Adding upstream version 2.39.3.upstream/2.39.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1711 insertions, 0 deletions

diff --git a/disk-utils/fsck.c b/disk-utils/fsck.c
new file mode 100644
index 0000000..57e0758
--- /dev/null
+++ b/disk-utils/fsck.c
@@ -0,0 +1,1711 @@
+/*
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This program 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.
+ *
+ * fsck --- A generic, parallelizing front-end for the fsck program.
+ * It will automatically try to run fsck programs in parallel if the
+ * devices are on separate spindles.  It is based on the same ideas as
+ * the generic front end for fsck by David Engel and Fred van Kempen,
+ * but it has been completely rewritten from scratch to support
+ * parallel execution.
+ *
+ * Written by Theodore Ts'o, <tytso@mit.edu>
+ *
+ * Miquel van Smoorenburg (miquels@drinkel.ow.org) 20-Oct-1994:
+ *   o Changed -t fstype to behave like with mount when -A (all file
+ *     systems) or -M (like mount) is specified.
+ *   o fsck looks if it can find the fsck.type program to decide
+ *     if it should ignore the fs type. This way more fsck programs
+ *     can be added without changing this front-end.
+ *   o -R flag skip root file system.
+ *
+ * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ *	         2001, 2002, 2003, 2004, 2005 by  Theodore Ts'o.
+ *
+ * Copyright (C) 2009-2014 Karel Zak <kzak@redhat.com>
+ */
+#define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <sys/file.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <time.h>
+#include <stdlib.h>
+#include <paths.h>
+#include <unistd.h>
+#include <errno.h>
+#include <signal.h>
+#include <dirent.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <blkid.h>
+#include <libmount.h>
+
+#include "nls.h"
+#include "pathnames.h"
+#include "exitcodes.h"
+#include "c.h"
+#include "fileutils.h"
+#include "monotonic.h"
+#include "strutils.h"
+
+#define XALLOC_EXIT_CODE	FSCK_EX_ERROR
+#include "xalloc.h"
+
+#define CLOSE_EXIT_CODE		FSCK_EX_ERROR
+#include "closestream.h"
+
+#ifndef DEFAULT_FSTYPE
+# define DEFAULT_FSTYPE	"ext2"
+#endif
+
+#define MAX_DEVICES 32
+#define MAX_ARGS 32
+
+#define FSCK_RUNTIME_DIRNAME	"/run/fsck"
+
+static const char *ignored_types[] = {
+	"ignore",
+	"iso9660",
+	"sw",
+	NULL
+};
+
+static const char *really_wanted[] = {
+	"minix",
+	"ext2",
+	"ext3",
+	"ext4",
+	"ext4dev",
+	"jfs",
+	"reiserfs"
+};
+
+/*
+ * Internal structure for mount table entries.
+ */
+struct fsck_fs_data
+{
+	const char	*device;
+	dev_t		disk;
+	unsigned int	stacked:1,
+			done:1,
+			eval_device:1;
+};
+
+/*
+ * Structure to allow exit codes to be stored
+ */
+struct fsck_instance {
+	int	pid;
+	int	flags;		/* FLAG_{DONE|PROGRESS} */
+
+	int	lock;		/* flock()ed lockpath file descriptor or -1 */
+	char	*lockpath;	/* /run/fsck/<diskname>.lock or NULL */
+
+	int	exit_status;
+	struct timeval start_time;
+	struct timeval end_time;
+	char *	prog;
+	char *	type;
+
+	struct rusage rusage;
+	struct libmnt_fs *fs;
+	struct fsck_instance *next;
+};
+
+#define FLAG_DONE 1
+#define FLAG_PROGRESS 2
+
+/*
+ * Global variables for options
+ */
+static char *devices[MAX_DEVICES];
+static char *args[MAX_ARGS];
+static int num_devices, num_args;
+
+static int lockdisk;
+static int verbose;
+static int doall;
+static int noexecute;
+static int serialize;
+static int skip_root;
+static int ignore_mounted;
+static int notitle;
+static int parallel_root;
+static int progress;
+static int progress_fd;
+static int force_all_parallel;
+static int report_stats;
+static FILE *report_stats_file;
+
+static int num_running;
+static int max_running;
+
+static volatile sig_atomic_t cancel_requested;
+static int kill_sent;
+static char *fstype;
+static struct fsck_instance *instance_list;
+
+#define FSCK_DEFAULT_PATH "/sbin"
+static char *fsck_path;
+
+
+/* parsed fstab and mtab */
+static struct libmnt_table *fstab, *mtab;
+static struct libmnt_cache *mntcache;
+
+static int count_slaves(dev_t disk);
+
+static int string_to_int(const char *s)
+{
+	long l;
+	char *p;
+
+	errno = 0;
+	l = strtol(s, &p, 0);
+	if (errno || *p || l == LONG_MIN || l == LONG_MAX || l < 0 || l > INT_MAX)
+		return -1;
+
+	return (int) l;
+}
+
+/* Do we really really want to check this fs? */
+static int fs_check_required(const char *type)
+{
+	size_t i;
+
+	for(i = 0; i < ARRAY_SIZE(really_wanted); i++) {
+		if (strcmp(type, really_wanted[i]) == 0)
+			return 1;
+	}
+
+	return 0;
+}
+
+static int is_mounted(struct libmnt_fs *fs)
+{
+	int rc;
+	const char *src;
+
+	src = mnt_fs_get_source(fs);
+	if (!src)
+		return 0;
+	if (!mntcache)
+		mntcache = mnt_new_cache();
+	if (!mtab) {
+		mtab = mnt_new_table();
+		if (!mtab)
+			err(FSCK_EX_ERROR, ("failed to initialize libmount table"));
+		mnt_table_set_cache(mtab, mntcache);
+		mnt_table_parse_mtab(mtab, NULL);
+	}
+
+	rc = mnt_table_find_source(mtab, src, MNT_ITER_BACKWARD) ? 1 : 0;
+	if (verbose) {
+		if (rc)
+			printf(_("%s is mounted\n"), src);
+		else
+			printf(_("%s is not mounted\n"), src);
+	}
+	return rc;
+}
+
+static int ignore(struct libmnt_fs *);
+
+static struct fsck_fs_data *fs_create_data(struct libmnt_fs *fs)
+{
+	struct fsck_fs_data *data = mnt_fs_get_userdata(fs);
+
+	if (!data) {
+		data = xcalloc(1, sizeof(*data));
+		mnt_fs_set_userdata(fs, data);
+	}
+	return data;
+}
+
+/*
+ * fs from fstab might contains real device name as well as symlink,
+ * LABEL or UUID, this function returns canonicalized result.
