1 /* 2 * Copyright (c) 2015 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@dragonflybsd.org> 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 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 #include "hammer2.h" 35 36 typedef void (*cmd_callback)(const void *, hammer2_blockref_t *, int); 37 38 static void h2disk_check(const char *devpath, cmd_callback callback1); 39 static void h2pfs_check(int fd, hammer2_blockref_t *bref, 40 cmd_callback callback2); 41 42 static void info_callback1(const void *, hammer2_blockref_t *, int); 43 static void info_callback2(const void *, hammer2_blockref_t *, int); 44 45 static 46 void 47 h2disk_check_serno(cmd_callback fn) 48 { 49 DIR *dir; 50 51 if ((dir = opendir("/dev/serno")) != NULL) { 52 struct dirent *den; 53 54 while ((den = readdir(dir)) != NULL) { 55 const char *ptr; 56 int slice; 57 char part; 58 char *devpath; 59 60 if (!strcmp(den->d_name, ".") || 61 !strcmp(den->d_name, "..")) 62 continue; 63 ptr = strrchr(den->d_name, '.'); 64 if (ptr && sscanf(ptr, ".s%d%c", &slice, &part) == 2) { 65 asprintf(&devpath, "/dev/serno/%s", 66 den->d_name); 67 h2disk_check(devpath, fn); 68 free(devpath); 69 } 70 } 71 closedir(dir); 72 } 73 } 74 75 static 76 void 77 h2disk_check_dm(cmd_callback fn) 78 { 79 DIR *dir; 80 81 if ((dir = opendir("/dev/mapper")) != NULL) { 82 struct dirent *den; 83 84 while ((den = readdir(dir)) != NULL) { 85 char *devpath; 86 87 if (!strcmp(den->d_name, ".") || 88 !strcmp(den->d_name, "..") || 89 !strcmp(den->d_name, "control")) 90 continue; 91 asprintf(&devpath, "/dev/mapper/%s", 92 den->d_name); 93 h2disk_check(devpath, fn); 94 free(devpath); 95 } 96 closedir(dir); 97 } 98 } 99 100 static 101 void 102 h2disk_check_misc(cmd_callback fn) 103 { 104 DIR *dir; 105 106 if ((dir = opendir("/dev")) != NULL) { 107 struct dirent *den; 108 109 while ((den = readdir(dir)) != NULL) { 110 char *devpath; 111 112 if (!strcmp(den->d_name, ".") || 113 !strcmp(den->d_name, "..")) 114 continue; 115 if (strncmp(den->d_name, "ad", 2) && 116 strncmp(den->d_name, "vn", 2)) 117 continue; 118 if (!strcmp(den->d_name, "vn")) 119 continue; 120 if (!strncmp(den->d_name, "ad", 2) && 121 den->d_namlen <= 3) 122 continue; 123 asprintf(&devpath, "/dev/%s", den->d_name); 124 h2disk_check(devpath, fn); 125 free(devpath); 126 } 127 closedir(dir); 128 } 129 } 130 131 int 132 cmd_info(int ac, const char **av) 133 { 134 int i; 135 136 for (i = 0; i < ac; ++i) 137 h2disk_check(av[i], info_callback1); 138 if (ac == 0) { 139 h2disk_check_serno(info_callback1); 140 h2disk_check_dm(info_callback1); 141 h2disk_check_misc(info_callback1); 142 } 143 return 0; 144 } 145 146 struct pfs_entry { 147 TAILQ_ENTRY(pfs_entry) entry; 148 char name[NAME_MAX+1]; 149 char s[NAME_MAX+1]; 150 }; 151 152 static TAILQ_HEAD(, pfs_entry) head; 153 154 static 155 void 156 info_callback1(const void *path, hammer2_blockref_t *bref, int fd) 157 { 158 struct pfs_entry *p; 159 