arch/all-pc/boot/grub2-aros/util/setup.c

   1 /* grub-setup.c - make GRUB usable */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21 #include <grub/types.h>
  22 #include <grub/emu/misc.h>
  23 #include <grub/util/misc.h>
  24 #include <grub/device.h>
  25 #include <grub/disk.h>
  26 #include <grub/file.h>
  27 #include <grub/fs.h>
  28 #include <grub/partition.h>
  29 #include <grub/env.h>
  30 #include <grub/emu/hostdisk.h>
  31 #include <grub/term.h>
  32 #include <grub/i18n.h>
  33
  34 #ifdef GRUB_SETUP_SPARC64
  35 #include <grub/util/ofpath.h>
  36 #include <grub/sparc64/ieee1275/boot.h>
  37 #include <grub/sparc64/ieee1275/kernel.h>
  38 #else
  39 #include <grub/i386/pc/boot.h>
  40 #include <grub/i386/pc/kernel.h>
  41 #endif
  42
  43 #include <stdio.h>
  44 #include <unistd.h>
  45 #include <string.h>
  46 #include <stdlib.h>
  47 #include <sys/types.h>
  48 #include <sys/stat.h>
  49 #include <dirent.h>
  50 #include <assert.h>
  51 #include <grub/emu/getroot.h>
  52 #include "progname.h"
  53 #include <grub/reed_solomon.h>
  54 #include <grub/msdos_partition.h>
  55 #include <grub/crypto.h>
  56 #include <grub/util/install.h>
  57 #include <grub/emu/hostfile.h>
  58
  59 #include <errno.h>
  60
  61 /* On SPARC this program fills in various fields inside of the 'boot' and 'core'
  62  * image files.
  63  *
  64  * The 'boot' image needs to know the OBP path name of the root
  65  * device.  It also needs to know the initial block number of
  66  * 'core' (which is 'diskboot' concatenated with 'kernel' and
  67  * all the modules, this is created by grub-mkimage).  This resulting
  68  * 'boot' image is 512 bytes in size and is placed in the second block
  69  * of a partition.
  70  *
  71  * The initial 'diskboot' block acts as a loader for the actual GRUB
  72  * kernel.  It contains the loading code and then a block list.
  73  *
  74  * The block list of 'core' starts at the end of the 'diskboot' image
  75  * and works it's way backwards towards the end of the code of 'diskboot'.
  76  *
  77  * We patch up the images with the necessary values and write out the
  78  * result.
  79  */
  80
  81 #ifdef GRUB_SETUP_SPARC64
  82 #define grub_target_to_host16(x)        grub_be_to_cpu16(x)
  83 #define grub_target_to_host32(x)        grub_be_to_cpu32(x)
  84 #define grub_target_to_host64(x)        grub_be_to_cpu64(x)
  85 #define grub_host_to_target16(x)        grub_cpu_to_be16(x)
  86 #define grub_host_to_target32(x)        grub_cpu_to_be32(x)
  87 #define grub_host_to_target64(x)        grub_cpu_to_be64(x)
  88 #elif defined (GRUB_SETUP_BIOS)
  89 #define grub_target_to_host16(x)        grub_le_to_cpu16(x)
  90 #define grub_target_to_host32(x)        grub_le_to_cpu32(x)
  91 #define grub_target_to_host64(x)        grub_le_to_cpu64(x)
  92 #define grub_host_to_target16(x)        grub_cpu_to_le16(x)
  93 #define grub_host_to_target32(x)        grub_cpu_to_le32(x)
  94 #define grub_host_to_target64(x)        grub_cpu_to_le64(x)
  95 #else
  96 #error Complete this
  97 #endif
  98
  99 static void
 100 write_rootdev (grub_device_t root_dev,
 101                char *boot_img, grub_uint64_t first_sector)
 102 {
 103 #ifdef GRUB_SETUP_BIOS
 104   {
 105     grub_uint8_t *boot_drive;
 106     void *kernel_sector;
