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:npry")) != -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);
160 if (signal(SIGINT, SIG_IGN) != SIG_IGN)
161 (void)signal(SIGINT, catch);
163 (void)signal(SIGQUIT, catchquit);
164 signal(SIGINFO, infohandler);
166 signal(SIGALRM, alarmhandler);
167 itimerval.it_interval.tv_sec = 5;
168 itimerval.it_interval.tv_usec = 0;
169 itimerval.it_value.tv_sec = 5;
170 itimerval.it_value.tv_usec = 0;
171 setitimer(ITIMER_REAL, &itimerval, NULL);
174 * Push up our allowed memory limit so we can cope
175 * with huge file systems.
177 if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
178 rlimit.rlim_cur = rlimit.rlim_max;
179 (void)setrlimit(RLIMIT_DATA, &rlimit);
182 (void)checkfilesys(*argv++);
190 argtoi(int flag, const char *req, const char *str, int base)
195 ret = (int)strtol(str, &cp, base);
196 if (cp == str || *cp)
197 errx(EEXIT, "-%c flag requires a %s", flag, req);
202 * Check the specified file system.
206 checkfilesys(char *filesys)
208 ufs2_daddr_t n_ffree, n_bfree;
226 if (debug && ckclean)
229 * Make best effort to get the disk name. Check first to see
230 * if it is listed among the mounted file systems. Failing that
231 * check to see if it is listed in /etc/fstab.
233 mntp = getmntpt(filesys);
235 filesys = mntp->f_mntfromname;
237 filesys = blockcheck(filesys);
239 * If -F flag specified, check to see whether a background check
240 * is possible and needed. If possible and needed, exit with
241 * status zero. Otherwise exit with status non-zero. A non-zero
242 * exit status will cause a foreground check to be run.
246 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
247 exit(3); /* Cannot read superblock */
249 /* Earlier background failed or journaled */
250 if (sblock.fs_flags & (FS_NEEDSFSCK | FS_SUJ))
252 if ((sblock.fs_flags & FS_DOSOFTDEP) == 0)
253 exit(5); /* Not running soft updates */
255 if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0)
256 exit(6); /* Lacks kernel support */
257 if ((mntp == NULL && sblock.fs_clean == 1) ||
258 (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0))
259 exit(7); /* Filesystem clean, report it now */
262 if (ckclean && skipclean) {
264 * If file system is gjournaled, check it here.
266 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
267 exit(3); /* Cannot read superblock */
269 if ((sblock.fs_flags & FS_GJOURNAL) != 0) {
270 //printf("GJournaled file system detected on %s.\n",
272 if (sblock.fs_clean == 1) {
273 pwarn("FILE SYSTEM CLEAN; SKIPPING CHECKS\n");
276 if ((sblock.fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) == 0) {
277 gjournal_check(filesys);
278 if (chkdoreload(mntp) == 0)
282 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
283 "CANNOT RUN FAST FSCK\n");
288 * If we are to do a background check:
289 * Get the mount point information of the file system
290 * create snapshot file
291 * return created snapshot file
292 * if not found, clear bkgrdflag and proceed with normal fsck
297 pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
