1 /* $NetBSD: setup.c,v 1.109 2023/07/05 10:59:08 riastradh Exp $ */
2
3 /*
4 * Copyright (c) 1980, 1986, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)setup.c 8.10 (Berkeley) 5/9/95";
36 #else
37 __RCSID("$NetBSD: setup.c,v 1.109 2023/07/05 10:59:08 riastradh Exp $");
38 #endif
39 #endif /* not lint */
40
41 #include <sys/param.h>
42 #include <sys/time.h>
43 #include <sys/stat.h>
44 #include <sys/ioctl.h>
45 #include <sys/file.h>
46 #include <sys/disk.h>
47
48 #include <ufs/ufs/dinode.h>
49 #include <ufs/ufs/dir.h>
50 #include <ufs/ufs/ufs_bswap.h>
51 #include <ufs/ufs/quota2.h>
52 #include <ufs/ffs/fs.h>
53 #include <ufs/ffs/ffs_extern.h>
54
55 #include <ctype.h>
56 #include <err.h>
57 #include <errno.h>
58 #include <stdio.h>
59 #include <stdlib.h>
60 #include <string.h>
61
62 #include "fsck.h"
63 #include "extern.h"
64 #include "fsutil.h"
65 #include "partutil.h"
66 #include "exitvalues.h"
67
68 #define POWEROF2(num) (((num) & ((num) - 1)) == 0)
69
70 static void badsb(int, const char *);
71 static int calcsb(const char *, int, struct fs *);
72 static int readsb(int);
73 #ifndef NO_APPLE_UFS
74 static int readappleufs(void);
75 #endif
76 static int check_snapinum(void);
77
78 int16_t sblkpostbl[256];
79
80 /*
81 * Read in a superblock finding an alternate if necessary.
82 * Return 1 if successful, 0 if unsuccessful, -1 if filesystem
83 * is already clean (preen mode only).
84 */
85 int
setup(const char * dev,const char * origdev)86 setup(const char *dev, const char *origdev)
87 {
88 uint32_t cg;
89 long size, asked, i, j;
90 long bmapsize;
91 struct disk_geom geo;
92 struct dkwedge_info dkw;
93 off_t sizepb;
94 struct stat statb;
95 struct fs proto;
96 int doskipclean;
97 u_int64_t maxfilesize;
98 struct csum *ccsp;
99 int fd;
100
101 havesb = 0;
102 fswritefd = -1;
103 doskipclean = skipclean;
104 if (stat(dev, &statb) < 0) {
105 printf("Can't stat %s: %s\n", dev, strerror(errno));
106 return (0);
107 }
108 if (!forceimage && !S_ISCHR(statb.st_mode)) {
109 pfatal("%s is not a character device", dev);
110 if (reply("CONTINUE") == 0)
111 return (0);
112 }
113 if ((fsreadfd = open(dev, O_RDONLY)) < 0) {
114 printf("Can't open %s: %s\n", dev, strerror(errno));
115 return (0);
116 }
117 if (nflag || (fswritefd = open(dev, O_WRONLY)) < 0) {
118 fswritefd = -1;
119 if (preen)
120 pfatal("NO WRITE ACCESS");
121 printf("** %s (NO WRITE)\n", dev);
122 quiet = 0;
123 } else
124 if (!preen && !quiet)
125 printf("** %s\n", dev);
126 fsmodified = 0;
127 lfdir = 0;
128 initbarea(&sblk);
129 initbarea(&asblk);
130 sblk.b_un.b_buf = aligned_alloc(DEV_BSIZE, SBLOCKSIZE);
131 sblock = aligned_alloc(DEV_BSIZE, SBLOCKSIZE);
132 asblk.b_un.b_buf = aligned_alloc(DEV_BSIZE, SBLOCKSIZE);
133 altsblock = aligned_alloc(DEV_BSIZE, SBLOCKSIZE);
134 if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL ||
135 sblock == NULL || altsblock == NULL)
136 errexit("Cannot allocate space for superblock");
137 if (strcmp(dev, origdev) && !forceimage) {
138 /*
139 * dev isn't the original fs (for example it's a snapshot)
140 * do getdiskinfo on the original device
141 */
142 fd = open(origdev, O_RDONLY);
143 if (fd < 0) {
144 warn("Can't open %s", origdev);
145 return (0);
146 }
147 } else {
148 fd = fsreadfd;
149 }
150 if (!forceimage && getdiskinfo(origdev, fd, NULL, &geo, &dkw) != -1)
151 dev_bsize = secsize = geo.dg_secsize;
152 else
153 dev_bsize = secsize = DEV_BSIZE;
154 /*
155 * Read in the superblock, looking for alternates if necessary
156 */
157 if (readsb(1) == 0) {
158 if (bflag || preen || forceimage ||
159 calcsb(dev, fsreadfd, &proto) == 0)
160 return(0);
161 if (reply("LOOK FOR ALTERNATE SUPERBLOCKS") == 0)
162 return (0);
163 for (cg = 0; cg < proto.fs_ncg; cg++) {
164 bflag = FFS_FSBTODB(&proto, cgsblock(&proto, cg));
165 if (readsb(0) != 0)
166 break;
167 }
168 if (cg >= proto.fs_ncg) {
169 printf("%s %s\n%s %s\n%s %s\n",
170 "SEARCH FOR ALTERNATE SUPER-BLOCK",
171 "FAILED. YOU MUST USE THE",
172 "-b OPTION TO fsck_ffs TO SPECIFY THE",
173 "LOCATION OF AN ALTERNATE",
174 "SUPER-BLOCK TO SUPPLY NEEDED",
175 "INFORMATION; SEE fsck_ffs(8).");
176 return(0);
177 }
178 doskipclean = 0;
179 pwarn("USING ALTERNATE SUPERBLOCK AT %d\n", bflag);
180 }
181
182 if (!quota2_check_doquota())
183 doskipclean = 0;
184
185 /* ffs_superblock_layout() == 2 */
186 if (sblock->fs_magic != FS_UFS1_MAGIC ||
187 (sblock->fs_old_flags & FS_FLAGS_UPDATED) != 0) {
188 /* can have WAPBL */
189 if (check_wapbl() != 0) {
190 doskipclean = 0;
191 }
192 if (sblock->fs_flags & FS_DOWAPBL) {
193 if (preen && doskipclean) {
194 if (!quiet)
195 pwarn("file system is journaled; "
196 "not checking\n");
197 return (-1);
198 }
199 if (!quiet)
200 pwarn("** File system is journaled; "
201 "replaying journal\n");
202 replay_wapbl();
203 doskipclean = 0;
204 sblock->fs_flags &= ~FS_DOWAPBL;
205 sbdirty();
206 /* Although we may have updated the superblock from
207 * the journal, we are still going to do a full check,
208 * so we don't bother to re-read the superblock from
209 * the journal.
