2 * fsck --- A generic, parallelizing front-end for the fsck program.
3 * It will automatically try to run fsck programs in parallel if the
4 * devices are on separate spindles. It is based on the same ideas as
5 * the generic front end for fsck by David Engel and Fred van Kempen,
6 * but it has been completely rewritten from scratch to support
9 * Written by Theodore Ts'o, <tytso@mit.edu>
11 * Miquel van Smoorenburg (miquels@drinkel.ow.org) 20-Oct-1994:
12 * o Changed -t fstype to behave like with mount when -A (all file
13 * systems) or -M (like mount) is specified.
14 * o fsck looks if it can find the fsck.type program to decide
15 * if it should ignore the fs type. This way more fsck programs
16 * can be added without changing this front-end.
17 * o -R flag skip root file system.
19 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
20 * 2001, 2002, 2003, 2004, 2005 by Theodore Ts'o.
22 * Copyright (C) 2009-2014 Karel Zak <kzak@redhat.com>
24 * This file may be redistributed under the terms of the GNU Public
28 #define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */
30 #include <sys/types.h>
46 #include <sys/resource.h>
52 #include "pathnames.h"
53 #include "exitcodes.h"
55 #include "fileutils.h"
56 #include "monotonic.h"
59 #define XALLOC_EXIT_CODE FSCK_EX_ERROR
62 #define CLOSE_EXIT_CODE FSCK_EX_ERROR
63 #include "closestream.h"
65 #ifndef DEFAULT_FSTYPE
66 # define DEFAULT_FSTYPE "ext2"
69 #define MAX_DEVICES 32
72 #define FSCK_RUNTIME_DIRNAME "/run/fsck"
74 static const char *ignored_types
[] = {
81 static const char *really_wanted
[] = {
92 * Internal structure for mount table entries.
98 unsigned int stacked
:1,
104 * Structure to allow exit codes to be stored
106 struct fsck_instance
{
108 int flags
; /* FLAG_{DONE|PROGRESS} */
110 int lock
; /* flock()ed lockpath file descriptor or -1 */
111 char *lockpath
; /* /run/fsck/<diskname>.lock or NULL */
114 struct timeval start_time
;
115 struct timeval end_time
;
119 struct rusage rusage
;
120 struct libmnt_fs
*fs
;
121 struct fsck_instance
*next
;
125 #define FLAG_PROGRESS 2
128 * Global variables for options
130 static char *devices
[MAX_DEVICES
];
131 static char *args
[MAX_ARGS
];
132 static int num_devices
, num_args
;
137 static int noexecute
;
138 static int serialize
;
139 static int skip_root
;
140 static int ignore_mounted
;
142 static int parallel_root
;
144 static int progress_fd
;
145 static int force_all_parallel
;
146 static int report_stats
;
147 static FILE *report_stats_file
;
149 static int num_running
;
150 static int max_running
;
152 static volatile int cancel_requested
;
153 static int kill_sent
;
155 static struct fsck_instance
*instance_list
;
157 #define FSCK_DEFAULT_PATH "/sbin"
158 static char *fsck_path
;
161 /* parsed fstab and mtab */
162 static struct libmnt_table
*fstab
, *mtab
;
163 static struct libmnt_cache
*mntcache
;
165 static int count_slaves(dev_t disk
);
167 static int string_to_int(const char *s
)
172 l
= strtol(s
, &p
, 0);
173 if (*p
|| l
== LONG_MIN
|| l
== LONG_MAX
|| l
< 0 || l
> INT_MAX
)
179 /* Do we really really want to check this fs? */
180 static int fs_check_required(const char *type
)
184 for(i
= 0; i
< ARRAY_SIZE(really_wanted
); i
++) {
185 if (strcmp(type
, really_wanted
[i
]) == 0)
192 static int is_mounted(struct libmnt_fs
*fs
)
197 src
= mnt_fs_get_source(fs
);
201 mntcache
= mnt_new_cache();
203 mtab
= mnt_new_table();
205 err(FSCK_EX_ERROR
, ("failed to initialize libmount table"));
206 mnt_table_set_cache(mtab
, mntcache
);
207 mnt_table_parse_mtab(mtab
, NULL
);
210 rc
= mnt_table_find_source(mtab
, src
, MNT_ITER_BACKWARD
) ? 1 : 0;
213 printf(_("%s is mounted\n"), src
);
215 printf(_("%s is not mounted\n"), src
);
220 static int ignore(struct libmnt_fs
*);
222 static struct fsck_fs_data
*fs_create_data(struct libmnt_fs
*fs
)
224 struct fsck_fs_data
*data
= mnt_fs_get_userdata(fs
);
227 data
= xcalloc(1, sizeof(*data
));
228 mnt_fs_set_userdata(fs
, data
);
234 * fs from fstab might contains real device name as well as symlink,
235 * LABEL or UUID, this function returns canonicalized result.