298 } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) {
300 pfatal("NOT USING SOFT UPDATES, %s\n",
301 "CANNOT RUN IN BACKGROUND");
302 } else if ((mntp->f_flags & MNT_RDONLY) != 0) {
304 pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
305 } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) {
306 if (readsb(0) != 0) {
307 if (sblock.fs_flags & (FS_NEEDSFSCK | FS_SUJ)) {
309 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
310 "CANNOT RUN IN BACKGROUND\n");
312 if ((sblock.fs_flags & FS_UNCLEAN) == 0 &&
313 skipclean && ckclean) {
315 * file system is clean;
316 * skip snapshot and report it clean
318 pwarn("FILE SYSTEM CLEAN; %s\n",
326 snprintf(snapname, sizeof snapname, "%s/.snap",
328 if (stat(snapname, &snapdir) < 0) {
329 if (errno != ENOENT) {
331 pfatal("CANNOT FIND %s %s: %s, %s\n",
332 "SNAPSHOT DIRECTORY",
333 snapname, strerror(errno),
334 "CANNOT RUN IN BACKGROUND");
335 } else if ((grp = getgrnam("operator")) == 0 ||
336 mkdir(snapname, 0770) < 0 ||
337 chown(snapname, -1, grp->gr_gid) < 0 ||
338 chmod(snapname, 0770) < 0) {
340 pfatal("CANNOT CREATE %s %s: %s, %s\n",
341 "SNAPSHOT DIRECTORY",
342 snapname, strerror(errno),
343 "CANNOT RUN IN BACKGROUND");
345 } else if (!S_ISDIR(snapdir.st_mode)) {
347 pfatal("%s IS NOT A DIRECTORY, %s\n", snapname,
348 "CANNOT RUN IN BACKGROUND");
352 snprintf(snapname, sizeof snapname,
353 "%s/.snap/fsck_snapshot", mntp->f_mntonname);
354 build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
355 build_iovec(&iov, &iovlen, "from", snapname,
357 build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
359 build_iovec(&iov, &iovlen, "errmsg", errmsg,
361 build_iovec(&iov, &iovlen, "update", NULL, 0);
362 build_iovec(&iov, &iovlen, "snapshot", NULL, 0);
364 while (nmount(iov, iovlen, mntp->f_flags) < 0) {
365 if (errno == EEXIST && unlink(snapname) == 0)
368 pfatal("CANNOT CREATE SNAPSHOT %s: %s %s\n",
369 snapname, strerror(errno), errmsg);
377 switch (setup(filesys)) {
380 pfatal("CAN'T CHECK FILE SYSTEM.");
384 pwarn("clean, %ld free ", (long)(sblock.fs_cstotal.cs_nffree +
385 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree));
386 printf("(%lld frags, %lld blocks, %.1f%% fragmentation)\n",
387 (long long)sblock.fs_cstotal.cs_nffree,
388 (long long)sblock.fs_cstotal.cs_nbfree,
389 sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
393 * Determine if we can and should do journal recovery.
395 if ((sblock.fs_flags & FS_SUJ) == FS_SUJ) {
396 if ((sblock.fs_flags & FS_NEEDSFSCK) != FS_NEEDSFSCK && skipclean) {
397 if (preen || reply("USE JOURNAL")) {
398 if (suj_check(filesys) == 0) {
399 printf("\n***** FILE SYSTEM MARKED CLEAN *****\n");
400 if (chkdoreload(mntp) == 0)
405 printf("** Skipping journal, falling through to full fsck\n\n");
408 * Write the superblock so we don't try to recover the
409 * journal on another pass.
411 sblock.fs_mtime = time(NULL);
416 * Cleared if any questions answered no. Used to decide if
417 * the superblock should be marked clean.
