1 /*        $NetBSD: dumpfs.c,v 1.69 2023/11/06 12:18:59 hannken Exp $  */
2 
3 /*
4  * Copyright (c) 1983, 1992, 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 __COPYRIGHT("@(#) Copyright (c) 1983, 1992, 1993\
35  The Regents of the University of California.  All rights reserved.");
36 #endif /* not lint */
37 
38 #ifndef lint
39 #if 0
40 static char sccsid[] = "@(#)dumpfs.c    8.5 (Berkeley) 4/29/95";
41 #else
42 __RCSID("$NetBSD: dumpfs.c,v 1.69 2023/11/06 12:18:59 hannken Exp $");
43 #endif
44 #endif /* not lint */
45 
46 #include <sys/param.h>
47 #include <sys/time.h>
48 
49 #include <sys/wapbl.h>
50 #include <sys/wapbl_replay.h>
51 
52 #include <ufs/ufs/dinode.h>
53 #include <ufs/ufs/ufs_bswap.h>
54 #include <ufs/ufs/ufs_wapbl.h>
55 #include <ufs/ufs/quota.h>
56 #include <ufs/ffs/fs.h>
57 #include <ufs/ffs/ffs_extern.h>
58 
59 #include <err.h>
60 #include <errno.h>
61 #include <fcntl.h>
62 #include <fstab.h>
63 #include <stdio.h>
64 #include <stdlib.h>
65 #include <string.h>
66 #include <stddef.h>
67 #include <unistd.h>
68 #include <util.h>
69 
70 static union fsun {
71           struct fs fs;
72           char pad[MAXBSIZE];
73 } fsun;
74 #define   afs       fsun.fs
75 
76 static uint16_t opostblsave[32*8];
77 
78 static union {
79           struct cg cg;
80           char pad[MAXBSIZE];
81 } cgun;
82 #define   acg       cgun.cg
83 
84 static union {
85           struct wapbl_wc_header wh;
86           struct wapbl_wc_null wn;
87           char pad[MAXBSIZE];
88 } jbuf;
89 #define awh         jbuf.wh
90 #define awn         jbuf.wn
91 
92 #define OPT_FLAG(ch)          (1 << ((ch) & 31))
93 #define ISOPT(opt)  (opt_flags & (opt))
94 #define opt_alt_super         OPT_FLAG('a')
95 #define opt_superblock        OPT_FLAG('s')
96 #define opt_cg_summary        OPT_FLAG('m')
97 #define opt_cg_info OPT_FLAG('c')
98 #define opt_inodes  OPT_FLAG('i')
99 #define opt_journal OPT_FLAG('j')
100 #define opt_verbose OPT_FLAG('v')
101 #define DFLT_CHECK (opt_alt_super | opt_cg_info | opt_inodes | \
102     opt_cg_summary | opt_superblock | opt_journal )
103 #define DFLT_OPTS   (opt_superblock | opt_cg_summary | opt_cg_info | opt_verbose)
104 
105 static long         dev_bsize = 512;
106 static int          needswap, printold, is_ufs2;
107 static int          Fflag;
108 
109 static uint         opt_flags;
110 
111 static int          dumpfs(const char *);
112 static int          print_superblock(struct fs *, uint16_t *, const char *, int, off_t);
113 static int          print_cgsum(const char *, int);
114 static int          print_cginfo(const char *, int);
115 static int          print_inodes(const char *, int, int, int);
116 static int          print_alt_super(const char *, int);
117 static int          print_journal(const char *, int);
118 static void         print_journal_header(const char *);
119 static off_t        print_journal_entries(const char *, size_t);
120 static int          dumpcg(const char *, int, int);
121 static int          openpartition(const char *, int, char *, size_t);
122 static void         pbits(int, void *, int);
123 __dead static void  usage(void);
124 static void         print_ufs1_inode(int, int, void *);
125 static void         print_ufs2_inode(int, int, void *);
126 static void         fix_superblock(struct fs *, uint16_t *);
127 
128 int
main(int argc,char * argv[])129 main(int argc, char *argv[])
130 {
131           int ch, eval;
132 
133           while ((ch = getopt(argc, argv, "acijmsvF")) != -1)
134                     switch(ch) {
135                     case 'a': /* alternate superblocks */
136                     case 'c': /* cylinder group info */
137                     case 'i': /* actual inodes */
138                     case 'j': /* journal */
139                     case 'm': /* cylinder group summary */
140                     case 's': /* superblock */
141                     case 'v': /* more verbose */
142                               opt_flags |= OPT_FLAG(ch);
143                               break;
144                     case 'F': /* File (not device) */
145                               Fflag = 1;
146                               break;
147                     case '?':
148                     default:
149                               usage();
150                     }
151           argc -= optind;
152           argv += optind;
153 
154           if ((opt_flags & DFLT_CHECK) == 0)
155                     opt_flags |= DFLT_OPTS;
156 
157           if (argc < 1)
158                     usage();
159 
160           for (eval = 0; *argv; ++argv) {
161                     eval |= dumpfs(*argv);
162           }
163 
164           exit(eval);
165 }
166 
167 
168 static int
dumpfs(const char * name)169 dumpfs(const char *name)
170 {
171           static const off_t sblock_try[] = SBLOCKSEARCH;
172           char device[MAXPATHLEN];
173           int fd, i;
174           int rval = 1;
175 
176           if (Fflag)
177                     fd = open(name, O_RDONLY);
178           else {
179                     fd = openpartition(name, O_RDONLY, device, sizeof(device));
180                     name = device;
181           }
182           if (fd == -1)
183                     goto err;
184 
