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Expand PMF_FN_* macros.
[netbsd-mini2440.git] / sbin / fsck_ffs / setup.c
blob40bab5aea9624e8f5ac060e305f97df25a89f112
1 /* $NetBSD: setup.c,v 1.88 2009/09/13 14:25:28 bouyer 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 1.88 2009/09/13 14:25:28 bouyer 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/ffs/fs.h>
52 #include <ufs/ffs/ffs_extern.h>
53
54 #include <ctype.h>
55 #include <err.h>
56 #include <errno.h>
57 #include <stdio.h>
58 #include <stdlib.h>
59 #include <string.h>
60
61 #include "fsck.h"
62 #include "extern.h"
63 #include "fsutil.h"
64 #include "partutil.h"
65 #include "exitvalues.h"
66
67 #define POWEROF2(num) (((num) & ((num) - 1)) == 0)
68
69 static void badsb(int, const char *);
70 static int calcsb(const char *, int, struct fs *);
71 static int readsb(int);
72 static int readappleufs(void);
73
74 int16_t sblkpostbl[256];
75
76 /*
77 * Read in a superblock finding an alternate if necessary.
78 * Return 1 if successful, 0 if unsuccessful, -1 if filesystem
79 * is already clean (preen mode only).
80 */
81 int
82 setup(const char *dev, const char *origdev)
83 {
84 long cg, size, asked, i, j;
85 long bmapsize;
86 struct disk_geom geo;
87 struct dkwedge_info dkw;
88 off_t sizepb;
89 struct stat statb;
90 struct fs proto;
91 int doskipclean;
92 u_int64_t maxfilesize;
93 struct csum *ccsp;
94 int fd;
95
96 havesb = 0;
97 fswritefd = -1;
98 doskipclean = skipclean;
99 if (stat(dev, &statb) < 0) {
100 printf("Can't stat %s: %s\n", dev, strerror(errno));
101 return (0);
102 }
103 if (!forceimage && !S_ISCHR(statb.st_mode)) {
104 pfatal("%s is not a character device", dev);
105 if (reply("CONTINUE") == 0)
106 return (0);
107 }
108 if ((fsreadfd = open(dev, O_RDONLY)) < 0) {
109 printf("Can't open %s: %s\n", dev, strerror(errno));
110 return (0);
111 }
112 if (nflag || (fswritefd = open(dev, O_WRONLY)) < 0) {
113 fswritefd = -1;
114 if (preen)
115 pfatal("NO WRITE ACCESS");
116 printf("** %s (NO WRITE)\n", dev);
117 quiet = 0;
118 } else
119 if (!preen && !quiet)
120 printf("** %s\n", dev);
121 fsmodified = 0;
122 lfdir = 0;
123 initbarea(&sblk);
124 initbarea(&asblk);
125 sblk.b_un.b_buf = malloc(SBLOCKSIZE);
126 sblock = malloc(SBLOCKSIZE);
127 asblk.b_un.b_buf = malloc(SBLOCKSIZE);
128 altsblock = malloc(SBLOCKSIZE);
129 if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL ||
130 sblock == NULL || altsblock == NULL)
131 errexit("Cannot allocate space for superblock");
132 if (strcmp(dev, origdev) && !forceimage) {
133 /*
134 * dev isn't the original fs (for example it's a snapshot)
135 * do getdiskinfo on the original device
136 */
137 fd = open(origdev, O_RDONLY);
138 if (fd < 0) {
139 warn("Can't open %s", origdev);
140 return (0);
141 }
142 } else {
143 fd = fsreadfd;
144 }
145 if (!forceimage && getdiskinfo(origdev, fd, NULL, &geo, &dkw) != -1)
146 dev_bsize = secsize = geo.dg_secsize;
147 else
148 dev_bsize = secsize = DEV_BSIZE;
149 /*
150 * Read in the superblock, looking for alternates if necessary
151 */
152 if (readsb(1) == 0) {
153 if (bflag || preen || forceimage ||
154 calcsb(dev, fsreadfd, &proto) == 0)
155 return(0);
156 if (reply("LOOK FOR ALTERNATE SUPERBLOCKS") == 0)
157 return (0);
158 for (cg = 0; cg < proto.fs_ncg; cg++) {
159 bflag = fsbtodb(&proto, cgsblock(&proto, cg));
160 if (readsb(0) != 0)
161 break;
162 }
163 if (cg >= proto.fs_ncg) {
164 printf("%s %s\n%s %s\n%s %s\n",
165 "SEARCH FOR ALTERNATE SUPER-BLOCK",
166 "FAILED. YOU MUST USE THE",
167 "-b OPTION TO fsck_ffs TO SPECIFY THE",
168 "LOCATION OF AN ALTERNATE",
169 "SUPER-BLOCK TO SUPPLY NEEDED",
170 "INFORMATION; SEE fsck_ffs(8).");
171 return(0);
172 }
173 doskipclean = 0;
174 pwarn("USING ALTERNATE SUPERBLOCK AT %d\n", bflag);
175 }
176 /* ffs_superblock_layout() == 2 */
177 if (sblock->fs_magic != FS_UFS1_MAGIC ||
178 (sblock->fs_old_flags & FS_FLAGS_UPDATED) != 0) {
179 /* can have WAPBL */
180 if (check_wapbl() != 0) {
181 doskipclean = 0;
182 }
183 if (sblock->fs_flags & FS_DOWAPBL) {
184 if (preen && skipclean) {
185 if (!quiet)
186 pwarn("file system is journaled; "
187 "not checking\n");
188 return (-1);
189 }
190 if (!quiet)
191 pwarn("** File system is journaled; "
192 "replaying journal\n");
193 replay_wapbl();
194 doskipclean = 0;
195 sblock->fs_flags &= ~FS_DOWAPBL;
196 sbdirty();
197 /* Although we may have updated the superblock from
198 * the journal, we are still going to do a full check,
199 * so we don't bother to re-read the superblock from
200 * the journal.