 107     boot_drive = (grub_uint8_t *) (boot_img + GRUB_BOOT_MACHINE_BOOT_DRIVE);
 108     kernel_sector = (boot_img + GRUB_BOOT_MACHINE_KERNEL_SECTOR);
 109
 110     /* FIXME: can this be skipped?  */
 111     *boot_drive = 0xFF;
 112
 113     grub_set_unaligned64 (kernel_sector, grub_cpu_to_le64 (first_sector));
 114   }
 115 #endif
 116 #ifdef GRUB_SETUP_SPARC64
 117   {
 118     void *kernel_byte;
 119     kernel_byte = (boot_img + GRUB_BOOT_AOUT_HEADER_SIZE
 120                    + GRUB_BOOT_MACHINE_KERNEL_BYTE);
 121     grub_set_unaligned64 (kernel_byte,
 122                           grub_cpu_to_be64 (first_sector << GRUB_DISK_SECTOR_BITS));
 123   }
 124 #endif
 125 }
 126
 127 #ifdef GRUB_SETUP_SPARC64
 128 #define BOOT_SECTOR 1
 129 #else
 130 #define BOOT_SECTOR 0
 131 #endif
 132
 133 /* Helper for setup.  */
 134
 135 struct blocklists
 136 {
 137   struct grub_boot_blocklist *first_block, *block;
 138 #ifdef GRUB_SETUP_BIOS
 139   grub_uint16_t current_segment;
 140 #endif
 141   grub_uint16_t last_length;
 142   grub_disk_addr_t first_sector;
 143 };
 144
 145 /* Helper for setup.  */
 146 static void
 147 save_blocklists (grub_disk_addr_t sector, unsigned offset, unsigned length,
 148                  void *data)
 149 {
 150   struct blocklists *bl = data;
 151   struct grub_boot_blocklist *prev = bl->block + 1;
 152   grub_uint64_t seclen;
 153
 154   grub_util_info ("saving <%"  GRUB_HOST_PRIuLONG_LONG ",%u,%u>",
 155                   (unsigned long long) sector, offset, length);
 156
 157   if (bl->first_sector == (grub_disk_addr_t) -1)
 158     {
 159       if (offset != 0 || length < GRUB_DISK_SECTOR_SIZE)
 160         grub_util_error ("%s", _("the first sector of the core file is not sector-aligned"));
 161
 162       bl->first_sector = sector;
 163       sector++;
 164       length -= GRUB_DISK_SECTOR_SIZE;
 165       if (!length)
 166         return;
 167     }
 168
 169   if (offset != 0 || bl->last_length != 0)
 170     grub_util_error ("%s", _("non-sector-aligned data is found in the core file"));
 171
 172   seclen = (length + GRUB_DISK_SECTOR_SIZE - 1) >> GRUB_DISK_SECTOR_BITS;
 173
 174   if (bl->block != bl->first_block
 175       && (grub_target_to_host64 (prev->start)
 176           + grub_target_to_host16 (prev->len)) == sector)
 177     {
 178       grub_uint16_t t = grub_target_to_host16 (prev->len);
 179       t += seclen;
 180       prev->len = grub_host_to_target16 (t);
 181     }
 182   else
 183     {
 184       bl->block->start = grub_host_to_target64 (sector);
 185       bl->block->len = grub_host_to_target16 (seclen);
 186 #ifdef GRUB_SETUP_BIOS
 187       bl->block->segment = grub_host_to_target16 (bl->current_segment);
 188 #endif
 189
 190       bl->block--;
 191       if (bl->block->len)
 192         grub_util_error ("%s", _("the sectors of the core file are too fragmented"));
 193     }
 194
 195   bl->last_length = length & (GRUB_DISK_SECTOR_SIZE - 1);
 196 #ifdef GRUB_SETUP_BIOS
 197   bl->current_segment += seclen << (GRUB_DISK_SECTOR_BITS - 4);
 198 #endif
 199 }
 200
 201 #ifdef GRUB_SETUP_BIOS
 202 /* Context for setup/identify_partmap.  */
 203 struct identify_partmap_ctx
 204 {
 205   grub_partition_map_t dest_partmap;
 206   grub_partition_t container;
 207   int multiple_partmaps;
 208 };
 209
 210 /* Helper for setup.
