supervise-daemon: multiple fixes
- Harden against dying by handling all signals that would terminate the program and adding --reexec support - factor the supervisor into its own function - fix test for whether we are already running
This commit is contained in:
William Hubbs
parent
35b1996704
commit
fdce4769f2
@ -47,6 +47,7 @@ bool rc_conf_yesno(const char *var);
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void env_filter(void);
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void env_config(void);
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int signal_setup(int sig, void (*handler)(int));
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int signal_setup_restart(int sig, void (*handler)(int));
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int svc_lock(const char *);
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int svc_unlock(const char *, int);
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pid_t exec_service(const char *, const char *);
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@ -217,6 +217,18 @@ signal_setup(int sig, void (*handler)(int))
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return sigaction(sig, &sa, NULL);
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}
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int
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signal_setup_restart(int sig, void (*handler)(int))
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{
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struct sigaction sa;
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memset(&sa, 0, sizeof (sa));
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sigemptyset(&sa.sa_mask);
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sa.sa_handler = handler;
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sa.sa_flags = SA_RESTART;
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return sigaction(sig, &sa, NULL);
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}
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int
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svc_lock(const char *applet)
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{
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@ -67,7 +67,7 @@ static struct pam_conv conv = { NULL, NULL};
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const char *applet = NULL;
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const char *extraopts = NULL;
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const char *getoptstring = "D:d:e:g:I:Kk:m:N:p:R:r:Su:1:2:" \
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const char *getoptstring = "D:d:e:g:I:Kk:m:N:p:R:r:Su:1:2:3" \
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getoptstring_COMMON;
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const struct option longopts[] = {
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{ "respawn-delay", 1, NULL, 'D'},
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@ -87,6 +87,7 @@ const struct option longopts[] = {
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{ "user", 1, NULL, 'u'},
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{ "stdout", 1, NULL, '1'},
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{ "stderr", 1, NULL, '2'},
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{ "reexec", 0, NULL, '3'},
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longopts_COMMON
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};
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const char * const longopts_help[] = {
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@ -107,6 +108,7 @@ const char * const longopts_help[] = {
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"Change the process user",
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"Redirect stdout to file",
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"Redirect stderr to file",
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"reexec (used internally)",
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longopts_help_COMMON
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};
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const char *usagestring = NULL;
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@ -127,6 +129,13 @@ static bool exiting = false;
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#ifdef TIOCNOTTY
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static int tty_fd = -1;
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#endif
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static pid_t child_pid;
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static int respawn_count = 0;
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static int respawn_delay = 0;
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static int respawn_max = 10;
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static int respawn_period = 5;
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static char *pidfile = NULL;
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static char *svcname = NULL;
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extern char **environ;
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@ -150,8 +159,71 @@ static void cleanup(void)
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free(changeuser);
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}
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static void child_process(char *exec, char **argv, char *svcname,
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int start_count)
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static void re_exec(void)
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{
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syslog(LOG_WARNING, "Re-executing supervise-daemon");
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execlp("supervise-daemon", "supervise-daemon", "--reexec", (char *) NULL);
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syslog(LOG_ERR, "Unable to execute supervise-daemon: %s",