201 * XXX, instead we could re-read the superblock and
202 * then not force doskipclean = 0
203 */
204 }
205 }
206 if (debug)
207 printf("clean = %d\n", sblock->fs_clean);
208 if (doswap)
209 doskipclean = 0;
210 if (sblock->fs_clean & FS_ISCLEAN) {
211 if (doskipclean) {
212 if (!quiet)
213 pwarn("%sile system is clean; not checking\n",
214 preen ? "f" : "** F");
215 return (-1);
216 }
217 if (!preen && !doswap)
218 pwarn("** File system is already clean\n");
219 }
220 maxfsblock = sblock->fs_size;
221 maxino = sblock->fs_ncg * sblock->fs_ipg;
222 sizepb = sblock->fs_bsize;
223 maxfilesize = sblock->fs_bsize * NDADDR - 1;
224 for (i = 0; i < NIADDR; i++) {
225 sizepb *= NINDIR(sblock);
226 maxfilesize += sizepb;
227 }
228 if ((!is_ufs2 && cvtlevel >= 4) &&
229 (sblock->fs_old_flags & FS_FLAGS_UPDATED) == 0) {
230 if (preen)
231 pwarn("CONVERTING TO NEW SUPERBLOCK LAYOUT\n");
232 else if (!reply("CONVERT TO NEW SUPERBLOCK LAYOUT"))
233 return(0);
234 sblock->fs_old_flags |= FS_FLAGS_UPDATED;
235 /* Disable the postbl tables */
236 sblock->fs_old_cpc = 0;
237 sblock->fs_old_nrpos = 1;
238 sblock->fs_old_trackskew = 0;
239 /* The other fields have already been updated by
240 * sb_oldfscompat_read
241 */
242 sbdirty();
243 }
244 if (!is_ufs2 && cvtlevel == 3 &&
245 (sblock->fs_old_flags & FS_FLAGS_UPDATED)) {
246 if (preen)
247 pwarn("DOWNGRADING TO OLD SUPERBLOCK LAYOUT\n");
248 else if (!reply("DOWNGRADE TO OLD SUPERBLOCK LAYOUT"))
249 return(0);
250 sblock->fs_old_flags &= ~FS_FLAGS_UPDATED;
251 sb_oldfscompat_write(sblock, sblock);
252 sblock->fs_old_flags &= ~FS_FLAGS_UPDATED; /* just in case */
253 /* Leave postbl tables disabled, but blank its superblock region anyway */
254 sblock->fs_old_postblformat = FS_DYNAMICPOSTBLFMT;
255 sblock->fs_old_cpc = 0;
256 sblock->fs_old_nrpos = 1;
257 sblock->fs_old_trackskew = 0;
258 memset(&sblock->fs_old_postbl_start, 0xff, 256);
259 sb_oldfscompat_read(sblock, &sblocksave);
260 sbdirty();
261 }
262 /*
263 * Check and potentially fix certain fields in the super block.
264 */
265 if (sblock->fs_flags & ~(FS_KNOWN_FLAGS)) {
266 pfatal("UNKNOWN FLAGS=0x%08x IN SUPERBLOCK", sblock->fs_flags);
267 if (reply("CLEAR") == 1) {
268 sblock->fs_flags &= FS_KNOWN_FLAGS;
269 sbdirty();
270 }
271 }
272 if (sblock->fs_optim != FS_OPTTIME && sblock->fs_optim != FS_OPTSPACE) {
273 pfatal("UNDEFINED OPTIMIZATION IN SUPERBLOCK");
274 if (reply("SET TO DEFAULT") == 1) {
275 sblock->fs_optim = FS_OPTTIME;
276 sbdirty();
277 }
278 }
279 if ((sblock->fs_minfree < 0 || sblock->fs_minfree > 99)) {
280 pfatal("IMPOSSIBLE MINFREE=%d IN SUPERBLOCK",
281 sblock->fs_minfree);
282 if (reply("SET TO DEFAULT") == 1) {
283 sblock->fs_minfree = 10;
284 sbdirty();
285 }
286 }
287 if (!is_ufs2 && sblock->fs_old_postblformat != FS_42POSTBLFMT &&
288 (sblock->fs_old_interleave < 1 ||
289 sblock->fs_old_interleave > sblock->fs_old_nsect)) {
290 pwarn("IMPOSSIBLE INTERLEAVE=%d IN SUPERBLOCK",
291 sblock->fs_old_interleave);
292 sblock->fs_old_interleave = 1;
293 if (preen)
294 printf(" (FIXED)\n");
295 if (preen || reply("SET TO DEFAULT") == 1) {
296 sbdirty();
297 dirty(&asblk);
298 }
299 }
300 if (!is_ufs2 && sblock->fs_old_postblformat != FS_42POSTBLFMT &&
