sbin/dumpfs/dumpfs.c

   1 /*
   2  * Copyright (c) 2002 Networks Associates Technology, Inc.
   3  * All rights reserved.
   4  *
   5  * This software was developed for the FreeBSD Project by Marshall
   6  * Kirk McKusick and Network Associates Laboratories, the Security
   7  * Research Division of Network Associates, Inc. under DARPA/SPAWAR
   8  * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
   9  * research program
  10  *
  11  * Copyright (c) 1982, 1989, 1993
  12  *      The Regents of the University of California.  All rights reserved.
  13  * (c) UNIX System Laboratories, Inc.
  14  * Copyright (c) 1983, 1992, 1993
  15  *      The Regents of the University of California.  All rights reserved.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions
  19  * are met:
  20  * 1. Redistributions of source code must retain the above copyright
  21  *    notice, this list of conditions and the following disclaimer.
  22  * 2. Redistributions in binary form must reproduce the above copyright
  23  *    notice, this list of conditions and the following disclaimer in the
  24  *    documentation and/or other materials provided with the distribution.
  25  * 3. All advertising materials mentioning features or use of this software
  26  *    must display the following acknowledgement:
  27  *      This product includes software developed by the University of
  28  *      California, Berkeley and its contributors.
  29  * 4. Neither the name of the University nor the names of its contributors
  30  *    may be used to endorse or promote products derived from this software
  31  *    without specific prior written permission.
  32  *
  33  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  34  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  35  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  36  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  37  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  38  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  39  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  40  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  41  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  42  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  43  * SUCH DAMAGE.
  44  */
  45
  46 #ifndef lint
  47 static const char copyright[] =
  48 "@(#) Copyright (c) 1983, 1992, 1993\n\
  49         The Regents of the University of California.  All rights reserved.\n";
  50 #endif /* not lint */
  51
  52 #ifndef lint
  53 #if 0
  54 static char sccsid[] = "@(#)dumpfs.c    8.5 (Berkeley) 4/29/95";
  55 #endif
  56 static const char rcsid[] =
  57   "$FreeBSD$";
  58 #endif /* not lint */
  59
  60 #include <sys/param.h>
  61 #include <sys/time.h>
  62 #include <sys/disklabel.h>
  63
  64 #include <ufs/ufs/dinode.h>
  65 #include <ufs/ffs/fs.h>
  66
  67 #include <err.h>
  68 #include <fcntl.h>
  69 #include <fstab.h>
  70 #include <stdio.h>
  71 #include <stdlib.h>
  72 #include <unistd.h>
  73
  74 union {
  75         struct fs fs;
  76         char pad[MAXBSIZE];
  77 } fsun;
  78 #define afs     fsun.fs
  79
  80 union {
  81         struct cg cg;
  82         char pad[MAXBSIZE];
  83 } cgun;
  84 #define acg     cgun.cg
  85
  86 long    dev_bsize = 1;
  87
  88 /*
  89  * Possible superblock locations ordered from most to least likely.
  90  */
  91 static int sblock_try[] = SBLOCKSEARCH;
  92
  93 int     dumpfs(const char *);
  94 int     dumpcg(const char *, int, int);
  95 void    pbits(void *, int);
  96 void    usage(void) __dead2;
  97
  98 int
  99 main(int argc, char *argv[])
 100 {
 101         struct fstab *fs;
 102         int ch, eval;
 103
 104         while ((ch = getopt(argc, argv, "")) != -1)
 105                 switch(ch) {
 106                 case '?':
 107                 default:
 108                         usage();
 109                 }
 110         argc -= optind;
