This file is part of systemd.
Copyright 2010 Lennart Poettering
+ Copyright 2014 Holger Hans Peter Freyther
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
#include <stdio.h>
#include <stdbool.h>
-#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/prctl.h>
-#include <libudev.h>
-#include <dbus/dbus.h>
+#include "sd-bus.h"
+#include "sd-device.h"
#include "util.h"
-#include "dbus-common.h"
+#include "process-util.h"
+#include "signal-util.h"
#include "special.h"
-#include "bus-errors.h"
-#include "virt.h"
+#include "bus-util.h"
+#include "bus-error.h"
+#include "bus-common-errors.h"
+#include "device-util.h"
+#include "path-util.h"
+#include "socket-util.h"
+
+/* exit codes as defined in fsck(8) */
+enum {
+ FSCK_SUCCESS = 0,
+ FSCK_ERROR_CORRECTED = 1,
+ FSCK_SYSTEM_SHOULD_REBOOT = 2,
+ FSCK_ERRORS_LEFT_UNCORRECTED = 4,
+ FSCK_OPERATIONAL_ERROR = 8,
+ FSCK_USAGE_OR_SYNTAX_ERROR = 16,
+ FSCK_USER_CANCELLED = 32,
+ FSCK_SHARED_LIB_ERROR = 128,
+};
static bool arg_skip = false;
static bool arg_force = false;
static bool arg_show_progress = false;
+static const char *arg_repair = "-a";
-static void start_target(const char *target, bool isolate) {
- DBusMessage *m = NULL, *reply = NULL;
- DBusError error;
- const char *mode, *basic_target = "basic.target";
- DBusConnection *bus = NULL;
+static void start_target(const char *target) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_close_unref_ sd_bus *bus = NULL;
+ int r;
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;
+ r = bus_open_system_systemd(&bus);
+ if (r < 0) {
+ log_error_errno(r, "Failed to get D-Bus connection: %m");
+ return;
}
- if (isolate)
- mode = "isolate";
- else
- mode = "replace";
-
- log_info("Running request %s/start/%s", target, mode);
-
- if (!(m = dbus_message_new_method_call("org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnitReplace"))) {
- log_error("Could not allocate message.");
- goto finish;
- }
+ log_info("Running request %s/start/replace", target);
/* Start these units only if we can replace base.target with it */
-
- if (!dbus_message_append_args(m,
- DBUS_TYPE_STRING, &basic_target,
- 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))) {
-
- /* Don't print a warning if we aren't called during
- * startup */
- if (!dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB))
- 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);
+ r = sd_bus_call_method(bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "StartUnitReplace",
+ &error,
+ NULL,
+ "sss", "basic.target", target, "replace");
+
+ /* Don't print a warning if we aren't called during startup */
+ if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB))
+ log_error("Failed to start unit: %s", bus_error_message(&error, r));
}
-static int parse_proc_cmdline(void) {
- char *line, *w, *state;
+static int parse_proc_cmdline_item(const char *key, const char *value) {
int r;
- size_t l;
- if (detect_container(NULL) > 0)
- return 0;
+ assert(key);
- r = read_one_line_file("/proc/cmdline", &line);
- if (r < 0) {
- log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
- return 0;
- }
+ if (streq(key, "fsck.mode") && value) {
- FOREACH_WORD_QUOTED(w, l, line, state) {
-
- if (strneq(w, "fsck.mode=auto", l))
+ if (streq(value, "auto"))
arg_force = arg_skip = false;
- else if (strneq(w, "fsck.mode=force", l))
+ else if (streq(value, "force"))
arg_force = true;
- else if (strneq(w, "fsck.mode=skip", l))
- arg_skip = true;
- else if (startswith(w, "fsck"))
- log_warning("Invalid fsck parameter. Ignoring.");
-#ifdef HAVE_SYSV_COMPAT