+ */
+static const char *fs_get_device(struct libmnt_fs *fs)
+{
+	struct fsck_fs_data *data = mnt_fs_get_userdata(fs);
+
+	if (!data || !data->eval_device) {
+		const char *spec = mnt_fs_get_source(fs);
+
+		if (!data)
+			data = fs_create_data(fs);
+
+		data->eval_device = 1;
+		data->device = mnt_resolve_spec(spec, mnt_table_get_cache(fstab));
+		if (!data->device)
+			data->device = xstrdup(spec);
+	}
+
+	return data->device;
+}
+
+static dev_t fs_get_disk(struct libmnt_fs *fs, int check)
+{
+	struct fsck_fs_data *data;
+	const char *device;
+	struct stat st;
+
+	data = mnt_fs_get_userdata(fs);
+	if (data && data->disk)
+		return data->disk;
+
+	if (!check)
+		return 0;
+
+	if (mnt_fs_is_netfs(fs) || mnt_fs_is_pseudofs(fs))
+		return 0;
+
+	device = fs_get_device(fs);
+	if (!device)
+		return 0;
+
+	data = fs_create_data(fs);
+
+	if (!stat(device, &st) &&
+	    !blkid_devno_to_wholedisk(st.st_rdev, NULL, 0, &data->disk)) {
+
+		if (data->disk)
+			data->stacked = count_slaves(data->disk) > 0 ? 1 : 0;
+		return data->disk;
+	}
+	return 0;
+}
+
+static int fs_is_stacked(struct libmnt_fs *fs)
+{
+	struct fsck_fs_data *data = mnt_fs_get_userdata(fs);
+	return data ? data->stacked : 0;
+}
+
+static int fs_is_done(struct libmnt_fs *fs)
+{
+	struct fsck_fs_data *data = mnt_fs_get_userdata(fs);
+	return data ? data->done : 0;
+}
+
+static void fs_set_done(struct libmnt_fs *fs)
+{
+	struct fsck_fs_data *data = fs_create_data(fs);
+
+	if (data)
+		data->done = 1;
+}
+
+static int is_irrotational_disk(dev_t disk)
+{
+	char path[PATH_MAX];
+	FILE *f;
+	int rc, x;
+
+
+	rc = snprintf(path, sizeof(path),
+			"/sys/dev/block/%d:%d/queue/rotational",
+			major(disk), minor(disk));
+
+	if (rc < 0 || (unsigned int) rc >= sizeof(path))
+		return 0;
+
+	f = fopen(path, "r");
+	if (!f)
+		return 0;
+
+	rc = fscanf(f, "%d", &x);
+	if (rc != 1) {
+		if (ferror(f))
+			warn(_("cannot read %s"), path);
+		else
+			warnx(_("parse error: %s"), path);
+	}
+	fclose(f);
+
+	return rc == 1 ? !x : 0;
+}
+
+static void lock_disk(struct fsck_instance *inst)
+{
+	dev_t disk = fs_get_disk(inst->fs, 1);
+	char *diskpath = NULL, *diskname;
+
+	inst->lock = -1;
+
+	if (!disk || is_irrotational_disk(disk))
+		goto done;
+
+	diskpath = blkid_devno_to_devname(disk);
+	if (!diskpath)
+		goto done;
+
+	if (access(FSCK_RUNTIME_DIRNAME, F_OK) != 0) {
+		int rc = mkdir(FSCK_RUNTIME_DIRNAME,
+				    S_IWUSR|
+				    S_IRUSR|S_IRGRP|S_IROTH|
+				    S_IXUSR|S_IXGRP|S_IXOTH);
+		if (rc && errno != EEXIST) {
+			warn(_("cannot create directory %s"),
+					FSCK_RUNTIME_DIRNAME);
+			goto done;
+		}
+	}
+
+	diskname = stripoff_last_component(diskpath);
+	if (!diskname)
+		diskname = diskpath;
+
+	xasprintf(&inst->lockpath, FSCK_RUNTIME_DIRNAME "/%s.lock", diskname);
+
+	if (verbose)
+		printf(_("Locking disk by %s ... "), inst->lockpath);
+
+	inst->lock = open(inst->lockpath, O_RDONLY|O_CREAT|O_CLOEXEC,
+				    S_IWUSR|S_IRUSR|S_IRGRP|S_IROTH);
+	if (inst->lock >= 0) {
+		int rc = -1;
+
+		/* inform users that we're waiting on the lock */
+		if (verbose &&
+		    (rc = flock(inst->lock, LOCK_EX | LOCK_NB)) != 0 &&
+		    errno == EWOULDBLOCK)
+			printf(_("(waiting) "));
+
+		if (rc != 0 && flock(inst->lock, LOCK_EX) != 0) {
+			close(inst->lock);			/* failed */
+			inst->lock = -1;
+		}
+	}
+
+	if (verbose)
+		/* TRANSLATORS: These are followups to "Locking disk...". */
+		printf("%s.\n", inst->lock >= 0 ? _("succeeded") : _("failed"));
+
+
+done:
+	if (inst->lock < 0) {
+		free(inst->lockpath);
+		inst->lockpath = NULL;
+	}
+	free(diskpath);
+}
+
+static void unlock_disk(struct fsck_instance *inst)
+{
+	if (inst->lock < 0)
+		return;
+
+	if (verbose)
+		printf(_("Unlocking %s.\n"), inst->lockpath);
+
+	close(inst->lock);			/* unlock */
+
+	free(inst->lockpath);
+
+	inst->lock = -1;
+	inst->lockpath = NULL;
+}
+
+static void free_instance(struct fsck_instance *i)
+{
+	if (lockdisk)
+		unlock_disk(i);
+	free(i->prog);
+	free(i->lockpath);
+	mnt_unref_fs(i->fs);
+	free(i);
+}
+
+static struct libmnt_fs *add_dummy_fs(const char *device)
+{
+	struct libmnt_fs *fs = mnt_new_fs();
+
+	if (fs && mnt_fs_set_source(fs, device) == 0 &&
+				  mnt_table_add_fs(fstab, fs) == 0) {
+		mnt_unref_fs(fs);
+		return fs;
+	}
+
+	mnt_unref_fs(fs);
+	err(FSCK_EX_ERROR, _("failed to setup description for %s"), device);
+}
+
+static void fs_interpret_type(struct libmnt_fs *fs)
+{
+	const char *device;
+	const char *type = mnt_fs_get_fstype(fs);
+
+	if (type && strcmp(type, "auto") != 0)
+		return;
+
+	mnt_fs_set_fstype(fs, NULL);
+
+	device = fs_get_device(fs);
+	if (device) {
+		int ambi = 0;
+		char *tp;
+		struct libmnt_cache *cache = mnt_table_get_cache(fstab);
+
+		tp = mnt_get_fstype(device, &ambi, cache);
+		if (!ambi)
+			mnt_fs_set_fstype(fs, tp);
+		if (!cache)
+			free(tp);
+	}
+}
+
+static int parser_errcb(struct libmnt_table *tb __attribute__ ((__unused__)),
+			const char *filename, int line)
+{
+	warnx(_("%s: parse error at line %d -- ignored"), filename, line);
+	return 1;
+}
+
+/*
+ * Load the filesystem database from /etc/fstab
+ */
+static void load_fs_info(void)
+{
+	const char *path;
+
+	fstab = mnt_new_table();
+	if (!fstab)
+		err(FSCK_EX_ERROR, ("failed to initialize libmount table"));
+
+	mnt_table_set_parser_errcb(fstab, parser_errcb);
+	mnt_table_set_cache(fstab, mntcache);
+
+	errno = 0;
+
+	/*
+	 * Let's follow libmount defaults if $FSTAB_FILE is not specified
+	 */
+	path = getenv("FSTAB_FILE");
+
+	if (mnt_table_parse_fstab(fstab, path)) {
+		if (!path)
+			path = mnt_get_fstab_path();
+
+		/* don't print error when there is no fstab at all */
+		if (access(path, F_OK) == 0) {
+			if (errno)
+				warn(_("%s: failed to parse fstab"), path);
+			else
+				warnx(_("%s: failed to parse fstab"), path);
+		}
+	}
+}
+
+/*
+ * Lookup filesys in /etc/fstab and return the corresponding entry.
