fsck.c revision 059cb3858acd038ff2cef10a3a99119bf71a8fc6
3802a3d3d7af51ddff31943d5514382f01265770Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek This file is part of systemd.
5de0ccffcc4a5a946102a14e0b0e681d964e3225Zbigniew Jędrzejewski-Szmek Copyright 2010 Lennart Poettering
5de0ccffcc4a5a946102a14e0b0e681d964e3225Zbigniew Jędrzejewski-Szmek systemd is free software; you can redistribute it and/or modify it
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek under the terms of the GNU Lesser General Public License as published by
5de0ccffcc4a5a946102a14e0b0e681d964e3225Zbigniew Jędrzejewski-Szmek the Free Software Foundation; either version 2.1 of the License, or
5de0ccffcc4a5a946102a14e0b0e681d964e3225Zbigniew Jędrzejewski-Szmek (at your option) any later version.
5de0ccffcc4a5a946102a14e0b0e681d964e3225Zbigniew Jędrzejewski-Szmek systemd is distributed in the hope that it will be useful, but
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek WITHOUT ANY WARRANTY; without even the implied warranty of
5de0ccffcc4a5a946102a14e0b0e681d964e3225Zbigniew Jędrzejewski-Szmek MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5de0ccffcc4a5a946102a14e0b0e681d964e3225Zbigniew Jędrzejewski-Szmek Lesser General Public License for more details.
5de0ccffcc4a5a946102a14e0b0e681d964e3225Zbigniew Jędrzejewski-Szmek You should have received a copy of the GNU Lesser General Public License
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek along with systemd; If not, see <http://www.gnu.org/licenses/>.
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmekstatic bool arg_skip = false;
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmekstatic bool arg_force = false;
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmekstatic bool arg_show_progress = false;
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmekstatic void start_target(const char *target) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek r = bus_open_system_systemd(&bus);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_error("Failed to get D-Bus connection: %s", strerror(-r));
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_info("Running request %s/start/replace", target);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek /* Start these units only if we can replace base.target with it */
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek "org.freedesktop.systemd1.Manager",
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek "StartUnitReplace",
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek "sss", "basic.target", target, "replace");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek /* Don't print a warning if we aren't called during startup */
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB))
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_error("Failed to start unit: %s", bus_error_message(&error, -r));
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmekstatic int parse_proc_cmdline_item(const char *key, const char *value) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (streq(key, "fsck.mode") && value) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_warning("Invalid fsck.mode= parameter. Ignoring.");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek } else if (startswith(key, "fsck."))
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_warning("Invalid fsck parameter. Ignoring.");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek else if (streq(key, "fastboot") && !value) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line.");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek } else if (streq(key, "forcefsck") && !value) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line.");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmekstatic void test_files(void) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (access("/fastboot", F_OK) >= 0) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system.");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (access("/forcefsck", F_OK) >= 0) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system.");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (access("/run/systemd/show-status", F_OK) >= 0 || plymouth_running())
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmekstatic double percent(int pass, unsigned long cur, unsigned long max) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek /* Values stolen from e2fsck */
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering static const int pass_table[] = {
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0)
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek return (double) pass_table[pass-1] +
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek ((double) pass_table[pass] - (double) pass_table[pass-1]) *
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmekstatic int process_progress(int fd) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek _cleanup_fclose_ FILE *console = NULL, *f = NULL;
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek console = fopen("/dev/console", "we");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek _cleanup_free_ char *device = NULL;
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4)
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering /* Only show one progress counter at max */
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0)
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering /* Only update once every 50ms */
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m);
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering for (j = 0; j < (unsigned) clear; j++)
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering int i = 0, r = EXIT_FAILURE, q;
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering _cleanup_udev_unref_ struct udev *udev = NULL;
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt _cleanup_udev_device_unref_ struct udev_device *udev_device = NULL;
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering log_error("This program expects one or no arguments.");
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering parse_proc_cmdline(parse_proc_cmdline_item);
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering log_error("Failed to stat '%s': %m", device);
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering udev_device = udev_device_new_from_devnum(udev, 'b', st.st_rdev);
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering log_error("Failed to detect device %s", device);
b938cb902c3b5bca807a94b277672c64d6767886Jan Engelhardt /* Find root device */
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering log_error("Failed to stat() the root directory: %m");
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering /* Virtual root devices don't need an fsck */
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek /* check if we are already writable */
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (utimensat(AT_FDCWD, "/", times, 0) == 0) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_info("Root directory is writable, skipping check.");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev);
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering log_error("Failed to detect root device.");
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering device = udev_device_get_devnode(udev_device);
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering log_error("Failed to detect device node of root directory.");
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering type = udev_device_get_property_value(udev_device, "ID_FS_TYPE");
9d3e5d11bee9ab29a479e534622bb1b23daf9fabLennart Poettering const char *checker = strappenda("/sbin/fsck.", type);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_info("%s doesn't exist, not checking file system.", checker);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_warning("%s cannot be used: %m", checker);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek snprintf(dash_c, sizeof(dash_c), "-C%i", progress_pipe[1]);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek } else if (pid == 0) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek close_nointr_nofail(progress_pipe[0]);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek execv(cmdline[0], (char**) cmdline);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek process_progress(progress_pipe[0]);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek q = wait_for_terminate(pid, &status);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_error("waitid(): %s", strerror(-q));
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (status.si_code != CLD_EXITED || (status.si_status & ~1)) {
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (status.si_code == CLD_KILLED || status.si_code == CLD_DUMPED)
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_error("fsck terminated by signal %s.", signal_to_string(status.si_status));
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek else if (status.si_code == CLD_EXITED)
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_error("fsck failed with error code %i.", status.si_status);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek log_error("fsck failed due to unknown reason.");
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (status.si_code == CLD_EXITED && (status.si_status & 2) && root_directory)
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek /* System should be rebooted. */
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek start_target(SPECIAL_REBOOT_TARGET);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek else if (status.si_code == CLD_EXITED && (status.si_status & 6))
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek /* Some other problem */
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek start_target(SPECIAL_EMERGENCY_TARGET);
71365a7754db5ff8e07941501063b1da2a4b4bd5Zbigniew Jędrzejewski-Szmek if (status.si_code == CLD_EXITED && (status.si_status & 1))