static void
do_stop(void)
{
char what[1024];
struct pid_list *p;
int killed = 0;
do_procinit();
if (cmdname)
strcpy(what, cmdname);
else if (execname)
strcpy(what, execname);
else if (pidfile)
sprintf(what, "process in pidfile `%.200s'", pidfile);
else if (userspec)
sprintf(what, "process(es) owned by `%s'", userspec);
else
bb_error_msg_and_die ("internal error, please report");
if (!found) {
if (!quiet)
printf("no %s found; none killed.\n", what);
return;
}
for (p = found; p; p = p->next) {
if (kill(p->pid, signal_nr) == 0) {
p->pid = -p->pid;
killed++;
} else {
bb_perror_msg("warning: failed to kill %d", p->pid);
}
}
if (!quiet && killed) {
printf("stopped %s (pid", what);
for (p = found; p; p = p->next)
if(p->pid < 0)
printf(" %d", -p->pid);
printf(").\n");
}
}
int start_stop_daemon_main(int argc UNUSED_PARAM, char **argv)
{
unsigned opt;
char *signame;
char *startas;
char *chuid;
#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY
// char *retry_arg = NULL;
// int retries = -1;
char *opt_N;
#endif
INIT_G();
opt = GETOPT32(argv, "^"
"KSbqtma:n:s:u:c:x:p:"
IF_FEATURE_START_STOP_DAEMON_FANCY("ovN:R:")
/* -K or -S is required; they are mutually exclusive */
/* -p is required if -m is given */
/* -xpun (at least one) is required if -K is given */
/* -xa (at least one) is required if -S is given */
/* -q turns off -v */
"\0"
"K:S:K--S:S--K:m?p:K?xpun:S?xa"
IF_FEATURE_START_STOP_DAEMON_FANCY("q-v"),
LONGOPTS
&startas, &cmdname, &signame, &userspec, &chuid, &execname, &pidfile
IF_FEATURE_START_STOP_DAEMON_FANCY(,&opt_N)
/* We accept and ignore -R <param> / --retry <param> */
IF_FEATURE_START_STOP_DAEMON_FANCY(,NULL)
);
if (opt & OPT_s) {
signal_nr = get_signum(signame);
if (signal_nr < 0) bb_show_usage();
}
if (!(opt & OPT_a))
startas = execname;
if (!execname) /* in case -a is given and -x is not */
execname = startas;
if (execname) {
G.execname_sizeof = strlen(execname) + 1;
G.execname_cmpbuf = xmalloc(G.execname_sizeof + 1);
}
// IF_FEATURE_START_STOP_DAEMON_FANCY(
// if (retry_arg)
// retries = xatoi_positive(retry_arg);
// )
//argc -= optind;
argv += optind;
if (userspec) {
user_id = bb_strtou(userspec, NULL, 10);
if (errno)
user_id = xuname2uid(userspec);
}
/* Both start and stop need to know current processes */
do_procinit();
if (opt & CTX_STOP) {
int i = do_stop();
return (opt & OPT_OKNODO) ? 0 : (i <= 0);
}
if (G.found_procs) {
if (!QUIET)
printf("%s is already running\n%u\n", execname, (unsigned)G.found_procs->pid);
return !(opt & OPT_OKNODO);
}
#ifdef OLDER_VERSION_OF_X
if (execname)
xstat(execname, &G.execstat);
#endif
*--argv = startas;
if (opt & OPT_BACKGROUND) {
#if BB_MMU
bb_daemonize(DAEMON_DEVNULL_STDIO + DAEMON_CLOSE_EXTRA_FDS + DAEMON_DOUBLE_FORK);
/* DAEMON_DEVNULL_STDIO is superfluous -
* it's always done by bb_daemonize() */
#else
/* Daemons usually call bb_daemonize_or_rexec(), but SSD can do
* without: SSD is not itself a daemon, it _execs_ a daemon.
