1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
25 #include <sys/prctl.h>
30 #include "exit-status.h"
32 #include "mount-setup.h"
33 #include "mount-util.h"
34 #include "path-util.h"
35 #include "process-util.h"
36 #include "signal-util.h"
40 /* Goes through /etc/fstab and remounts all API file systems, applying
41 * options that are in /etc/fstab that systemd might not have
44 int main(int argc
, char *argv
[]) {
45 _cleanup_hashmap_free_free_ Hashmap
*pids
= NULL
;
46 _cleanup_endmntent_
FILE *f
= NULL
;
51 log_error("This program takes no argument.");
55 log_set_target(LOG_TARGET_AUTO
);
56 log_parse_environment();
61 f
= setmntent("/etc/fstab", "r");
63 if (errno
== ENOENT
) {
68 r
= log_error_errno(errno
, "Failed to open /etc/fstab: %m");
72 pids
= hashmap_new(NULL
);
78 while ((me
= getmntent(f
))) {
83 /* Remount the root fs, /usr and all API VFS */
84 if (!mount_point_is_api(me
->mnt_dir
) &&
85 !path_equal(me
->mnt_dir
, "/") &&
86 !path_equal(me
->mnt_dir
, "/usr"))
89 log_debug("Remounting %s", me
->mnt_dir
);
93 r
= log_error_errno(errno
, "Failed to fork: %m");
100 (void) reset_all_signal_handlers();
101 (void) reset_signal_mask();
102 (void) prctl(PR_SET_PDEATHSIG
, SIGTERM
);
104 execv(MOUNT_PATH
, STRV_MAKE(MOUNT_PATH
, me
->mnt_dir
, "-o", "remount"));
106 log_error_errno(errno
, "Failed to execute " MOUNT_PATH
": %m");
112 s
= strdup(me
->mnt_dir
);
118 k
= hashmap_put(pids
, PID_TO_PTR(pid
), s
);
127 while (!hashmap_isempty(pids
)) {
131 if (waitid(P_ALL
, 0, &si
, WEXITED
) < 0) {
136 r
= log_error_errno(errno
, "waitid() failed: %m");
140 s
= hashmap_remove(pids
, PID_TO_PTR(si
.si_pid
));
142 if (!is_clean_exit(si
.si_code
, si
.si_status
, NULL
)) {
143 if (si
.si_code
== CLD_EXITED
)
144 log_error(MOUNT_PATH
" for %s exited with exit status %i.", s
, si
.si_status
);
146 log_error(MOUNT_PATH
" for %s terminated by signal %s.", s
, signal_to_string(si
.si_status
));
156 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;