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 static void h2disk_check(const char *devpath, 37 void (*callback1)(const char *, hammer2_blockref_t *, int)); 38 static void h2pfs_check(int fd, hammer2_blockref_t *bref, 39 void (*callback2)(const char *, hammer2_blockref_t *, int)); 40 41 static void info_callback1(const char *, hammer2_blockref_t *, int); 42 static void info_callback2(const char *, hammer2_blockref_t *, int); 43 44 typedef void (*cmd_callback)(const char *, hammer2_blockref_t *, int); 45 46 static 47 void 48 h2disk_check_serno(cmd_callback fn) 49 { 50 DIR *dir; 51 52 if ((dir = opendir("/dev/serno")) != NULL) { 53 struct dirent *den; 54 55 while ((den = readdir(dir)) != NULL) { 56 const char *ptr; 57 int slice; 58 char part; 59 char *devpath; 60 61 if (!strcmp(den->d_name, ".") || 62 !strcmp(den->d_name, "..")) 63 continue; 64 ptr = strrchr(den->d_name, '.'); 65 if (ptr && sscanf(ptr, ".s%d%c", &slice, &part) == 2) { 66 asprintf(&devpath, "/dev/serno/%s", 67 den->d_name); 68 h2disk_check(devpath, fn); 69 free(devpath); 70 } 71 } 72 closedir(dir); 73 } 74 } 75 76 static 77 void 78 h2disk_check_dm(cmd_callback fn) 79 { 80 DIR *dir; 81 82 if ((dir = opendir("/dev/mapper")) != NULL) { 83 struct dirent *den; 84 85 while ((den = readdir(dir)) != NULL) { 86 char *devpath; 87 88 if (!strcmp(den->d_name, ".") || 89 !strcmp(den->d_name, "..") || 90 !strcmp(den->d_name, "control")) 91 continue; 92 asprintf(&devpath, "/dev/mapper/%s", 93 den->d_name); 94 h2disk_check(devpath, fn); 95 free(devpath); 96 } 97 closedir(dir); 98 } 99 } 100 101 static 102 void 103 h2disk_check_misc(cmd_callback fn) 104 { 105 DIR *dir; 106 107 if ((dir = opendir("/dev")) != NULL) { 108 struct dirent *den; 109 110 while ((den = readdir(dir)) != NULL) { 111 char *devpath; 112 113 if (!strcmp(den->d_name, ".") || 114 !strcmp(den->d_name, "..")) 115 continue; 116 if (strncmp(den->d_name, "ad", 2) && 117 strncmp(den->d_name, "vn", 2)) 118 continue; 119 if (!strcmp(den->d_name, "vn")) 120 continue; 121 if (!strncmp(den->d_name, "ad", 2) && 122 den->d_namlen <= 3) 123 continue; 124 asprintf(&devpath, "/dev/%s", den->d_name); 125 h2disk_check(devpath, fn); 126 free(devpath); 127 } 128 closedir(dir); 129 } 130 } 131 132 int 133 cmd_info(int ac, const char **av) 134 { 135 int i; 136 137 for (i = 0; i < ac; ++i) 138 h2disk_check(av[i], info_callback1); 139 if (ac == 0) { 140 h2disk_check_serno(info_callback1); 141 h2disk_check_dm(info_callback1); 142 h2disk_check_misc(info_callback1); 143 } 144 return 0; 145 } 146 147 static 148 void 149 info_callback1(const char *path, hammer2_blockref_t *bref, int fd) 150 { 151 printf("%s:\n", path); 152 h2pfs_check(fd, bref, info_callback2); 153 } 154 155 static 156 void 157 info_callback2(const char *pfsname, 158 hammer2_blockref_t *bref __unused, int fd __unused) 159 { 160 printf(" %s\n", pfsname); 161 } 162 163 static void mount_callback1(const char *, hammer2_blockref_t *, int); 164 static void mount_callback2(const char *, hammer2_blockref_t *, int); 165 static void cmd_mountall_alarm(int signo); 166 167 static volatile sig_atomic_t DidAlarm; 168 169 int 170 cmd_mountall(int ac, const char **av) 171 { 172 int i; 173 pid_t pid; 174 175 for (i = 0; i < ac; ++i) 176 h2disk_check(av[i], mount_callback1); 177 if (ac == 0) { 178 h2disk_check_serno(mount_callback1); 179 h2disk_check_dm(mount_callback1); 