g_part_apm.c revision 332640
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/11/sys/geom/part/g_part_apm.c 332640 2018-04-17 02:18:04Z kevans $"); 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); 108MODULE_VERSION(geom_part_apm, 0); 109 110static void 111swab(char *buf, size_t bufsz) 112{ 113 int i; 114 char ch; 115 116 for (i = 0; i < bufsz; i += 2) { 117 ch = buf[i]; 118 buf[i] = buf[i + 1]; 119 buf[i + 1] = ch; 120 } 121} 122 123static int 124apm_parse_type(const char *type, char *buf, size_t bufsz) 125{ 126 const char *alias; 127 128 if (type[0] == '!') { 129 type++; 130 if (strlen(type) > bufsz) 131 return (EINVAL); 132 if (!strcmp(type, APM_ENT_TYPE_SELF) || 133 !strcmp(type, APM_ENT_TYPE_UNUSED)) 134 return (EINVAL); 135 strncpy(buf, type, bufsz); 136 return (0); 137 } 138 alias = g_part_alias_name(G_PART_ALIAS_APPLE_BOOT); 139 if (!strcasecmp(type, alias)) { 140 strcpy(buf, APM_ENT_TYPE_APPLE_BOOT); 141 return (0); 142 } 143 alias = g_part_alias_name(G_PART_ALIAS_APPLE_HFS); 144 if (!strcasecmp(type, alias)) { 145 strcpy(buf, APM_ENT_TYPE_APPLE_HFS); 146 return (0); 147 } 148 alias = g_part_alias_name(G_PART_ALIAS_APPLE_UFS); 149 if (!strcasecmp(type, alias)) { 150 strcpy(buf, APM_ENT_TYPE_APPLE_UFS); 151 return (0); 152 } 153 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD); 154 if (!strcasecmp(type, alias)) { 155 strcpy(buf, APM_ENT_TYPE_FREEBSD); 156 return (0); 157 } 158 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_NANDFS); 159 if (!strcasecmp(type, alias)) { 160 strcpy(buf, APM_ENT_TYPE_FREEBSD_NANDFS); 161 return (0); 162 } 163 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP); 164 if (!strcasecmp(type, alias)) { 165 strcpy(buf, APM_ENT_TYPE_FREEBSD_SWAP); 166 return (0); 167 } 168 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS); 169 if (!strcasecmp(type, alias)) { 170 strcpy(buf, APM_ENT_TYPE_FREEBSD_UFS); 171 return (0); 172 } 173 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM); 174 if (!strcasecmp(type, alias)) { 175 strcpy(buf, APM_ENT_TYPE_FREEBSD_VINUM); 176 return (0); 177 } 178 alias = g_part_alias_name(G_PART_ALIAS_FREEBSD_ZFS); 179 if (!strcasecmp(type, alias)) { 180 strcpy(buf, APM_ENT_TYPE_FREEBSD_ZFS); 181 return (0); 182 } 183 return (EINVAL); 184} 185 186static int 187apm_read_ent(struct g_consumer *cp, uint32_t blk, struct apm_ent *ent, 188 int tivo_series1) 189{ 190 struct g_provider *pp; 191 char *buf; 192 int error; 193 194 pp = cp->provider; 195 buf = g_read_data(cp, pp->sectorsize * blk, pp->sectorsize, &error); 196 if (buf == NULL) 197 return (error); 198 if (tivo_series1) 199 swab(buf, pp->sectorsize); 200 ent->ent_sig = be16dec(buf); 201 ent->ent_pmblkcnt = be32dec(buf + 4); 202 ent->ent_start = be32dec(buf + 8); 203 ent->ent_size = be32dec(buf + 12); 204 bcopy(buf + 16, ent->ent_name, sizeof(ent->ent_name)); 205 bcopy(buf + 48, ent->ent_type, sizeof(ent->ent_type)); 206 g_free(buf); 207 return (0); 208} 209 210static int 211g_part_apm_add(struct g_part_table *basetable, struct g_part_entry *baseentry, 212 struct g_part_parms *gpp) 213{ 214 struct