 211    Unlike root_dev, with dest_dev we're interested in the partition map even
 212    if dest_dev itself is a whole disk.  */
 213 static int
 214 identify_partmap (grub_disk_t disk __attribute__ ((unused)),
 215                   const grub_partition_t p, void *data)
 216 {
 217   struct identify_partmap_ctx *ctx = data;
 218
 219   if (p->parent != ctx->container)
 220     return 0;
 221   /* NetBSD and OpenBSD subpartitions have metadata inside a partition,
 222      so they are safe to ignore.
 223    */
 224   if (grub_strcmp (p->partmap->name, "netbsd") == 0
 225       || grub_strcmp (p->partmap->name, "openbsd") == 0)
 226     return 0;
 227   if (ctx->dest_partmap == NULL)
 228     {
 229       ctx->dest_partmap = p->partmap;
 230       return 0;
 231     }
 232   if (ctx->dest_partmap == p->partmap)
 233     return 0;
 234   ctx->multiple_partmaps = 1;
 235   return 1;
 236 }
 237 #endif
 238
 239 #ifdef GRUB_SETUP_BIOS
 240 #define SETUP grub_util_bios_setup
 241 #elif GRUB_SETUP_SPARC64
 242 #define SETUP grub_util_sparc_setup
 243 #else
 244 #error "Shouldn't happen"
 245 #endif
 246
 247 void
 248 SETUP (const char *dir,
 249        const char *boot_file, const char *core_file,
 250        const char *dest, int force,
 251        int fs_probe, int allow_floppy,
 252        int add_rs_codes __attribute__ ((unused))) /* unused on sparc64 */
 253 {
 254   char *core_path;
 255   char *boot_img, *core_img, *boot_path;
 256   char *root = 0;
 257   size_t boot_size, core_size;
 258 #ifdef GRUB_SETUP_BIOS
 259   grub_uint16_t core_sectors;
 260 #endif
 261   grub_device_t root_dev = 0, dest_dev, core_dev;
 262   grub_util_fd_t fp;
 263   struct blocklists bl;
 264
 265   bl.first_sector = (grub_disk_addr_t) -1;
 266
 267 #ifdef GRUB_SETUP_BIOS
 268   bl.current_segment =
 269     GRUB_BOOT_I386_PC_KERNEL_SEG + (GRUB_DISK_SECTOR_SIZE >> 4);
 270 #endif
 271   bl.last_length = 0;
 272
 273   /* Read the boot image by the OS service.  */
 274   boot_path = grub_util_get_path (dir, boot_file);
 275   boot_size = grub_util_get_image_size (boot_path);
 276   if (boot_size != GRUB_DISK_SECTOR_SIZE)
 277     grub_util_error (_("the size of `%s' is not %u"),
 278                      boot_path, GRUB_DISK_SECTOR_SIZE);
 279   boot_img = grub_util_read_image (boot_path);
 280   free (boot_path);
 281
 282   core_path = grub_util_get_path (dir, core_file);
 283   core_size = grub_util_get_image_size (core_path);
 284 #ifdef GRUB_SETUP_BIOS
 285   core_sectors = ((core_size + GRUB_DISK_SECTOR_SIZE - 1)
 286                   >> GRUB_DISK_SECTOR_BITS);
 287 #endif
 288   if (core_size < GRUB_DISK_SECTOR_SIZE)
 289     grub_util_error (_("the size of `%s' is too small"), core_path);
 290 #ifdef GRUB_SETUP_BIOS
 291   if (core_size > 0xFFFF * GRUB_DISK_SECTOR_SIZE)
 292     grub_util_error (_("the size of `%s' is too large"), core_path);
 293 #endif
 294
 295   core_img = grub_util_read_image (core_path);
 296
 297   /* Have FIRST_BLOCK to point to the first blocklist.  */
 298   bl.first_block = (struct grub_boot_blocklist *) (core_img
 299                                                    + GRUB_DISK_SECTOR_SIZE
 300                                                    - sizeof (*bl.block));
 301   grub_util_info ("root is `%s', dest is `%s'", root, dest);
 302
 303   grub_util_info ("Opening dest");
 304   dest_dev = grub_device_open (dest);
