| 1 | /*- |
| 2 | * Copyright (c) 2002 Marcel Moolenaar |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * 'init' directive added by Matthew Dillon. |
| 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 the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | * |
| 28 | * $FreeBSD: src/sbin/gpt/create.c,v 1.11 2005/08/31 01:47:19 marcel Exp $ |
| 29 | * $DragonFly: src/sbin/gpt/create.c,v 1.1 2007/06/16 22:29:27 dillon Exp $ |
| 30 | */ |
| 31 | |
| 32 | #include <sys/types.h> |
| 33 | #include <sys/stat.h> |
| 34 | #include <sys/errno.h> |
| 35 | #include <sys/param.h> |
| 36 | #include <bus/cam/scsi/scsi_daio.h> |
| 37 | |
| 38 | #include <err.h> |
| 39 | #include <stddef.h> |
| 40 | #include <stdio.h> |
| 41 | #include <stdlib.h> |
| 42 | #include <stdarg.h> |
| 43 | #include <string.h> |
| 44 | #include <unistd.h> |
| 45 | |
| 46 | #include "map.h" |
| 47 | #include "gpt.h" |
| 48 | |
| 49 | static int force; |
| 50 | static int primary_only; |
| 51 | |
| 52 | static void do_erase(int fd); |
| 53 | |
| 54 | static void |
| 55 | usage_create(void) |
| 56 | { |
| 57 | fprintf(stderr, "usage: %s [-fp] device ...\n", getprogname()); |
| 58 | exit(1); |
| 59 | } |
| 60 | |
| 61 | static void |
| 62 | usage_init(void) |
| 63 | { |
| 64 | fprintf(stderr, "usage: %s -f [-B] [-E] device ...\n", getprogname()); |
| 65 | fprintf(stderr, "\tnote: -f is mandatory for this command\n"); |
| 66 | exit(1); |
| 67 | } |
| 68 | |
| 69 | static void |
| 70 | create(int fd) |
| 71 | { |
| 72 | uuid_t uuid; |
| 73 | off_t blocks, last; |
| 74 | map_t *gpt, *tpg; |
| 75 | map_t *tbl, *lbt; |
| 76 | map_t *map; |
| 77 | struct mbr *mbr; |
| 78 | struct gpt_hdr *hdr; |
| 79 | struct gpt_ent *ent; |
| 80 | unsigned int i; |
| 81 | |
| 82 | last = mediasz / secsz - 1LL; |
| 83 | |
| 84 | if (map_find(MAP_TYPE_PRI_GPT_HDR) != NULL || |
| 85 | map_find(MAP_TYPE_SEC_GPT_HDR) != NULL) { |
| 86 | warnx("%s: error: device already contains a GPT", device_name); |
| 87 | return; |
| 88 | } |
| 89 | map = map_find(MAP_TYPE_MBR); |
| 90 | if (map != NULL) { |
| 91 | if (!force) { |
| 92 | warnx("%s: error: device contains a MBR", device_name); |
| 93 | return; |
| 94 | } |
| 95 | |
| 96 | /* Nuke the MBR in our internal map. */ |
| 97 | map->map_type = MAP_TYPE_UNUSED; |
| 98 | } |
| 99 | |
| 100 | /* |
| 101 | * Create PMBR. |
| 102 | */ |
| 103 | if (map_find(MAP_TYPE_PMBR) == NULL) { |
| 104 | if (map_free(0LL, 1LL) == 0) { |
| 105 | warnx("%s: error: no room for the PMBR", device_name); |
| 106 | return; |
| 107 | } |
| 108 | mbr = gpt_read(fd, 0LL, 1); |
| 109 | bzero(mbr, sizeof(*mbr)); |
| 110 | mbr->mbr_sig = htole16(MBR_SIG); |
| 111 | mbr->mbr_part[0].part_shd = 0xff; |
| 112 | mbr->mbr_part[0].part_ssect = 0xff; |
| 113 | mbr->mbr_part[0].part_scyl = 0xff; |
| 114 | mbr->mbr_part[0].part_typ = 0xee; |
| 115 | mbr->mbr_part[0].part_ehd = 0xff; |
| 116 | mbr->mbr_part[0].part_esect = 0xff; |
| 117 | mbr->mbr_part[0].part_ecyl = 0xff; |
| 118 | mbr->mbr_part[0].part_start_lo = htole16(1); |
| 119 | if (last > 0xffffffff) { |
| 120 | mbr->mbr_part[0].part_size_lo = htole16(0xffff); |