g_part_apm_entry *entry; 215 struct g_part_apm_table *table; 216 int error; 217 218 entry = (struct g_part_apm_entry *)baseentry; 219 table = (struct g_part_apm_table *)basetable; 220 entry->ent.ent_sig = APM_ENT_SIG; 221 entry->ent.ent_pmblkcnt = table->self.ent_pmblkcnt; 222 entry->ent.ent_start = gpp->gpp_start; 223 entry->ent.ent_size = gpp->gpp_size; 224 if (baseentry->gpe_deleted) { 225 bzero(entry->ent.ent_type, sizeof(entry->ent.ent_type)); 226 bzero(entry->ent.ent_name, sizeof(entry->ent.ent_name)); 227 } 228 error = apm_parse_type(gpp->gpp_type, entry->ent.ent_type, 229 sizeof(entry->ent.ent_type)); 230 if (error) 231 return (error); 232 if (gpp->gpp_parms & G_PART_PARM_LABEL) { 233 if (strlen(gpp->gpp_label) > sizeof(entry->ent.ent_name)) 234 return (EINVAL); 235 strncpy(entry->ent.ent_name, gpp->gpp_label, 236 sizeof(entry->ent.ent_name)); 237 } 238 if (baseentry->gpe_index >= table->self.ent_pmblkcnt) 239 table->self.ent_pmblkcnt = baseentry->gpe_index + 1; 240 KASSERT(table->self.ent_size >= table->self.ent_pmblkcnt, 241 ("%s", __func__)); 242 KASSERT(table->self.ent_size > baseentry->gpe_index, 243 ("%s", __func__)); 244 return (0); 245} 246 247static int 248g_part_apm_create(struct g_part_table *basetable, struct g_part_parms *gpp) 249{ 250 struct g_provider *pp; 251 struct g_part_apm_table *table; 252 uint32_t last; 253 254 /* We don't nest, which means that our depth should be 0. */ 255 if (basetable->gpt_depth != 0) 256 return (ENXIO); 257 258 table = (struct g_part_apm_table *)basetable; 259 pp = gpp->gpp_provider; 260 if (pp->sectorsize != 512 || 261 pp->mediasize < (2 + 2 * basetable->gpt_entries) * pp->sectorsize) 262 return (ENOSPC); 263 264 /* APM uses 32-bit LBAs. */ 265 last = MIN(pp->mediasize / pp->sectorsize, UINT32_MAX) - 1; 266 267 basetable->gpt_first = 2 + basetable->gpt_entries; 268 basetable->gpt_last = last; 269 270 table->ddr.ddr_sig = APM_DDR_SIG; 271 table->ddr.ddr_blksize = pp->sectorsize; 272 table->ddr.ddr_blkcount = last + 1; 273 274 table->self.ent_sig = APM_ENT_SIG; 275 table->self.ent_pmblkcnt = basetable->gpt_entries + 1; 276 table->self.ent_start = 1; 277 table->self.ent_size = table->self.ent_pmblkcnt; 278 strcpy(table->self.ent_name, "Apple"); 279 strcpy(table->self.ent_type, APM_ENT_TYPE_SELF); 280 return (0); 281} 282 283static int 284g_part_apm_destroy(struct g_part_table *basetable, struct g_part_parms *gpp) 285{ 286 287 /* Wipe the first 2 sectors to clear the partitioning. */ 288 basetable->gpt_smhead |= 3; 289 return (0); 290} 291 292static void 293g_part_apm_dumpconf(struct g_part_table *table, struct g_part_entry *baseentry, 294 struct sbuf *sb, const char *indent) 295{ 296 union { 297 char name[APM_ENT_NAMELEN + 1]; 298 char type[APM_ENT_TYPELEN + 1]; 299 } u; 300 struct g_part_apm_entry *entry; 301 302 entry = (struct g_part_apm_entry *)baseentry; 303 if (indent == NULL) { 304 /* conftxt: libdisk compatibility */ 305 sbuf_printf(sb, " xs APPLE xt %s", entry->ent.ent_type); 306 } else if (entry != NULL) { 307 /* confxml: partition entry information */ 308 strncpy(u.name, entry->ent.ent_name, APM_ENT_NAMELEN); 