sbin/dumpfs/dumpfs.c

   1 /*
   2  * Copyright (c) 1983, 1992, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1983, 1992, 1993 The Regents of the University of California.  All rights reserved.
  34  * @(#)dumpfs.c 8.5 (Berkeley) 4/29/95
  35  * $FreeBSD: src/sbin/dumpfs/dumpfs.c,v 1.13.2.1 2001/01/22 18:10:11 iedowse Exp $
  36  * $DragonFly: src/sbin/dumpfs/dumpfs.c,v 1.10 2008/08/07 11:15:45 swildner Exp $
  37  */
  38
  39 #include <sys/param.h>
  40 #include <sys/time.h>
  41
  42 #include <vfs/ufs/dinode.h>
  43 #include <vfs/ufs/fs.h>
  44
  45 #include <err.h>
  46 #include <fcntl.h>
  47 #include <fstab.h>
  48 #include <stdio.h>
  49 #include <stdlib.h>
  50 #include <string.h>
  51 #include <unistd.h>
  52
  53 union {
  54         struct fs fs;
  55         char pad[MAXBSIZE];
  56 } fsun;
  57 #define afs     fsun.fs
  58
  59 union {
  60         struct cg cg;
  61         char pad[MAXBSIZE];
  62 } cgun;
  63 #define acg     cgun.cg
  64
  65 long    dev_bsize = 1;
  66
  67 int     dumpfs(char *);
  68 int     dumpcg(char *, int, int);
  69 int     marshal(const char*);
  70 void    pbits(void *, int);
  71 void    usage(void);
  72
  73 int
  74 main(int argc, char **argv)
  75 {
  76         struct fstab *fs;
  77         int ch, domarshal, eval;
  78
  79         domarshal = 0;
  80
  81         while ((ch = getopt(argc, argv, "m")) != -1)
  82                 switch(ch) {
  83                 case 'm':
  84                         domarshal = 1;
  85                         break;
  86                 case '?':
  87                 default:
  88                         usage();
  89                 }
  90         argc -= optind;
  91         argv += optind;
  92
  93         if (argc < 1)
  94                 usage();
  95
  96         for (eval = 0; *argv; ++argv)
  97                 if ((fs = getfsfile(*argv)) == NULL)
  98                         if (domarshal)
  99                                 eval |= marshal(*argv);
 100                         else
 101                                 eval |= dumpfs(*argv);
 102                 else
 103                         if (domarshal)
 104                                 eval |= marshal(fs->fs_spec);
 105                         else
 106                                 eval |= dumpfs(fs->fs_spec);
 107         exit(eval);
 108 }
 109
 110 int
 111 dumpfs(char *name)
 112 {
 113         ssize_t n;
 114         int fd, c, i, j, k, size;
 115
 116         if ((fd = open(name, O_RDONLY, 0)) < 0)
 117                 goto err;
 118         if (lseek(fd, (off_t)SBOFF, SEEK_SET) == (off_t)-1)
 119                 goto err;
 120         if ((n = read(fd, &afs, SBSIZE)) == -1)
 121                 goto err;
 122
 123         if (n != SBSIZE) {
 124                 warnx("%s: non-existent or truncated superblock, skipped",
 125                     name);
 126                 close(fd);
 127                 return (1);
 128         }
 129         if (afs.fs_magic != FS_MAGIC) {
 130                 warnx("%s: superblock has bad magic number, skipped", name);
 131                 close(fd);
 132                 return (1);
 133         }
 134
 135         if (afs.fs_postblformat == FS_42POSTBLFMT)
 136                 afs.fs_nrpos = 8;
 137         dev_bsize = afs.fs_fsize / fsbtodb(&afs, 1);
 138         printf("magic\t%x\ttime\t%s", afs.fs_magic,
 139             ctime((time_t *)&afs.fs_time));
 140         printf("id\t[ %x %x ]\n", afs.fs_id[0], afs.fs_id[1]);
 141         printf("cylgrp\t%s\tinodes\t%s\n",
 142             afs.fs_postblformat == FS_42POSTBLFMT ? "static" : "dynamic",
 143             afs.fs_inodefmt < FS_44INODEFMT ? "4.2/4.3BSD" : "4.4BSD");
 144         printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n",
 145             afs.fs_cstotal.cs_nbfree, afs.fs_cstotal.cs_ndir,
 146             afs.fs_cstotal.cs_nifree, afs.fs_cstotal.cs_nffree);
