1 /*- 2 * Copyright (c) 2006-2008 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/apm.h> 32 #include <sys/bio.h> 33 #include <sys/endian.h> 34 #include <sys/kernel.h> 35 #include <sys/kobj.h> 36 #include <sys/limits.h> 37 #include <sys/lock.h> 38 #include <sys/malloc.h> 39 #include <sys/mutex.h> 40 #include <sys/queue.h> 41 #include <sys/sbuf.h> 42 #include <sys/systm.h> 43 #include <sys/sysctl.h> 44 #include <geom/geom.h> 45 #include <geom/geom_int.h> 46 #include <geom/part/g_part.h> 47 48 #include "g_part_if.h" 49 50 FEATURE(geom_part_apm, "GEOM partitioning class for Apple-style partitions"); 51 52 struct g_part_apm_table { 53 struct g_part_table base; 54 struct apm_ddr ddr; 55 struct apm_ent self; 56 int tivo_series1; 57 }; 58 59 struct g_part_apm_entry { 60 struct g_part_entry base; 61 struct apm_ent ent; 62 }; 63 64 static int g_part_apm_add(struct g_part_table *, struct g_part_entry *, 65 struct g_part_parms *); 66 static int g_part_apm_create(struct g_part_table *, struct g_part_parms *); 67 static int g_part_apm_destroy(struct g_part_table *, struct g_part_parms *); 68 static void g_part_apm_dumpconf(struct g_part_table *, struct g_part_entry *, 69 struct sbuf *, const char *); 70 static int g_part_apm_dumpto(struct g_part_table *, struct g_part_entry *); 71 static int g_part_apm_modify(struct g_part_table *, struct g_part_entry *, 72 struct g_part_parms *); 73 static const char *g_part_apm_name(struct g_part_table *, struct g_part_entry *, 74 char *, size_t); 75 static int g_part_apm_probe(struct g_part_table *, struct g_consumer *); 76 static int g_part_apm_read(struct g_part_table *, struct g_consumer *); 77 static const char *g_part_apm_type(struct g_part_table *, struct g_part_entry *, 78 char *, size_t); 79 static int g_part_apm_write(struct g_part_table *, struct g_consumer *); 80 static int g_part_apm_resize(struct g_part_table *, struct g_part_entry *, 81 struct g_part_parms *); 82 83 static kobj_method_t g_part_apm_methods[] = { 84 KOBJMETHOD(g_part_add, g_part_apm_add), 85 KOBJMETHOD(g_part_create, g_part_apm_create), 86 KOBJMETHOD(g_part_destroy, g_part_apm_destroy), 87 KOBJMETHOD(g_part_dumpconf, g_part_apm_dumpconf), 88 KOBJMETHOD(g_part_dumpto, g_part_apm_dumpto), 89 KOBJMETHOD(g_part_modify, g_part_apm_modify), 90 KOBJMETHOD(g_part_resize, g_part_apm_resize), 91 KOBJMETHOD(g_part_name, g_part_apm_name), 92 KOBJMETHOD(g_part_probe, g_part_apm_probe), 93 KOBJMETHOD(g_part_read, g_part_apm_read), 94 KOBJMETHOD(g_part_type, g_part_apm_type), 95 KOBJMETHOD(g_part_write, g_part_apm_write), 96 { 0, 0 } 97 }; 98 99 static struct g_part_scheme g_part_apm_scheme = { 100 "APM", 101 g_part_apm_methods, 102 sizeof(struct g_part_apm_table), 103 .gps_entrysz = sizeof(struct g_part_apm_entry), 104 .gps_minent = 16, 105 .gps_maxent = 4096, 106 }; 107 G_PART_SCHEME_DECLARE(g_part_apm); 108 109 static void 110 swab(char *buf, size_t bufsz) 111 { 112 int i; 113 char ch; 114 115 for (i = 0; i < bufsz; i += 2) { 116 ch = buf[i]; 117 buf[i] = buf[i + 1]; 118 buf[i + 1] = ch; 119 } 120 } 121 