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strerror(errno));
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exit(EXIT_FAILURE);
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}
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static void handle_signal(int sig)
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{
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int serrno = errno;
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syslog(LOG_WARNING, "caught signal %d", sig);
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if (sig == SIGTERM)
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exiting = true;
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/* Restore errno */
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errno = serrno;
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if (! exiting)
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re_exec();
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}
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static char * expand_home(const char *home, const char *path)
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{
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char *opath, *ppath, *p, *nh;
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size_t len;
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struct passwd *pw;
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if (!path || *path != '~')
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return xstrdup(path);
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opath = ppath = xstrdup(path);
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if (ppath[1] != '/' && ppath[1] != '\0') {
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p = strchr(ppath + 1, '/');
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if (p)
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*p = '\0';
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pw = getpwnam(ppath + 1);
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if (pw) {
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home = pw->pw_dir;
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ppath = p;
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if (ppath)
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*ppath = '/';
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} else
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home = NULL;
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} else
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ppath++;
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if (!home) {
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free(opath);
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return xstrdup(path);
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}
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if (!ppath) {
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free(opath);
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return xstrdup(home);
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}
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len = strlen(ppath) + strlen(home) + 1;
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nh = xmalloc(len);
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snprintf(nh, len, "%s%s", home, ppath);
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free(opath);
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return nh;
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}
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static void child_process(char *exec, char **argv)
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{
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RC_STRINGLIST *env_list;
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RC_STRING *env;
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@ -176,11 +248,13 @@ static void child_process(char *exec, char **argv, char *svcname,
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setsid();
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if (svcname) {
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start_time = time(NULL);
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from_time_t(start_time_string, start_time);
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start_time = time(NULL);
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from_time_t(start_time_string, start_time);
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rc_service_value_set(svcname, "start_time", start_time_string);
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sprintf(start_count_string, "%i", start_count);
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sprintf(start_count_string, "%i", respawn_count);
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rc_service_value_set(svcname, "start_count", start_count_string);
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sprintf(start_count_string, "%d", getpid());
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rc_service_value_set(svcname, "child_pid", start_count_string);
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}
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if (nicelevel) {
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@ -323,7 +397,7 @@ sprintf(start_count_string, "%i", start_count);
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*cmdline = '\0';
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c = argv;
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while (*c) {
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while (c && *c) {
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strcat(cmdline, *c);
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strcat(cmdline, " ");
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c++;
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@ -338,108 +412,152 @@ sprintf(start_count_string, "%i", start_count);
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eerrorx("%s: failed to exec `%s': %s", applet, exec,strerror(errno));
