g_part_apm.c revision 271636
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: stable/10/sys/geom/part/g_part_apm.c 271636 2014-09-15 17:49:46Z emaste $"); 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 50FEATURE(geom_part_apm, "GEOM partitioning class for Apple-style partitions"); 51 52struct 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 59struct g_part_apm_entry { 60 struct g_part_entry base; 61 struct apm_ent ent; 62}; 63 64static int g_part_apm_add(struct g_part_table *, struct g_part_entry *, 65 struct g_part_parms *); 66static int g_part_apm_create(struct g_part_table *, struct g_part_parms *); 67static int g_part_apm_destroy(struct g_part_table *, struct g_part_parms *); 68static void g_part_apm_dumpconf(struct g_part_table *, struct g_part_entry *, 69 struct sbuf *, const char *); 70static int g_part_apm_dumpto(struct g_part_table *, struct g_part_entry *); 71static int g_part_apm_modify(struct g_part_table *, struct g_part_entry *, 72 struct g_part_parms *); 73static const char *g_part_apm_name(struct g_part_table *, struct g_part_entry *, 74 char *, size_t); 75static int g_part_apm_probe(struct g_part_table *, struct g_consumer *); 76static int g_part_apm_read(struct g_part_table *, struct g_consumer *); 77static const char *g_part_apm_type(struct g_part_table *, struct g_part_entry *, 78 char *, size_t); 79static int g_part_apm_write(struct g_part_table *, struct g_consumer *); 80static int g_part_apm_resize(struct g_part_table *, struct g_part_entry *, 81 struct g_part_parms *); 82 83static 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 99static 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}; 107G_PART_SCHEME_DECLARE(g_part_apm); 108 109static void 110swab(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 122static int 123apm_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); 153 if (!strcasecmp(type, alias)) { 154 strcpy(buf, APM_ENT_TYPE_FREEBSD); 155 return (0); 156 } 157 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_NANDFS); 158 if (!strcasecmp(type, alias)) { 159 strcpy(buf, APM_ENT_TYPE_FREEBSD_NANDFS); 160 return (0); 161 } 162 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP); 163 if (!strcasecmp(type, alias)) { 164 strcpy(buf, APM_ENT_TYPE_FREEBSD_SWAP); 165 return (0); 166 } 167 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS); 168 if (!strcasecmp(type, alias)) { 169 strcpy(buf, APM_ENT_TYPE_FREEBSD_UFS); 170 return (0); 171 } 172 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM); 173 if (!strcasecmp(type, alias)) { 174 strcpy(buf, APM_ENT_TYPE_FREEBSD_VINUM); 175 return (0); 176 } 177 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_ZFS); 178 if (!strcasecmp(type, alias)) { 179 strcpy(buf, APM_ENT_TYPE_FREEBSD_ZFS); 180 return (0); 181 } 182 return (EINVAL); 183} 184 185static int 186apm_read_ent(struct g_consumer *cp, uint32_t blk, struct apm_ent *ent, 187 int tivo_series1) 188{ 189 struct g_provider *pp; 190 char *buf; 191 int error; 192 193 pp = cp->provider; 194 buf = g_read_data(cp, pp->sectorsize * blk, pp->sectorsize, &error); 195 if (buf == NULL) 196 return (error); 197 if (tivo_series1) 198 swab(buf, pp->sectorsize); 199 ent->ent_sig = be16dec(buf); 