efiblock.c revision 1.2.2.2
1 1.2.2.2 pgoyette /* $NetBSD: efiblock.c,v 1.2.2.2 2018/09/06 06:56:47 pgoyette Exp $ */ 2 1.2.2.2 pgoyette 3 1.2.2.2 pgoyette /*- 4 1.2.2.2 pgoyette * Copyright (c) 2016 Kimihiro Nonaka <nonaka (at) netbsd.org> 5 1.2.2.2 pgoyette * Copyright (c) 2018 Jared McNeill <jmcneill (at) invisible.ca> 6 1.2.2.2 pgoyette * All rights reserved. 7 1.2.2.2 pgoyette * 8 1.2.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 9 1.2.2.2 pgoyette * modification, are permitted provided that the following conditions 10 1.2.2.2 pgoyette * are met: 11 1.2.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 12 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 13 1.2.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 14 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 15 1.2.2.2 pgoyette * documentation and/or other materials provided with the distribution. 16 1.2.2.2 pgoyette * 17 1.2.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 1.2.2.2 pgoyette * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 1.2.2.2 pgoyette * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 1.2.2.2 pgoyette * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 1.2.2.2 pgoyette * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 1.2.2.2 pgoyette * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 1.2.2.2 pgoyette * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 1.2.2.2 pgoyette * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 1.2.2.2 pgoyette * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 1.2.2.2 pgoyette * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 1.2.2.2 pgoyette * SUCH DAMAGE. 28 1.2.2.2 pgoyette */ 29 1.2.2.2 pgoyette 30 1.2.2.2 pgoyette #define FSTYPENAMES 31 1.2.2.2 pgoyette 32 1.2.2.2 pgoyette #include <sys/param.h> 33 1.2.2.2 pgoyette #include <sys/md5.h> 34 1.2.2.2 pgoyette 35 1.2.2.2 pgoyette #include "efiboot.h" 36 1.2.2.2 pgoyette #include "efiblock.h" 37 1.2.2.2 pgoyette 38 1.2.2.2 pgoyette static EFI_HANDLE *efi_block; 39 1.2.2.2 pgoyette static UINTN efi_nblock; 40 1.2.2.2 pgoyette static struct efi_block_part *efi_block_booted = NULL; 41 1.2.2.2 pgoyette 42 1.2.2.2 pgoyette static TAILQ_HEAD(, efi_block_dev) efi_block_devs = TAILQ_HEAD_INITIALIZER(efi_block_devs); 43 1.2.2.2 pgoyette 44 1.2.2.2 pgoyette static int 45 1.2.2.2 pgoyette efi_block_parse(const char *fname, struct efi_block_part **pbpart, char **pfile) 46 1.2.2.2 pgoyette { 47 1.2.2.2 pgoyette struct efi_block_dev *bdev; 48 1.2.2.2 pgoyette struct efi_block_part *bpart; 49 1.2.2.2 pgoyette char pathbuf[PATH_MAX], *default_device, *ep = NULL; 50 1.2.2.2 pgoyette const char *full_path; 51 1.2.2.2 pgoyette intmax_t