 111         argv += optind;
 112
 113         if (argc < 1)
 114                 usage();
 115
 116         for (eval = 0; *argv; ++argv)
 117                 if ((fs = getfsfile(*argv)) == NULL)
 118                         eval |= dumpfs(*argv);
 119                 else
 120                         eval |= dumpfs(fs->fs_spec);
 121         exit(eval);
 122 }
 123
 124 int
 125 dumpfs(const char *name)
 126 {
 127         ssize_t n;
 128         time_t time;
 129         int64_t fssize;
 130         int fd, c, i, j, k, size;
 131
 132         if ((fd = open(name, O_RDONLY, 0)) < 0)
 133                 goto err;
 134         for (i = 0; sblock_try[i] != -1; i++) {
 135                 if (lseek(fd, (off_t)sblock_try[i], SEEK_SET) == (off_t)-1)
 136                         goto err;
 137                 if ((n = read(fd, &afs, SBLOCKSIZE)) == -1)
 138                         goto err;
 139                 if ((afs.fs_magic == FS_UFS1_MAGIC ||
 140                      (afs.fs_magic == FS_UFS2_MAGIC &&
 141                       afs.fs_sblockloc == numfrags(&afs, sblock_try[i]))) &&
 142                     afs.fs_bsize <= MAXBSIZE &&
 143                     afs.fs_bsize >= sizeof(struct fs))
 144                         break;
 145         }
 146         if (sblock_try[i] == -1) {
 147                 fprintf(stderr, "Cannot find filesystem superblock\n");
 148                 return (1);
 149         }
 150
 151         dev_bsize = afs.fs_fsize / fsbtodb(&afs, 1);
 152         if (afs.fs_magic == FS_UFS2_MAGIC) {
 153                 fssize = afs.fs_size;
 154                 time = afs.fs_time;
 155                 printf("magic\t%x (UFS2)\ttime\t%s",
 156                     afs.fs_magic, ctime(&time));
 157                 printf("offset\t%qd\tid\t[ %x %x ]\n",
 158                     afs.fs_sblockloc, afs.fs_id[0], afs.fs_id[1]);
 159                 printf("ncg\t%d\tsize\t%qd\tblocks\t%d\n",
 160                     afs.fs_ncg, fssize, afs.fs_dsize);
 161         } else {
 162                 fssize = afs.fs_old_size;
 163                 printf("magic\t%x (UFS1)\ttime\t%s",
 164                     afs.fs_magic, ctime(&afs.fs_old_time));
 165                 printf("id\t[ %x %x ]\n", afs.fs_id[0], afs.fs_id[1]);
 166                 printf("ncg\t%d\tsize\t%qd\tblocks\t%d\n",
 167                     afs.fs_ncg, fssize, afs.fs_dsize);
 168         }
 169         printf("bsize\t%d\tshift\t%d\tmask\t0x%08x\n",
 170             afs.fs_bsize, afs.fs_bshift, afs.fs_bmask);
 171         printf("fsize\t%d\tshift\t%d\tmask\t0x%08x\n",
 172             afs.fs_fsize, afs.fs_fshift, afs.fs_fmask);
 173         printf("frag\t%d\tshift\t%d\tfsbtodb\t%d\n",
 174             afs.fs_frag, afs.fs_fragshift, afs.fs_fsbtodb);
 175         printf("minfree\t%d%%\toptim\t%s\tsymlinklen %d\n",
 176             afs.fs_minfree, afs.fs_optim == FS_OPTSPACE ? "space" : "time",
 177             afs.fs_maxsymlinklen);
 178         if (afs.fs_magic == FS_UFS2_MAGIC) {
 179                 printf("%s %d\tmaxbpg\t%d\tmaxcontig %d\tcontigsumsize %d\n",
 180                     "maxbsize", afs.fs_maxbsize, afs.fs_maxbpg,
 181                     afs.fs_maxcontig, afs.fs_contigsumsize);
 182                 printf("nbfree\t%qd\tndir\t%qd\tnifree\t%qd\tnffree\t%qd\n",
 183                     afs.fs_cstotal.cs_nbfree, afs.fs_cstotal.cs_ndir,
 184                     afs.fs_cstotal.cs_nifree, afs.fs_cstotal.cs_nffree);
 185                 printf("bpg\t%d\tfpg\t%d\tipg\t%d\n",
 186                     afs.fs_fpg / afs.fs_frag, afs.fs_fpg, afs.fs_ipg);
 187                 printf("nindir\t%d\tinopb\t%d\tmaxfilesize\t%qu\n",
 188                     afs.fs_nindir, afs.fs_inopb, afs.fs_maxfilesize);
 189                 printf("sbsize\t%d\tcgsize\t%d\tcsaddr\t%d\tcssize\t%d\n",
 190                     afs.fs_sbsize, afs.fs_cgsize, afs.fs_csaddr, afs.fs_cssize);
 191         } else {