237 static const char *fs_get_device(struct libmnt_fs
*fs
)
239 struct fsck_fs_data
*data
= mnt_fs_get_userdata(fs
);
241 if (!data
|| !data
->eval_device
) {
242 const char *spec
= mnt_fs_get_source(fs
);
245 data
= fs_create_data(fs
);
247 data
->eval_device
= 1;
248 data
->device
= mnt_resolve_spec(spec
, mnt_table_get_cache(fstab
));
250 data
->device
= xstrdup(spec
);
256 static dev_t
fs_get_disk(struct libmnt_fs
*fs
, int check
)
258 struct fsck_fs_data
*data
;
262 data
= mnt_fs_get_userdata(fs
);
263 if (data
&& data
->disk
)
269 if (mnt_fs_is_netfs(fs
) || mnt_fs_is_pseudofs(fs
))
272 device
= fs_get_device(fs
);
276 data
= fs_create_data(fs
);
278 if (!stat(device
, &st
) &&
279 !blkid_devno_to_wholedisk(st
.st_rdev
, NULL
, 0, &data
->disk
)) {
282 data
->stacked
= count_slaves(data
->disk
) > 0 ? 1 : 0;
288 static int fs_is_stacked(struct libmnt_fs
*fs
)
290 struct fsck_fs_data
*data
= mnt_fs_get_userdata(fs
);
291 return data
? data
->stacked
: 0;
294 static int fs_is_done(struct libmnt_fs
*fs
)
296 struct fsck_fs_data
*data
= mnt_fs_get_userdata(fs
);
297 return data
? data
->done
: 0;
300 static void fs_set_done(struct libmnt_fs
*fs
)
302 struct fsck_fs_data
*data
= fs_create_data(fs
);
308 static int is_irrotational_disk(dev_t disk
)
315 rc
= snprintf(path
, sizeof(path
),
316 "/sys/dev/block/%d:%d/queue/rotational",
317 major(disk
), minor(disk
));
319 if (rc
< 0 || (unsigned int) rc
>= sizeof(path
))
322 f
= fopen(path
, "r");
326 rc
= fscanf(f
, "%d", &x
);
329 warn(_("cannot read %s"), path
);
331 warnx(_("parse error: %s"), path
);
335 return rc
== 1 ? !x
: 0;
338 static void lock_disk(struct fsck_instance
*inst
)
340 dev_t disk
= fs_get_disk(inst
->fs
, 1);
341 char *diskpath
= NULL
, *diskname
;
345 if (!disk
|| is_irrotational_disk(disk
))
348 diskpath
= blkid_devno_to_devname(disk
);
352 if (access(FSCK_RUNTIME_DIRNAME
, F_OK
) != 0) {
353 int rc
= mkdir(FSCK_RUNTIME_DIRNAME
,
355 S_IRUSR
|S_IRGRP
|S_IROTH
|
356 S_IXUSR
|S_IXGRP
|S_IXOTH
);
357 if (rc
&& errno
!= EEXIST
) {
358 warn(_("cannot create directory %s"),
359 FSCK_RUNTIME_DIRNAME
);
364 diskname
= stripoff_last_component(diskpath
);
368 xasprintf(&inst
->lockpath
, FSCK_RUNTIME_DIRNAME
"/%s.lock", diskname
);
371 printf(_("Locking disk by %s ... "), inst
->lockpath
);
373 inst
->lock
= open(inst
->lockpath
, O_RDONLY
|O_CREAT
|O_CLOEXEC
,
374 S_IWUSR
|S_IRUSR
|S_IRGRP
|S_IROTH
);
375 if (inst
->lock
>= 0) {
378 /* inform users that we're waiting on the lock */
380 (rc
= flock(inst
->lock
, LOCK_EX
| LOCK_NB
)) != 0 &&
381 errno
== EWOULDBLOCK
)
382 printf(_("(waiting) "));
384 if (rc
!= 0 && flock(inst
->lock
, LOCK_EX
) != 0) {
385 close(inst
->lock
); /* failed */
391 /* TRANSLATORS: These are followups to "Locking disk...". */
392 printf("%s.\n", inst
->lock
>= 0 ? _("succeeded") : _("failed"));
396 if (inst
->lock
< 0) {
397 free(inst
->lockpath
);
398 inst
->lockpath
= NULL
;
404 static void unlock_disk(struct fsck_instance
*inst
)
410 printf(_("Unlocking %s.\n"), inst
->lockpath
);
412 close(inst
->lock
); /* unlock */
414 free(inst
->lockpath
);
417 inst
->lockpath
= NULL
;
420 static void free_instance(struct fsck_instance
*i
)
431 static struct libmnt_fs
*add_dummy_fs(const char *device
)
433 struct libmnt_fs
*fs
= mnt_new_fs();
435 if (fs
&& mnt_fs_set_source(fs
, device
) == 0 &&
436 mnt_table_add_fs(fstab
, fs
) == 0) {
442 err(FSCK_EX_ERROR
, _("failed to setup description for %s"), device
);
445 static void fs_interpret_type(struct libmnt_fs
*fs
)
448 const char *type
= mnt_fs_get_fstype(fs
);
450 if (type
&& strcmp(type
, "auto") != 0)
453 mnt_fs_set_fstype(fs
, NULL
);
455 device
= fs_get_device(fs
);
459 struct libmnt_cache
*cache
= mnt_table_get_cache(fstab
);
461 tp
= mnt_get_fstype(device
, &ambi
, cache
);
463 mnt_fs_set_fstype(fs
, tp
);
469 static int parser_errcb(struct libmnt_table
*tb
__attribute__ ((__unused__
)),
470 const char *filename
, int line
)
472 warnx(_("%s: parse error at line %d -- ignored"), filename
, line
);
477 * Load the filesystem database from /etc/fstab
479 static void load_fs_info(void)
483 fstab
= mnt_new_table();
485 err(FSCK_EX_ERROR
, ("failed to initialize libmount table"));
487 mnt_table_set_parser_errcb(fstab
, parser_errcb
);
488 mnt_table_set_cache(fstab
, mntcache
);
493 * Let's follow libmount defaults if $FSTAB_FILE is not specified
495 path
= getenv("FSTAB_FILE");
497 if (mnt_table_parse_fstab(fstab
, path
)) {
499 path
= mnt_get_fstab_path();
501 /* don't print error when there is no fstab at all */
502 if (access(path
, F_OK
) == 0) {
504 warn(_("%s: failed to parse fstab"), path
);
506 warnx(_("%s: failed to parse fstab"), path
);
512 * Lookup filesys in /etc/fstab and return the corresponding entry.
