mirror of
https://github.com/systemd/systemd.git
synced 2024-11-12 15:21:19 +03:00
151 lines
4.4 KiB
C
151 lines
4.4 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
|
|
|
|
/***
|
|
This file is part of systemd.
|
|
|
|
Copyright 2010 Lennart Poettering
|
|
|
|
systemd 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 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
***/
|
|
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/wait.h>
|
|
#include <mntent.h>
|
|
|
|
#include "log.h"
|
|
#include "util.h"
|
|
#include "set.h"
|
|
#include "mount-setup.h"
|
|
#include "exit-status.h"
|
|
|
|
/* Goes through /etc/fstab and remounts all API file systems, applying
|
|
* options that are in /etc/fstab that systemd might not have
|
|
* respected */
|
|
|
|
int main(int argc, char *argv[]) {
|
|
int ret = EXIT_FAILURE;
|
|
FILE *f = NULL;
|
|
struct mntent* me;
|
|
Hashmap *pids = NULL;
|
|
|
|
if (argc > 1) {
|
|
log_error("This program takes no argument.");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
|
|
log_parse_environment();
|
|
log_open();
|
|
|
|
umask(0022);
|
|
|
|
if (!(f = setmntent("/etc/fstab", "r"))) {
|
|
log_error("Failed to open /etc/fstab: %m");
|
|
goto finish;
|
|
}
|
|
|
|
if (!(pids = hashmap_new(trivial_hash_func, trivial_compare_func))) {
|
|
log_error("Failed to allocate set");
|
|
goto finish;
|
|
}
|
|
|
|
ret = EXIT_SUCCESS;
|
|
|
|
while ((me = getmntent(f))) {
|
|
pid_t pid;
|
|
int k;
|
|
char *s;
|
|
|
|
if (!mount_point_is_api(me->mnt_dir))
|
|
continue;
|
|
|
|
log_debug("Remounting %s", me->mnt_dir);
|
|
|
|
if ((pid = fork()) < 0) {
|
|
log_error("Failed to fork: %m");
|
|
ret = 1;
|
|
continue;
|
|
}
|
|
|
|
if (pid == 0) {
|
|
const char *arguments[5];
|
|
/* Child */
|
|
|
|
arguments[0] = "/bin/mount";
|
|
arguments[1] = me->mnt_dir;
|
|
arguments[2] = "-o";
|
|
arguments[3] = "remount";
|
|
arguments[4] = NULL;
|
|
|
|
execv("/bin/mount", (char **) arguments);
|
|
|
|
log_error("Failed to execute /bin/mount: %m");
|
|
_exit(EXIT_FAILURE);
|
|
}
|
|
|
|
/* Parent */
|
|
|
|
s = strdup(me->mnt_dir);
|
|
|
|
if ((k = hashmap_put(pids, UINT_TO_PTR(pid), s)) < 0) {
|
|
log_error("Failed to add PID to set: %s", strerror(-k));
|
|
ret = EXIT_FAILURE;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
while (!hashmap_isempty(pids)) {
|
|
siginfo_t si;
|
|
char *s;
|
|
|
|
zero(si);
|
|
if (waitid(P_ALL, 0, &si, WEXITED) < 0) {
|
|
|
|
if (errno == EINTR)
|
|
continue;
|
|
|
|
log_error("waitid() failed: %m");
|
|
ret = EXIT_FAILURE;
|
|
break;
|
|
}
|
|
|
|
if ((s = hashmap_remove(pids, UINT_TO_PTR(si.si_pid)))) {
|
|
if (!is_clean_exit(si.si_code, si.si_status)) {
|
|
if (si.si_code == CLD_EXITED)
|
|
log_error("/bin/mount for %s exited with exit status %i.", s, si.si_status);
|
|
else
|
|
log_error("/bin/mount for %s terminated by signal %s.", s, signal_to_string(si.si_status));
|
|
|
|
ret = EXIT_FAILURE;
|
|
}
|
|
|
|
free(s);
|
|
}
|
|
}
|
|
|
|
finish:
|
|
|
|
if (pids)
|
|
hashmap_free_free(pids);
|
|
|
|
if (f)
|
|
endmntent(f);
|
|
|
|
return ret;
|
|
}
|