dev; 52 1.2.2.2 pgoyette int part; 53 1.2.2.2 pgoyette 54 1.2.2.2 pgoyette default_device = get_default_device(); 55 1.2.2.2 pgoyette if (strchr(fname, ':') == NULL) { 56 1.2.2.2 pgoyette if (strlen(default_device) > 0) { 57 1.2.2.2 pgoyette snprintf(pathbuf, sizeof(pathbuf), "%s:%s", default_device, fname); 58 1.2.2.2 pgoyette full_path = pathbuf; 59 1.2.2.2 pgoyette *pfile = __UNCONST(fname); 60 1.2.2.2 pgoyette } else { 61 1.2.2.2 pgoyette return EINVAL; 62 1.2.2.2 pgoyette } 63 1.2.2.2 pgoyette } else { 64 1.2.2.2 pgoyette full_path = fname; 65 1.2.2.2 pgoyette *pfile = strchr(fname, ':') + 1; 66 1.2.2.2 pgoyette } 67 1.2.2.2 pgoyette 68 1.2.2.2 pgoyette if (strncasecmp(full_path, "hd", 2) != 0) 69 1.2.2.2 pgoyette return EINVAL; 70 1.2.2.2 pgoyette dev = strtoimax(full_path + 2, &ep, 10); 71 1.2.2.2 pgoyette if (dev < 0 || dev >= efi_nblock) 72 1.2.2.2 pgoyette return ENXIO; 73 1.2.2.2 pgoyette if (ep[0] < 'a' || ep[0] >= 'a' + MAXPARTITIONS || ep[1] != ':') 74 1.2.2.2 pgoyette return EINVAL; 75 1.2.2.2 pgoyette part = ep[0] - 'a'; 76 1.2.2.2 pgoyette TAILQ_FOREACH(bdev, &efi_block_devs, entries) { 77 1.2.2.2 pgoyette if (bdev->index == dev) { 78 1.2.2.2 pgoyette TAILQ_FOREACH(bpart, &bdev->partitions, entries) { 79 1.2.2.2 pgoyette if (bpart->index == part) { 80 1.2.2.2 pgoyette *pbpart = bpart; 81 1.2.2.2 pgoyette return 0; 82 1.2.2.2 pgoyette } 83 1.2.2.2 pgoyette } 84 1.2.2.2 pgoyette } 85 1.2.2.2 pgoyette } 86 1.2.2.2 pgoyette 87 1.2.2.2 pgoyette return ENOENT; 88 1.2.2.2 pgoyette } 89 1.2.2.2 pgoyette 90 1.2.2.2 pgoyette static void 91 1.2.2.2 pgoyette efi_block_generate_hash_mbr(struct efi_block_part *bpart, struct mbr_sector *mbr) 92 1.2.2.2 pgoyette { 93 1.2.2.2 pgoyette MD5_CTX md5ctx; 94 1.2.2.2 pgoyette 95 1.2.2.2 pgoyette MD5Init(&md5ctx); 96 1.2.2.2 pgoyette MD5Update(&md5ctx, (void *)mbr, sizeof(*mbr)); 97 1.2.2.2 pgoyette MD5Final(bpart->hash, &md5ctx); 98 1.2.2.2 pgoyette } 99 1.2.2.2 pgoyette 100 1.2.2.2 pgoyette static int 101 1.2.2.2 pgoyette efi_block_find_partitions_disklabel(struct efi_block_dev *bdev, struct mbr_sector *mbr, uint32_t start, uint32_t size) 102 1.2.2.2 pgoyette { 103 1.2.2.2 pgoyette struct efi_block_part *bpart; 104 1.2.2.2 pgoyette struct disklabel d; 105 1.2.2.2 pgoyette struct partition *p; 106 1.2.2.2 pgoyette EFI_STATUS status; 107 1.2.2.2 pgoyette EFI_LBA lba; 108 1.2.2.2 pgoyette uint8_t *buf; 109 1.2.2.2 pgoyette UINT32 sz; 110 1.2.2.2 pgoyette int n; 111 1.2.2.2 pgoyette 112 1.2.2.2 pgoyette sz = __MAX(sizeof(d), bdev->bio->Media->BlockSize); 113 1.2.2.2 pgoyette sz = roundup(sz, bdev->bio->Media->BlockSize); 114 1.2.2.2 pgoyette buf = AllocatePool(sz); 115 1.2.2.2 pgoyette if (!buf) 116 1.2.2.2 pgoyette return ENOMEM; 117 1.2.2.2 pgoyette 118 1.2.2.2 pgoyette lba = ((start + LABELSECTOR) * DEV_BSIZE) / bdev->bio->Media->BlockSize; 119 1.2.2.2 pgoyette status = uefi_call_wrapper(bdev->bio->ReadBlocks, 5, bdev->bio, bdev->media_id, lba, sz, buf); 120 1.2.2.2 pgoyette if (EFI_ERROR(status) || getdisklabel(buf, &d) != NULL) { 121 1.2.2.2 pgoyette FreePool(buf); 122 1.2.2.2 pgoyette return EIO; 123 1.2.2.2 pgoyette } 124 1.2.2.2 pgoyette FreePool(buf); 125 1.2.2.2 pgoyette 126 1.2.2.2 pgoyette if (le32toh(d.d_magic) != DISKMAGIC || le32toh(d.d_magic2) != DISKMAGIC) 127 1.2.2.2 pgoyette return EINVAL; 128 1.2.2.2 pgoyette if (le16toh(d.d_npartitions) > MAXPARTITIONS) 129 1.2.2.2 pgoyette return EINVAL; 130 1.2.2.2 pgoyette 131 1.2.2.2 pgoyette for (n = 0; n < le16toh(d.d_npartitions); n++) { 132 1.2.2.2 pgoyette p = &d.d_partitions[n]; 133 1.2.2.2 pgoyette switch (p->p_fstype) { 134 1.2.2.2 pgoyette case FS_BSDFFS: 135 1.2.2.2 pgoyette case FS_MSDOS: 136 1.2.2.2 pgoyette case FS_BSDLFS: 137 1.2.2.2 pgoyette break; 138 1.2.2.2 pgoyette default: 139 1.2.2.2 pgoyette continue; 140 1.2.2.2 pgoyette } 141 1.2.2.2 pgoyette 142 1.2.2.2 pgoyette bpart = alloc(sizeof(*bpart)); 143 1.2.2.2 pgoyette bpart->index = n; 144 1.2.2.2 pgoyette bpart->bdev = bdev; 145 1.2.2.2 pgoyette bpart->type = EFI_BLOCK_PART_DISKLABEL; 146 1.2.2.2 pgoyette bpart->disklabel.secsize = le32toh(d.d_secsize); 147 1.2.2.2 pgoyette bpart->disklabel.part = *p; 148 1.2.2.2 pgoyette efi_block_generate_hash_mbr(bpart, mbr); 149 1.2.2.2 pgoyette TAILQ_INSERT_TAIL(&bdev->partitions, bpart, entries); 150 1.2.2.2 pgoyette } 151 1.2.2.2 pgoyette 152 1.2.2.2 pgoyette return 0; 153 1.2.2.2 pgoyette } 154 1.2.2.2 pgoyette 155 1.2.2.2 pgoyette static int 156 1.2.2.2 pgoyette efi_block_find_partitions_mbr(struct efi_block_dev *bdev) 157 1.2.2.2 pgoyette { 158 1.2.2.2 pgoyette struct mbr_sector mbr; 159 1.2.2.2 pgoyette struct mbr_partition *mbr_part; 160 1.2.2.2 pgoyette EFI_STATUS status; 161 1.2.2.2 pgoyette uint8_t *buf; 162 1.2.2.2 pgoyette UINT32 sz; 163 1.2.2.2 pgoyette int n; 164 1.2.2.2 pgoyette 165 1.2.2.2 pgoyette sz = __MAX(sizeof(mbr), bdev->bio->Media->BlockSize); 166 1.2.2.2 pgoyette sz = roundup(sz, bdev->bio->Media->BlockSize); 167 1.2.2.2 pgoyette buf = AllocatePool(sz); 168 1.2.2.2 pgoyette if (!buf) 169 1.2.2.2 pgoyette return ENOMEM; 170 1.2.2.2 pgoyette 171 1.2.2.2 pgoyette status = uefi_call_wrapper(bdev->bio->ReadBlocks, 5, bdev->bio, bdev->media_id, 0, sz, buf); 172 1.2.2.2 pgoyette if (EFI_ERROR(status)) { 173 1.2.2.2 pgoyette FreePool(buf); 174 1.2.2.2 pgoyette return EIO; 175 1.2.2.2 pgoyette } 176 1.2.2.2 pgoyette memcpy(&mbr, buf, sizeof(mbr)); 