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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* Copyright (C) 2018 - David Oberhollenzer
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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, see <https://www.gnu.org/licenses/>.
*/
#include "gcrond.h"
int runjob(crontab_t *tab)
{
struct sigaction act;
pid_t pid;
exec_t *e;
int ret;
if (tab->exec == NULL)
return 0;
pid = fork();
if (pid == -1) {
perror("fork");
return -1;
}
if (pid != 0)
return 0;
/* XXX: inside the child process */
memset(&act, 0, sizeof(act));
act.sa_handler = SIG_DFL;
sigaction(SIGINT, &act, NULL);
sigaction(SIGTERM, &act, NULL);
sigaction(SIGHUP, &act, NULL);
sigaction(SIGCHLD, &act, NULL);
if (setup_tty(tab->ctty, tab->tty_truncate))
exit(EXIT_FAILURE);
if (tab->gid != 0) {
if (setresgid(tab->gid, tab->gid, tab->gid)) {
perror("setgid");
exit(EXIT_FAILURE);
}
}
if (tab->uid != 0) {
if (setresuid(tab->uid, tab->uid, tab->uid)) {
perror("setuid");
exit(EXIT_FAILURE);
}
}
if (tab->exec->next == NULL)
argv_exec(tab->exec);
for (e = tab->exec; e != NULL; e = e->next) {
pid = fork();
if (pid == -1) {
perror("fork");
exit(EXIT_FAILURE);
}
if (pid == 0)
argv_exec(e);
while (waitpid(pid, &ret, 0) != pid)
;
ret = WIFEXITED(ret) ? WEXITSTATUS(ret) : EXIT_FAILURE;
if (ret != EXIT_SUCCESS)
break;
}
exit(ret);
}
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