1 /* $NetBSD: dumpfs.c,v 1.34 2003/04/02 22:50:52 he 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1983, 1992, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)dumpfs.c 8.5 (Berkeley) 4/29/95"; 45 #else 46 __RCSID("$NetBSD: dumpfs.c,v 1.34 2003/04/02 22:50:52 he Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 #include <sys/time.h> 52 53 #include <ufs/ufs/dinode.h> 54 #include <ufs/ufs/ufs_bswap.h> 55 #include <ufs/ffs/fs.h> 56 #include <ufs/ffs/ffs_extern.h> 57 58 #include <err.h> 59 #include <errno.h> 60 #include <fcntl.h> 61 #include <fstab.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 #include <util.h> 67 68 union { 69 struct fs fs; 70 char pad[MAXBSIZE]; 71 } fsun; 72 #define afs fsun.fs 73 74 union { 75 struct cg cg; 76 char pad[MAXBSIZE]; 77 } cgun; 78 #define acg cgun.cg 79 80 long dev_bsize = 1; 81 int needswap, Fflag; 82 int is_ufs2; 83 84 int dumpfs(const char *); 85 int dumpcg(const char *, int, int); 86 int main(int, char **); 87 int openpartition(const char *, int, char *, size_t); 88 void pbits(void *, int); 89 void usage(void); 90 void swap_cg(struct cg *); 91 92 int 93 main(int argc, char *argv[]) 94 { 95 int ch, eval; 96 97 while ((ch = getopt(argc, argv, "F")) != -1) 98 switch(ch) { 99 case 'F': 100 Fflag = 1; 101 break; 102 case '?': 103 default: 104 usage(); 105 } 106 argc -= optind; 107 argv += optind; 108 109 if (argc < 1) 110 usage(); 111 112 for (eval = 0; *argv; ++argv) { 113 eval |= dumpfs(*argv); 114 printf("\n"); 115 } 116 117 exit(eval); 118 } 119 120 off_t sblock_try[] = SBLOCKSEARCH; 121 122 int 123 dumpfs(const char *name) 124 { 125 int fd, i, j, size, printold; 126 time_t t; 127 char device[MAXPATHLEN]; 128 struct csum *ccsp; 129 130 if (Fflag) 131 fd = open(name, O_RDONLY); 132 else { 133 fd = openpartition(name, O_RDONLY, device, sizeof(device)); 134 name = device; 135 } 136 if (fd == -1) 137 goto err; 138 139 for (i = 0; sblock_try[i] != -1; i++) { 140 if (lseek(fd, sblock_try[i], SEEK_SET) == (off_t)-1) 141 continue; 142 if (read(fd, &afs, SBLOCKSIZE) != SBLOCKSIZE) 143 continue; 144 switch(afs.fs_magic) { 145 case FS_UFS2_MAGIC: 146 is_ufs2 = 1; 147 /*FALLTHROUGH*/ 148 case FS_UFS1_MAGIC: 149 goto found; 150 case FS_UFS2_MAGIC_SWAPPED: 151 /*FALLTHROUGH*/ 152 case FS_UFS1_MAGIC_SWAPPED: 153 needswap = 1; 154 goto found; 155 default: 156 continue; 157 } 158 } 159 warnx("%s: could not find superblock, skipped", name); 160 return 1; 161 found: 162 163 if (needswap) 164 ffs_sb_swap(&afs, &afs); 165 166 printold = (afs.fs_magic == FS_UFS1_MAGIC && 167 (afs.fs_old_flags & FS_FLAGS_UPDATED) == 0); 168 if (printold) { 169 afs.fs_flags = afs.fs_old_flags; 170 afs.fs_maxbsize = afs.fs_bsize; 171 afs.fs_time = afs.fs_old_time; 172 