301 (sblock->fs_old_npsect < sblock->fs_old_nsect ||
302 sblock->fs_old_npsect > sblock->fs_old_nsect*2)) {
303 pwarn("IMPOSSIBLE NPSECT=%d IN SUPERBLOCK",
304 sblock->fs_old_npsect);
305 sblock->fs_old_npsect = sblock->fs_old_nsect;
306 if (preen)
307 printf(" (FIXED)\n");
308 if (preen || reply("SET TO DEFAULT") == 1) {
309 sbdirty();
310 dirty(&asblk);
311 }
312 }
313 if (sblock->fs_bmask != ~(sblock->fs_bsize - 1)) {
314 pwarn("INCORRECT BMASK=0x%x IN SUPERBLOCK",
315 sblock->fs_bmask);
316 sblock->fs_bmask = ~(sblock->fs_bsize - 1);
317 if (preen)
318 printf(" (FIXED)\n");
319 if (preen || reply("FIX") == 1) {
320 sbdirty();
321 dirty(&asblk);
322 }
323 }
324 if (sblock->fs_fmask != ~(sblock->fs_fsize - 1)) {
325 pwarn("INCORRECT FMASK=0x%x IN SUPERBLOCK",
326 sblock->fs_fmask);
327 sblock->fs_fmask = ~(sblock->fs_fsize - 1);
328 if (preen)
329 printf(" (FIXED)\n");
330 if (preen || reply("FIX") == 1) {
331 sbdirty();
332 dirty(&asblk);
333 }
334 }
335 if (is_ufs2 || sblock->fs_old_inodefmt >= FS_44INODEFMT) {
336 if (sblock->fs_maxfilesize != maxfilesize) {
337 pwarn("INCORRECT MAXFILESIZE=%lld IN SUPERBLOCK",
338 (unsigned long long)sblock->fs_maxfilesize);
339 sblock->fs_maxfilesize = maxfilesize;
340 if (preen)
341 printf(" (FIXED)\n");
342 if (preen || reply("FIX") == 1) {
343 sbdirty();
344 dirty(&asblk);
345 }
346 }
347 if ((is_ufs2 && sblock->fs_maxsymlinklen != MAXSYMLINKLEN_UFS2)
348 ||
349 (!is_ufs2 && sblock->fs_maxsymlinklen != MAXSYMLINKLEN_UFS1))
350 {
351 pwarn("INCORRECT MAXSYMLINKLEN=%d IN SUPERBLOCK",
352 sblock->fs_maxsymlinklen);
353 sblock->fs_maxsymlinklen = is_ufs2 ?
354 MAXSYMLINKLEN_UFS2 : MAXSYMLINKLEN_UFS1;
355 if (preen)
356 printf(" (FIXED)\n");
357 if (preen || reply("FIX") == 1) {
358 sbdirty();
359 dirty(&asblk);
360 }
361 }
362 if (sblock->fs_qbmask != ~sblock->fs_bmask) {
363 pwarn("INCORRECT QBMASK=%#llx IN SUPERBLOCK",
364 (unsigned long long)sblock->fs_qbmask);
365 sblock->fs_qbmask = ~sblock->fs_bmask;
366 if (preen)
367 printf(" (FIXED)\n");
368 if (preen || reply("FIX") == 1) {
369 sbdirty();
370 dirty(&asblk);
371 }
372 }
373 if (sblock->fs_qfmask != ~sblock->fs_fmask) {
374 pwarn("INCORRECT QFMASK=%#llx IN SUPERBLOCK",
375 (unsigned long long)sblock->fs_qfmask);
376 sblock->fs_qfmask = ~sblock->fs_fmask;
377 if (preen)
378 printf(" (FIXED)\n");
379 if (preen || reply("FIX") == 1) {
380 sbdirty();
381 dirty(&asblk);
382 }
383 }
384 newinofmt = 1;
385 } else {
386 sblock->fs_qbmask = ~sblock->fs_bmask;
387 sblock->fs_qfmask = ~sblock->fs_fmask;
388 newinofmt = 0;
389 }
390 /*
391 * Convert to new inode format.
392 */
393 if (!is_ufs2 && cvtlevel >= 2 &&
394 sblock->fs_old_inodefmt < FS_44INODEFMT) {
395 if (preen)
396 pwarn("CONVERTING TO NEW INODE FORMAT\n");
397 else if (!reply("CONVERT TO NEW INODE FORMAT"))
398 return(0);
399 doinglevel2++;
400 sblock->fs_old_inodefmt = FS_44INODEFMT;
401 sblock->fs_maxfilesize = maxfilesize;
402 sblock->fs_maxsymlinklen = MAXSYMLINKLEN_UFS1;
403 sblock->fs_qbmask = ~sblock->fs_bmask;
404 sblock->fs_qfmask = ~sblock->fs_fmask;
405 sbdirty();
406 dirty(&asblk);
407 }
408 /*
409 * Convert to new cylinder group format.