210 * XXX, instead we could re-read the superblock and
211 * then not force doskipclean = 0
212 */
213 }
214 }
215 if (debug)
216 printf("clean = %d\n", sblock->fs_clean);
217
218 if (doswap)
219 doskipclean = 0;
220
221 if (sblock->fs_clean & FS_ISCLEAN) {
222 if (doskipclean) {
223 if (!quiet)
224 pwarn("%sile system is clean; not checking\n",
225 preen ? "f" : "** F");
226 return (-1);
227 }
228 if (!preen && !doswap)
229 pwarn("** File system is already clean\n");
230 }
231 maxfsblock = sblock->fs_size;
232 maxino = sblock->fs_ncg * sblock->fs_ipg;
233 sizepb = sblock->fs_bsize;
234 maxfilesize = sblock->fs_bsize * UFS_NDADDR - 1;
235 for (i = 0; i < UFS_NIADDR; i++) {
236 sizepb *= FFS_NINDIR(sblock);
237 maxfilesize += sizepb;
238 }
239 if ((!is_ufs2 && cvtlevel >= 4) &&
240 (sblock->fs_old_flags & FS_FLAGS_UPDATED) == 0) {
241 if (preen)
242 pwarn("CONVERTING TO NEW SUPERBLOCK LAYOUT\n");
243 else if (!reply("CONVERT TO NEW SUPERBLOCK LAYOUT"))
244 return(0);
245 sblock->fs_old_flags |= FS_FLAGS_UPDATED;
246 /* Disable the postbl tables */
247 sblock->fs_old_cpc = 0;
248 sblock->fs_old_nrpos = 1;
249 sblock->fs_old_trackskew = 0;
250 /* The other fields have already been updated by
251 * sb_oldfscompat_read
252 */
253 sbdirty();
254 }
255 if (!is_ufs2 && cvtlevel == 3 &&
256 (sblock->fs_old_flags & FS_FLAGS_UPDATED)) {
257 if (preen)
258 pwarn("DOWNGRADING TO OLD SUPERBLOCK LAYOUT\n");
259 else if (!reply("DOWNGRADE TO OLD SUPERBLOCK LAYOUT"))
260 return(0);
261 sblock->fs_old_flags &= ~FS_FLAGS_UPDATED;
262 sb_oldfscompat_write(sblock, sblock);
263 sblock->fs_old_flags &= ~FS_FLAGS_UPDATED; /* just in case */
264 /* Leave postbl tables disabled, but blank its superblock region anyway */
265 sblock->fs_old_postblformat = FS_DYNAMICPOSTBLFMT;
266 sblock->fs_old_cpc = 0;
267 sblock->fs_old_nrpos = 1;
268 sblock->fs_old_trackskew = 0;
269 memset(&sblock->fs_old_postbl_start, 0xff, 256);
270 sb_oldfscompat_read(sblock, &sblocksave);
271 sbdirty();
272 }
273 /*
274 * Check and potentially fix certain fields in the super block.
275 */
276 if (sblock->fs_flags & ~(FS_KNOWN_FLAGS)) {
277 pfatal("UNKNOWN FLAGS=0x%08x IN SUPERBLOCK", sblock->fs_flags);
278 if (reply("CLEAR") == 1) {
279 sblock->fs_flags &= FS_KNOWN_FLAGS;
280 sbdirty();
281 }
282 }
283 if (sblock->fs_optim != FS_OPTTIME && sblock->fs_optim != FS_OPTSPACE) {
284 pfatal("UNDEFINED OPTIMIZATION IN SUPERBLOCK");
285 if (reply("SET TO DEFAULT") == 1) {
286 sblock->fs_optim = FS_OPTTIME;
287 sbdirty();
288 }
289 }
290 if ((sblock->fs_minfree < 0 || sblock->fs_minfree > 99)) {
291 pfatal("IMPOSSIBLE MINFREE=%d IN SUPERBLOCK",
292 sblock->fs_minfree);
293 if (reply("SET TO DEFAULT") == 1) {
294 sblock->fs_minfree = 10;
295 sbdirty();
296 }
297 }
298 if (!is_ufs2 && sblock->fs_old_postblformat != FS_42POSTBLFMT &&
299 (sblock->fs_old_interleave < 1 ||
300 sblock->fs_old_interleave > sblock->fs_old_nsect)) {
301 pwarn("IMPOSSIBLE INTERLEAVE=%d IN SUPERBLOCK",
302 sblock->fs_old_interleave);
303 sblock->fs_old_interleave = 1;
304 if (preen)
305 printf(" (FIXED)\n");
306 if (preen || reply("SET TO DEFAULT") == 1) {
307 sbdirty();
308 dirty(&asblk);
309 }
310 }
311 if (!is_ufs2 && sblock->fs_old_postblformat != FS_42POSTBLFMT &&
312 (sblock->fs_old_npsect < sblock->fs_old_nsect ||
313 sblock->fs_old_npsect > sblock->fs_old_nsect*2)) {
314 pwarn("IMPOSSIBLE NPSECT=%d IN SUPERBLOCK",
315 sblock->fs_old_npsect);
316 sblock->fs_old_npsect = sblock->fs_old_nsect;
317 if (preen)
318 printf(" (FIXED)\n");
319 if (preen || reply("SET TO DEFAULT") == 1) {
320 sbdirty();
321 dirty(&asblk);
322 }
323 }
324 if (sblock->fs_bmask != ~(sblock->fs_bsize - 1)) {
325 pwarn("INCORRECT BMASK=0x%x IN SUPERBLOCK",
326 sblock->fs_bmask);
327 sblock->fs_bmask = ~(sblock->fs_bsize - 1);
328 if (preen)
329 printf(" (FIXED)\n");
330 if (preen || reply("FIX") == 1) {
331 sbdirty();
332 dirty(&asblk);
333 }
334 }
335 if (sblock->fs_fmask != ~(sblock->fs_fsize - 1)) {
336 pwarn("INCORRECT FMASK=0x%x IN SUPERBLOCK",