afs.fs_size = afs.fs_old_size; 173 afs.fs_dsize = afs.fs_old_dsize; 174 afs.fs_csaddr = afs.fs_old_csaddr; 175 afs.fs_cstotal.cs_ndir = afs.fs_old_cstotal.cs_ndir; 176 afs.fs_cstotal.cs_nbfree = afs.fs_old_cstotal.cs_nbfree; 177 afs.fs_cstotal.cs_nifree = afs.fs_old_cstotal.cs_nifree; 178 afs.fs_cstotal.cs_nffree = afs.fs_old_cstotal.cs_nffree; 179 } 180 181 printf("file system: %s\n", name); 182 #if BYTE_ORDER == LITTLE_ENDIAN 183 if (needswap) 184 #else 185 if (!needswap) 186 #endif 187 printf("endian\tbig-endian\n"); 188 else 189 printf("endian\tlittle-endian\n"); 190 if (printold && afs.fs_old_postblformat == FS_42POSTBLFMT) 191 afs.fs_old_nrpos = 8; 192 dev_bsize = afs.fs_fsize / fsbtodb(&afs, 1); 193 t = afs.fs_time; 194 printf("location%lld\tmagic\t%x\ttime\t%s", (long long)sblock_try[i], 195 afs.fs_magic, ctime(&t)); 196 i = 0; 197 if (printold && afs.fs_old_postblformat != FS_42POSTBLFMT) { 198 i++; 199 if (afs.fs_old_inodefmt >= FS_44INODEFMT) { 200 int max; 201 202 i++; 203 max = afs.fs_maxcontig; 204 size = afs.fs_contigsumsize; 205 if ((max < 2 && size == 0) 206 || (max > 1 && size >= MIN(max, FS_MAXCONTIG))) 207 i++; 208 } 209 } 210 printf("id\t[ %x %x ]\n", afs.fs_id[0], afs.fs_id[1]); 211 printf("cylgrp\t%s\tinodes\t%s\tfslevel %d\tsoftdep %sabled\n", 212 i < 1 ? "static" : "dynamic", i < 2 ? "4.2/4.3BSD" : "4.4BSD", i, 213 (afs.fs_flags & FS_DOSOFTDEP) ? "en" : "dis"); 214 printf("nbfree\t%lld\tndir\t%lld\tnifree\t%lld\tnffree\t%lld\n", 215 (long long)afs.fs_cstotal.cs_nbfree, 216 (long long)afs.fs_cstotal.cs_ndir, 217 (long long)afs.fs_cstotal.cs_nifree, 218 (long long)afs.fs_cstotal.cs_nffree); 219 printf("ncg\t%d\tsize\t%lld\tblocks\t%lld\n", 220 afs.fs_ncg, (long long)afs.fs_size, (long long)afs.fs_dsize); 221 if (printold) 222 printf("ncyl\t%d\n", afs.fs_old_ncyl); 223 printf("bsize\t%d\tshift\t%d\tmask\t0x%08x\n", 224 afs.fs_bsize, afs.fs_bshift, afs.fs_bmask); 225 printf("fsize\t%d\tshift\t%d\tmask\t0x%08x\n", 226 afs.fs_fsize, afs.fs_fshift, afs.fs_fmask); 227 printf("frag\t%d\tshift\t%d\tfsbtodb\t%d\n", 228 afs.fs_frag, afs.fs_fragshift, afs.fs_fsbtodb); 229 printf("bpg\t%d\tfpg\t%d\tipg\t%d\n", 230 afs.fs_fpg / afs.fs_frag, afs.fs_fpg, afs.fs_ipg); 231 printf("minfree\t%d%%\toptim\t%s\tmaxcontig %d\tmaxbpg\t%d\n", 232 afs.fs_minfree, afs.fs_optim == FS_OPTSPACE ? "space" : "time", 233 afs.fs_maxcontig, afs.fs_maxbpg); 234 if (printold) { 235 printf("cpg\t%d\trotdelay %dms\trps\t%d\n", 236 afs.fs_old_cpg, afs.fs_old_rotdelay, afs.fs_old_rps); 237 printf("ntrak\t%d\tnsect\t%d\tnpsect\t%d\tspc\t%d\n", 238 afs.fs_spare2, afs.fs_old_nsect, afs.fs_old_npsect, 239 afs.fs_old_spc); 240 printf("trackskew %d\tinterleave %d\n", 241 afs.fs_old_trackskew, afs.fs_old_interleave); 