- else if (strneq(w, "fastboot", l)) {
- log_error("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line.");
+ else if (streq(value, "skip"))
arg_skip = true;
- } else if (strneq(w, "forcefsck", l)) {
- log_error("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line.");
- arg_force = true;
+ else
+ log_warning("Invalid fsck.mode= parameter '%s'. Ignoring.", value);
+
+ } else if (streq(key, "fsck.repair") && value) {
+
+ if (streq(value, "preen"))
+ arg_repair = "-a";
+ else {
+ r = parse_boolean(value);
+ if (r > 0)
+ arg_repair = "-y";
+ else if (r == 0)
+ arg_repair = "-n";
+ else
+ log_warning("Invalid fsck.repair= parameter '%s'. Ignoring.", value);
}
-#endif
}
- free(line);
+#ifdef HAVE_SYSV_COMPAT
+ else if (streq(key, "fastboot") && !value) {
+ log_warning("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line.");
+ arg_skip = true;
+
+ } else if (streq(key, "forcefsck") && !value) {
+ log_warning("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line.");
+ arg_force = true;
+ }
+#endif
+
return 0;
}
static void test_files(void) {
+
#ifdef HAVE_SYSV_COMPAT
if (access("/fastboot", F_OK) >= 0) {
log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system.");
}
#endif
- if (access("/run/systemd/show-status", F_OK) >= 0 || plymouth_running())
- arg_show_progress = true;
+ arg_show_progress = access("/run/systemd/show-status", F_OK) >= 0;
}
static double percent(int pass, unsigned long cur, unsigned long max) {
}
static int process_progress(int fd) {
- FILE *f, *console;
+ _cleanup_fclose_ FILE *console = NULL, *f = NULL;
usec_t last = 0;
bool locked = false;
- int clear = 0;
+ int clear = 0, r;
- f = fdopen(fd, "r");
+ /* No progress pipe to process? Then we are a NOP. */
+ if (fd < 0)
+ return 0;
+
+ f = fdopen(fd, "re");
if (!f) {
- close_nointr_nofail(fd);
+ safe_close(fd);
return -errno;
}
- console = fopen("/dev/console", "w");
- if (!console) {
- fclose(f);
+ console = fopen("/dev/console", "we");
+ if (!console)
return -ENOMEM;
- }
- while (!feof(f)) {
+ for (;;) {
int pass, m;
unsigned long cur, max;
- char *device;
+ _cleanup_free_ char *device = NULL;
double p;
usec_t t;
- if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4)
+ if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4) {
+
+ if (ferror(f))
+ r = log_warning_errno(errno, "Failed to read from progress pipe: %m");
+ else if (feof(f))
+ r = 0;
+ else {
+ log_warning("Failed to parse progress pipe data");
+ r = -EBADMSG;
+ }
break;
+ }
/* Only show one progress counter at max */
if (!locked) {
- if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0) {
- free(device);
+ if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0)
continue;
- }
locked = true;
}
/* Only update once every 50ms */
t = now(CLOCK_MONOTONIC);
- if (last + 50 * USEC_PER_MSEC > t) {
- free(device);
+ if (last + 50 * USEC_PER_MSEC > t)
continue;
- }
last = t;
fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m);
fflush(console);
- free(device);
-
if (m > clear)
clear = m;
}
fflush(console);
}
- fclose(f);
- fclose(console);
- return 0;
+ return r;
+}
+
+static int fsck_progress_socket(void) {
+ static const union sockaddr_union sa = {
+ .un.sun_family = AF_UNIX,
+ .un.sun_path = "/run/systemd/fsck.progress",
+ };
+
+ int fd, r;
+
+ fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (fd < 0)
+ return log_warning_errno(errno, "socket(): %m");
+
+ if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path)) < 0) {
+ r = log_full_errno(errno == ECONNREFUSED || errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
