";
goto err;
}
}
pthread_mutex_unlock(&lock_exec_hash);
client_msg(thd->vio,MSG_OK,"Entry updated");
return 0;
err:
client_msg(thd->vio,MSG_CLIENT_ERR,error);
return 1;
}
HANDLE_DECL(start_exec)
{
int num_args;
struct manager_exec* e;
int ident_len;
const char* error=0;
struct timespec t;
if ((num_args=tokenize_args(args_start,&args_end))<1)
{
error="Too few arguments";
goto err;
}
ident_len=strlen(args_start);
pthread_mutex_lock(&lock_exec_hash);
if (!(e=(struct manager_exec*)hash_search(&exec_hash,args_start,
ident_len)))
{
pthread_mutex_unlock(&lock_exec_hash);
error="Exec definition entry does not exist";
goto err;
}
pthread_mutex_unlock(&lock_exec_hash);
manager_exec_launch(e);
if ((error=e->error))
goto err;
pthread_mutex_lock(&e->lock);
t.tv_sec=time(0)+atoi(args_start+ident_len+1);
t.tv_nsec=0;
pthread_cond_timedwait(&e->cond,&e->lock,&t);
if (!e->pid)
{
pthread_mutex_unlock(&e->lock);
error="Process failed to start withing alotted time";
goto err;
}
mysql_close(&e->mysql);
manager_exec_connect(e);
error=e->error;
pthread_mutex_unlock(&e->lock);
if (error)
goto err;
client_msg(thd->vio,MSG_OK,"'%s' started",e->ident);
return 0;
err:
client_msg(thd->vio,MSG_CLIENT_ERR,error);
return 1;
}
HANDLE_DECL(stop_exec)
{
int num_args;
struct timespec abstime;
struct manager_exec* e;
int ident_len;
const char* error=0;
if ((num_args=tokenize_args(args_start,&args_end))<2)
{
error="Too few arguments";
goto err;
}
ident_len=strlen(args_start);
abstime.tv_sec=time(0)+atoi(args_start+1+ident_len);
abstime.tv_nsec=0;
pthread_mutex_lock(&lock_exec_hash);
if (!(e=(struct manager_exec*)hash_search(&exec_hash,args_start,
ident_len)))
{
pthread_mutex_unlock(&lock_exec_hash);
error="Exec definition entry does not exist";
goto err;
}
pthread_mutex_unlock(&lock_exec_hash);
pthread_mutex_lock(&e->lock);
e->th=pthread_self();
if (!e->pid)
{
e->th=0;
pthread_mutex_unlock(&e->lock);
error="Process not running";
goto err;
}
if (mysql_shutdown(&e->mysql))
{
e->th=0;
pthread_mutex_unlock(&e->lock);
error="Could not send shutdown command";
goto err;
}
pthread_cond_timedwait(&e->cond,&e->lock,&abstime);
if (e->pid)
error="Process failed to terminate within alotted time";
e->th=0;
pthread_mutex_unlock(&e->lock);
if (!error)
{
client_msg(thd->vio,MSG_OK,"'%s' terminated",e->ident);
return 0;
}
err:
client_msg(thd->vio,MSG_CLIENT_ERR,error);
return 1;
}
HANDLE_DECL(def_exec)
{
struct manager_exec* e=0;
struct manager_exec* e=0,*old_e;
const char* error=0;
if (!(e=manager_exec_new(args_start,args_end)))
{
......@@ -282,6 +583,13 @@ HANDLE_DECL(def_exec)
goto err;
}
pthread_mutex_lock(&lock_exec_hash);
if ((old_e=(struct manager_exec*)hash_search(&exec_hash,(byte*)e->ident,
e->ident_len)))
{
pthread_mutex_unlock(&lock_exec_hash);
error="Exec definition already exists";
goto err;
}
hash_insert(&exec_hash,(byte*)e);
pthread_mutex_unlock(&lock_exec_hash);
client_msg(thd->vio,MSG_OK,"Exec definition created");
......@@ -296,7 +604,8 @@ HANDLE_DECL(def_exec)
HANDLE_NOARG_DECL(show_exec)
{
uint i;
client_msg_pre(thd->vio,MSG_INFO,"Exec_def\tArguments");
client_msg_pre(thd->vio,MSG_INFO,"Exec_def\tPid\tExit_status\tCon_info\
\tArguments");
pthread_mutex_lock(&lock_exec_hash);
for (i=0;i<exec_hash.records;i++)
{
......@@ -308,6 +617,73 @@ HANDLE_NOARG_DECL(show_exec)
return 0;
}
static struct manager_exec* manager_exec_by_pid(pid_t pid)
{
struct manager_exec* e;
uint i;
pthread_mutex_lock(&lock_exec_hash);
for (i=0;i<exec_hash.records;i++)
