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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1983, 1992, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)dumpfs.c 8.5 (Berkeley) 4/29/95 31 * $FreeBSD: src/sbin/dumpfs/dumpfs.c,v 1.13.2.1 2001/01/22 18:10:11 iedowse Exp $ 32 */ 33 34 #include <sys/param.h> 35 #include <sys/time.h> 36 37 #include <vfs/ufs/dinode.h> 38 #include <vfs/ufs/fs.h> 39 40 #include <err.h> 41 #include <fcntl.h> 42 #include <fstab.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 48 static union { 49 struct fs fs; 50 char pad[MAXBSIZE]; 51 } fsun; 52 #define afs fsun.fs 53 54 static union { 55 struct cg cg; 56 char pad[MAXBSIZE]; 57 } cgun; 58 #define acg cgun.cg 59 60 static long dev_bsize = 1; 61 62 static int dumpfs(char *); 63 static int dumpcg(char *, int, int); 64 static int marshal(const char*); 65 static void pbits(void *, int); 66 static void usage(void) __dead2; 67 68 int 69 main(int argc, char **argv) 70 { 71 struct fstab *fs; 72 int ch, domarshal, eval; 73 74 domarshal = 0; 75 76 while ((ch = getopt(argc, argv, "m")) != -1) 77 switch(ch) { 78 case 'm': 79 domarshal = 1; 80 break; 81 case '?': 82 default: 83 usage(); 84 } 85 argc -= optind; 86 argv += optind; 87 88 if (argc < 1) 89 usage(); 90 91 for (eval = 0; *argv; ++argv) 92 if ((fs = getfsfile(*argv)) == NULL) 93 if (domarshal) 94 eval |= marshal(*argv); 95 else 96 eval |= dumpfs(*argv); 97 else 98 if (domarshal) 99 eval |= marshal(fs->fs_spec); 100 else 101 eval |= dumpfs(fs->fs_spec); 102 exit(eval); 103 } 104 105 static int 106 dumpfs(char *name) 107 { 108 ssize_t n; 109 int fd, c, i, j, k, size; 110 111 if ((fd = open(name, O_RDONLY, 0)) < 0) 112 goto err; 113 if (lseek(fd, (off_t)SBOFF, SEEK_SET) == (off_t)-1) 114 goto err; 115 if ((n = read(fd, &afs, SBSIZE)) == -1) 116 goto err; 117 118 if (n != SBSIZE) { 119 warnx("%s: non-existent or truncated superblock, skipped", 120 name); 121 close(fd); 122 return (1); 123 } 124 if (afs.fs_magic != FS_MAGIC) { 125 warnx("%s: superblock has bad magic number, skipped", name); 126 close(fd); 127 return (1); 128 } 129 130 if (afs.fs_postblformat == FS_42POSTBLFMT) 131 afs.fs_nrpos = 8; 132 dev_bsize = afs.fs_fsize / fsbtodb(&afs, 1); 133 printf("magic\t%x\ttime\t%s", afs.fs_magic, 134 ctime((time_t *)&afs.fs_time)); 135 printf("id\t[ %x %x ]\n", afs.fs_id[0], afs.fs_id[1]); 136 printf("cylgrp\t%s\tinodes\t%s\n", 137 afs.fs_postblformat == FS_42POSTBLFMT ? "static" : "dynamic", 138 afs.fs_inodefmt < FS_44INODEFMT ? "4.2/4.3BSD" : "4.4BSD"); 139 printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n", 140 afs.fs_cstotal.cs_nbfree, afs.fs_cstotal.cs_ndir, 141 afs.fs_cstotal.cs_nifree, afs.fs_cstotal.cs_nffree); 142 