513 * The @path has to be real path (no TAG) by mnt_resolve_spec().
515 static struct libmnt_fs
*lookup(char *path
)
517 struct libmnt_fs
*fs
;
522 fs
= mnt_table_find_srcpath(fstab
, path
, MNT_ITER_FORWARD
);
525 * Maybe mountpoint has been specified on fsck command line.
526 * Yeah, crazy feature...
528 * Note that mnt_table_find_target() may canonicalize paths in
529 * the fstab to support symlinks. This is really unwanted,
530 * because readlink() on mountpoints may trigger automounts.
532 * So, disable the cache and compare the paths as strings
533 * without care about symlinks...
535 mnt_table_set_cache(fstab
, NULL
);
536 fs
= mnt_table_find_target(fstab
, path
, MNT_ITER_FORWARD
);
537 mnt_table_set_cache(fstab
, mntcache
);
542 /* Find fsck program for a given fs type. */
543 static int find_fsck(const char *type
, char **progpath
)
548 char *p
= xstrdup(fsck_path
);
551 /* Are we looking for a program or just a type? */
552 tpl
= (strncmp(type
, "fsck.", 5) ? "%s/fsck.%s" : "%s/%s");
554 for(s
= strtok(p
, ":"); s
; s
= strtok(NULL
, ":")) {
555 xasprintf(&prog
, tpl
, s
, type
);
556 if (access(prog
, X_OK
) == 0)
573 static int progress_active(void)
575 struct fsck_instance
*inst
;
577 for (inst
= instance_list
; inst
; inst
= inst
->next
) {
578 if (inst
->flags
& FLAG_DONE
)
580 if (inst
->flags
& FLAG_PROGRESS
)
587 * Process run statistics for finished fsck instances.
589 * If report_stats is 0, do nothing, otherwise print a selection of
590 * interesting rusage statistics as well as elapsed wallclock time.
592 static void print_stats(struct fsck_instance
*inst
)
594 struct timeval delta
;
596 if (!inst
|| !report_stats
|| noexecute
)
599 timersub(&inst
->end_time
, &inst
->start_time
, &delta
);
601 if (report_stats_file
)
602 fprintf(report_stats_file
, "%s %d %ld "
603 "%ld.%06ld %ld.%06ld %ld.%06ld\n",
604 fs_get_device(inst
->fs
),
606 inst
->rusage
.ru_maxrss
,
607 (long)delta
.tv_sec
, (long)delta
.tv_usec
,
608 (long)inst
->rusage
.ru_utime
.tv_sec
,
609 (long)inst
->rusage
.ru_utime
.tv_usec
,
610 (long)inst
->rusage
.ru_stime
.tv_sec
,
611 (long)inst
->rusage
.ru_stime
.tv_usec
);
613 fprintf(stdout
, "%s: status %d, rss %ld, "
614 "real %ld.%06ld, user %ld.%06ld, sys %ld.%06ld\n",
615 fs_get_device(inst
->fs
),
617 inst
->rusage
.ru_maxrss
,
618 (long)delta
.tv_sec
, (long)delta
.tv_usec
,
619 (long)inst
->rusage
.ru_utime
.tv_sec
,
620 (long)inst
->rusage
.ru_utime
.tv_usec
,
621 (long)inst
->rusage
.ru_stime
.tv_sec
,
622 (long)inst
->rusage
.ru_stime
.tv_usec
);
626 * Execute a particular fsck program, and link it into the list of
627 * child processes we are waiting for.
