src/fsck/fsck.c

	fsck.c revision 5220a6f3a1f5a7324898ecfe7649af254cf561a6
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/***
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  This file is part of systemd.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  Copyright 2010 Lennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  systemd is free software; you can redistribute it and/or modify it
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  under the terms of the GNU Lesser General Public License as published by
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  the Free Software Foundation; either version 2.1 of the License, or
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  (at your option) any later version.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  systemd is distributed in the hope that it will be useful, but
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  WITHOUT ANY WARRANTY; without even the implied warranty of
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  Lesser General Public License for more details.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  You should have received a copy of the GNU Lesser General Public License
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering  along with systemd; If not, see <http://www.gnu.org/licenses/>.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering***/
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <stdio.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <stdbool.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <string.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <errno.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <unistd.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <fcntl.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include <sys/file.h>
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "sd-bus.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "libudev.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "util.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "special.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "bus-util.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "bus-error.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "bus-errors.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "virt.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "fileio.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#include "udev-util.h"
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic bool arg_skip = false;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic bool arg_force = false;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic bool arg_show_progress = false;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic void start_target(const char *target) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        _cleanup_bus_unref_ sd_bus *bus = NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        int r;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        assert(target);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        r = bus_open_system_systemd(&bus);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (r < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                log_error("Failed to get D-Bus connection: %s", strerror(-r));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                return;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        log_info("Running request %s/start/replace", target);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        /* Start these units only if we can replace base.target with it */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        r = sd_bus_call_method(bus,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                               "org.freedesktop.systemd1",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                               "/org/freedesktop/systemd1",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                               "org.freedesktop.systemd1.Manager",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                               "StartUnitReplace",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                               &error,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                               NULL,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                               "sss", "basic.target", target, "replace");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        /* Don't print a warning if we aren't called during startup */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (r < 0 && !sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_JOB))
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                log_error("Failed to start unit: %s", bus_error_message(&error, -r));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic int parse_proc_cmdline(void) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        char *line, *w, *state;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        int r;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        size_t l;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (detect_container(NULL) > 0)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                return 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        r = read_one_line_file("/proc/cmdline", &line);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (r < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                return 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        FOREACH_WORD_QUOTED(w, l, line, state) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (strneq(w, "fsck.mode=auto", l))
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        arg_force = arg_skip = false;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                else if (strneq(w, "fsck.mode=force", l))
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        arg_force = true;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                else if (strneq(w, "fsck.mode=skip", l))
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        arg_skip = true;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                else if (startswith(w, "fsck"))
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_warning("Invalid fsck parameter. Ignoring.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#ifdef HAVE_SYSV_COMPAT
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                else if (strneq(w, "fastboot", l)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_error("Please pass 'fsck.mode=skip' rather than 'fastboot' on the kernel command line.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        arg_skip = true;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                } else if (strneq(w, "forcefsck", l)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_error("Please pass 'fsck.mode=force' rather than 'forcefsck' on the kernel command line.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        arg_force = true;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        free(line);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        return 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic void test_files(void) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#ifdef HAVE_SYSV_COMPAT
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (access("/fastboot", F_OK) >= 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                log_error("Please pass 'fsck.mode=skip' on the kernel command line rather than creating /fastboot on the root file system.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                arg_skip = true;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (access("/forcefsck", F_OK) >= 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                log_error("Please pass 'fsck.mode=force' on the kernel command line rather than creating /forcefsck on the root file system.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                arg_force = true;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering#endif
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (access("/run/systemd/show-status", F_OK) >= 0 || plymouth_running())
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                arg_show_progress = true;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic double percent(int pass, unsigned long cur, unsigned long max) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        /* Values stolen from e2fsck */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        static const int pass_table[] = {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                0, 70, 90, 92, 95, 100
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        };
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (pass <= 0)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                return 0.0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if ((unsigned) pass >= ELEMENTSOF(pass_table) || max == 0)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                return 100.0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        return (double) pass_table[pass-1] +
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                ((double) pass_table[pass] - (double) pass_table[pass-1]) *
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                (double) cur / (double) max;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringstatic int process_progress(int fd) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        FILE *f, *console;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        usec_t last = 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        bool locked = false;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        int clear = 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        f = fdopen(fd, "r");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (!f) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                close_nointr_nofail(fd);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                return -errno;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        console = fopen("/dev/console", "w");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (!console) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                fclose(f);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                return -ENOMEM;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        while (!feof(f)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                int pass, m;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                unsigned long cur, max;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                char *device;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                double p;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                usec_t t;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (fscanf(f, "%i %lu %lu %ms", &pass, &cur, &max, &device) != 4)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        break;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                /* Only show one progress counter at max */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (!locked) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        if (flock(fileno(console), LOCK_EX|LOCK_NB) < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                                free(device);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                                continue;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        locked = true;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                /* Only update once every 50ms */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                t = now(CLOCK_MONOTONIC);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (last + 50 * USEC_PER_MSEC > t)  {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        free(device);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        continue;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                last = t;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                p = percent(pass, cur, max);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                fflush(console);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                free(device);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (m > clear)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        clear = m;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (clear > 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                unsigned j;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                fputc('\r', console);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                for (j = 0; j < (unsigned) clear; j++)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        fputc(' ', console);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                fputc('\r', console);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                fflush(console);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        fclose(f);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        fclose(console);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        return 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringint main(int argc, char *argv[]) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        const char *cmdline[9];
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        int i = 0, r = EXIT_FAILURE, q;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        pid_t pid;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        siginfo_t status;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        _cleanup_udev_unref_ struct udev *udev = NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        _cleanup_udev_device_unref_ struct udev_device *udev_device = NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        const char *device;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        bool root_directory;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        int progress_pipe[2] = { -1, -1 };
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        char dash_c[2+10+1];
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (argc > 2) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                log_error("This program expects one or no arguments.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                return EXIT_FAILURE;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        log_set_target(LOG_TARGET_AUTO);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        log_parse_environment();
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        log_open();
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        umask(0022);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        parse_proc_cmdline();
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        test_files();
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (!arg_force && arg_skip)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                return 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (argc > 1) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                device = argv[1];
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                root_directory = false;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        } else {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                struct stat st;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                struct timespec times[2];
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                /* Find root device */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (stat("/", &st) < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_error("Failed to stat() the root directory: %m");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        goto finish;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                /* Virtual root devices don't need an fsck */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (major(st.st_dev) == 0)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        return 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                /* check if we are already writable */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                times[0] = st.st_atim;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                times[1] = st.st_mtim;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (utimensat(AT_FDCWD, "/", times, 0) == 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_info("Root directory is writable, skipping check.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        return 0;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (!(udev = udev_new())) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_oom();
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        goto finish;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (!(udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev))) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_error("Failed to detect root device.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        goto finish;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (!(device = udev_device_get_devnode(udev_device))) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_error("Failed to detect device node of root directory.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        goto finish;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                root_directory = true;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (arg_show_progress)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (pipe(progress_pipe) < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_error("pipe(): %m");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        goto finish;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        cmdline[i++] = "/sbin/fsck";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        cmdline[i++] = "-a";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        cmdline[i++] = "-T";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        cmdline[i++] = "-l";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (!root_directory)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                cmdline[i++] = "-M";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (arg_force)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                cmdline[i++] = "-f";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (progress_pipe[1] >= 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                snprintf(dash_c, sizeof(dash_c), "-C%i", progress_pipe[1]);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                char_array_0(dash_c);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                cmdline[i++] = dash_c;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        cmdline[i++] = device;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        cmdline[i++] = NULL;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        pid = fork();
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (pid < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                log_error("fork(): %m");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                goto finish;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        } else if (pid == 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                /* Child */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (progress_pipe[0] >= 0)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        close_nointr_nofail(progress_pipe[0]);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                execv(cmdline[0], (char**) cmdline);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                _exit(8); /* Operational error */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (progress_pipe[1] >= 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                close_nointr_nofail(progress_pipe[1]);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                progress_pipe[1] = -1;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (progress_pipe[0] >= 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                process_progress(progress_pipe[0]);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                progress_pipe[0] = -1;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        q = wait_for_terminate(pid, &status);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (q < 0) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                log_error("waitid(): %s", strerror(-q));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                goto finish;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (status.si_code != CLD_EXITED || (status.si_status & ~1)) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (status.si_code == CLD_KILLED || status.si_code == CLD_DUMPED)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_error("fsck terminated by signal %s.", signal_to_string(status.si_status));
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                else if (status.si_code == CLD_EXITED)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_error("fsck failed with error code %i.", status.si_status);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                else
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_error("fsck failed due to unknown reason.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                if (status.si_code == CLD_EXITED && (status.si_status & 2) && root_directory)
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        /* System should be rebooted. */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        start_target(SPECIAL_REBOOT_TARGET);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                else if (status.si_code == CLD_EXITED && (status.si_status & 6))
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        /* Some other problem */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        start_target(SPECIAL_EMERGENCY_TARGET);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                else {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        r = EXIT_SUCCESS;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                        log_warning("Ignoring error.");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                }
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        } else
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                r = EXIT_SUCCESS;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        if (status.si_code == CLD_EXITED && (status.si_status & 1))
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering                touch("/run/systemd/quotacheck");
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poetteringfinish:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        close_pipe(progress_pipe);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering        return r;
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering}
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering