1/*
2 * Copyright (c) 1980, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static const char copyright[] =
36"@(#) Copyright (c) 1980, 1986, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41#if 0
42static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95";
43#endif
44static const char rcsid[] =
|
45 "$FreeBSD: head/sbin/fsck_ffs/main.c 75557 2001-04-16 22:22:21Z mckusick $";
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| 45 "$FreeBSD: head/sbin/fsck_ffs/main.c 75927 2001-04-24 22:38:08Z mckusick $"; |
46#endif /* not lint */
47
48#include <sys/param.h>
49#include <sys/stat.h>
50#include <sys/file.h>
51#include <sys/time.h>
52#include <sys/mount.h>
53#include <sys/resource.h>
54
55#include <ufs/ufs/dinode.h>
56#include <ufs/ufs/ufsmount.h>
57#include <ufs/ffs/fs.h>
58
59#include <err.h>
60#include <errno.h>
61#include <fstab.h>
62#include <paths.h>
63
64#include "fsck.h"
65
|
66int returntosingle;
67
|
66static void usage __P((void));
67static int argtoi __P((int flag, char *req, char *str, int base));
68static int docheck __P((struct fstab *fsp));
69static int checkfilesys __P((char *filesys, char *mntpt, long auxdata,
70 int child));
71static struct statfs *getmntpt __P((const char *));
72int main __P((int argc, char *argv[]));
73
74int
75main(argc, argv)
76 int argc;
77 char *argv[];
78{
79 int ch;
80 struct rlimit rlimit;
81 int ret = 0;
82
83 sync();
84 skipclean = 1;
|
87 while ((ch = getopt(argc, argv, "b:Bc:dfm:npy")) != -1) {
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| 85 while ((ch = getopt(argc, argv, "b:Bc:dfFm:npy")) != -1) { |
86 switch (ch) {
87 case 'b':
88 skipclean = 0;
89 bflag = argtoi('b', "number", optarg, 10);
90 printf("Alternate super block location: %d\n", bflag);
91 break;
92
93 case 'B':
94 bkgrdflag = 1;
95 break;
96
97 case 'c':
98 skipclean = 0;
99 cvtlevel = argtoi('c', "conversion level", optarg, 10);
100 break;
101
102 case 'd':
103 debug++;
104 break;
105
106 case 'f':
107 skipclean = 0;
108 break;
109
|
110 case 'F':
111 bkgrdcheck = 1;
112 break;
113 |
114 case 'm':
115 lfmode = argtoi('m', "mode", optarg, 8);
116 if (lfmode &~ 07777)
117 errx(EEXIT, "bad mode to -m: %o", lfmode);
118 printf("** lost+found creation mode %o\n", lfmode);
119 break;
120
121 case 'n':
122 nflag++;
123 yflag = 0;
124 break;
125
126 case 'p':
127 preen++;
128 break;
129
130 case 'y':
131 yflag++;
132 nflag = 0;
133 break;
134
135 default:
136 usage();
137 }
138 }
139 argc -= optind;
140 argv += optind;
141
142 if (!argc)
143 usage();
144
145 if (signal(SIGINT, SIG_IGN) != SIG_IGN)
146 (void)signal(SIGINT, catch);
147 if (preen)
148 (void)signal(SIGQUIT, catchquit);
149 signal(SIGINFO, infohandler);
150 /*
151 * Push up our allowed memory limit so we can cope
152 * with huge filesystems.
153 */
154 if (getrlimit(RLIMIT_DATA, &rlimit) == 0) {
155 rlimit.rlim_cur = rlimit.rlim_max;
156 (void)setrlimit(RLIMIT_DATA, &rlimit);
157 }
158 while (argc-- > 0)
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157 (void)checkfilesys(blockcheck(*argv++), 0, 0L, 0);
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| 159 (void)checkfilesys(*argv++, 0, 0L, 0); |
160
161 if (returntosingle)
162 ret = 2;
163 exit(ret);
164}
165
166static int
167argtoi(flag, req, str, base)
168 int flag;
169 char *req, *str;
170 int base;
171{
172 char *cp;
173 int ret;
174
175 ret = (int)strtol(str, &cp, base);
176 if (cp == str || *cp)
177 errx(EEXIT, "-%c flag requires a %s", flag, req);
178 return (ret);
179}
180
181/*
182 * Check the specified filesystem.
183 */
184/* ARGSUSED */
185static int
186checkfilesys(filesys, mntpt, auxdata, child)
187 char *filesys, *mntpt;
188 long auxdata;
189 int child;
190{
191 ufs_daddr_t n_ffree, n_bfree;
192 struct ufs_args args;
193 struct dups *dp;
194 struct statfs *mntp;
195 struct zlncnt *zlnp;
196 ufs_daddr_t blks;
197 ufs_daddr_t files;
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196 int cylno;
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| 198 int cylno, size; |
199
200 if (preen && child)
201 (void)signal(SIGQUIT, voidquit);
202 cdevname = filesys;
203 if (debug && preen)
204 pwarn("starting\n");
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205 /*
206 * Make best effort to get the disk name. Check first to see
207 * if it is listed among the mounted filesystems. Failing that
208 * check to see if it is listed in /etc/fstab.
209 */
210 mntp = getmntpt(filesys);
211 if (mntp != NULL)
212 filesys = mntp->f_mntfromname;
213 else
214 filesys = blockcheck(filesys);
215 /*
216 * If -F flag specified, check to see whether a background check
217 * is possible and needed. If possible and needed, exit with
218 * status zero. Otherwise exit with status non-zero. A non-zero
219 * exit status will cause a foreground check to be run.
220 */ |
221 sblock_init();
|
204
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222 if (bkgrdcheck) {
223 if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0)
224 exit(3); /* Cannot read superblock */
225 close(fsreadfd);
226 if (sblock.fs_flags & FS_NEEDSFSCK)
227 exit(4); /* Earlier background failed */
228 if ((sblock.fs_flags & FS_DOSOFTDEP) == 0)
229 exit(5); /* Not running soft updates */
230 size = MIBSIZE;
231 if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0)
232 exit(6); /* Lacks kernel support */
233 if ((mntp == NULL && sblock.fs_clean == 1) ||
234 (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0))
235 exit(7); /* Filesystem clean, report it now */
236 exit(0);
237 } |
238 /*
239 * If we are to do a background check:
240 * Get the mount point information of the filesystem
241 * create snapshot file
242 * return created snapshot file
243 * if not found, clear bkgrdflag and proceed with normal fsck
244 */
|
212 mntp = getmntpt(filesys);
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245 if (bkgrdflag) {
246 if (mntp == NULL) {
247 bkgrdflag = 0;
248 pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
249 } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) {
250 bkgrdflag = 0;
251 pfatal("NOT USING SOFT UPDATES, %s\n",
252 "CANNOT RUN IN BACKGROUND");
253 } else if ((mntp->f_flags & MNT_RDONLY) != 0) {
254 bkgrdflag = 0;
255 pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
256 } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) {
257 if (readsb(0) != 0) {
258 if (sblock.fs_flags & FS_NEEDSFSCK) {
259 bkgrdflag = 0;
260 pfatal("UNEXPECTED INCONSISTENCY, %s\n",
261 "CANNOT RUN IN BACKGROUND\n");
262 }
263 if ((sblock.fs_flags & FS_UNCLEAN) == 0 &&
264 skipclean && preen) {
265 /*
266 * filesystem is clean;
267 * skip snapshot and report it clean
268 */
269 pwarn("FILESYSTEM CLEAN; %s\n",
270 "SKIPPING CHECKS");
271 goto clean;
272 }
273 }
274 close(fsreadfd);
275 }
276 if (bkgrdflag) {
277 snprintf(snapname, sizeof snapname, "%s/.fsck_snapshot",
278 mntp->f_mntonname);
279 args.fspec = snapname;
280 while (mount("ffs", mntp->f_mntonname,
281 mntp->f_flags | MNT_UPDATE | MNT_SNAPSHOT,
282 &args) < 0) {
283 if (errno == EEXIST && unlink(snapname) == 0)
284 continue;
285 bkgrdflag = 0;
286 pfatal("CANNOT CREATE SNAPSHOT %s: %s\n",
287 snapname, strerror(errno));
288 break;
289 }
290 if (bkgrdflag != 0)
291 filesys = snapname;
292 }
293 }
294
295 switch (setup(filesys)) {
296 case 0:
297 if (preen)
298 pfatal("CAN'T CHECK FILE SYSTEM.");
299 return (0);
300 case -1:
301 clean:
302 pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree +
303 sblock.fs_frag * sblock.fs_cstotal.cs_nbfree);
304 printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
305 sblock.fs_cstotal.cs_nffree, sblock.fs_cstotal.cs_nbfree,
306 sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize);
307 return (0);
308 }
309
310 /*
311 * Cleared if any questions answered no. Used to decide if
312 * the superblock should be marked clean.