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}
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static void handle_signal(int sig)
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static void supervisor(char *exec, char **argv)
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{
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int serrno = errno;
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char signame[10] = { '\0' };
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FILE *fp;
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int i;
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int nkilled;
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time_t respawn_now= 0;
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time_t first_spawn= 0;
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switch (sig) {
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case SIGINT:
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snprintf(signame, sizeof(signame), "SIGINT");
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break;
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case SIGTERM:
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snprintf(signame, sizeof(signame), "SIGTERM");
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break;
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case SIGQUIT:
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snprintf(signame, sizeof(signame), "SIGQUIT");
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break;
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openlog(applet, LOG_PID, LOG_DAEMON);
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#ifndef RC_DEBUG
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signal_setup_restart(SIGHUP, handle_signal);
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signal_setup_restart(SIGINT, handle_signal);
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signal_setup_restart(SIGQUIT, handle_signal);
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signal_setup_restart(SIGILL, handle_signal);
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signal_setup_restart(SIGABRT, handle_signal);
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signal_setup_restart(SIGFPE, handle_signal);
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signal_setup_restart(SIGSEGV, handle_signal);
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signal_setup_restart(SIGPIPE, handle_signal);
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signal_setup_restart(SIGALRM, handle_signal);
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signal_setup(SIGTERM, handle_signal);
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signal_setup_restart(SIGUSR1, handle_signal);
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signal_setup_restart(SIGUSR2, handle_signal);
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signal_setup_restart(SIGBUS, handle_signal);
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signal_setup_restart(SIGPOLL, handle_signal);
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signal_setup_restart(SIGPROF, handle_signal);
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signal_setup_restart(SIGSYS, handle_signal);
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signal_setup_restart(SIGTRAP, handle_signal);
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signal_setup_restart(SIGVTALRM, handle_signal);
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signal_setup_restart(SIGXCPU, handle_signal);
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signal_setup_restart(SIGXFSZ, handle_signal);
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#ifdef SIGEMT
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signal_setup_restart(SIGEMT, handle_signal);
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#endif
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signal_setup_restart(SIGIO, handle_signal);
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signal_setup_restart(SIGPWR, handle_signal);
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signal_setup_restart(SIGUNUSED, handle_signal);
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#ifdef SIGRTMIN
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for (i = SIGRTMIN; i <= SIGRTMAX; i++)
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signal_setup_restart(i, handle_signal);
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#endif
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#endif
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fp = fopen(pidfile, "w");
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if (! fp)
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eerrorx("%s: fopen `%s': %s", applet, pidfile, strerror(errno));
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fprintf(fp, "%d\n", getpid());
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fclose(fp);
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if (svcname)
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rc_service_daemon_set(svcname, exec, (const char * const *) argv,
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pidfile, true);
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/* remove the controlling tty */
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#ifdef TIOCNOTTY
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ioctl(tty_fd, TIOCNOTTY, 0);
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close(tty_fd);
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#endif
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/*
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* Supervisor main loop
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*/
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i = 0;
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while (!exiting) {
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wait(&i);
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if (exiting) {