122 static int 123 apm_parse_type(const char *type, char *buf, size_t bufsz) 124 { 125 const char *alias; 126 127 if (type[0] == '!') { 128 type++; 129 if (strlen(type) > bufsz) 130 return (EINVAL); 131 if (!strcmp(type, APM_ENT_TYPE_SELF) || 132 !strcmp(type, APM_ENT_TYPE_UNUSED)) 133 return (EINVAL); 134 strncpy(buf, type, bufsz); 135 return (0); 136 } 137 alias = g_part_alias_name(G_PART_ALIAS_APPLE_BOOT); 138 if (!strcasecmp(type, alias)) { 139 strcpy(buf, APM_ENT_TYPE_APPLE_BOOT); 140 return (0); 141 } 142 alias = g_part_alias_name(G_PART_ALIAS_APPLE_HFS); 143 if (!strcasecmp(type, alias)) { 144 strcpy(buf, APM_ENT_TYPE_APPLE_HFS); 145 return (0); 146 } 147 alias = g_part_alias_name(G_PART_ALIAS_APPLE_UFS); 148 if (!strcasecmp(type, alias)) { 149 strcpy(buf, APM_ENT_TYPE_APPLE_UFS); 150 return (0); 151 } 152 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_BOOT); 153 if (!strcasecmp(type, alias)) { 154 strcpy(buf, APM_ENT_TYPE_APPLE_BOOT); 155 return (0); 156 } 157 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD); 158 if (!strcasecmp(type, alias)) { 159 strcpy(buf, APM_ENT_TYPE_FREEBSD); 160 return (0); 161 } 162 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_NANDFS); 163 if (!strcasecmp(type, alias)) { 164 strcpy(buf, APM_ENT_TYPE_FREEBSD_NANDFS); 165 return (0); 166 } 167 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP); 168 if (!strcasecmp(type, alias)) { 169 strcpy(buf, APM_ENT_TYPE_FREEBSD_SWAP); 170 return (0); 171 } 172 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS); 173 if (!strcasecmp(type, alias)) { 174 strcpy(buf, APM_ENT_TYPE_FREEBSD_UFS); 175 return (0); 176 } 177 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM); 178 if (!strcasecmp(type, alias)) { 179 strcpy(buf, APM_ENT_TYPE_FREEBSD_VINUM); 180 return (0); 181 } 182 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_ZFS); 183 if (!strcasecmp(type, alias)) { 184 strcpy(buf, APM_ENT_TYPE_FREEBSD_ZFS); 185 return (0); 186 } 187 return (EINVAL); 188 } 189 190 static int 191 apm_read_ent(struct g_consumer *cp, uint32_t blk, struct apm_ent *ent, 192 int tivo_series1) 193 { 194 struct g_provider *pp; 195 char *buf; 196 int error; 197 198 pp = cp->provider; 199 buf = g_read_data(cp, pp->sectorsize * blk, pp->sectorsize, &error); 200 if (buf == NULL) 201 return (error); 202 if (tivo_series1) 203 swab(buf, pp->sectorsize); 204 ent->ent_sig = be16dec(buf); 205 ent->ent_pmblkcnt = be32dec(buf + 4); 206 ent->ent_start = be32dec(buf + 8); 207 ent->ent_size = be32dec(buf + 12); 208 bcopy(buf + 16, ent->ent_name, sizeof(ent->ent_name)); 209 bcopy(buf + 48, ent->ent_type, sizeof(ent->ent_type)); 210 g_free(buf); 211 return (0); 212 } 213 214 static int 215 g_part_apm_add(struct g_part_table *basetable, struct g_part_entry *baseentry, 216 struct g_part_parms *gpp) 217 { 218 struct g_part_apm_entry *entry; 219 struct g_part_apm_table *table; 220 int error; 221 222 entry = (struct g_part_apm_entry *)baseentry; 223 table = (struct g_part_apm_table *)basetable; 224 entry->ent.ent_sig = APM_ENT_SIG; 225 