410 */
411 if (!is_ufs2 && cvtlevel >= 1 &&
412 sblock->fs_old_postblformat == FS_42POSTBLFMT) {
413 if (preen)
414 pwarn("CONVERTING TO NEW CYLINDER GROUP FORMAT\n");
415 else if (!reply("CONVERT TO NEW CYLINDER GROUP FORMAT"))
416 return(0);
417 doinglevel1++;
418 sblock->fs_old_postblformat = FS_DYNAMICPOSTBLFMT;
419 sblock->fs_old_nrpos = 8;
420 sblock->fs_old_postbloff =
421 (char *)(&sblock->fs_old_postbl_start) -
422 (char *)(&sblock->fs_firstfield);
423 sblock->fs_old_rotbloff =
424 (char *)(&sblock->fs_magic+1) -
425 (char *)(&sblock->fs_firstfield);
426 sblock->fs_cgsize =
427 fragroundup(sblock, CGSIZE(sblock));
428 sbdirty();
429 dirty(&asblk);
430 }
431 if (asblk.b_dirty && !bflag) {
432 memmove(sblk.b_un.b_fs, sblock, SBLOCKSIZE);
433 sb_oldfscompat_write(sblk.b_un.b_fs, sblocksave);
434 if (needswap)
435 ffs_sb_swap(sblk.b_un.b_fs, sblk.b_un.b_fs);
436 memmove(asblk.b_un.b_fs, sblk.b_un.b_fs, (size_t)sblock->fs_sbsize);
437 flush(fswritefd, &asblk);
438 }
439 /*
440 * read in the summary info.
441 */
442 asked = 0;
443 sblock->fs_csp = (struct csum *)calloc(1, sblock->fs_cssize);
444 if (sblock->fs_csp == NULL) {
445 pwarn("cannot alloc %u bytes for summary info\n",
446 sblock->fs_cssize);
447 goto badsblabel;
448 }
449 for (i = 0, j = 0; i < sblock->fs_cssize; i += sblock->fs_bsize, j++) {
450 size = sblock->fs_cssize - i < sblock->fs_bsize ?
451 sblock->fs_cssize - i : sblock->fs_bsize;
452 ccsp = (struct csum *)((char *)sblock->fs_csp + i);
453 if (bread(fsreadfd, (char *)ccsp,
454 fsbtodb(sblock, sblock->fs_csaddr + j * sblock->fs_frag),
455 size) != 0 && !asked) {
456 pfatal("BAD SUMMARY INFORMATION");
457 if (reply("CONTINUE") == 0) {
458 markclean = 0;
459 exit(FSCK_EXIT_CHECK_FAILED);
460 }
461 asked++;
462 }
463 if (doswap) {
464 ffs_csum_swap(ccsp, ccsp, size);
465 bwrite(fswritefd, (char *)ccsp,
466 fsbtodb(sblock,
467 sblock->fs_csaddr + j * sblock->fs_frag),
468 size);
469 }
470 if (needswap)
471 ffs_csum_swap(ccsp, ccsp, size);
472 }
473 /*
474 * allocate and initialize the necessary maps
475 */
476 bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(int16_t));
477 blockmap = calloc((unsigned)bmapsize, sizeof (char));
478 if (blockmap == NULL) {
479 pwarn("cannot alloc %u bytes for blockmap\n",
480 (unsigned)bmapsize);
481 goto badsblabel;
482 }
483 inostathead = calloc((unsigned)(sblock->fs_ncg),
484 sizeof(struct inostatlist));
485 if (inostathead == NULL) {
486 pwarn("cannot alloc %u bytes for inostathead\n",
487 (unsigned)(sizeof(struct inostatlist) * (sblock->fs_ncg)));
488 goto badsblabel;
489 }
490 /*
491 * cs_ndir may be inaccurate, particularly if we're using the -b
492 * option, so set a minimum to prevent bogus subdirectory reconnects
493 * and really inefficient directory scans.
494 * Also set a maximum in case the value is too large.
495 */
496 numdirs = sblock->fs_cstotal.cs_ndir;
497 if (numdirs < 1024)
498 numdirs = 1024;
499 if (numdirs > maxino + 1)
500 numdirs = maxino + 1;
501 dirhash = numdirs;
502 inplast = 0;
503 listmax = numdirs + 10;
504 inpsort = (struct inoinfo **)calloc((unsigned)listmax,
505 sizeof(struct inoinfo *));
506 inphead = (struct inoinfo **)calloc((unsigned)numdirs,
507 sizeof(struct inoinfo *));
508 if (inpsort == NULL || inphead == NULL) {
509 pwarn("cannot alloc %u bytes for inphead\n",
510 (unsigned)(numdirs * sizeof(struct inoinfo *)));
511 goto badsblabel;
512 }
513 cgrp = malloc(sblock->fs_cgsize);
514 if (cgrp == NULL) {
515 pwarn("cannot alloc %u bytes for cylinder group\n",
516 sblock->fs_cgsize);
517 goto badsblabel;
518 }
519 bufinit();
520 if (sblock->fs_flags & FS_DOSOFTDEP)
521 usedsoftdep = 1;
522 else
523 usedsoftdep = 0;
524
525 if (!forceimage && dkw.dkw_parent[0])
526 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0)
527 isappleufs = 1;
528
529 if (readappleufs())
530 isappleufs = 1;
531
532 dirblksiz = DIRBLKSIZ;
533 if (isappleufs)
534 dirblksiz = APPLEUFS_DIRBLKSIZ;
535
536 if (debug)
537 printf("isappleufs = %d, dirblksiz = %d\n", isappleufs, dirblksiz);
538
539 return (1);
540
541 badsblabel:
542 markclean=0;
543 ckfini();
544 return (0);
545 }
546
547 static int
548 readappleufs(void)
549 {
550 daddr_t label = APPLEUFS_LABEL_OFFSET / dev_bsize;
551 struct appleufslabel *appleufs;
552 int i;
553
554 /* XXX do we have to deal with APPLEUFS_LABEL_OFFSET not
555 * being block aligned (CD's?)