337 sblock->fs_fmask);
338 sblock->fs_fmask = ~(sblock->fs_fsize - 1);
339 if (preen)
340 printf(" (FIXED)\n");
341 if (preen || reply("FIX") == 1) {
342 sbdirty();
343 dirty(&asblk);
344 }
345 }
346 if (check_snapinum()) {
347 if (preen)
348 printf(" (FIXED)\n");
349 if (preen || reply("FIX") == 1) {
350 sbdirty();
351 dirty(&asblk);
352 }
353 }
354 if (is_ufs2 || sblock->fs_old_inodefmt >= FS_44INODEFMT) {
355 if (sblock->fs_maxfilesize != maxfilesize) {
356 pwarn("INCORRECT MAXFILESIZE=%lld IN SUPERBLOCK",
357 (unsigned long long)sblock->fs_maxfilesize);
358 sblock->fs_maxfilesize = maxfilesize;
359 if (preen)
360 printf(" (FIXED)\n");
361 if (preen || reply("FIX") == 1) {
362 sbdirty();
363 dirty(&asblk);
364 }
365 }
366 if ((is_ufs2 && sblock->fs_maxsymlinklen != UFS2_MAXSYMLINKLEN)
367 ||
368 (!is_ufs2 && sblock->fs_maxsymlinklen != UFS1_MAXSYMLINKLEN))
369 {
370 pwarn("INCORRECT MAXSYMLINKLEN=%d IN SUPERBLOCK",
371 sblock->fs_maxsymlinklen);
372 sblock->fs_maxsymlinklen = is_ufs2 ?
373 UFS2_MAXSYMLINKLEN : UFS1_MAXSYMLINKLEN;
374 if (preen)
375 printf(" (FIXED)\n");
376 if (preen || reply("FIX") == 1) {
377 sbdirty();
378 dirty(&asblk);
379 }
380 }
381 if (sblock->fs_qbmask != ~sblock->fs_bmask) {
382 pwarn("INCORRECT QBMASK=%#llx IN SUPERBLOCK",
383 (unsigned long long)sblock->fs_qbmask);
384 sblock->fs_qbmask = ~sblock->fs_bmask;
385 if (preen)
386 printf(" (FIXED)\n");
387 if (preen || reply("FIX") == 1) {
388 sbdirty();
389 dirty(&asblk);
390 }
391 }
392 if (sblock->fs_qfmask != ~sblock->fs_fmask) {
393 pwarn("INCORRECT QFMASK=%#llx IN SUPERBLOCK",
394 (unsigned long long)sblock->fs_qfmask);
395 sblock->fs_qfmask = ~sblock->fs_fmask;
396 if (preen)
397 printf(" (FIXED)\n");
398 if (preen || reply("FIX") == 1) {
399 sbdirty();
400 dirty(&asblk);
401 }
402 }
403 newinofmt = 1;
404 } else {
405 sblock->fs_qbmask = ~sblock->fs_bmask;
406 sblock->fs_qfmask = ~sblock->fs_fmask;
407 newinofmt = 0;
408 }
409 /*
410 * Convert to new inode format.
411 */
412 if (!is_ufs2 && cvtlevel >= 2 &&
413 sblock->fs_old_inodefmt < FS_44INODEFMT) {
414 if (preen)
415 pwarn("CONVERTING TO NEW INODE FORMAT\n");
416 else if (!reply("CONVERT TO NEW INODE FORMAT"))
417 return(0);
418 doinglevel2++;
419 sblock->fs_old_inodefmt = FS_44INODEFMT;
420 sblock->fs_maxfilesize = maxfilesize;
421 sblock->fs_maxsymlinklen = UFS1_MAXSYMLINKLEN;
422 sblock->fs_qbmask = ~sblock->fs_bmask;
423 sblock->fs_qfmask = ~sblock->fs_fmask;
424 sbdirty();
425 dirty(&asblk);
426 }
427 /*
428 * Convert to new cylinder group format.
429 */
430 if (!is_ufs2 && cvtlevel >= 1 &&
431 sblock->fs_old_postblformat == FS_42POSTBLFMT) {
432 if (preen)
433 pwarn("CONVERTING TO NEW CYLINDER GROUP FORMAT\n");
434 else if (!reply("CONVERT TO NEW CYLINDER GROUP FORMAT"))
435 return(0);
436 doinglevel1++;
437 sblock->fs_old_postblformat = FS_DYNAMICPOSTBLFMT;
438 sblock->fs_old_nrpos = 8;
439 sblock->fs_old_postbloff =
440 (char *)(&sblock->fs_old_postbl_start) -
441 (char *)(&sblock->fs_firstfield);
442 sblock->fs_old_rotbloff =
443 (char *)(&sblock->fs_magic+1) -
444 (char *)(&sblock->fs_firstfield);
445 sblock->fs_cgsize =
446 ffs_fragroundup(sblock, CGSIZE(sblock));
447 sbdirty();
448 dirty(&asblk);
449 }
450 if (asblk.b_dirty && !bflag) {
451 memmove(sblk.b_un.b_fs, sblock, SBLOCKSIZE);
452 sb_oldfscompat_write(sblk.b_un.b_fs, sblocksave);
453 if (needswap)
454 ffs_sb_swap(sblk.b_un.b_fs, sblk.b_un.b_fs);
455 memmove(asblk.b_un.b_fs, sblk.b_un.b_fs, (size_t)sblock->fs_sbsize);
456 flush(fswritefd, &asblk);
457 }
458 /*
459 * read in the summary info.
460 */
461 asked = 0;
462 sblock->fs_csp = (struct csum *)aligned_alloc(DEV_BSIZE,
463 sblock->fs_cssize);
464 if (sblock->fs_csp == NULL) {
465 pwarn("cannot alloc %u bytes for summary info\n",
466 sblock->fs_cssize);
467 goto badsblabel;
468 }
469 memset(sblock->fs_csp, 0, sblock->fs_cssize);
470 for (i = 0, j = 0; i < sblock->fs_cssize; i += sblock->fs_bsize, j++) {
471 size = sblock->fs_cssize - i < sblock->fs_bsize ?