629 static int execute(const char *progname
, const char *progpath
,
630 const char *type
, struct libmnt_fs
*fs
, int interactive
)
634 struct fsck_instance
*inst
, *p
;
637 inst
= xcalloc(1, sizeof(*inst
));
639 argv
[0] = xstrdup(progname
);
642 for (i
=0; i
<num_args
; i
++)
643 argv
[argc
++] = xstrdup(args
[i
]);
646 ((strcmp(type
, "ext2") == 0) ||
647 (strcmp(type
, "ext3") == 0) ||
648 (strcmp(type
, "ext4") == 0) ||
649 (strcmp(type
, "ext4dev") == 0))) {
653 if (!progress_active()) {
654 snprintf(tmp
, 80, "-C%d", progress_fd
);
655 inst
->flags
|= FLAG_PROGRESS
;
656 } else if (progress_fd
)
657 snprintf(tmp
, 80, "-C%d", progress_fd
* -1);
659 argv
[argc
++] = xstrdup(tmp
);
662 argv
[argc
++] = xstrdup(fs_get_device(fs
));
665 if (verbose
|| noexecute
) {
666 const char *tgt
= mnt_fs_get_target(fs
);
669 tgt
= fs_get_device(fs
);
670 printf("[%s (%d) -- %s] ", progpath
, num_running
, tgt
);
671 for (i
=0; i
< argc
; i
++)
672 printf("%s ", argv
[i
]);
683 /* Fork and execute the correct program. */
686 else if ((pid
= fork()) < 0) {
687 warn(_("fork failed"));
690 } else if (pid
== 0) {
693 execv(progpath
, argv
);
694 err(FSCK_EX_ERROR
, _("%s: execute failed"), progpath
);
697 for (i
=0; i
< argc
; i
++)
701 inst
->prog
= xstrdup(progname
);
702 inst
->type
= xstrdup(type
);
703 gettime_monotonic(&inst
->start_time
);
707 * Find the end of the list, so we add the instance on at the end.
709 for (p
= instance_list
; p
&& p
->next
; p
= p
->next
);
714 instance_list
= inst
;
720 * Send a signal to all outstanding fsck child processes
722 static int kill_all(int signum
)
724 struct fsck_instance
*inst
;
727 for (inst
= instance_list
; inst
; inst
= inst
->next
) {
728 if (inst
->flags
& FLAG_DONE
)
730 kill(inst
->pid
, signum
);
737 * Wait for one child process to exit; when it does, unlink it from
738 * the list of executing child processes, and return it.
740 static struct fsck_instance
*wait_one(int flags
)
744 struct fsck_instance
*inst
, *inst2
, *prev
;
746 struct rusage rusage
;
752 inst
= instance_list
;
755 while (inst
->next
&& (random() & 1)) {
760 inst
->exit_status
= 0;
765 * gcc -Wall fails saving throw against stupidity
766 * (inst and prev are thought to be uninitialized variables)
771 pid
= wait4(-1, &status
, flags
, &rusage
);
772 if (cancel_requested
&& !kill_sent
) {
776 if ((pid
== 0) && (flags
& WNOHANG
))
779 if ((errno
== EINTR
) || (errno
== EAGAIN
))
781 if (errno
== ECHILD
) {
782 warnx(_("wait: no more child process?!?"));
785 warn(_("waitpid failed"));
788 for (prev
= NULL
, inst
= instance_list
;
790 prev
= inst
, inst
= inst
->next
) {
791 if (inst
->pid
== pid
)
796 if (WIFEXITED(status
))
797 status
= WEXITSTATUS(status
);
798 else if (WIFSIGNALED(status
)) {
799 sig
= WTERMSIG(status
);
801 status
= FSCK_EX_UNCORRECTED
;
803 warnx(_("Warning... %s for device %s exited "
805 inst
->prog
, fs_get_device(inst
->fs
), sig
);
806 status
= FSCK_EX_ERROR
;
809 warnx(_("%s %s: status is %x, should never happen."),
810 inst
->prog
, fs_get_device(inst
->fs
), status
);
811 status
= FSCK_EX_ERROR
;
814 inst
->exit_status
= status
;
815 inst
->flags
|= FLAG_DONE
;
816 gettime_monotonic(&inst
->end_time
);
817 memcpy(&inst
->rusage
, &rusage
, sizeof(struct rusage
));
819 if (progress
&& (inst
->flags
& FLAG_PROGRESS
) &&
820 !progress_active()) {
821 for (inst2
= instance_list
; inst2
; inst2
= inst2
->next
) {
822 if (inst2
->flags
& FLAG_DONE
)
824 if (strcmp(inst2
->type
, "ext2") &&
825 strcmp(inst2
->type
, "ext3") &&
826 strcmp(inst2
->type
, "ext4") &&
827 strcmp(inst2
->type
, "ext4dev"))
830 * If we've just started the fsck, wait a tiny
831 * bit before sending the kill, to give it
832 * time to set up the signal handler
834 if (inst2
->start_time
.tv_sec
< time(NULL
) + 2) {
837 kill(inst2
->pid
, SIGUSR1
);
841 kill(inst2
->pid
, SIGUSR1
);
842 inst2
->flags
|= FLAG_PROGRESS
;
848 prev
->next
= inst
->next
;
850 instance_list
= inst
->next
;
855 printf(_("Finished with %s (exit status %d)\n"),
856 fs_get_device(inst
->fs
), inst
->exit_status
);
861 #define FLAG_WAIT_ALL 0
862 #define FLAG_WAIT_ATLEAST_ONE 1
864 * Wait until all executing child processes have exited; return the
865 * logical OR of all of their exit code values.