200 ent->ent_pmblkcnt = be32dec(buf + 4); 201 ent->ent_start = be32dec(buf + 8); 202 ent->ent_size = be32dec(buf + 12); 203 bcopy(buf + 16, ent->ent_name, sizeof(ent->ent_name)); 204 bcopy(buf + 48, ent->ent_type, sizeof(ent->ent_type)); 205 g_free(buf); 206 return (0); 207} 208 209static int 210g_part_apm_add(struct g_part_table *basetable, struct g_part_entry *baseentry, 211 struct g_part_parms *gpp) 212{ 213 struct g_part_apm_entry *entry; 214 struct g_part_apm_table *table; 215 int error; 216 217 entry = (struct g_part_apm_entry *)baseentry; 218 table = (struct g_part_apm_table *)basetable; 219 entry->ent.ent_sig = APM_ENT_SIG; 220 entry->ent.ent_pmblkcnt = table->self.ent_pmblkcnt; 221 entry->ent.ent_start = gpp->gpp_start; 222 entry->ent.ent_size = gpp->gpp_size; 223 if (baseentry->gpe_deleted) { 224 bzero(entry->ent.ent_type, sizeof(entry->ent.ent_type)); 225 bzero(entry->ent.ent_name, sizeof(entry->ent.ent_name)); 226 } 227 error = apm_parse_type(gpp->gpp_type, entry->ent.ent_type, 228 sizeof(entry->ent.ent_type)); 229 if (error) 230 return (error); 231 if (gpp->gpp_parms & G_PART_PARM_LABEL) { 232 if (strlen(gpp->gpp_label) > sizeof(entry->ent.ent_name)) 233 return (EINVAL); 234 strncpy(entry->ent.ent_name, gpp->gpp_label, 235 sizeof(entry->ent.ent_name)); 236 } 237 if (baseentry->gpe_index >= table->self.ent_pmblkcnt) 238 table->self.ent_pmblkcnt = baseentry->gpe_index + 1; 239 KASSERT(table->self.ent_size >= table->self.ent_pmblkcnt, 240 ("%s", __func__)); 241 KASSERT(table->self.ent_size > baseentry->gpe_index, 242 ("%s", __func__)); 243 return (0); 244} 245 246static int 247g_part_apm_create(struct g_part_table *basetable, struct g_part_parms *gpp) 248{ 249 struct g_provider *pp; 250 struct g_part_apm_table *table; 251 uint32_t last; 252 253 /* We don't nest, which means that our depth should be 0. */ 254 if (basetable->gpt_depth != 0) 255 return (ENXIO); 256 257 table = (struct g_part_apm_table *)basetable; 258 pp = gpp->gpp_provider; 259 if (pp->sectorsize != 512 || 260 pp->mediasize < (2 + 2 * basetable->gpt_entries) * pp->sectorsize) 261 return (ENOSPC); 262 263 /* APM uses 32-bit LBAs. */ 264 last = MIN(pp->mediasize / pp->sectorsize, UINT32_MAX) - 1; 265 266 basetable->gpt_first = 2 + basetable->gpt_entries; 267 basetable->gpt_last = last; 268 269 table->ddr.ddr_sig = APM_DDR_SIG; 270 table->ddr.ddr_blksize = pp->sectorsize; 271 table->ddr.ddr_blkcount = last + 1; 272 273 table->self.ent_sig = APM_ENT_SIG; 274 table->self.ent_pmblkcnt = basetable->gpt_entries + 1; 275 table->self.ent_start = 1; 276 table->self.ent_size = table->self.ent_pmblkcnt; 277 strcpy(table->self.ent_name, "Apple"); 278 strcpy(table->self.ent_type, APM_ENT_TYPE_SELF); 279 return (0); 280} 281 282static int 283g_part_apm_destroy(struct g_part_table *basetable, struct g_part_parms *gpp) 284{ 285 286 /* Wipe the first 2 sectors to clear the partitioning. */ 287 basetable->gpt_smhead |= 3; 288 return (0); 289} 290 291static void 292g_part_apm_dumpconf(struct g_part_table *table, struct g_part_entry *baseentry, 293 struct sbuf *sb, const char *indent) 294{ 295 union { 296 char name[APM_ENT_NAMELEN + 1]; 297 char type[APM_ENT_TYPELEN + 1]; 298 } u; 299 struct