472 sblock->fs_cssize - i : sblock->fs_bsize;
473 ccsp = (struct csum *)((char *)sblock->fs_csp + i);
474 if (bread(fsreadfd, (char *)ccsp,
475 FFS_FSBTODB(sblock, sblock->fs_csaddr + j * sblock->fs_frag),
476 size) != 0 && !asked) {
477 pfatal("BAD SUMMARY INFORMATION");
478 if (reply("CONTINUE") == 0) {
479 markclean = 0;
480 exit(FSCK_EXIT_CHECK_FAILED);
481 }
482 asked++;
483 }
484 if (doswap) {
485 ffs_csum_swap(ccsp, ccsp, size);
486 bwrite(fswritefd, (char *)ccsp,
487 FFS_FSBTODB(sblock,
488 sblock->fs_csaddr + j * sblock->fs_frag),
489 size);
490 }
491 if (needswap)
492 ffs_csum_swap(ccsp, ccsp, size);
493 }
494 /*
495 * allocate and initialize the necessary maps
496 */
497 bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(int16_t));
498 blockmap = aligned_alloc(DEV_BSIZE, (unsigned)bmapsize);
499 if (blockmap == NULL) {
500 pwarn("cannot alloc %u bytes for blockmap\n",
501 (unsigned)bmapsize);
502 goto badsblabel;
503 }
504 memset(blockmap, 0, bmapsize);
505 inostathead = calloc((unsigned)(sblock->fs_ncg),
506 sizeof(struct inostatlist));
507 if (inostathead == NULL) {
508 pwarn("cannot alloc %u bytes for inostathead\n",
509 (unsigned)(sizeof(struct inostatlist) * (sblock->fs_ncg)));
510 goto badsblabel;
511 }
512 /*
513 * cs_ndir may be inaccurate, particularly if we're using the -b
514 * option, so set a minimum to prevent bogus subdirectory reconnects
515 * and really inefficient directory scans.
516 * Also set a maximum in case the value is too large.
517 */
518 numdirs = sblock->fs_cstotal.cs_ndir;
519 if (numdirs < 1024)
520 numdirs = 1024;
521 if ((ino_t)numdirs > maxino + 1)
522 numdirs = maxino + 1;
523 dirhash = numdirs;
524 inplast = 0;
525 listmax = numdirs + 10;
526 inpsort = calloc((unsigned)listmax, sizeof(*inpsort));
527 inphead = calloc((unsigned)numdirs, sizeof(*inphead));
528 if (inpsort == NULL || inphead == NULL) {
529 pwarn("cannot alloc %u bytes for inphead\n",
530 (unsigned)(numdirs * sizeof(struct inoinfo *)));
531 goto badsblabel;
532 }
533 cgrp = aligned_alloc(DEV_BSIZE, sblock->fs_cgsize);
534 if (cgrp == NULL) {
535 pwarn("cannot alloc %u bytes for cylinder group\n",
536 sblock->fs_cgsize);
537 goto badsblabel;
538 }
539 bufinit();
540 if (sblock->fs_flags & FS_DOSOFTDEP)
541 usedsoftdep = 1;
542 else
543 usedsoftdep = 0;
544
545 #ifndef NO_APPLE_UFS
546 if (!forceimage && dkw.dkw_parent[0])
547 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0)
548 isappleufs = 1;
549
550 if (readappleufs())
551 isappleufs = 1;
552 #endif
553
554 if (isappleufs)
555 dirblksiz = APPLEUFS_DIRBLKSIZ;
556 else
557 dirblksiz = UFS_DIRBLKSIZ;
558
559 if (debug)
560 #ifndef NO_APPLE_UFS
561 printf("isappleufs = %d, dirblksiz = %d\n", isappleufs, dirblksiz);
562 #else
563 printf("dirblksiz = %d\n", dirblksiz);
564 #endif
565
566 if (sblock->fs_flags & FS_DOQUOTA2) {
567 /* allocate the quota hash table */
568 /*
569 * first compute the size of the hash table
570 * We know the smallest block size is 4k, so we can use 2k
571 * for the hash table; as an entry is 8 bytes we can store
572 * 256 entries. So let start q2h_hash_shift at 8
573 */
574 for (q2h_hash_shift = 8;
575 q2h_hash_shift < 15;
576 q2h_hash_shift++) {
577 if ((sizeof(uint64_t) << (q2h_hash_shift + 1)) +
578 sizeof(struct quota2_header) >
579 (size_t)sblock->fs_bsize)
580 break;
581 }
582 q2h_hash_mask = (1 << q2h_hash_shift) - 1;
583 if (debug) {
584 printf("quota hash shift %d, %d entries, mask 0x%x\n",
585 q2h_hash_shift, (1 << q2h_hash_shift),
586 q2h_hash_mask);
587 }
588 uquot_user_hash =
589 calloc((1 << q2h_hash_shift), sizeof(struct uquot_hash));
590 uquot_group_hash =
591 calloc((1 << q2h_hash_shift), sizeof(struct uquot_hash));
592 if (uquot_user_hash == NULL || uquot_group_hash == NULL)
593 errexit("Cannot allocate space for quotas hash\n");
594 } else {
595 uquot_user_hash = uquot_group_hash = NULL;
596 q2h_hash_shift = q2h_hash_mask = 0;
597 }
598 return (1);
599 badsblabel:
600 markclean=0;
601 ckfini(1);
602 return (0);
603 }
604
605 #ifndef NO_APPLE_UFS
606 static int
readappleufs(void)607 readappleufs(void)
608 {
609 daddr_t label = APPLEUFS_LABEL_OFFSET / dev_bsize;
610 struct appleufslabel *appleufs;
611 int i;
612
613 /* XXX do we have to deal with APPLEUFS_LABEL_OFFSET not
614 * being block aligned (CD's?)
