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refactoring: daemonizing is now a function

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This commit is contained in:
Christian Kruse
2014-01-21 16:19:49 +01:00
parent 4496a0761e
commit 2e61d7b156
1 changed files with 46 additions and 38 deletions
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84
repmgrd.c
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@@ -144,6 +144,7 @@ static void terminate(int retval);
static void setup_event_handlers(void);
#endif
static void do_daemonize();
static void check_and_create_pid_file(const char *pid_file);
#define CloseConnections() \
@@ -217,44 +218,7 @@ main(int argc, char **argv)
if (daemonize)
{
pid_t pid = fork();
switch (pid)
{
case -1:
log_err("Error in fork(): %s\n", strerror(errno));
exit(ERR_SYS_FAILURE);
break;
case 0: /* child process */
pid = setsid();
if (pid == (pid_t)-1)
{
log_err("Error in setsid(): %s\n", strerror(errno));
exit(ERR_SYS_FAILURE);
}
/* ensure that we are no longer able to open a terminal */
pid = fork();
if(pid == -1) /* error case */
{
log_err("Error in fork(): %s\n", strerror(errno));
exit(ERR_SYS_FAILURE);
break;
}
if (pid != 0) /* parent process */
{
exit(0);
}
/* a child just flows along */
break;
default: /* parent process */
exit(0);
}
do_daemonize();
}
if (pid_file)
@@ -1356,6 +1320,50 @@ update_registration(void)
}
PQclear(res);
}
static void
do_daemonize()
{
pid_t pid = fork();
switch (pid)
{
case -1:
log_err("Error in fork(): %s\n", strerror(errno));
exit(ERR_SYS_FAILURE);
break;
case 0: /* child process */
pid = setsid();
if (pid == (pid_t)-1)
{
log_err("Error in setsid(): %s\n", strerror(errno));
exit(ERR_SYS_FAILURE);
}
/* ensure that we are no longer able to open a terminal */
pid = fork();
if(pid == -1) /* error case */
{
log_err("Error in fork(): %s\n", strerror(errno));
exit(ERR_SYS_FAILURE);
break;
}
if (pid != 0) /* parent process */
{
exit(0);
}
/* a child just flows along */
break;
default: /* parent process */
exit(0);
}
}
static void
check_and_create_pid_file(const char *pid_file)
{