 305   if (! dest_dev)
 306     grub_util_error ("%s", grub_errmsg);
 307
 308   core_dev = dest_dev;
 309
 310   {
 311     char **root_devices = grub_guess_root_devices (dir);
 312     char **cur;
 313     int found = 0;
 314
 315     for (cur = root_devices; *cur; cur++)
 316       {
 317         char *drive;
 318         grub_device_t try_dev;
 319
 320         drive = grub_util_get_grub_dev (*cur);
 321         if (!drive)
 322           continue;
 323         try_dev = grub_device_open (drive);
 324         if (! try_dev)
 325           {
 326             free (drive);
 327             continue;
 328           }
 329         if (!found && try_dev->disk->id == dest_dev->disk->id
 330             && try_dev->disk->dev->id == dest_dev->disk->dev->id)
 331           {
 332             if (root_dev)
 333               grub_device_close (root_dev);
 334             free (root);
 335             root_dev = try_dev;
 336             root = drive;
 337             found = 1;
 338             continue;
 339           }
 340         if (!root_dev)
 341           {
 342             root_dev = try_dev;
 343             root = drive;
 344             continue;
 345           }
 346         grub_device_close (try_dev);
 347         free (drive);
 348       }
 349     if (!root_dev)
 350       {
 351         grub_util_error ("guessing the root device failed, because of `%s'",
 352                          grub_errmsg);
 353       }
 354     grub_util_info ("guessed root_dev `%s' from "
 355                     "dir `%s'", root_dev->disk->name, dir);
 356   }
 357
 358   grub_util_info ("setting the root device to `%s'", root);
 359   if (grub_env_set ("root", root) != GRUB_ERR_NONE)
 360     grub_util_error ("%s", grub_errmsg);
 361
 362 #ifdef GRUB_SETUP_BIOS
 363   {
 364     char *tmp_img;
 365     grub_uint8_t *boot_drive_check;
 366
 367     /* Read the original sector from the disk.  */
 368     tmp_img = xmalloc (GRUB_DISK_SECTOR_SIZE);
 369     if (grub_disk_read (dest_dev->disk, 0, 0, GRUB_DISK_SECTOR_SIZE, tmp_img))
 370       grub_util_error ("%s", grub_errmsg);
 371
 372     boot_drive_check = (grub_uint8_t *) (boot_img
 373                                           + GRUB_BOOT_MACHINE_DRIVE_CHECK);
 374     /* Copy the possible DOS BPB.  */
 375     memcpy (boot_img + GRUB_BOOT_MACHINE_BPB_START,
 376             tmp_img + GRUB_BOOT_MACHINE_BPB_START,
 377             GRUB_BOOT_MACHINE_BPB_END - GRUB_BOOT_MACHINE_BPB_START);
 378
 379     /* If DEST_DRIVE is a hard disk, enable the workaround, which is
 380        for buggy BIOSes which don't pass boot drive correctly. Instead,
 381        they pass 0x00 or 0x01 even when booted from 0x80.  */
 382     if (!allow_floppy && !grub_util_biosdisk_is_floppy (dest_dev->disk))
 383       {
 384         /* Replace the jmp (2 bytes) with double nop's.  */
 385         boot_drive_check[0] = 0x90;
 386         boot_drive_check[1] = 0x90;
 387       }
 388
 389     struct identify_partmap_ctx ctx = {
 390       .dest_partmap = NULL,
 391       .container = dest_dev->disk->partition,
 392       .multiple_partmaps = 0
 393     };
 394     int is_ldm;
 395     grub_err_t err;
 396     grub_disk_addr_t *sectors;
 397     int i;
 398     grub_fs_t fs;
 399     unsigned int nsec, maxsec;
 400
 401     grub_partition_iterate (dest_dev->disk, identify_partmap, &ctx);