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signal_setup(SIGCHLD, SIG_IGN);
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syslog(LOG_INFO, "stopping %s, pid %d", exec, child_pid);
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nkilled = run_stop_schedule(applet, exec, NULL, child_pid, 0,
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false, false, true);
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if (nkilled > 0)
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syslog(LOG_INFO, "killed %d processes", nkilled);
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} else {
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sleep(respawn_delay);
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if (respawn_max > 0 && respawn_period > 0) {
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respawn_now = time(NULL);
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if (first_spawn == 0)
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first_spawn = respawn_now;
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if (respawn_now - first_spawn > respawn_period) {
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respawn_count = 0;
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first_spawn = 0;
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} else
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respawn_count++;
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if (respawn_count >= respawn_max) {
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syslog(LOG_WARNING,
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"respawned \"%s\" too many times, exiting", exec);
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exiting = true;
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continue;
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}
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}
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if (WIFEXITED(i))
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syslog(LOG_WARNING, "%s, pid %d, exited with return code %d",
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exec, child_pid, WEXITSTATUS(i));
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else if (WIFSIGNALED(i))
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syslog(LOG_WARNING, "%s, pid %d, terminated by signal %d",
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exec, child_pid, WTERMSIG(i));
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child_pid = fork();
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if (child_pid == -1)
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eerrorx("%s: fork: %s", applet, strerror(errno));
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if (child_pid == 0)
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child_process(exec, argv);
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}
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}
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if (*signame != 0) {
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syslog(LOG_INFO, "%s: caught signal %s, exiting", applet, signame);
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exiting = true;
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} else
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syslog(LOG_INFO, "%s: caught unknown signal %d", applet, sig);
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/* Restore errno */
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errno = serrno;
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}
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static char * expand_home(const char *home, const char *path)
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{
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char *opath, *ppath, *p, *nh;
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size_t len;
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struct passwd *pw;
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if (!path || *path != '~')
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return xstrdup(path);
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opath = ppath = xstrdup(path);
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if (ppath[1] != '/' && ppath[1] != '\0') {
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p = strchr(ppath + 1, '/');
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if (p)
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*p = '\0';
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pw = getpwnam(ppath + 1);
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if (pw) {
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home = pw->pw_dir;
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ppath = p;
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if (ppath)
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*ppath = '/';
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} else
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home = NULL;
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} else
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ppath++;
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if (!home) {
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free(opath);
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return xstrdup(path);
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if (pidfile && exists(pidfile))
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unlink(pidfile);
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if (svcname) {
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rc_service_daemon_set(svcname, exec, (const char *const *)argv,
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pidfile, false);
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rc_service_mark(svcname, RC_SERVICE_STOPPED);
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}
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if (!ppath) {
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free(opath);
