2 * Copyright (c) 1980, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 static const char copyright[] =
33 "@(#) Copyright (c) 1980, 1986, 1993\n\
34 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95";
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
44 #include <sys/param.h>
46 #include <sys/mount.h>
47 #include <sys/resource.h>
49 #include <sys/sysctl.h>
51 #include <sys/disklabel.h>
53 #include <ufs/ufs/dinode.h>
54 #include <ufs/ffs/fs.h>
68 static void usage(void) __dead2;
69 static int argtoi(int flag, const char *req, const char *str, int base);
70 static int checkfilesys(char *filesys);
71 static int chkdoreload(struct statfs *mntp);
72 static struct statfs *getmntpt(const char *);
75 main(int argc, char *argv[])
79 struct itimerval itimerval;
85 while ((ch = getopt(argc, argv, "b:Bc:CdEfFm:npryZ")) != -1) {
89 bflag = argtoi('b', "number", optarg, 10);
90 printf("Alternate super block location: %d\n", bflag);
99 cvtlevel = argtoi('c', "conversion level", optarg, 10);
101 errx(EEXIT, "cannot do level %d conversion",
122 lfmode = argtoi('m', "mode", optarg, 8);
124 errx(EEXIT, "bad mode to -m: %o", lfmode);
125 printf("** lost+found creation mode %o\n", lfmode);
164 if (signal(SIGINT, SIG_IGN) != SIG_IGN)
165 (void)signal(SIGINT, catch);
167 (void)signal(SIGQUIT, catchquit);
168 signal(SIGINFO, infohandler);
170 signal(SIGALRM, alarmhandler);
171 itimerval.it_interval.tv_sec = 5;
172 itimerval.it_interval.tv_usec = 0;
173 itimerval.it_value.tv_sec = 5;
174 itimerval.it_value.tv_usec = 0;
175 setitimer(ITIMER_REAL, &itimerval, NULL);
178 * Push up our allowed memory limit so we can cope
179 * with huge file systems.
181 if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
182 rlimit.rlim_cur = rlimit.rlim_max;
183 (void)setrlimit(RLIMIT_DATA, &rlimit);
186 (void)checkfilesys(*argv++);
194 argtoi(int flag, const char *req, const char *str, int base)
199 ret = (int)strtol(str, &cp, base);
200 if (cp == str || *cp)
201 errx(EEXIT, "-%c flag requires a %s", flag, req);
206 * Check the specified file system.
210 checkfilesys(char *filesys)
212 ufs2_daddr_t n_ffree, n_bfree;
230 if (debug && ckclean)
233 * Make best effort to get the disk name. Check first to see
234 * if it is listed among the mounted file systems. Failing that
235 * check to see if it is listed in /etc/fstab.
237 mntp = getmntpt(filesys);
239 filesys = mntp->f_mntfromname;
241 filesys = blockcheck(filesys);
243 * If -F flag specified, check to see whether a background check
244 * is possible and needed. If possible and needed, exit with
245 * status zero. Otherwise exit with status non-zero. A non-zero
246 * exit status will cause a foreground check to be run.
250 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
251 exit(3); /* Cannot read superblock */
253 /* Earlier background failed or journaled */
254 if (sblock.fs_flags & (FS_NEEDSFSCK | FS_SUJ))
256 if ((sblock.fs_flags & FS_DOSOFTDEP) == 0)
257 exit(5); /* Not running soft updates */
259 if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0)
260 exit(6); /* Lacks kernel support */
261 if ((mntp == NULL && sblock.fs_clean == 1) ||
262 (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0))
263 exit(7); /* Filesystem clean, report it now */
266 if (ckclean && skipclean) {
268 * If file system is gjournaled, check it here.