867 static int wait_many(int flags
)
869 struct fsck_instance
*inst
;
870 int global_status
= 0;
873 while ((inst
= wait_one(wait_flags
))) {
874 global_status
|= inst
->exit_status
;
877 if (noexecute
&& (flags
& WNOHANG
) && !(random() % 3))
880 if (flags
& FLAG_WAIT_ATLEAST_ONE
)
881 wait_flags
= WNOHANG
;
883 return global_status
;
887 * Run the fsck program on a particular device
889 * If the type is specified using -t, and it isn't prefixed with "no"
890 * (as in "noext2") and only one filesystem type is specified, then
891 * use that type regardless of what is specified in /etc/fstab.
893 * If the type isn't specified by the user, then use either the type
894 * specified in /etc/fstab, or DEFAULT_FSTYPE.
896 static int fsck_device(struct libmnt_fs
*fs
, int interactive
)
898 char *progname
, *progpath
;
902 fs_interpret_type(fs
);
904 type
= mnt_fs_get_fstype(fs
);
906 if (type
&& strcmp(type
, "auto") != 0)
908 else if (fstype
&& strncmp(fstype
, "no", 2) &&
909 strncmp(fstype
, "opts=", 5) && strncmp(fstype
, "loop", 4) &&
910 !strchr(fstype
, ','))
913 type
= DEFAULT_FSTYPE
;
915 xasprintf(&progname
, "fsck.%s", type
);
917 if (!find_fsck(progname
, &progpath
)) {
919 if (fs_check_required(type
)) {
927 retval
= execute(progname
, progpath
, type
, fs
, interactive
);
936 warnx(_("error %d (%m) while executing fsck.%s for %s"),
937 retval
, type
, fs_get_device(fs
));
938 return FSCK_EX_ERROR
;
943 * Deal with the fsck -t argument.
945 static struct fs_type_compile
{
951 #define FS_TYPE_NORMAL 0
952 #define FS_TYPE_OPT 1
953 #define FS_TYPE_NEGOPT 2
955 static void compile_fs_type(char *fs_type
, struct fs_type_compile
*cmp
)
959 int negate
, first_negate
= 1;
962 for (cp
=fs_type
; *cp
; cp
++) {
968 cmp
->list
= xcalloc(num
, sizeof(char *));
969 cmp
->type
= xcalloc(num
, sizeof(int));
975 list
= xstrdup(fs_type
);
977 s
= strtok(list
, ",");
980 if (strncmp(s
, "no", 2) == 0) {
983 } else if (*s
== '!') {
987 if (strcmp(s
, "loop") == 0)
988 /* loop is really short-hand for opts=loop */
989 goto loop_special_case
;
990 else if (strncmp(s
, "opts=", 5) == 0) {
993 cmp
->type
[num
] = negate
? FS_TYPE_NEGOPT
: FS_TYPE_OPT
;
996 cmp
->negate
= negate
;
999 if ((negate
&& !cmp
->negate
) ||
1000 (!negate
&& cmp
->negate
)) {
1002 _("Either all or none of the filesystem types passed to -t must be prefixed\n"
1003 "with 'no' or '!'."));
1007 cmp
->list
[num
++] = xstrdup(s
);
1008 s
= strtok(NULL
, ",");
1014 * This function returns true if a particular option appears in a
1015 * comma-delimited options list
1017 static int opt_in_list(const char *opt
, const char *optlist
)
1023 list
= xstrdup(optlist
);
1025 s
= strtok(list
, ",");
1027 if (strcmp(s
, opt
) == 0) {
1031 s
= strtok(NULL
, ",");
1037 /* See if the filesystem matches the criteria given by the -t option */
1038 static int fs_match(struct libmnt_fs
*fs
, struct fs_type_compile
*cmp
)
1040 int n
, ret
= 0, checked_type
= 0;
1043 if (cmp
->list
== NULL
|| cmp
->list
[0] == NULL
)
1046 for (n
=0; (cp
= cmp
->list
[n
]); n
++) {
1047 switch (cmp
->type
[n
]) {
1048 case FS_TYPE_NORMAL
:
1050 const char *type
= mnt_fs_get_fstype(fs
);
1053 if (type
&& strcmp(cp
, type
) == 0)
1057 case FS_TYPE_NEGOPT
:
1058 if (opt_in_list(cp
, mnt_fs_get_options(fs
)))
1062 if (!opt_in_list(cp
, mnt_fs_get_options(fs
)))
1067 if (checked_type
== 0)
1069 return (cmp
->negate
? !ret
: ret
);
1073 * Check if a device exists
1075 static int device_exists(const char *device
)
1079 if (stat(device
, &st
) == -1)
1081 if (!S_ISBLK(st
.st_mode
))
1086 static int fs_ignored_type(struct libmnt_fs
*fs
)
1088 const char **ip
, *type
;
1090 if (mnt_fs_is_netfs(fs
) || mnt_fs_is_pseudofs(fs
) || mnt_fs_is_swaparea(fs
))
1093 type
= mnt_fs_get_fstype(fs
);
1095 for(ip
= ignored_types
; type
&& *ip
; ip
++) {
1096 if (strcmp(type
, *ip
) == 0)
1103 /* Check if we should ignore this filesystem. */
1104 static int ignore(struct libmnt_fs
*fs
)
1109 * If the pass number is 0, ignore it.