421 * 1: scan inodes tallying blocks used
424 printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
425 if (mntp != NULL && mntp->f_flags & MNT_ROOTFS)
426 printf("** Root file system\n");
427 printf("** Phase 1 - Check Blocks and Sizes\n");
432 * 1b: locate first references to duplicates, if any
435 if (preen || usedsoftdep)
436 pfatal("INTERNAL ERROR: dups with %s%s%s",
438 (preen && usedsoftdep) ? " and " : "",
439 usedsoftdep ? "softupdates" : "");
440 printf("** Phase 1b - Rescan For More DUPS\n");
445 * 2: traverse directories from root to mark all connected directories
448 printf("** Phase 2 - Check Pathnames\n");
452 * 3: scan inodes looking for disconnected directories
455 printf("** Phase 3 - Check Connectivity\n");
459 * 4: scan inodes looking for disconnected files; check reference counts
462 printf("** Phase 4 - Check Reference Counts\n");
466 * 5: check and repair resource counts in cylinder groups
469 printf("** Phase 5 - Check Cyl groups\n");
473 * print out summary statistics
475 n_ffree = sblock.fs_cstotal.cs_nffree;
476 n_bfree = sblock.fs_cstotal.cs_nbfree;
477 files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files;
479 sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
480 blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
481 blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
482 blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks;
483 if (bkgrdflag && (files > 0 || blks > 0)) {
484 countdirs = sblock.fs_cstotal.cs_ndir - countdirs;
485 pwarn("Reclaimed: %ld directories, %ld files, %lld fragments\n",
486 countdirs, (long)files - countdirs, (long long)blks);
488 pwarn("%ld files, %jd used, %ju free ",
489 (long)n_files, (intmax_t)n_blks,
490 (uintmax_t)n_ffree + sblock.fs_frag * n_bfree);
491 printf("(%ju frags, %ju blocks, %.1f%% fragmentation)\n",
492 (uintmax_t)n_ffree, (uintmax_t)n_bfree,
493 n_ffree * 100.0 / sblock.fs_dsize);
496 printf("%d inodes missing\n", -files);
498 printf("%lld blocks missing\n", -(long long)blks);
499 if (duplist != NULL) {
500 printf("The following duplicate blocks remain:");
501 for (dp = duplist; dp; dp = dp->next)
502 printf(" %lld,", (long long)dp->dup);
506 duplist = (struct dups *)0;
507 muldup = (struct dups *)0;
510 sblock.fs_time = time(NULL);
513 if (cvtlevel && sblk.b_dirty) {
515 * Write out the duplicate super blocks
517 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
518 blwrite(fswritefd, (char *)&sblock,
519 fsbtodb(&sblock, cgsblock(&sblock, cylno)),
526 * Check to see if the file system is mounted read-write.
528 if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0)
532 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
533 if (inostathead[cylno].il_stat != NULL)
534 free((char *)inostathead[cylno].il_stat);
535 free((char *)inostathead);
537 if (fsmodified && !preen)
538 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
540 printf("\n***** PLEASE RERUN FSCK *****\n");
541 if (chkdoreload(mntp) != 0) {
545 printf("\n***** REBOOT NOW *****\n");
553 chkdoreload(struct statfs *mntp)
566 * We modified a mounted file system. Do a mount update on
567 * it unless it is read-write, so we can continue using it
568 * as safely as possible.
570 if (mntp->f_flags & MNT_RDONLY) {
571 build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
572 build_iovec(&iov, &iovlen, "from", mntp->f_mntfromname,
574 build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
576 build_iovec(&iov, &iovlen, "errmsg", errmsg,
578 build_iovec(&iov, &iovlen, "update", NULL, 0);
579 build_iovec(&iov, &iovlen, "reload", NULL, 0);
581 * XX: We need the following line until we clean up
582 * nmount parsing of root mounts and NFS root mounts.
584 build_iovec(&iov, &iovlen, "ro", NULL, 0);
585 if (nmount(iov, iovlen, mntp->f_flags) == 0) {
588 pwarn("mount reload of '%s' failed: %s %s\n\n",
589 mntp->f_mntonname, strerror(errno), errmsg);
596 * Get the mount point information for name.
598 static struct statfs *
599 getmntpt(const char *name)
601 struct stat devstat, mntdevstat;
602 char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
604 struct statfs *mntbuf, *statfsp;
605 int i, mntsize, isdev;
607 if (stat(name, &devstat) != 0)
609 if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))
613 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
614 for (i = 0; i < mntsize; i++) {
615 statfsp = &mntbuf[i];
616 ddevname = statfsp->f_mntfromname;
617 if (*ddevname != '/') {
618 strcpy(device, _PATH_DEV);
619 strcat(device, ddevname);
620 strcpy(statfsp->f_mntfromname, device);
623 if (strcmp(name, statfsp->f_mntonname))
627 if (stat(ddevname, &mntdevstat) == 0 &&
628 mntdevstat.st_rdev == devstat.st_rdev)
638 (void) fprintf(stderr,
639 "usage: %s [-BEFfnpry] [-b block] [-c level] [-m mode] "