556 */
557 if (bread(fsreadfd, (char *)appleufsblk.b_un.b_fs, label,
558 (long)APPLEUFS_LABEL_SIZE) != 0)
559 return 0;
560 appleufsblk.b_bno = label;
561 appleufsblk.b_size = APPLEUFS_LABEL_SIZE;
562
563 appleufs = appleufsblk.b_un.b_appleufs;
564
565 if (ntohl(appleufs->ul_magic) != APPLEUFS_LABEL_MAGIC) {
566 if (!isappleufs) {
567 return 0;
568 } else {
569 pfatal("MISSING APPLEUFS VOLUME LABEL\n");
570 if (reply("FIX") == 0) {
571 return 1;
572 }
573 ffs_appleufs_set(appleufs, NULL, -1, 0);
574 appleufsdirty();
575 }
576 }
577
578 if (ntohl(appleufs->ul_version) != APPLEUFS_LABEL_VERSION) {
579 pwarn("INCORRECT APPLE UFS VERSION NUMBER (%d should be %d)",
580 ntohl(appleufs->ul_version),APPLEUFS_LABEL_VERSION);
581 if (preen) {
582 printf(" (CORRECTED)\n");
583 }
584 if (preen || reply("CORRECT")) {
585 appleufs->ul_version = htonl(APPLEUFS_LABEL_VERSION);
586 appleufsdirty();
587 }
588 }
589
590 if (ntohs(appleufs->ul_namelen) > APPLEUFS_MAX_LABEL_NAME) {
591 pwarn("APPLE UFS LABEL NAME TOO LONG");
592 if (preen) {
593 printf(" (TRUNCATED)\n");
594 }
595 if (preen || reply("TRUNCATE")) {
596 appleufs->ul_namelen = htons(APPLEUFS_MAX_LABEL_NAME);
597 appleufsdirty();
598 }
599 }
600
601 if (ntohs(appleufs->ul_namelen) == 0) {
602 pwarn("MISSING APPLE UFS LABEL NAME");
603 if (preen) {
604 printf(" (FIXED)\n");
605 }
606 if (preen || reply("FIX")) {
607 ffs_appleufs_set(appleufs, NULL, -1, 0);
608 appleufsdirty();
609 }
610 }
611
612 /* Scan name for first illegal character */
613 for (i=0;i<ntohs(appleufs->ul_namelen);i++) {
614 if ((appleufs->ul_name[i] == '\0') ||
615 (appleufs->ul_name[i] == ':') ||
616 (appleufs->ul_name[i] == '/')) {
617 pwarn("APPLE UFS LABEL NAME CONTAINS ILLEGAL CHARACTER");
618 if (preen) {
619 printf(" (TRUNCATED)\n");
620 }
621 if (preen || reply("TRUNCATE")) {
622 appleufs->ul_namelen = i+1;
623 appleufsdirty();
624 }
625 break;
626 }
627 }
628
629 /* Check the checksum last, because if anything else was wrong,
630 * then the checksum gets reset anyway.
631 */
632 appleufs->ul_checksum = 0;
633 appleufs->ul_checksum = ffs_appleufs_cksum(appleufs);
634 if (appleufsblk.b_un.b_appleufs->ul_checksum != appleufs->ul_checksum) {
635 pwarn("INVALID APPLE UFS CHECKSUM (%#04x should be %#04x)",
636 appleufsblk.b_un.b_appleufs->ul_checksum, appleufs->ul_checksum);
637 if (preen) {
638 printf(" (CORRECTED)\n");
639 }
640 if (preen || reply("CORRECT")) {
641 appleufsdirty();
642 } else {
643 /* put the incorrect checksum back in place */
644 appleufs->ul_checksum = appleufsblk.b_un.b_appleufs->ul_checksum;
645 }
646 }
647 return 1;
648 }
649
650 /*
651 * Detect byte order. Return 0 if valid magic found, -1 otherwise.
652 */
653 static int
654 detect_byteorder(struct fs *fs, int sblockoff)
655 {
656 if (sblockoff == SBLOCK_UFS2 && (fs->fs_magic == FS_UFS1_MAGIC ||
657 fs->fs_magic == bswap32(FS_UFS1_MAGIC)))
658 /* Likely to be the first alternate of a fs with 64k blocks */
659 return -1;
660 if (fs->fs_magic == FS_UFS1_MAGIC || fs->fs_magic == FS_UFS2_MAGIC) {
661 if (endian == 0 || BYTE_ORDER == endian) {
662 needswap = 0;
663 doswap = do_blkswap = do_dirswap = 0;
664 } else {
665 needswap = 1;
666 doswap = do_blkswap = do_dirswap = 1;
667 }
668 return 0;
669 } else if (fs->fs_magic == bswap32(FS_UFS1_MAGIC) ||
670 fs->fs_magic == bswap32(FS_UFS2_MAGIC)) {
671 if (endian == 0 || BYTE_ORDER != endian) {
672 needswap = 1;
673 doswap = do_blkswap = do_dirswap = 0;
674 } else {
675 needswap = 0;
676 doswap = do_blkswap = do_dirswap = 1;
677 }
678 return 0;
679 }
680 return -1;
681 }
682
683 /*
684 * Possible superblock locations ordered from most to least likely.
