diff options
Diffstat (limited to 'src/fsck.c')
| -rw-r--r-- | src/fsck.c | 218 |
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; +} |