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
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13 * 3. 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
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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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
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29 * @(#) Copyright (c) 1980, 1986, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)main.c 8.6 (Berkeley) 5/14/95
31 * $FreeBSD: src/sbin/fsck/main.c,v 1.21.2.1 2001/01/23 23:11:07 iedowse Exp $
34 #include <sys/param.h>
37 #include <sys/mount.h>
38 #include <sys/resource.h>
40 #include <vfs/ufs/dinode.h>
41 #include <vfs/ufs/ufsmount.h>
42 #include <vfs/ufs/fs.h>
52 int returntosingle; /* 1 => return to single user mode on exit */
53 int lastmntonly; /* Output the last mounted on only */
55 static int argtoi(int flag, char *req, char *str, int base);
56 static int docheck(struct fstab *fsp);
57 static int checkfilesys(char *filesys, char *mntpt, long auxdata,
59 static struct statfs *getmntpt(const char *);
62 main(int argc, char **argv)
69 while ((ch = getopt(argc, argv, "dfLpnNyYb:c:l:m:")) != -1) {
76 bflag = argtoi('b', "number", optarg, 10);
77 printf("Alternate super block location: %d\n", bflag);
81 cvtlevel = argtoi('c', "conversion level", optarg, 10);
93 maxrun = argtoi('l', "number", optarg, 10);
101 lfmode = argtoi('m', "mode", optarg, 8);
103 errx(EEXIT, "bad mode to -m: %o", lfmode);
104 printf("** lost+found creation mode %o\n", lfmode);
120 errx(EEXIT, "%c option?", ch);
125 if (signal(SIGINT, SIG_IGN) != SIG_IGN)
126 signal(SIGINT, catch);
128 signal(SIGQUIT, catchquit);
129 signal(SIGINFO, infohandler);
131 * Push up our allowed memory limit so we can cope
132 * with huge filesystems.
134 if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
135 rlimit.rlim_cur = rlimit.rlim_max;
136 setrlimit(RLIMIT_DATA, &rlimit);
140 char *path = blockcheck(*argv);
143 pfatal("Can't check %s\n", *argv);
145 checkfilesys(path, 0, 0L, 0);
150 ret = checkfstab(preen, maxrun, docheck, checkfilesys);
157 argtoi(int flag, char *req, char *str, int base)
162 ret = (int)strtol(str, &cp, base);
163 if (cp == str || *cp)
164 errx(EEXIT, "-%c flag requires a %s", flag, req);
169 * Determine whether a filesystem should be checked.
172 docheck(struct fstab *fsp)
175 if (strcmp(fsp->fs_vfstype, "ufs") ||
176 (strcmp(fsp->fs_type, FSTAB_RW) &&
177 strcmp(fsp->fs_type, FSTAB_RO)) ||
184 * Check the specified filesystem.
188 checkfilesys(char *filesys, char *mntpt, long auxdata, int child)
190 ufs_daddr_t n_ffree, n_bfree;
192 struct statfs *mntbuf;
197 signal(SIGQUIT, voidquit);
201 switch (setup(filesys)) {
204 pfatal("CAN'T CHECK FILE SYSTEM.");
207 pwarn("clean, %d free ", sblock.fs_cstotal.cs_nffree +
208 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree);
209 printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
210 sblock.fs_cstotal.cs_nffree, sblock.fs_cstotal.cs_nbfree,
211 sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
217 * Get the mount point information of the filesystem, if
220 mntbuf = getmntpt(filesys);
223 * Cleared if any questions answered no. Used to decide if
224 * the superblock should be marked clean.