685 */
686 static off_t sblock_try[] = SBLOCKSEARCH;
687
688 /*
689 * Read in the super block and its summary info.
690 */
691 static int
692 readsb(int listerr)
693 {
694 daddr_t super = 0;
695 struct fs *fs;
696 int i;
697
698 if (bflag) {
699 super = bflag;
700 if (bread(fsreadfd, (char *)sblk.b_un.b_fs, super,
701 (long)SBLOCKSIZE) != 0)
702 return (0);
703 fs = sblk.b_un.b_fs;
704 if (detect_byteorder(fs, -1) < 0) {
705 badsb(listerr, "MAGIC NUMBER WRONG");
706 return (0);
707 }
708 } else {
709 for (i = 0; sblock_try[i] != -1; i++) {
710 super = sblock_try[i] / dev_bsize;
711 if (bread(fsreadfd, (char *)sblk.b_un.b_fs,
712 super, (long)SBLOCKSIZE) != 0)
713 continue;
714 fs = sblk.b_un.b_fs;
715 if (detect_byteorder(fs, sblock_try[i]) == 0)
716 break;
717 }
718 if (sblock_try[i] == -1) {
719 badsb(listerr, "CAN'T FIND SUPERBLOCK");
720 return (0);
721 }
722 }
723 if (doswap) {
724 if (preen)
725 errx(FSCK_EXIT_USAGE,
726 "Incompatible options -B and -p");
727 if (nflag)
728 errx(FSCK_EXIT_USAGE,
729 "Incompatible options -B and -n");
730 if (endian == LITTLE_ENDIAN) {
731 if (!reply("CONVERT TO LITTLE ENDIAN"))
732 return 0;
733 } else if (endian == BIG_ENDIAN) {
734 if (!reply("CONVERT TO BIG ENDIAN"))
735 return 0;
736 } else
737 pfatal("INTERNAL ERROR: unknown endian");
738 }
739 if (needswap)
740 pwarn("** Swapped byte order\n");
741 /* swap SB byte order if asked */
742 if (doswap)
743 ffs_sb_swap(sblk.b_un.b_fs, sblk.b_un.b_fs);
744
745 memmove(sblock, sblk.b_un.b_fs, SBLOCKSIZE);
746 if (needswap)
747 ffs_sb_swap(sblk.b_un.b_fs, sblock);
748
749 is_ufs2 = sblock->fs_magic == FS_UFS2_MAGIC;
750
751 /*
752 * run a few consistency checks of the super block
753 */
754 if (sblock->fs_sbsize > SBLOCKSIZE)
755 { badsb(listerr, "SIZE PREPOSTEROUSLY LARGE"); return (0); }
756 /*
757 * Compute block size that the filesystem is based on,
758 * according to fsbtodb, and adjust superblock block number
759 * so we can tell if this is an alternate later.
760 */
761 super *= dev_bsize;
762 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
763 sblk.b_bno = super / dev_bsize;
764 sblk.b_size = SBLOCKSIZE;
765 if (bflag)
766 goto out;
767 /*
768 * Set all possible fields that could differ, then do check
769 * of whole super block against an alternate super block->
770 * When an alternate super-block is specified this check is skipped.
771 */
772 getblk(&asblk, cgsblock(sblock, sblock->fs_ncg - 1), sblock->fs_sbsize);
773 if (asblk.b_errs)
774 return (0);
775 /* swap SB byte order if asked */
776 if (doswap)
777 ffs_sb_swap(asblk.b_un.b_fs, asblk.b_un.b_fs);
778
779 memmove(altsblock, asblk.b_un.b_fs, sblock->fs_sbsize);
780 if (needswap)
781 ffs_sb_swap(asblk.b_un.b_fs, altsblock);
782 if (cmpsblks(sblock, altsblock)) {
783 if (debug) {
784 uint32_t *nlp, *olp, *endlp;
785
786 printf("superblock mismatches\n");
787 nlp = (uint32_t *)altsblock;
788 olp = (uint32_t *)sblock;
789 endlp = olp + (sblock->fs_sbsize / sizeof *olp);
790 for ( ; olp < endlp; olp++, nlp++) {
791 if (*olp == *nlp)
792 continue;
793 printf("offset %#x, original 0x%08x, alternate "
794 "0x%08x\n",
795 (int)((uint8_t *)olp-(uint8_t *)sblock),
796 *olp, *nlp);
797 }
798 }
799 badsb(listerr,
800 "VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN FIRST ALTERNATE");
801 /*
802 return (0);
803 */
804 }
805 out:
806
807 sb_oldfscompat_read(sblock, &sblocksave);
808
809 /* Now we know the SB is valid, we can write it back if needed */
810 if (doswap) {
811 sbdirty();
812 dirty(&asblk);
813 }
814 havesb = 1;
815 return (1);
816 }
817
818 int
819 cmpsblks(const struct fs *sb, struct fs *asb)
820 {
821 if (!is_ufs2 && ((sb->fs_old_flags & FS_FLAGS_UPDATED) == 0)) {
822 if (sb->fs_old_postblformat < FS_DYNAMICPOSTBLFMT)
823 return cmpsblks42(sb, asb);
824 else
825 return cmpsblks44(sb, asb);
826 }
827 if (asb->fs_sblkno != sb->fs_sblkno ||
828 asb->fs_cblkno != sb->fs_cblkno ||
829 asb->fs_iblkno != sb->fs_iblkno ||
830 asb->fs_dblkno != sb->fs_dblkno ||
831 asb->fs_ncg != sb->fs_ncg ||
832 asb->fs_bsize != sb->fs_bsize ||
833 asb->fs_fsize != sb->fs_fsize ||
834 asb->fs_frag != sb->fs_frag ||
835 asb->fs_bmask != sb->fs_bmask ||
836 asb->fs_fmask != sb->fs_fmask ||
837 asb->fs_bshift != sb->fs_bshift ||
838 asb->fs_fshift != sb->fs_fshift ||
839 asb->fs_fragshift != sb->fs_fragshift ||
840 asb->fs_fsbtodb != sb->fs_fsbtodb ||
841 asb->fs_sbsize != sb->fs_sbsize ||
842 asb->fs_nindir != sb->fs_nindir ||
843 asb->fs_inopb != sb->fs_inopb ||
844 asb->fs_cssize != sb->fs_cssize ||
845 asb->fs_ipg != sb->fs_ipg ||
846 asb->fs_fpg != sb->fs_fpg ||
847 asb->fs_magic != sb->fs_magic)
848 return 1;
849 return 0;
850 }
851
852 /* BSD 4.2 performed the following superblock comparison
853 * It should correspond to FS_42POSTBLFMT
854 * (although note that in 4.2, the fs_old_postblformat
855 * field didn't exist and the corresponding bits are
856 * located near the end of the postbl itself, where they
857 * are not likely to be used.)