+ * The @path has to be real path (no TAG) by mnt_resolve_spec().
+ */
+static struct libmnt_fs *lookup(char *path)
+{
+	struct libmnt_fs *fs;
+
+	if (!path)
+		return NULL;
+
+	fs = mnt_table_find_srcpath(fstab, path, MNT_ITER_FORWARD);
+	if (!fs) {
+		/*
+		 * Maybe mountpoint has been specified on fsck command line.
+		 * Yeah, crazy feature...
+		 *
+		 * Note that mnt_table_find_target() may canonicalize paths in
+		 * the fstab to support symlinks. This is really unwanted,
+		 * because readlink() on mountpoints may trigger automounts.
+		 *
+		 * So, disable the cache and compare the paths as strings
+		 * without care about symlinks...
+		 */
+		mnt_table_set_cache(fstab, NULL);
+		fs = mnt_table_find_target(fstab, path, MNT_ITER_FORWARD);
+		mnt_table_set_cache(fstab, mntcache);
+	}
+	return fs;
+}
+
+/* Find fsck program for a given fs type. */
+static int find_fsck(const char *type, char **progpath)
+{
+	char *s;
+	const char *tpl;
+	char *prog = NULL;
+	char *p = xstrdup(fsck_path);
+	int rc;
+
+	/* Are we looking for a program or just a type? */
+	tpl = (strncmp(type, "fsck.", 5) ? "%s/fsck.%s" : "%s/%s");
+
+	for(s = strtok(p, ":"); s; s = strtok(NULL, ":")) {
+		xasprintf(&prog, tpl, s, type);
+		if (access(prog, X_OK) == 0)
+			break;
+		free(prog);
+		prog = NULL;
+	}
+
+	free(p);
+	rc = prog ? 1 : 0;
+
+	if (progpath)
+		*progpath = prog;
+	else
+		free(prog);
+
+	return rc;
+}
+
+static int progress_active(void)
+{
+	struct fsck_instance *inst;
+
+	for (inst = instance_list; inst; inst = inst->next) {
+		if (inst->flags & FLAG_DONE)
+			continue;
+		if (inst->flags & FLAG_PROGRESS)
+			return 1;
+	}
+	return 0;
+}
+
+/*
+ * Process run statistics for finished fsck instances.
+ *
+ * If report_stats is 0, do nothing, otherwise print a selection of
+ * interesting rusage statistics as well as elapsed wallclock time.
+ */
+static void print_stats(struct fsck_instance *inst)
+{
+	struct timeval delta;
+
+	if (!inst || !report_stats || noexecute)
+		return;
+
+	timersub(&inst->end_time, &inst->start_time, &delta);
+
+	if (report_stats_file)
+		fprintf(report_stats_file, "%s %d %ld"
+				   " %"PRId64".%06"PRId64
+				   " %"PRId64".%06"PRId64
+				   " %"PRId64".%06"PRId64"\n",
+			fs_get_device(inst->fs),
+			inst->exit_status,
+			inst->rusage.ru_maxrss,
+			(int64_t)delta.tv_sec, (int64_t)delta.tv_usec,
+			(int64_t)inst->rusage.ru_utime.tv_sec,
+			(int64_t)inst->rusage.ru_utime.tv_usec,
+			(int64_t)inst->rusage.ru_stime.tv_sec,
+			(int64_t)inst->rusage.ru_stime.tv_usec);
+	else
+		fprintf(stdout, "%s: status %d, rss %ld, "
+				"real %"PRId64".%06"PRId64", "
+				"user %"PRId64".%06"PRId64", "
+				"sys %"PRId64".%06"PRId64"\n",
+			fs_get_device(inst->fs),
+			inst->exit_status,
+			inst->rusage.ru_maxrss,
+			(int64_t)delta.tv_sec, (int64_t)delta.tv_usec,
+			(int64_t)inst->rusage.ru_utime.tv_sec,
+			(int64_t)inst->rusage.ru_utime.tv_usec,
+			(int64_t)inst->rusage.ru_stime.tv_sec,
+			(int64_t)inst->rusage.ru_stime.tv_usec);
+}
+
+/*
+ * Execute a particular fsck program, and link it into the list of
+ * child processes we are waiting for.