1111 if (mnt_fs_get_passno(fs
) == 0)
1115 * If this is a bind mount, ignore it.
1117 if (opt_in_list("bind", mnt_fs_get_options(fs
))) {
1118 warnx(_("%s: skipping bad line in /etc/fstab: "
1119 "bind mount with nonzero fsck pass number"),
1120 mnt_fs_get_target(fs
));
1125 * ignore devices that don't exist and have the "nofail" mount option
1127 if (!device_exists(fs_get_device(fs
))) {
1128 if (opt_in_list("nofail", mnt_fs_get_options(fs
))) {
1130 printf(_("%s: skipping nonexistent device\n"),
1135 printf(_("%s: nonexistent device (\"nofail\" fstab "
1136 "option may be used to skip this device)\n"),
1140 fs_interpret_type(fs
);
1143 * If a specific fstype is specified, and it doesn't match,
1146 if (!fs_match(fs
, &fs_type_compiled
))
1149 type
= mnt_fs_get_fstype(fs
);
1152 printf(_("%s: skipping unknown filesystem type\n"),
1157 /* Are we ignoring this type? */
1158 if (fs_ignored_type(fs
))
1163 /* See if the <fsck.fs> program is available. */
1164 if (!find_fsck(type
, NULL
)) {
1165 if (fs_check_required(type
))
1166 warnx(_("cannot check %s: fsck.%s not found"),
1167 fs_get_device(fs
), type
);
1171 /* We can and want to check this file system type. */
1175 static int count_slaves(dev_t disk
)
1179 char dirname
[PATH_MAX
];
1182 snprintf(dirname
, sizeof(dirname
),
1183 "/sys/dev/block/%u:%u/slaves/",
1184 major(disk
), minor(disk
));
1186 if (!(dir
= opendir(dirname
)))
1189 while ((dp
= readdir(dir
)) != NULL
) {
1190 #ifdef _DIRENT_HAVE_D_TYPE
1191 if (dp
->d_type
!= DT_UNKNOWN
&& dp
->d_type
!= DT_LNK
)
1194 if (dp
->d_name
[0] == '.' &&
1195 ((dp
->d_name
[1] == 0) ||
1196 ((dp
->d_name
[1] == '.') && (dp
->d_name
[2] == 0))))
1207 * Returns TRUE if a partition on the same disk is already being
1210 static int disk_already_active(struct libmnt_fs
*fs
)
1212 struct fsck_instance
*inst
;
1215 if (force_all_parallel
)
1218 if (instance_list
&& fs_is_stacked(instance_list
->fs
))
1219 /* any instance for a stacked device is already running */
1222 disk
= fs_get_disk(fs
, 1);
1225 * If we don't know the base device, assume that the device is
1226 * already active if there are any fsck instances running.
1228 * Don't check a stacked device with any other disk too.
1230 if (!disk
|| fs_is_stacked(fs
))
1231 return (instance_list
!= NULL
);
1233 for (inst
= instance_list
; inst
; inst
= inst
->next
) {
1234 dev_t idisk
= fs_get_disk(inst
->fs
, 0);
1236 if (!idisk
|| disk
== idisk
)
1243 /* Check all file systems, using the /etc/fstab table. */
1244 static int check_all(void)
1246 int not_done_yet
= 1;
1249 int status
= FSCK_EX_OK
;
1251 struct libmnt_fs
*fs
;
1252 struct libmnt_iter
*itr
= mnt_new_iter(MNT_ITER_FORWARD
);
1255 err(FSCK_EX_ERROR
, _("failed to allocate iterator"));
1258 * Do an initial scan over the filesystem; mark filesystems
1259 * which should be ignored as done, and resolve any "auto"
1260 * filesystem types (done as a side-effect of calling ignore()).
1262 while (mnt_table_next_fs(fstab
, itr
, &fs
) == 0) {
1270 fputs(_("Checking all file systems.\n"), stdout
);
1273 * Find and check the root filesystem.
1275 if (!parallel_root
) {
1276 fs
= mnt_table_find_target(fstab
, "/", MNT_ITER_FORWARD
);
1280 !(ignore_mounted
&& is_mounted(fs
))) {
1281 status
|= fsck_device(fs
, 1);
1282 status
|= wait_many(FLAG_WAIT_ALL
);
1283 if (status
> FSCK_EX_NONDESTRUCT
) {
1293 * This is for the bone-headed user who enters the root
1294 * filesystem twice. Skip root will skip all root entries.