615 */
616 if (APPLEUFS_LABEL_SIZE % dev_bsize != 0)
617 return 0;
618 if (bread(fsreadfd, (char *)appleufsblk.b_un.b_fs, label,
619 (long)APPLEUFS_LABEL_SIZE) != 0)
620 return 0;
621 appleufsblk.b_bno = label;
622 appleufsblk.b_size = APPLEUFS_LABEL_SIZE;
623
624 appleufs = appleufsblk.b_un.b_appleufs;
625
626 if (ntohl(appleufs->ul_magic) != APPLEUFS_LABEL_MAGIC) {
627 if (!isappleufs) {
628 return 0;
629 } else {
630 pfatal("MISSING APPLEUFS VOLUME LABEL\n");
631 if (reply("FIX") == 0) {
632 return 1;
633 }
634 ffs_appleufs_set(appleufs, NULL, -1, 0);
635 appleufsdirty();
636 }
637 }
638
639 if (ntohl(appleufs->ul_version) != APPLEUFS_LABEL_VERSION) {
640 pwarn("INCORRECT APPLE UFS VERSION NUMBER (%d should be %d)",
641 ntohl(appleufs->ul_version),APPLEUFS_LABEL_VERSION);
642 if (preen) {
643 printf(" (CORRECTED)\n");
644 }
645 if (preen || reply("CORRECT")) {
646 appleufs->ul_version = htonl(APPLEUFS_LABEL_VERSION);
647 appleufsdirty();
648 }
649 }
650
651 if (ntohs(appleufs->ul_namelen) > APPLEUFS_MAX_LABEL_NAME) {
652 pwarn("APPLE UFS LABEL NAME TOO LONG");
653 if (preen) {
654 printf(" (TRUNCATED)\n");
655 }
656 if (preen || reply("TRUNCATE")) {
657 appleufs->ul_namelen = htons(APPLEUFS_MAX_LABEL_NAME);
658 appleufsdirty();
659 }
660 }
661
662 if (ntohs(appleufs->ul_namelen) == 0) {
663 pwarn("MISSING APPLE UFS LABEL NAME");
664 if (preen) {
665 printf(" (FIXED)\n");
666 }
667 if (preen || reply("FIX")) {
668 ffs_appleufs_set(appleufs, NULL, -1, 0);
669 appleufsdirty();
670 }
671 }
672
673 /* Scan name for first illegal character */
674 for (i=0;i<ntohs(appleufs->ul_namelen);i++) {
675 if ((appleufs->ul_name[i] == '\0') ||
676 (appleufs->ul_name[i] == ':') ||
677 (appleufs->ul_name[i] == '/')) {
678 pwarn("APPLE UFS LABEL NAME CONTAINS ILLEGAL CHARACTER");
679 if (preen) {
680 printf(" (TRUNCATED)\n");
681 }
682 if (preen || reply("TRUNCATE")) {
683 appleufs->ul_namelen = i+1;
684 appleufsdirty();
685 }
686 break;
687 }
688 }
689
690 /* Check the checksum last, because if anything else was wrong,
691 * then the checksum gets reset anyway.
692 */
693 appleufs->ul_checksum = 0;
694 appleufs->ul_checksum = ffs_appleufs_cksum(appleufs);
695 if (appleufsblk.b_un.b_appleufs->ul_checksum != appleufs->ul_checksum) {
696 pwarn("INVALID APPLE UFS CHECKSUM (%#04x should be %#04x)",
697 appleufsblk.b_un.b_appleufs->ul_checksum, appleufs->ul_checksum);
698 if (preen) {
699 printf(" (CORRECTED)\n");
700 }
701 if (preen || reply("CORRECT")) {
702 appleufsdirty();
703 } else {
704 /* put the incorrect checksum back in place */
705 appleufs->ul_checksum = appleufsblk.b_un.b_appleufs->ul_checksum;
706 }
707 }
708 return 1;
709 }
710 #endif /* !NO_APPLE_UFS */
711
712 /*
713 * Detect byte order. Return 0 if valid magic found, -1 otherwise.
714 */
715 static int
detect_byteorder(struct fs * fs,int sblockoff)716 detect_byteorder(struct fs *fs, int sblockoff)
717 {
718 if (sblockoff == SBLOCK_UFS2 && (fs->fs_magic == FS_UFS1_MAGIC ||
719 fs->fs_magic == FS_UFS1_MAGIC_SWAPPED))
720 /* Likely to be the first alternate of a fs with 64k blocks */
721 return -1;
722 if (fs->fs_magic == FS_UFS1_MAGIC || fs->fs_magic == FS_UFS2_MAGIC ||
723 fs->fs_magic == FS_UFS2EA_MAGIC) {
724 #ifndef NO_FFS_EI
725 if (endian == 0 || BYTE_ORDER == endian) {
726 needswap = 0;
727 doswap = do_blkswap = do_dirswap = 0;
728 } else {
729 needswap = 1;
730 doswap = do_blkswap = do_dirswap = 1;
731 }
732 #endif
733 return 0;
734 }
735 #ifndef NO_FFS_EI
736 else if (fs->fs_magic == FS_UFS1_MAGIC_SWAPPED ||
737 fs->fs_magic == FS_UFS2_MAGIC_SWAPPED ||
738 fs->fs_magic == FS_UFS2EA_MAGIC_SWAPPED) {
739 if (endian == 0 || BYTE_ORDER != endian) {
740 needswap = 1;
741 doswap = do_blkswap = do_dirswap = 0;
742 } else {
743 needswap = 0;
744 doswap = do_blkswap = do_dirswap = 1;
745 }
746 return 0;
747 }
748 #endif
749 return -1;
750 }
751
752 /* Update on-disk fs->fs_magic if we are converting */
753 void
cvt_magic(struct fs * fs)754 cvt_magic(struct fs *fs)
755 {
756
757 if (is_ufs2ea || doing2ea) {
758 if (fs->fs_magic == FS_UFS2_MAGIC) {
759 fs->fs_magic = FS_UFS2EA_MAGIC;
760 }
761 if (fs->fs_magic == FS_UFS2_MAGIC_SWAPPED) {
762 fs->fs_magic = FS_UFS2EA_MAGIC_SWAPPED;
763 }
764 }
765 if (doing2noea) {
766 if (fs->fs_magic == FS_UFS2EA_MAGIC) {
767 fs->fs_magic = FS_UFS2_MAGIC;
768 }
769 if (fs->fs_magic == FS_UFS2EA_MAGIC_SWAPPED) {
770 fs->fs_magic = FS_UFS2_MAGIC_SWAPPED;
771 }
772 }
773 }
774
775 /*
776 * Possible superblock locations ordered from most to least likely.