+ */
+static int execute(const char *progname, const char *progpath,
+		   const char *type, struct libmnt_fs *fs, int interactive)
+{
+	char *argv[80];
+	int  argc, i;
+	struct fsck_instance *inst, *p;
+	pid_t	pid;
+
+	inst = xcalloc(1, sizeof(*inst));
+
+	argv[0] = xstrdup(progname);
+	argc = 1;
+
+	for (i=0; i <num_args; i++)
+		argv[argc++] = xstrdup(args[i]);
+
+	if (progress &&
+	       ((strcmp(type, "ext2") == 0) ||
+		(strcmp(type, "ext3") == 0) ||
+		(strcmp(type, "ext4") == 0) ||
+		(strcmp(type, "ext4dev") == 0))) {
+
+		char tmp[80];
+		tmp[0] = 0;
+		if (!progress_active()) {
+			snprintf(tmp, 80, "-C%d", progress_fd);
+			inst->flags |= FLAG_PROGRESS;
+		} else if (progress_fd)
+			snprintf(tmp, 80, "-C%d", progress_fd * -1);
+		if (tmp[0])
+			argv[argc++] = xstrdup(tmp);
+	}
+
+	argv[argc++] = xstrdup(fs_get_device(fs));
+	argv[argc] = NULL;
+
+	if (verbose || noexecute) {
+		const char *tgt = mnt_fs_get_target(fs);
+
+		if (!tgt)
+			tgt = fs_get_device(fs);
+		printf("[%s (%d) -- %s] ", progpath, num_running, tgt);
+		for (i=0; i < argc; i++)
+			printf("%s ", argv[i]);
+		printf("\n");
+	}
+
+	mnt_ref_fs(fs);
+	inst->fs = fs;
+	inst->lock = -1;
+
+	if (lockdisk)
+		lock_disk(inst);
+
+	/* Fork and execute the correct program. */
+	if (noexecute)
+		pid = -1;
+	else if ((pid = fork()) < 0) {
+		warn(_("fork failed"));
+		free_instance(inst);
+		return errno;
+	} else if (pid == 0) {
+		if (!interactive)
+			close(0);
+		execv(progpath, argv);
+		err(FSCK_EX_ERROR, _("%s: execute failed"), progpath);
+	}
+
+	for (i=0; i < argc; i++)
+		free(argv[i]);
+
+	inst->pid = pid;
+	inst->prog = xstrdup(progname);
+	inst->type = xstrdup(type);
+	gettime_monotonic(&inst->start_time);
+	inst->next = NULL;
+
+	/*
+	 * Find the end of the list, so we add the instance on at the end.
+	 */
+	for (p = instance_list; p && p->next; p = p->next);
+
+	if (p)
+		p->next = inst;
+	else
+		instance_list = inst;
+
+	return 0;
+}
+
+/*
+ * Send a signal to all outstanding fsck child processes
+ */
+static int kill_all(int signum)
+{
+	struct fsck_instance *inst;
+	int	n = 0;
+
+	for (inst = instance_list; inst; inst = inst->next) {
+		if (inst->flags & FLAG_DONE)
+			continue;
+		if (inst->pid <= 0)
+			continue;
+		kill(inst->pid, signum);
+		n++;
+	}
+	return n;
+}
+
+/*
+ * Wait for one child process to exit; when it does, unlink it from
+ * the list of executing child processes, and return it.
+ */
+static struct fsck_instance *wait_one(int flags)
+{
+	int	status = 0;
+	int	sig;
+	struct fsck_instance *inst, *inst2, *prev;
+	pid_t	pid;
+	struct rusage rusage;
+
+	if (!instance_list)
+		return NULL;
+
+	if (noexecute) {
+		inst = instance_list;
+		prev = NULL;
+#ifdef RANDOM_DEBUG
+		while (inst->next && (random() & 1)) {
+			prev = inst;
+			inst = inst->next;
+		}
+#endif
+		inst->exit_status = 0;
+		goto ret_inst;
+	}
+
+	/*
+	 * gcc -Wall fails saving throw against stupidity
+	 * (inst and prev are thought to be uninitialized variables)
+	 */
+	inst = prev = NULL;
+
+	do {
+		pid = wait4(-1, &status, flags, &rusage);
+		if (cancel_requested && !kill_sent) {
+			kill_all(SIGTERM);
+			kill_sent++;
+		}
+		if ((pid == 0) && (flags & WNOHANG))
+			return NULL;
+		if (pid < 0) {
+			if ((errno == EINTR) || (errno == EAGAIN))
+				continue;
+			if (errno == ECHILD) {
+				warnx(_("wait: no more child process?!?"));
+				return NULL;
+			}
+			warn(_("waitpid failed"));
+			continue;
+		}
+		for (prev = NULL, inst = instance_list;
+		     inst;
+		     prev = inst, inst = inst->next) {
+			if (inst->pid == pid)
+				break;
+		}
+	} while (!inst);
+
+	if (WIFEXITED(status))
+		status = WEXITSTATUS(status);
+	else if (WIFSIGNALED(status)) {
+		sig = WTERMSIG(status);
+		if (sig == SIGINT) {
+			status = FSCK_EX_UNCORRECTED;
+		} else {
+			warnx(_("Warning... %s for device %s exited "
+			       "with signal %d."),
+			       inst->prog, fs_get_device(inst->fs), sig);
+			status = FSCK_EX_ERROR;
+		}
+	} else {
+		warnx(_("%s %s: status is %x, should never happen."),
+		       inst->prog, fs_get_device(inst->fs), status);
+		status = FSCK_EX_ERROR;
+	}
+
+	inst->exit_status = status;
+	inst->flags |= FLAG_DONE;
+	gettime_monotonic(&inst->end_time);
+	memcpy(&inst->rusage, &rusage, sizeof(struct rusage));
+
+	if (progress && (inst->flags & FLAG_PROGRESS) &&
+	    !progress_active()) {
+		for (inst2 = instance_list; inst2; inst2 = inst2->next) {
+			if (inst2->flags & FLAG_DONE)
+				continue;
+			if (strcmp(inst2->type, "ext2") != 0 &&
+			    strcmp(inst2->type, "ext3") &&
+			    strcmp(inst2->type, "ext4") != 0 &&
+			    strcmp(inst2->type, "ext4dev") != 0)
+				continue;
+			/*
+			 * If we've just started the fsck, wait a tiny
+			 * bit before sending the kill, to give it
+			 * time to set up the signal handler
+			 */
+			if (inst2->start_time.tv_sec < time(NULL) + 2) {
+				if (fork() == 0) {
+					sleep(1);
+					kill(inst2->pid, SIGUSR1);
+					exit(FSCK_EX_OK);
+				}
+			} else
+				kill(inst2->pid, SIGUSR1);
+			inst2->flags |= FLAG_PROGRESS;
+			break;
+		}
+	}
+ret_inst:
+	if (prev)
+		prev->next = inst->next;
+	else
+		instance_list = inst->next;
+
+	print_stats(inst);
+
+	if (verbose > 1)
+		printf(_("Finished with %s (exit status %d)\n"),
+		       fs_get_device(inst->fs), inst->exit_status);
+	num_running--;
+	return inst;
+}
+
+#define FLAG_WAIT_ALL		0
+#define FLAG_WAIT_ATLEAST_ONE	1
+/*
+ * Wait until all executing child processes have exited; return the
+ * logical OR of all of their exit code values.