* The usual NOMMU problem of "child can't run indefinitely,
* it must exec" does not bite us: we exec anyway.
*/
pid_t pid = xvfork();
if (pid != 0) {
/* parent */
/* why _exit? the child may have changed the stack,
* so "return 0" may do bad things */
_exit(EXIT_SUCCESS);
}
/* Child */
setsid(); /* detach from controlling tty */
/* Redirect stdio to /dev/null, close extra FDs */
bb_daemon_helper(DAEMON_DEVNULL_STDIO + DAEMON_CLOSE_EXTRA_FDS);
#endif
}
if (opt & OPT_MAKEPID) {
/* User wants _us_ to make the pidfile */
write_pidfile(pidfile);
}
if (opt & OPT_c) {
struct bb_uidgid_t ugid;
parse_chown_usergroup_or_die(&ugid, chuid);
if (ugid.uid != (uid_t) -1L) {
struct passwd *pw = xgetpwuid(ugid.uid);
if (ugid.gid != (gid_t) -1L)
pw->pw_gid = ugid.gid;
/* initgroups, setgid, setuid: */
change_identity(pw);
} else if (ugid.gid != (gid_t) -1L) {
xsetgid(ugid.gid);
setgroups(1, &ugid.gid);
}
}
#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY
if (opt & OPT_NICELEVEL) {
/* Set process priority */
int prio = getpriority(PRIO_PROCESS, 0) + xatoi_range(opt_N, INT_MIN/2, INT_MAX/2);
if (setpriority(PRIO_PROCESS, 0, prio) < 0) {
bb_perror_msg_and_die("setpriority(%d)", prio);
}
}
#endif
execvp(startas, argv);
bb_perror_msg_and_die("can't execute '%s'", startas);
}
int
start_stop_daemon_main(int argc, char **argv)
{
unsigned long opt;
char *signame = NULL;
char *startas = NULL;
bb_applet_long_options = ssd_long_options;
/* Check required one context option was given */
bb_opt_complementally = "K:S:?:K--S:S--K";
opt = bb_getopt_ulflags(argc, argv, "KSbqma:n:s:u:x:p:",
&startas, &cmdname, &signame, &userspec, &execname, &pidfile);
quiet = opt & SSD_OPT_QUIET;
if (signame) {
signal_nr = bb_xgetlarg(signame, 10, 0, NSIG);
}
if (!execname && !pidfile && !userspec && !cmdname)
bb_error_msg_and_die ("need at least one of -x, -p, -u, or -n");
if (!startas)
startas = execname;
if ((opt & SSD_CTX_START) && !startas)
bb_error_msg_and_die ("-S needs -x or -a");
if ((opt & SSD_OPT_MAKEPID) && pidfile == NULL)
bb_error_msg_and_die ("-m needs -p");
argc -= optind;
argv += optind;
if (userspec && sscanf(userspec, "%d", &user_id) != 1)
user_id = bb_xgetpwnam(userspec);
if (opt & SSD_CTX_STOP) {
do_stop();
return EXIT_SUCCESS;
}
do_procinit();
if (found) {
if (!quiet)
printf("%s already running.\n%d\n", execname ,found->pid);
return EXIT_SUCCESS;
}
*--argv = startas;
if (opt & SSD_OPT_BACKGROUND) {
if (daemon(0, 0) == -1)
bb_perror_msg_and_die ("unable to fork");
setsid();
}
if (opt & SSD_OPT_MAKEPID) {
/* user wants _us_ to make the pidfile */
FILE *pidf = fopen(pidfile, "w");
pid_t pidt = getpid();
if (pidf == NULL)
bb_perror_msg_and_die("Unable to write pidfile '%s'", pidfile);
fprintf(pidf, "%d\n", pidt);
fclose(pidf);
}
execv(startas, argv);
bb_perror_msg_and_die ("unable to start %s", startas);
}