{
e=(struct manager_exec*)hash_element(&exec_hash,i);
if (e->pid==pid)
{
pthread_mutex_unlock(&lock_exec_hash);
return e;
}
}
pthread_mutex_unlock(&lock_exec_hash);
return 0;
}
static void manager_exec_connect(struct manager_exec* e)
{
int i;
for (i=0;i<manager_connect_retries;i++)
{
if (mysql_real_connect(&e->mysql,e->con_host,e->con_user,e->con_pass,0,
e->con_port,e->con_sock,0))
return;
sleep(1);
}
e->error="Could not connect to MySQL server withing the number of tries";
}
static int manager_exec_launch(struct manager_exec* e)
{
if (one_thread)
{
pid_t tmp_pid;
switch ((tmp_pid=fork()))
{
case -1:
e->error="Cannot fork";
return 1;
case 0:
{
int err_code;
close(manager_sock);
err_code=execv(e->bin_path,e->args);
exit(err_code);
}
default:
e->pid=tmp_pid;
manager_exec_connect(e);
return 0;
}
}
else
{
if (write(to_launcher_pipe[1],&e->req_len,sizeof(int))!=sizeof(int) ||
write(to_launcher_pipe[1],&e->num_args,sizeof(int))!=sizeof(int) ||
write(to_launcher_pipe[1],e->data_buf,e->req_len)!=e->req_len)
{
e->error="Failed write request to launcher";
return 1;
}
}
return 0;
}
static char* arg_strmov(char* dest, const char* src, int n)
{
char* dest_end = dest+n-1;
......@@ -324,16 +700,42 @@ static char* arg_strmov(char* dest, const char* src, int n)
static void manager_exec_print(Vio* vio,struct manager_exec* e)
{
char buf[MAX_CLIENT_MSG_LEN];
char* p=buf,*buf_end=buf+sizeof(buf);
char* p=buf,*buf_end=buf+sizeof(buf)-1;
char** args=e->args;
p=arg_strmov(p,e->ident,(int)(buf_end-p)-2);
p=arg_strmov(p,e->ident,(int)(buf_end-p)-1);
*p++='\t';
if (p>buf_end-15)
goto end;
p=int10_to_str(e->pid,p,10);
*p++='\t';
p=int10_to_str(e->exit_code,p,10);
*p++='\t';
p=arg_strmov(p,e->con_user,(int)(buf_end-p)-1);
*p++='@';
if (p==buf_end)
goto end;
p=arg_strmov(p,e->con_host,(int)(buf_end-p)-11);
*p++=':';
if (p==buf_end-10)
goto end;
if (e->con_sock[0])
{
p=arg_strmov(p,e->con_sock,(int)(buf_end-p)-1);
}
else
{
p=int10_to_str(e->con_port,p,10);
}
*p++='\t';
for(;p<buf_end && *args;args++)
{
p=arg_strmov(p,*args,(int)(buf_end-p)-2);
p=arg_strmov(p,*args,(int)(buf_end-p)-1);
*p++='\t';
}
end:
*p=0;
client_msg_pre(vio,MSG_INFO,buf);
return;
......@@ -428,6 +830,64 @@ LOG_MSG_FUNC(debug,DEBUG)
inline void log_debug(char* __attribute__((unused)) fmt,...) {}
#endif
static pthread_handler_decl(process_launcher_messages,
__attribute__((unused)) arg)
{
my_thread_init();
for (;!in_shutdown;)
{
pid_t pid;
struct manager_exec* e;
char buf[MAX_LAUNCHER_MSG];
if (read(from_launcher_pipe[0],buf,MAX_LAUNCHER_MSG)<0)
{
log_err("error reading launcher message");
sleep(1);
continue;
}
switch (buf[0])
{
case CHILD_START:
{
char* ident=buf+1;
int ident_len=strlen(ident);
memcpy(&pid,ident+ident_len+1,sizeof(pid));
log_debug("process message - ident=%s,ident_len=%d,pid=%d",ident,
ident_len,pid);
pthread_mutex_lock(&lock_exec_hash);
log_debug("hash has %d records",exec_hash.records);
e=(struct manager_exec*)hash_search(&exec_hash,ident,ident_len);
if (e)
{
pthread_mutex_lock(&e->lock);
e->pid=pid;
pthread_cond_broadcast(&e->cond);
pthread_mutex_unlock(&e->lock);
}
pthread_mutex_unlock(&lock_exec_hash);
log_debug("unlocked mutex");
break;
}
case CHILD_STOP:
memcpy(&pid,buf+1,sizeof(pid));
e=manager_exec_by_pid(pid);
if (e)
{
pthread_mutex_lock(&e->lock);
e->pid=0;
memcpy(&e->exit_code,buf+1+sizeof(pid),sizeof(int));
pthread_cond_broadcast(&e->cond);
pthread_mutex_unlock(&e->lock);
}
break;
default:
log_err("Got invalid launcher message");
break;