+ */
+static int wait_many(int flags)
+{
+	struct fsck_instance *inst;
+	int	global_status = 0;
+	int	wait_flags = 0;
+
+	while ((inst = wait_one(wait_flags))) {
+		global_status |= inst->exit_status;
+		free_instance(inst);
+#ifdef RANDOM_DEBUG
+		if (noexecute && (flags & WNOHANG) && !(random() % 3))
+			break;
+#endif
+		if (flags & FLAG_WAIT_ATLEAST_ONE)
+			wait_flags = WNOHANG;
+	}
+	return global_status;
+}
+
+/*
+ * Run the fsck program on a particular device
+ *
+ * If the type is specified using -t, and it isn't prefixed with "no"
+ * (as in "noext2") and only one filesystem type is specified, then
+ * use that type regardless of what is specified in /etc/fstab.
+ *
+ * If the type isn't specified by the user, then use either the type
+ * specified in /etc/fstab, or DEFAULT_FSTYPE.
+ */
+static int fsck_device(struct libmnt_fs *fs, int interactive)
+{
+	char *progname, *progpath;
+	const char *type;
+	int retval;
+
+	fs_interpret_type(fs);
+
+	type = mnt_fs_get_fstype(fs);
+
+	if (type && strcmp(type, "auto") != 0)
+		;
+	else if (fstype && strncmp(fstype, "no", 2) != 0 &&
+	    strncmp(fstype, "opts=", 5) != 0 && strncmp(fstype, "loop", 4) != 0 &&
+	    !strchr(fstype, ','))
+		type = fstype;
+	else
+		type = DEFAULT_FSTYPE;
+
+	xasprintf(&progname, "fsck.%s", type);
+
+	if (!find_fsck(progname, &progpath)) {
+		free(progname);
+		if (fs_check_required(type)) {
+			retval = ENOENT;
+			goto err;
+		}
+		return 0;
+	}
+
+	num_running++;
+	retval = execute(progname, progpath, type, fs, interactive);
+	free(progname);
+	free(progpath);
+	if (retval) {
+		num_running--;
+		goto err;
+	}
+	return 0;
+err:
+	warnx(_("error %d (%s) while executing fsck.%s for %s"),
+			retval, strerror(errno), type, fs_get_device(fs));
+	return FSCK_EX_ERROR;
+}
+
+
+/*
+ * Deal with the fsck -t argument.
+ */
+static struct fs_type_compile {
+	char **list;
+	int *type;
+	int  negate;
+} fs_type_compiled;
+
+#define FS_TYPE_NORMAL	0
+#define FS_TYPE_OPT	1
+#define FS_TYPE_NEGOPT	2
+
+static void compile_fs_type(char *fs_type, struct fs_type_compile *cmp)
+{
+	char	*cp, *list, *s;
+	int	num = 2;
+	int	negate, first_negate = 1;
+
+	if (fs_type) {
+		for (cp=fs_type; *cp; cp++) {
+			if (*cp == ',')
+				num++;
+		}
+	}
+
+	cmp->list = xcalloc(num, sizeof(char *));
+	cmp->type = xcalloc(num, sizeof(int));
+	cmp->negate = 0;
+
+	if (!fs_type)
+		return;
+
+	list = xstrdup(fs_type);
+	num = 0;
+	s = strtok(list, ",");
+	while(s) {
+		negate = 0;
+		if (strncmp(s, "no", 2) == 0) {
+			s += 2;
+			negate = 1;
+		} else if (*s == '!') {
+			s++;
+			negate = 1;
+		}
+		if (strcmp(s, "loop") == 0)
+			/* loop is really short-hand for opts=loop */
+			goto loop_special_case;
+		else if (strncmp(s, "opts=", 5) == 0) {
+			s += 5;
+		loop_special_case:
+			cmp->type[num] = negate ? FS_TYPE_NEGOPT : FS_TYPE_OPT;
+		} else {
+			if (first_negate) {
+				cmp->negate = negate;
+				first_negate = 0;
+			}
+			if ((negate && !cmp->negate) ||
+			    (!negate && cmp->negate)) {
+				errx(FSCK_EX_USAGE,
+					_("Either all or none of the filesystem types passed to -t must be prefixed\n"
+					  "with 'no' or '!'."));
+			}
+		}
+
+		cmp->list[num++] = xstrdup(s);
+		s = strtok(NULL, ",");
+	}
+	free(list);
+}
+
+/*
+ * This function returns true if a particular option appears in a
+ * comma-delimited options list
+ */
+static int opt_in_list(const char *opt, const char *optlist)
+{
+	char	*list, *s;
+
+	if (!optlist)
+		return 0;
+	list = xstrdup(optlist);
+
+	s = strtok(list, ",");
+	while(s) {
+		if (strcmp(s, opt) == 0) {
+			free(list);
+			return 1;
+		}
+		s = strtok(NULL, ",");
+	}
+	free(list);
+	return 0;
+}
+
+/* See if the filesystem matches the criteria given by the -t option */
+static int fs_match(struct libmnt_fs *fs, struct fs_type_compile *cmp)
+{
+	int n, ret = 0, checked_type = 0;
+	char *cp;
+
+	if (cmp->list == NULL || cmp->list[0] == NULL)
+		return 1;
+
+	for (n=0; (cp = cmp->list[n]); n++) {
+		switch (cmp->type[n]) {
+		case FS_TYPE_NORMAL:
+		{
+			const char *type = mnt_fs_get_fstype(fs);
+
+			checked_type++;
+			if (type && strcmp(cp, type) == 0)
+				ret = 1;
+			break;
+		}
+		case FS_TYPE_NEGOPT:
+			if (opt_in_list(cp, mnt_fs_get_options(fs)))
+				return 0;
+			break;
+		case FS_TYPE_OPT:
+			if (!opt_in_list(cp, mnt_fs_get_options(fs)))
+				return 0;
+			break;
+		}
+	}
+	if (checked_type == 0)
+		return 1;
+	return (cmp->negate ? !ret : ret);
+}
+
+/*
+ * Check if a device exists
+ */
+static int device_exists(const char *device)
+{
+	struct stat st;
+
+	if (stat(device, &st) == -1)
+		return 0;
+	if (!S_ISBLK(st.st_mode))
+		return 0;
+	return 1;
+}
+
+static int fs_ignored_type(struct libmnt_fs *fs)
+{
+	const char **ip, *type;
+
+	if (!mnt_fs_is_regularfs(fs))
+		return 1;
+
+	type = mnt_fs_get_fstype(fs);
+
+	for(ip = ignored_types; type && *ip; ip++) {
+		if (strcmp(type, *ip) == 0)
+			return 1;
+	}
+
+	return 0;
+}
+
+/* Check if we should ignore this filesystem. */
+static int ignore(struct libmnt_fs *fs)
+{
+	const char *type;
+
+	/*
+	 * If the pass number is 0, ignore it.