185           for (i = 0; ; i++) {
186                     if (sblock_try[i] == -1) {
187                               warnx("%s: could not find superblock, skipped", name);
188                               return 1;
189                     }
190                     if (lseek(fd, sblock_try[i], SEEK_SET) == (off_t)-1)
191                               continue;
192                     if (read(fd, &afs, SBLOCKSIZE) != SBLOCKSIZE)
193                               continue;
194                     switch(afs.fs_magic) {
195                     case FS_UFS2EA_MAGIC:
196                     case FS_UFS2_MAGIC:
197                               is_ufs2 = 1;
198                               break;
199                     case FS_UFS1_MAGIC:
200                               break;
201                     case FS_UFS2EA_MAGIC_SWAPPED:
202                     case FS_UFS2_MAGIC_SWAPPED:
203                               is_ufs2 = 1;
204                               needswap = 1;
205                               break;
206                     case FS_UFS1_MAGIC_SWAPPED:
207                               needswap = 1;
208                               break;
209                     default:
210                               continue;
211                     }
212                     fix_superblock(&afs, opostblsave);
213                     if (printold) {
214                               if (sblock_try[i] == SBLOCK_UFS2)
215                                         /* This might be an alternate superblock */
216                                         continue;
217                     } else {
218                               if (sblock_try[i] != afs.fs_sblockloc)
219                                         /* This must be an alternate superblock */
220                                         continue;
221                     }
222                     break;
223           }
224 
225 
226           dev_bsize = afs.fs_fsize / FFS_FSBTODB(&afs, 1);
227 
228           rval = 0;
229           printf("file system: %s\n", name);
230 
231           if (ISOPT(opt_superblock))
232                     rval = print_superblock(&afs, opostblsave, name, fd, sblock_try[i]);
233           if (rval == 0 && ISOPT(opt_cg_summary))
234                     rval = print_cgsum(name, fd);
235           if (rval == 0 && ISOPT(opt_alt_super))
236                     rval = print_alt_super(name, fd);
237           if (rval == 0 && ISOPT(opt_journal))
238                     rval = print_journal(name, fd);
239           if (rval == 0 && ISOPT(opt_cg_info))
240                     rval = print_cginfo(name, fd);
241           else if (rval == 0 && ISOPT(opt_inodes))
242                     rval = print_inodes(name, fd, 0, afs.fs_ncg);
243 
244     err:
245           if (fd != -1)
246                     (void)close(fd);
247           if (rval)
248                     warn("%s", name);
249           return rval;
250 }
251 
252 static void
fix_superblock(struct fs * fs,uint16_t * opostbl)253 fix_superblock(struct fs *fs, uint16_t *opostbl)
254 {
255           if (needswap &&
256               (((int32_t)bswap32(fs->fs_old_postblformat) == FS_42POSTBLFMT) ||
257                (bswap32(fs->fs_old_postbloff) == offsetof(struct fs, fs_old_postbl_start)))) {
258                     int i;
259                     memcpy(opostbl, &fs->fs_old_postbl_start, 512);
260                     for(i=0;i<256;i++)
261                               opostbl[i] = bswap16(opostbl[i]);
262           } else if (!needswap &&
263              ((fs->fs_old_postblformat == FS_42POSTBLFMT) ||
264               (fs->fs_old_postbloff == offsetof(struct fs, fs_old_postbl_start)))) {
265                     memcpy(opostbl, &fs->fs_old_postbl_start, 512);
266           }
267 
268           if (needswap)
269                     ffs_sb_swap(fs, fs);
270 
271           printold = (fs->fs_magic == FS_UFS1_MAGIC &&
272                         (fs->fs_old_flags & FS_FLAGS_UPDATED) == 0);
273           if (printold) {
274                     fs->fs_sblockloc = SBLOCK_UFS1;
275                     fs->fs_flags = fs->fs_old_flags;
276                     fs->fs_maxbsize = fs->fs_bsize;
277                     fs->fs_time = fs->fs_old_time;
278                     fs->fs_size = fs->fs_old_size;
279                     fs->fs_dsize = fs->fs_old_dsize;
280                     fs->fs_csaddr = fs->fs_old_csaddr;
281                     fs->fs_cstotal.cs_ndir = fs->fs_old_cstotal.cs_ndir;
282                     fs->fs_cstotal.cs_nbfree = fs->fs_old_cstotal.cs_nbfree;
283                     fs->fs_cstotal.cs_nifree = fs->fs_old_cstotal.cs_nifree;
284                     fs->fs_cstotal.cs_nffree = fs->fs_old_cstotal.cs_nffree;
285           }
286 
287           if (printold && fs->fs_old_postblformat == FS_42POSTBLFMT)
288                     fs->fs_old_nrpos = 8;
289 }
290 
291 static int
print_superblock(struct fs * fs,uint16_t * opostbl,const char * name,int fd,off_t sblock)292 print_superblock(struct fs *fs, uint16_t *opostbl,
293     const char *name, int fd, off_t sblock)
294 {
295           int i, size;
296           time_t t;
297           int32_t fsflags;
298 
299           printf("format\tFFSv%d%s\n", is_ufs2+1,
