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>
48 #include <sys/mount.h>
49 #include <sys/resource.h>
50 #include <sys/sysctl.h>
52 #include <sys/disklabel.h>
54 #include <ufs/ufs/dinode.h>
55 #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;
84 while ((ch = getopt(argc, argv, "b:Bc:dfFm:npy")) != -1) {
88 bflag = argtoi('b', "number", optarg, 10);
89 printf("Alternate super block location: %d\n", bflag);
98 cvtlevel = argtoi('c', "conversion level", optarg, 10);
100 errx(EEXIT, "cannot do level %d conversion",
117 lfmode = argtoi('m', "mode", optarg, 8);
119 errx(EEXIT, "bad mode to -m: %o", lfmode);
120 printf("** lost+found creation mode %o\n", lfmode);
147 if (signal(SIGINT, SIG_IGN) != SIG_IGN)
148 (void)signal(SIGINT, catch);
150 (void)signal(SIGQUIT, catchquit);
151 signal(SIGINFO, infohandler);
153 signal(SIGALRM, alarmhandler);
154 itimerval.it_interval.tv_sec = 5;
155 itimerval.it_interval.tv_usec = 0;
156 itimerval.it_value.tv_sec = 5;
157 itimerval.it_value.tv_usec = 0;
158 setitimer(ITIMER_REAL, &itimerval, NULL);
161 * Push up our allowed memory limit so we can cope
162 * with huge file systems.
164 if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
165 rlimit.rlim_cur = rlimit.rlim_max;
166 (void)setrlimit(RLIMIT_DATA, &rlimit);
169 (void)checkfilesys(*argv++);
177 argtoi(int flag, const char *req, const char *str, int base)
182 ret = (int)strtol(str, &cp, base);
183 if (cp == str || *cp)
184 errx(EEXIT, "-%c flag requires a %s", flag, req);
189 * Check the specified file system.
193 checkfilesys(char *filesys)
195 ufs2_daddr_t n_ffree, n_bfree;
217 * Make best effort to get the disk name. Check first to see
218 * if it is listed among the mounted file systems. Failing that
219 * check to see if it is listed in /etc/fstab.
221 mntp = getmntpt(filesys);
223 filesys = mntp->f_mntfromname;
225 filesys = blockcheck(filesys);
227 * If -F flag specified, check to see whether a background check
228 * is possible and needed. If possible and needed, exit with
229 * status zero. Otherwise exit with status non-zero. A non-zero
230 * exit status will cause a foreground check to be run.
234 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
235 exit(3); /* Cannot read superblock */
237 if (sblock.fs_flags & FS_NEEDSFSCK)
238 exit(4); /* Earlier background failed */
239 if ((sblock.fs_flags & FS_DOSOFTDEP) == 0)
240 exit(5); /* Not running soft updates */
242 if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0)
243 exit(6); /* Lacks kernel support */
244 if ((mntp == NULL && sblock.fs_clean == 1) ||
245 (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0))
246 exit(7); /* Filesystem clean, report it now */
249 if (preen && skipclean) {
251 * If file system is gjournaled, check it here.