177 1.2.2.2 pgoyette FreePool(buf); 178 1.2.2.2 pgoyette 179 1.2.2.2 pgoyette if (le32toh(mbr.mbr_magic) != MBR_MAGIC) 180 1.2.2.2 pgoyette return ENOENT; 181 1.2.2.2 pgoyette 182 1.2.2.2 pgoyette for (n = 0; n < MBR_PART_COUNT; n++) { 183 1.2.2.2 pgoyette mbr_part = &mbr.mbr_parts[n]; 184 1.2.2.2 pgoyette if (le32toh(mbr_part->mbrp_size) == 0) 185 1.2.2.2 pgoyette continue; 186 1.2.2.2 pgoyette if (mbr_part->mbrp_type == MBR_PTYPE_NETBSD) { 187 1.2.2.2 pgoyette efi_block_find_partitions_disklabel(bdev, &mbr, le32toh(mbr_part->mbrp_start), le32toh(mbr_part->mbrp_size)); 188 1.2.2.2 pgoyette break; 189 1.2.2.2 pgoyette } 190 1.2.2.2 pgoyette } 191 1.2.2.2 pgoyette 192 1.2.2.2 pgoyette return 0; 193 1.2.2.2 pgoyette } 194 1.2.2.2 pgoyette 195 1.2.2.2 pgoyette static int 196 1.2.2.2 pgoyette efi_block_find_partitions(struct efi_block_dev *bdev) 197 1.2.2.2 pgoyette { 198 1.2.2.2 pgoyette return efi_block_find_partitions_mbr(bdev); 199 1.2.2.2 pgoyette } 200 1.2.2.2 pgoyette 201 1.2.2.2 pgoyette void 202 1.2.2.2 pgoyette efi_block_probe(void) 203 1.2.2.2 pgoyette { 204 1.2.2.2 pgoyette struct efi_block_dev *bdev; 205 1.2.2.2 pgoyette EFI_BLOCK_IO *bio; 206 1.2.2.2 pgoyette EFI_STATUS status; 207 1.2.2.2 pgoyette uint16_t devindex = 0; 208 1.2.2.2 pgoyette int depth = -1; 209 1.2.2.2 pgoyette int n; 210 1.2.2.2 pgoyette 211 1.2.2.2 pgoyette status = LibLocateHandle(ByProtocol, &BlockIoProtocol, NULL, &efi_nblock, &efi_block); 212 1.2.2.2 pgoyette if (EFI_ERROR(status)) 213 1.2.2.2 pgoyette return; 214 1.2.2.2 pgoyette 215 1.2.2.2 pgoyette if (efi_bootdp) { 216 1.2.2.2 pgoyette depth = efi_device_path_depth(efi_bootdp, MEDIA_DEVICE_PATH); 217 1.2.2.2 pgoyette if (depth == 0) 218 1.2.2.2 pgoyette depth = 1; 219 1.2.2.2 pgoyette } 220 1.2.2.2 pgoyette 221 1.2.2.2 pgoyette for (n = 0; n < efi_nblock; n++) { 222 1.2.2.2 pgoyette status = uefi_call_wrapper(BS->HandleProtocol, 3, efi_block[n], &BlockIoProtocol, (void **)&bio); 223 1.2.2.2 pgoyette if (EFI_ERROR(status) || !bio->Media->MediaPresent) 224 1.2.2.2 pgoyette continue; 225 1.2.2.2 pgoyette 226 1.2.2.2 pgoyette if (bio->Media->LogicalPartition) 227 1.2.2.2 pgoyette continue; 228 1.2.2.2 pgoyette 229 1.2.2.2 pgoyette bdev = alloc(sizeof(*bdev)); 230 1.2.2.2 pgoyette bdev->index = devindex++; 231 1.2.2.2 pgoyette bdev->bio = bio; 232 1.2.2.2 pgoyette bdev->media_id = bio->Media->MediaId; 233 1.2.2.2 pgoyette bdev->path = DevicePathFromHandle(efi_block[n]); 234 1.2.2.2 pgoyette TAILQ_INIT(&bdev->partitions); 235 1.2.2.2 pgoyette TAILQ_INSERT_TAIL(&efi_block_devs, bdev, entries); 236 1.2.2.2 pgoyette 237 1.2.2.2 pgoyette if (depth > 0 && efi_device_path_ncmp(efi_bootdp, DevicePathFromHandle(efi_block[n]), depth) == 