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https://github.com/pygos/init.git
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86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* Copyright (C) 2018 - David Oberhollenzer
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "gcrond.h"
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int runjob(crontab_t *tab)
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{
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struct sigaction act;
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pid_t pid;
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exec_t *e;
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int ret;
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if (tab->exec == NULL)
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return 0;
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pid = fork();
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if (pid == -1) {
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perror("fork");
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return -1;
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}
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if (pid != 0)
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return 0;
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/* XXX: inside the child process */
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memset(&act, 0, sizeof(act));
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act.sa_handler = SIG_DFL;
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sigaction(SIGINT, &act, NULL);
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sigaction(SIGTERM, &act, NULL);
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sigaction(SIGHUP, &act, NULL);
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sigaction(SIGCHLD, &act, NULL);
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if (setup_tty(tab->ctty, tab->tty_truncate))
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exit(EXIT_FAILURE);
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if (tab->gid != 0) {
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if (setresgid(tab->gid, tab->gid, tab->gid)) {
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perror("setgid");
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exit(EXIT_FAILURE);
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}
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}
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if (tab->uid != 0) {
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if (setresuid(tab->uid, tab->uid, tab->uid)) {
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perror("setuid");
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exit(EXIT_FAILURE);
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}
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}
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if (tab->exec->next == NULL)
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argv_exec(tab->exec);
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for (e = tab->exec; e != NULL; e = e->next) {
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pid = fork();
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if (pid == -1) {
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perror("fork");
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exit(EXIT_FAILURE);
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}
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if (pid == 0)
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argv_exec(e);
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while (waitpid(pid, &ret, 0) != pid)
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;
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ret = WIFEXITED(ret) ? WEXITSTATUS(ret) : EXIT_FAILURE;
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if (ret != EXIT_SUCCESS)
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break;
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}
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exit(ret);
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}
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