1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
7 Copyright 2014 Holger Hans Peter Freyther
9 systemd is free software; you can redistribute it and/or modify it
10 under the terms of the GNU Lesser General Public License as published by
11 the Free Software Foundation; either version 2.1 of the License, or
12 (at your option) any later version.
14 systemd is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public License
20 along with systemd; If not, see <http://www.gnu.org/licenses/>.
32 #include "sd-device.h"
37 #include "bus-error.h"
38 #include "bus-common-errors.h"
39 #include "device-util.h"
40 #include "path-util.h"
41 #include "socket-util.h"
42 #include "fsckd/fsckd.h"
44 static bool arg_skip = false;
45 static bool arg_force = false;
46 static const char *arg_repair = "-a";
48 static void start_target(const char *target) {
49 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
50 _cleanup_bus_close_unref_ sd_bus *bus = NULL;
55 r = bus_open_system_systemd(&bus);
57 log_error_errno(r, "Failed to get D-Bus connection: %m");
61 log_info("Running request %s/start/replace", target);
63 /* Start these units only if we can replace base.target with it */
64 r = sd_bus_call_method(bus,
65 "org.freedesktop.systemd1",
66 "/org/freedesktop/systemd1",
67 "org.freedesktop.systemd1.Manager",
71 "sss", "basic.target", target, "replace");
73 /* Don't print a warning if we aren't called during startup */
74 if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB))
75 log_error("Failed to start unit: %s", bus_error_message(&error, -r));
78 static int parse_proc_cmdline_item(const char *key, const char *value) {
80 if (streq(key, "fsck.mode") && value) {
82 if (streq(value, "auto"))
83 arg_force = arg_skip = false;
84 else if (streq(value, "force"))
86 else if (streq(value, "skip"))
89 log_warning("Invalid fsck.mode= parameter '%s'. Ignoring.", value);
91 } else if (streq(key, "fsck.repair") && value) {
93 if (streq(value, "preen"))
95 else if (streq(value, "yes"))
97 else if (streq(value, "no"))
100 log_warning("Invalid fsck.repair= parameter '%s'. Ignoring.", value);
103 #ifdef HAVE_SYSV_COMPAT
104 else if (streq(key, "fastboot") && !value) {
105 log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line.");
108 } else if (streq(key, "forcefsck") && !value) {
109 log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line.");
117 static void test_files(void) {
119 #ifdef HAVE_SYSV_COMPAT
120 if (access("/fastboot", F_OK) >= 0) {
121 log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system.");
125 if (access("/forcefsck", F_OK) >= 0) {
126 log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system.");
133 static int process_progress(int fd, pid_t fsck_pid, dev_t device_num) {
134 _cleanup_fclose_ FILE *f = NULL;
136 _cleanup_close_ int fsckd_fd = -1;
137 static const union sockaddr_union sa = {
138 .un.sun_family = AF_UNIX,
139 .un.sun_path = FSCKD_SOCKET_PATH,
142 fsckd_fd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
144 return log_warning_errno(errno, "Cannot open fsckd socket, we won't report fsck progress: %m");
145 if (connect(fsckd_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0)
146 return log_warning_errno(errno, "Cannot connect to fsckd socket, we won't report fsck progress: %m");
150 return log_warning_errno(errno, "Cannot connect to fsck, we won't report fsck progress: %m");
158 _cleanup_free_ char *device = NULL;
159 FsckProgress progress;
160 FsckdMessage fsckd_message;
162 if (fscanf(f, "%i %zu %zu %ms", &pass, &cur, &max, &device) != 4)
165 /* Only update once every 50ms */
166 t = now(CLOCK_MONOTONIC);
167 if (last + 50 * USEC_PER_MSEC > t)
172 /* send progress to fsckd */
173 progress.devnum = device_num;
176 progress.pass = pass;
178 r = send(fsckd_fd, &progress, sizeof(FsckProgress), 0);
179 if (r < 0 || (size_t) r < sizeof(FsckProgress))
180 log_warning_errno(errno, "Cannot communicate fsck progress to fsckd: %m");
182 /* get fsckd requests, only read when we have coherent size data */
183 r = ioctl(fsckd_fd, FIONREAD, &buflen);