g_part_apm_entry *entry; 300 301 entry = (struct g_part_apm_entry *)baseentry; 302 if (indent == NULL) { 303 /* conftxt: libdisk compatibility */ 304 sbuf_printf(sb, " xs APPLE xt %s", entry->ent.ent_type); 305 } else if (entry != NULL) { 306 /* confxml: partition entry information */ 307 strncpy(u.name, entry->ent.ent_name, APM_ENT_NAMELEN); 308 u.name[APM_ENT_NAMELEN] = '\0'; 309 sbuf_printf(sb, "%s<label>", indent); 310 g_conf_printf_escaped(sb, "%s", u.name); 311 sbuf_printf(sb, "</label>\n"); 312 strncpy(u.type, entry->ent.ent_type, APM_ENT_TYPELEN); 313 u.type[APM_ENT_TYPELEN] = '\0'; 314 sbuf_printf(sb, "%s<rawtype>", indent); 315 g_conf_printf_escaped(sb, "%s", u.type); 316 sbuf_printf(sb, "</rawtype>\n"); 317 } else { 318 /* confxml: scheme information */ 319 } 320} 321 322static int 323g_part_apm_dumpto(struct g_part_table *table, struct g_part_entry *baseentry) 324{ 325 struct g_part_apm_entry *entry; 326 327 entry = (struct g_part_apm_entry *)baseentry; 328 return ((!strcmp(entry->ent.ent_type, APM_ENT_TYPE_FREEBSD_SWAP)) 329 ? 1 : 0); 330} 331 332static int 333g_part_apm_modify(struct g_part_table *basetable, 334 struct g_part_entry *baseentry, struct g_part_parms *gpp) 335{ 336 struct g_part_apm_entry *entry; 337 int error; 338 339 entry = (struct g_part_apm_entry *)baseentry; 340 if (gpp->gpp_parms & G_PART_PARM_LABEL) { 341 if (strlen(gpp->gpp_label) > sizeof(entry->ent.ent_name)) 342 return (EINVAL); 343 } 344 if (gpp->gpp_parms & G_PART_PARM_TYPE) { 345 error = apm_parse_type(gpp->gpp_type, entry->ent.ent_type, 346 sizeof(entry->ent.ent_type)); 347 if (error) 348 return (error); 349 } 350 if (gpp->gpp_parms & G_PART_PARM_LABEL) { 351 strncpy(entry->ent.ent_name, gpp->gpp_label, 352 sizeof(entry->ent.ent_name)); 353 } 354 return (0); 355} 356 357static int 358g_part_apm_resize(struct g_part_table *basetable, 359 struct g_part_entry *baseentry, struct g_part_parms *gpp) 360{ 361 struct g_part_apm_entry *entry; 362 struct g_provider *pp; 363 364 if (baseentry == NULL) { 365 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider; 366 basetable->gpt_last = MIN(pp->mediasize / pp->sectorsize, 367 UINT32_MAX) - 1; 368 return (0); 369 } 370 371 entry = (struct g_part_apm_entry *)baseentry; 372 baseentry->gpe_end = baseentry->gpe_start + gpp->gpp_size - 1; 373 entry->ent.ent_size = gpp->gpp_size; 374 375 return (0); 376} 377 378static const char * 379g_part_apm_name(struct g_part_table *table, struct g_part_entry *baseentry, 380 char *buf, size_t bufsz) 381{ 382 383 snprintf(buf, bufsz, "s%d", baseentry->gpe_index + 1); 384 return (buf); 385} 386 387static int 388g_part_apm_probe(struct g_part_table *basetable, struct g_consumer *cp) 389{ 390 struct g_provider *pp; 391 struct g_part_apm_table *table; 392 char *buf; 393 int error; 394 395 /* We don't nest, which means that our depth should be 0. */ 396 if (basetable->gpt_depth != 0) 397 return (ENXIO); 398 399 table = (struct g_part_apm_table *)basetable; 400 table->tivo_series1 = 0; 401 pp = cp->provider; 402 403 /* Sanity-check the provider. */ 404 if (pp->mediasize < 4 * pp->sectorsize) 405 return (ENOSPC); 406 407 /* Check that there's a Driver Descriptor Record (DDR). */ 408 buf = g_read_data(cp, 0L, pp->sectorsize, &error); 409 if (buf == NULL) 410 return (error); 411 if (be16dec(buf) == APM_DDR_SIG) { 412 /* Normal Apple DDR */ 413 table->ddr.ddr_sig = be16dec(buf); 414 table->ddr.ddr_blksize = be16dec(buf + 2); 415 table->ddr.ddr_blkcount = be32dec(buf + 4); 416 g_free(buf); 417 if (table->ddr.ddr_blksize != pp->sectorsize) 418 return (ENXIO); 419 if (table->ddr.ddr_blkcount > pp->mediasize / pp->sectorsize) 420 return (ENXIO); 421 } else { 422 /* 423 * Check for Tivo drives, which have no DDR and a different 424 * signature. Those whose first two bytes are 14 92 are 425 * Series 2 drives, and aren't supported. Those that start 426 * with 92 14 are series 1 drives and are supported. 427 */ 428 if (be16dec(buf) != 0x9214) { 429 /* If this is 0x1492 it could be a series 2 drive */ 430 g_free(buf); 431 return (ENXIO); 432 } 433 table->ddr.ddr_sig = APM_DDR_SIG; /* XXX */ 434 table->ddr.ddr_blksize = pp->sectorsize; /* XXX */ 435 table->ddr.ddr_blkcount = 436 MIN(pp->mediasize / pp->sectorsize, UINT32_MAX); 437 table->tivo_series1 = 1; 438 g_free(buf); 439 } 440 441 /* Check that there's a Partition Map. */ 442 error = apm_read_ent(cp, 1, &table->self, table->tivo_series1); 443 if (error) 444 return (error); 445 if (table->self.ent_sig != APM_ENT_SIG) 446 return (ENXIO); 447 if (strcmp(table->self.ent_type, APM_ENT_TYPE_SELF)) 448 return (ENXIO); 449 if (table->self.ent_pmblkcnt >= table->ddr.ddr_blkcount) 450 return (ENXIO); 451 return (G_PART_PROBE_PRI_NORM); 452} 453 454static int 455g_part_apm_read(struct g_part_table *basetable, struct g_consumer *cp) 456{ 457 struct apm_ent ent; 458 struct g_part_apm_entry *entry; 459 struct g_part_apm_table *table; 460 int error, index; 461 462 table = (struct g_part_apm_table *)basetable; 463 464 basetable->gpt_first = table->self.ent_size + 1; 465 basetable->gpt_last = table->ddr.ddr_blkcount - 1; 466 basetable->gpt_entries = table->self.ent_size - 1; 467 468 for (index = table->self.ent_pmblkcnt - 1; index > 0; index--) { 469 error = apm_read_ent(cp, index + 1, &ent, table->tivo_series1); 470 if (error) 471 continue; 472 if (!strcmp(ent.ent_type, APM_ENT_TYPE_UNUSED)) 473 continue; 474 entry = (struct g_part_apm_entry *)g_part_new_entry(basetable, 475 index, ent.ent_start, ent.ent_start + ent.ent_size - 1); 476 entry->ent = ent; 477 } 478 479 return (0); 480} 481 482static const char * 483g_part_apm_type(struct g_part_table *basetable, struct g_part_entry *baseentry, 484 char *buf, size_t bufsz) 485{ 486 struct g_part_apm_entry *entry; 487 const char *type; 488 size_t len; 489 490 entry = (struct g_part_apm_entry *)baseentry; 491 type = entry->ent.ent_type; 492 if (!strcmp(type, APM_ENT_TYPE_APPLE_BOOT)) 493 return (g_part_alias_name(G_PART_ALIAS_APPLE_BOOT)); 494 if (!strcmp(type, APM_ENT_TYPE_APPLE_HFS)) 495 return (g_part_alias_name(G_PART_ALIAS_APPLE_HFS)); 496 if (!strcmp(type, APM_ENT_TYPE_APPLE_UFS)) 497 return (g_part_alias_name(G_PART_ALIAS_APPLE_UFS)); 498 if (!strcmp(type, APM_ENT_TYPE_FREEBSD)) 499 return (g_part_alias_name(G_PART_ALIAS_FREEBSD)); 500 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_NANDFS)) 501 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_NANDFS)); 