+	 */
+	if (mnt_fs_get_passno(fs) == 0)
+		return 1;
+
+	/*
+	 * If this is a bind mount, ignore it.
+	 */
+	if (opt_in_list("bind", mnt_fs_get_options(fs))) {
+		warnx(_("%s: skipping bad line in /etc/fstab: "
+			"bind mount with nonzero fsck pass number"),
+			mnt_fs_get_target(fs));
+		return 1;
+	}
+
+	/*
+	 * ignore devices that don't exist and have the "nofail" mount option
+	 */
+	if (!device_exists(fs_get_device(fs))) {
+		if (opt_in_list("nofail", mnt_fs_get_options(fs))) {
+			if (verbose)
+				printf(_("%s: skipping nonexistent device\n"),
+							fs_get_device(fs));
+			return 1;
+		}
+		if (verbose)
+			printf(_("%s: nonexistent device (\"nofail\" fstab "
+				 "option may be used to skip this device)\n"),
+				fs_get_device(fs));
+	}
+
+	fs_interpret_type(fs);
+
+	/*
+	 * If a specific fstype is specified, and it doesn't match,
+	 * ignore it.
+	 */
+	if (!fs_match(fs, &fs_type_compiled))
+		return 1;
+
+	type = mnt_fs_get_fstype(fs);
+	if (!type) {
+		if (verbose)
+			printf(_("%s: skipping unknown filesystem type\n"),
+				fs_get_device(fs));
+		return 1;
+	}
+
+	/* Are we ignoring this type? */
+	if (fs_ignored_type(fs))
+		return 1;
+
+
+
+	/* See if the <fsck.fs> program is available. */
+	if (!find_fsck(type, NULL)) {
+		if (fs_check_required(type))
+			warnx(_("cannot check %s: fsck.%s not found"),
+				fs_get_device(fs), type);
+		return 1;
+	}
+
+	/* We can and want to check this file system type. */
+	return 0;
+}
+
+static int count_slaves(dev_t disk)
+{
+	DIR *dir;
+	struct dirent *dp;
+	char dirname[PATH_MAX];
+	int count = 0;
+
+	snprintf(dirname, sizeof(dirname),
+			"/sys/dev/block/%u:%u/slaves/",
+			major(disk), minor(disk));
+
+	if (!(dir = opendir(dirname)))
+		return -1;
+
+	while ((dp = readdir(dir)) != NULL) {
+#ifdef _DIRENT_HAVE_D_TYPE
+		if (dp->d_type != DT_UNKNOWN && dp->d_type != DT_LNK)
+			continue;
+#endif
+		if (dp->d_name[0] == '.' &&
+		    ((dp->d_name[1] == 0) ||
+		     ((dp->d_name[1] == '.') && (dp->d_name[2] == 0))))
+			continue;
+
+		count++;
+	}
+
+	closedir(dir);
+	return count;
+}
+
+/*
+ * Returns TRUE if a partition on the same disk is already being
+ * checked.
+ */
+static int disk_already_active(struct libmnt_fs *fs)
+{
+	struct fsck_instance *inst;
+	dev_t disk;
+
+	if (force_all_parallel)
+		return 0;
+
+	if (instance_list && fs_is_stacked(instance_list->fs))
+		/* any instance for a stacked device is already running */
+		return 1;
+
+	disk = fs_get_disk(fs, 1);
+
+	/*
+	 * If we don't know the base device, assume that the device is
+	 * already active if there are any fsck instances running.
+	 *
+	 * Don't check a stacked device with any other disk too.
+	 */
+	if (!disk || fs_is_stacked(fs))
+		return (instance_list != NULL);
+
+	for (inst = instance_list; inst; inst = inst->next) {
+		dev_t idisk = fs_get_disk(inst->fs, 0);
+
+		if (!idisk || disk == idisk)
+			return 1;
+	}
+
+	return 0;
+}
+
+/* Check all file systems, using the /etc/fstab table. */
+static int check_all(void)
+{
+	int not_done_yet = 1;
+	int passno = 1;
+	int pass_done;
+	int status = FSCK_EX_OK;
+
+	struct libmnt_fs *fs;
+	struct libmnt_iter *itr = mnt_new_iter(MNT_ITER_FORWARD);
+
+	if (!itr)
+		err(FSCK_EX_ERROR, _("failed to allocate iterator"));
+
+	/*
+	 * Do an initial scan over the filesystem; mark filesystems
+	 * which should be ignored as done, and resolve any "auto"
+	 * filesystem types (done as a side-effect of calling ignore()).
+	 */
+	while (mnt_table_next_fs(fstab, itr, &fs) == 0) {
+		if (ignore(fs)) {
+			fs_set_done(fs);
+			continue;
+		}
+	}
+
+	if (verbose)
+		fputs(_("Checking all file systems.\n"), stdout);
+
+	/*
+	 * Find and check the root filesystem.
+	 */
+	if (!parallel_root) {
+		fs = mnt_table_find_target(fstab, "/", MNT_ITER_FORWARD);
+		if (fs) {
+			if (!skip_root &&
+			    !fs_is_done(fs) &&
+			    !(ignore_mounted && is_mounted(fs))) {
+				status |= fsck_device(fs, 1);
+				status |= wait_many(FLAG_WAIT_ALL);
+				if (status > FSCK_EX_NONDESTRUCT) {
+					mnt_free_iter(itr);
+					return status;
+				}
+			}
+			fs_set_done(fs);
+		}
+	}
+
+	/*
+	 * This is for the bone-headed user who enters the root
+	 * filesystem twice.  Skip root will skip all root entries.