entry->ent.ent_pmblkcnt = table->self.ent_pmblkcnt; 226 entry->ent.ent_start = gpp->gpp_start; 227 entry->ent.ent_size = gpp->gpp_size; 228 if (baseentry->gpe_deleted) { 229 bzero(entry->ent.ent_type, sizeof(entry->ent.ent_type)); 230 bzero(entry->ent.ent_name, sizeof(entry->ent.ent_name)); 231 } 232 error = apm_parse_type(gpp->gpp_type, entry->ent.ent_type, 233 sizeof(entry->ent.ent_type)); 234 if (error) 235 return (error); 236 if (gpp->gpp_parms & G_PART_PARM_LABEL) { 237 if (strlen(gpp->gpp_label) > sizeof(entry->ent.ent_name)) 238 return (EINVAL); 239 strncpy(entry->ent.ent_name, gpp->gpp_label, 240 sizeof(entry->ent.ent_name)); 241 } 242 if (baseentry->gpe_index >= table->self.ent_pmblkcnt) 243 table->self.ent_pmblkcnt = baseentry->gpe_index + 1; 244 KASSERT(table->self.ent_size >= table->self.ent_pmblkcnt, 245 ("%s", __func__)); 246 KASSERT(table->self.ent_size > baseentry->gpe_index, 247 ("%s", __func__)); 248 return (0); 249 } 250 251 static int 252 g_part_apm_create(struct g_part_table *basetable, struct g_part_parms *gpp) 253 { 254 struct g_provider *pp; 255 struct g_part_apm_table *table; 256 uint32_t last; 257 258 /* We don't nest, which means that our depth should be 0. */ 259 if (basetable->gpt_depth != 0) 260 return (ENXIO); 261 262 table = (struct g_part_apm_table *)basetable; 263 pp = gpp->gpp_provider; 264 if (pp->sectorsize != 512 || 265 pp->mediasize < (2 + 2 * basetable->gpt_entries) * pp->sectorsize) 266 return (ENOSPC); 267 268 /* APM uses 32-bit LBAs. */ 269 last = MIN(pp->mediasize / pp->sectorsize, UINT32_MAX) - 1; 270 271 basetable->gpt_first = 2 + basetable->gpt_entries; 272 basetable->gpt_last = last; 273 274 table->ddr.ddr_sig = APM_DDR_SIG; 275 table->ddr.ddr_blksize = pp->sectorsize; 276 table->ddr.ddr_blkcount = last + 1; 277 278 table->self.ent_sig = APM_ENT_SIG; 279 table->self.ent_pmblkcnt = basetable->gpt_entries + 1; 280 table->self.ent_start = 1; 281 table->self.ent_size = table->self.ent_pmblkcnt; 282 strcpy(table->self.ent_name, "Apple"); 283 strcpy(table->self.ent_type, APM_ENT_TYPE_SELF); 284 return (0); 285 } 286 287 static int 288 g_part_apm_destroy(struct g_part_table *basetable, struct g_part_parms *gpp) 289 { 290 291 /* Wipe the first 2 sectors to clear the partitioning. */ 292 basetable->gpt_smhead |= 3; 293 return (0); 294 } 295 296 static void 297 g_part_apm_dumpconf(struct g_part_table *table, struct g_part_entry *baseentry, 298 struct sbuf *sb, const char *indent) 299 { 300 union { 301 char name[APM_ENT_NAMELEN + 1]; 302 char type[APM_ENT_TYPELEN + 1]; 303 } u; 304 struct g_part_apm_entry *entry; 305 306 entry = (struct g_part_apm_entry *)baseentry; 307 if (indent == NULL) { 308 /* conftxt: libdisk compatibility */ 309 sbuf_printf(sb, " xs APPLE xt %s", entry->ent.ent_type); 310 } else if (entry != NULL) { 311 /* confxml: partition entry information */ 312 strncpy(u.name, entry->ent.ent_name, APM_ENT_NAMELEN); 313 u.name[APM_ENT_NAMELEN] = '\0'; 314 sbuf_printf(sb, "%s<label>", indent); 315 g_conf_printf_escaped(sb, "%s", u.name); 316 sbuf_printf(sb, "</label>\n"); 