0) { 238 1.2.2.2 pgoyette char devname[9]; 239 1.2.2.2 pgoyette snprintf(devname, sizeof(devname), "hd%ua", bdev->index); 240 1.2.2.2 pgoyette set_default_device(devname); 241 1.2.2.2 pgoyette } 242 1.2.2.2 pgoyette 243 1.2.2.2 pgoyette efi_block_find_partitions(bdev); 244 1.2.2.2 pgoyette } 245 1.2.2.2 pgoyette } 246 1.2.2.2 pgoyette 247 1.2.2.2 pgoyette void 248 1.2.2.2 pgoyette efi_block_show(void) 249 1.2.2.2 pgoyette { 250 1.2.2.2 pgoyette struct efi_block_dev *bdev; 251 1.2.2.2 pgoyette struct efi_block_part *bpart; 252 1.2.2.2 pgoyette uint64_t size; 253 1.2.2.2 pgoyette CHAR16 *path; 254 1.2.2.2 pgoyette 255 1.2.2.2 pgoyette TAILQ_FOREACH(bdev, &efi_block_devs, entries) { 256 1.2.2.2 pgoyette printf("hd%u (", bdev->index); 257 1.2.2.2 pgoyette 258 1.2.2.2 pgoyette /* Size in MB */ 259 1.2.2.2 pgoyette size = ((bdev->bio->Media->LastBlock + 1) * bdev->bio->Media->BlockSize) / (1024 * 1024); 260 1.2.2.2 pgoyette if (size >= 10000) 261 1.2.2.2 pgoyette printf("%"PRIu64" GB", size / 1024); 262 1.2.2.2 pgoyette else 263 1.2.2.2 pgoyette printf("%"PRIu64" MB", size); 264 1.2.2.2 pgoyette printf("): "); 265 1.2.2.2 pgoyette 266 1.2.2.2 pgoyette path = DevicePathToStr(bdev->path); 267 1.2.2.2 pgoyette Print(L"%s", path); 268 1.2.2.2 pgoyette FreePool(path); 269 1.2.2.2 pgoyette 270 1.2.2.2 pgoyette printf("\n"); 271 1.2.2.2 pgoyette 272 1.2.2.2 pgoyette TAILQ_FOREACH(bpart, &bdev->partitions, entries) { 273 1.2.2.2 pgoyette switch (bpart->type) { 274 1.2.2.2 pgoyette case EFI_BLOCK_PART_DISKLABEL: 275 1.2.2.2 pgoyette printf(" hd%u%c (", bdev->index, bpart->index + 'a'); 276 1.2.2.2 pgoyette 277 1.2.2.2 pgoyette /* Size in MB */ 278 1.2.2.2 pgoyette size = ((uint64_t)bpart->disklabel.secsize * bpart->disklabel.part.p_size) / (1024 * 1024); 279 1.2.2.2 pgoyette if (size >= 10000) 280 1.2.2.2 pgoyette printf("%"PRIu64" GB", size / 1024); 281 1.2.2.2 pgoyette else 282 1.2.2.2 pgoyette printf("%"PRIu64" MB", size); 283 1.2.2.2 pgoyette printf("): "); 284 1.2.2.2 pgoyette 285 1.2.2.2 pgoyette printf("%s\n", fstypenames[bpart->disklabel.part.p_fstype]); 286 1.2.2.2 pgoyette break; 287 1.2.2.2 pgoyette default: 288 1.2.2.2 pgoyette break; 289 1.2.2.2 pgoyette } 290 1.2.2.2 pgoyette } 291 1.2.2.2 pgoyette } 292 1.2.2.2 pgoyette } 293 1.2.2.2 pgoyette 294 1.2.2.2 pgoyette struct efi_block_part * 295 1.2.2.2 pgoyette efi_block_boot_part(void) 296 1.2.2.2 pgoyette { 297 1.2.2.2 pgoyette return efi_block_booted; 298 1.2.2.2 pgoyette } 299 1.2.2.2 pgoyette 300 1.2.2.2 pgoyette int 301 1.2.2.2 pgoyette efi_block_open(struct open_file *f, ...) 