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 General Public License as published by
10 the Free Software Foundation; either version 2 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 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
30 #include <dbus/dbus.h>
33 #include "dbus-common.h"
35 #include "bus-errors.h"
37 static bool arg_skip = false;
38 static bool arg_force = false;
40 static void start_target(const char *target, bool isolate) {
41 DBusMessage *m = NULL, *reply = NULL;
43 const char *mode, *basic_target = "basic.target";
44 DBusConnection *bus = NULL;
48 dbus_error_init(&error);
50 if (bus_connect(DBUS_BUS_SYSTEM, &bus, NULL, &error) < 0) {
51 log_error("Failed to get D-Bus connection: %s", bus_error_message(&error));
60 log_debug("Running request %s/start/%s", target, mode);
62 if (!(m = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnitReplace"))) {
63 log_error("Could not allocate message.");
67 /* Start these units only if we can replace base.target with it */
69 if (!dbus_message_append_args(m,
70 DBUS_TYPE_STRING, &basic_target,
71 DBUS_TYPE_STRING, &target,
72 DBUS_TYPE_STRING, &mode,
74 log_error("Could not attach target and flag information to message.");
78 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
80 /* Don't print a waring if we aren't called during
82 if (!dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB))
83 log_error("Failed to start unit: %s", bus_error_message(&error));
90 dbus_message_unref(m);
93 dbus_message_unref(reply);
96 dbus_connection_flush(bus);
97 dbus_connection_close(bus);
98 dbus_connection_unref(bus);
101 dbus_error_free(&error);
104 static int parse_proc_cmdline(void) {
105 char *line, *w, *state;
109 if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
110 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
114 FOREACH_WORD_QUOTED(w, l, line, state) {
116 if (strneq(w, "fsck.mode=auto", l))
117 arg_force = arg_skip = false;
118 else if (strneq(w, "fsck.mode=force", l))
120 else if (strneq(w, "fsck.mode=skip", l))
122 else if (startswith(w, "fsck.mode"))
123 log_warning("Invalid fsck.mode= parameter. Ignoring.");
125 else if (strneq(w, "fastboot", l))
127 else if (strneq(w, "forcefsck", l))
136 static void test_files(void) {
137 if (access("/fastboot", F_OK) >= 0)
140 if (access("/forcefsck", F_OK) >= 0)
144 int main(int argc, char *argv[]) {
145 const char *cmdline[8];
146 int i = 0, r = EXIT_FAILURE, q;
149 struct udev *udev = NULL;
150 struct udev_device *udev_device = NULL;
155 log_error("This program expects one or no arguments.");
159 log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
160 log_parse_environment();
163 parse_proc_cmdline();
166 if (!arg_force && arg_skip)
171 root_directory = false;
174 struct timespec times[2];
176 /* Find root device */
178 if (stat("/", &st) < 0) {
179 log_error("Failed to stat() the root directory: %m");
183 /* Virtual root devices don't need an fsck */
184 if (major(st.st_dev) == 0)
187 /* check if we are already writable */
188 times[0] = st.st_atim;
189 times[1] = st.st_mtim;
190 if (utimensat(AT_FDCWD, "/", times, 0) == 0) {
191 log_info("Root directory is writable, skipping check.");
195 if (!(udev = udev_new())) {
196 log_error("Out of memory");
200 if (!(udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev))) {
201 log_error("Failed to detect root device.");
205 if (!(device = udev_device_get_devnode(udev_device))) {
206 log_error("Failed to detect device node of root directory.");
210 root_directory = true;
213 cmdline[i++] = "/sbin/fsck";
224 cmdline[i++] = device;
227 if ((pid = fork()) < 0) {
228 log_error("fork(): %m");
230 } else if (pid == 0) {
232 execv(cmdline[0], (char**) cmdline);
233 _exit(8); /* Operational error */
236 if ((q = wait_for_terminate(pid, &status)) < 0) {
237 log_error("waitid(): %s", strerror(-q));
241 if (status.si_code != CLD_EXITED || (status.si_status & ~1)) {
243 if (status.si_code == CLD_KILLED || status.si_code == CLD_DUMPED)
244 log_error("fsck terminated by signal %s.", signal_to_string(status.si_status));
245 else if (status.si_code == CLD_EXITED)
246 log_error("fsck failed with error code %i.", status.si_status);
248 log_error("fsck failed due to unknown reason.");
250 if (status.si_code == CLD_EXITED && status.si_status & 2)
251 /* System should be rebooted. */
252 start_target(SPECIAL_REBOOT_TARGET, false);
254 /* Some other problem */
255 start_target(SPECIAL_EMERGENCY_TARGET, true);
260 if (status.si_code == CLD_EXITED && (status.si_status & 1))
261 touch("/dev/.systemd/quotacheck");
265 udev_device_unref(udev_device);