300                  fs->fs_magic == FS_UFS2EA_MAGIC ? "ea" : "");
301 #if BYTE_ORDER == LITTLE_ENDIAN
302           if (needswap)
303 #else
304           if (!needswap)
305 #endif
306                     printf("endian\tbig-endian\n");
307           else
308                     printf("endian\tlittle-endian\n");
309           t = fs->fs_time;
310           if ((sblock != SBLOCK_UFS1) || ISOPT(opt_alt_super))
311                     printf("location %lld\t(-b %lld)\n",
312                         (long long)sblock, (long long)(sblock/dev_bsize));
313           printf("magic\t%-8x\ttime\t%s",
314               fs->fs_magic, ctime(&t));
315 
316           if (is_ufs2)
317                     i = -1;
318           else {
319                     i = 0;
320                     if (fs->fs_old_postblformat != FS_42POSTBLFMT) {
321                               i++;
322                               if (fs->fs_old_inodefmt >= FS_44INODEFMT) {
323                                         int max;
324 
325                                         i++;
326                                         max = fs->fs_maxcontig;
327                                         size = fs->fs_contigsumsize;
328                                         if ((max < 2 && size == 0)
329                                             || (max > 1 && size >= MIN(max, FS_MAXCONTIG)))
330                                                   i++;
331                               }
332                               if (fs->fs_old_flags & FS_FLAGS_UPDATED) {
333                                         i = 4;
334                               }
335                     }
336           }
337           if (!printold || fs->fs_sblockloc != SBLOCK_UFS1 ||
338               fs->fs_id[0] || fs->fs_id[1])
339                     printf("superblock location\t%jd\tid\t[ %x %x ]\n",
340                         (intmax_t)fs->fs_sblockloc, fs->fs_id[0], fs->fs_id[1]);
341           if (!is_ufs2)
342                     printf("cylgrp\t%s\tinodes\t%s\tsblock\t%s\tfslevel %d\n",
343                         i < 1 ? "static" : "dynamic",
344                         i < 2 ? "4.2/4.3BSD" : i < 5 ? "4.4BSD" : "FFSv2",
345                         i < 4 ? "FFSv1" : "FFSv2", i);
346           printf("nbfree\t%lld\tndir\t%lld\tnifree\t%lld\tnffree\t%lld\n",
347               (long long)fs->fs_cstotal.cs_nbfree,
348               (long long)fs->fs_cstotal.cs_ndir,
349               (long long)fs->fs_cstotal.cs_nifree,
350               (long long)fs->fs_cstotal.cs_nffree);
351           if (printold)
352                     printf("ncg\t%d\tncyl\t%d\tsize\t%lld\tblocks\t%lld\n",
353                         fs->fs_ncg, fs->fs_old_ncyl, (long long)fs->fs_size, (long long)fs->fs_dsize);
354           else
355                     printf("ncg\t%d\tsize\t%lld\tblocks\t%lld\n",
356                         fs->fs_ncg, (long long)fs->fs_size, (long long)fs->fs_dsize);
357           printf("bsize\t%d\tshift\t%d\tmask\t0x%08x\n",
358               fs->fs_bsize, fs->fs_bshift, fs->fs_bmask);
359           printf("fsize\t%d\tshift\t%d\tmask\t0x%08x\n",
360               fs->fs_fsize, fs->fs_fshift, fs->fs_fmask);
361           printf("frag\t%d\tshift\t%d\tfsbtodb\t%d\n",
362               fs->fs_frag, fs->fs_fragshift, fs->fs_fsbtodb);
363           if (printold)
364                     printf("cpg\t%d\t", fs->fs_old_cpg);
365           printf("bpg\t%d\tfpg\t%d\tipg\t%d\n",
366               fs->fs_fpg / fs->fs_frag, fs->fs_fpg, fs->fs_ipg);
367           printf("minfree\t%d%%\toptim\t%s\tmaxcontig %d\tmaxbpg\t%d\n",
368               fs->fs_minfree, fs->fs_optim == FS_OPTSPACE ? "space" : "time",
369               fs->fs_maxcontig, fs->fs_maxbpg);
370           if (printold) {
371                     printf("rotdelay %dms\theadswitch %dus\ttrackseek %dus\trps\t%d\n",
372                         fs->fs_old_rotdelay, fs->fs_old_headswitch,
373                         fs->fs_old_trkseek, fs->fs_old_rps);
374                     printf("ntrak\t%d\tnsect\t%d\tnpsect\t%d\tspc\t%d\n",
375                         fs->fs_spare2, fs->fs_old_nsect, fs->fs_old_npsect,
376                         fs->fs_old_spc);
377           }
378           printf("symlinklen %d\t", fs->fs_maxsymlinklen);
379           if (printold)
380                     printf("trackskew %d\tinterleave %d\t",
381                         fs->fs_old_trackskew, fs->fs_old_interleave);
382           printf("contigsumsize %d\n", fs->fs_contigsumsize);
383           printf("maxfilesize 0x%016llx\n",
384               (unsigned long long)fs->fs_maxfilesize);
385           if (printold)
386                     printf("nindir\t%d\tinopb\t%d\tnspf\t%d\n", fs->fs_nindir,
387                         fs->fs_inopb, fs->fs_old_nspf);
388           else
389                     printf("nindir\t%d\tinopb\t%d\n", fs->fs_nindir, fs->fs_inopb);
390           if (!printold || (fs->fs_avgfilesize > 0) || (fs->fs_avgfpdir > 0))
391                     printf("avgfilesize %d\tavgfpdir %d\n",
392                         fs->fs_avgfilesize, fs->fs_avgfpdir);
393           printf("sblkno\t%d\tcblkno\t%d\tiblkno\t%d\tdblkno\t%d\n",
394               fs->fs_sblkno, fs->fs_cblkno, fs->fs_iblkno, fs->fs_dblkno);