270 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
271 exit(3); /* Cannot read superblock */
273 if ((sblock.fs_flags & FS_GJOURNAL) != 0) {
274 //printf("GJournaled file system detected on %s.\n",
276 if (sblock.fs_clean == 1) {
277 pwarn("FILE SYSTEM CLEAN; SKIPPING CHECKS\n");
280 if ((sblock.fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) == 0) {
281 gjournal_check(filesys);
282 if (chkdoreload(mntp) == 0)
286 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
287 "CANNOT RUN FAST FSCK\n");
292 * If we are to do a background check:
293 * Get the mount point information of the file system
294 * create snapshot file
295 * return created snapshot file
296 * if not found, clear bkgrdflag and proceed with normal fsck
301 pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
302 } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) {
304 pfatal("NOT USING SOFT UPDATES, %s\n",
305 "CANNOT RUN IN BACKGROUND");
306 } else if ((mntp->f_flags & MNT_RDONLY) != 0) {
308 pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
309 } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) {
310 if (readsb(0) != 0) {
311 if (sblock.fs_flags & (FS_NEEDSFSCK | FS_SUJ)) {
313 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
314 "CANNOT RUN IN BACKGROUND\n");
316 if ((sblock.fs_flags & FS_UNCLEAN) == 0 &&
317 skipclean && ckclean) {
319 * file system is clean;
320 * skip snapshot and report it clean
322 pwarn("FILE SYSTEM CLEAN; %s\n",
330 snprintf(snapname, sizeof snapname, "%s/.snap",
332 if (stat(snapname, &snapdir) < 0) {
333 if (errno != ENOENT) {
335 pfatal("CANNOT FIND %s %s: %s, %s\n",
336 "SNAPSHOT DIRECTORY",
337 snapname, strerror(errno),
338 "CANNOT RUN IN BACKGROUND");
339 } else if ((grp = getgrnam("operator")) == 0 ||
340 mkdir(snapname, 0770) < 0 ||
341 chown(snapname, -1, grp->gr_gid) < 0 ||
342 chmod(snapname, 0770) < 0) {
344 pfatal("CANNOT CREATE %s %s: %s, %s\n",
345 "SNAPSHOT DIRECTORY",
346 snapname, strerror(errno),
347 "CANNOT RUN IN BACKGROUND");
349 } else if (!S_ISDIR(snapdir.st_mode)) {
351 pfatal("%s IS NOT A DIRECTORY, %s\n", snapname,
352 "CANNOT RUN IN BACKGROUND");
356 snprintf(snapname, sizeof snapname,
357 "%s/.snap/fsck_snapshot", mntp->f_mntonname);
358 build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
359 build_iovec(&iov, &iovlen, "from", snapname,
361 build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
363 build_iovec(&iov, &iovlen, "errmsg", errmsg,
365 build_iovec(&iov, &iovlen, "update", NULL, 0);
366 build_iovec(&iov, &iovlen, "snapshot", NULL, 0);
368 while (nmount(iov, iovlen, mntp->f_flags) < 0) {
369 if (errno == EEXIST && unlink(snapname) == 0)
372 pfatal("CANNOT CREATE SNAPSHOT %s: %s %s\n",
373 snapname, strerror(errno), errmsg);
381 switch (setup(filesys)) {
384 pfatal("CAN'T CHECK FILE SYSTEM.");
388 pwarn("clean, %ld free ", (long)(sblock.fs_cstotal.cs_nffree +
389 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree));
390 printf("(%lld frags, %lld blocks, %.1f%% fragmentation)\n",
391 (long long)sblock.fs_cstotal.cs_nffree,
392 (long long)sblock.fs_cstotal.cs_nbfree,
393 sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
397 * Determine if we can and should do journal recovery.
399 if ((sblock.fs_flags & FS_SUJ) == FS_SUJ) {
400 if ((sblock.fs_flags & FS_NEEDSFSCK) != FS_NEEDSFSCK && skipclean) {
401 if (preen || reply("USE JOURNAL")) {
402 if (suj_check(filesys) == 0) {
403 printf("\n***** FILE SYSTEM MARKED CLEAN *****\n");
404 if (chkdoreload(mntp) == 0)
409 printf("** Skipping journal, falling through to full fsck\n\n");
412 * Write the superblock so we don't try to recover the
413 * journal on another pass.
415 sblock.fs_mtime = time(NULL);
420 * Cleared if any questions answered no. Used to decide if
421 * the superblock should be marked clean.