228 * 1: scan inodes tallying blocks used
231 printf("** %s Last Mounted on %s\n", filesys, sblock.fs_fsmnt);
235 printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
236 if (mntbuf != NULL && mntbuf->f_flags & MNT_ROOTFS)
237 printf("** Root file system\n");
238 printf("** Phase 1 - Check Blocks and Sizes\n");
243 * 1b: locate first references to duplicates, if any
246 if (preen || usedsoftdep)
247 pfatal("INTERNAL ERROR: dups with -p");
248 printf("** Phase 1b - Rescan For More DUPS\n");
253 * 2: traverse directories from root to mark all connected directories
256 printf("** Phase 2 - Check Pathnames\n");
260 * 3: scan inodes looking for disconnected directories
263 printf("** Phase 3 - Check Connectivity\n");
267 * 4: scan inodes looking for disconnected files; check reference counts
270 printf("** Phase 4 - Check Reference Counts\n");
274 * 5: check and repair resource counts in cylinder groups
277 printf("** Phase 5 - Check Cyl groups\n");
281 * print out summary statistics
283 n_ffree = sblock.fs_cstotal.cs_nffree;
284 n_bfree = sblock.fs_cstotal.cs_nbfree;
285 pwarn("%d files, %d used, %d free ",
286 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
287 printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
288 n_ffree, n_bfree, n_ffree * 100.0 / sblock.fs_dsize);
290 (n_files -= maxino - UFS_ROOTINO - sblock.fs_cstotal.cs_nifree))
291 printf("%d files missing\n", n_files);
293 n_blks += sblock.fs_ncg *
294 (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
295 n_blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
296 n_blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
297 if (n_blks -= maxfsblock - (n_ffree + sblock.fs_frag * n_bfree))
298 printf("%d blocks missing\n", n_blks);
299 if (duplist != NULL) {
300 printf("The following duplicate blocks remain:");
301 for (dp = duplist; dp; dp = dp->next)
302 printf(" %d,", dp->dup);
305 if (zlnhead != NULL) {
306 printf("The following zero link count inodes remain:");
307 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
308 printf(" %u,", zlnp->zlncnt);
317 sblock.fs_time = time(NULL);
320 if (cvtlevel && sblk.b_dirty) {
322 * Write out the duplicate super blocks
324 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
325 bwrite(fswritefd, (char *)&sblock,
326 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
332 * Check to see if the filesystem is mounted read-write.
334 if (mntbuf != NULL && (mntbuf->f_flags & MNT_RDONLY) == 0)
338 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
339 if (inostathead[cylno].il_stat != NULL)
340 free((char *)inostathead[cylno].il_stat);
341 free((char *)inostathead);
343 if (fsmodified && !preen)
344 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
346 printf("\n***** PLEASE RERUN FSCK *****\n");
347 if (mntbuf != NULL) {
348 struct ufs_args args;
351 * We modified a mounted filesystem. Do a mount update on
352 * it unless it is read-write, so we can continue using it
353 * as safely as possible.
355 if (mntbuf->f_flags & MNT_RDONLY) {
357 args.export.ex_flags = 0;
358 args.export.ex_root = 0;
359 ret = mount("ufs", mntbuf->f_mntonname,
360 mntbuf->f_flags | MNT_UPDATE | MNT_RELOAD, &args);
363 pwarn("mount reload of '%s' failed: %s\n\n",
364 mntbuf->f_mntonname, strerror(errno));
369 printf("\n***** REBOOT NOW *****\n");
377 * Get the directory that the device is mounted on.
379 static struct statfs *
380 getmntpt(const char *name)
382 struct stat devstat, mntdevstat;
383 char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
385 struct statfs *mntbuf;
388 if (stat(name, &devstat) != 0 ||
389 !(S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode)))
391 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
392 for (i = 0; i < mntsize; i++) {
393 if (strcmp(mntbuf[i].f_fstypename, "ufs") != 0)
395 devname = mntbuf[i].f_mntfromname;
396 if (*devname != '/') {
397 strcpy(device, _PATH_DEV);
398 strcat(device, devname);
401 if (stat(devname, &mntdevstat) == 0 &&
402 mntdevstat.st_rdev == devstat.st_rdev)