| 121 | mbr->mbr_part[0].part_size_hi = htole16(0xffff); |
| 122 | } else { |
| 123 | mbr->mbr_part[0].part_size_lo = htole16(last); |
| 124 | mbr->mbr_part[0].part_size_hi = htole16(last >> 16); |
| 125 | } |
| 126 | map = map_add(0LL, 1LL, MAP_TYPE_PMBR, mbr); |
| 127 | gpt_write(fd, map); |
| 128 | } |
| 129 | |
| 130 | /* Get the amount of free space after the MBR */ |
| 131 | blocks = map_free(1LL, 0LL); |
| 132 | if (blocks == 0LL) { |
| 133 | warnx("%s: error: no room for the GPT header", device_name); |
| 134 | return; |
| 135 | } |
| 136 | |
| 137 | /* Don't create more than parts entries. */ |
| 138 | if ((uint64_t)(blocks - 1) * secsz > parts * sizeof(struct gpt_ent)) { |
| 139 | blocks = (parts * sizeof(struct gpt_ent)) / secsz; |
| 140 | if ((parts * sizeof(struct gpt_ent)) % secsz) |
| 141 | blocks++; |
| 142 | blocks++; /* Don't forget the header itself */ |
| 143 | } |
| 144 | |
| 145 | /* Never cross the median of the device. */ |
| 146 | if ((blocks + 1LL) > ((last + 1LL) >> 1)) |
| 147 | blocks = ((last + 1LL) >> 1) - 1LL; |
| 148 | |
| 149 | /* |
| 150 | * Get the amount of free space at the end of the device and |
| 151 | * calculate the size for the GPT structures. |
| 152 | */ |
| 153 | map = map_last(); |
| 154 | if (map->map_type != MAP_TYPE_UNUSED) { |
| 155 | warnx("%s: error: no room for the backup header", device_name); |
| 156 | return; |
| 157 | } |
| 158 | |
| 159 | if (map->map_size < blocks) |
| 160 | blocks = map->map_size; |
| 161 | if (blocks == 1LL) { |
| 162 | warnx("%s: error: no room for the GPT table", device_name); |
| 163 | return; |
| 164 | } |
| 165 | |
| 166 | blocks--; /* Number of blocks in the GPT table. */ |
| 167 | gpt = map_add(1LL, 1LL, MAP_TYPE_PRI_GPT_HDR, calloc(1, secsz)); |
| 168 | tbl = map_add(2LL, blocks, MAP_TYPE_PRI_GPT_TBL, |
| 169 | calloc(blocks, secsz)); |
| 170 | if (gpt == NULL || tbl == NULL) |
| 171 | return; |
| 172 | |
| 173 | hdr = gpt->map_data; |
| 174 | memcpy(hdr->hdr_sig, GPT_HDR_SIG, sizeof(hdr->hdr_sig)); |
| 175 | hdr->hdr_revision = htole32(GPT_HDR_REVISION); |
| 176 | /* |
| 177 | * XXX struct gpt_hdr is not a multiple of 8 bytes in size and thus |
| 178 | * contains padding we must not include in the size. |
| 179 | */ |
| 180 | hdr->hdr_size = htole32(offsetof(struct gpt_hdr, padding)); |
| 181 | hdr->hdr_lba_self = htole64(gpt->map_start); |
| 182 | hdr->hdr_lba_alt = htole64(last); |
| 183 | hdr->hdr_lba_start = htole64(tbl->map_start + blocks); |
| 184 | hdr->hdr_lba_end = htole64(last - blocks - 1LL); |
| 185 | uuid_create(&uuid, NULL); |
| 186 | le_uuid_enc(&hdr->hdr_uuid, &uuid); |
| 187 | hdr->hdr_lba_table = htole64(tbl->map_start); |
| 188 | hdr->hdr_entries = htole32((blocks * secsz) / sizeof(struct gpt_ent)); |
| 189 | if (le32toh(hdr->hdr_entries) > parts) |
| 190 | hdr->hdr_entries = htole32(parts); |
| 191 | hdr->hdr_entsz = htole32(sizeof(struct gpt_ent)); |
| 192 | |
| 193 | ent = tbl->map_data; |
| 194 | for (i = 0; i < le32toh(hdr->hdr_entries); i++) { |
| 195 | uuid_create(&uuid, NULL); |
| 196 | le_uuid_enc(&ent[i].ent_uuid, &uuid); |