395           printf("sbsize\t%d\tcgsize\t%d", fs->fs_sbsize, fs->fs_cgsize);
396           if (printold)
397                     printf("\toffset\t%d\tmask\t0x%08x",
398                         fs->fs_old_cgoffset, fs->fs_old_cgmask);
399           printf("\ncsaddr\t%lld\tcssize\t%d",
400               (long long)fs->fs_csaddr, fs->fs_cssize);
401           if (printold)
402                     printf("\tshift\t%d\tmask\t0x%08x",
403                         fs->fs_old_csshift, fs->fs_old_csmask);
404           printf("\ncgrotor\t%d\tfmod\t%d\tronly\t%d\tclean\t0x%02x\n",
405               fs->fs_cgrotor, fs->fs_fmod, fs->fs_ronly, fs->fs_clean);
406           printf("wapbl version 0x%x\tlocation %u\tflags 0x%x\n",
407               fs->fs_journal_version, fs->fs_journal_location,
408               fs->fs_journal_flags);
409           printf("wapbl loc0 %" PRIu64 "\tloc1 %" PRIu64,
410               fs->fs_journallocs[0], fs->fs_journallocs[1]);
411           printf("\tloc2 %" PRIu64 "\tloc3 %" PRIu64 "\n",
412               fs->fs_journallocs[2], fs->fs_journallocs[3]);
413           printf("snapshot inodes");
414           for (int s = 0; s < FSMAXSNAP; s++) {
415                     printf(" %u", fs->fs_snapinum[s]);
416           }
417           printf("\n");
418           printf("usrquota %" PRIu64 "\tgrpquota %" PRIu64 "\n",
419                     fs->fs_quotafile[USRQUOTA], fs->fs_quotafile[GRPQUOTA]);
420           printf("flags\t");
421           if (fs->fs_flags == 0)
422                     printf("none");
423           if (fs->fs_flags & FS_UNCLEAN)
424                     printf("unclean ");
425           if (fs->fs_flags & FS_DOSOFTDEP)
426                     printf("soft-updates ");
427           if (fs->fs_flags & FS_NEEDSFSCK)
428                     printf("needs fsck run ");
429           if (fs->fs_flags & FS_SUJ)
430                     printf("journaled soft-updates ");
431           if (fs->fs_flags & FS_POSIX1EACLS)
432                     printf("posix1e acls ");
433           if (fs->fs_flags & FS_NFS4ACLS)
434                     printf("nfs4 acls ");
435           if (fs->fs_flags & FS_MULTILABEL)
436                     printf("multilabel ");
437           if (fs->fs_flags & FS_GJOURNAL)
438                     printf("gjournal ");
439           if (fs->fs_flags & FS_FLAGS_UPDATED)
440                     printf("fs_flags expanded ");
441           if (fs->fs_flags & FS_DOWAPBL)
442                     printf("wapbl ");
443           if (fs->fs_flags & FS_DOQUOTA2)
444                     printf("quotas ");
445           if (fs->fs_flags & FS_TRIM)
446                     printf("trim ");
447           fsflags = fs->fs_flags & ~(FS_UNCLEAN | FS_DOSOFTDEP | FS_NEEDSFSCK |
448                               FS_SUJ | FS_POSIX1EACLS | FS_MULTILABEL | FS_GJOURNAL |
449                               FS_NFS4ACLS | FS_FLAGS_UPDATED | FS_DOWAPBL |
450                               FS_DOQUOTA2 | FS_TRIM);
451 #ifdef FS_INDEXDIRS
452           if (fs->fs_flags & FS_INDEXDIRS)
453                     printf("indexed directories ");
454           fsflags &= ~FS_INDEXDIRS
455 #endif
456           if (fsflags != 0)
457                     printf("unknown flags (%#x)", fsflags);
458           printf("\nfsmnt\t%s\n", fs->fs_fsmnt);
459           if (!printold) {
460                     printf("volname\t%s\tswuid\t%ju\n",
461                         fs->fs_volname, (uintmax_t)fs->fs_swuid);
462                     return 0;
463           }
464 
465           if (fs->fs_old_cpc != 0)
466                     printf("blocks available in each of %d rotational "
467                            "positions\n", fs->fs_old_nrpos);
468           else
469                     printf("(no rotational position table)\n\n");
470 
471           if (!ISOPT(opt_verbose)) {
472                     return 0;
473           }
474 
475           for (int c = 0; c < fs->fs_old_cpc; c++) {
476                     printf("cylinder number %d:", c);
477                     for (i = 0; i < fs->fs_old_nrpos; i++) {
478                               if (old_fs_postbl(&afs, c, opostbl)[i] == -1)
479                                         continue;
480                               printf("\n   position %d:\t", i);
481                               for (int j = old_fs_postbl(&afs, c, opostbl)[i], k = 1;
482                                   ; j += old_fs_rotbl(&afs)[j], k++) {
483                                         printf("%5d", j);
484                                         if (k % 12 == 0)
485                                                   printf("\n\t\t");
486                                         if (old_fs_rotbl(&afs)[j] == 0)
487                                                   break;
488                               }
489                     }
490                     printf("\n");
491           }
492 
493           return 0;
494 }
495 
496 static int
print_cgsum(const char * name,int fd)497 print_cgsum(const char *name, int fd)
498 {
499           struct csum *ccsp;
500           int i, j, size;
501           uint32_t cgnum;
502 
503           afs.fs_csp = calloc(1, afs.fs_cssize);