777 */
778 static off_t sblock_try[] = SBLOCKSEARCH;
779
780 /*
781 * Read in the super block and its summary info.
782 */
783 static int
readsb(int listerr)784 readsb(int listerr)
785 {
786 daddr_t super = 0;
787 struct fs *fs;
788 int i;
789
790 if (bflag) {
791 super = bflag;
792 if (bread(fsreadfd, (char *)sblk.b_un.b_fs, super,
793 (long)SBLOCKSIZE) != 0)
794 return (0);
795 fs = sblk.b_un.b_fs;
796 if (detect_byteorder(fs, -1) < 0) {
797 badsb(listerr, "MAGIC NUMBER WRONG");
798 return (0);
799 }
800 } else {
801 for (i = 0; sblock_try[i] != -1; i++) {
802 super = sblock_try[i] / dev_bsize;
803 if (bread(fsreadfd, (char *)sblk.b_un.b_fs,
804 super, (long)SBLOCKSIZE) != 0)
805 continue;
806 fs = sblk.b_un.b_fs;
807 if (detect_byteorder(fs, sblock_try[i]) == 0)
808 break;
809 }
810 if (sblock_try[i] == -1) {
811 badsb(listerr, "CAN'T FIND SUPERBLOCK");
812 return (0);
813 }
814 }
815 if (doswap) {
816 if (preen)
817 errx(FSCK_EXIT_USAGE,
818 "Incompatible options -B and -p");
819 if (nflag)
820 errx(FSCK_EXIT_USAGE,
821 "Incompatible options -B and -n");
822 if (endian == LITTLE_ENDIAN) {
823 if (!reply("CONVERT TO LITTLE ENDIAN"))
824 return 0;
825 } else if (endian == BIG_ENDIAN) {
826 if (!reply("CONVERT TO BIG ENDIAN"))
827 return 0;
828 } else
829 pfatal("INTERNAL ERROR: unknown endian");
830 }
831 if (needswap)
832 pwarn("** Swapped byte order\n");
833 /* swap SB byte order if asked */
834 if (doswap)
835 ffs_sb_swap(sblk.b_un.b_fs, sblk.b_un.b_fs);
836
837 memmove(sblock, sblk.b_un.b_fs, SBLOCKSIZE);
838 if (needswap)
839 ffs_sb_swap(sblk.b_un.b_fs, sblock);
840 if (sblock->fs_magic == FS_UFS2EA_MAGIC) {
841 is_ufs2ea = 1;
842 sblock->fs_magic = FS_UFS2_MAGIC;
843 }
844 is_ufs2 = sblock->fs_magic == FS_UFS2_MAGIC;
845
846 /* change on-disk magic if asked */
847 cvt_magic(fs);
848
849 /*
850 * run a few consistency checks of the super block
851 */
852 if (sblock->fs_sbsize > SBLOCKSIZE)
853 { badsb(listerr, "SIZE PREPOSTEROUSLY LARGE"); return (0); }
854 /*
855 * Compute block size that the filesystem is based on,
856 * according to FFS_FSBTODB, and adjust superblock block number
857 * so we can tell if this is an alternate later.
858 */
859 super *= dev_bsize;
860 dev_bsize = sblock->fs_fsize / FFS_FSBTODB(sblock, 1);
861 sblk.b_bno = super / dev_bsize;
862 sblk.b_size = SBLOCKSIZE;
863 if (bflag)
864 goto out;
865 /*
866 * Set all possible fields that could differ, then do check
867 * of whole super block against an alternate super block->
868 * When an alternate super-block is specified this check is skipped.
869 */
870 getblk(&asblk, cgsblock(sblock, sblock->fs_ncg - 1), sblock->fs_sbsize);
871 if (asblk.b_errs)
872 return (0);
873 /* swap SB byte order if asked */
874 if (doswap)
875 ffs_sb_swap(asblk.b_un.b_fs, asblk.b_un.b_fs);
876
877 memmove(altsblock, asblk.b_un.b_fs, sblock->fs_sbsize);
878 if (needswap)
879 ffs_sb_swap(asblk.b_un.b_fs, altsblock);
880 if (altsblock->fs_magic == FS_UFS2EA_MAGIC) {
881 altsblock->fs_magic = FS_UFS2_MAGIC;
882 }
883 /* change on-disk magic if asked */
884 cvt_magic(asblk.b_un.b_fs);
885 if (cmpsblks(sblock, altsblock)) {
886 if (debug) {
887 uint32_t *nlp, *olp, *endlp;
888
889 printf("superblock mismatches\n");
890 nlp = (uint32_t *)altsblock;
891 olp = (uint32_t *)sblock;
892 endlp = olp + (sblock->fs_sbsize / sizeof *olp);
893 for ( ; olp < endlp; olp++, nlp++) {
894 if (*olp == *nlp)
895 continue;
896 printf("offset %#x, original 0x%08x, alternate "
897 "0x%08x\n",
898 (int)((uint8_t *)olp-(uint8_t *)sblock),
899 *olp, *nlp);
900 }
901 }
902 badsb(listerr,
903 "VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN FIRST ALTERNATE");
904 /*
905 return (0);
906 */
907 }
908 out:
909
910 sb_oldfscompat_read(sblock, &sblocksave);
911
912 /* Now we know the SB is valid, we can write it back if needed */
913 if (doswap || doing2ea || doing2noea) {
914 sbdirty();
915 dirty(&asblk);
916 }
917 havesb = 1;
918 return (1);
919 }
920
921 int
cmpsblks(const struct fs * sb,struct fs * asb)922 cmpsblks(const struct fs *sb, struct fs *asb)
923 {
924 if (!is_ufs2 && ((sb->fs_old_flags & FS_FLAGS_UPDATED) == 0)) {
925 if (sb->fs_old_postblformat < FS_DYNAMICPOSTBLFMT)
926 return cmpsblks42(sb, asb);
927 else
928 return cmpsblks44(sb, asb);
929 }
930 if (asb->fs_sblkno != sb->fs_sblkno ||
931 asb->fs_cblkno != sb->fs_cblkno ||
932 asb->fs_iblkno != sb->fs_iblkno ||
933 asb->fs_dblkno != sb->fs_dblkno ||
934 asb->fs_ncg != sb->fs_ncg ||
935 asb->fs_bsize != sb->fs_bsize ||
936 asb->fs_fsize != sb->fs_fsize ||
937 asb->fs_frag != sb->fs_frag ||
938 asb->fs_bmask != sb->fs_bmask ||
939 asb->fs_fmask != sb->fs_fmask ||
940 asb->fs_bshift != sb->fs_bshift ||
941 asb->fs_fshift != sb->fs_fshift ||
942 asb->fs_fragshift != sb->fs_fragshift ||
943 asb->fs_fsbtodb != sb->fs_fsbtodb ||
944 asb->fs_sbsize != sb->fs_sbsize ||
945 asb->fs_nindir != sb->fs_nindir ||
946 asb->fs_inopb != sb->fs_inopb ||
947 asb->fs_cssize != sb->fs_cssize ||
948 asb->fs_ipg != sb->fs_ipg ||
949 asb->fs_fpg != sb->fs_fpg ||
950 asb->fs_magic != sb->fs_magic)
951 return 1;
952 return 0;
953 }
954
955 /* BSD 4.2 performed the following superblock comparison
956 * It should correspond to FS_42POSTBLFMT
957 * (although note that in 4.2, the fs_old_postblformat
958 * field didn't exist and the corresponding bits are
959 * located near the end of the postbl itself, where they
960 * are not likely to be used.)