309 u.name[APM_ENT_NAMELEN] = '\0'; 310 sbuf_printf(sb, "%s<label>", indent); 311 g_conf_printf_escaped(sb, "%s", u.name); 312 sbuf_printf(sb, "</label>\n"); 313 strncpy(u.type, entry->ent.ent_type, APM_ENT_TYPELEN); 314 u.type[APM_ENT_TYPELEN] = '\0'; 315 sbuf_printf(sb, "%s<rawtype>", indent); 316 g_conf_printf_escaped(sb, "%s", u.type); 317 sbuf_printf(sb, "</rawtype>\n"); 318 } else { 319 /* confxml: scheme information */ 320 } 321} 322 323static int 324g_part_apm_dumpto(struct g_part_table *table, struct g_part_entry *baseentry) 325{ 326 struct g_part_apm_entry *entry; 327 328 entry = (struct g_part_apm_entry *)baseentry; 329 return ((!strcmp(entry->ent.ent_type, APM_ENT_TYPE_FREEBSD_SWAP)) 330 ? 1 : 0); 331} 332 333static int 334g_part_apm_modify(struct g_part_table *basetable, 335 struct g_part_entry *baseentry, struct g_part_parms *gpp) 336{ 337 struct g_part_apm_entry *entry; 338 int error; 339 340 entry = (struct g_part_apm_entry *)baseentry; 341 if (gpp->gpp_parms & G_PART_PARM_LABEL) { 342 if (strlen(gpp->gpp_label) > sizeof(entry->ent.ent_name)) 343 return (EINVAL); 344 } 345 if (gpp->gpp_parms & G_PART_PARM_TYPE) { 346 error = apm_parse_type(gpp->gpp_type, entry->ent.ent_type, 347 sizeof(entry->ent.ent_type)); 348 if (error) 349 return (error); 350 } 351 if (gpp->gpp_parms & G_PART_PARM_LABEL) { 352 strncpy(entry->ent.ent_name, gpp->gpp_label, 353 sizeof(entry->ent.ent_name)); 354 } 355 return (0); 356} 357 358static int 359g_part_apm_resize(struct g_part_table *basetable, 360 struct g_part_entry *baseentry, struct g_part_parms *gpp) 361{ 362 struct g_part_apm_entry *entry; 363 struct g_provider *pp; 364 365 if (baseentry == NULL) { 366 pp = LIST_FIRST(&basetable->gpt_gp->consumer)->provider; 367 basetable->gpt_last = MIN(pp->mediasize / pp->sectorsize, 368 UINT32_MAX) - 1; 369 return (0); 370 } 371 372 entry = (struct g_part_apm_entry *)baseentry; 373 baseentry->gpe_end = baseentry->gpe_start + gpp->gpp_size - 1; 374 entry->ent.ent_size = gpp->gpp_size; 375 376 return (0); 377} 378 379static const char * 380g_part_apm_name(struct g_part_table *table, struct g_part_entry *baseentry, 381 char *buf, size_t bufsz) 382{ 383 384 snprintf(buf, bufsz, "s%d", baseentry->gpe_index + 1); 385 return (buf); 386} 387 388static int 389g_part_apm_probe(struct g_part_table *basetable, struct g_consumer *cp) 390{ 391 struct g_provider *pp; 392 struct g_part_apm_table *table; 393 char *buf; 394 int error; 395 396 /* We don't nest, which means that our depth should be 0. */ 397 if (basetable->gpt_depth != 0) 398 return (ENXIO); 399 400 table = (struct g_part_apm_table *)basetable; 401 table->tivo_series1 = 0; 402 pp = cp->provider; 403 404 /* Sanity-check the provider. */ 405 if (pp->mediasize < 4 * pp->sectorsize) 406 return (ENOSPC); 407 408 /* Check that there's a Driver Descriptor Record (DDR). */ 409 buf = g_read_data(cp, 0L, pp->sectorsize, &error); 410 if (buf == NULL) 411 return (error); 412 if (be16dec(buf) == APM_DDR_SIG) { 413 /* Normal Apple DDR */ 414 table->ddr.ddr_sig = be16dec(buf); 415 table->ddr.ddr_blksize = be16dec(buf + 2); 416 table->ddr.ddr_blkcount = be32dec(buf + 4); 417 g_free(buf); 418 if (table->ddr.ddr_blksize != pp->sectorsize) 419 return (ENXIO); 420 if (table->ddr.ddr_blkcount > pp->mediasize / pp->sectorsize) 421 return (ENXIO); 422 } else { 423 /* 424 * Check for Tivo drives, which have no DDR and a different 425 * signature. Those whose first two bytes are 14 92 are 426 * Series 2 drives, and aren't supported. Those that start 427 * with 92 14 are series 1 drives and are supported. 428 */ 429 if (be16dec(buf) != 0x9214) { 430 /* If this is 0x1492 it could be a series 2 drive */ 431 g_free(buf); 432 return (ENXIO); 433 } 434 table->ddr.ddr_sig = APM_DDR_SIG; /* XXX */ 435 table->ddr.ddr_blksize = pp->sectorsize; /* XXX */ 436 table->ddr.ddr_blkcount = 437 MIN(pp->mediasize / pp->sectorsize, UINT32_MAX); 438 table->tivo_series1 = 1; 439 g_free(buf); 440 } 441 442 /* Check that there's a Partition Map. */ 443 error = apm_read_ent(cp, 1, &table->self, table->tivo_series1); 444 if (error) 445 return (error); 446 if (table->self.ent_sig != APM_ENT_SIG) 447 return (ENXIO); 448 if (strcmp(table->self.ent_type, APM_ENT_TYPE_SELF)) 449 return (ENXIO); 450 if (table->self.ent_pmblkcnt >= table->ddr.ddr_blkcount) 451 return (ENXIO); 452 return (G_PART_PROBE_PRI_NORM); 453} 454 455static int 456g_part_apm_read(struct g_part_table *basetable, struct g_consumer *cp) 457{ 458 struct apm_ent ent; 459 struct g_part_apm_entry *entry; 460 struct g_part_apm_table *table; 461 int error, index; 462 463 table = (struct g_part_apm_table *)basetable; 464 465 basetable->gpt_first = table->self.ent_size + 1; 466 basetable->gpt_last = table->ddr.ddr_blkcount - 1; 467 basetable->gpt_entries = table->self.ent_size - 1; 468 469 for (index = table->self.ent_pmblkcnt - 1; index > 0; index--) { 470 error = apm_read_ent(cp, index + 1, &ent, table->tivo_series1); 471 if (error) 472 continue; 473 if (!strcmp(ent.ent_type, APM_ENT_TYPE_UNUSED)) 474 continue; 475 entry = (struct g_part_apm_entry *)g_part_new_entry(basetable, 476 index, ent.ent_start, ent.ent_start + ent.ent_size - 1); 477 entry->ent = ent; 478 } 479 480 return (0); 481} 482 483static const char * 484g_part_apm_type(struct g_part_table *basetable, struct g_part_entry *baseentry, 485 char *buf, size_t bufsz) 486{ 487 struct g_part_apm_entry *entry; 488 const char *type; 489 size_t len; 490 491 entry = (struct g_part_apm_entry *)baseentry; 492 type = entry->ent.ent_type; 493 if (!strcmp(type, APM_ENT_TYPE_APPLE_BOOT)) 494 return (g_part_alias_name(G_PART_ALIAS_APPLE_BOOT)); 495 if (!strcmp(type, APM_ENT_TYPE_APPLE_HFS)) 496 return (g_part_alias_name(G_PART_ALIAS_APPLE_HFS)); 497 if (!strcmp(type, APM_ENT_TYPE_APPLE_UFS)) 498 return (g_part_alias_name(G_PART_ALIAS_APPLE_UFS)); 499 if (!strcmp(type, APM_ENT_TYPE_FREEBSD)) 500 return (g_part_alias_name(G_PART_ALIAS_FREEBSD)); 501 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_NANDFS)) 502 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_NANDFS)); 503 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_SWAP)) 504 