180 h2disk_check_misc(mount_callback1); 181 } 182 signal(SIGALRM, cmd_mountall_alarm); 183 for (;;) { 184 alarm(15); 185 pid = wait3(NULL, 0, NULL); 186 if (pid < 0 && errno == ECHILD) 187 break; 188 if (pid < 0 && DidAlarm) { 189 printf("Timeout waiting for mounts to complete\n"); 190 break; 191 } 192 } 193 alarm(0); 194 195 return 0; 196 } 197 198 static 199 void 200 cmd_mountall_alarm(int signo __unused) 201 { 202 DidAlarm = 1; 203 } 204 205 static const char *mount_path; 206 static const char *mount_comp; 207 208 static 209 void 210 mount_callback1(const char *devpath, hammer2_blockref_t *bref, int fd) 211 { 212 mount_path = devpath; 213 mount_comp = strrchr(devpath, '/'); 214 if (mount_comp) { 215 ++mount_comp; 216 h2pfs_check(fd, bref, mount_callback2); 217 } 218 } 219 220 static 221 void 222 mount_callback2(const char *pfsname, 223 hammer2_blockref_t *bref __unused, int fd) 224 { 225 char *tmp_path; 226 char *label; 227 int tfd; 228 229 if (strcmp(pfsname, "LOCAL") == 0) { 230 if ((tfd = open("/dev/null", O_RDONLY)) >= 0) { 231 dup2(tfd, fd); 232 close(tfd); 233 } else { 234 perror("open(/dev/null)"); 235 exit(1); 236 } 237 asprintf(&tmp_path, "/var/hammer2/LOCAL.%s", mount_comp); 238 asprintf(&label, "%s@LOCAL", mount_path); 239 mkdir("/var/hammer2", 0700); 240 mkdir(tmp_path, 0700); 241 printf("mount %s\n", tmp_path); 242 if (fork() == 0) { 243 execl("/sbin/mount_hammer2", 244 "mount", 245 label, 246 tmp_path, 247 NULL); 248 } 249 free(label); 250 free(tmp_path); 251 } 252 } 253 254 static 255 void 256 h2disk_check(const char *devpath, 257 void (*callback1)(const char *, hammer2_blockref_t *, int)) 258 { 259 hammer2_blockref_t broot; 260 hammer2_blockref_t best; 261 hammer2_media_data_t media; 262 struct partinfo partinfo; 263 int fd; 264 int i; 265 int best_i; 266 267 fd = open(devpath, O_RDONLY); 268 if (fd < 0) { 269 fprintf(stderr, "Unable to open \"%s\"\n", devpath); 270 return; 271 } 272 if (ioctl(fd, DIOCGPART, &partinfo) == -1) { 273 fprintf(stderr, "DIOCGPART failed on \"%s\"\n", devpath); 274 goto done; 275 } 276 277 /* 278 * Check partition or slice for HAMMER2 designation. Validate the 279 * designation either from the fstype (typically set for disklabel 280 * partitions), or the fstype_uuid (typically set for direct-mapped 281 * hammer2 GPT slices). 282 */ 283 if (partinfo.fstype != FS_HAMMER2) { 284 uint32_t status; 285 uuid_t h2uuid; 286 int is_nil = uuid_is_nil(&partinfo.fstype_uuid, NULL); 287 288 uuid_from_string(HAMMER2_UUID_STRING, &h2uuid, &status); 289 if (!is_nil && (status != uuid_s_ok || 290 uuid_compare(&partinfo.fstype_uuid, &h2uuid, NULL) != 0)) { 291 goto done; 292 } 293 } 294 295 /* 296 * Find the best volume header. 297 */ 298 best_i = -1; 299 bzero(&best, sizeof(best)); 300 for (i = 0; i < HAMMER2_NUM_VOLHDRS; ++i) { 301 bzero(&broot, sizeof(broot)); 302 broot.type = HAMMER2_BREF_TYPE_VOLUME; 303 broot.data_off = (i * HAMMER2_ZONE_BYTES64) | 304 HAMMER2_PBUFRADIX; 305 lseek(fd, broot.data_off & ~HAMMER2_OFF_MASK_RADIX, SEEK_SET); 306 if (read(fd, &media, HAMMER2_PBUFSIZE) == 307 (ssize_t)HAMMER2_PBUFSIZE && 308 media.voldata.magic == HAMMER2_VOLUME_ID_HBO) { 309 broot.mirror_tid = media.voldata.mirror_tid; 310 if (best_i < 0 || best.mirror_tid < broot.mirror_tid) { 311 best_i = i; 312 best = broot; 313 } 314 } 315 } 316 if (best_i >= 0) 317 callback1(devpath, &best, fd); 