chiark / gitweb /
fsck: disable "-l" option for now
[elogind.git] / src / fsck / fsck.c
index 10c968678b365fc5dc23ede1a3a7dac17d98d98f..cb2f5734ea069ddf11a0a9ddd17bfd44ce23ddb6 100644 (file)
@@ -4,6 +4,7 @@
   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 "bus-util.h"
 #include "bus-error.h"
 #include "bus-errors.h"
-#include "virt.h"
 #include "fileio.h"
 #include "udev-util.h"
+#include "path-util.h"
 
 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) {
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
@@ -73,42 +75,40 @@ static void start_target(const char *target) {
                 log_error("Failed to start unit: %s", bus_error_message(&error, -r));
 }
 
-static int parse_proc_cmdline(void) {
-        char *line, *w, *state;
-        int r;
-        size_t l;
+static int parse_proc_cmdline_item(const char *key, const char *value) {
 
-        if (detect_container(NULL) > 0)
-                return 0;
+        if (streq(key, "fsck.mode") && value) {
 
-        r = read_one_line_file("/proc/cmdline", &line);
-        if (r < 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))
+                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))
+                else if (streq(value, "skip"))
                         arg_skip = true;
-                else if (startswith(w, "fsck"))
-                        log_warning("Invalid fsck parameter. Ignoring.");
+                else
+                        log_warning("Invalid fsck.mode= parameter. Ignoring.");
+        } else if (streq(key, "fsck.repair") && value) {
+
+                if (streq(value, "preen"))
+                        arg_repair = "-a";
+                else if (streq(value, "yes"))
+                        arg_repair = "-y";
+                else if (streq(value, "no"))
+                        arg_repair = "-n";
+                else
+                        log_warning("Invalid fsck.repair= parameter. Ignoring.");
+        } else if (startswith(key, "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.");
-                        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;
-                }
-#endif
+        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
 
-        free(line);
         return 0;
 }
 
@@ -148,27 +148,25 @@ 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;
 
         f = fdopen(fd, "r");
         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)) {
                 int pass, m;
                 unsigned long cur, max;
-                char *device;
+                _cleanup_free_ char *device = NULL;
                 double p;
                 usec_t t;
 
@@ -177,20 +175,16 @@ static int process_progress(int fd) {
 
                 /* 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;
 
@@ -198,8 +192,6 @@ static int process_progress(int fd) {
                 fprintf(console, "\r%s: fsck %3.1f%% complete...\r%n", device, p, &m);
                 fflush(console);
 
-                free(device);
-
                 if (m > clear)
                         clear = m;
         }
@@ -214,8 +206,6 @@ static int process_progress(int fd) {
                 fflush(console);
         }
 
-        fclose(f);
-        fclose(console);
         return 0;
 }
 
@@ -226,10 +216,11 @@ int main(int argc, char *argv[]) {
         siginfo_t status;
         _cleanup_udev_unref_ struct udev *udev = NULL;
         _cleanup_udev_device_unref_ struct udev_device *udev_device = NULL;
-        const char *device;
+        const char *device, *type;
         bool root_directory;
         int progress_pipe[2] = { -1, -1 };
         char dash_c[2+10+1];
+        struct stat st;
 
         if (argc > 2) {
                 log_error("This program expects one or no arguments.");
@@ -242,66 +233,104 @@ int main(int argc, char *argv[]) {
 
         umask(0022);
 
-        parse_proc_cmdline();
+        parse_proc_cmdline(parse_proc_cmdline_item);
         test_files();
 
         if (!arg_force && arg_skip)
                 return 0;
 
+        udev = udev_new();
+        if (!udev) {
+                log_oom();
+                return EXIT_FAILURE;
+        }
+
         if (argc > 1) {
                 device = argv[1];
                 root_directory = false;
+
+                if (stat(device, &st) < 0) {
+                        log_error("Failed to stat '%s': %m", device);
+                        return EXIT_FAILURE;
+                }
+
+                udev_device = udev_device_new_from_devnum(udev, 'b', st.st_rdev);
+                if (!udev_device) {
+                        log_error("Failed to detect device %s", device);
+                        return EXIT_FAILURE;
+                }
         } else {
-                struct stat st;
                 struct timespec times[2];
 
                 /* Find root device */
 
                 if (stat("/", &st) < 0) {
                         log_error("Failed to stat() the root directory: %m");
-                        goto finish;
+                        return EXIT_FAILURE;
                 }
 
                 /* Virtual root devices don't need an fsck */
                 if (major(st.st_dev) == 0)
-                        return 0;
+                        return EXIT_SUCCESS;
 
                 /* 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;
+                        return EXIT_SUCCESS;
                 }
 
-                if (!(udev = udev_new())) {
-                        log_oom();
-                        goto finish;
-                }
-
-                if (!(udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev))) {
+                udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev);
+                if (!udev_device) {
                         log_error("Failed to detect root device.");
-                        goto finish;
+                        return EXIT_FAILURE;
                 }
 
-                if (!(device = udev_device_get_devnode(udev_device))) {
+                device = udev_device_get_devnode(udev_device);
+                if (!device) {
                         log_error("Failed to detect device node of root directory.");
-                        goto finish;
+                        return EXIT_FAILURE;
                 }
 
                 root_directory = true;
         }
 
+        type = udev_device_get_property_value(udev_device, "ID_FS_TYPE");
+        if (type) {
+                r = fsck_exists(type);
+                if (r < 0) {
+                        if (r == -ENOENT) {
+                                log_info("fsck.%s doesn't exist, not checking file system on %s",
+                                         type, device);
+                                return EXIT_SUCCESS;
+                        } else
+                                log_warning("fsck.%s cannot be used for %s: %s",
+                                            type, device, strerror(-r));
+                }
+        }
+
         if (arg_show_progress)
                 if (pipe(progress_pipe) < 0) {
                         log_error("pipe(): %m");
-                        goto finish;
+                        return EXIT_FAILURE;
                 }
 
         cmdline[i++] = "/sbin/fsck";
-        cmdline[i++] = "-a";
+        cmdline[i++] =  arg_repair;
         cmdline[i++] = "-T";
-        cmdline[i++] = "-l";
+
+        /*
+         * Disable locking which conflict with udev's event
+         * ownershipi, until util-linux moves the flock
+         * synchronization file which prevents multiple fsck running
+         * on the same rotationg media, from the disk device
+         * node to a privately owned regular file.
+         *
+         * https://bugs.freedesktop.org/show_bug.cgi?id=79576#c5
+         *
+         * cmdline[i++] = "-l";
+         */
 
         if (!root_directory)
                 cmdline[i++] = "-M";
@@ -325,15 +354,12 @@ int main(int argc, char *argv[]) {
         } else if (pid == 0) {
                 /* Child */
                 if (progress_pipe[0] >= 0)
-                        close_nointr_nofail(progress_pipe[0]);
+                        safe_close(progress_pipe[0]);
                 execv(cmdline[0], (char**) cmdline);
                 _exit(8); /* Operational error */
         }
 
-        if (progress_pipe[1] >= 0) {
-                close_nointr_nofail(progress_pipe[1]);
-                progress_pipe[1] = -1;
-        }
+        progress_pipe[1] = safe_close(progress_pipe[1]);
 
         if (progress_pipe[0] >= 0) {
                 process_progress(progress_pipe[0]);
@@ -373,7 +399,7 @@ int main(int argc, char *argv[]) {
                 touch("/run/systemd/quotacheck");
 
 finish:
-        close_pipe(progress_pipe);
+        safe_close_pair(progress_pipe);
 
         return r;
 }