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;
85 while ((ch = getopt(argc, argv, "b:Bc:CdfFm: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",
118 lfmode = argtoi('m', "mode", optarg, 8);
120 errx(EEXIT, "bad mode to -m: %o", lfmode);
121 printf("** lost+found creation mode %o\n", lfmode);
156 if (signal(SIGINT, SIG_IGN) != SIG_IGN)
157 (void)signal(SIGINT, catch);
159 (void)signal(SIGQUIT, catchquit);
160 signal(SIGINFO, infohandler);
162 signal(SIGALRM, alarmhandler);
163 itimerval.it_interval.tv_sec = 5;
164 itimerval.it_interval.tv_usec = 0;
165 itimerval.it_value.tv_sec = 5;
166 itimerval.it_value.tv_usec = 0;
167 setitimer(ITIMER_REAL, &itimerval, NULL);
170 * Push up our allowed memory limit so we can cope
171 * with huge file systems.
173 if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
174 rlimit.rlim_cur = rlimit.rlim_max;
175 (void)setrlimit(RLIMIT_DATA, &rlimit);
178 (void)checkfilesys(*argv++);
186 argtoi(int flag, const char *req, const char *str, int base)
191 ret = (int)strtol(str, &cp, base);
192 if (cp == str || *cp)
193 errx(EEXIT, "-%c flag requires a %s", flag, req);
198 * Check the specified file system.
202 checkfilesys(char *filesys)
204 ufs2_daddr_t n_ffree, n_bfree;
222 if (debug && ckclean)
225 * Make best effort to get the disk name. Check first to see
226 * if it is listed among the mounted file systems. Failing that
227 * check to see if it is listed in /etc/fstab.
229 mntp = getmntpt(filesys);
231 filesys = mntp->f_mntfromname;
233 filesys = blockcheck(filesys);
235 * If -F flag specified, check to see whether a background check
236 * is possible and needed. If possible and needed, exit with
237 * status zero. Otherwise exit with status non-zero. A non-zero
238 * exit status will cause a foreground check to be run.
242 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
243 exit(3); /* Cannot read superblock */
245 if (sblock.fs_flags & FS_NEEDSFSCK)
246 exit(4); /* Earlier background failed */
247 if ((sblock.fs_flags & FS_DOSOFTDEP) == 0)
248 exit(5); /* Not running soft updates */
250 if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0)
251 exit(6); /* Lacks kernel support */
252 if ((mntp == NULL && sblock.fs_clean == 1) ||
253 (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0))
254 exit(7); /* Filesystem clean, report it now */
257 if (ckclean && skipclean) {
259 * If file system is gjournaled, check it here.
261 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
262 exit(3); /* Cannot read superblock */
264 if ((sblock.fs_flags & FS_GJOURNAL) != 0) {
265 //printf("GJournaled file system detected on %s.\n",
267 if (sblock.fs_clean == 1) {
268 pwarn("FILE SYSTEM CLEAN; SKIPPING CHECKS\n");
271 if ((sblock.fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) == 0) {
272 gjournal_check(filesys);
273 if (chkdoreload(mntp) == 0)
277 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
278 "CANNOT RUN FAST FSCK\n");
283 * If we are to do a background check:
284 * Get the mount point information of the file system
285 * create snapshot file
286 * return created snapshot file
287 * if not found, clear bkgrdflag and proceed with normal fsck
292 pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
293 } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) {
295 pfatal("NOT USING SOFT UPDATES, %s\n",
296 "CANNOT RUN IN BACKGROUND");
297 } else if ((mntp->f_flags & MNT_RDONLY) != 0) {
299 pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
300 } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) {
301 if (readsb(0) != 0) {
302 if (sblock.fs_flags & FS_NEEDSFSCK) {
304 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
305 "CANNOT RUN IN BACKGROUND\n");
307 if ((sblock.fs_flags & FS_UNCLEAN) == 0 &&
308 skipclean && ckclean) {
310 * file system is clean;
311 * skip snapshot and report it clean
313 pwarn("FILE SYSTEM CLEAN; %s\n",
321 snprintf(snapname, sizeof snapname, "%s/.snap",
323 if (stat(snapname, &snapdir) < 0) {
324 if (errno != ENOENT) {
326 pfatal("CANNOT FIND %s %s: %s, %s\n",
327 "SNAPSHOT DIRECTORY",
328 snapname, strerror(errno),
329 "CANNOT RUN IN BACKGROUND");
330 } else if ((grp = getgrnam("operator")) == 0 ||
331 mkdir(snapname, 0770) < 0 ||
332 chown(snapname, -1, grp->gr_gid) < 0 ||
333 chmod(snapname, 0770) < 0) {
335 pfatal("CANNOT CREATE %s %s: %s, %s\n",
336 "SNAPSHOT DIRECTORY",
337 snapname, strerror(errno),
338 "CANNOT RUN IN BACKGROUND");
340 } else if (!S_ISDIR(snapdir.st_mode)) {
342 pfatal("%s IS NOT A DIRECTORY, %s\n", snapname,
343 "CANNOT RUN IN BACKGROUND");
347 snprintf(snapname, sizeof snapname,
348 "%s/.snap/fsck_snapshot", mntp->f_mntonname);
349 build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
350 build_iovec(&iov, &iovlen, "from", snapname,
352 build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
354 build_iovec(&iov, &iovlen, "errmsg", errmsg,
356 build_iovec(&iov, &iovlen, "update", NULL, 0);
357 build_iovec(&iov, &iovlen, "snapshot", NULL, 0);
359 while (nmount(iov, iovlen, mntp->f_flags) < 0) {
360 if (errno == EEXIST && unlink(snapname) == 0)
363 pfatal("CANNOT CREATE SNAPSHOT %s: %s %s\n",
364 snapname, strerror(errno), errmsg);
372 switch (setup(filesys)) {
375 pfatal("CAN'T CHECK FILE SYSTEM.");
379 pwarn("clean, %ld free ", (long)(sblock.fs_cstotal.cs_nffree +
380 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree));
381 printf("(%lld frags, %lld blocks, %.1f%% fragmentation)\n",
382 (long long)sblock.fs_cstotal.cs_nffree,
383 (long long)sblock.fs_cstotal.cs_nbfree,
384 sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
389 * Cleared if any questions answered no. Used to decide if
390 * the superblock should be marked clean.