425 * 1: scan inodes tallying blocks used
428 printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
429 if (mntp != NULL && mntp->f_flags & MNT_ROOTFS)
430 printf("** Root file system\n");
431 printf("** Phase 1 - Check Blocks and Sizes\n");
433 clock_gettime(CLOCK_REALTIME_PRECISE, &startprog);
438 * 1b: locate first references to duplicates, if any
441 if (preen || usedsoftdep)
442 pfatal("INTERNAL ERROR: dups with %s%s%s",
444 (preen && usedsoftdep) ? " and " : "",
445 usedsoftdep ? "softupdates" : "");
446 printf("** Phase 1b - Rescan For More DUPS\n");
452 * 2: traverse directories from root to mark all connected directories
455 printf("** Phase 2 - Check Pathnames\n");
460 * 3: scan inodes looking for disconnected directories
463 printf("** Phase 3 - Check Connectivity\n");
468 * 4: scan inodes looking for disconnected files; check reference counts
471 printf("** Phase 4 - Check Reference Counts\n");
476 * 5: check and repair resource counts in cylinder groups
479 printf("** Phase 5 - Check Cyl groups\n");
484 * print out summary statistics
486 n_ffree = sblock.fs_cstotal.cs_nffree;
487 n_bfree = sblock.fs_cstotal.cs_nbfree;
488 files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files;
490 sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
491 blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
492 blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
493 blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks;
494 if (bkgrdflag && (files > 0 || blks > 0)) {
495 countdirs = sblock.fs_cstotal.cs_ndir - countdirs;
496 pwarn("Reclaimed: %ld directories, %ld files, %lld fragments\n",
497 countdirs, (long)files - countdirs, (long long)blks);
499 pwarn("%ld files, %jd used, %ju free ",
500 (long)n_files, (intmax_t)n_blks,
501 (uintmax_t)n_ffree + sblock.fs_frag * n_bfree);
502 printf("(%ju frags, %ju blocks, %.1f%% fragmentation)\n",
503 (uintmax_t)n_ffree, (uintmax_t)n_bfree,
504 n_ffree * 100.0 / sblock.fs_dsize);
507 printf("%d inodes missing\n", -files);
509 printf("%lld blocks missing\n", -(long long)blks);
510 if (duplist != NULL) {
511 printf("The following duplicate blocks remain:");
512 for (dp = duplist; dp; dp = dp->next)
513 printf(" %lld,", (long long)dp->dup);
517 duplist = (struct dups *)0;
518 muldup = (struct dups *)0;
521 sblock.fs_time = time(NULL);
524 if (cvtlevel && sblk.b_dirty) {
526 * Write out the duplicate super blocks
528 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
529 blwrite(fswritefd, (char *)&sblock,
530 fsbtodb(&sblock, cgsblock(&sblock, cylno)),
538 * Check to see if the file system is mounted read-write.
540 if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0)
544 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
545 if (inostathead[cylno].il_stat != NULL)
546 free((char *)inostathead[cylno].il_stat);
547 free((char *)inostathead);
549 if (fsmodified && !preen)
550 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
552 printf("\n***** PLEASE RERUN FSCK *****\n");
553 if (chkdoreload(mntp) != 0) {
557 printf("\n***** REBOOT NOW *****\n");
565 chkdoreload(struct statfs *mntp)
578 * We modified a mounted file system. Do a mount update on
579 * it unless it is read-write, so we can continue using it
580 * as safely as possible.
582 if (mntp->f_flags & MNT_RDONLY) {
583 build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
584 build_iovec(&iov, &iovlen, "from", mntp->f_mntfromname,
586 build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
588 build_iovec(&iov, &iovlen, "errmsg", errmsg,
590 build_iovec(&iov, &iovlen, "update", NULL, 0);
591 build_iovec(&iov, &iovlen, "reload", NULL, 0);
593 * XX: We need the following line until we clean up
594 * nmount parsing of root mounts and NFS root mounts.
596 build_iovec(&iov, &iovlen, "ro", NULL, 0);
597 if (nmount(iov, iovlen, mntp->f_flags) == 0) {
600 pwarn("mount reload of '%s' failed: %s %s\n\n",
601 mntp->f_mntonname, strerror(errno), errmsg);
608 * Get the mount point information for name.
610 static struct statfs *
611 getmntpt(const char *name)
613 struct stat devstat, mntdevstat;
614 char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
616 struct statfs *mntbuf, *statfsp;
617 int i, mntsize, isdev;
619 if (stat(name, &devstat) != 0)
621 if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))
625 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
626 for (i = 0; i < mntsize; i++) {
627 statfsp = &mntbuf[i];
628 ddevname = statfsp->f_mntfromname;
629 if (*ddevname != '/') {
630 strcpy(device, _PATH_DEV);
631 strcat(device, ddevname);
632 strcpy(statfsp->f_mntfromname, device);
635 if (strcmp(name, statfsp->f_mntonname))
639 if (stat(ddevname, &mntdevstat) == 0 &&
640 mntdevstat.st_rdev == devstat.st_rdev)
650 (void) fprintf(stderr,
651 "usage: %s [-BEFfnpry] [-b block] [-c level] [-m mode] "