961 */
962 int
cmpsblks42(const struct fs * sb,struct fs * asb)963 cmpsblks42(const struct fs *sb, struct fs *asb)
964 {
965 asb->fs_firstfield = sb->fs_firstfield; /* fs_link */
966 asb->fs_unused_1 = sb->fs_unused_1; /* fs_rlink */
967 asb->fs_old_time = sb->fs_old_time; /* fs_time */
968 asb->fs_old_cstotal = sb->fs_old_cstotal; /* fs_cstotal */
969 asb->fs_cgrotor = sb->fs_cgrotor;
970 asb->fs_fmod = sb->fs_fmod;
971 asb->fs_clean = sb->fs_clean;
972 asb->fs_ronly = sb->fs_ronly;
973 asb->fs_old_flags = sb->fs_old_flags;
974 asb->fs_maxcontig = sb->fs_maxcontig;
975 asb->fs_minfree = sb->fs_minfree;
976 asb->fs_old_rotdelay = sb->fs_old_rotdelay;
977 asb->fs_maxbpg = sb->fs_maxbpg;
978
979 /* The former fs_csp, totaling 128 bytes */
980 memmove(asb->fs_ocsp, sb->fs_ocsp, sizeof sb->fs_ocsp);
981 asb->fs_contigdirs = sb->fs_contigdirs;
982 asb->fs_csp = sb->fs_csp;
983 asb->fs_maxcluster = sb->fs_maxcluster;
984 asb->fs_active = sb->fs_active;
985
986 /* The former fs_fsmnt, totaling 512 bytes */
987 memmove(asb->fs_fsmnt, sb->fs_fsmnt, sizeof sb->fs_fsmnt);
988 memmove(asb->fs_volname, sb->fs_volname, sizeof sb->fs_volname);
989
990 return memcmp(sb, asb, sb->fs_sbsize);
991 }
992
993 /* BSD 4.4 performed the following superblock comparison
994 * This was used in NetBSD through 1.6.1
995 *
996 * Note that this implementation is destructive to asb.
997 */
998 int
cmpsblks44(const struct fs * sb,struct fs * asb)999 cmpsblks44(const struct fs *sb, struct fs *asb)
1000 {
1001 /*
1002 * "Copy fields which we don't care if they're different in the
1003 * alternate superblocks, as they're either likely to be
1004 * different because they're per-cylinder-group specific, or
1005 * because they're transient details which are only maintained
1006 * in the primary superblock."
1007 */
1008 asb->fs_firstfield = sb->fs_firstfield;
1009 asb->fs_unused_1 = sb->fs_unused_1;
1010 asb->fs_old_time = sb->fs_old_time;
1011 asb->fs_old_cstotal = sb->fs_old_cstotal;
1012 asb->fs_cgrotor = sb->fs_cgrotor;
1013 asb->fs_fmod = sb->fs_fmod;
1014 asb->fs_clean = sb->fs_clean;
1015 asb->fs_ronly = sb->fs_ronly;
1016 asb->fs_old_flags = sb->fs_old_flags;
1017 asb->fs_maxcontig = sb->fs_maxcontig;
1018 asb->fs_minfree = sb->fs_minfree;
1019 asb->fs_optim = sb->fs_optim;
1020 asb->fs_old_rotdelay = sb->fs_old_rotdelay;
1021 asb->fs_maxbpg = sb->fs_maxbpg;
1022
1023 /* The former fs_csp and fs_maxcluster, totaling 128 bytes */
1024 memmove(asb->fs_ocsp, sb->fs_ocsp, sizeof sb->fs_ocsp);
1025 asb->fs_contigdirs = sb->fs_contigdirs;
1026 asb->fs_csp = sb->fs_csp;
1027 asb->fs_maxcluster = sb->fs_maxcluster;
1028 asb->fs_active = sb->fs_active;
1029
1030 /* The former fs_fsmnt, totaling 512 bytes */
1031 memmove(asb->fs_fsmnt, sb->fs_fsmnt, sizeof sb->fs_fsmnt);
1032 memmove(asb->fs_volname, sb->fs_volname, sizeof sb->fs_volname);
1033
1034 /* The former fs_sparecon, totaling 200 bytes */
1035 memmove(asb->fs_snapinum,
1036 sb->fs_snapinum, sizeof sb->fs_snapinum);
1037 asb->fs_avgfilesize = sb->fs_avgfilesize;
1038 asb->fs_avgfpdir = sb->fs_avgfpdir;
1039 asb->fs_save_cgsize = sb->fs_save_cgsize;
1040 memmove(asb->fs_sparecon32,
1041 sb->fs_sparecon32, sizeof sb->fs_sparecon32);
1042 asb->fs_flags = sb->fs_flags;
1043
1044 /* Original comment:
1045 * "The following should not have to be copied, but need to be."