394 * 1: scan inodes tallying blocks used
397 printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
398 if (mntp != NULL && mntp->f_flags & MNT_ROOTFS)
399 printf("** Root file system\n");
400 printf("** Phase 1 - Check Blocks and Sizes\n");
405 * 1b: locate first references to duplicates, if any
408 if (preen || usedsoftdep)
409 pfatal("INTERNAL ERROR: dups with -p");
410 printf("** Phase 1b - Rescan For More DUPS\n");
415 * 2: traverse directories from root to mark all connected directories
418 printf("** Phase 2 - Check Pathnames\n");
422 * 3: scan inodes looking for disconnected directories
425 printf("** Phase 3 - Check Connectivity\n");
429 * 4: scan inodes looking for disconnected files; check reference counts
432 printf("** Phase 4 - Check Reference Counts\n");
436 * 5: check and repair resource counts in cylinder groups
439 printf("** Phase 5 - Check Cyl groups\n");
443 * print out summary statistics
445 n_ffree = sblock.fs_cstotal.cs_nffree;
446 n_bfree = sblock.fs_cstotal.cs_nbfree;
447 files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files;
449 sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
450 blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
451 blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
452 blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks;
453 if (bkgrdflag && (files > 0 || blks > 0)) {
454 countdirs = sblock.fs_cstotal.cs_ndir - countdirs;
455 pwarn("Reclaimed: %ld directories, %ld files, %lld fragments\n",
456 countdirs, (long)files - countdirs, (long long)blks);
458 pwarn("%ld files, %jd used, %ju free ",
459 (long)n_files, (intmax_t)n_blks,
460 (uintmax_t)n_ffree + sblock.fs_frag * n_bfree);
461 printf("(%ju frags, %ju blocks, %.1f%% fragmentation)\n",
462 (uintmax_t)n_ffree, (uintmax_t)n_bfree,
463 n_ffree * 100.0 / sblock.fs_dsize);
466 printf("%d inodes missing\n", -files);
468 printf("%lld blocks missing\n", -(long long)blks);
469 if (duplist != NULL) {
470 printf("The following duplicate blocks remain:");
471 for (dp = duplist; dp; dp = dp->next)
472 printf(" %lld,", (long long)dp->dup);
476 duplist = (struct dups *)0;
477 muldup = (struct dups *)0;
480 sblock.fs_time = time(NULL);
483 if (cvtlevel && sblk.b_dirty) {
485 * Write out the duplicate super blocks
487 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
488 blwrite(fswritefd, (char *)&sblock,
489 fsbtodb(&sblock, cgsblock(&sblock, cylno)),
496 * Check to see if the file system is mounted read-write.
498 if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0)
502 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
503 if (inostathead[cylno].il_stat != NULL)
504 free((char *)inostathead[cylno].il_stat);
505 free((char *)inostathead);
507 if (fsmodified && !preen)
508 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
510 printf("\n***** PLEASE RERUN FSCK *****\n");
511 if (chkdoreload(mntp) != 0) {
515 printf("\n***** REBOOT NOW *****\n");
523 chkdoreload(struct statfs *mntp)
536 * We modified a mounted file system. Do a mount update on
537 * it unless it is read-write, so we can continue using it
538 * as safely as possible.
540 if (mntp->f_flags & MNT_RDONLY) {
541 build_iovec(&iov, &iovlen, "fstype", "ffs", 4);
542 build_iovec(&iov, &iovlen, "from", mntp->f_mntfromname,
544 build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname,
546 build_iovec(&iov, &iovlen, "errmsg", errmsg,
548 build_iovec(&iov, &iovlen, "update", NULL, 0);
549 build_iovec(&iov, &iovlen, "reload", NULL, 0);
551 * XX: We need the following line until we clean up
552 * nmount parsing of root mounts and NFS root mounts.
554 build_iovec(&iov, &iovlen, "ro", NULL, 0);
555 if (nmount(iov, iovlen, mntp->f_flags) == 0) {
558 pwarn("mount reload of '%s' failed: %s %s\n\n",
559 mntp->f_mntonname, strerror(errno), errmsg);
566 * Get the mount point information for name.
568 static struct statfs *
569 getmntpt(const char *name)
571 struct stat devstat, mntdevstat;
572 char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
574 struct statfs *mntbuf, *statfsp;
575 int i, mntsize, isdev;
577 if (stat(name, &devstat) != 0)
579 if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))
583 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
584 for (i = 0; i < mntsize; i++) {
585 statfsp = &mntbuf[i];
586 ddevname = statfsp->f_mntfromname;
587 if (*ddevname != '/') {
588 strcpy(device, _PATH_DEV);
589 strcat(device, ddevname);
590 strcpy(statfsp->f_mntfromname, device);
593 if (strcmp(name, statfsp->f_mntonname))
597 if (stat(ddevname, &mntdevstat) == 0 &&
598 mntdevstat.st_rdev == devstat.st_rdev)
608 (void) fprintf(stderr,
609 "usage: %s [-BFprfny] [-b block] [-c level] [-m mode] "