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 type_str = hammer2_pfssubtype_to_str(meta->pfs_subtype); 189 else 190 type_str = hammer2_pfstype_to_str(meta->pfs_type); 191 e = calloc(1, sizeof(*e)); 192 snprintf(e->name, sizeof(e->name), "%s", ipdata->filename); 193 snprintf(e->s, sizeof(e->s), "%-11s %s", type_str, pfs_id_str); 194 free(pfs_id_str); 195 196 p = TAILQ_FIRST(&head); 197 while (p) { 198 if (strcmp(e->name, p->name) <= 0) { 199 TAILQ_INSERT_BEFORE(p, e, entry); 200 break; 201 } 202 p = TAILQ_NEXT(p, entry); 203 } 204 if (!p) 205 TAILQ_INSERT_TAIL(&head, e, entry); 206 } 207 208 static void mount_callback1(const void *, hammer2_blockref_t *, int); 209 static void mount_callback2(const void *, hammer2_blockref_t *, int); 210 static void cmd_mountall_alarm(int signo); 211 212 static volatile sig_atomic_t DidAlarm; 213 214 int 215 cmd_mountall(int ac, const char **av) 216 { 217 int i; 218 pid_t pid; 219 220 for (i = 0; i < ac; ++i) 221 h2disk_check(av[i], mount_callback1); 222 if (ac == 0) { 223 h2disk_check_serno(mount_callback1); 224 h2disk_check_dm(mount_callback1); 225 h2disk_check_misc(mount_callback1); 226 } 227 signal(SIGALRM, cmd_mountall_alarm); 228 for (;;) { 229 alarm(15); 230 pid = wait3(NULL, 0, NULL); 231 if (pid < 0 && errno == ECHILD) 232 break; 233 if (pid < 0 && DidAlarm) { 234 printf("Timeout waiting for mounts to complete\n"); 235 break; 236 } 237 } 238 alarm(0); 239 240 return 0; 241 } 242 243 static 244 void 245 cmd_mountall_alarm(int signo __unused) 246 { 247 DidAlarm = 1; 248 } 249 250 static const char *mount_path; 251 static const char *mount_comp; 252 253 static 254 void 255 mount_callback1(const void *devpath, hammer2_blockref_t *bref, int fd) 256 { 257 mount_path = devpath; 258 mount_comp = strrchr(devpath, '/'); 259 if (mount_comp) { 260 ++mount_comp; 261 h2pfs_check(fd, bref, mount_callback2); 262 } 263 } 264 265 static 266 void 267 mount_callback2(const void *data, 268 hammer2_blockref_t *bref __unused, int fd) 269 { 270 const hammer2_inode_data_t *ipdata = data; 271 char *tmp_path; 272 char *label; 273 int tfd; 274 275 if (strcmp(ipdata->filename, "LOCAL") == 0) { 276 if ((tfd = open("/dev/null", O_RDONLY)) >= 0) { 277 dup2(tfd, fd); 278 close(tfd); 279 } else { 280 perror("open(/dev/null)"); 281 exit(1); 282 } 283 asprintf(&tmp_path, "/var/hammer2/LOCAL.%s", mount_comp); 284 asprintf(&label, "%s@LOCAL", mount_path); 285 mkdir("/var/hammer2", 0700); 286 mkdir(tmp_path, 0700); 287 printf("mount %s\n", tmp_path); 288 if (fork() == 0) { 289 execl("/sbin/mount_hammer2", 290 "mount", 291 label, 292 tmp_path, 293 NULL); 294 } 295 free(label); 296 free(tmp_path); 297 } 298 } 299 300 static 301 void 302 h2disk_check(const char *devpath, cmd_callback callback1) 303 { 304 hammer2_blockref_t broot; 305 hammer2_blockref_t best; 306 hammer2_media_data_t media; 307 struct partinfo partinfo; 308 int fd; 309 int i; 310 int best_i; 311 312 fd = open(devpath, O_RDONLY); 313 if (fd < 0) { 314 fprintf(stderr, "Unable to open \"%s\"\n", devpath); 315 return; 316 } 317 if (ioctl(fd, DIOCGPART, &partinfo) == -1) { 318 fprintf(stderr, "DIOCGPART failed on \"%s\"\n", devpath); 319 goto done; 320 } 321 322 /* 323 * Check partition or slice for HAMMER2 designation. Validate the 324 * designation either from the fstype (typically set for disklabel 325 * partitions), or the fstype_uuid (typically set for direct-mapped 326 * hammer2 GPT slices). 327 */ 328 if (partinfo.fstype != FS_HAMMER2) { 329 uint32_t status; 330 uuid_t h2uuid; 331 int is_nil = uuid_is_nil(&partinfo.fstype_uuid, NULL); 332 333 uuid_from_string(HAMMER2_UUID_STRING, &h2uuid, &status); 334 if (!is_nil && (status != uuid_s_ok || 335 uuid_compare(&partinfo.fstype_uuid, &h2uuid, NULL) != 0)) { 336 goto done; 337 } 338 } 339 340 /* 341 * Find the best volume header. 