504           for (i = 0, j = 0; i < afs.fs_cssize; i += afs.fs_bsize, j++) {
505                     size = afs.fs_cssize - i < afs.fs_bsize ?
506                         afs.fs_cssize - i : afs.fs_bsize;
507                     ccsp = (struct csum *)((char *)afs.fs_csp + i);
508                     if (lseek(fd,
509                         (off_t)(FFS_FSBTODB(&afs, (afs.fs_csaddr + j * afs.fs_frag))) *
510                         dev_bsize, SEEK_SET) == (off_t)-1)
511                               return 1;
512                     if (read(fd, ccsp, size) != size)
513                               return 1;
514                     if (needswap)
515                               ffs_csum_swap(ccsp, ccsp, size);
516           }
517 
518           printf("cs[].cs_(nbfree,ndir,nifree,nffree):\n\t");
519           for (cgnum = 0; cgnum < afs.fs_ncg; cgnum++) {
520                     struct csum *cs = &afs.fs_cs(&afs, cgnum);
521                     if (i && i % 4 == 0)
522                               printf("\n\t");
523                     printf("(%d,%d,%d,%d) ",
524                         cs->cs_nbfree, cs->cs_ndir, cs->cs_nifree, cs->cs_nffree);
525           }
526           printf("\n");
527           if (printold && (afs.fs_old_ncyl % afs.fs_old_cpg)) {
528                     printf("cylinders in last group %d\n",
529                         i = afs.fs_old_ncyl % afs.fs_old_cpg);
530                     printf("blocks in last group %d\n",
531                         i * afs.fs_old_spc / (afs.fs_old_nspf << afs.fs_fragshift));
532           }
533           free(afs.fs_csp);
534           afs.fs_csp = NULL;
535 
536           return 0;
537 }
538 
539 static int
print_alt_super(const char * name,int fd)540 print_alt_super(const char *name, int fd)
541 {
542           union fsun alt;
543           uint32_t i;
544           off_t loc;
545           uint16_t alt_opostblsave[32*8];
546           int save_printold;
547 
548           for (i = 0; i < afs.fs_ncg; i++) {
549                     loc = (off_t)(FFS_FSBTODB(&afs, cgsblock(&afs, i))) * dev_bsize;
550                     printf("\nalternate %d\n", i);
551                     if (pread(fd, &alt, sizeof alt, loc) != sizeof alt) {
552                               warnx("%s: error reading alt %d", name, i);
553                               return (1);
554                     }
555                     save_printold = printold;
556                     fix_superblock(&alt.fs, alt_opostblsave);
557                     if (print_superblock(&alt.fs, alt_opostblsave, name, fd, loc)) {
558                               printold = save_printold;
559                               return 1;
560                     }
561                     printold = save_printold;
562           }
563           return 0;
564 }
565 
566 static int
print_cginfo(const char * name,int fd)567 print_cginfo(const char *name, int fd)
568 {
569           uint32_t i;
570 
571           printf("\n");
572           for (i = 0; i < afs.fs_ncg; i++) {
573                     printf("\n");
574                     if (dumpcg(name, fd, i))
575                               return 1;
576                     if (ISOPT(opt_inodes) && print_inodes(name, fd, i, 1))
577                               return 1;
578           }
579           return 0;
580 }
581 
582 static int
print_inodes(const char * name,int fd,int c,int n)583 print_inodes(const char *name, int fd, int c, int n)
584 {
585           void *ino_buf = malloc(afs.fs_bsize);
586           void (*print_inode)(int, int, void *);
587           ino_t inum;
588           uint32_t i;
589 
590           if (ino_buf == 0)
591                     return 1;
592 
593           print_inode = is_ufs2 ? print_ufs2_inode : print_ufs1_inode;
594 
595           for (inum = c * afs.fs_ipg ; inum < (c+n) * afs.fs_ipg; inum += afs.fs_inopb) {
596                     if (pread(fd, ino_buf, afs.fs_bsize,
597                         ino_to_fsba(&afs, inum) * afs.fs_fsize) != afs.fs_bsize) {
598                               free(ino_buf);
599                               return 1;
600                     }
601                     for (i = 0; i < afs.fs_inopb; i++)
602                               print_inode(inum + i, i, ino_buf);
603           }
604 
605           free(ino_buf);
606           return 0;
607 }
608 
609 static int
dumpcg(const char * name,int fd,int c)610 dumpcg(const char *name, int fd, int c)
611 {
612           off_t cur;
613           int i, j;
614           time_t t;
615 
616           printf("cg %d:\n", c);
617           if ((cur = lseek(fd, (off_t)(FFS_FSBTODB(&afs, cgtod(&afs, c))) * dev_bsize,
618               SEEK_SET)) == (off_t)-1)
619                     return (1);
620           if (read(fd, &acg, afs.fs_bsize) != afs.fs_bsize) {
621                     warnx("%s: error reading cg", name);
622                     return (1);
623           }
624           if (needswap)
625                     ffs_cg_swap(&acg, &acg, &afs);
626           if (printold)
627                     t = acg.cg_old_time;
628           else
629                     t = acg.cg_time;
630           printf("magic\t%x\ttell\t%llx\ttime\t%s",
631               afs.fs_old_postblformat == FS_42POSTBLFMT ?