 147         printf("ncg\t%d\tncyl\t%d\tsize\t%d\tblocks\t%d\n",
 148             afs.fs_ncg, afs.fs_ncyl, afs.fs_size, afs.fs_dsize);
 149         printf("bsize\t%d\tshift\t%d\tmask\t0x%08x\n",
 150             afs.fs_bsize, afs.fs_bshift, afs.fs_bmask);
 151         printf("fsize\t%d\tshift\t%d\tmask\t0x%08x\n",
 152             afs.fs_fsize, afs.fs_fshift, afs.fs_fmask);
 153         printf("frag\t%d\tshift\t%d\tfsbtodb\t%d\n",
 154             afs.fs_frag, afs.fs_fragshift, afs.fs_fsbtodb);
 155         printf("cpg\t%d\tbpg\t%d\tfpg\t%d\tipg\t%d\n",
 156             afs.fs_cpg, afs.fs_fpg / afs.fs_frag, afs.fs_fpg, afs.fs_ipg);
 157         printf("minfree\t%d%%\toptim\t%s\tmaxcontig %d\tmaxbpg\t%d\n",
 158             afs.fs_minfree, afs.fs_optim == FS_OPTSPACE ? "space" : "time",
 159             afs.fs_maxcontig, afs.fs_maxbpg);
 160         printf("rotdelay %dms\trps\t%d\n",
 161             afs.fs_rotdelay, afs.fs_rps);
 162         printf("ntrak\t%d\tnsect\t%d\tnpsect\t%d\tspc\t%d\n",
 163             afs.fs_ntrak, afs.fs_nsect, afs.fs_npsect, afs.fs_spc);
 164         printf("symlinklen %d\ttrackskew %d\tinterleave %d\tcontigsumsize %d\n",
 165             afs.fs_maxsymlinklen, afs.fs_trackskew, afs.fs_interleave,
 166             afs.fs_contigsumsize);
 167         printf("nindir\t%d\tinopb\t%d\tnspf\t%d\tmaxfilesize\t%qu\n",
 168             afs.fs_nindir, afs.fs_inopb, afs.fs_nspf, afs.fs_maxfilesize);
 169         printf("sblkno\t%d\tcblkno\t%d\tiblkno\t%d\tdblkno\t%d\n",
 170             afs.fs_sblkno, afs.fs_cblkno, afs.fs_iblkno, afs.fs_dblkno);
 171         printf("sbsize\t%d\tcgsize\t%d\tcgoffset %d\tcgmask\t0x%08x\n",
 172             afs.fs_sbsize, afs.fs_cgsize, afs.fs_cgoffset, afs.fs_cgmask);
 173         printf("csaddr\t%d\tcssize\t%d\tshift\t%d\tmask\t0x%08x\n",
 174             afs.fs_csaddr, afs.fs_cssize, afs.fs_csshift, afs.fs_csmask);
 175         printf("cgrotor\t%d\tfmod\t%d\tronly\t%d\tclean\t%d\n",
 176             afs.fs_cgrotor, afs.fs_fmod, afs.fs_ronly, afs.fs_clean);
 177         printf("flags\t");
 178         if (afs.fs_flags == 0)
 179                 printf("none");
 180         if (afs.fs_flags & FS_UNCLEAN)
 181                         printf("unclean ");
 182         if (afs.fs_flags & FS_DOSOFTDEP)
 183                         printf("soft-updates ");
 184         if ((afs.fs_flags & ~(FS_UNCLEAN | FS_DOSOFTDEP)) != 0)
 185                         printf("unknown flags (%#x)",
 186                             afs.fs_flags & ~(FS_UNCLEAN | FS_DOSOFTDEP));
 187         putchar('\n');
 188         if (afs.fs_cpc != 0)
 189                 printf("blocks available in each of %d rotational positions",
 190                      afs.fs_nrpos);
 191         else
 192                 printf("(no rotational position table)\n");
 193         for (c = 0; c < afs.fs_cpc; c++) {
 194                 printf("\ncylinder number %d:", c);
 195                 for (i = 0; i < afs.fs_nrpos; i++) {
 196                         if (fs_postbl(&afs, c)[i] == -1)
 197                                 continue;
 198                         printf("\n   position %d:\t", i);
 199                         for (j = fs_postbl(&afs, c)[i], k = 1; ;
 200                              j += fs_rotbl(&afs)[j], k++) {
 201                                 printf("%5d", j);
 202                                 if (k % 12 == 0)
 203                                         printf("\n\t\t");
 204                                 if (fs_rotbl(&afs)[j] == 0)
 205                                         break;
 206                         }
 207                 }
 208         }
 209         printf("\ncs[].cs_(nbfree,ndir,nifree,nffree):\n\t");
 210         afs.fs_csp = calloc(1, afs.fs_cssize);
 211         for (i = 0, j = 0; i < afs.fs_cssize; i += afs.fs_bsize, j++) {
 212                 size = afs.fs_cssize - i < afs.fs_bsize ?