}
}
return 0;
}
static pthread_handler_decl(process_connection,arg)
{
struct manager_thd* thd = (struct manager_thd*)arg;
......@@ -525,6 +985,23 @@ static char* read_line(struct manager_thd* thd)
return 0;
}
static void handle_child(int __attribute__((unused)) sig)
{
pid_t child;
int child_status;
for(;(child=waitpid(-1,&child_status,WNOHANG))>0;)
{
char msg_buf[1+sizeof(int)+sizeof(int)];
msg_buf[0]=CHILD_STOP;
memcpy(msg_buf+1,&child,sizeof(int));
memcpy(msg_buf+1+sizeof(int),&child_status,sizeof(int));
if (write(from_launcher_pipe[1],msg_buf,sizeof(msg_buf))!=sizeof(msg_buf))
log_err("launcher: error writing message on child exit");
}
signal(SIGCHLD,handle_child);
}
struct manager_thd* manager_thd_new(Vio* vio)
{
struct manager_thd* tmp;
......@@ -565,6 +1042,7 @@ static void clean_up()
log_info("Ended");
if (errfp != stderr)
fclose(errfp);
hash_free(&exec_hash);
}
static void print_version(void)
......@@ -593,13 +1071,16 @@ static void usage()
-B, --tcp-backlog==... Size of TCP/IP listen queue.\n\
-g, --greeting= Set greeting on connect \n\
-m, --max-command-len Maximum command length \n\
-d, --one-thread Use one thread ( for debugging) \n\
-C, --connect-retries Number of attempts to establish MySQL connection \n\
-m, --max-command-len Maximum command length \n\
-V, --version Output version information and exit.\n\n");
}
static int parse_args(int argc, char **argv)
{
int c, option_index = 0;
while ((c=getopt_long(argc,argv,"P:?#:Vl:b:B:g:m:d",
while ((c=getopt_long(argc,argv,"P:?#:Vl:b:B:g:m:dC:p:",
long_options,&option_index)) != EOF)
{
switch (c)
......@@ -610,6 +1091,12 @@ static int parse_args(int argc, char **argv)
case 'd':
one_thread=1;
break;
case 'p':
manager_pw_file=MANAGER_PW_FILE;
break;
case 'C':
manager_connect_retries=atoi(optarg);
break;
case 'P':
manager_port=atoi(optarg);
break;
......@@ -729,6 +1216,15 @@ static FILE* open_log_stream()
return fp;
}
static byte* get_user_key(const byte* u, uint* len,
my_bool __attribute__((unused)) t)
{
register const char* key;
key = ((struct manager_user*)u)->user;
*len = ((struct manager_user*)u)->user_len;
return (byte*)key;
}
static byte* get_exec_key(const byte* e, uint* len,
my_bool __attribute__((unused)) t)
{
......@@ -827,7 +1323,9 @@ static struct manager_exec* manager_exec_new(char* arg_start,char* arg_end)
}
tmp->data_buf=(char*)tmp+sizeof(*tmp);
memcpy(tmp->data_buf,arg_start,arg_len);
tmp->req_len=arg_len;
tmp->args=(char**)(tmp->data_buf+arg_len);
tmp->num_args=num_args;
tmp->ident=tmp->data_buf;
tmp->ident_len=strlen(tmp->ident);
first_arg=tmp->ident+tmp->ident_len+1;
......@@ -836,21 +1334,176 @@ static struct manager_exec* manager_exec_new(char* arg_start,char* arg_end)
tmp->con_pass[0]=0;
tmp->con_sock[0]=0;
tmp->con_port=MYSQL_PORT;
memcpy(tmp->con_host,"localhost",10);
tmp->bin_path=tmp->args[0];
tmp->pid=0;
tmp->exit_code=0;
tmp->th=0;
pthread_mutex_init(&tmp->lock,0);
pthread_cond_init(&tmp->cond,0);
mysql_init(&tmp->mysql);
tmp->error=0;
return tmp;
}
static void manager_exec_free(void* e)
{
mysql_close(&((struct manager_exec*)e)->mysql);
my_free(e,MYF(0));
}
static struct manager_user* manager_user_new(char* buf)
{
struct manager_user* tmp;
char* p,*user_end;
char c;
if (!(tmp=(struct manager_user*)my_malloc(sizeof(*tmp),MYF(0))))
return 0;
p=tmp->user;
user_end=p+MAX_USER_NAME-1;
for (;(c=*buf) && p<user_end;buf++)
{
if (c == ':')
{
*p=0;
tmp->user_len=p-tmp->user;
buf++;
break;
}
else
*p++=c;
}
if (!c)
tmp->error="Missing ':'";