242 } 243 printf("symlinklen %d\tcontigsumsize %d\n", 244 afs.fs_maxsymlinklen, afs.fs_contigsumsize); 245 printf("maxfilesize 0x%016llx\n", 246 (unsigned long long)afs.fs_maxfilesize); 247 printf("nindir\t%d\tinopb\t%d\n", afs.fs_nindir, afs.fs_inopb); 248 if (printold) 249 printf("nspf\t%d\n", afs.fs_old_nspf); 250 printf("avgfilesize %d\tavgfpdir %d\n", 251 afs.fs_avgfilesize, afs.fs_avgfpdir); 252 printf("sblkno\t%d\tcblkno\t%d\tiblkno\t%d\tdblkno\t%d\n", 253 afs.fs_sblkno, afs.fs_cblkno, afs.fs_iblkno, afs.fs_dblkno); 254 printf("sbsize\t%d\tcgsize\t%d\n", afs.fs_sbsize, afs.fs_cgsize); 255 if (printold) 256 printf("offset\t%d\tmask\t0x%08x\n", 257 afs.fs_old_cgoffset, afs.fs_old_cgmask); 258 printf("csaddr\t%lld\tcssize %d\n", 259 (long long)afs.fs_csaddr, afs.fs_cssize); 260 if (printold) 261 printf("shift\t%d\tmask\t0x%08x\n", 262 afs.fs_spare1[0], afs.fs_spare1[1]); 263 printf("cgrotor\t%d\tfmod\t%d\tronly\t%d\tclean\t0x%02x\n", 264 afs.fs_cgrotor, afs.fs_fmod, afs.fs_ronly, afs.fs_clean); 265 if (printold) { 266 if (afs.fs_old_cpc != 0) 267 printf("blocks available in each of %d rotational " 268 "positions", afs.fs_old_nrpos); 269 else 270 printf("(no rotational position table)\n"); 271 } 272 printf("\ncs[].cs_(nbfree,ndir,nifree,nffree):\n\t"); 273 afs.fs_csp = calloc(1, afs.fs_cssize); 274 for (i = 0, j = 0; i < afs.fs_cssize; i += afs.fs_bsize, j++) { 275 size = afs.fs_cssize - i < afs.fs_bsize ? 276 afs.fs_cssize - i : afs.fs_bsize; 277 ccsp = (struct csum *)((char *)afs.fs_csp + i); 278 if (lseek(fd, 279 (off_t)(fsbtodb(&afs, (afs.fs_csaddr + j * afs.fs_frag))) * 280 dev_bsize, SEEK_SET) == (off_t)-1) 281 goto err; 282 if (read(fd, ccsp, size) != size) 283 goto err; 284 if (needswap) 285 ffs_csum_swap(ccsp, ccsp, size); 286 } 287 for (i = 0; i < afs.fs_ncg; i++) { 288 struct csum *cs = &afs.fs_cs(&afs, i); 289 if (i && i % 4 == 0) 290 printf("\n\t"); 291 printf("(%d,%d,%d,%d) ", 292 cs->cs_nbfree, cs->cs_ndir, cs->cs_nifree, cs->cs_nffree); 293 } 294 printf("\n"); 295 if (printold && (afs.fs_old_ncyl % afs.fs_old_cpg)) { 296 printf("cylinders in last group %d\n", 297 i = afs.fs_old_ncyl % afs.fs_old_cpg); 298 printf("blocks in last group %d\n", 299 i * afs.fs_old_spc / (afs.fs_old_nspf << afs.fs_fragshift)); 300 } 301 printf("\n"); 302 for (i = 0; i < afs.fs_ncg; i++) 303 if (dumpcg(name, fd, i)) 304 goto err; 305 (void)close(fd); 306 return 0; 307 308 err: if (fd != -1) 309 (void)close(fd); 310 warn("%s", name); 311 return 1; 312 }; 313 314 int 315 dumpcg(const char *name, int fd, int c) 316 { 317 off_t cur; 318 int i, j; 319 time_t t; 320 321 printf("\ncg %d:\n", c); 322 if ((cur = lseek(fd, (off_t)(fsbtodb(&afs, cgtod(&afs, c))) * dev_bsize, 323 SEEK_SET)) == (off_t)-1) 324 return (1); 325 if (read(fd, &acg, afs.fs_bsize) != afs.fs_bsize) { 326 warnx("%s: error reading cg", name); 327 return (1); 328 } 329 if (needswap) 330 ffs_cg_swap(&acg, &acg, &afs); 331 t = acg.cg_time; 332 printf("magic\t%x\ttell\t%llx\ttime\t%s", 333 afs.fs_old_postblformat == FS_42POSTBLFMT ? 