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/>.
36 #include "bus-error.h"
37 #include "bus-errors.h"
39 #include "udev-util.h"
41 static bool arg_skip = false;
42 static bool arg_force = false;
43 static bool arg_show_progress = false;
45 static void start_target(const char *target) {
46 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
47 _cleanup_bus_unref_ sd_bus *bus = NULL;
52 r = bus_open_system_systemd(&bus);
54 log_error("Failed to get D-Bus connection: %s", strerror(-r));
58 log_info("Running request %s/start/replace", target);
60 /* Start these units only if we can replace base.target with it */
61 r = sd_bus_call_method(bus,
62 "org.freedesktop.systemd1",
63 "/org/freedesktop/systemd1",
64 "org.freedesktop.systemd1.Manager",
68 "sss", "basic.target", target, "replace");
70 /* Don't print a warning if we aren't called during startup */
71 if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB))
72 log_error("Failed to start unit: %s", bus_error_message(&error, -r));
75 static int parse_proc_cmdline(void) {
76 char *line, *w, *state;
80 r = proc_cmdline(&line);
82 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
86 FOREACH_WORD_QUOTED(w, l, line, state) {
88 if (strneq(w, "fsck.mode=auto", l))
89 arg_force = arg_skip = false;
90 else if (strneq(w, "fsck.mode=force", l))
92 else if (strneq(w, "fsck.mode=skip", l))
94 else if (startswith(w, "fsck"))
95 log_warning("Invalid fsck parameter. Ignoring.");
96 #ifdef HAVE_SYSV_COMPAT
97 else if (strneq(w, "fastboot", l)) {
98 log_error("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line.");
100 } else if (strneq(w, "forcefsck", l)) {
101 log_error("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line.");
111 static void test_files(void) {
112 #ifdef HAVE_SYSV_COMPAT
113 if (access("/fastboot", F_OK) >= 0) {
114 log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system.");
118 if (access("/forcefsck", F_OK) >= 0) {
119 log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system.");
124 if (access("/run/systemd/show-status", F_OK) >= 0 || plymouth_running())
125 arg_show_progress = true;
128 static double percent(int pass, unsigned long cur, unsigned long max) {
129 /* Values stolen from e2fsck */
131 static const int pass_table[] = {
132 0, 70, 90, 92, 95, 100
138 if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0)
141 return (double) pass_table[pass-1] +
142 ((double) pass_table[pass] - (double) pass_table[pass-1]) *
143 (double) cur / (double) max;
146 static int process_progress(int fd) {
154 close_nointr_nofail(fd);
158 console = fopen("/dev/console", "w");
166 unsigned long cur, max;
171 if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4)
174 /* Only show one progress counter at max */
176 if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0) {
184 /* Only update once every 50ms */
185 t = now(CLOCK_MONOTONIC);
186 if (last + 50 * USEC_PER_MSEC > t) {
193 p = percent(pass, cur, max);
194 fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m);
206 fputc('\r', console);
207 for (j = 0; j < (unsigned) clear; j++)
209 fputc('\r', console);
218 int main(int argc, char *argv[]) {
219 const char *cmdline[9];
220 int i = 0, r = EXIT_FAILURE, q;
223 _cleanup_udev_unref_ struct udev *udev = NULL;
224 _cleanup_udev_device_unref_ struct udev_device *udev_device = NULL;
227 int progress_pipe[2] = { -1, -1 };
231 log_error("This program expects one or no arguments.");
235 log_set_target(LOG_TARGET_AUTO);
236 log_parse_environment();
241 parse_proc_cmdline();
244 if (!arg_force && arg_skip)
249 root_directory = false;
252 struct timespec times[2];
254 /* Find root device */
256 if (stat("/", &st) < 0) {
257 log_error("Failed to stat() the root directory: %m");
261 /* Virtual root devices don't need an fsck */
262 if (major(st.st_dev) == 0)
265 /* check if we are already writable */
266 times[0] = st.st_atim;
267 times[1] = st.st_mtim;
268 if (utimensat(AT_FDCWD, "/", times, 0) == 0) {
269 log_info("Root directory is writable, skipping check.");
273 if (!(udev = udev_new())) {
278 if (!(udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev))) {
279 log_error("Failed to detect root device.");
283 if (!(device = udev_device_get_devnode(udev_device))) {
284 log_error("Failed to detect device node of root directory.");
288 root_directory = true;
291 if (arg_show_progress)
292 if (pipe(progress_pipe) < 0) {
293 log_error("pipe(): %m");
297 cmdline[i++] = "/sbin/fsck";
308 if (progress_pipe[1] >= 0) {
309 snprintf(dash_c, sizeof(dash_c), "-C%i", progress_pipe[1]);
310 char_array_0(dash_c);
311 cmdline[i++] = dash_c;
314 cmdline[i++] = device;
319 log_error("fork(): %m");
321 } else if (pid == 0) {
323 if (progress_pipe[0] >= 0)
324 close_nointr_nofail(progress_pipe[0]);
325 execv(cmdline[0], (char**) cmdline);
326 _exit(8); /* Operational error */
329 if (progress_pipe[1] >= 0) {
330 close_nointr_nofail(progress_pipe[1]);
331 progress_pipe[1] = -1;
334 if (progress_pipe[0] >= 0) {
335 process_progress(progress_pipe[0]);
336 progress_pipe[0] = -1;
339 q = wait_for_terminate(pid, &status);
341 log_error("waitid(): %s", strerror(-q));
345 if (status.si_code != CLD_EXITED || (status.si_status & ~1)) {
347 if (status.si_code == CLD_KILLED || status.si_code == CLD_DUMPED)
348 log_error("fsck terminated by signal %s.", signal_to_string(status.si_status));
349 else if (status.si_code == CLD_EXITED)
350 log_error("fsck failed with error code %i.", status.si_status);
352 log_error("fsck failed due to unknown reason.");
354 if (status.si_code == CLD_EXITED && (status.si_status & 2) && root_directory)
355 /* System should be rebooted. */
356 start_target(SPECIAL_REBOOT_TARGET);
357 else if (status.si_code == CLD_EXITED && (status.si_status & 6))
358 /* Some other problem */
359 start_target(SPECIAL_EMERGENCY_TARGET);
362 log_warning("Ignoring error.");
368 if (status.si_code == CLD_EXITED && (status.si_status & 1))
369 touch("/run/systemd/quotacheck");
372 close_pipe(progress_pipe);