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>
51 #include <sys/disklabel.h>
53 #include <ufs/ufs/dinode.h>
54 #include <ufs/ufs/ufsmount.h>
55 #include <ufs/ffs/fs.h>
67 static void usage(void) __dead2;
68 static int argtoi(int flag, const char *req, const char *str, int base);
69 static int checkfilesys(char *filesys);
70 static struct statfs *getmntpt(const char *);
73 main(int argc, char *argv[])
77 struct itimerval itimerval;
82 while ((ch = getopt(argc, argv, "b:Bc:dfFm:npy")) != -1) {
86 bflag = argtoi('b', "number", optarg, 10);
87 printf("Alternate super block location: %d\n", bflag);
96 cvtlevel = argtoi('c', "conversion level", optarg, 10);
98 errx(EEXIT, "cannot do level %d conversion",
115 lfmode = argtoi('m', "mode", optarg, 8);
117 errx(EEXIT, "bad mode to -m: %o", lfmode);
118 printf("** lost+found creation mode %o\n", lfmode);
145 if (signal(SIGINT, SIG_IGN) != SIG_IGN)
146 (void)signal(SIGINT, catch);
148 (void)signal(SIGQUIT, catchquit);
149 signal(SIGINFO, infohandler);
151 signal(SIGALRM, alarmhandler);
152 itimerval.it_interval.tv_sec = 5;
153 itimerval.it_interval.tv_usec = 0;
154 itimerval.it_value.tv_sec = 5;
155 itimerval.it_value.tv_usec = 0;
156 setitimer(ITIMER_REAL, &itimerval, NULL);
159 * Push up our allowed memory limit so we can cope
160 * with huge file systems.
162 if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
163 rlimit.rlim_cur = rlimit.rlim_max;
164 (void)setrlimit(RLIMIT_DATA, &rlimit);
167 (void)checkfilesys(*argv++);
175 argtoi(int flag, const char *req, const char *str, int base)
180 ret = (int)strtol(str, &cp, base);
181 if (cp == str || *cp)
182 errx(EEXIT, "-%c flag requires a %s", flag, req);
187 * Check the specified file system.
191 checkfilesys(char *filesys)
193 ufs2_daddr_t n_ffree, n_bfree;
194 struct ufs_args args;
208 * Make best effort to get the disk name. Check first to see
209 * if it is listed among the mounted file systems. Failing that
210 * check to see if it is listed in /etc/fstab.
212 mntp = getmntpt(filesys);
214 filesys = mntp->f_mntfromname;
216 filesys = blockcheck(filesys);
218 * If -F flag specified, check to see whether a background check
219 * is possible and needed. If possible and needed, exit with
220 * status zero. Otherwise exit with status non-zero. A non-zero
221 * exit status will cause a foreground check to be run.
225 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
226 exit(3); /* Cannot read superblock */
228 if (sblock.fs_flags & FS_NEEDSFSCK)
229 exit(4); /* Earlier background failed */
230 if ((sblock.fs_flags & FS_DOSOFTDEP) == 0)
231 exit(5); /* Not running soft updates */
233 if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0)
234 exit(6); /* Lacks kernel support */
235 if ((mntp == NULL && sblock.fs_clean == 1) ||
236 (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0))
237 exit(7); /* Filesystem clean, report it now */
241 * If we are to do a background check:
242 * Get the mount point information of the file system
243 * create snapshot file
244 * return created snapshot file
245 * if not found, clear bkgrdflag and proceed with normal fsck
250 pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
251 } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) {
253 pfatal("NOT USING SOFT UPDATES, %s\n",
254 "CANNOT RUN IN BACKGROUND");
255 } else if ((mntp->f_flags & MNT_RDONLY) != 0) {
257 pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
258 } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) {
259 if (readsb(0) != 0) {
260 if (sblock.fs_flags & FS_NEEDSFSCK) {
262 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
263 "CANNOT RUN IN BACKGROUND\n");
265 if ((sblock.fs_flags & FS_UNCLEAN) == 0 &&
266 skipclean && preen) {
268 * file system is clean;
269 * skip snapshot and report it clean
271 pwarn("FILE SYSTEM CLEAN; %s\n",
279 snprintf(snapname, sizeof snapname, "%s/.snap",
281 if (stat(snapname, &snapdir) < 0) {
282 if (errno != ENOENT) {
284 pfatal("CANNOT FIND %s %s: %s, %s\n",
285 "SNAPSHOT DIRECTORY",
286 snapname, strerror(errno),
287 "CANNOT RUN IN BACKGROUND");
288 } else if ((grp = getgrnam("operator")) == 0 ||
289 mkdir(snapname, 0770) < 0 ||
290 chown(snapname, -1, grp->gr_gid) < 0 ||
291 chmod(snapname, 0770) < 0) {
293 pfatal("CANNOT CREATE %s %s: %s, %s\n",
294 "SNAPSHOT DIRECTORY",
295 snapname, strerror(errno),
296 "CANNOT RUN IN BACKGROUND");
298 } else if (!S_ISDIR(snapdir.st_mode)) {
300 pfatal("%s IS NOT A DIRECTORY, %s\n", snapname,
301 "CANNOT RUN IN BACKGROUND");
305 snprintf(snapname, sizeof snapname,
306 "%s/.snap/fsck_snapshot", mntp->f_mntonname);
307 memset(&args, 0, sizeof args);
308 args.fspec = snapname;
309 while (mount("ffs", mntp->f_mntonname,
310 mntp->f_flags | MNT_UPDATE | MNT_SNAPSHOT,
312 if (errno == EEXIST && unlink(snapname) == 0)
315 pfatal("CANNOT CREATE SNAPSHOT %s: %s\n",
316 snapname, strerror(errno));
324 switch (setup(filesys)) {
327 pfatal("CAN'T CHECK FILE SYSTEM.");
331 pwarn("clean, %ld free ", (long)(sblock.fs_cstotal.cs_nffree +
332 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree));
333 printf("(%lld frags, %lld blocks, %.1f%% fragmentation)\n",
334 (long long)sblock.fs_cstotal.cs_nffree,
335 (long long)sblock.fs_cstotal.cs_nbfree,
336 sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
341 * Cleared if any questions answered no. Used to decide if
342 * the superblock should be marked clean.
