diff options
Diffstat (limited to 'miscutils/timeout.c')
| -rw-r--r-- | miscutils/timeout.c | 117 |
1 files changed, 2 insertions, 115 deletions
diff --git a/miscutils/timeout.c b/miscutils/timeout.c index 6a0a9a6..65a8cea 100644 --- a/miscutils/timeout.c +++ b/miscutils/timeout.c @@ -47,7 +47,8 @@ int timeout_main(int argc UNUSED_PARAM, char **argv) /* -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) @@ -66,127 +67,13 @@ int timeout_main(int argc UNUSED_PARAM, char **argv) 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 - */ - -#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(); |