 402
 403     /* Copy the partition table.  */
 404     if (ctx.dest_partmap ||
 405         (!allow_floppy && !grub_util_biosdisk_is_floppy (dest_dev->disk)))
 406       memcpy (boot_img + GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC,
 407               tmp_img + GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC,
 408               GRUB_BOOT_MACHINE_PART_END - GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC);
 409
 410     free (tmp_img);
 411
 412     if (ctx.container
 413         && grub_strcmp (ctx.container->partmap->name, "msdos") == 0
 414         && ctx.dest_partmap
 415         && (ctx.container->msdostype == GRUB_PC_PARTITION_TYPE_NETBSD
 416             || ctx.container->msdostype == GRUB_PC_PARTITION_TYPE_OPENBSD))
 417       {
 418         grub_util_warn ("%s", _("Attempting to install GRUB to a disk with multiple partition labels or both partition label and filesystem.  This is not supported yet."));
 419         goto unable_to_embed;
 420       }
 421
 422     fs = grub_fs_probe (dest_dev);
 423     if (!fs)
 424       grub_errno = GRUB_ERR_NONE;
 425
 426     is_ldm = grub_util_is_ldm (dest_dev->disk);
 427
 428     if (fs_probe)
 429       {
 430         if (!fs && !ctx.dest_partmap)
 431           grub_util_error (_("unable to identify a filesystem in %s; safety check can't be performed"),
 432                            dest_dev->disk->name);
 433         if (fs && !fs->reserved_first_sector)
 434           /* TRANSLATORS: Filesystem may reserve the space just GRUB isn't sure about it.  */
 435           grub_util_error (_("%s appears to contain a %s filesystem which isn't known to "
 436                              "reserve space for DOS-style boot.  Installing GRUB there could "
 437                              "result in FILESYSTEM DESTRUCTION if valuable data is overwritten "
 438                              "by grub-setup (--skip-fs-probe disables this "
 439                              "check, use at your own risk)"), dest_dev->disk->name, fs->name);
 440
 441         if (ctx.dest_partmap && strcmp (ctx.dest_partmap->name, "msdos") != 0
 442             && strcmp (ctx.dest_partmap->name, "gpt") != 0
 443             && strcmp (ctx.dest_partmap->name, "bsd") != 0
 444             && strcmp (ctx.dest_partmap->name, "netbsd") != 0
 445             && strcmp (ctx.dest_partmap->name, "openbsd") != 0
 446             && strcmp (ctx.dest_partmap->name, "sunpc") != 0)
 447           /* TRANSLATORS: Partition map may reserve the space just GRUB isn't sure about it.  */
 448           grub_util_error (_("%s appears to contain a %s partition map which isn't known to "
 449                              "reserve space for DOS-style boot.  Installing GRUB there could "
 450                              "result in FILESYSTEM DESTRUCTION if valuable data is overwritten "
 451                              "by grub-setup (--skip-fs-probe disables this "
 452                              "check, use at your own risk)"), dest_dev->disk->name, ctx.dest_partmap->name);
 453         if (is_ldm && ctx.dest_partmap && strcmp (ctx.dest_partmap->name, "msdos") != 0
 454             && strcmp (ctx.dest_partmap->name, "gpt") != 0)
 455           grub_util_error (_("%s appears to contain a %s partition map and "
 456                              "LDM which isn't known to be a safe combination."