1046 */
1047 asb->fs_fsbtodb = sb->fs_fsbtodb;
1048 asb->fs_old_interleave = sb->fs_old_interleave;
1049 asb->fs_old_npsect = sb->fs_old_npsect;
1050 asb->fs_old_nrpos = sb->fs_old_nrpos;
1051 asb->fs_state = sb->fs_state;
1052 asb->fs_qbmask = sb->fs_qbmask;
1053 asb->fs_qfmask = sb->fs_qfmask;
1054 asb->fs_state = sb->fs_state;
1055 asb->fs_maxfilesize = sb->fs_maxfilesize;
1056
1057 /*
1058 * "Compare the superblocks, effectively checking every other
1059 * field to see if they differ."
1060 */
1061 return memcmp(sb, asb, sb->fs_sbsize);
1062 }
1063
1064 static void
badsb(int listerr,const char * s)1065 badsb(int listerr, const char *s)
1066 {
1067
1068 if (!listerr)
1069 return;
1070 if (preen)
1071 printf("%s: ", cdevname());
1072 pfatal("BAD SUPER BLOCK: %s\n", s);
1073 }
1074
1075 /*
1076 * Calculate a prototype superblock based on information in the disk label.
1077 * When done the cgsblock macro can be calculated and the fs_ncg field
1078 * can be used. Do NOT attempt to use other macros without verifying that
1079 * their needed information is available!
1080 */
1081 static int
calcsb(const char * dev,int devfd,struct fs * fs)1082 calcsb(const char *dev, int devfd, struct fs *fs)
1083 {
1084 struct dkwedge_info dkw;
1085 struct disk_geom geo;
1086 int i, nspf;
1087
1088 if (getdiskinfo(dev, fsreadfd, NULL, &geo, &dkw) == -1)
1089 pfatal("%s: CANNOT FIGURE OUT FILE SYSTEM PARTITION\n", dev);
1090 if (dkw.dkw_parent[0] == '\0') {
1091 pfatal("%s: CANNOT FIGURE OUT FILE SYSTEM PARTITION\n", dev);
1092 return (0);
1093 }
1094 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_FFS)
1095 #ifndef NO_APPLE_UFS
1096 && strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS)
1097 #endif
1098 ) {
1099 pfatal("%s: NOT LABELED AS A BSD FILE SYSTEM (%s)\n",
1100 dev, dkw.dkw_ptype);
1101 return (0);
1102 }
1103 if (geo.dg_secsize == 0) {
1104 pfatal("%s: CANNOT FIGURE OUT SECTOR SIZE\n", dev);
1105 return 0;
1106 }
1107 if (geo.dg_secpercyl == 0) {
1108 pfatal("%s: CANNOT FIGURE OUT SECTORS PER CYLINDER\n", dev);
1109 return 0;
1110 }
1111 if (sblk.b_un.b_fs->fs_fsize == 0) {
1112 pfatal("%s: CANNOT FIGURE OUT FRAG BLOCK SIZE\n", dev);
1113 return 0;
1114 }
1115 if (sblk.b_un.b_fs->fs_fpg == 0) {
1116 pfatal("%s: CANNOT FIGURE OUT FRAGS PER GROUP\n", dev);
1117 return 0;
1118 }
1119 if (sblk.b_un.b_fs->fs_old_cpg == 0) {
1120 pfatal("%s: CANNOT FIGURE OUT OLD CYLINDERS PER GROUP\n", dev);
1121 return 0;
1122 }
1123 memcpy(fs, sblk.b_un.b_fs, sizeof(struct fs));
1124 nspf = fs->fs_fsize / geo.dg_secsize;
1125 fs->fs_old_nspf = nspf;
1126 for (fs->fs_fsbtodb = 0, i = nspf; i > 1; i >>= 1)
1127 fs->fs_fsbtodb++;
1128 dev_bsize = geo.dg_secsize;
1129 if (fs->fs_magic == FS_UFS2_MAGIC) {
1130 fs->fs_ncg = howmany(fs->fs_size, fs->fs_fpg);
1131 } else /* if (fs->fs_magic == FS_UFS1_MAGIC) */ {
1132 fs->fs_old_cgmask = 0xffffffff;
1133 for (i = geo.dg_ntracks; i > 1; i >>= 1)
1134 fs->fs_old_cgmask <<= 1;
1135 if (!POWEROF2(geo.dg_ntracks))
1136 fs->fs_old_cgmask <<= 1;
1137 fs->fs_old_cgoffset = roundup(
1138 howmany(geo.dg_nsectors, nspf), fs->fs_frag);
1139 fs->fs_fpg = (fs->fs_old_cpg * geo.dg_secpercyl) / nspf;
1140 fs->fs_ncg = howmany(fs->fs_size / geo.dg_secpercyl,
1141 fs->fs_old_cpg);
1142 }
1143 return (1);
1144 }
1145
1146 /*
1147 * Test the list of snapshot inode numbers for duplicates and repair.
1148 */
1149 static int
check_snapinum(void)1150 check_snapinum(void)
1151 {
1152 int loc, loc2, res;
1153 uint32_t *snapinum = &sblock->fs_snapinum[0];
1154
1155 res = 0;
1156
1157 if (isappleufs)
1158 return 0;
1159
1160 for (loc = 0; loc < FSMAXSNAP; loc++) {
1161 if (snapinum[loc] == 0)
1162 break;
1163 for (loc2 = loc + 1; loc2 < FSMAXSNAP; loc2++) {
1164 if (snapinum[loc2] == 0 ||
1165 snapinum[loc2] == snapinum[loc])
1166 break;
1167 }
1168 if (loc2 >= FSMAXSNAP || snapinum[loc2] == 0)
1169 continue;
1170 pwarn("SNAPSHOT INODE %u ALREADY ON LIST%s", snapinum[loc2],
1171 (res ? "" : "\n"));
1172 res = 1;
1173 for (loc2 = loc + 1; loc2 < FSMAXSNAP; loc2++) {
1174 if (snapinum[loc2] == 0)
1175 break;
1176 snapinum[loc2 - 1] = snapinum[loc2];
1177 }
1178 snapinum[loc2 - 1] = 0;
1179 loc--;
1180 }
1181
1182 return res;
1183 }
1184