/*-*- 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 . ***/ #include #include #include #include #include #include #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) { log_info("Running on battery power, skipping file system check."); 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; }