 457                              "  Installing GRUB there could "
 458                              "result in FILESYSTEM DESTRUCTION if valuable data"
 459                              " is overwritten "
 460                              "by grub-setup (--skip-fs-probe disables this "
 461                              "check, use at your own risk)"),
 462                            dest_dev->disk->name, ctx.dest_partmap->name);
 463
 464       }
 465
 466     if (! ctx.dest_partmap && ! fs && !is_ldm)
 467       {
 468         grub_util_warn ("%s", _("Attempting to install GRUB to a partitionless disk or to a partition.  This is a BAD idea."));
 469         goto unable_to_embed;
 470       }
 471     if (ctx.multiple_partmaps || (ctx.dest_partmap && fs) || (is_ldm && fs))
 472       {
 473         grub_util_warn ("%s", _("Attempting to install GRUB to a disk with multiple partition labels.  This is not supported yet."));
 474         goto unable_to_embed;
 475       }
 476
 477     if (ctx.dest_partmap && !ctx.dest_partmap->embed)
 478       {
 479         grub_util_warn (_("Partition style `%s' doesn't support embedding"),
 480                         ctx.dest_partmap->name);
 481         goto unable_to_embed;
 482       }
 483
 484     if (fs && !fs->embed)
 485       {
 486         grub_util_warn (_("File system `%s' doesn't support embedding"),
 487                         fs->name);
 488         goto unable_to_embed;
 489       }
 490
 491     nsec = core_sectors;
 492
 493     if (add_rs_codes)
 494       maxsec = 2 * core_sectors;
 495     else
 496       maxsec = core_sectors;
 497
 498     if (maxsec > ((0x78000 - GRUB_KERNEL_I386_PC_LINK_ADDR)
 499                 >> GRUB_DISK_SECTOR_BITS))
 500       maxsec = ((0x78000 - GRUB_KERNEL_I386_PC_LINK_ADDR)
 501                 >> GRUB_DISK_SECTOR_BITS);
 502
 503     if (is_ldm)
 504       err = grub_util_ldm_embed (dest_dev->disk, &nsec, maxsec,
 505                                  GRUB_EMBED_PCBIOS, &sectors);
 506     else if (ctx.dest_partmap)
 507       err = ctx.dest_partmap->embed (dest_dev->disk, &nsec, maxsec,
 508                                      GRUB_EMBED_PCBIOS, &sectors);
 509     else
 510       err = fs->embed (dest_dev, &nsec, maxsec,
 511                        GRUB_EMBED_PCBIOS, &sectors);
 512     if (!err && nsec < core_sectors)
 513       {
 514         err = grub_error (GRUB_ERR_OUT_OF_RANGE,
 515                           N_("Your embedding area is unusually small.  "
 516                              "core.img won't fit in it."));
 517       }
 518
 519     if (err)
 520       {
 521         grub_util_warn ("%s", grub_errmsg);
 522         grub_errno = GRUB_ERR_NONE;
 523         goto unable_to_embed;
 524       }
 525
 526     assert (nsec <= maxsec);
 527
 528     /* Clean out the blocklists.  */
 529     bl.block = bl.first_block;
 530     while (bl.block->len)
 531       {
 532         grub_memset (bl.block, 0, sizeof (*bl.block));
 533
 534         bl.block--;
 535
 536         if ((char *) bl.block <= core_img)
 537           grub_util_error ("%s", _("no terminator in the core image"));
 538       }
 539
 540     bl.block = bl.first_block;
 541     for (i = 0; i < nsec; i++)
 542       save_blocklists (sectors[i] + grub_partition_get_start (ctx.container),
 543                        0, GRUB_DISK_SECTOR_SIZE, &bl);
 544
 545     /* Make sure that the last blocklist is a terminator.  */
 546     if (bl.block == bl.first_block)