253 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
254 exit(3); /* Cannot read superblock */
256 if ((sblock.fs_flags & FS_GJOURNAL) != 0) {
257 //printf("GJournaled file system detected on %s.\n",
259 if (sblock.fs_clean == 1) {
260 pwarn("FILE SYSTEM CLEAN; SKIPPING CHECKS\n");
263 if ((sblock.fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) == 0) {
264 gjournal_check(filesys);
265 if (chkdoreload(mntp) == 0)
269 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
270 "CANNOT RUN FAST FSCK\n");
275 * If we are to do a background check:
276 * Get the mount point information of the file system
277 * create snapshot file
278 * return created snapshot file
279 * if not found, clear bkgrdflag and proceed with normal fsck
284 pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
285 } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) {
287 pfatal("NOT USING SOFT UPDATES, %s\n",
288 "CANNOT RUN IN BACKGROUND");
289 } else if ((mntp->f_flags & MNT_RDONLY) != 0) {
291 pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
292 } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) {
293 if (readsb(0) != 0) {
294 if (sblock.fs_flags & FS_NEEDSFSCK) {
296 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
297 "CANNOT RUN IN BACKGROUND\n");
299 if ((sblock.fs_flags & FS_UNCLEAN) == 0 &&
300 skipclean && preen) {
302 * file system is clean;
303 * skip snapshot and report it clean
305 pwarn("FILE SYSTEM CLEAN; %s\n",
313 snprintf(snapname, sizeof snapname, "%s/.snap",
315 if (stat(snapname, &snapdir) < 0) {
316 if (errno != ENOENT) {
318 pfatal("CANNOT FIND %s %s: %s, %s\n",
319 "SNAPSHOT DIRECTORY",
320 snapname, strerror(errno),
321 "CANNOT RUN IN BACKGROUND");
322 } else if ((grp = getgrnam("operator")) == 0 ||
323 mkdir(snapname, 0770) < 0 ||
324 chown(snapname, -1, grp->gr_gid) < 0 ||
325 chmod(snapname, 0770) < 0) {
327 pfatal("CANNOT CREATE %s %s: %s, %s\n",
328 "SNAPSHOT DIRECTORY",
329 snapname, strerror(errno),
330 "CANNOT RUN IN BACKGROUND");
332 } else if (!S_ISDIR(snapdir.st_mode)) {
334 pfatal("%s IS NOT A DIRECTORY, %s\n", snapname,
335 "CANNOT RUN IN BACKGROUND");
339 snprintf(snapname, sizeof snapname,
340 "%s/.snap/fsck_snapshot", mntp->f_mntonname);
341 fflags = mntp->f_flags;
343 * XXX: Need to kick out MNT_ROOTFS until we fix
346 fflags &= ~MNT_ROOTFS;
347 fflags = fflags | MNT_UPDATE | MNT_SNAPSHOT;
348 build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
349 build_iovec(&iov, &iovlen, "from", snapname,
351 build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
353 build_iovec(&iov, &iovlen, "errmsg", errmsg,
356 while (nmount(iov, iovlen, fflags) < 0) {
357 if (errno == EEXIST && unlink(snapname) == 0)
360 pfatal("CANNOT CREATE SNAPSHOT %s: %s %s\n",
361 snapname, strerror(errno), errmsg);
369 switch (setup(filesys)) {
372 pfatal("CAN'T CHECK FILE SYSTEM.");
376 pwarn("clean, %ld free ", (long)(sblock.fs_cstotal.cs_nffree +
377 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree));
378 printf("(%lld frags, %lld blocks, %.1f%% fragmentation)\n",
379 (long long)sblock.fs_cstotal.cs_nffree,
380 (long long)sblock.fs_cstotal.cs_nbfree,
381 sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
386 * Cleared if any questions answered no. Used to decide if
387 * the superblock should be marked clean.