346 * 1: scan inodes tallying blocks used
349 printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
350 if (mntp != NULL && mntp->f_flags & MNT_ROOTFS)
351 printf("** Root file system\n");
352 printf("** Phase 1 - Check Blocks and Sizes\n");
357 * 1b: locate first references to duplicates, if any
360 if (preen || usedsoftdep)
361 pfatal("INTERNAL ERROR: dups with -p");
362 printf("** Phase 1b - Rescan For More DUPS\n");
367 * 2: traverse directories from root to mark all connected directories
370 printf("** Phase 2 - Check Pathnames\n");
374 * 3: scan inodes looking for disconnected directories
377 printf("** Phase 3 - Check Connectivity\n");
381 * 4: scan inodes looking for disconnected files; check reference counts
384 printf("** Phase 4 - Check Reference Counts\n");
388 * 5: check and repair resource counts in cylinder groups
391 printf("** Phase 5 - Check Cyl groups\n");
395 * print out summary statistics
397 n_ffree = sblock.fs_cstotal.cs_nffree;
398 n_bfree = sblock.fs_cstotal.cs_nbfree;
399 files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files;
401 sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
402 blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
403 blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
404 blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks;
405 if (bkgrdflag && (files > 0 || blks > 0)) {
406 countdirs = sblock.fs_cstotal.cs_ndir - countdirs;
407 pwarn("Reclaimed: %ld directories, %ld files, %lld fragments\n",
408 countdirs, (long)files - countdirs, (long long)blks);
410 pwarn("%ld files, %jd used, %ju free ",
411 (long)n_files, (intmax_t)n_blks,
412 (uintmax_t)n_ffree + sblock.fs_frag * n_bfree);
413 printf("(%ju frags, %ju blocks, %.1f%% fragmentation)\n",
414 (uintmax_t)n_ffree, (uintmax_t)n_bfree,
415 n_ffree * 100.0 / sblock.fs_dsize);
418 printf("%d inodes missing\n", -files);
420 printf("%lld blocks missing\n", -(long long)blks);
421 if (duplist != NULL) {
422 printf("The following duplicate blocks remain:");
423 for (dp = duplist; dp; dp = dp->next)
424 printf(" %lld,", (long long)dp->dup);
428 duplist = (struct dups *)0;
429 muldup = (struct dups *)0;
432 sblock.fs_time = time(NULL);
435 if (cvtlevel && sblk.b_dirty) {
437 * Write out the duplicate super blocks
439 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
440 bwrite(fswritefd, (char *)&sblock,
441 fsbtodb(&sblock, cgsblock(&sblock, cylno)),
448 * Check to see if the file system is mounted read-write.
450 if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0)
454 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
455 if (inostathead[cylno].il_stat != NULL)
456 free((char *)inostathead[cylno].il_stat);
457 free((char *)inostathead);
459 if (fsmodified && !preen)
460 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
462 printf("\n***** PLEASE RERUN FSCK *****\n");
465 * We modified a mounted file system. Do a mount update on
466 * it unless it is read-write, so we can continue using it
467 * as safely as possible.
469 if (mntp->f_flags & MNT_RDONLY) {
471 args.export.ex_flags = 0;
472 args.export.ex_root = 0;
473 ret = mount("ufs", mntp->f_mntonname,
474 mntp->f_flags | MNT_UPDATE | MNT_RELOAD, &args);
477 pwarn("mount reload of '%s' failed: %s\n\n",
478 mntp->f_mntonname, strerror(errno));
483 printf("\n***** REBOOT NOW *****\n");
491 * Get the mount point information for name.
493 static struct statfs *
494 getmntpt(const char *name)
496 struct stat devstat, mntdevstat;
497 char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
499 struct statfs *mntbuf, *statfsp;
500 int i, mntsize, isdev;
502 if (stat(name, &devstat) != 0)
504 if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))
508 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
509 for (i = 0; i < mntsize; i++) {
510 statfsp = &mntbuf[i];
511 ddevname = statfsp->f_mntfromname;
512 if (*ddevname != '/') {
513 strcpy(device, _PATH_DEV);
514 strcat(device, ddevname);
515 strcpy(statfsp->f_mntfromname, device);
518 if (strcmp(name, statfsp->f_mntonname))
522 if (stat(ddevname, &mntdevstat) == 0 &&
523 mntdevstat.st_rdev == devstat.st_rdev)
533 (void) fprintf(stderr,
534 "usage: %s [-BFpfny] [-b block] [-c level] [-m mode] "