+	 */
+	if (skip_root) {
+		mnt_reset_iter(itr, MNT_ITER_FORWARD);
+
+		while(mnt_table_next_fs(fstab, itr, &fs) == 0) {
+			const char *tgt = mnt_fs_get_target(fs);
+
+			if (tgt && strcmp(tgt, "/") == 0)
+				fs_set_done(fs);
+		}
+	}
+
+	while (not_done_yet) {
+		not_done_yet = 0;
+		pass_done = 1;
+
+		mnt_reset_iter(itr, MNT_ITER_FORWARD);
+
+		while(mnt_table_next_fs(fstab, itr, &fs) == 0) {
+
+			if (cancel_requested)
+				break;
+			if (fs_is_done(fs))
+				continue;
+			/*
+			 * If the filesystem's pass number is higher
+			 * than the current pass number, then we don't
+			 * do it yet.
+			 */
+			if (mnt_fs_get_passno(fs) > passno) {
+				not_done_yet++;
+				continue;
+			}
+			if (ignore_mounted && is_mounted(fs)) {
+				fs_set_done(fs);
+				continue;
+			}
+			/*
+			 * If a filesystem on a particular device has
+			 * already been spawned, then we need to defer
+			 * this to another pass.
+			 */
+			if (disk_already_active(fs)) {
+				pass_done = 0;
+				continue;
+			}
+			/*
+			 * Spawn off the fsck process
+			 */
+			status |= fsck_device(fs, serialize);
+			fs_set_done(fs);
+
+			/*
+			 * Only do one filesystem at a time, or if we
+			 * have a limit on the number of fsck's extant
+			 * at one time, apply that limit.
+			 */
+			if (serialize ||
+			    (max_running && (num_running >= max_running))) {
+				pass_done = 0;
+				break;
+			}
+		}
+		if (cancel_requested)
+			break;
+		if (verbose > 1)
+			printf(_("--waiting-- (pass %d)\n"), passno);
+
+		status |= wait_many(pass_done ? FLAG_WAIT_ALL :
+				    FLAG_WAIT_ATLEAST_ONE);
+		if (pass_done) {
+			if (verbose > 1)
+				printf("----------------------------------\n");
+			passno++;
+		} else
+			not_done_yet++;
+	}
+
+	if (cancel_requested && !kill_sent) {
+		kill_all(SIGTERM);
+		kill_sent++;
+	}
+
+	status |= wait_many(FLAG_WAIT_ATLEAST_ONE);
+	mnt_free_iter(itr);
+	return status;
+}
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+	FILE *out = stdout;
+	fputs(USAGE_HEADER, out);
+	fprintf(out, _(" %s [options] -- [fs-options] [<filesystem> ...]\n"),
+			 program_invocation_short_name);
+
+	fputs(USAGE_SEPARATOR, out);
+	fputs(_("Check and repair a Linux filesystem.\n"), out);
+
+	fputs(USAGE_OPTIONS, out);
+	fputs(_(" -A         check all filesystems\n"), out);
+	fputs(_(" -C [<fd>]  display progress bar; file descriptor is for GUIs\n"), out);
+	fputs(_(" -l         lock the device to guarantee exclusive access\n"), out);
+	fputs(_(" -M         do not check mounted filesystems\n"), out);
+	fputs(_(" -N         do not execute, just show what would be done\n"), out);
+	fputs(_(" -P         check filesystems in parallel, including root\n"), out);
+	fputs(_(" -R         skip root filesystem; useful only with '-A'\n"), out);
+	fputs(_(" -r [<fd>]  report statistics for each device checked;\n"
+		"            file descriptor is for GUIs\n"), out);
+	fputs(_(" -s         serialize the checking operations\n"), out);
+	fputs(_(" -T         do not show the title on startup\n"), out);
+	fputs(_(" -t <type>  specify filesystem types to be checked;\n"
+		"            <type> is allowed to be a comma-separated list\n"), out);
+	fputs(_(" -V         explain what is being done\n"), out);
+
+	fputs(USAGE_SEPARATOR, out);
+	printf( " -?, --help     %s\n", USAGE_OPTSTR_HELP);
+	printf( "     --version  %s\n", USAGE_OPTSTR_VERSION);
+	fputs(USAGE_SEPARATOR, out);
+	fputs(_("See the specific fsck.* commands for available fs-options."), out);
+	printf(USAGE_MAN_TAIL("fsck(8)"));
+	exit(FSCK_EX_OK);
+}
+
+static void signal_cancel(int sig __attribute__((__unused__)))
+{
+	cancel_requested = 1;
+}
+
+static void parse_argv(int argc, char *argv[])
+{
+	int	i, j;
+	char	*arg, *dev, *tmp = NULL;
+	char	options[128];
+	int	opt = 0;
+	int     opts_for_fsck = 0;
+	struct sigaction	sa;
+	int	report_stats_fd = -1;
+
+	/*
+	 * Set up signal action
+	 */
+	memset(&sa, 0, sizeof(struct sigaction));
+	sa.sa_handler = signal_cancel;
+	sigaction(SIGINT, &sa, NULL);
+	sigaction(SIGTERM, &sa, NULL);
+
+	num_devices = 0;
+	num_args = 0;
+	instance_list = NULL;
+
+	for (i=1; i < argc; i++) {
+		arg = argv[i];
+		if (!arg)
+			continue;
+
+		/* the only two longopts to satisfy UL standards */
+		if (!opts_for_fsck && !strcmp(arg, "--help"))
+			usage();
+		if (!opts_for_fsck && !strcmp(arg, "--version"))
+			print_version(FSCK_EX_OK);
+
+		if ((arg[0] == '/' && !opts_for_fsck) || strchr(arg, '=')) {
+			if (num_devices >= MAX_DEVICES)
+				errx(FSCK_EX_ERROR, _("too many devices"));
+
+			dev = mnt_resolve_spec(arg, mntcache);
+
+			if (!dev && strchr(arg, '=')) {
+				/*
+				 * Check to see if we failed because
+				 * /proc/partitions isn't found.