391 * 1: scan inodes tallying blocks used
394 printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
395 if (mntp != NULL && mntp->f_flags & MNT_ROOTFS)
396 printf("** Root file system\n");
397 printf("** Phase 1 - Check Blocks and Sizes\n");
402 * 1b: locate first references to duplicates, if any
405 if (preen || usedsoftdep)
406 pfatal("INTERNAL ERROR: dups with -p");
407 printf("** Phase 1b - Rescan For More DUPS\n");
412 * 2: traverse directories from root to mark all connected directories
415 printf("** Phase 2 - Check Pathnames\n");
419 * 3: scan inodes looking for disconnected directories
422 printf("** Phase 3 - Check Connectivity\n");
426 * 4: scan inodes looking for disconnected files; check reference counts
429 printf("** Phase 4 - Check Reference Counts\n");
433 * 5: check and repair resource counts in cylinder groups
436 printf("** Phase 5 - Check Cyl groups\n");
440 * print out summary statistics
442 n_ffree = sblock.fs_cstotal.cs_nffree;
443 n_bfree = sblock.fs_cstotal.cs_nbfree;
444 files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files;
446 sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
447 blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
448 blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
449 blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks;
450 if (bkgrdflag && (files > 0 || blks > 0)) {
451 countdirs = sblock.fs_cstotal.cs_ndir - countdirs;
452 pwarn("Reclaimed: %ld directories, %ld files, %lld fragments\n",
453 countdirs, (long)files - countdirs, (long long)blks);
455 pwarn("%ld files, %jd used, %ju free ",
456 (long)n_files, (intmax_t)n_blks,
457 (uintmax_t)n_ffree + sblock.fs_frag * n_bfree);
458 printf("(%ju frags, %ju blocks, %.1f%% fragmentation)\n",
459 (uintmax_t)n_ffree, (uintmax_t)n_bfree,
460 n_ffree * 100.0 / sblock.fs_dsize);
463 printf("%d inodes missing\n", -files);
465 printf("%lld blocks missing\n", -(long long)blks);
466 if (duplist != NULL) {
467 printf("The following duplicate blocks remain:");
468 for (dp = duplist; dp; dp = dp->next)
469 printf(" %lld,", (long long)dp->dup);
473 duplist = (struct dups *)0;
474 muldup = (struct dups *)0;
477 sblock.fs_time = time(NULL);
480 if (cvtlevel && sblk.b_dirty) {
482 * Write out the duplicate super blocks
484 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
485 blwrite(fswritefd, (char *)&sblock,
486 fsbtodb(&sblock, cgsblock(&sblock, cylno)),
493 * Check to see if the file system is mounted read-write.
495 if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0)
499 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
500 if (inostathead[cylno].il_stat != NULL)
501 free((char *)inostathead[cylno].il_stat);
502 free((char *)inostathead);
504 if (fsmodified && !preen)
505 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
507 printf("\n***** PLEASE RERUN FSCK *****\n");
508 if (chkdoreload(mntp) != 0) {
512 printf("\n***** REBOOT NOW *****\n");
520 chkdoreload(struct statfs *mntp)
533 fflags = mntp->f_flags;
535 * We modified a mounted file system. Do a mount update on
536 * it unless it is read-write, so we can continue using it
537 * as safely as possible.
539 if (mntp->f_flags & MNT_RDONLY) {
541 * XXX: Need to kick out MNT_ROOTFS until we fix
544 fflags &= ~MNT_ROOTFS;
545 fflags = fflags | MNT_UPDATE | MNT_RELOAD;
546 build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
547 build_iovec(&iov, &iovlen, "from", mntp->f_mntfromname,
549 build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
551 build_iovec(&iov, &iovlen, "errmsg", errmsg,
553 if (nmount(iov, iovlen, fflags) == 0) {
556 pwarn("mount reload of '%s' failed: %s %s\n\n",
557 mntp->f_mntonname, strerror(errno), errmsg);
564 * Get the mount point information for name.
566 static struct statfs *
567 getmntpt(const char *name)
569 struct stat devstat, mntdevstat;
570 char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
572 struct statfs *mntbuf, *statfsp;
573 int i, mntsize, isdev;
575 if (stat(name, &devstat) != 0)
577 if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))
581 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
582 for (i = 0; i < mntsize; i++) {
583 statfsp = &mntbuf[i];
584 ddevname = statfsp->f_mntfromname;
585 if (*ddevname != '/') {
586 strcpy(device, _PATH_DEV);
587 strcat(device, ddevname);
588 strcpy(statfsp->f_mntfromname, device);
591 if (strcmp(name, statfsp->f_mntonname))
595 if (stat(ddevname, &mntdevstat) == 0 &&
596 mntdevstat.st_rdev == devstat.st_rdev)
606 (void) fprintf(stderr,
607 "usage: %s [-BFpfny] [-b block] [-c level] [-m mode] "