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-rw-r--r--src/fsck.c218
1 files changed, 218 insertions, 0 deletions
diff --git a/src/fsck.c b/src/fsck.c
new file mode 100644
index 0000000000..0b0cf64036
--- /dev/null
+++ b/src/fsck.c
@@ -0,0 +1,218 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <dbus/dbus.h>
+
+#include "util.h"
+#include "ac-power.h"
+#include "dbus-common.h"
+#include "special.h"
+
+static bool arg_skip = false;
+static bool arg_force = false;
+
+static void start_target(const char *target, bool isolate) {
+ DBusMessage *m = NULL, *reply = NULL;
+ DBusError error;
+ const char *mode;
+ DBusConnection *bus = NULL;
+
+ assert(target);
+
+ dbus_error_init(&error);
+
+ if (bus_connect(DBUS_BUS_SYSTEM, &bus, NULL, &error) < 0) {
+ log_error("Failed to get D-Bus connection: %s", bus_error_message(&error));
+ goto finish;
+ }
+
+ if (isolate)
+ mode = "isolate";
+ else
+ mode = "replace";
+
+ log_debug("Running request %s/start/%s", target, mode);
+
+ if (!(m = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnit"))) {
+ log_error("Could not allocate message.");
+ goto finish;
+ }
+
+ if (!dbus_message_append_args(m,
+ DBUS_TYPE_STRING, &target,
+ DBUS_TYPE_STRING, &mode,
+ DBUS_TYPE_INVALID)) {
+ log_error("Could not attach target and flag information to message.");
+ goto finish;
+ }
+
+ if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
+ log_error("Failed to start unit: %s", bus_error_message(&error));
+ goto finish;
+ }
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ if (bus) {
+ dbus_connection_flush(bus);
+ dbus_connection_close(bus);
+ dbus_connection_unref(bus);
+ }
+
+ dbus_error_free(&error);
+}
+
+static int parse_proc_cmdline(void) {
+ char *line, *w, *state;
+ int r;
+ size_t l;
+
+ if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
+ log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
+ return 0;
+ }
+
+ FOREACH_WORD_QUOTED(w, l, line, state) {
+
+ if (strneq(w, "fsck.mode=auto", l))
+ arg_force = arg_skip = false;
+ else if (strneq(w, "fsck.mode=force", l))
+ arg_force = true;
+ else if (strneq(w, "fsck.mode=skip", l))
+ arg_skip = true;
+ else if (startswith(w, "fsck.mode"))
+ log_warning("Invalid fsck.mode= parameter. Ignoring.");
+#ifdef TARGET_FEDORA
+ else if (strneq(w, "fastboot", l))
+ arg_skip = true;
+ else if (strneq(w, "forcefsck", l))
+ arg_force = true;
+#endif
+ }
+
+ free(line);
+ return 0;
+}
+
+static void test_files(void) {
+ if (access("/fastboot", F_OK) >= 0)
+ arg_skip = true;
+
+ if (access("/forcefsck", F_OK) >= 0)
+ arg_force = true;
+}
+
+int main(int argc, char *argv[]) {
+ static const char * cmdline[7];
+ int i = 0, r = EXIT_FAILURE, q;
+ pid_t pid;
+ siginfo_t status;
+
+ if (argc != 2) {
+ log_error("This program expects exactly one argument.");
+ return EXIT_FAILURE;
+ }
+
+ log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
+ log_parse_environment();
+ log_open();
+
+ parse_proc_cmdline();
+ test_files();
+
+ if (!arg_force) {
+ if (arg_skip)
+ return 0;
+
+ /* FIXME: only execute necessary fsck's if no AC power present */
+ if (on_ac_power() == 0)
+ return 0;
+ }
+
+ cmdline[i++] = "/sbin/fsck";
+ cmdline[i++] = "-a";
+ cmdline[i++] = "-T";
+ cmdline[i++] = "-C";
+
+ if (arg_force)
+ cmdline[i++] = "-f";
+
+ cmdline[i++] = argv[1];
+ cmdline[i++] = NULL;
+
+ if ((pid = fork()) < 0) {
+ log_error("fork(): %m");
+ goto finish;
+ } else if (pid == 0) {
+ /* Child */
+ execv(cmdline[0], (char**) cmdline);
+ _exit(8); /* Operational error */
+ }
+
+ if ((q = wait_for_terminate(pid, &status)) < 0) {
+ log_error("waitid(): %s", strerror(-q));
+ goto finish;
+ }
+
+ if (status.si_code == CLD_KILLED ||
+ status.si_code == CLD_DUMPED) {
+ log_error("fsck terminated by signal %s.", signal_to_string(status.si_status));
+ goto finish;
+
+ } else if (status.si_code != CLD_EXITED) {
+ log_error("fsck failed due to unknown reason.");
+ goto finish;
+ }
+
+ if (status.si_status & ~1) {
+
+ if (access("/dev/.systemd/late-fsck", F_OK) >= 0) {
+ log_error("fsck failed with error code %i.", status.si_status);
+ goto finish;
+ }
+
+ if (status.si_status & 2)
+ /* System should be rebooted. */
+ start_target(SPECIAL_REBOOT_TARGET, false);
+ else
+ /* Some other problem */
+ start_target(SPECIAL_EMERGENCY_TARGET, true);
+
+ } else
+ r = EXIT_SUCCESS;
+
+ if (status.si_status & 1)
+ touch("/dev/.systemd/quotacheck");
+
+finish:
+ return r;
+}