printf("ncg\t%d\tncyl\t%d\tsize\t%d\tblocks\t%d\n", 143 afs.fs_ncg, afs.fs_ncyl, afs.fs_size, afs.fs_dsize); 144 printf("bsize\t%d\tshift\t%d\tmask\t0x%08x\n", 145 afs.fs_bsize, afs.fs_bshift, afs.fs_bmask); 146 printf("fsize\t%d\tshift\t%d\tmask\t0x%08x\n", 147 afs.fs_fsize, afs.fs_fshift, afs.fs_fmask); 148 printf("frag\t%d\tshift\t%d\tfsbtodb\t%d\n", 149 afs.fs_frag, afs.fs_fragshift, afs.fs_fsbtodb); 150 printf("cpg\t%d\tbpg\t%d\tfpg\t%d\tipg\t%d\n", 151 afs.fs_cpg, afs.fs_fpg / afs.fs_frag, afs.fs_fpg, afs.fs_ipg); 152 printf("minfree\t%d%%\toptim\t%s\tmaxcontig %d\tmaxbpg\t%d\n", 153 afs.fs_minfree, afs.fs_optim == FS_OPTSPACE ? "space" : "time", 154 afs.fs_maxcontig, afs.fs_maxbpg); 155 printf("rotdelay %dms\trps\t%d\n", 156 afs.fs_rotdelay, afs.fs_rps); 157 printf("ntrak\t%d\tnsect\t%d\tnpsect\t%d\tspc\t%d\n", 158 afs.fs_ntrak, afs.fs_nsect, afs.fs_npsect, afs.fs_spc); 159 printf("symlinklen %d\ttrackskew %d\tinterleave %d\tcontigsumsize %d\n", 160 afs.fs_maxsymlinklen, afs.fs_trackskew, afs.fs_interleave, 161 afs.fs_contigsumsize); 162 printf("nindir\t%d\tinopb\t%d\tnspf\t%d\tmaxfilesize\t%ju\n", 163 afs.fs_nindir, afs.fs_inopb, afs.fs_nspf, 164 (intmax_t)afs.fs_maxfilesize); 165 printf("sblkno\t%d\tcblkno\t%d\tiblkno\t%d\tdblkno\t%d\n", 166 afs.fs_sblkno, afs.fs_cblkno, afs.fs_iblkno, afs.fs_dblkno); 167 printf("sbsize\t%d\tcgsize\t%d\tcgoffset %d\tcgmask\t0x%08x\n", 168 afs.fs_sbsize, afs.fs_cgsize, afs.fs_cgoffset, afs.fs_cgmask); 169 printf("csaddr\t%d\tcssize\t%d\tshift\t%d\tmask\t0x%08x\n", 170 afs.fs_csaddr, afs.fs_cssize, afs.fs_csshift, afs.fs_csmask); 171 printf("cgrotor\t%d\tfmod\t%d\tronly\t%d\tclean\t%d\n", 172 afs.fs_cgrotor, afs.fs_fmod, afs.fs_ronly, afs.fs_clean); 173 printf("flags\t"); 174 if (afs.fs_flags == 0) 175 printf("none"); 176 if (afs.fs_flags & FS_UNCLEAN) 177 printf("unclean "); 178 if (afs.fs_flags & FS_DOSOFTDEP) 179 printf("soft-updates "); 180 if ((afs.fs_flags & ~(FS_UNCLEAN | FS_DOSOFTDEP)) != 0) 181 printf("unknown flags (%#x)", 182 afs.fs_flags & ~(FS_UNCLEAN | FS_DOSOFTDEP)); 183 putchar('\n'); 184 if (afs.fs_cpc != 0) 185 printf("blocks available in each of %d rotational positions", 186 afs.fs_nrpos); 187 else 188 printf("(no rotational position table)\n"); 189 for (c = 0; c < afs.fs_cpc; c++) { 190 printf("\ncylinder number %d:", c); 191 for (i = 0; i < afs.fs_nrpos; i++) { 192 if (fs_postbl(&afs, c)[i] == -1) 193 continue; 194 printf("\n position %d:\t", i); 195 for (j = fs_postbl(&afs, c)[i], k = 1; ; 196 j += fs_rotbl(&afs)[j], k++) { 197 printf("%5d", j); 198 if (k % 12 == 0) 199 printf("\n\t\t"); 200 if (fs_rotbl(&afs)[j] == 0) 201 break; 202 } 203 } 204 } 205 printf("\ncs[].cs_(nbfree,ndir,nifree,nffree):\n\t"); 206 afs.fs_csp = calloc(1, afs.fs_cssize); 207 for (i = 0, j = 0; i < afs.fs_cssize; i += afs.fs_bsize, j++) { 208 size = afs.fs_cssize - i < afs.fs_bsize ? 