 192                 printf("maxbpg\t%d\tmaxcontig %d\tcontigsumsize %d\n",
 193                     afs.fs_maxbpg, afs.fs_maxcontig, afs.fs_contigsumsize);
 194                 printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n",
 195                     afs.fs_old_cstotal.cs_nbfree, afs.fs_old_cstotal.cs_ndir,
 196                     afs.fs_old_cstotal.cs_nifree, afs.fs_old_cstotal.cs_nffree);
 197                 printf("cpg\t%d\tbpg\t%d\tfpg\t%d\tipg\t%d\n",
 198                     afs.fs_old_cpg, afs.fs_fpg / afs.fs_frag, afs.fs_fpg,
 199                     afs.fs_ipg);
 200                 printf("nindir\t%d\tinopb\t%d\tnspf\t%d\tmaxfilesize\t%qu\n",
 201                     afs.fs_nindir, afs.fs_inopb, afs.fs_old_nspf,
 202                     afs.fs_maxfilesize);
 203                 printf("sbsize\t%d\tcgsize\t%d\tcgoffset %d\tcgmask\t0x%08x\n",
 204                     afs.fs_sbsize, afs.fs_cgsize, afs.fs_old_cgoffset,
 205                     afs.fs_old_cgmask);
 206                 printf("csaddr\t%d\tcssize\t%d\n",
 207                     afs.fs_old_csaddr, afs.fs_cssize);
 208                 printf("rotdelay %dms\trps\t%d\ttrackskew %d\tinterleave %d\n",
 209                     afs.fs_old_rotdelay, afs.fs_old_rps, afs.fs_old_trackskew,
 210                     afs.fs_old_interleave);
 211                 printf("nsect\t%d\tnpsect\t%d\tspc\t%d\n",
 212                     afs.fs_old_nsect, afs.fs_old_npsect, afs.fs_old_spc);
 213         }
 214         printf("sblkno\t%d\tcblkno\t%d\tiblkno\t%d\tdblkno\t%d\n",
 215             afs.fs_sblkno, afs.fs_cblkno, afs.fs_iblkno, afs.fs_dblkno);
 216         printf("cgrotor\t%d\tfmod\t%d\tronly\t%d\tclean\t%d\n",
 217             afs.fs_cgrotor, afs.fs_fmod, afs.fs_ronly, afs.fs_clean);
 218         printf("flags\t");
 219         if (afs.fs_flags == 0)
 220                 printf("none");
 221         if (afs.fs_flags & FS_UNCLEAN)
 222                         printf("unclean ");
 223         if (afs.fs_flags & FS_DOSOFTDEP)
 224                         printf("soft-updates ");
 225         if (afs.fs_flags & FS_NEEDSFSCK)
 226                         printf("needs fsck run ");
 227         if (afs.fs_flags & FS_INDEXDIRS)
 228                         printf("indexed directories ");
 229         if ((afs.fs_flags &
 230             ~(FS_UNCLEAN | FS_DOSOFTDEP | FS_NEEDSFSCK | FS_INDEXDIRS)) != 0)
 231                         printf("unknown flags (%#x)", afs.fs_flags &
 232                             ~(FS_UNCLEAN | FS_DOSOFTDEP |
 233                               FS_NEEDSFSCK | FS_INDEXDIRS));
 234         putchar('\n');
 235         printf("\ncs[].cs_(nbfree,ndir,nifree,nffree):\n\t");
 236         afs.fs_csp = calloc(1, afs.fs_cssize);
 237         if (lseek(fd,
 238             (off_t)(fsbtodb(&afs, afs.fs_csaddr)) * (off_t)dev_bsize,
 239             SEEK_SET) == (off_t)-1)
 240                 goto err;
 241         if (read(fd, (char *)afs.fs_csp, afs.fs_cssize) != afs.fs_cssize)
 242                 goto err;
 243         for (i = 0; i < afs.fs_ncg; i++) {
 244                 struct csum *cs = &afs.fs_cs(&afs, i);
 245                 if (i && i % 4 == 0)
 246                         printf("\n\t");
 247                 printf("(%d,%d,%d,%d) ",
 248                     cs->cs_nbfree, cs->cs_ndir, cs->cs_nifree, cs->cs_nffree);
 249         }
 250         printf("\n");
 251         if (fssize % afs.fs_fpg) {
 252                 if (afs.fs_magic == FS_UFS1_MAGIC)
 253                         printf("cylinders in last group %d\n",
 254                             howmany(afs.fs_old_size % afs.fs_fpg,
 255                             afs.fs_old_spc / afs.fs_old_nspf));
 256                 printf("blocks in last group %d\n\n",
 257                     (fssize % afs.fs_fpg) / afs.fs_frag);
 258         }
 259         for (i = 0; i < afs.fs_ncg; i++)
 260                 if (dumpcg(name, fd, i))