| 197 | } |
| 198 | |
| 199 | hdr->hdr_crc_table = htole32(crc32(ent, le32toh(hdr->hdr_entries) * |
| 200 | le32toh(hdr->hdr_entsz))); |
| 201 | hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); |
| 202 | |
| 203 | gpt_write(fd, gpt); |
| 204 | gpt_write(fd, tbl); |
| 205 | |
| 206 | /* |
| 207 | * Create backup GPT if the user didn't suppress it. |
| 208 | */ |
| 209 | if (!primary_only) { |
| 210 | tpg = map_add(last, 1LL, MAP_TYPE_SEC_GPT_HDR, |
| 211 | calloc(1, secsz)); |
| 212 | lbt = map_add(last - blocks, blocks, MAP_TYPE_SEC_GPT_TBL, |
| 213 | tbl->map_data); |
| 214 | memcpy(tpg->map_data, gpt->map_data, secsz); |
| 215 | hdr = tpg->map_data; |
| 216 | hdr->hdr_lba_self = htole64(tpg->map_start); |
| 217 | hdr->hdr_lba_alt = htole64(gpt->map_start); |
| 218 | hdr->hdr_lba_table = htole64(lbt->map_start); |
| 219 | hdr->hdr_crc_self = 0; /* Don't ever forget this! */ |
| 220 | hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); |
| 221 | gpt_write(fd, lbt); |
| 222 | gpt_write(fd, tpg); |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | static |
| 227 | void |
| 228 | dosys(const char *ctl, ...) |
| 229 | { |
| 230 | va_list va; |
| 231 | char *scmd; |
| 232 | |
| 233 | va_start(va, ctl); |
| 234 | vasprintf(&scmd, ctl, va); |
| 235 | va_end(va); |
| 236 | printf("%s\n", scmd); |
| 237 | if (system(scmd) != 0) { |
| 238 | fprintf(stderr, "Execution failed\n"); |
| 239 | free(scmd); |
| 240 | exit(1); |
| 241 | } |
| 242 | free(scmd); |
| 243 | } |
| 244 | |
| 245 | int |
| 246 | cmd_create(int argc, char *argv[]) |
| 247 | { |
| 248 | int ch, fd; |
| 249 | |
| 250 | while ((ch = getopt(argc, argv, "fp")) != -1) { |
| 251 | switch(ch) { |
| 252 | case 'f': |
| 253 | force = 1; |
| 254 | break; |
| 255 | case 'p': |
| 256 | primary_only = 1; |
| 257 | break; |
| 258 | default: |
| 259 | usage_create(); |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | if (argc == optind) |
| 264 | usage_create(); |
| 265 | |
| 266 | while (optind < argc) { |
| 267 | fd = gpt_open(argv[optind++]); |
| 268 | if (fd == -1) { |
| 269 | warn("unable to open device '%s'", device_name); |
| 270 | continue; |
| 271 | } |
| 272 | |
| 273 | create(fd); |
| 274 | |
| 275 | gpt_close(fd); |
| 276 | } |
| 277 | |
| 278 | return (0); |
| 279 | } |
| 280 | |
| 281 | /* |
| 282 | * init |
| 283 | * |
| 284 | * Create a fresh gpt partition table and populate it with reasonable |
| 285 | * defaults. |
| 286 | */ |
| 287 | int |
| 288 | cmd_init(int argc, char *argv[]) |
| 289 | { |
| 290 | int ch, fd; |
| 291 | int with_boot = 0; |
| 292 | int with_trim = 0; |
| 293 | |
| 294 | while ((ch = getopt(argc, argv, "fBEI")) != -1) { |
| 295 | switch(ch) { |
| 296 | case 'f': |
| 297 | force = 1; |
| 298 | break; |
| 299 | case 'I': |
| 300 | fprintf(stderr, "Maybe you were trying to supply " |
| 301 | "fdisk options. This is the gpt " |
| 302 | "program\n"); |
| 303 | usage_init(); |
| 304 | /* NOT REACHED */ |
| 305 | break; |
| 306 | case 'E': |
| 307 | with_trim = 1; |
| 308 | break; |
| 309 | case 'B': |
| 310 | with_boot = 1; |