160 printf("%s:\n", (const char*)path); 161 162 TAILQ_INIT(&head); 163 h2pfs_check(fd, bref, info_callback2); 164 165 printf(" Type " 166 "ClusterId (pfs_clid) " 167 "Label\n"); 168 while ((p = TAILQ_FIRST(&head)) != NULL) { 169 printf(" %s %s\n", p->s, p->name); 170 TAILQ_REMOVE(&head, p, entry); 171 free(p); 172 } 173 } 174 175 static 176 void 177 info_callback2(const void *data, 178 hammer2_blockref_t *bref __unused, int fd __unused) 179 { 180 const hammer2_inode_data_t *ipdata = data; 181 const hammer2_inode_meta_t *meta = &ipdata->meta; 182 char *pfs_id_str = NULL; 183 const char *type_str; 184 struct pfs_entry *p, *e; 185 186 hammer2_uuid_to_str(&meta->pfs_clid, &pfs_id_str); 187 if (meta->pfs_type == HAMMER2_PFSTYPE_MASTER) { 188 if (meta->pfs_subtype == HAMMER2_PFSSUBTYPE_NONE) 189 type_str = "MASTER"; 190 else 191 type_str = hammer2_pfssubtype_to_str(meta->pfs_subtype); 192 } else { 193 type_str = hammer2_pfstype_to_str(meta->pfs_type); 194 } 195 e = calloc(1, sizeof(*e)); 196 snprintf(e->name, sizeof(e->name), "%s", ipdata->filename); 197 snprintf(e->s, sizeof(e->s), "%-11s %s", type_str, pfs_id_str); 198 free(pfs_id_str); 199 200 p = TAILQ_FIRST(&head); 201 while (p) { 202 if (strcmp(e->name, p->name) <= 0) { 203 TAILQ_INSERT_BEFORE(p, e, entry); 204 break; 205 } 206 p = TAILQ_NEXT(p, entry); 207 } 208 if (!p) 209 TAILQ_INSERT_TAIL(&head, e, entry); 210 } 211 212 static void mount_callback1(const void *, hammer2_blockref_t *, int); 213 static void mount_callback2(const void *, hammer2_blockref_t *, int); 214 static void cmd_mountall_alarm(int signo); 215 216 static volatile sig_atomic_t DidAlarm; 217 218 int 219 cmd_mountall(int ac, const char **av) 220 { 221 int i; 222 pid_t pid; 223 224 for (i = 0; i < ac; ++i) 225 h2disk_check(av[i], mount_callback1); 226 if (ac == 0) { 227 h2disk_check_serno(mount_callback1); 228 h2disk_check_dm(mount_callback1); 229 h2disk_check_misc(mount_callback1); 230 } 231 signal(SIGALRM, cmd_mountall_alarm); 232 for (;;) { 233 alarm(15); 234 pid = wait3(NULL, 0, NULL); 235 if (pid < 0 && errno == ECHILD) 236 break; 237 if (pid < 0 && DidAlarm) { 238 printf("Timeout waiting for mounts to complete\n"); 239 break; 240 } 241 } 242 alarm(0); 243 244 return 0; 245 } 246 247 static 248 void 249 cmd_mountall_alarm(int signo __unused) 250 { 251 DidAlarm = 1; 252 } 253 254 static const char *mount_path; 255 static const char *mount_comp; 256 257 static 258 void 259 mount_callback1(const void *devpath, hammer2_blockref_t *bref, int fd) 260 { 261 mount_path = devpath; 262 mount_comp = strrchr(devpath, '/'); 263 if (mount_comp) { 264 ++mount_comp; 265 h2pfs_check(fd, bref, mount_callback2); 266 } 267 } 268 269 static 270 void 271 mount_callback2(const void *data, 272 hammer2_blockref_t *bref __unused, int fd) 273 { 274 const hammer2_inode_data_t *ipdata = data; 275 char *tmp_path; 276 char *label; 277 int tfd; 278 279 if (strcmp(ipdata->filename, "LOCAL") == 0) { 280 if ((tfd = open("/dev/null", O_RDONLY)) >= 0) { 281 dup2(tfd, fd); 282 close(tfd); 283 } else { 284 perror("open(/dev/null)"); 285 exit(1); 286 } 287 asprintf(&tmp_path, "/var/hammer2/LOCAL.