502 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_SWAP)) 503 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP)); 504 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_UFS)) 505 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS)); 506 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_VINUM)) 507 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM)); 508 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_ZFS)) 509 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_ZFS)); 510 buf[0] = '!'; 511 len = MIN(sizeof(entry->ent.ent_type), bufsz - 2); 512 bcopy(type, buf + 1, len); 513 buf[len + 1] = '\0'; 514 return (buf); 515} 516 517static int 518g_part_apm_write(struct g_part_table *basetable, struct g_consumer *cp) 519{ 520 struct g_provider *pp; 521 struct g_part_entry *baseentry; 522 struct g_part_apm_entry *entry; 523 struct g_part_apm_table *table; 524 char *buf, *ptr; 525 uint32_t index; 526 int error; 527 size_t tblsz; 528 529 pp = cp->provider; 530 table = (struct g_part_apm_table *)basetable; 531 /* 532 * Tivo Series 1 disk partitions are currently read-only. 533 */ 534 if (table->tivo_series1) 535 return (EOPNOTSUPP); 536 537 /* Write the DDR only when we're newly created. */ 538 if (basetable->gpt_created) { 539 buf = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO); 540 be16enc(buf, table->ddr.ddr_sig); 541 be16enc(buf + 2, table->ddr.ddr_blksize); 542 be32enc(buf + 4, table->ddr.ddr_blkcount); 543 error = g_write_data(cp, 0, buf, pp->sectorsize); 544 g_free(buf); 545 if (error) 546 return (error); 547 } 548 549 /* Allocate the buffer for all entries */ 550 tblsz = table->self.ent_pmblkcnt; 551 buf = g_malloc(tblsz * pp->sectorsize, M_WAITOK | M_ZERO); 552 553 /* Fill the self entry */ 554 be16enc(buf, APM_ENT_SIG); 555 be32enc(buf + 4, table->self.ent_pmblkcnt); 556 be32enc(buf + 8, table->self.ent_start); 557 be32enc(buf + 12, table->self.ent_size); 558 bcopy(table->self.ent_name, buf + 16, sizeof(table->self.ent_name)); 559 bcopy(table->self.ent_type, buf + 48, sizeof(table->self.ent_type)); 560 561 baseentry = LIST_FIRST(&basetable->gpt_entry); 562 for (index = 1; index < tblsz; index++) { 563 entry = (baseentry != NULL && index == baseentry->gpe_index) 564 ? (struct g_part_apm_entry *)baseentry : NULL; 565 ptr = buf + index * pp->sectorsize; 566 be16enc(ptr, APM_ENT_SIG); 567 be32enc(ptr + 4, table->self.ent_pmblkcnt); 568 if (entry != NULL && !baseentry->gpe_deleted) { 569 be32enc(ptr + 8, entry->ent.ent_start); 570 be32enc(ptr + 12, entry->ent.ent_size); 571 bcopy(entry->ent.ent_name, ptr + 16, 572 sizeof(entry->ent.ent_name)); 573 bcopy(entry->ent.ent_type, ptr + 48, 574 sizeof(entry->ent.ent_type)); 575 } else { 576 strcpy(ptr + 48, APM_ENT_TYPE_UNUSED); 577 } 578 if (entry != NULL) 579 baseentry = LIST_NEXT(baseentry, gpe_entry); 580 } 581 582 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) { 583 error = g_write_data(cp, (1 + index) * pp->sectorsize, 584 buf + index * pp->sectorsize, 585 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS: 586 (tblsz - index) * pp->sectorsize); 587 if (error) { 588 g_free(buf); 589 return (error); 590 } 591 } 592 g_free(buf); 593 return (0); 594} 595