1297 mnt_reset_iter(itr
, MNT_ITER_FORWARD
);
1299 while(mnt_table_next_fs(fstab
, itr
, &fs
) == 0) {
1300 const char *tgt
= mnt_fs_get_target(fs
);
1302 if (tgt
&& strcmp(tgt
, "/") == 0)
1307 while (not_done_yet
) {
1311 mnt_reset_iter(itr
, MNT_ITER_FORWARD
);
1313 while(mnt_table_next_fs(fstab
, itr
, &fs
) == 0) {
1315 if (cancel_requested
)
1320 * If the filesystem's pass number is higher
1321 * than the current pass number, then we don't
1324 if (mnt_fs_get_passno(fs
) > passno
) {
1328 if (ignore_mounted
&& is_mounted(fs
)) {
1333 * If a filesystem on a particular device has
1334 * already been spawned, then we need to defer
1335 * this to another pass.
1337 if (disk_already_active(fs
)) {
1342 * Spawn off the fsck process
1344 status
|= fsck_device(fs
, serialize
);
1348 * Only do one filesystem at a time, or if we
1349 * have a limit on the number of fsck's extant
1350 * at one time, apply that limit.
1353 (max_running
&& (num_running
>= max_running
))) {
1358 if (cancel_requested
)
1361 printf(_("--waiting-- (pass %d)\n"), passno
);
1363 status
|= wait_many(pass_done
? FLAG_WAIT_ALL
:
1364 FLAG_WAIT_ATLEAST_ONE
);
1367 printf("----------------------------------\n");
1373 if (cancel_requested
&& !kill_sent
) {
1378 status
|= wait_many(FLAG_WAIT_ATLEAST_ONE
);
1383 static void __attribute__((__noreturn__
)) usage(void)
1386 fputs(USAGE_HEADER
, out
);
1387 fprintf(out
, _(" %s [options] -- [fs-options] [<filesystem> ...]\n"),
1388 program_invocation_short_name
);
1390 fputs(USAGE_SEPARATOR
, out
);
1391 fputs(_("Check and repair a Linux filesystem.\n"), out
);
1393 fputs(USAGE_OPTIONS
, out
);
1394 fputs(_(" -A check all filesystems\n"), out
);
1395 fputs(_(" -C [<fd>] display progress bar; file descriptor is for GUIs\n"), out
);
1396 fputs(_(" -l lock the device to guarantee exclusive access\n"), out
);
1397 fputs(_(" -M do not check mounted filesystems\n"), out
);
1398 fputs(_(" -N do not execute, just show what would be done\n"), out
);
1399 fputs(_(" -P check filesystems in parallel, including root\n"), out
);
1400 fputs(_(" -R skip root filesystem; useful only with '-A'\n"), out
);
1401 fputs(_(" -r [<fd>] report statistics for each device checked;\n"
1402 " file descriptor is for GUIs\n"), out
);
1403 fputs(_(" -s serialize the checking operations\n"), out
);
1404 fputs(_(" -T do not show the title on startup\n"), out
);
1405 fputs(_(" -t <type> specify filesystem types to be checked;\n"
1406 " <type> is allowed to be a comma-separated list\n"), out
);
1407 fputs(_(" -V explain what is being done\n"), out
);
1409 fputs(USAGE_SEPARATOR
, out
);
1410 printf( " -?, --help %s\n", USAGE_OPTSTR_HELP
);
1411 printf( " --version %s\n", USAGE_OPTSTR_VERSION
);
1412 fputs(USAGE_SEPARATOR
, out
);
1413 fputs(_("See the specific fsck.* commands for available fs-options."), out
);
1414 printf(USAGE_MAN_TAIL("fsck(8)"));
1418 static void signal_cancel(int sig
__attribute__((__unused__
)))
1423 static void parse_argv(int argc
, char *argv
[])
1426 char *arg
, *dev
, *tmp
= NULL
;
1429 int opts_for_fsck
= 0;
1430 struct sigaction sa
;
1431 int report_stats_fd
= -1;
1434 * Set up signal action
1436 memset(&sa
, 0, sizeof(struct sigaction
));
1437 sa
.sa_handler
= signal_cancel
;
1438 sigaction(SIGINT
, &sa
, NULL
);
1439 sigaction(SIGTERM
, &sa
, NULL
);
1443 instance_list
= NULL
;
1445 for (i
=1; i
< argc
; i
++) {
1450 /* the only two longopts to satisfy UL standards */
1451 if (!opts_for_fsck
&& !strcmp(arg
, "--help"))
1453 if (!opts_for_fsck
&& !strcmp(arg
, "--version"))
1454 print_version(FSCK_EX_OK
);
1456 if ((arg
[0] == '/' && !opts_for_fsck
) || strchr(arg
, '=')) {
1457 if (num_devices
>= MAX_DEVICES
)
1458 errx(FSCK_EX_ERROR
, _("too many devices"));
1460 dev
= mnt_resolve_spec(arg
, mntcache
);
1462 if (!dev
&& strchr(arg
, '=')) {
1464 * Check to see if we failed because
1465 * /proc/partitions isn't found.