632               ((struct ocg *)&acg)->cg_magic : acg.cg_magic,
633               (long long)cur, ctime(&t));
634           if (printold)
635                     printf("cgx\t%d\tncyl\t%d\tniblk\t%d\tndblk\t%d\n",
636                         acg.cg_cgx, acg.cg_old_ncyl, acg.cg_old_niblk,
637                         acg.cg_ndblk);
638           else
639                     printf("cgx\t%d\tniblk\t%d\tndblk\t%d\n",
640                         acg.cg_cgx, acg.cg_niblk, acg.cg_ndblk);
641           printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n",
642               acg.cg_cs.cs_nbfree, acg.cg_cs.cs_ndir,
643               acg.cg_cs.cs_nifree, acg.cg_cs.cs_nffree);
644           printf("rotor\t%d\tirotor\t%d\tfrotor\t%d\nfrsum",
645               acg.cg_rotor, acg.cg_irotor, acg.cg_frotor);
646           for (i = 1, j = 0; i < afs.fs_frag; i++) {
647                     printf("\t%d", acg.cg_frsum[i]);
648                     j += i * acg.cg_frsum[i];
649           }
650           printf("\nsum of frsum: %d", j);
651           if (afs.fs_contigsumsize > 0) {
652                     for (i = 1; i < afs.fs_contigsumsize; i++) {
653                               if ((i - 1) % 8 == 0)
654                                         printf("\nclusters %d-%d:", i,
655                                             afs.fs_contigsumsize - 1 < i + 7 ?
656                                             afs.fs_contigsumsize - 1 : i + 7);
657                               printf("\t%d", cg_clustersum(&acg, 0)[i]);
658                     }
659                     printf("\nclusters size %d and over: %d\n",
660                         afs.fs_contigsumsize,
661                         cg_clustersum(&acg, 0)[afs.fs_contigsumsize]);
662                     printf("clusters free:\t");
663                     pbits(0, cg_clustersfree(&acg, 0), acg.cg_nclusterblks);
664           } else
665                     printf("\n");
666           printf("iused:\t");
667           pbits(0 * c * afs.fs_ipg, cg_inosused(&acg, 0), afs.fs_ipg);
668           printf("free:\t");
669           pbits(0, cg_blksfree(&acg, 0), afs.fs_fpg);
670           if (printold && ISOPT(opt_verbose)) {
671                     printf("b:\n");
672                     for (i = 0; i < afs.fs_old_cpg; i++) {
673                               if (old_cg_blktot(&acg, 0)[i] == 0)
674                                         continue;
675                               printf("   c%d:\t(%d)\t", i, old_cg_blktot(&acg, 0)[i]);
676                               for (j = 0; j < afs.fs_old_nrpos; j++) {
677                                         if (afs.fs_old_cpc > 0 &&
678                                                             old_fs_postbl(&afs, i % afs.fs_old_cpc, opostblsave)[j] == -1)
679                                                   continue;
680                                         printf(" %d", old_cg_blks(&afs, &acg, i, 0)[j]);
681                               }
682                               printf("\n");
683                     }
684           }
685           return (0);
686 }
687 
688 static void
print_ufs1_inode(int inum,int i_off,void * ibuf)689 print_ufs1_inode(int inum, int i_off, void *ibuf)
690 {
691           struct ufs1_dinode *i = ibuf;
692 
693           i += i_off;
694 
695           if (needswap)
696                     ffs_dinode1_swap(i,i);
697 
698           if (afs.fs_old_inodefmt < FS_44INODEFMT) {
699                     i->di_uid = i->di_ouid;
700                     i->di_gid = i->di_ogid;
701           }
702 
703           if (inum % afs.fs_ipg == 0)
704                     printf("   inode:   mode  nlink                 size"
705                         "      ctime.nsec         flags     blocks"
706                         " generation      uid        gid\n");
707           if (i->di_mode == 0 && i->di_nlink == 0 && !ISOPT(opt_verbose))
708                     return;
709           printf("%8u: %6o %6d %20" PRIu64 " %10u.%09u %8x %10u %8x %10u %10u\n",
710                     inum, i->di_mode, i->di_nlink, i->di_size,
711                     i->di_ctime, i->di_ctimensec, i->di_flags, i->di_blocks,
712                     i->di_gen, i->di_uid, i->di_gid);
713 }
714 
715 static void
print_ufs2_inode(int inum,int i_off,void * ibuf)716 print_ufs2_inode(int inum, int i_off, void *ibuf)
717 {
718           struct ufs2_dinode *i = ibuf;
719 
720           i += i_off;
721 
722           if (needswap)
723                     ffs_dinode2_swap(i,i);
724 
725           if (inum % afs.fs_ipg == 0)
726                     printf("   inode:   mode  nlink                 size"
727                         "      ctime.nsec         flags     blocks"
728                         " generation      uid        gid\n");
729 
730           if (i->di_mode == 0 && i->di_nlink == 0 && !ISOPT(opt_verbose))
731                     return;
732 
733           printf("%8u: %6o %6d %20" PRIu64 " %10" PRIu64 ".%09u %8x %10" PRIu64 " %8x %10u %10u\n",
734                     inum, i->di_mode, i->di_nlink, i->di_size,
735                     i->di_ctime, i->di_ctimensec, i->di_flags, i->di_blocks,