334 ((struct ocg *)&acg)->cg_magic : acg.cg_magic, 335 (long long)cur, ctime(&t)); 336 printf("cgx\t%d\tniblk\t%d\tndblk\t%d\n", 337 acg.cg_cgx, acg.cg_niblk, acg.cg_ndblk); 338 printf("nbfree\t%d\tndir\t%d\tnifree\t%d\tnffree\t%d\n", 339 acg.cg_cs.cs_nbfree, acg.cg_cs.cs_ndir, 340 acg.cg_cs.cs_nifree, acg.cg_cs.cs_nffree); 341 printf("rotor\t%d\tirotor\t%d\tfrotor\t%d\nfrsum", 342 acg.cg_rotor, acg.cg_irotor, acg.cg_frotor); 343 for (i = 1, j = 0; i < afs.fs_frag; i++) { 344 printf("\t%d", acg.cg_frsum[i]); 345 j += i * acg.cg_frsum[i]; 346 } 347 printf("\nsum of frsum: %d", j); 348 if (afs.fs_contigsumsize > 0) { 349 for (i = 1; i < afs.fs_contigsumsize; i++) { 350 if ((i - 1) % 8 == 0) 351 printf("\nclusters %d-%d:", i, 352 afs.fs_contigsumsize - 1 < i + 7 ? 353 afs.fs_contigsumsize - 1 : i + 7); 354 printf("\t%d", cg_clustersum(&acg, 0)[i]); 355 } 356 printf("\nclusters size %d and over: %d\n", 357 afs.fs_contigsumsize, 358 cg_clustersum(&acg, 0)[afs.fs_contigsumsize]); 359 printf("clusters free:\t"); 360 pbits(cg_clustersfree(&acg, 0), acg.cg_nclusterblks); 361 } else 362 printf("\n"); 363 printf("iused:\t"); 364 pbits(cg_inosused(&acg, 0), afs.fs_ipg); 365 printf("free:\t"); 366 pbits(cg_blksfree(&acg, 0), afs.fs_fpg); 367 return (0); 368 }; 369 370 void 371 pbits(void *vp, int max) 372 { 373 int i; 374 char *p; 375 int count, j; 376 377 for (count = i = 0, p = vp; i < max; i++) 378 if (isset(p, i)) { 379 if (count) 380 printf(",%s", count % 6 ? " " : "\n\t"); 381 count++; 382 printf("%d", i); 383 j = i; 384 while ((i+1)<max && isset(p, i+1)) 385 i++; 386 if (i != j) 387 printf("-%d", i); 388 } 389 printf("\n"); 390 } 391 392 void 393 usage(void) 394 { 395 396 (void)fprintf(stderr, "usage: dumpfs [-F] filesys | device [...]\n"); 397 exit(1); 398 } 399 400 int 401 openpartition(const char *name, int flags, char *device, size_t devicelen) 402 { 403 char rawspec[MAXPATHLEN], *p; 404 struct fstab *fs; 405 int fd, oerrno; 406 407 fs = getfsfile(name); 408 if (fs) { 409 if ((p = strrchr(fs->fs_spec, '/')) != NULL) { 410 snprintf(rawspec, sizeof(rawspec), "%.*s/r%s", 411 (int)(p - fs->fs_spec), fs->fs_spec, p + 1); 412 name = rawspec; 413 } else 414 name = fs->fs_spec; 415 } 416 fd = opendisk(name, flags, device, devicelen, 0); 417 if (fd == -1 && errno == ENOENT) { 418 oerrno = errno; 419 strlcpy(device, name, devicelen); 420 errno = oerrno; 421 } 422 return (fd); 423 } 424