1467 if (access(_PATH_PROC_PARTITIONS
, R_OK
) < 0) {
1468 warn(_("cannot open %s"),
1469 _PATH_PROC_PARTITIONS
);
1470 errx(FSCK_EX_ERROR
, _("Is /proc mounted?"));
1473 * Check to see if this is because
1474 * we're not running as root
1478 _("must be root to scan for matching filesystems: %s"),
1482 _("couldn't find matching filesystem: %s"),
1485 devices
[num_devices
++] = dev
? dev
: xstrdup(arg
);
1488 if (arg
[0] != '-' || opts_for_fsck
) {
1489 if (num_args
>= MAX_ARGS
)
1490 errx(FSCK_EX_ERROR
, _("too many arguments"));
1491 args
[num_args
++] = xstrdup(arg
);
1494 for (j
=1; arg
[j
]; j
++) {
1495 if (opts_for_fsck
) {
1496 options
[++opt
] = arg
[j
];
1505 if (arg
[j
+1]) { /* -C<fd> */
1506 progress_fd
= string_to_int(arg
+j
+1);
1507 if (progress_fd
< 0)
1511 } else if (i
+1 < argc
&& *argv
[i
+1] != '-') { /* -C <fd> */
1512 progress_fd
= string_to_int(argv
[i
+1]);
1513 if (progress_fd
< 0)
1544 if (arg
[j
+1]) { /* -r<fd> */
1545 report_stats_fd
= strtou32_or_err(arg
+j
+1, _("invalid argument of -r"));
1547 } else if (i
+1 < argc
&& *argv
[i
+1] >= '0' && *argv
[i
+1] <= '9') { /* -r <fd> */
1548 report_stats_fd
= strtou32_or_err(argv
[i
+1], _("invalid argument of -r"));
1560 _("option '%s' may be specified only once"), "-t");
1563 else if ((i
+1) < argc
)
1567 _("option '%s' requires an argument"), "-t");
1568 fstype
= xstrdup(tmp
);
1569 compile_fs_type(fstype
, &fs_type_compiled
);
1578 options
[++opt
] = arg
[j
];
1585 options
[++opt
] = '\0';
1586 if (num_args
>= MAX_ARGS
)
1587 errx(FSCK_EX_ERROR
, _("too many arguments"));
1588 args
[num_args
++] = xstrdup(options
);
1593 /* Validate the report stats file descriptor to avoid disasters */
1594 if (report_stats_fd
>= 0) {
1595 report_stats_file
= fdopen(report_stats_fd
, "w");
1596 if (!report_stats_file
)
1598 _("invalid argument of -r: %d"),
1602 if (getenv("FSCK_FORCE_ALL_PARALLEL"))
1603 force_all_parallel
++;
1604 if ((tmp
= getenv("FSCK_MAX_INST")))
1605 max_running
= atoi(tmp
);
1608 int main(int argc
, char *argv
[])
1611 int interactive
= 0;
1612 struct libmnt_fs
*fs
;
1613 const char *path
= getenv("PATH");
1615 setvbuf(stdout
, NULL
, _IONBF
, BUFSIZ
);
1616 setvbuf(stderr
, NULL
, _IONBF
, BUFSIZ
);
1618 setlocale(LC_MESSAGES
, "");
1619 setlocale(LC_CTYPE
, "");
1620 bindtextdomain(PACKAGE
, LOCALEDIR
);
1621 textdomain(PACKAGE
);
1622 close_stdout_atexit();
1624 strutils_set_exitcode(FSCK_EX_USAGE
);
1625 mnt_init_debug(0); /* init libmount debug mask */
1626 mntcache
= mnt_new_cache(); /* no fatal error if failed */
1628 parse_argv(argc
, argv
);
1631 printf(UTIL_LINUX_VERSION
);
1635 fsck_path
= xstrdup(path
&& *path
? path
: FSCK_DEFAULT_PATH
);
1637 if ((num_devices
== 1) || (serialize
))
1640 if (lockdisk
&& (doall
|| num_devices
> 1)) {
1641 warnx(_("the -l option can be used with one "
1642 "device only -- ignore"));
1646 /* If -A was specified ("check all"), do that! */
1650 if (num_devices
== 0) {
1655 for (i
= 0 ; i
< num_devices
; i
++) {
1656 if (cancel_requested
) {
1663 fs
= lookup(devices
[i
]);
1665 fs
= add_dummy_fs(devices
[i
]);
1666 else if (fs_ignored_type(fs
))
1668 if (ignore_mounted
&& is_mounted(fs
))
1670 status
|= fsck_device(fs
, interactive
);
1672 (max_running
&& (num_running
>= max_running
))) {
1673 struct fsck_instance
*inst
;
1677 status
|= inst
->exit_status
;
1678 free_instance(inst
);
1681 printf("----------------------------------\n");
1684 status
|= wait_many(FLAG_WAIT_ALL
);
1686 mnt_unref_cache(mntcache
);
1687 mnt_unref_table(fstab
);
1688 mnt_unref_table(mtab
);