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