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_SWAP)); 505 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_UFS)) 506 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_UFS)); 507 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_VINUM)) 508 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_VINUM)); 509 if (!strcmp(type, APM_ENT_TYPE_FREEBSD_ZFS)) 510 return (g_part_alias_name(G_PART_ALIAS_FREEBSD_ZFS)); 511 buf[0] = '!'; 512 len = MIN(sizeof(entry->ent.ent_type), bufsz - 2); 513 bcopy(type, buf + 1, len); 514 buf[len + 1] = '\0'; 515 return (buf); 516} 517 518static int 519g_part_apm_write(struct g_part_table *basetable, struct g_consumer *cp) 520{ 521 struct g_provider *pp; 522 struct g_part_entry *baseentry; 523 struct g_part_apm_entry *entry; 524 struct g_part_apm_table *table; 525 char *buf, *ptr; 526 uint32_t index; 527 int error; 528 size_t tblsz; 529 530 pp = cp->provider; 531 table = (struct g_part_apm_table *)basetable; 532 /* 533 * Tivo Series 1 disk partitions are currently read-only. 534 */ 535 if (table->tivo_series1) 536 return (EOPNOTSUPP); 537 538 /* Write the DDR only when we're newly created. */ 539 if (basetable->gpt_created) { 540 buf = g_malloc(pp->sectorsize, M_WAITOK | M_ZERO); 541 be16enc(buf, table->ddr.ddr_sig); 542 be16enc(buf + 2, table->ddr.ddr_blksize); 543 be32enc(buf + 4, table->ddr.ddr_blkcount); 544 error = g_write_data(cp, 0, buf, pp->sectorsize); 545 g_free(buf); 546 if (error) 547 return (error); 548 } 549 550 /* Allocate the buffer for all entries */ 551 tblsz = table->self.ent_pmblkcnt; 552 buf = g_malloc(tblsz * pp->sectorsize, M_WAITOK | M_ZERO); 553 554 /* Fill the self entry */ 555 be16enc(buf, APM_ENT_SIG); 556 be32enc(buf + 4, table->self.ent_pmblkcnt); 557 be32enc(buf + 8, table->self.ent_start); 558 be32enc(buf + 12, table->self.ent_size); 559 bcopy(table->self.ent_name, buf + 16, sizeof(table->self.ent_name)); 560 bcopy(table->self.ent_type, buf + 48, sizeof(table->self.ent_type)); 561 562 baseentry = LIST_FIRST(&basetable->gpt_entry); 563 for (index = 1; index < tblsz; index++) { 564 entry = (baseentry != NULL && index == baseentry->gpe_index) 565 ? (struct g_part_apm_entry *)baseentry : NULL; 566 ptr = buf + index * pp->sectorsize; 567 be16enc(ptr, APM_ENT_SIG); 568 be32enc(ptr + 4, table->self.ent_pmblkcnt); 569 if (entry != NULL && !baseentry->gpe_deleted) { 570 be32enc(ptr + 8, entry->ent.ent_start); 571 be32enc(ptr + 12, entry->ent.ent_size); 572 bcopy(entry->ent.ent_name, ptr + 16, 573 sizeof(entry->ent.ent_name)); 574 bcopy(entry->ent.ent_type, ptr + 48, 575 sizeof(entry->ent.ent_type)); 576 } else { 577 strcpy(ptr + 48, APM_ENT_TYPE_UNUSED); 578 } 579 if (entry != NULL) 580 baseentry = LIST_NEXT(baseentry, gpe_entry); 581 } 582 583 for (index = 0; index < tblsz; index += MAXPHYS / pp->sectorsize) { 584 error = g_write_data(cp, (1 + index) * pp->sectorsize, 585 buf + index * pp->sectorsize, 586 (tblsz - index > MAXPHYS / pp->sectorsize) ? MAXPHYS: 587 (tblsz - index) * pp->sectorsize); 588 if (error) { 589 g_free(buf); 590 return (error); 591 } 592 } 593 g_free(buf); 594 return (0); 595} 596