858 */
859 int
860 cmpsblks42(const struct fs *sb, struct fs *asb)
861 {
862 asb->fs_firstfield = sb->fs_firstfield; /* fs_link */
863 asb->fs_unused_1 = sb->fs_unused_1; /* fs_rlink */
864 asb->fs_old_time = sb->fs_old_time; /* fs_time */
865 asb->fs_old_cstotal = sb->fs_old_cstotal; /* fs_cstotal */
866 asb->fs_cgrotor = sb->fs_cgrotor;
867 asb->fs_fmod = sb->fs_fmod;
868 asb->fs_clean = sb->fs_clean;
869 asb->fs_ronly = sb->fs_ronly;
870 asb->fs_old_flags = sb->fs_old_flags;
871 asb->fs_maxcontig = sb->fs_maxcontig;
872 asb->fs_minfree = sb->fs_minfree;
873 asb->fs_old_rotdelay = sb->fs_old_rotdelay;
874 asb->fs_maxbpg = sb->fs_maxbpg;
875
876 /* The former fs_csp, totaling 128 bytes */
877 memmove(asb->fs_ocsp, sb->fs_ocsp, sizeof sb->fs_ocsp);
878 asb->fs_contigdirs = sb->fs_contigdirs;
879 asb->fs_csp = sb->fs_csp;
880 asb->fs_maxcluster = sb->fs_maxcluster;
881 asb->fs_active = sb->fs_active;
882
883 /* The former fs_fsmnt, totaling 512 bytes */
884 memmove(asb->fs_fsmnt, sb->fs_fsmnt, sizeof sb->fs_fsmnt);
885 memmove(asb->fs_volname, sb->fs_volname, sizeof sb->fs_volname);
886
887 return memcmp(sb, asb, sb->fs_sbsize);
888 }
889
890 /* BSD 4.4 performed the following superblock comparison
891 * This was used in NetBSD through 1.6.1
892 *
893 * Note that this implementation is destructive to asb.
894 */
895 int
896 cmpsblks44(const struct fs *sb, struct fs *asb)
897 {
898 /*
899 * "Copy fields which we don't care if they're different in the
900 * alternate superblocks, as they're either likely to be
901 * different because they're per-cylinder-group specific, or
902 * because they're transient details which are only maintained
903 * in the primary superblock."
904 */
905 asb->fs_firstfield = sb->fs_firstfield;
906 asb->fs_unused_1 = sb->fs_unused_1;
907 asb->fs_old_time = sb->fs_old_time;
908 asb->fs_old_cstotal = sb->fs_old_cstotal;
909 asb->fs_cgrotor = sb->fs_cgrotor;
910 asb->fs_fmod = sb->fs_fmod;
911 asb->fs_clean = sb->fs_clean;
912 asb->fs_ronly = sb->fs_ronly;
913 asb->fs_old_flags = sb->fs_old_flags;
914 asb->fs_maxcontig = sb->fs_maxcontig;
915 asb->fs_minfree = sb->fs_minfree;
916 asb->fs_optim = sb->fs_optim;
917 asb->fs_old_rotdelay = sb->fs_old_rotdelay;
918 asb->fs_maxbpg = sb->fs_maxbpg;
919
920 /* The former fs_csp and fs_maxcluster, totaling 128 bytes */
921 memmove(asb->fs_ocsp, sb->fs_ocsp, sizeof sb->fs_ocsp);
922 asb->fs_contigdirs = sb->fs_contigdirs;
923 asb->fs_csp = sb->fs_csp;
924 asb->fs_maxcluster = sb->fs_maxcluster;
925 asb->fs_active = sb->fs_active;
926
927 /* The former fs_fsmnt, totaling 512 bytes */
928 memmove(asb->fs_fsmnt, sb->fs_fsmnt, sizeof sb->fs_fsmnt);
929 memmove(asb->fs_volname, sb->fs_volname, sizeof sb->fs_volname);
930
931 /* The former fs_sparecon, totaling 200 bytes */
932 memmove(asb->fs_snapinum,
933 sb->fs_snapinum, sizeof sb->fs_snapinum);
934 asb->fs_avgfilesize = sb->fs_avgfilesize;
935 asb->fs_avgfpdir = sb->fs_avgfpdir;
936 asb->fs_save_cgsize = sb->fs_save_cgsize;
937 memmove(asb->fs_sparecon32,
938 sb->fs_sparecon32, sizeof sb->fs_sparecon32);
939 asb->fs_flags = sb->fs_flags;
940
941 /* Original comment:
942 * "The following should not have to be copied, but need to be."