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return xstrdup(home);
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}
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len = strlen(ppath) + strlen(home) + 1;
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nh = xmalloc(len);
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snprintf(nh, len, "%s%s", home, ppath);
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free(opath);
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return nh;
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exit(EXIT_SUCCESS);
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}
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int main(int argc, char **argv)
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{
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int opt;
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char **c;
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int x;
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bool start = false;
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bool stop = false;
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bool reexec = false;
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char *exec = NULL;
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char *pidfile = NULL;
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char *retry = NULL;
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int nkilled;
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int sig = SIGTERM;
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char *home = NULL;
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int tid = 0;
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pid_t child_pid, pid;
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char *svcname = getenv("RC_SVCNAME");
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pid_t pid;
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char *tmp;
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char *p;
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char *token;
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int i;
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int n;
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char exec_file[PATH_MAX];
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int respawn_count = 0;
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int respawn_delay = 0;
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int respawn_max = 10;
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int respawn_period = 5;
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time_t respawn_now= 0;
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time_t first_spawn= 0;
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char name[PATH_MAX];
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struct timespec ts;
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struct passwd *pw;
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struct group *gr;
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FILE *fp;
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mode_t numask = 022;
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int child_argc = 0;
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char **child_argv = NULL;
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char *str = NULL;
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applet = basename_c(argv[0]);
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atexit(cleanup);
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svcname = getenv("RC_SVCNAME");
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if ((tmp = getenv("SSD_NICELEVEL")))
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if (sscanf(tmp, "%d", &nicelevel) != 1)
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@ -493,8 +611,8 @@ int main(int argc, char **argv)
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case 'P': /* --respawn-period time */
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n = sscanf(optarg, "%d", &respawn_period);
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if (n != 1 || respawn_delay < 1)
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eerrorx("Invalid respawn-delay value '%s'", optarg);
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if (n != 1 || respawn_period < 1)
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eerrorx("Invalid respawn-period value '%s'", optarg);
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break;
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case 'S': /* --start */
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@ -590,11 +708,14 @@ int main(int argc, char **argv)
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case '2': /* --stderr /path/to/stderr.logfile */
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redirect_stderr = optarg;
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break;
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case '3': /* --reexec */
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reexec = true;
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break;
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case_RC_COMMON_GETOPT
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}
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if (!pidfile)
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if (!pidfile && !reexec)
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eerrorx("%s: --pidfile must be specified", applet);
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endpwent();
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@ -602,74 +723,158 @@ int main(int argc, char **argv)
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argv += optind;
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exec = *argv;
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if (start) {
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if (!exec)
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eerrorx("%s: nothing to start", applet);
