* rewrite 14-11-2008 vda
*/
-#include "libbb.h"
-
-int timeout_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int timeout_main(int argc UNUSED_PARAM, char **argv)
-{
- int signo;
- int status;
- int parent = 0;
- int timeout = 10;
- pid_t pid;
-#if !BB_MMU
- char *sv1, *sv2;
-#endif
- const char *opt_s = "TERM";
-
- /* -p option is not documented, it is needed to support NOMMU. */
-
- /* -t SECONDS; -p PARENT_PID */
- opt_complementary = "t+" USE_FOR_NOMMU(":p+");
- getopt32(argv, "s:t" USE_FOR_NOMMU(":p:"), &opt_s, &timeout, &parent);
- /*argv += optind; - no, wait for bb_daemonize_or_rexec! */
- signo = get_signum(opt_s);
- if (signo < 0)
- bb_error_msg_and_die("unknown signal '%s'", opt_s);
-
- /* We want to create a grandchild which will watch
- * and kill the grandparent. Other methods:
- * making parent watch child disrupts parent<->child link
- * (example: "tcpsvd 0.0.0.0 1234 timeout service_prog" -
- * it's better if service_prog is a child of tcpsvd!),
- * making child watch parent results in programs having
- * unexpected children. */
-
- if (parent) /* we were re-execed, already grandchild */
- goto grandchild;
- if (!argv[optind]) /* no PROG? */
- bb_show_usage();
-
- pid = vfork();
- if (pid < 0)
- bb_perror_msg_and_die("vfork");
-#if !BB_MMU
- sv1 = argv[optind];
- sv2 = argv[optind + 1];
-#endif
- if (pid == 0) {
- /* Child: spawn grandchild and exit */
- parent = getppid();
-#if !BB_MMU
- argv[optind] = xasprintf("-p%u", parent);
- argv[optind + 1] = NULL;
-#endif
- /* NB: exits with nonzero on error: */
- bb_daemonize_or_rexec(0, argv);
- /* Here we are grandchild. Sleep, then kill grandparent */
- grandchild:
- /* Just sleep(NUGE_NUM); kill(parent) may kill wrong process! */
- while (1) {
- sleep(1);
- if (--timeout <= 0)
- break;
- if (kill(parent, 0)) {
- /* process is gone */
- return EXIT_SUCCESS;
- }
- }
- kill(parent, signo);
- return EXIT_SUCCESS;
- }
-
- /* Parent */
- wait(&status); /* wait for child to die */
- /* Did intermediate [v]fork or exec fail? */
- if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
- return EXIT_FAILURE;
- /* Ok, exec a program as requested */
- argv += optind;
-#if !BB_MMU
- argv[0] = sv1;
- argv[1] = sv2;
-#endif
- BB_EXECVP(argv[0], argv);
- bb_perror_msg_and_die("exec '%s'", argv[0]);
-}
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
- * COPYING NOTES
- *
- * timeout.c -- a timeout handler for shell commands
- *
- * Copyright (C) 2005-6, Roberto A. Foglietta <me@roberto.foglietta.name>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- */
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
- * REVISION NOTES:
- * released 17-11-2005 by Roberto A. Foglietta
- * talarm 04-12-2005 by Roberto A. Foglietta
- * modified 05-12-2005 by Roberto A. Foglietta
- * sizerdct 06-12-2005 by Roberto A. Foglietta
- * splitszf 12-05-2006 by Roberto A. Foglietta
- * rewrite 14-11-2008 vda
- */
+//usage:#define timeout_trivial_usage
+//usage: "[-t SECS] [-s SIG] PROG ARGS"
+//usage:#define timeout_full_usage "\n\n"
+//usage: "Runs PROG. Sends SIG to it if it is not gone in SECS seconds.\n"
+//usage: "Defaults: SECS: 10, SIG: TERM."
#include "libbb.h"
/* -p option is not documented, it is needed to support NOMMU. */
/* -t SECONDS; -p PARENT_PID */
- opt_complementary = "t+" USE_FOR_NOMMU(":p+");
- getopt32(argv, "s:t" USE_FOR_NOMMU(":p:"), &opt_s, &timeout, &parent);
+ /* '+': stop at first non-option */
+ getopt32(argv, "+s:t:+" USE_FOR_NOMMU("p:+"), &opt_s, &timeout, &parent);
/*argv += optind; - no, wait for bb_daemonize_or_rexec! */
signo = get_signum(opt_s);
if (signo < 0)
if (!argv[optind]) /* no PROG? */
bb_show_usage();
- pid = vfork();
- if (pid < 0)
- bb_perror_msg_and_die("vfork");
#if !BB_MMU
sv1 = argv[optind];
sv2 = argv[optind + 1];
#endif
+ pid = xvfork();
if (pid == 0) {
/* Child: spawn grandchild and exit */
parent = getppid();
bb_daemonize_or_rexec(0, argv);
/* Here we are grandchild. Sleep, then kill grandparent */
grandchild:
- /* Just sleep(NUGE_NUM); kill(parent) may kill wrong process! */
+ /* Just sleep(HUGE_NUM); kill(parent) may kill wrong process! */
while (1) {
sleep(1);
if (--timeout <= 0)
argv[0] = sv1;
argv[1] = sv2;
#endif
- BB_EXECVP(argv[0], argv);
- bb_perror_msg_and_die("exec '%s'", argv[0]);
+ BB_EXECVP_or_die(argv);
}
projects / oweals / busybox.git / blobdiff