 213                     afs.fs_cssize - i : afs.fs_bsize;
 214                 if (lseek(fd,
 215                     (off_t)(fsbtodb(&afs, (afs.fs_csaddr + j * afs.fs_frag))) *
 216                     (off_t)dev_bsize, SEEK_SET) == (off_t)-1)
 217                         goto err;
 218                 if (read(fd, (char *)afs.fs_csp + i, size) != size)
 219                         goto err;
 220         }
 221         for (i = 0; i < afs.fs_ncg; i++) {
 222                 struct csum *cs = &afs.fs_cs(&afs, i);
 223                 if (i && i % 4 == 0)
 224                         printf("\n\t");
 225                 printf("(%d,%d,%d,%d) ",
 226                     cs->cs_nbfree, cs->cs_ndir, cs->cs_nifree, cs->cs_nffree);
 227         }
 228         printf("\n");
 229         if (afs.fs_ncyl % afs.fs_cpg) {
 230                 printf("cylinders in last group %d\n",
 231                     i = afs.fs_ncyl % afs.fs_cpg);
 232                 printf("blocks in last group %d\n",
 233                     i * afs.fs_spc / NSPB(&afs));
 234         }
 235         printf("\n");
 236         for (i = 0; i < afs.fs_ncg; i++)
 237                 if (dumpcg(name, fd, i))
 238                         goto err;
 239         close(fd);
 240         return (0);
 241
 242 err:    if (fd != -1)
 243                 close(fd);
 244         warn("%s", name);
 245         return (1);
 246 };
 247
 248 int
 249 dumpcg(char *name, int fd, int c)
 250 {
 251         off_t cur;
 252         int i, j;
 253
 254         printf("\ncg %d:\n", c);
 255         if ((cur = lseek(fd, (off_t)(fsbtodb(&afs, cgtod(&afs, c))) *
 256             (off_t)dev_bsize, SEEK_SET)) == (off_t)-1)
 257                 return (1);
 258         if (read(fd, &acg, afs.fs_bsize) != afs.fs_bsize) {
 259                 warnx("%s: error reading cg", name);
 260                 return (1);
 261         }
 262         printf("magic\t%x\ttell\t%qx\ttime\t%s",
 263             afs.fs_postblformat == FS_42POSTBLFMT ?
 264             ((struct ocg *)&acg)->cg_magic : acg.cg_magic,
 265             cur, ctime((time_t *)&acg.cg_time));
 266         printf("cgx\t%d\tncyl\t%d\tniblk\t%d\tndblk\t%d\n",
 267             acg.cg_cgx, acg.cg_ncyl, acg.cg_niblk, acg.cg_ndblk);
 268         printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n",
 269             acg.cg_cs.cs_nbfree, acg.cg_cs.cs_ndir,
 270             acg.cg_cs.cs_nifree, acg.cg_cs.cs_nffree);
 271         printf("rotor\t%d\tirotor\t%d\tfrotor\t%d\nfrsum",
 272             acg.cg_rotor, acg.cg_irotor, acg.cg_frotor);
 273         for (i = 1, j = 0; i < afs.fs_frag; i++) {
 274                 printf("\t%d", acg.cg_frsum[i]);
 275                 j += i * acg.cg_frsum[i];
 276         }
 277         printf("\nsum of frsum: %d", j);
 278         if (afs.fs_contigsumsize > 0) {
 279                 for (i = 1; i < afs.fs_contigsumsize; i++) {
 280                         if ((i - 1) % 8 == 0)
 281                                 printf("\nclusters %d-%d:", i,
 282                                     afs.fs_contigsumsize - 1 < i + 7 ?