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if (respawn_delay * respawn_max > respawn_period) {
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ewarn("%s: Please increase the value of --respawn-period to more "
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"than %d to avoid infinite respawning", applet,
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respawn_delay * respawn_max);
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}
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if (retry)
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parse_schedule(applet, retry, sig);
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else
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parse_schedule(applet, NULL, sig);
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}
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/* Expand ~ */
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if (ch_dir && *ch_dir == '~')
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ch_dir = expand_home(home, ch_dir);
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if (ch_root && *ch_root == '~')
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ch_root = expand_home(home, ch_root);
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if (exec) {
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if (*exec == '~')
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exec = expand_home(home, exec);
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/* Validate that the binary exists if we are starting */
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if (*exec == '/' || *exec == '.') {
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/* Full or relative path */
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if (ch_root)
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snprintf(exec_file, sizeof(exec_file),
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"%s/%s", ch_root, exec);
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else
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snprintf(exec_file, sizeof(exec_file),
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"%s", exec);
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} else {
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/* Something in $PATH */
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p = tmp = xstrdup(getenv("PATH"));
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*exec_file = '\0';
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while ((token = strsep(&p, ":"))) {
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umask(numask);
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if (reexec) {
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str = rc_service_value_get(svcname, "argc");
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sscanf(str, "%d", &child_argc);
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child_argv = xmalloc((child_argc + 1) * sizeof(char *));
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memset(child_argv, 0, (child_argc + 1) * sizeof(char *));
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for (x = 0; x < child_argc; x++) {
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sprintf(name, "argv_%d", x);
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str = rc_service_value_get(svcname, name);
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child_argv[x] = str;
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}
|
||||
free(str);
|
||||
str = rc_service_value_get(svcname, "child_pid");
|
||||
sscanf(str, "%d", &child_pid);
|
||||
free(str);
|
||||
exec = rc_service_value_get(svcname, "exec");
|
||||
pidfile = rc_service_value_get(svcname, "pidfile");
|
||||
retry = rc_service_value_get(svcname, "retry");
|
||||
if (retry) {
|
||||
parse_schedule(applet, retry, sig);
|
||||
rc_service_value_set(svcname, "retry", retry);
|
||||
} else
|
||||
parse_schedule(applet, NULL, sig);
|
||||
|
||||
str = rc_service_value_get(svcname, "respawn_delay");
|
||||
sscanf(str, "%d", &respawn_delay);
|
||||
str = rc_service_value_get(svcname, "respawn_max");
|
||||
sscanf(str, "%d", &respawn_max);
|
||||
supervisor(exec, child_argv);
|
||||
} else if (start) {
|
||||
if (exec) {
|
||||
if (*exec == '~')
|
||||
exec = expand_home(home, exec);
|
||||
|
||||
/* Validate that the binary exists if we are starting */
|
||||
if (*exec == '/' || *exec == '.') {
|
||||
/* Full or relative path */
|
||||
if (ch_root)
|
||||
snprintf(exec_file, sizeof(exec_file),
|
||||
"%s/%s/%s",
|
||||
ch_root, token, exec);
|
||||
"%s/%s", ch_root, exec);
|
||||
else
|
||||
snprintf(exec_file, sizeof(exec_file),
|
||||
"%s/%s", token, exec);
|
||||
if (exists(exec_file))
|
||||
break;
|
||||
"%s", exec);
|
||||
} else {
|
||||
/* Something in $PATH */
|
||||
p = tmp = xstrdup(getenv("PATH"));
|
||||
*exec_file = '\0';
|
||||
while ((token = strsep(&p, ":"))) {
|
||||
if (ch_root)
|
||||
snprintf(exec_file, sizeof(exec_file),
|
||||
"%s/%s/%s",
|
||||
ch_root, token, exec);
|
||||
else
|
||||
snprintf(exec_file, sizeof(exec_file),
|
||||
"%s/%s", token, exec);
|
||||
if (exists(exec_file))
|
||||
break;
|
||||
*exec_file = '\0';
|
||||
}
|
||||
free(tmp);
|
||||
}
|
||||
free(tmp);
|
||||
}
|
||||
}
|
||||
if (start && !exists(exec_file))
|
||||
eerrorx("%s: %s does not exist", applet,
|
||||
*exec_file ? exec_file : exec);
|
||||
if ( !exists(exec_file))
|
||||
eerrorx("%s: %s does not exist", applet,
|
||||
*exec_file ? exec_file : exec);
|
||||
} else
|
||||
eerrorx("%s: nothing to start", applet);
|
||||
|
||||
if (stop) {
|
||||
pid = get_pid(applet, pidfile);
|
||||
if (pid != -1)
|
||||
if (do_stop(applet, exec, (const char * const *)argv, pid, uid,
|
||||
0, false, true) > 0)
|
||||
eerrorx("%s: %s is already running", applet, exec);
|
||||
|
||||
if (respawn_delay * respawn_max > respawn_period)
|
||||
ewarn("%s: Please increase the value of --respawn-period to more "
|
||||
"than %d to avoid infinite respawning", applet,
|
||||