302 1.2.2.2 pgoyette { 303 1.2.2.2 pgoyette struct efi_block_part *bpart; 304 1.2.2.2 pgoyette const char *fname; 305 1.2.2.2 pgoyette char **file; 306 1.2.2.2 pgoyette char *path; 307 1.2.2.2 pgoyette va_list ap; 308 1.2.2.2 pgoyette int rv, n; 309 1.2.2.2 pgoyette 310 1.2.2.2 pgoyette va_start(ap, f); 311 1.2.2.2 pgoyette fname = va_arg(ap, const char *); 312 1.2.2.2 pgoyette file = va_arg(ap, char **); 313 1.2.2.2 pgoyette va_end(ap); 314 1.2.2.2 pgoyette 315 1.2.2.2 pgoyette rv = efi_block_parse(fname, &bpart, &path); 316 1.2.2.2 pgoyette if (rv != 0) 317 1.2.2.2 pgoyette return rv; 318 1.2.2.2 pgoyette 319 1.2.2.2 pgoyette for (n = 0; n < ndevs; n++) 320 1.2.2.2 pgoyette if (strcmp(DEV_NAME(&devsw[n]), "efiblock") == 0) { 321 1.2.2.2 pgoyette f->f_dev = &devsw[n]; 322 1.2.2.2 pgoyette break; 323 1.2.2.2 pgoyette } 324 1.2.2.2 pgoyette if (n == ndevs) 325 1.2.2.2 pgoyette return ENXIO; 326 1.2.2.2 pgoyette 327 1.2.2.2 pgoyette f->f_devdata = bpart; 328 1.2.2.2 pgoyette 329 1.2.2.2 pgoyette *file = path; 330 1.2.2.2 pgoyette 331 1.2.2.2 pgoyette efi_block_booted = bpart; 332 1.2.2.2 pgoyette 333 1.2.2.2 pgoyette return 0; 334 1.2.2.2 pgoyette } 335 1.2.2.2 pgoyette 336 1.2.2.2 pgoyette int 337 1.2.2.2 pgoyette efi_block_close(struct open_file *f) 338 1.2.2.2 pgoyette { 339 1.2.2.2 pgoyette return 0; 340 1.2.2.2 pgoyette } 341 1.2.2.2 pgoyette 342 1.2.2.2 pgoyette int 343 1.2.2.2 pgoyette efi_block_strategy(void *devdata, int rw, daddr_t dblk, size_t size, void *buf, size_t *rsize) 344 1.2.2.2 pgoyette { 345 1.2.2.2 pgoyette struct efi_block_part *bpart = devdata; 346 1.2.2.2 pgoyette EFI_STATUS status; 347 1.2.2.2 pgoyette 348 1.2.2.2 pgoyette if (rw != F_READ) 349 1.2.2.2 pgoyette return EROFS; 350 1.2.2.2 pgoyette 351 1.2.2.2 pgoyette switch (bpart->type) { 352 1.2.2.2 pgoyette case EFI_BLOCK_PART_DISKLABEL: 353 1.2.2.2 pgoyette if (bpart->bdev->bio->Media->BlockSize != bpart->disklabel.secsize) { 354 1.2.2.2 pgoyette printf("%s: unsupported block size %d (expected %d)\n", __func__, 355 1.2.2.2 pgoyette bpart->bdev->bio->Media->BlockSize, bpart->disklabel.secsize); 356 1.2.2.2 pgoyette return EIO; 357 1.2.2.2 pgoyette } 358 1.2.2.2 pgoyette dblk += bpart->disklabel.part.p_offset; 359 1.2.2.2 pgoyette break; 360 1.2.2.2 pgoyette default: 361 1.2.2.2 pgoyette return EINVAL; 362 1.2.2.2 pgoyette } 363 1.2.2.2 pgoyette 364 1.2.2.2 pgoyette status = uefi_call_wrapper(bpart->bdev->bio->ReadBlocks, 5, bpart->bdev->bio, bpart->bdev->media_id, dblk, size, buf); 365 1.2.2.2 pgoyette if (EFI_ERROR(status)) 366 1.2.2.2 pgoyette return EIO; 367 1.2.2.2 pgoyette 368 1.2.2.2 pgoyette *rsize = size; 369 1.2.2.2 pgoyette 370 1.2.2.2 pgoyette return 0; 371 1.2.2.2 pgoyette } 372
Indexes created Fri Oct 31 11:10:07 GMT 2025