209 afs.fs_cssize - i : afs.fs_bsize; 210 if (lseek(fd, 211 (off_t)(fsbtodb(&afs, (afs.fs_csaddr + j * afs.fs_frag))) * 212 (off_t)dev_bsize, SEEK_SET) == (off_t)-1) 213 goto err; 214 if (read(fd, (char *)afs.fs_csp + i, size) != size) 215 goto err; 216 } 217 for (i = 0; i < afs.fs_ncg; i++) { 218 struct csum *cs = &afs.fs_cs(&afs, i); 219 if (i && i % 4 == 0) 220 printf("\n\t"); 221 printf("(%d,%d,%d,%d) ", 222 cs->cs_nbfree, cs->cs_ndir, cs->cs_nifree, cs->cs_nffree); 223 } 224 printf("\n"); 225 if (afs.fs_ncyl % afs.fs_cpg) { 226 printf("cylinders in last group %d\n", 227 i = afs.fs_ncyl % afs.fs_cpg); 228 printf("blocks in last group %d\n", 229 i * afs.fs_spc / NSPB(&afs)); 230 } 231 printf("\n"); 232 for (i = 0; i < afs.fs_ncg; i++) 233 if (dumpcg(name, fd, i)) 234 goto err; 235 close(fd); 236 return (0); 237 238 err: if (fd != -1) 239 close(fd); 240 warn("%s", name); 241 return (1); 242 }; 243 244 static int 245 dumpcg(char *name, int fd, int c) 246 { 247 off_t cur; 248 int i, j; 249 250 printf("\ncg %d:\n", c); 251 if ((cur = lseek(fd, (off_t)(fsbtodb(&afs, cgtod(&afs, c))) * 252 (off_t)dev_bsize, SEEK_SET)) == (off_t)-1) 253 return (1); 254 if (read(fd, &acg, afs.fs_bsize) != afs.fs_bsize) { 255 warnx("%s: error reading cg", name); 256 return (1); 257 } 258 printf("magic\t%x\ttell\t%jx\ttime\t%s", 259 afs.fs_postblformat == FS_42POSTBLFMT ? 260 ((struct ocg *)&acg)->cg_magic : acg.cg_magic, 261 (intmax_t)cur, ctime((time_t *)&acg.cg_time)); 262 printf("cgx\t%d\tncyl\t%d\tniblk\t%d\tndblk\t%d\n", 263 acg.cg_cgx, acg.cg_ncyl, acg.cg_niblk, acg.cg_ndblk); 264 printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n", 265 acg.cg_cs.cs_nbfree, acg.cg_cs.cs_ndir, 266 acg.cg_cs.cs_nifree, acg.cg_cs.cs_nffree); 267 printf("rotor\t%d\tirotor\t%d\tfrotor\t%d\nfrsum", 268 acg.cg_rotor, acg.cg_irotor, acg.cg_frotor); 269 for (i = 1, j = 0; i < afs.fs_frag; i++) { 270 printf("\t%d", acg.cg_frsum[i]); 271 j += i * acg.cg_frsum[i]; 272 } 273 printf("\nsum of frsum: %d", j); 274 if (afs.fs_contigsumsize > 0) { 275 for (i = 1; i < afs.fs_contigsumsize; i++) { 276 if ((i - 1) % 8 == 0) 277 printf("\nclusters %d-%d:", i, 278 afs.fs_contigsumsize - 1 < i + 7 ? 