+ errno, "Failed to connect to progress socket %s, ignoring: %m", sa.un.sun_path);
+ safe_close(fd);
+ return r;
+ }
+
+ return fd;
}
int main(int argc, char *argv[]) {
- const char *cmdline[9];
- int i = 0, r = EXIT_FAILURE, q;
- pid_t pid;
- siginfo_t status;
- struct udev *udev = NULL;
- struct udev_device *udev_device = NULL;
- const char *device;
+ _cleanup_close_pair_ int progress_pipe[2] = { -1, -1 };
+ _cleanup_device_unref_ sd_device *dev = NULL;
+ const char *device, *type;
bool root_directory;
- int progress_pipe[2] = { -1, -1 };
- char dash_c[2+10+1];
+ siginfo_t status;
+ struct stat st;
+ int r;
+ pid_t pid;
if (argc > 2) {
log_error("This program expects one or no arguments.");
umask(0022);
- parse_proc_cmdline();
+ r = parse_proc_cmdline(parse_proc_cmdline_item);
+ if (r < 0)
+ log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
+
test_files();
- if (!arg_force && arg_skip)
- return 0;
+ if (!arg_force && arg_skip) {
+ r = 0;
+ goto finish;
+ }
if (argc > 1) {
device = argv[1];
+
+ if (stat(device, &st) < 0) {
+ r = log_error_errno(errno, "Failed to stat %s: %m", device);
+ goto finish;
+ }
+
+ if (!S_ISBLK(st.st_mode)) {
+ log_error("%s is not a block device.", device);
+ r = -EINVAL;
+ goto finish;
+ }
+
+ r = sd_device_new_from_devnum(&dev, 'b', st.st_rdev);
+ if (r < 0) {
+ log_error_errno(r, "Failed to detect device %s: %m", device);
+ goto finish;
+ }
+
root_directory = false;
} else {
- struct stat st;
struct timespec times[2];
/* Find root device */
if (stat("/", &st) < 0) {
- log_error("Failed to stat() the root directory: %m");
+ r = log_error_errno(errno, "Failed to stat() the root directory: %m");
goto finish;
}
/* Virtual root devices don't need an fsck */
- if (major(st.st_dev) == 0)
- return 0;
+ if (major(st.st_dev) == 0) {
+ log_debug("Root directory is virtual or btrfs, skipping check.");
+ r = 0;
+ goto finish;
+ }
/* check if we are already writable */
times[0] = st.st_atim;
times[1] = st.st_mtim;
+
if (utimensat(AT_FDCWD, "/", times, 0) == 0) {
log_info("Root directory is writable, skipping check.");
- return 0;
- }
-
- if (!(udev = udev_new())) {
- log_oom();
+ r = 0;
goto finish;
}
- if (!(udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev))) {
- log_error("Failed to detect root device.");
+ r = sd_device_new_from_devnum(&dev, 'b', st.st_dev);
+ if (r < 0) {
+ log_error_errno(r, "Failed to detect root device: %m");
goto finish;
}
- if (!(device = udev_device_get_devnode(udev_device))) {
- log_error("Failed to detect device node of root directory.");
+ r = sd_device_get_devname(dev, &device);
+ if (r < 0) {
+ log_error_errno(r, "Failed to detect device node of root directory: %m");
goto finish;
}
root_directory = true;
}
- if (arg_show_progress)
+ r = sd_device_get_property_value(dev, "ID_FS_TYPE", &type);
+ if (r >= 0) {
+ r = fsck_exists(type);
+ if (r == -ENOENT) {
+ log_info("fsck.%s doesn't exist, not checking file system on %s", type, device);
+ r = 0;
+ goto finish;
+ } else if (r < 0)
+ log_warning_errno(r, "Couldn't detect if fsck.%s may be used for %s: %m", type, device);
+ }
+
+ if (arg_show_progress) {
if (pipe(progress_pipe) < 0) {
- log_error("pipe(): %m");
+ r = log_error_errno(errno, "pipe(): %m");
goto finish;
}
-
- cmdline[i++] = "/sbin/fsck";
- cmdline[i++] = "-a";
- cmdline[i++] = "-T";
- cmdline[i++] = "-l";
-
- if (!root_directory)
- cmdline[i++] = "-M";
-
- if (arg_force)
- cmdline[i++] = "-f";
-
- if (progress_pipe[1] >= 0) {
- snprintf(dash_c, sizeof(dash_c), "-C%i", progress_pipe[1]);
- char_array_0(dash_c);
- cmdline[i++] = dash_c;
}
- cmdline[i++] = device;