318 done: 319 close(fd); 320 } 321 322 static 323 void 324 h2pfs_check(int fd, hammer2_blockref_t *bref, 325 void (*callback2)(const char *, hammer2_blockref_t *, int)) 326 { 327 hammer2_media_data_t media; 328 hammer2_blockref_t *bscan; 329 int bcount; 330 int i; 331 size_t bytes; 332 size_t io_bytes; 333 size_t boff; 334 uint32_t cv; 335 uint64_t cv64; 336 hammer2_off_t io_off; 337 hammer2_off_t io_base; 338 339 bytes = (size_t)1 << (bref->data_off & HAMMER2_OFF_MASK_RADIX); 340 341 io_off = bref->data_off & ~HAMMER2_OFF_MASK_RADIX; 342 io_base = io_off & ~(hammer2_off_t)(HAMMER2_LBUFSIZE - 1); 343 io_bytes = bytes; 344 boff = io_off - io_base; 345 346 io_bytes = HAMMER2_LBUFSIZE; 347 while (io_bytes + boff < bytes) 348 io_bytes <<= 1; 349 350 if (io_bytes > sizeof(media)) { 351 printf("(bad block size %zu)\n", bytes); 352 return; 353 } 354 if (bref->type != HAMMER2_BREF_TYPE_DATA) { 355 lseek(fd, io_base, SEEK_SET); 356 if (read(fd, &media, io_bytes) != (ssize_t)io_bytes) { 357 printf("(media read failed)\n"); 358 return; 359 } 360 if (boff) 361 bcopy((char *)&media + boff, &media, bytes); 362 } 363 364 bscan = NULL; 365 bcount = 0; 366 367 /* 368 * Check data integrity in verbose mode, otherwise we are just doing 369 * a quick meta-data scan. Meta-data integrity is always checked. 370 * (Also see the check above that ensures the media data is loaded, 371 * otherwise there's no data to check!). 372 */ 373 if (bref->type != HAMMER2_BREF_TYPE_DATA || VerboseOpt >= 1) { 374 switch(HAMMER2_DEC_CHECK(bref->methods)) { 375 case HAMMER2_CHECK_NONE: 376 break; 377 case HAMMER2_CHECK_DISABLED: 378 break; 379 case HAMMER2_CHECK_ISCSI32: 380 cv = hammer2_icrc32(&media, bytes); 381 if (bref->check.iscsi32.value != cv) { 382 printf("\t(icrc failed %02x:%08x/%08x)\n", 383 bref->methods, 384 bref->check.iscsi32.value, 385 cv); 386 } 387 break; 388 case HAMMER2_CHECK_XXHASH64: 389 cv64 = XXH64(&media, bytes, XXH_HAMMER2_SEED); 390 if (bref->check.xxhash64.value != cv64) { 391 printf("\t(xxhash failed %02x:%016jx/%016jx)\n", 392 bref->methods, 393 bref->check.xxhash64.value, 394 cv64); 395 } 396 break; 397 case HAMMER2_CHECK_SHA192: 398 break; 399 case HAMMER2_CHECK_FREEMAP: 400 cv = hammer2_icrc32(&media, bytes); 401 if (bref->check.freemap.icrc32 != cv) { 402 printf("\t(fcrc %02x:%08x/%08x)\n", 403 bref->methods, 404 bref->check.freemap.icrc32, 405 cv); 406 } 407 break; 408 } 409 } 410 411 switch(bref->type) { 412 case HAMMER2_BREF_TYPE_INODE: 413 if (media.ipdata.meta.pfs_type == HAMMER2_PFSTYPE_SUPROOT) { 414 if ((media.ipdata.meta.op_flags & 415 HAMMER2_OPFLAG_DIRECTDATA) == 0) { 416 bscan = &media.ipdata.u.blockset.blockref[0]; 417 bcount = HAMMER2_SET_COUNT; 418 } 419 } else if (media.ipdata.meta.op_flags & HAMMER2_OPFLAG_PFSROOT) { 420 callback2((char*)media.ipdata.filename, bref, fd); 421 bscan = NULL; 422 bcount = 0; 423 } else { 424 bscan = NULL; 425 bcount = 0; 426 } 427 break; 428 case HAMMER2_BREF_TYPE_INDIRECT: 429 bscan = &media.npdata[0]; 430 bcount = bytes / sizeof(hammer2_blockref_t); 431 break; 432 case HAMMER2_BREF_TYPE_VOLUME: 433 bscan = &media.voldata.sroot_blockset.blockref[0]; 434 bcount = HAMMER2_SET_COUNT; 435 break; 436 default: 437 break; 438 } 439 for (i = 0; i < bcount; ++i) { 440 if (bscan[i].type != HAMMER2_BREF_TYPE_EMPTY) 441 h2pfs_check(fd, &bscan[i], callback2); 442 } 443 } 444