736                     i->di_gen, i->di_uid, i->di_gid);
737 }
738 
739 static void
pbits(int offset,void * vp,int max)740 pbits(int offset, void *vp, int max)
741 {
742           int i;
743           char *p;
744           int count, j;
745 
746           for (count = i = 0, p = vp; i < max; i++)
747                     if (isset(p, i)) {
748                               if (count)
749                                         printf(",%s", count % 6 ? " " : "\n\t");
750                               count++;
751                               printf("%d", offset + i);
752                               j = i;
753                               while ((i+1)<max && isset(p, i+1))
754                                         i++;
755                               if (i != j)
756                                         printf("-%d", offset + i);
757                     }
758           printf("\n");
759 }
760 
761 static int
print_journal(const char * name,int fd)762 print_journal(const char *name, int fd)
763 {
764           daddr_t off;
765           size_t count, blklen, bno, skip;
766           off_t boff, head, tail, len;
767           uint32_t generation;
768 
769           if (afs.fs_journal_version != UFS_WAPBL_VERSION)
770                     return 0;
771 
772           generation = 0;
773           head = tail = 0;
774 
775           switch (afs.fs_journal_location) {
776           case UFS_WAPBL_JOURNALLOC_END_PARTITION:
777           case UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM:
778 
779                     off    = afs.fs_journallocs[0];
780                     count  = afs.fs_journallocs[1];
781                     blklen = afs.fs_journallocs[2];
782 
783                     for (bno=0; bno<count; bno += skip / blklen) {
784 
785                               skip = blklen;
786 
787                               boff = bno * blklen;
788                               if (bno * blklen >= 2 * blklen &&
789                                 ((head >= tail && (boff < tail || boff >= head)) ||
790                                 (head < tail && (boff >= head && boff < tail))))
791                                         continue;
792 
793                               printf("journal block %lu offset %lld\n",
794                                         (unsigned long)bno, (long long) boff);
795 
796                               if (lseek(fd, (off_t)(off*blklen) + boff, SEEK_SET)
797                                   == (off_t)-1)
798                                         return (1);
799                               if (read(fd, &jbuf, blklen) != (ssize_t)blklen) {
800                                         warnx("%s: error reading journal", name);
801                                         return 1;
802                               }
803 
804                               switch (awh.wc_type) {
805                               case 0:
806                                         break;
807                               case WAPBL_WC_HEADER:
808                                         print_journal_header(name);
809                                         if (awh.wc_generation > generation) {
810                                                   head = awh.wc_head;
811                                                   tail = awh.wc_tail;
812                                         }
813                                         generation = awh.wc_generation;
814                                         skip = awh.wc_len;
815                                         break;
816                               default:
817                                         len = print_journal_entries(name, blklen);
818                                         skip = awh.wc_len;
819                                         if (len != (off_t)skip)
820                                                   printf("  CORRUPTED RECORD\n");
821                                         break;
822                               }
823 
824                               if (blklen == 0)
825                                         break;
826 
827                               skip = (skip + blklen - 1) / blklen * blklen;
828                               if (skip == 0)
829                                         break;
830 
831                     }
832                     break;
833           }
834 
835           return 0;
836 }
837 
838 static const char *
wapbl_type_string(unsigned t)839 wapbl_type_string(unsigned t)
840 {
841           static char buf[12];
842 
843           switch (t) {
844           case WAPBL_WC_BLOCKS:
845                     return "blocks";
846           case WAPBL_WC_REVOCATIONS:
847                     return "revocations";
848           case WAPBL_WC_INODES:
849                     return "inodes";
850           case WAPBL_WC_HEADER:
851                     return "header";
852           }
853 
854           snprintf(buf,sizeof(buf),"%08x",t);
855           return buf;
856 }
857 
858 static void
print_journal_header(const char * name)859 print_journal_header(const char *name)
860 {