%s", mount_comp); 288 asprintf(&label, "%s@LOCAL", mount_path); 289 mkdir("/var/hammer2", 0700); 290 mkdir(tmp_path, 0700); 291 printf("mount %s\n", tmp_path); 292 if (fork() == 0) { 293 execl("/sbin/mount_hammer2", 294 "mount", 295 label, 296 tmp_path, 297 NULL); 298 } 299 free(label); 300 free(tmp_path); 301 } 302 } 303 304 static 305 void 306 h2disk_check(const char *devpath, cmd_callback callback1) 307 { 308 hammer2_blockref_t broot; 309 hammer2_blockref_t best; 310 hammer2_media_data_t media; 311 hammer2_volume_data_t *voldata; 312 struct partinfo partinfo; 313 int fd; 314 int i; 315 int best_i; 316 317 fd = open(devpath, O_RDONLY); 318 if (fd < 0) { 319 fprintf(stderr, "Unable to open \"%s\"\n", devpath); 320 return; 321 } 322 if (ioctl(fd, DIOCGPART, &partinfo) == -1) { 323 fprintf(stderr, "DIOCGPART failed on \"%s\"\n", devpath); 324 goto done; 325 } 326 327 /* 328 * Check partition or slice for HAMMER2 designation. Validate the 329 * designation either from the fstype (typically set for disklabel 330 * partitions), or the fstype_uuid (typically set for direct-mapped 331 * hammer2 GPT slices). 332 */ 333 if (partinfo.fstype != FS_HAMMER2) { 334 uint32_t status; 335 uuid_t h2uuid; 336 int is_nil = uuid_is_nil(&partinfo.fstype_uuid, NULL); 337 338 uuid_from_string(HAMMER2_UUID_STRING, &h2uuid, &status); 339 if (!is_nil && (status != uuid_s_ok || 340 uuid_compare(&partinfo.fstype_uuid, &h2uuid, NULL) != 0)) { 341 goto done; 342 } 343 } 344 345 /* 346 * Find the best volume header. 347 */ 348 best_i = -1; 349 bzero(&best, sizeof(best)); 350 for (i = 0; i < HAMMER2_NUM_VOLHDRS; ++i) { 351 bzero(&broot, sizeof(broot)); 352 broot.type = HAMMER2_BREF_TYPE_VOLUME; 353 broot.data_off = (i * HAMMER2_ZONE_BYTES64) | 354 HAMMER2_PBUFRADIX; 355 lseek(fd, broot.data_off & ~HAMMER2_OFF_MASK_RADIX, SEEK_SET); 356 if (read(fd, &media, HAMMER2_PBUFSIZE) != 357 (ssize_t)HAMMER2_PBUFSIZE) 358 continue; 359 voldata = &media.voldata; 360 if (voldata->magic != HAMMER2_VOLUME_ID_HBO) 361 continue; 362 /* XXX multiple volumes currently unsupported */ 363 if (voldata->nvolumes > 1) 364 break; 365 broot.mirror_tid = voldata->mirror_tid; 366 if (best_i < 0 || best.mirror_tid < broot.mirror_tid) { 367 best_i = i; 368 best = broot; 369 } 370 } 371 if (best_i >= 0) 372 callback1(devpath, &best, fd); 373 done: 374 close(fd); 375 } 376 377 static 378 void 379 h2pfs_check(int fd, hammer2_blockref_t *bref, cmd_callback callback2) 380 { 381 hammer2_media_data_t media; 382 hammer2_blockref_t *bscan; 383 int bcount; 384 int i; 385 size_t bytes; 386 size_t io_bytes; 387 size_t boff; 388 uint32_t cv; 389 uint64_t cv64; 390 hammer2_off_t io_off; 391 hammer2_off_t io_base; 392 393 bytes = (bref->data_off & HAMMER2_OFF_MASK_RADIX); 394 if (bytes) 395 bytes = (size_t)1 << bytes; 396 397 io_off = bref->data_off & ~HAMMER2_OFF_MASK_RADIX; 398 io_base = io_off & ~(hammer2_off_t)(HAMMER2_LBUFSIZE - 1); 399 io_bytes = bytes; 400 boff = io_off - io_base; 401 402 io_bytes = HAMMER2_LBUFSIZE; 403 while (io_bytes + boff < bytes) 404 io_bytes <<= 1; 405 406 if (io_bytes > sizeof(media)) { 407 printf("(bad block size %zu)\n", bytes); 408 return; 409 } 410 if (bref->type != HAMMER2_BREF_TYPE_DATA) { 411 lseek(fd, io_base, SEEK_SET); 412 if (read(fd, &media, io_bytes) != (ssize_t)io_bytes) { 413 printf("(media read failed)\n"); 414 return; 415 } 416 if (boff) 417 bcopy((char *)&media + boff, &media, bytes); 418 } 419 420 bscan = NULL; 421 bcount = 0; 422 423 /* 424 * Check data integrity in verbose mode, otherwise we are just doing 425 * a quick meta-data scan. Meta-data integrity is always checked. 426 * (Also see the check above that ensures the media data is loaded, 427 * otherwise there's no data to check!). 428 */ 429 if (bref->type != HAMMER2_BREF_TYPE_DATA || VerboseOpt >= 1) { 430 switch(HAMMER2_DEC_CHECK(bref->methods)) { 431 case HAMMER2_CHECK_NONE: 432 break; 433 case HAMMER2_CHECK_DISABLED: 434 break; 435 case HAMMER2_CHECK_ISCSI32: 436 cv = hammer2_icrc32(&media, bytes); 437 if (bref->check.iscsi32.value != cv) { 438 printf("\t(icrc failed %02x:%08x/%08x)\n", 439 bref->methods, 440 bref->check.iscsi32.value, 441 cv); 442 } 443 break; 444 case HAMMER2_CHECK_XXHASH64: 445 cv64 = XXH64(&media, bytes, XXH_HAMMER2_SEED); 446 if (bref->check.xxhash64.value != cv64) { 447 printf("\t(xxhash failed %02x:%016jx/%016jx)\n", 448 bref->methods, 449 bref->check.xxhash64.value, 450 cv64); 451 } 452 break; 453 case HAMMER2_CHECK_SHA192: 454 break; 455 case HAMMER2_CHECK_FREEMAP: 456 cv = hammer2_icrc32(&media, bytes); 457 if (bref->check.freemap.icrc32 != cv) { 458 printf("\t(fcrc %02x:%08x/%08x)\n", 459 bref->methods, 460 bref->check.freemap.icrc32, 461 cv); 462 } 463 break; 464 } 465 } 466 467 switch(bref->type) { 468 case HAMMER2_BREF_TYPE_INODE: 469 if (media.ipdata.meta.pfs_type == HAMMER2_PFSTYPE_SUPROOT) { 470 if ((media.ipdata.meta.op_flags & 471 HAMMER2_OPFLAG_DIRECTDATA) == 0) { 472 bscan = &media.ipdata.u.blockset.blockref[0]; 473 bcount = HAMMER2_SET_COUNT; 474 } 475 } else if (media.ipdata.meta.op_flags & HAMMER2_OPFLAG_PFSROOT) { 476 callback2(&media.ipdata, bref, fd); 477 bscan = NULL; 478 bcount = 0; 479 } else { 480 bscan = NULL; 481 bcount = 0; 482 } 483 break; 484 case HAMMER2_BREF_TYPE_INDIRECT: 485 bscan = &media.npdata[0]; 486 bcount = bytes / sizeof(hammer2_blockref_t); 487 break; 488 case HAMMER2_BREF_TYPE_VOLUME: 489 bscan = &media.voldata.sroot_blockset.blockref[0]; 490 bcount = HAMMER2_SET_COUNT; 491 break; 492 default: 493 break; 494 } 495 for (i = 0; i < bcount; ++i) { 496 if (bscan[i].type != HAMMER2_BREF_TYPE_EMPTY) 497 h2pfs_check(fd, &bscan[i], callback2); 498 } 499 } 500