- cmdline[i++] = NULL;
-
pid = fork();
if (pid < 0) {
- log_error("fork(): %m");
+ r = log_error_errno(errno, "fork(): %m");
goto finish;
- } else if (pid == 0) {
- /* Child */
- if (progress_pipe[0] >= 0)
- close_nointr_nofail(progress_pipe[0]);
- execv(cmdline[0], (char**) cmdline);
- _exit(8); /* Operational error */
}
+ if (pid == 0) {
+ char dash_c[sizeof("-C")-1 + DECIMAL_STR_MAX(int) + 1];
+ int progress_socket = -1;
+ const char *cmdline[9];
+ int i = 0;
- if (progress_pipe[1] >= 0) {
- close_nointr_nofail(progress_pipe[1]);
- progress_pipe[1] = -1;
- }
+ /* Child */
+
+ (void) reset_all_signal_handlers();
+ (void) reset_signal_mask();
+ assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
+
+ /* Close the reading side of the progress pipe */
+ progress_pipe[0] = safe_close(progress_pipe[0]);
+
+ /* Try to connect to a progress management daemon, if there is one */
+ progress_socket = fsck_progress_socket();
+ if (progress_socket >= 0) {
+ /* If this worked we close the progress pipe early, and just use the socket */
+ progress_pipe[1] = safe_close(progress_pipe[1]);
+ xsprintf(dash_c, "-C%i", progress_socket);
+ } else if (progress_pipe[1] >= 0) {
+ /* Otherwise if we have the progress pipe to our own local handle, we use it */
+ xsprintf(dash_c, "-C%i", progress_pipe[1]);
+ } else
+ dash_c[0] = 0;
- if (progress_pipe[0] >= 0) {
- process_progress(progress_pipe[0]);
- progress_pipe[0] = -1;
+ cmdline[i++] = "/sbin/fsck";
+ cmdline[i++] = arg_repair;
+ cmdline[i++] = "-T";
+
+ /*
+ * Since util-linux v2.25 fsck uses /run/fsck/<diskname>.lock files.
+ * The previous versions use flock for the device and conflict with
+ * udevd, see https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5
+ */
+ cmdline[i++] = "-l";
+
+ if (!root_directory)
+ cmdline[i++] = "-M";
+
+ if (arg_force)
+ cmdline[i++] = "-f";
+
+ if (!isempty(dash_c))
+ cmdline[i++] = dash_c;
+
+ cmdline[i++] = device;
+ cmdline[i++] = NULL;
+
+ execv(cmdline[0], (char**) cmdline);
+ _exit(FSCK_OPERATIONAL_ERROR);
}
- q = wait_for_terminate(pid, &status);
- if (q < 0) {
- log_error("waitid(): %s", strerror(-q));
+ progress_pipe[1] = safe_close(progress_pipe[1]);
+ (void) process_progress(progress_pipe[0]);
+ progress_pipe[0] = -1;
+
+ r = wait_for_terminate(pid, &status);
+ if (r < 0) {
+ log_error_errno(r, "waitid(): %m");
goto finish;
}
else
log_error("fsck failed due to unknown reason.");
- if (status.si_code == CLD_EXITED && (status.si_status & 2) && root_directory)
+ r = -EINVAL;
+
+ if (status.si_code == CLD_EXITED && (status.si_status & FSCK_SYSTEM_SHOULD_REBOOT) && root_directory)
/* System should be rebooted. */
- start_target(SPECIAL_REBOOT_TARGET, false);
- else if (status.si_code == CLD_EXITED && (status.si_status & 6))
+ start_target(SPECIAL_REBOOT_TARGET);
+ else if (status.si_code == CLD_EXITED && (status.si_status & (FSCK_SYSTEM_SHOULD_REBOOT | FSCK_ERRORS_LEFT_UNCORRECTED)))
/* Some other problem */
- start_target(SPECIAL_EMERGENCY_TARGET, true);
+ start_target(SPECIAL_EMERGENCY_TARGET);
else {
- r = EXIT_SUCCESS;
log_warning("Ignoring error.");
+ r = 0;
}
} else
- r = EXIT_SUCCESS;
+ r = 0;
- if (status.si_code == CLD_EXITED && (status.si_status & 1))
- touch("/run/systemd/quotacheck");
+ if (status.si_code == CLD_EXITED && (status.si_status & FSCK_ERROR_CORRECTED))
+ (void) touch("/run/systemd/quotacheck");
finish:
- if (udev_device)
- udev_device_unref(udev_device);
-
- if (udev)
- udev_unref(udev);
-
- close_pipe(progress_pipe);
-
- return r;
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}