317 strncpy(u.type, entry->ent.ent_type, APM_ENT_TYPELEN); 318 u.type[APM_ENT_TYPELEN] = '\0'; 319 sbuf_printf(sb, "%s<rawtype>", indent); 320 g_conf_printf_escaped(sb, "%s", u.type); 321 sbuf_printf(sb, "</rawtype>\n"); 322 } else { 323 /* confxml: scheme information */ 324 } 325 } 326 327 static int 328 g_part_apm_dumpto(struct g_part_table *table, struct g_part_entry *baseentry) 329 { 330 struct g_part_apm_entry *entry; 331 332 entry = (struct g_part_apm_entry *)baseentry; 333 return ((!strcmp(entry->ent.ent_type, APM_ENT_TYPE_FREEBSD_SWAP)) 334 ? 1 : 0); 335 } 336 337 static int 338 g_part_apm_modify(struct g_part_table *basetable, 339 struct g_part_entry *baseentry, struct g_part_parms *gpp) 340 { 341 struct g_part_apm_entry *entry; 342 int error; 343 344 entry = (struct g_part_apm_entry *)baseentry; 345 if (gpp->gpp_parms & G_PART_PARM_LABEL) { 346 if (strlen(gpp->gpp_label) > sizeof(entry->ent.ent_name)) 347 return (EINVAL); 348 } 349 if (gpp->gpp_parms & G_PART_PARM_TYPE) { 350 error = apm_parse_type(gpp->gpp_type, entry->ent.ent_type, 351 sizeof(entry->ent.ent_type)); 352 if (error) 353 return (error); 354 } 355 if (gpp->gpp_parms & G_PART_PARM_LABEL) { 356 strncpy(entry->ent.ent_name, gpp->gpp_label, 357 sizeof(entry->ent.ent_name)); 358 } 359 return (0); 360 } 361 362 static int 363 g_part_apm_resize(struct g_part_table *basetable, 364 struct g_part_entry *baseentry, struct g_part_parms *gpp) 365 { 366 struct g_part_apm_entry *entry; 367 struct g_provider *pp; 368 369 if (baseentry == NULL) { 370 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider; 371 basetable->gpt_last = MIN(pp->mediasize / pp->sectorsize, 372 UINT32_MAX) - 1; 373 return (0); 374 } 375 376 entry = (struct g_part_apm_entry *)baseentry; 377 baseentry->gpe_end = baseentry->gpe_start + gpp->gpp_size - 1; 378 entry->ent.ent_size = gpp->gpp_size; 379 380 return (0); 381 } 382 383 static const char * 384 g_part_apm_name(struct g_part_table *table, struct g_part_entry *baseentry, 385 char *buf, size_t bufsz) 386 { 387 388 snprintf(buf, bufsz, "s%d", baseentry->gpe_index + 1); 389 return (buf); 390 } 391 392 static int 393 g_part_apm_probe(struct g_part_table *basetable, struct g_consumer *cp) 394 { 395 struct g_provider *pp; 396 struct g_part_apm_table *table; 397 char *buf; 398 int error; 399 400 /* We don't nest, which means that our depth should be 0. */ 401 if (basetable->gpt_depth != 0) 402 return (ENXIO); 403 404 table = (struct g_part_apm_table *)basetable; 405 table->tivo_series1 = 0; 406 pp = cp->provider; 407 408 /* Sanity-check the provider. */ 409 if (pp->mediasize < 4 * pp->sectorsize) 410 return (ENOSPC); 411 412 /* Check that there's a Driver Descriptor Record (DDR). */ 413 buf = g_read_data(cp, 0L, pp->sectorsize, &error); 414 if (buf == NULL) 415 return (error); 416 if (be16dec(buf) == APM_DDR_SIG) { 417 /* Normal Apple DDR */ 418 table->ddr.ddr_sig = be16dec(buf); 419 table->ddr.ddr_blksize = be16dec(buf + 2); 420 table->ddr.ddr_blkcount = be32dec(buf + 4); 421 g_free(buf); 422 if (table->ddr.ddr_blksize != pp->sectorsize) 423 return (ENXIO); 424 if (table->ddr.ddr_blkcount > pp->mediasize / pp->sectorsize) 425 return (ENXIO); 426 } else { 427 /* 428 * Check for Tivo drives, which have no DDR and a different 429 * signature. Those whose first two bytes are 14 92 are 430 * Series 2 drives, and aren't supported. Those that start 431 * with 92 14 are series 1 drives and are supported. 