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(FSCORE-189) Improve daemonize code 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9577 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Michael Jerris 2008-09-17 02:09:58 +00:00
parent 19811e4f08
commit 4f769f1aec
1 changed files with 56 additions and 5 deletions
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61
src/switch.c
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@ -194,6 +194,58 @@ void WINAPI service_main(DWORD numArgs, char **args)
SetServiceStatus(hStatus, &status);
}
#else
void daemonize(void) {
int fd;
pid_t pid;
switch (fork()) {
case 0:
break;
case -1:
fprintf(stderr, "Error Backgrounding (fork)! %d - %s\n", errno, strerror(errno));
exit(0);
break;
default:
exit(0);
}
if (setsid() < 0) {
fprintf(stderr, "Error Backgrounding (setsid)! %d - %s\n", errno, strerror(errno));
exit(0);
}
pid = fork();
switch (pid) {
case 0:
break;
case -1:
fprintf(stderr, "Error Backgrounding (fork2)! %d - %s\n", errno, strerror(errno));
exit(0);
break;
default:
fprintf(stderr, "%d Backgrounding.\n", (int) pid);
exit(0);
}
/* redirect std* to null */
fd = open("/dev/null", O_RDONLY);
if (fd != 0) {
dup2(fd, 0);
close(fd);
}
fd = open("/dev/null", O_WRONLY);
if (fd != 1) {
dup2(fd, 1);
close(fd);
}
fd = open("/dev/null", O_WRONLY);
if (fd != 2) {
dup2(fd, 2);
close(fd);
}
}
#endif
/* the main application entry point */
@ -501,9 +553,8 @@ int main(int argc, char *argv[])
#ifdef WIN32
FreeConsole();
#else
if (!nf && (pid = fork())) {
fprintf(stderr, "%d Backgrounding.\n", (int) pid);
exit(0);
if (!nf) {
daemonize();
}
#endif
}
@ -530,12 +581,12 @@ int main(int argc, char *argv[])
memset(pid_buffer, 0, sizeof(pid_buffer));
switch_snprintf(pid_path, sizeof(pid_path), "%s%s%s", SWITCH_GLOBAL_dirs.log_dir, SWITCH_PATH_SEPARATOR, pfile);
switch_snprintf(pid_buffer, sizeof(pid_buffer), "%d", pid);
pid_len = sizeof(pid_buffer);
pid_len = strlen(pid_buffer);
apr_pool_create(&pool, NULL);
if (switch_file_open(&fd,
pid_path,
SWITCH_FOPEN_WRITE | SWITCH_FOPEN_CREATE,
SWITCH_FOPEN_WRITE | SWITCH_FOPEN_CREATE | SWITCH_FOPEN_TRUNCATE,
SWITCH_FPROT_UREAD | SWITCH_FPROT_UWRITE,
pool) != SWITCH_STATUS_SUCCESS) {
fprintf(stderr, "Cannot open pid file %s.\n", pid_path);