279 afs.fs_contigsumsize - 1 : i + 7); 280 printf("\t%d", cg_clustersum(&acg)[i]); 281 } 282 printf("\nclusters size %d and over: %d\n", 283 afs.fs_contigsumsize, 284 cg_clustersum(&acg)[afs.fs_contigsumsize]); 285 printf("clusters free:\t"); 286 pbits(cg_clustersfree(&acg), acg.cg_nclusterblks); 287 } else 288 printf("\n"); 289 printf("iused:\t"); 290 pbits(cg_inosused(&acg), afs.fs_ipg); 291 printf("free:\t"); 292 pbits(cg_blksfree(&acg), afs.fs_fpg); 293 printf("b:\n"); 294 for (i = 0; i < afs.fs_cpg; i++) { 295 if (cg_blktot(&acg)[i] == 0) 296 continue; 297 printf(" c%d:\t(%d)\t", i, cg_blktot(&acg)[i]); 298 for (j = 0; j < afs.fs_nrpos; j++) { 299 if (afs.fs_cpc > 0 && 300 fs_postbl(&afs, i % afs.fs_cpc)[j] == -1) 301 continue; 302 printf(" %d", cg_blks(&afs, &acg, i)[j]); 303 } 304 printf("\n"); 305 } 306 return (0); 307 }; 308 309 static int 310 marshal(const char *name) 311 { 312 ssize_t n; 313 int fd; 314 static char realname[PATH_MAX]; 315 316 if ((fd = open(name, O_RDONLY, 0)) < 0) 317 goto err; 318 if (lseek(fd, (off_t)SBOFF, SEEK_SET) == (off_t)-1) 319 goto err; 320 if ((n = read(fd, &afs, SBSIZE)) == -1) 321 goto err; 322 323 if (n != SBSIZE) { 324 warnx("%s: non-existent or truncated superblock, skipped", 325 name); 326 close(fd); 327 return (1); 328 } 329 if (afs.fs_magic != FS_MAGIC) { 330 warnx("%s: superblock has bad magic number, skipped", name); 331 close(fd); 332 return (1); 333 } 334 335 if(strncmp(name, "/dev", 4) == 0) { 336 snprintf(realname, PATH_MAX, "%s", name); 337 } else { 338 snprintf(realname, PATH_MAX, "/dev/%s", name); 339 } 340 341 printf("# newfs command for %s (%s)\n", name, realname); 342 printf("newfs "); 343 if (afs.fs_flags & FS_DOSOFTDEP) 344 printf("-U "); 345 printf("-a %d ", afs.fs_maxcontig); 346 printf("-b %d ", afs.fs_bsize); 347 /* -c calculated */ 348 /* -d should be 0 per manpage */ 349 printf("-e %d ", afs.fs_maxbpg); 350 printf("-f %d ", afs.fs_fsize); 351 printf("-g %d ", afs.fs_avgfilesize); 352 printf("-h %d ", afs.fs_avgfpdir); 353 /* -i calculated */ 354 /* -j..l not implemented */ 355 printf("-m %d ", afs.fs_minfree); 356 /* -n not implemented */ 357 printf(" -o "); 358 switch (afs.fs_optim) { 359 case FS_OPTSPACE: 360 printf("space "); 361 break; 362 case FS_OPTTIME: 363 printf("time "); 364 break; 365 default: 366 printf("unknown "); 367 break; 368 } 369 /* -p..r not implemented */ 370 printf("-s %jd ", (intmax_t)afs.fs_size); 371 printf("%s ", realname); 372 printf("\n"); 373 374 return (0); 375 376 err: if (fd != -1) 377 close(fd); 378 warn("%s", name); 379 return (1); 380 381 } 382 383 static void 384 pbits(void *vp, int max) 385 { 386 int i; 387 char *p; 388 int count, j; 389 390 for (count = i = 0, p = vp; i < max; i++) 391 if (isset(p, i)) { 392 if (count) 393 printf(",%s", count % 6 ? " " : "\n\t"); 394 count++; 395 printf("%d", i); 396 j = i; 397 while ((i+1)<max && isset(p, i+1)) 398 i++; 399 if (i != j) 400 printf("-%d", i); 401 } 402 printf("\n"); 403 } 404 405 static void 406 usage(void) 407 { 408 fprintf(stderr, "usage: dumpfs filesys | device\n"); 409 exit(1); 410 } 411