943 */
944 asb->fs_fsbtodb = sb->fs_fsbtodb;
945 asb->fs_old_interleave = sb->fs_old_interleave;
946 asb->fs_old_npsect = sb->fs_old_npsect;
947 asb->fs_old_nrpos = sb->fs_old_nrpos;
948 asb->fs_state = sb->fs_state;
949 asb->fs_qbmask = sb->fs_qbmask;
950 asb->fs_qfmask = sb->fs_qfmask;
951 asb->fs_state = sb->fs_state;
952 asb->fs_maxfilesize = sb->fs_maxfilesize;
953
954 /*
955 * "Compare the superblocks, effectively checking every other
956 * field to see if they differ."
957 */
958 return memcmp(sb, asb, sb->fs_sbsize);
959 }
960
961
962 static void
963 badsb(int listerr, const char *s)
964 {
965
966 if (!listerr)
967 return;
968 if (preen)
969 printf("%s: ", cdevname());
970 pfatal("BAD SUPER BLOCK: %s\n", s);
971 }
972
973 /*
974 * Calculate a prototype superblock based on information in the disk label.
975 * When done the cgsblock macro can be calculated and the fs_ncg field
976 * can be used. Do NOT attempt to use other macros without verifying that
977 * their needed information is available!
978 */
979 static int
980 calcsb(const char *dev, int devfd, struct fs *fs)
981 {
982 struct dkwedge_info dkw;
983 struct disk_geom geo;
984 int i, nspf;
985
986 if (getdiskinfo(dev, fsreadfd, NULL, &geo, &dkw) == -1)
987 pfatal("%s: CANNOT FIGURE OUT FILE SYSTEM PARTITION\n", dev);
988 if (dkw.dkw_parent[0] == '\0') {
989 pfatal("%s: CANNOT FIGURE OUT FILE SYSTEM PARTITION\n", dev);
990 return (0);
991 }
992 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_FFS) &&
993 strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS)) {
994 pfatal("%s: NOT LABELED AS A BSD FILE SYSTEM (%s)\n",
995 dev, dkw.dkw_ptype);
996 return (0);
997 }
998 if (geo.dg_secsize == 0) {
999 pfatal("%s: CANNOT FIGURE OUT SECTOR SIZE\n", dev);
1000 return 0;
1001 }
1002 if (geo.dg_secpercyl == 0) {
1003 pfatal("%s: CANNOT FIGURE OUT SECTORS PER CYLINDER\n", dev);
1004 return 0;
1005 }
1006 if (sblk.b_un.b_fs->fs_fsize == 0) {
1007 pfatal("%s: CANNOT FIGURE OUT FRAG BLOCK SIZE\n", dev);
1008 return 0;
1009 }
1010 if (sblk.b_un.b_fs->fs_fpg == 0) {
1011 pfatal("%s: CANNOT FIGURE OUT FRAGS PER GROUP\n", dev);
1012 return 0;
1013 }
1014 if (sblk.b_un.b_fs->fs_old_cpg == 0) {
1015 pfatal("%s: CANNOT FIGURE OUT OLD CYLINDERS PER GROUP\n", dev);
1016 return 0;
1017 }
1018 memcpy(fs, sblk.b_un.b_fs, sizeof(struct fs));
1019 nspf = fs->fs_fsize / geo.dg_secsize;
1020 fs->fs_old_nspf = nspf;
1021 for (fs->fs_fsbtodb = 0, i = nspf; i > 1; i >>= 1)
1022 fs->fs_fsbtodb++;
1023 dev_bsize = geo.dg_secsize;
1024 if (fs->fs_magic == FS_UFS2_MAGIC) {
1025 fs->fs_ncg = howmany(fs->fs_size, fs->fs_fpg);
1026 } else /* if (fs->fs_magic == FS_UFS1_MAGIC) */ {
1027 fs->fs_old_cgmask = 0xffffffff;
1028 for (i = geo.dg_ntracks; i > 1; i >>= 1)
1029 fs->fs_old_cgmask <<= 1;
1030 if (!POWEROF2(geo.dg_ntracks))
1031 fs->fs_old_cgmask <<= 1;
1032 fs->fs_old_cgoffset = roundup(
1033 howmany(geo.dg_nsectors, nspf), fs->fs_frag);
1034 fs->fs_fpg = (fs->fs_old_cpg * geo.dg_secpercyl) / nspf;
1035 fs->fs_ncg = howmany(fs->fs_size / geo.dg_secpercyl,
1036 fs->fs_old_cpg);
1037 }
1038 return (1);
1039 }
NetBSD on the FriendlyARM MINI2440