313 */
314 resolved = 1;
315 /*
316 * 1: scan inodes tallying blocks used
317 */
318 if (preen == 0) {
319 printf("** Last Mounted on %s\n", sblock.fs_fsmnt);
320 if (mntp != NULL && mntp->f_flags & MNT_ROOTFS)
321 printf("** Root file system\n");
322 printf("** Phase 1 - Check Blocks and Sizes\n");
323 }
324 pass1();
325
326 /*
327 * 1b: locate first references to duplicates, if any
328 */
329 if (duplist) {
330 if (preen || usedsoftdep)
331 pfatal("INTERNAL ERROR: dups with -p");
332 printf("** Phase 1b - Rescan For More DUPS\n");
333 pass1b();
334 }
335
336 /*
337 * 2: traverse directories from root to mark all connected directories
338 */
339 if (preen == 0)
340 printf("** Phase 2 - Check Pathnames\n");
341 pass2();
342
343 /*
344 * 3: scan inodes looking for disconnected directories
345 */
346 if (preen == 0)
347 printf("** Phase 3 - Check Connectivity\n");
348 pass3();
349
350 /*
351 * 4: scan inodes looking for disconnected files; check reference counts
352 */
353 if (preen == 0)
354 printf("** Phase 4 - Check Reference Counts\n");
355 pass4();
356
357 /*
358 * 5: check and repair resource counts in cylinder groups
359 */
360 if (preen == 0)
361 printf("** Phase 5 - Check Cyl groups\n");
362 pass5();
363
364 /*
365 * print out summary statistics
366 */
367 n_ffree = sblock.fs_cstotal.cs_nffree;
368 n_bfree = sblock.fs_cstotal.cs_nbfree;
369 files = maxino - ROOTINO - sblock.fs_cstotal.cs_nifree - n_files;
370 blks = n_blks +
371 sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0));
372 blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0);
373 blks += howmany(sblock.fs_cssize, sblock.fs_fsize);
374 blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks;
375 if (bkgrdflag && (files > 0 || blks > 0)) {
376 countdirs = sblock.fs_cstotal.cs_ndir - countdirs;
377 pwarn("Reclaimed: %d directories, %d files, %d fragments\n",
378 countdirs, files - countdirs, blks);
379 }
380 pwarn("%ld files, %ld used, %ld free ",
381 n_files, n_blks, n_ffree + sblock.fs_frag * n_bfree);
382 printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
383 n_ffree, n_bfree, n_ffree * 100.0 / sblock.fs_dsize);
384 if (debug) {
385 if (files < 0)
386 printf("%d inodes missing\n", -files);
387 if (blks < 0)
388 printf("%d blocks missing\n", -blks);
389 if (duplist != NULL) {
390 printf("The following duplicate blocks remain:");
391 for (dp = duplist; dp; dp = dp->next)
392 printf(" %d,", dp->dup);
393 printf("\n");
394 }
395 if (zlnhead != NULL) {
396 printf("The following zero link count inodes remain:");
397 for (zlnp = zlnhead; zlnp; zlnp = zlnp->next)
398 printf(" %u,", zlnp->zlncnt);
399 printf("\n");
400 }
401 }
402 zlnhead = (struct zlncnt *)0;
403 duplist = (struct dups *)0;
404 muldup = (struct dups *)0;
405 inocleanup();
406 if (fsmodified) {
407 sblock.fs_time = time(NULL);
408 sbdirty();
409 }
410 if (cvtlevel && sblk.b_dirty) {
411 /*
412 * Write out the duplicate super blocks
413 */
414 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
415 bwrite(fswritefd, (char *)&sblock,
416 fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBSIZE);
417 }
418 if (rerun)
419 resolved = 0;
420
421 /*
422 * Check to see if the filesystem is mounted read-write.
