0c69794138
These lines are generally out-of-date, incomplete and unnecessary. With SPDX and git repository much more accurate and fine grained information about licensing and authorship is available, hence let's drop the per-file copyright notice. Of course, removing copyright lines of others is problematic, hence this commit only removes my own lines and leaves all others untouched. It might be nicer if sooner or later those could go away too, making git the only and accurate source of authorship information.
132 lines
3.8 KiB
C
132 lines
3.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <errno.h>
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#include <mntent.h>
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#include <string.h>
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#include <sys/prctl.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include "exit-status.h"
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#include "log.h"
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#include "mount-setup.h"
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#include "mount-util.h"
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#include "path-util.h"
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#include "process-util.h"
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#include "signal-util.h"
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#include "strv.h"
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#include "util.h"
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/* Goes through /etc/fstab and remounts all API file systems, applying
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* options that are in /etc/fstab that systemd might not have
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* respected */
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int main(int argc, char *argv[]) {
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_cleanup_hashmap_free_free_ Hashmap *pids = NULL;
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_cleanup_endmntent_ FILE *f = NULL;
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struct mntent* me;
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int r;
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if (argc > 1) {
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log_error("This program takes no argument.");
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return EXIT_FAILURE;
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}
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log_set_target(LOG_TARGET_AUTO);
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log_parse_environment();
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log_open();
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umask(0022);
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f = setmntent("/etc/fstab", "re");
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if (!f) {
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if (errno == ENOENT) {
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r = 0;
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goto finish;
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}
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r = log_error_errno(errno, "Failed to open /etc/fstab: %m");
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goto finish;
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}
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pids = hashmap_new(NULL);
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if (!pids) {
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r = log_oom();
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goto finish;
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}
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while ((me = getmntent(f))) {
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pid_t pid;
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int k;
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char *s;
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/* Remount the root fs, /usr and all API VFS */
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if (!mount_point_is_api(me->mnt_dir) &&
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!path_equal(me->mnt_dir, "/") &&
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!path_equal(me->mnt_dir, "/usr"))
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continue;
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log_debug("Remounting %s", me->mnt_dir);
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r = safe_fork("(remount)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_LOG, &pid);
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if (r < 0)
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goto finish;
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if (r == 0) {
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/* Child */
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execv(MOUNT_PATH, STRV_MAKE(MOUNT_PATH, me->mnt_dir, "-o", "remount"));
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log_error_errno(errno, "Failed to execute " MOUNT_PATH ": %m");
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_exit(EXIT_FAILURE);
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}
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/* Parent */
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s = strdup(me->mnt_dir);
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if (!s) {
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r = log_oom();
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goto finish;
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}
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k = hashmap_put(pids, PID_TO_PTR(pid), s);
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if (k < 0) {
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free(s);
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r = log_oom();
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goto finish;
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}
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}
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r = 0;
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while (!hashmap_isempty(pids)) {
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siginfo_t si = {};
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char *s;
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if (waitid(P_ALL, 0, &si, WEXITED) < 0) {
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if (errno == EINTR)
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continue;
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r = log_error_errno(errno, "waitid() failed: %m");
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goto finish;
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}
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s = hashmap_remove(pids, PID_TO_PTR(si.si_pid));
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if (s) {
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if (!is_clean_exit(si.si_code, si.si_status, EXIT_CLEAN_COMMAND, NULL)) {
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if (si.si_code == CLD_EXITED)
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log_error(MOUNT_PATH " for %s exited with exit status %i.", s, si.si_status);
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else
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log_error(MOUNT_PATH " for %s terminated by signal %s.", s, signal_to_string(si.si_status));
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r = -ENOEXEC;
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}
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free(s);
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}
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}
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finish:
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return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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