| 311 | break; |
| 312 | default: |
| 313 | usage_init(); |
| 314 | /* NOT REACHED */ |
| 315 | break; |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | if (argc == optind) { |
| 320 | usage_init(); |
| 321 | /* NOT REACHED */ |
| 322 | } |
| 323 | |
| 324 | while (optind < argc) { |
| 325 | const char *path = argv[optind++]; |
| 326 | char *slice0; |
| 327 | char *slice1; |
| 328 | |
| 329 | /* |
| 330 | * Destroy and [re]Create the gpt |
| 331 | */ |
| 332 | fd = gpt_open(path); |
| 333 | if (fd == -1) { |
| 334 | warn("unable to open device '%s'", path); |
| 335 | continue; |
| 336 | } |
| 337 | if (with_trim) { |
| 338 | do_erase(fd); |
| 339 | gpt_close(fd); |
| 340 | sleep(1); |
| 341 | fd = gpt_open(path); |
| 342 | if (fd == -1) { |
| 343 | warn("unable to reopen device '%s'", path); |
| 344 | continue; |
| 345 | } |
| 346 | } |
| 347 | do_destroy(fd); |
| 348 | gpt_close(fd); |
| 349 | sleep(1); |
| 350 | |
| 351 | fd = gpt_open(path); |
| 352 | if (fd == -1) { |
| 353 | warn("unable to open device '%s'", device_name); |
| 354 | continue; |
| 355 | } |
| 356 | create(fd); |
| 357 | add_defaults(fd); |
| 358 | gpt_close(fd); |
| 359 | sleep(1); |
| 360 | |
| 361 | /* |
| 362 | * Setup slices |
| 363 | */ |
| 364 | if (strstr(device_name, "serno")) |
| 365 | asprintf(&slice0, "%s.s0", device_name); |
| 366 | else |
| 367 | asprintf(&slice0, "%ss0", device_name); |
| 368 | |
| 369 | if (strstr(device_name, "serno")) |
| 370 | asprintf(&slice1, "%s.s1", device_name); |
| 371 | else |
| 372 | asprintf(&slice1, "%ss1", device_name); |
| 373 | |
| 374 | /* |
| 375 | * Label slice1 |
| 376 | */ |
| 377 | dosys("disklabel -r -w %s %s auto", |
| 378 | (with_boot ? "-B" : ""), |
| 379 | slice1); |
| 380 | sleep(1); |
| 381 | |
| 382 | /* |
| 383 | * newfs_msdos slice0 |
| 384 | */ |
| 385 | dosys("newfs_msdos %s", slice0); |
| 386 | |
| 387 | /* |
| 388 | * If asked to setup an EFI boot, mount the dos partition |
| 389 | * and copy a file. |
| 390 | * |
| 391 | * We do not setup the dragonfly disklabel with -B |
| 392 | */ |
| 393 | if (with_boot) { |
| 394 | char *mtpt; |
| 395 | |
| 396 | srandomdev(); |
| 397 | asprintf(&mtpt, "/tmp/gpt%08x%08x", |
| 398 | (int)random(), (int)random()); |
| 399 | if (mkdir(mtpt, 0700) < 0) { |
| 400 | fprintf(stderr, "cannot mkdir %s\n", mtpt); |
| 401 | exit(1); |
| 402 | } |
| 403 | |
| 404 | dosys("mount_msdos %s %s", slice0, mtpt); |
| 405 | dosys("mkdir -p %s/efi/boot", mtpt); |
| 406 | dosys("cpdup /boot/boot1.efi %s/efi/boot/bootx64.efi", |
| 407 | mtpt); |
| 408 | dosys("umount %s", mtpt); |
| 409 | } |
| 410 | |
| 411 | free(slice0); |
| 412 | free(slice1); |
| 413 | } |
| 414 | |
| 415 | return (0); |
| 416 | } |
| 417 | |
| 418 | static void |
| 419 | do_erase(int fd) |
| 420 | { |
| 421 | off_t ioarg[2]; |
| 422 | |
| 423 | ioarg[0] = 0; |
| 424 | ioarg[1] = mediasz; |
| 425 | |
| 426 | if (ioctl(fd, DAIOCTRIM, ioarg) < 0) { |
| 427 | printf("Trim error %s\n", strerror(errno)); |
| 428 | printf("Continuing\n"); |
| 429 | } else { |
| 430 | printf("Trim completed ok\n"); |
| 431 | } |
| 432 | } |