432 */ 433 if (be16dec(buf) != 0x9214) { 434 /* If this is 0x1492 it could be a series 2 drive */ 435 g_free(buf); 436 return (ENXIO); 437 } 438 table->ddr.ddr_sig = APM_DDR_SIG; /* XXX */ 439 table->ddr.ddr_blksize = pp->sectorsize; /* XXX */ 440 table->ddr.ddr_blkcount = 441 MIN(pp->mediasize / pp->sectorsize, UINT32_MAX); 442 table->tivo_series1 = 1; 443 g_free(buf); 444 } 445 446 /* Check that there's a Partition Map. */ 447 error = apm_read_ent(cp, 1, &table->self, table->tivo_series1); 448 if (error) 449 return (error); 450 if (table->self.ent_sig != APM_ENT_SIG) 451 return (ENXIO); 452 if (strcmp(table->self.ent_type, APM_ENT_TYPE_SELF)) 453 return (ENXIO); 454 if (table->self.ent_pmblkcnt >= table->ddr.ddr_blkcount) 455 return (ENXIO); 456 return (G_PART_PROBE_PRI_NORM); 457 } 458 459 static int 460 g_part_apm_read(struct g_part_table *basetable, struct g_consumer *cp) 461 { 462 struct apm_ent ent; 463 struct g_part_apm_entry *entry; 464 struct g_part_apm_table *table; 465 int error, index; 466 467 table = (struct g_part_apm_table *)basetable; 468 469 basetable->gpt_first = table->self.ent_size + 1; 470 basetable->gpt_last = table->ddr.ddr_blkcount - 1; 471 basetable->gpt_entries = table->self.ent_size - 1; 472 473 for (index = table->self.ent_pmblkcnt - 1; index > 0; index--) { 474 error = apm_read_ent(cp, index + 1, &ent, table->tivo_series1); 475 if (error) 476 continue; 477 if (!strcmp(ent.ent_type, APM_ENT_TYPE_UNUSED)) 478 continue; 479 entry = (struct g_part_apm_entry *)g_part_new_entry(basetable, 480 index, ent.ent_start, ent.ent_start + ent.ent_size - 1); 481 entry->ent = ent; 482 } 483 484 return (0); 485 } 486 487 static const char * 488 g_part_apm_type(struct g_part_table *basetable, struct g_part_entry *baseentry, 489 char *buf, size_t bufsz) 490 { 491 struct g_part_apm_entry *entry; 492 const char *type; 493 size_t len; 494 495 entry = (struct g_part_apm_entry *)baseentry; 496 type = entry->ent.ent_type; 497 if (!strcmp(type, APM_ENT_TYPE_APPLE_BOOT)) 498 return (g_part_alias_name(G_PART_ALIAS_APPLE_BOOT)); 499 if (!strcmp(type, APM_ENT_TYPE_APPLE_HFS)) 500 return (g_part_alias_name(G_PART_ALIAS_APPLE_HFS)); 501 if (!strcmp(type, APM_ENT_TYPE_APPLE_UFS)) 502 return (g_part_alias_name(G_PART_ALIAS_APPLE_UFS)); 503 if (!strcmp(type, APM_ENT_TYPE_FREEBSD)) 504 return (g_part_alias_name(G_PART_ALIAS_FREEBSD)); 505 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_NANDFS)) 506 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_NANDFS)); 507 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_SWAP)) 508 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP)); 509 