861           printf("  type %s len %d  version %u\n",
862                     wapbl_type_string(awh.wc_type), awh.wc_len,
863                     awh.wc_version);
864           printf("  checksum      %08x  generation %9u\n",
865                     awh.wc_checksum, awh.wc_generation);
866           printf("  fsid %08x.%08x  time %llu nsec %u\n",
867                     awh.wc_fsid[0], awh.wc_fsid[1],
868                     (unsigned long long)awh.wc_time, awh.wc_timensec);
869           printf("  log_bshift  %10u  fs_bshift %10u\n",
870                     awh.wc_log_dev_bshift, awh.wc_fs_dev_bshift);
871           printf("  head        %10lld  tail      %10lld\n",
872                     (long long)awh.wc_head, (long long)awh.wc_tail);
873           printf("  circ_off    %10lld  circ_size %10lld\n",
874                     (long long)awh.wc_circ_off, (long long)awh.wc_circ_size);
875 }
876 
877 static off_t
print_journal_entries(const char * name,size_t blklen)878 print_journal_entries(const char *name, size_t blklen)
879 {
880           int i, n;
881           struct wapbl_wc_blocklist *wcb;
882           struct wapbl_wc_inodelist *wci;
883           off_t len = 0;
884           int ph;
885 
886           printf("  type %s len %d",
887                     wapbl_type_string(awn.wc_type), awn.wc_len);
888 
889           switch (awn.wc_type) {
890           case WAPBL_WC_BLOCKS:
891           case WAPBL_WC_REVOCATIONS:
892                     wcb = (struct wapbl_wc_blocklist *)&awn;
893                     printf("  blkcount %u\n", wcb->wc_blkcount);
894                     ph = (blklen - offsetof(struct wapbl_wc_blocklist, wc_blocks))
895                               / sizeof(wcb->wc_blocks[0]);
896                     n = MIN(wcb->wc_blkcount, ph);
897                     for (i=0; i<n; i++) {
898                               if (ISOPT(opt_verbose)) {
899                                         printf("  %3d: daddr %14llu  dlen %d\n", i,
900                                          (unsigned long long)wcb->wc_blocks[i].wc_daddr,
901                                          wcb->wc_blocks[i].wc_dlen);
902                               }
903                               len += wcb->wc_blocks[i].wc_dlen;
904                     }
905                     if (awn.wc_type == WAPBL_WC_BLOCKS) {
906                               if (len % blklen)
907                                         len += blklen - len % blklen;
908                     } else
909                               len = 0;
910                     break;
911           case WAPBL_WC_INODES:
912                     wci = (struct wapbl_wc_inodelist *)&awn;
913                     printf("  count %u clear %u\n",
914                               wci->wc_inocnt, wci->wc_clear);
915                     ph = (blklen - offsetof(struct wapbl_wc_inodelist, wc_inodes))
916                               / sizeof(wci->wc_inodes[0]);
917                     n = MIN(wci->wc_inocnt, ph);
918                     for (i=0; i<n; ++i) {
919                               if (ISOPT(opt_verbose)) {
920                                         printf("  %3d: inumber %10u  imode %08x\n", i,
921                                                   wci->wc_inodes[i].wc_inumber,
922                                                   wci->wc_inodes[i].wc_imode);
923                               }
924                     }
925                     break;
926           default:
927                     printf("\n");
928                     break;
929           }
930 
931           return len + blklen;
932 }
933 
934 static void
usage(void)935 usage(void)
936 {
937 
938           (void)fprintf(stderr, "usage: dumpfs [-acFijmsv] filesys | device [...]\n");
939           exit(1);
940 }
941 
942 static int
openpartition(const char * name,int flags,char * device,size_t devicelen)943 openpartition(const char *name, int flags, char *device, size_t devicelen)
944 {
945           char                rawspec[MAXPATHLEN], xbuf[MAXPATHLEN], *p;
946           struct fstab        *fs;
947           int                 fd, oerrno;
948 
949           fs = getfsfile(name);
950           if (fs) {
951                     const char *fsspec;
952                     fsspec = getfsspecname(xbuf, sizeof(xbuf), fs->fs_spec);
953                     if (fsspec == NULL) {
954                               warn("%s", xbuf);
955                               return -1;
956                     }
957                     if ((p = strrchr(fsspec, '/')) != NULL) {
958                               snprintf(rawspec, sizeof(rawspec), "%.*s/r%s",
959                                   (int)(p - fsspec), fsspec, p + 1);
960                               name = rawspec;
961                     } else
962                               name = fsspec;
963           }
964           fd = opendisk(name, flags, device, devicelen, 0);
965           if (fd == -1 && errno == ENOENT) {
966                     oerrno = errno;
967                     strlcpy(device, name, devicelen);
968                     errno = oerrno;
969           }
970           return (fd);
971 }
972