respawn_delay * respawn_max);
|
||||
|
||||
if (retry) {
|
||||
parse_schedule(applet, retry, sig);
|
||||
rc_service_value_set(svcname, "retry", retry);
|
||||
} else
|
||||
parse_schedule(applet, NULL, sig);
|
||||
|
||||
einfov("Detaching to start `%s'", exec);
|
||||
|
||||
/* Remove existing pidfile */
|
||||
if (pidfile)
|
||||
unlink(pidfile);
|
||||
|
||||
/* Make sure we can write a pid file */
|
||||
fp = fopen(pidfile, "w");
|
||||
if (! fp)
|
||||
eerrorx("%s: fopen `%s': %s", applet, pidfile, strerror(errno));
|
||||
fclose(fp);
|
||||
|
||||
rc_service_value_set(svcname, "pidfile", pidfile);
|
||||
sprintf(name, "%i", respawn_delay);
|
||||
rc_service_value_set(svcname, "respawn_delay", name);
|
||||
sprintf(name, "%i", respawn_max);
|
||||
rc_service_value_set(svcname, "respawn_max", name);
|
||||
sprintf(name, "%i", respawn_period);
|
||||
rc_service_value_set(svcname, "respawn_period", name);
|
||||
child_pid = fork();
|
||||
if (child_pid == -1)
|
||||
eerrorx("%s: fork: %s", applet, strerror(errno));
|
||||
if (child_pid != 0)
|
||||
/* first parent process, do nothing. */
|
||||
exit(EXIT_SUCCESS);
|
||||
#ifdef TIOCNOTTY
|
||||
tty_fd = open("/dev/tty", O_RDWR);
|
||||
#endif
|
||||
devnull_fd = open("/dev/null", O_RDWR);
|
||||
child_pid = fork();
|
||||
if (child_pid == -1)
|
||||
eerrorx("%s: fork: %s", applet, strerror(errno));
|
||||
else if (child_pid != 0) {
|
||||
c = argv;
|
||||
x = 0;
|
||||
while (c && *c) {
|
||||
snprintf(name, sizeof(name), "argv_%-d",x);
|
||||
rc_service_value_set(svcname, name, *c);
|
||||
x++;
|
||||
c++;
|
||||
}
|
||||
sprintf(name, "%d", x);
|
||||
rc_service_value_set(svcname, "argc", name);
|
||||
rc_service_value_set(svcname, "exec", exec);
|
||||
supervisor(exec, argv);
|
||||
} else
|
||||
child_process(exec, argv);
|
||||
} else if (stop) {
|
||||
pid = get_pid(applet, pidfile);
|
||||
if (pid != -1) {
|
||||
i = kill(pid, SIGTERM);
|
||||
if (i != 0)
|
||||
/* We failed to send the signal */
|
||||
exit(EXIT_FAILURE);
|
||||
|
||||
/* wait for the supervisor to go down */
|
||||
while (kill(pid, 0) == 0) {
|
||||
ts.tv_sec = 0;
|
||||
ts.tv_nsec = 1;
|
||||
nanosleep(&ts, NULL);
|
||||
ewarn("Unable to shut down the supervisor");
|
||||
else {
|
||||
/* wait for the supervisor to go down */
|
||||
while (kill(pid, 0) == 0) {
|
||||
ts.tv_sec = 0;
|
||||
ts.tv_nsec = 1;
|
||||
nanosleep(&ts, NULL);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -687,119 +892,4 @@ int main(int argc, char **argv)
|
||||
}
|
||||
exit(EXIT_SUCCESS);
|
||||
}
|
||||
|
||||
pid = get_pid(applet, pidfile);
|
||||
if (pid != -1)
|
||||
if (kill(pid, 0) == 0)
|
||||
eerrorx("%s: %s is already running", applet, exec);
|
||||
|
||||
einfov("Detaching to start `%s'", exec);
|
||||
eindentv();
|
||||
|
||||
/* Remove existing pidfile */
|
||||
if (pidfile)
|
||||
unlink(pidfile);
|
||||
|
||||
/*
|
||||
* Make sure we can write a pid file
|
||||
*/
|
||||
fp = fopen(pidfile, "w");
|
||||
if (! fp)
|
||||
eerrorx("%s: fopen `%s': %s", applet, pidfile, strerror(errno));
|
||||
fclose(fp);
|
||||
|
||||
child_pid = fork();
|
||||
if (child_pid == -1)
|
||||
eerrorx("%s: fork: %s", applet, strerror(errno));
|
||||
|
||||
/* first parent process, do nothing. */
|
||||
if (child_pid != 0)
|
||||
exit(EXIT_SUCCESS);
|
||||
|
||||
#ifdef TIOCNOTTY
|
||||
tty_fd = open("/dev/tty", O_RDWR);
|
||||
#endif
|
||||
devnull_fd = open("/dev/null", O_RDWR);
|
||||
child_pid = fork();
|
||||
if (child_pid == -1)
|
||||
eerrorx("%s: fork: %s", applet, strerror(errno));
|
||||
|
||||
if (child_pid != 0) {
|
||||
/* this is the supervisor */
|
||||
umask(numask);
|
||||
openlog(applet, LOG_PID, LOG_DAEMON);
|
||||
signal_setup(SIGTERM, handle_signal);
|
||||
|
||||
fp = fopen(pidfile, "w");
|
||||
if (! fp)
|
||||
eerrorx("%s: fopen `%s': %s", applet, pidfile, strerror(errno));
|
||||
fprintf(fp, "%d\n", getpid());
|
||||
fclose(fp);
|
||||
|
||||
if (svcname)
|
||||
rc_service_daemon_set(svcname, exec,
|
||||
(const char * const *) argv, pidfile, true);
|
||||
|
||||
/* remove the controlling tty */
|
||||
#ifdef TIOCNOTTY
|
||||
ioctl(tty_fd, TIOCNOTTY, 0);
|
||||
close(tty_fd);
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Supervisor main loop
|
||||
*/
|
||||
i = 0;
|
||||
while (!exiting) {
|
||||
wait(&i);
|
||||
if (exiting) {
|
||||
signal_setup(SIGCHLD, SIG_IGN);
|
||||
syslog(LOG_INFO, "stopping %s, pid %d", exec, child_pid);
|
||||
nkilled = run_stop_schedule(applet, exec, NULL, child_pid,
|
||||
0, false, false, true);
|
||||
if (nkilled > 0)
|
||||
syslog(LOG_INFO, "killed %d processes", nkilled);
|
||||
} else {
|
||||
sleep(respawn_delay);
|
||||
if (respawn_max > 0 && respawn_period > 0) {
|
||||
respawn_now = time(NULL);
|
||||
if (first_spawn == 0)
|
||||
first_spawn = respawn_now;
|
||||
if (respawn_now - first_spawn > respawn_period) {
|
||||
respawn_count = 0;
|
||||
first_spawn = 0;
|
||||
} else
|
||||
respawn_count++;
|
||||
if (respawn_count >= respawn_max) {
|
||||
syslog(LOG_WARNING, "respawned \"%s\" too many times, "
|
||||
"exiting", exec);
|
||||
exiting = true;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
if (WIFEXITED(i))
|
||||
syslog(LOG_WARNING, "%s, pid %d, exited with return code %d",
|
||||
exec, child_pid, WEXITSTATUS(i));
|
||||
else if (WIFSIGNALED(i))
|
||||
syslog(LOG_WARNING, "%s, pid %d, terminated by signal %d",
|
||||
exec, child_pid, WTERMSIG(i));
|
||||
child_pid = fork();
|
||||
if (child_pid == -1)
|
||||
eerrorx("%s: fork: %s", applet, strerror(errno));
|
||||
if (child_pid == 0)
|
||||
child_process(exec, argv, svcname, respawn_count);
|
||||
}
|
||||
}
|
||||
|
||||
if (pidfile && exists(pidfile))
|
||||
unlink(pidfile);
|
||||
if (svcname) {
|
||||
rc_service_daemon_set(svcname, exec,
|
||||
(const char *const *)argv,
|
||||
pidfile, false);
|
||||
rc_service_mark(svcname, RC_SERVICE_STOPPED);
|
||||
}
|
||||
exit(EXIT_SUCCESS);
|
||||
} else if (child_pid == 0)
|
||||
child_process(exec, argv, svcname, respawn_count);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user