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_UFS)) 510 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS)); 511 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_VINUM)) 512 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM)); 513 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_ZFS)) 514 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_ZFS)); 515 buf[0] = '!'; 516 len = MIN(sizeof(entry->ent.ent_type), bufsz - 2); 517 bcopy(type, buf + 1, len); 518 buf[len + 1] = '\0'; 519 return (buf); 520 } 521 522 static int 523 g_part_apm_write(struct g_part_table *basetable, struct g_consumer *cp) 524 { 525 struct g_provider *pp; 526 struct g_part_entry *baseentry; 527 struct g_part_apm_entry *entry; 528 struct g_part_apm_table *table; 529 char *buf, *ptr; 530 uint32_t index; 531 int error; 532 size_t tblsz; 533 534 pp = cp->provider; 535 table = (struct g_part_apm_table *)basetable; 536 /* 537 * Tivo Series 1 disk partitions are currently read-only. 538 */ 539 if (table->tivo_series1) 540 return (EOPNOTSUPP); 541 542 /* Write the DDR only when we're newly created. */ 543 if (basetable->gpt_created) { 544 buf = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO); 545 be16enc(buf, table->ddr.ddr_sig); 546 be16enc(buf + 2, table->ddr.ddr_blksize); 547 be32enc(buf + 4, table->ddr.ddr_blkcount); 548 error = g_write_data(cp, 0, buf, pp->sectorsize); 549 g_free(buf); 550 if (error) 551 return (error); 552 } 553 554 /* Allocate the buffer for all entries */ 555 tblsz = table->self.ent_pmblkcnt; 556 buf = g_malloc(tblsz * pp->sectorsize, M_WAITOK | M_ZERO); 557 558 /* Fill the self entry */ 559 be16enc(buf, APM_ENT_SIG); 560 be32enc(buf + 4, table->self.ent_pmblkcnt); 561 be32enc(buf + 8, table->self.ent_start); 562 be32enc(buf + 12, table->self.ent_size); 563 bcopy(table->self.ent_name, buf + 16, sizeof(table->self.ent_name)); 564 bcopy(table->self.ent_type, buf + 48, sizeof(table->self.ent_type)); 565 566 baseentry = LIST_FIRST(&basetable->gpt_entry); 567 for (index = 1; index < tblsz; index++) { 568 entry = (baseentry != NULL && index == baseentry->gpe_index) 569 ? (struct g_part_apm_entry *)baseentry : NULL; 570 ptr = buf + index * pp->sectorsize; 571 be16enc(ptr, APM_ENT_SIG); 572 be32enc(ptr + 4, table->self.ent_pmblkcnt); 573 if (entry != NULL && !baseentry->gpe_deleted) { 574 be32enc(ptr + 8, entry->ent.ent_start); 575 be32enc(ptr + 12, entry->ent.ent_size); 576 bcopy(entry->ent.ent_name, ptr + 16, 577 sizeof(entry->ent.ent_name)); 578 bcopy(entry->ent.ent_type, ptr + 48, 579 sizeof(entry->ent.ent_type)); 580 } else { 581 strcpy(ptr + 48, APM_ENT_TYPE_UNUSED); 582 } 583 if (entry != NULL) 584 baseentry = LIST_NEXT(baseentry, gpe_entry); 585 } 586 587 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) { 588 error = g_write_data(cp, (1 + index) * pp->sectorsize, 589 buf + index * pp->sectorsize, 590 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS: 591 (tblsz - index) * pp->sectorsize); 592 if (error) { 593 g_free(buf); 594 return (error); 595 } 596 } 597 g_free(buf); 598 return (0); 599 } 600