 283                                     afs.fs_contigsumsize - 1 : i + 7);
 284                         printf("\t%d", cg_clustersum(&acg)[i]);
 285                 }
 286                 printf("\nclusters size %d and over: %d\n",
 287                     afs.fs_contigsumsize,
 288                     cg_clustersum(&acg)[afs.fs_contigsumsize]);
 289                 printf("clusters free:\t");
 290                 pbits(cg_clustersfree(&acg), acg.cg_nclusterblks);
 291         } else
 292                 printf("\n");
 293         printf("iused:\t");
 294         pbits(cg_inosused(&acg), afs.fs_ipg);
 295         printf("free:\t");
 296         pbits(cg_blksfree(&acg), afs.fs_fpg);
 297         printf("b:\n");
 298         for (i = 0; i < afs.fs_cpg; i++) {
 299                 if (cg_blktot(&acg)[i] == 0)
 300                         continue;
 301                 printf("   c%d:\t(%d)\t", i, cg_blktot(&acg)[i]);
 302                 for (j = 0; j < afs.fs_nrpos; j++) {
 303                         if (afs.fs_cpc > 0 &&
 304                             fs_postbl(&afs, i % afs.fs_cpc)[j] == -1)
 305                                 continue;
 306                         printf(" %d", cg_blks(&afs, &acg, i)[j]);
 307                 }
 308                 printf("\n");
 309         }
 310         return (0);
 311 };
 312
 313 int
 314 marshal(const char *name)
 315 {
 316         ssize_t n;
 317         int fd;
 318         static char realname[12];
 319
 320         if ((fd = open(name, O_RDONLY, 0)) < 0)
 321                 goto err;
 322         if (lseek(fd, (off_t)SBOFF, SEEK_SET) == (off_t)-1)
 323                 goto err;
 324         if ((n = read(fd, &afs, SBSIZE)) == -1)
 325                 goto err;
 326
 327         if (n != SBSIZE) {
 328                 warnx("%s: non-existent or truncated superblock, skipped",
 329                     name);
 330                 close(fd);
 331                 return (1);
 332         }
 333         if (afs.fs_magic != FS_MAGIC) {
 334                 warnx("%s: superblock has bad magic number, skipped", name);
 335                 close(fd);
 336                 return (1);
 337         }
 338
 339         if(strncmp(name, "/dev", 4) == 0) {
 340                 snprintf(realname, 12, "%s", name);
 341         } else {
 342                 snprintf(realname, 12, "/dev/%s", name);
 343         }
 344
 345         printf("# newfs command for %s (%s)\n", name, realname);
 346         printf("newfs ");
 347         if (afs.fs_flags & FS_DOSOFTDEP)
 348                 printf("-U ");
 349         printf("-a %d ", afs.fs_maxcontig);
 350         printf("-b %d ", afs.fs_bsize);
 351         /* -c calculated */
 352         /* -d should be 0 per manpage */
 353         printf("-e %d ", afs.fs_maxbpg);
 354         printf("-f %d ", afs.fs_fsize);
 355         printf("-g %d ", afs.fs_avgfilesize);
 356         printf("-h %d ", afs.fs_avgfpdir);
 357         /* -i calculated */
 358         /* -j..l not implemented */
 359         printf("-m %d ", afs.fs_minfree);
 360         /* -n not implemented */
 361         printf(" -o ");
 362         switch (afs.fs_optim) {
 363         case FS_OPTSPACE:
 364                 printf("space ");
 365                 break;
 366         case FS_OPTTIME:
 367                 printf("time ");
 368                 break;
 369         default:
 370                 printf("unknown ");
 371                 break;
 372         }
 373         /* -p..r not implemented */
 374         printf("-s %jd ", (intmax_t)afs.fs_size);
 375         printf("%s ", realname);
 376         printf("\n");
 377
 378         return (0);
 379
 380 err:    if (fd != -1)
 381                 close(fd);
 382         warn("%s", name);
 383         return (1);
 384
 385 }
 386
 387 void
 388 pbits(void *vp, int max)
 389 {
 390         int i;
 391         char *p;
 392         int count, j;
 393
 394         for (count = i = 0, p = vp; i < max; i++)
 395                 if (isset(p, i)) {
 396                         if (count)
 397                                 printf(",%s", count % 6 ? " " : "\n\t");
 398                         count++;
 399                         printf("%d", i);
 400                         j = i;
 401                         while ((i+1)<max && isset(p, i+1))
 402                                 i++;
 403                         if (i != j)
 404                                 printf("-%d", i);
 405                 }
 406         printf("\n");
 407 }
 408
 409 void
 410 usage(void)
 411 {
 412         fprintf(stderr, "usage: dumpfs filesys | device\n");
 413         exit(1);
 414 }