184 if (r == 0 && (size_t) buflen >= sizeof(FsckdMessage)) {
185 r = recv(fsckd_fd, &fsckd_message, sizeof(FsckdMessage), 0);
186 if (r > 0 && fsckd_message.cancel == 1) {
187 log_info("Request to cancel fsck from fsckd");
188 kill(fsck_pid, SIGTERM);
196 int main(int argc, char *argv[]) {
197 const char *cmdline[9];
198 int i = 0, r = EXIT_FAILURE, q;
202 _cleanup_device_unref_ sd_device *dev = NULL;
203 const char *device, *type;
205 _cleanup_close_pair_ int progress_pipe[2] = { -1, -1 };
206 char dash_c[sizeof("-C")-1 + DECIMAL_STR_MAX(int) + 1];
210 log_error("This program expects one or no arguments.");
214 log_set_target(LOG_TARGET_AUTO);
215 log_parse_environment();
220 q = parse_proc_cmdline(parse_proc_cmdline_item);
222 log_warning_errno(q, "Failed to parse kernel command line, ignoring: %m");
226 if (!arg_force && arg_skip) {
233 root_directory = false;
235 if (stat(device, &st) < 0) {
236 r = log_error_errno(errno, "Failed to stat '%s': %m", device);
240 r = sd_device_new_from_devnum(&dev, 'b', st.st_rdev);
242 log_error_errno(r, "Failed to detect device %s: %m", device);
246 struct timespec times[2];
248 /* Find root device */
250 if (stat("/", &st) < 0) {
251 r = log_error_errno(errno, "Failed to stat() the root directory: %m");
255 /* Virtual root devices don't need an fsck */
256 if (major(st.st_dev) == 0) {
257 log_debug("Root directory is virtual, skipping check.");
262 /* check if we are already writable */
263 times[0] = st.st_atim;
264 times[1] = st.st_mtim;
265 if (utimensat(AT_FDCWD, "/", times, 0) == 0) {
266 log_info("Root directory is writable, skipping check.");
271 r = sd_device_new_from_devnum(&dev, 'b', st.st_dev);
273 log_error_errno(r, "Failed to detect root device: %m");
277 r = sd_device_get_devname(dev, &device);
279 log_error_errno(r, "Failed to detect device node of root directory: %m");
284 root_directory = true;
287 r = sd_device_get_property_value(dev, "ID_FS_TYPE", &type);
289 r = fsck_exists(type);
291 log_info("fsck.%s doesn't exist, not checking file system on %s", type, device);
295 log_warning_errno(r, "fsck.%s cannot be used for %s: %m", type, device);
298 if (pipe(progress_pipe) < 0) {
299 r = log_error_errno(errno, "pipe(): %m");
303 cmdline[i++] = "/sbin/fsck";
304 cmdline[i++] = arg_repair;
308 * Since util-linux v2.25 fsck uses /run/fsck/<diskname>.lock files.
309 * The previous versions use flock for the device and conflict with
310 * udevd, see https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5
320 xsprintf(dash_c, "-C%i", progress_pipe[1]);
321 cmdline[i++] = dash_c;
323 cmdline[i++] = device;
328 r = log_error_errno(errno, "fork(): %m");
330 } else if (pid == 0) {
332 progress_pipe[0] = safe_close(progress_pipe[0]);
333 execv(cmdline[0], (char**) cmdline);
334 _exit(8); /* Operational error */
337 progress_pipe[1] = safe_close(progress_pipe[1]);
339 progress_rc = process_progress(progress_pipe[0], pid, st.st_rdev);
340 progress_pipe[0] = -1;
342 r = wait_for_terminate(pid, &status);
344 log_error_errno(r, "waitid(): %m");
348 if (status.si_code != CLD_EXITED || (status.si_status & ~1) || progress_rc != 0) {
350 /* cancel will kill fsck (but process_progress returns 0) */
351 if ((progress_rc != 0 && status.si_code == CLD_KILLED) || status.si_code == CLD_DUMPED)
352 log_error("fsck terminated by signal %s.", signal_to_string(status.si_status));
353 else if (status.si_code == CLD_EXITED)
354 log_error("fsck failed with error code %i.", status.si_status);
355 else if (progress_rc != 0)
356 log_error("fsck failed due to unknown reason.");
360 if (status.si_code == CLD_EXITED && (status.si_status & 2) && root_directory)
361 /* System should be rebooted. */
362 start_target(SPECIAL_REBOOT_TARGET);
363 else if (status.si_code == CLD_EXITED && (status.si_status & 6))
364 /* Some other problem */
365 start_target(SPECIAL_EMERGENCY_TARGET);
368 if (progress_rc != 0)
369 log_warning("Ignoring error.");
375 if (status.si_code == CLD_EXITED && (status.si_status & 1))
376 touch("/run/systemd/quotacheck");
379 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;