423 */
424 if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0)
425 resolved = 0;
426 ckfini(resolved);
427
428 for (cylno = 0; cylno < sblock.fs_ncg; cylno++)
429 if (inostathead[cylno].il_stat != NULL)
430 free((char *)inostathead[cylno].il_stat);
431 free((char *)inostathead);
432 inostathead = NULL;
433 if (fsmodified && !preen)
434 printf("\n***** FILE SYSTEM WAS MODIFIED *****\n");
435 if (rerun)
436 printf("\n***** PLEASE RERUN FSCK *****\n");
437 if (mntp != NULL) {
438 struct ufs_args args;
439 int ret;
440 /*
441 * We modified a mounted filesystem. Do a mount update on
442 * it unless it is read-write, so we can continue using it
443 * as safely as possible.
444 */
445 if (mntp->f_flags & MNT_RDONLY) {
446 args.fspec = 0;
447 args.export.ex_flags = 0;
448 args.export.ex_root = 0;
449 ret = mount("ufs", mntp->f_mntonname,
450 mntp->f_flags | MNT_UPDATE | MNT_RELOAD, &args);
451 if (ret == 0)
452 return (0);
453 pwarn("mount reload of '%s' failed: %s\n\n",
454 mntp->f_mntonname, strerror(errno));
455 }
456 if (!fsmodified)
457 return (0);
458 if (!preen)
459 printf("\n***** REBOOT NOW *****\n");
460 sync();
461 return (4);
462 }
463 return (0);
464}
465
466/*
|
435 * Get the directory that the device is mounted on.
|
| 467 * Get the mount point information for name. |
468 */
469static struct statfs *
470getmntpt(name)
471 const char *name;
472{
473 struct stat devstat, mntdevstat;
474 char device[sizeof(_PATH_DEV) - 1 + MNAMELEN];
475 char *devname;
|
444 struct statfs *mntbuf;
445 int i, mntsize;
|
476 struct statfs *mntbuf, *statfsp;
477 int i, mntsize, isdev; |
478
|
447 if (stat(name, &devstat) != 0 ||
448 !(S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode)))
|
| 479 if (stat(name, &devstat) != 0) |
480 return (NULL);
|
481 if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode))
482 isdev = 1;
483 else
484 isdev = 0; |
485 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
486 for (i = 0; i < mntsize; i++) {
|
452 if (strcmp(mntbuf[i].f_fstypename, "ufs") != 0)
453 continue;
454 devname = mntbuf[i].f_mntfromname;
|
487 statfsp = &mntbuf[i];
488 devname = statfsp->f_mntfromname; |
489 if (*devname != '/') {
490 strcpy(device, _PATH_DEV);
491 strcat(device, devname);
|
458 devname = device;
|
| 492 strcpy(statfsp->f_mntfromname, device); |
493 }
|
494 if (isdev == 0) {
495 if (strcmp(name, statfsp->f_mntonname))
496 continue;
497 return (statfsp);
498 } |
499 if (stat(devname, &mntdevstat) == 0 &&
500 mntdevstat.st_rdev == devstat.st_rdev)
|
462 return (&mntbuf[i]);
|
| 501 return (statfsp); |
502 }
|
464 return (NULL);
|
503 statfsp = NULL;
504 return (statfsp); |
505}
506
507static void
508usage()
509{
510 extern char *__progname;
511
512 (void) fprintf(stderr,
513 "Usage: %s [-dfnpy] [-B be|le] [-b block] [-c level] [-m mode] "
514 "filesystem ...\n",
515 __progname);
516 exit(1);
517}
|