+				 */
+				if (access(_PATH_PROC_PARTITIONS, R_OK) < 0) {
+					warn(_("cannot open %s"),
+						_PATH_PROC_PARTITIONS);
+					errx(FSCK_EX_ERROR, _("Is /proc mounted?"));
+				}
+				/*
+				 * Check to see if this is because
+				 * we're not running as root
+				 */
+				if (geteuid())
+					errx(FSCK_EX_ERROR,
+						_("must be root to scan for matching filesystems: %s"),
+						arg);
+				else
+					errx(FSCK_EX_ERROR,
+						_("couldn't find matching filesystem: %s"),
+						arg);
+			}
+			devices[num_devices++] = dev ? dev : xstrdup(arg);
+			continue;
+		}
+		if (arg[0] != '-' || opts_for_fsck) {
+			if (num_args >= MAX_ARGS)
+				errx(FSCK_EX_ERROR, _("too many arguments"));
+			args[num_args++] = xstrdup(arg);
+			continue;
+		}
+		for (j=1; arg[j]; j++) {
+			if (opts_for_fsck) {
+				options[++opt] = arg[j];
+				continue;
+			}
+			switch (arg[j]) {
+			case 'A':
+				doall = 1;
+				break;
+			case 'C':
+				progress = 1;
+				if (arg[j+1]) {					/* -C<fd> */
+					progress_fd = string_to_int(arg+j+1);
+					if (progress_fd < 0)
+						progress_fd = 0;
+					else
+						goto next_arg;
+				} else if (i+1 < argc && *argv[i+1] != '-') {	/* -C <fd> */
+					progress_fd = string_to_int(argv[i+1]);
+					if (progress_fd < 0)
+						progress_fd = 0;
+					else {
+						++i;
+						goto next_arg;
+					}
+				}
+				break;
+			case 'l':
+				lockdisk = 1;
+				break;
+			case 'V':
+				verbose++;
+				break;
+			case 'N':
+				noexecute = 1;
+				break;
+			case 'R':
+				skip_root = 1;
+				break;
+			case 'T':
+				notitle = 1;
+				break;
+			case 'M':
+				ignore_mounted = 1;
+				break;
+			case 'P':
+				parallel_root = 1;
+				break;
+			case 'r':
+				report_stats = 1;
+				if (arg[j+1]) {					/* -r<fd> */
+					report_stats_fd = strtou32_or_err(arg+j+1, _("invalid argument of -r"));
+					goto next_arg;
+				} else if (i+1 < argc && *argv[i+1] >= '0' && *argv[i+1] <= '9') {	/* -r <fd> */
+					report_stats_fd = strtou32_or_err(argv[i+1], _("invalid argument of -r"));
+					++i;
+					goto next_arg;
+				}
+				break;
+			case 's':
+				serialize = 1;
+				break;
+			case 't':
+				tmp = NULL;
+				if (fstype)
+					errx(FSCK_EX_USAGE,
+						_("option '%s' may be specified only once"), "-t");
+				if (arg[j+1])
+					tmp = arg+j+1;
+				else if ((i+1) < argc)
+					tmp = argv[++i];
+				else
+					errx(FSCK_EX_USAGE,
+						_("option '%s' requires an argument"), "-t");
+				fstype = xstrdup(tmp);
+				compile_fs_type(fstype, &fs_type_compiled);
+				goto next_arg;
+			case '-':
+				opts_for_fsck++;
+				break;
+			case '?':
+				usage();
+				break;
+			default:
+				options[++opt] = arg[j];
+				break;
+			}
+		}
+	next_arg:
+		if (opt) {
+			options[0] = '-';
+			options[++opt] = '\0';
+			if (num_args >= MAX_ARGS)
+				errx(FSCK_EX_ERROR, _("too many arguments"));
+			args[num_args++] = xstrdup(options);
+			opt = 0;
+		}
+	}
+
+	/* Validate the report stats file descriptor to avoid disasters */
+	if (report_stats_fd >= 0) {
+		report_stats_file = fdopen(report_stats_fd, "w");
+		if (!report_stats_file)
+			err(FSCK_EX_ERROR,
+				_("invalid argument of -r: %d"),
+				report_stats_fd);
+	}
+
+	if (getenv("FSCK_FORCE_ALL_PARALLEL"))
+		force_all_parallel++;
+	if (ul_strtos32(getenv("FSCK_MAX_INST"), &max_running, 10) != 0)
+		max_running = 0;
+}
+
+int main(int argc, char *argv[])
+{
+	int i, status = 0;
+	int interactive = 0;
+	struct libmnt_fs *fs;
+	const char *path = getenv("PATH");
+
+	setvbuf(stdout, NULL, _IONBF, BUFSIZ);
+	setvbuf(stderr, NULL, _IONBF, BUFSIZ);
+
+	setlocale(LC_MESSAGES, "");
+	setlocale(LC_CTYPE, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+	close_stdout_atexit();
+
+	strutils_set_exitcode(FSCK_EX_USAGE);
+	mnt_init_debug(0);		/* init libmount debug mask */
+	mntcache = mnt_new_cache();	/* no fatal error if failed */
+
+	if (mntcache)
+		/* Force libblkid to accept also filesystems with bad
+		 * checksums. This feature is helpful for "fsck /dev/foo," but
+		 * if it evaluates LABEL/UUIDs from fstab, then libmount may
+		 * use cached data from udevd and udev accepts only properly
+		 * detected filesystems.
+		 */
+		mnt_cache_set_sbprobe(mntcache, BLKID_SUBLKS_BADCSUM);
+
+
+	parse_argv(argc, argv);
+
+	if (!notitle)
+		printf(UTIL_LINUX_VERSION);
+
+	signal(SIGCHLD, SIG_DFL);	/* clear any inherited settings */
+
+	load_fs_info();
+
+	fsck_path = xstrdup(path && *path ? path : FSCK_DEFAULT_PATH);
+
+	if ((num_devices == 1) || (serialize))
+		interactive = 1;
+
+	if (lockdisk && (doall || num_devices > 1)) {
+		warnx(_("the -l option can be used with one "
+				  "device only -- ignore"));
+		lockdisk = 0;
+	}
+
+	/* If -A was specified ("check all"), do that! */
+	if (doall)
+		return check_all();
+
+	if (num_devices == 0) {
+		serialize++;
+		interactive++;
+		return check_all();
+	}
+	for (i = 0 ; i < num_devices; i++) {
+		if (cancel_requested) {
+			if (!kill_sent) {
+				kill_all(SIGTERM);
+				kill_sent++;
+			}
+			break;
+		}
+		fs = lookup(devices[i]);
+		if (!fs)
+			fs = add_dummy_fs(devices[i]);
+		else if (fs_ignored_type(fs))
+			continue;
+		if (ignore_mounted && is_mounted(fs))
+			continue;
+		status |= fsck_device(fs, interactive);
+		if (serialize ||
+		    (max_running && (num_running >= max_running))) {
+			struct fsck_instance *inst;
+
+			inst = wait_one(0);
+			if (inst) {
+				status |= inst->exit_status;
+				free_instance(inst);
+			}
+			if (verbose > 1)
+				printf("----------------------------------\n");
+		}
+	}
+	status |= wait_many(FLAG_WAIT_ALL);
+	free(fsck_path);
+	mnt_unref_cache(mntcache);
+	mnt_unref_table(fstab);
+	mnt_unref_table(mtab);
+	return status;
+}