 261                         goto err;
 262         (void)close(fd);
 263         return (0);
 264
 265 err:    if (fd != -1)
 266                 (void)close(fd);
 267         warn("%s", name);
 268         return (1);
 269 };
 270
 271 int
 272 dumpcg(const char *name, int fd, int c)
 273 {
 274         time_t time;
 275         off_t cur;
 276         int i, j;
 277
 278         printf("\ncg %d:\n", c);
 279         if ((cur = lseek(fd, (off_t)(fsbtodb(&afs, cgtod(&afs, c))) *
 280             (off_t)dev_bsize, SEEK_SET)) == (off_t)-1)
 281                 return (1);
 282         if (read(fd, &acg, afs.fs_bsize) != afs.fs_bsize) {
 283                 warnx("%s: error reading cg", name);
 284                 return (1);
 285         }
 286         if (afs.fs_magic == FS_UFS2_MAGIC) {
 287                 time = acg.cg_time;
 288                 printf("magic\t%x\ttell\t%qx\ttime\t%s",
 289                     acg.cg_magic, cur, ctime(&time));
 290                 printf("cgx\t%d\tndblk\t%d\tniblk\t%d\tinitiblk %d\n",
 291                     acg.cg_cgx, acg.cg_ndblk, acg.cg_niblk, acg.cg_initediblk);
 292         } else {
 293                 printf("magic\t%x\ttell\t%qx\ttime\t%s",
 294                     acg.cg_magic, cur, ctime(&acg.cg_old_time));
 295                 printf("cgx\t%d\tncyl\t%d\tniblk\t%d\tndblk\t%d\n",
 296                     acg.cg_cgx, acg.cg_old_ncyl, acg.cg_old_niblk,
 297                     acg.cg_ndblk);
 298         }
 299         printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n",
 300             acg.cg_cs.cs_nbfree, acg.cg_cs.cs_ndir,
 301             acg.cg_cs.cs_nifree, acg.cg_cs.cs_nffree);
 302         printf("rotor\t%d\tirotor\t%d\tfrotor\t%d\nfrsum",
 303             acg.cg_rotor, acg.cg_irotor, acg.cg_frotor);
 304         for (i = 1, j = 0; i < afs.fs_frag; i++) {
 305                 printf("\t%d", acg.cg_frsum[i]);
 306                 j += i * acg.cg_frsum[i];
 307         }
 308         printf("\nsum of frsum: %d", j);
 309         if (afs.fs_contigsumsize > 0) {
 310                 for (i = 1; i < afs.fs_contigsumsize; i++) {
 311                         if ((i - 1) % 8 == 0)
 312                                 printf("\nclusters %d-%d:", i,
 313                                     afs.fs_contigsumsize - 1 < i + 7 ?
 314                                     afs.fs_contigsumsize - 1 : i + 7);
 315                         printf("\t%d", cg_clustersum(&acg)[i]);
 316                 }
 317                 printf("\nclusters size %d and over: %d\n",
 318                     afs.fs_contigsumsize,
 319                     cg_clustersum(&acg)[afs.fs_contigsumsize]);
 320                 printf("clusters free:\t");
 321                 pbits(cg_clustersfree(&acg), acg.cg_nclusterblks);
 322         } else
 323                 printf("\n");
 324         printf("inodes used:\t");
 325         pbits(cg_inosused(&acg), afs.fs_ipg);
 326         printf("blks free:\t");
 327         pbits(cg_blksfree(&acg), afs.fs_fpg);
 328         return (0);
 329 };
 330
 331 void
 332 pbits(void *vp, int max)
 333 {
 334         int i;
 335         char *p;
 336         int count, j;
 337
 338         for (count = i = 0, p = vp; i < max; i++)
 339                 if (isset(p, i)) {
 340                         if (count)
 341                                 printf(",%s", count % 6 ? " " : "\n\t");
 342                         count++;
 343                         printf("%d", i);
 344                         j = i;
 345                         while ((i+1)<max && isset(p, i+1))
 346                                 i++;
 347                         if (i != j)
 348                                 printf("-%d", i);
 349                 }
 350         printf("\n");
 351 }
 352
 353 void
 354 usage(void)
 355 {
 356         (void)fprintf(stderr, "usage: dumpfs filesys | device\n");
 357         exit(1);
 358 }