if (p == user_end)
tmp->error="Username too long";
if (tmp->error)
return tmp;
if (strlen(buf) < MD5_LEN)
{
tmp->error="Invalid MD5 sum, too short";
return tmp;
}
memcpy(tmp->md5_pass,buf,MD5_LEN);
tmp->error=0;
return tmp;
}
static void manager_user_free(void* u)
{
my_free((gptr)u,MYF(0));
}
static void init_user_hash()
{
FILE* f;
char buf[80];
int line_num=1;
if (hash_init(&user_hash,1024,0,0,get_user_key,manager_user_free,MYF(0)))
die("Could not initialize user hash");
if (!(f=fopen(manager_pw_file,"r")))
die("Could not open password file '%s'", manager_pw_file);
for (;;line_num++)
{
struct manager_user* u;
if (!fgets(buf,sizeof(buf),f) || feof(f))
break;
if (buf[0] == '#')
continue;
if (!(u=manager_user_new(buf)))
die("Out of memory while reading user line");
if (u->error)
{
die("Error on line %d of '%s': %s",line_num,manager_pw_file, u->error);
}
else
{
hash_insert(&user_hash,(gptr)u);
}
}
fclose(f);
}
static void init_globals()
{
if (hash_init(&exec_hash,1024,0,0,get_exec_key,manager_exec_free,MYF(0)))
die("Exec hash initialization failed");
if (!one_thread)
{
fork_launcher();
if (pthread_create(&launch_msg_th,0,process_launcher_messages,0))
die("Could not start launcher message handler thread");
}
init_user_hash();
loop_th=pthread_self();
signal(SIGPIPE,handle_sigpipe);
}
static void run_launcher_loop()
{
for (;;)
{
int req_len,ident_len,num_args;
char* request_buf=0;
pid_t pid;
char* exec_path,*ident;
char** args=0;
if (read(to_launcher_pipe[0],&req_len,sizeof(int))!=sizeof(int) ||
read(to_launcher_pipe[0],&num_args,sizeof(int))!=sizeof(int) ||
!(request_buf=(char*)my_malloc(req_len+sizeof(pid)+2,MYF(0))) ||
!(args=(char**)my_malloc(num_args*sizeof(char*),MYF(0))) ||
read(to_launcher_pipe[0],request_buf+1,req_len)!=req_len)
{
log_err("launcher: Error reading request");
my_free((gptr)request_buf,MYF(MY_ALLOW_ZERO_PTR));
my_free((gptr)args,MYF(MY_ALLOW_ZERO_PTR));
sleep(1);
continue;
}
ident=request_buf+1;
ident_len=strlen(ident);
exec_path=ident+ident_len+1;
log_debug("num_args=%d,req_len=%d,ident=%s,ident_len=%d,exec_path=%s",
num_args,
req_len,ident,ident_len,exec_path);
init_arg_array(exec_path,args,num_args-1);
switch ((pid=fork()))
{
case -1:
log_err("launcher: cannot fork");
sleep(1);
break;
case 0:
if (execv(exec_path,args))
log_err("launcher: cannot exec %s",exec_path);
exit(1);
default:
request_buf[0]=CHILD_START;
memcpy(request_buf+ident_len+2,&pid,sizeof(pid));
if (write(from_launcher_pipe[1],request_buf,ident_len+2+sizeof(pid))<0)
log_err("launcher: error sending launch status report");
break;
}
my_free((gptr)request_buf,MYF(0));
my_free((gptr)args,MYF(0));
}
}
static void fork_launcher()
{
if (pipe(to_launcher_pipe) || pipe(from_launcher_pipe))
die("Could not create launcher pipes");
switch ((launcher_pid=fork()))
{
case 0:
signal(SIGCHLD,handle_child);
run_launcher_loop();
exit(0);
case -1: die("Could not fork the launcher");
default: return;
}
}
static int daemonize()
......@@ -877,12 +1530,19 @@ static int daemonize()
int main(int argc, char** argv)
{
char c;
stack_bottom=&c;
MY_INIT(argv[0]);
errfp = stderr;
parse_args(argc,argv);
pthread_mutex_init(&lock_log,0);
pthread_mutex_init(&lock_shutdown,0);
pthread_mutex_init(&lock_exec_hash,0);
pthread_mutex_init(&lock_launch_thd,0);
pthread_cond_init(&cond_launch_thd,0);
#ifdef DO_STACKTRACE
signal(SIGSEGV,handle_segfault);
#endif
if (one_thread)
{
init_globals();
......
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