342 */ 343 best_i = -1; 344 bzero(&best, sizeof(best)); 345 for (i = 0; i < HAMMER2_NUM_VOLHDRS; ++i) { 346 bzero(&broot, sizeof(broot)); 347 broot.type = HAMMER2_BREF_TYPE_VOLUME; 348 broot.data_off = (i * HAMMER2_ZONE_BYTES64) | 349 HAMMER2_PBUFRADIX; 350 lseek(fd, broot.data_off & ~HAMMER2_OFF_MASK_RADIX, SEEK_SET); 351 if (read(fd, &media, HAMMER2_PBUFSIZE) == 352 (ssize_t)HAMMER2_PBUFSIZE && 353 media.voldata.magic == HAMMER2_VOLUME_ID_HBO) { 354 broot.mirror_tid = media.voldata.mirror_tid; 355 if (best_i < 0 || best.mirror_tid < broot.mirror_tid) { 356 best_i = i; 357 best = broot; 358 } 359 } 360 } 361 if (best_i >= 0) 362 callback1(devpath, &best, fd); 363 done: 364 close(fd); 365 } 366 367 static 368 void 369 h2pfs_check(int fd, hammer2_blockref_t *bref, cmd_callback callback2) 370 { 371 hammer2_media_data_t media; 372 hammer2_blockref_t *bscan; 373 int bcount; 374 int i; 375 size_t bytes; 376 size_t io_bytes; 377 size_t boff; 378 uint32_t cv; 379 uint64_t cv64; 380 hammer2_off_t io_off; 381 hammer2_off_t io_base; 382 383 bytes = (size_t)1 << (bref->data_off & HAMMER2_OFF_MASK_RADIX); 384 385 io_off = bref->data_off & ~HAMMER2_OFF_MASK_RADIX; 386 io_base = io_off & ~(hammer2_off_t)(HAMMER2_LBUFSIZE - 1); 387 io_bytes = bytes; 388 boff = io_off - io_base; 389 390 io_bytes = HAMMER2_LBUFSIZE; 391 while (io_bytes + boff < bytes) 392 io_bytes <<= 1; 393 394 if (io_bytes > sizeof(media)) { 395 printf("(bad block size %zu)\n", bytes); 396 return; 397 } 398 if (bref->type != HAMMER2_BREF_TYPE_DATA) { 399 lseek(fd, io_base, SEEK_SET); 400 if (read(fd, &media, io_bytes) != (ssize_t)io_bytes) { 401 printf("(media read failed)\n"); 402 return; 403 } 404 if (boff) 405 bcopy((char *)&media + boff, &media, bytes); 406 } 407 408 bscan = NULL; 409 bcount = 0; 410 411 /* 412 * Check data integrity in verbose mode, otherwise we are just doing 413 * a quick meta-data scan. Meta-data integrity is always checked. 414 * (Also see the check above that ensures the media data is loaded, 415 * otherwise there's no data to check!). 416 */ 417 if (bref->type != HAMMER2_BREF_TYPE_DATA || VerboseOpt >= 1) { 418 switch(HAMMER2_DEC_CHECK(bref->methods)) { 419 case HAMMER2_CHECK_NONE: 420 break; 421 case HAMMER2_CHECK_DISABLED: 422 break; 423 case HAMMER2_CHECK_ISCSI32: 424 cv = hammer2_icrc32(&media, bytes); 425 if (bref->check.iscsi32.value != cv) { 426 printf("\t(icrc failed %02x:%08x/%08x)\n", 427 bref->methods, 428 bref->check.iscsi32.value, 429 cv); 430 } 431 break; 432 case HAMMER2_CHECK_XXHASH64: 433 cv64 = XXH64(&media, bytes, XXH_HAMMER2_SEED); 434 if (bref->check.xxhash64.value != cv64) { 435 printf("\t(xxhash failed %02x:%016jx/%016jx)\n", 436 bref->methods, 437 bref->check.xxhash64.value, 438 cv64); 439 } 440 break; 441 case HAMMER2_CHECK_SHA192: 442 break; 443 case HAMMER2_CHECK_FREEMAP: 444 cv = hammer2_icrc32(&media, bytes); 445 if (bref->check.freemap.icrc32 != cv) { 446 printf("\t(fcrc %02x:%08x/%08x)\n", 447 bref->methods, 448 bref->check.freemap.icrc32, 449 cv); 450 } 451 break; 452 } 453 } 454 455 switch(bref->type) { 456 case HAMMER2_BREF_TYPE_INODE: 457 if (media.ipdata.meta.pfs_type == HAMMER2_PFSTYPE_SUPROOT) { 458 if ((media.ipdata.meta.op_flags & 459 HAMMER2_OPFLAG_DIRECTDATA) == 0) { 460 bscan = &media.ipdata.u.blockset.blockref[0]; 461 bcount = HAMMER2_SET_COUNT; 462 } 463 } else if (media.ipdata.meta.op_flags & HAMMER2_OPFLAG_PFSROOT) { 464 callback2(&media.ipdata, bref, fd); 465 bscan = NULL; 466 bcount = 0; 467 } else { 468 bscan = NULL; 469 bcount = 0; 470 } 471 break; 472 case HAMMER2_BREF_TYPE_INDIRECT: 473 bscan = &media.npdata[0]; 474 bcount = bytes / sizeof(hammer2_blockref_t); 475 break; 476 case HAMMER2_BREF_TYPE_VOLUME: 477 bscan = &media.voldata.sroot_blockset.blockref[0]; 478 bcount = HAMMER2_SET_COUNT; 479 break; 480 default: 481 break; 482 } 483 for (i = 0; i < bcount; ++i) { 484 if (bscan[i].type != HAMMER2_BREF_TYPE_EMPTY) 485 h2pfs_check(fd, &bscan[i], callback2); 486 } 487 } 488