 547       bl.block--;
 548     bl.block->start = 0;
 549     bl.block->len = 0;
 550     bl.block->segment = 0;
 551
 552     write_rootdev (root_dev, boot_img, bl.first_sector);
 553
 554     /* Round up to the nearest sector boundary, and zero the extra memory */
 555     core_img = xrealloc (core_img, nsec * GRUB_DISK_SECTOR_SIZE);
 556     assert (core_img && (nsec * GRUB_DISK_SECTOR_SIZE >= core_size));
 557     memset (core_img + core_size, 0, nsec * GRUB_DISK_SECTOR_SIZE - core_size);
 558
 559     bl.first_block = (struct grub_boot_blocklist *) (core_img
 560                                                      + GRUB_DISK_SECTOR_SIZE
 561                                                      - sizeof (*bl.block));
 562
 563     grub_size_t no_rs_length;
 564     no_rs_length = grub_target_to_host16
 565       (grub_get_unaligned16 (core_img
 566                              + GRUB_DISK_SECTOR_SIZE
 567                              + GRUB_KERNEL_I386_PC_NO_REED_SOLOMON_LENGTH));
 568
 569     if (no_rs_length == 0xffff)
 570       grub_util_error ("%s", _("core.img version mismatch"));
 571
 572     if (add_rs_codes)
 573       {
 574         grub_set_unaligned32 ((core_img + GRUB_DISK_SECTOR_SIZE
 575                                + GRUB_KERNEL_I386_PC_REED_SOLOMON_REDUNDANCY),
 576                               grub_host_to_target32 (nsec * GRUB_DISK_SECTOR_SIZE - core_size));
 577
 578         void *tmp = xmalloc (core_size);
 579         grub_memcpy (tmp, core_img, core_size);
 580         grub_reed_solomon_add_redundancy (core_img + no_rs_length + GRUB_DISK_SECTOR_SIZE,
 581                                           core_size - no_rs_length - GRUB_DISK_SECTOR_SIZE,
 582                                           nsec * GRUB_DISK_SECTOR_SIZE
 583                                           - core_size);
 584         assert (grub_memcmp (tmp, core_img, core_size) == 0);
 585         free (tmp);
 586       }
 587
 588     /* Write the core image onto the disk.  */
 589     for (i = 0; i < nsec; i++)
 590       grub_disk_write (dest_dev->disk, sectors[i], 0,
 591                        GRUB_DISK_SECTOR_SIZE,
 592                        core_img + i * GRUB_DISK_SECTOR_SIZE);
 593
 594     grub_free (sectors);
 595
 596     goto finish;
 597   }
 598
 599 unable_to_embed:
 600 #endif
 601
 602   if (dest_dev->disk->dev->id != root_dev->disk->dev->id)
 603     grub_util_error ("%s", _("embedding is not possible, but this is required for "
 604                              "RAID and LVM install"));
 605
 606   {
 607     grub_fs_t fs;
 608     fs = grub_fs_probe (root_dev);
 609     if (!fs)
 610       grub_util_error (_("can't determine filesystem on %s"), root);
 611
 612     if (!fs->blocklist_install)
 613       grub_util_error (_("filesystem `%s' doesn't support blocklists"),
 614                        fs->name);
 615   }
 616
 617 #ifdef GRUB_SETUP_BIOS
 618   if (dest_dev->disk->id != root_dev->disk->id
 619       || dest_dev->disk->dev->id != root_dev->disk->dev->id)
 620     /* TRANSLATORS: cross-disk refers to /boot being on one disk
 621        but MBR on another.  */
 622     grub_util_error ("%s", _("embedding is not possible, but this is required for "
 623                              "cross-disk install"));
 624 #else
 625   core_dev = root_dev;
 626 #endif
 627
 628   grub_util_warn ("%s", _("Embedding is not possible.  GRUB can only be installed in this "
 629                           "setup by using blocklists.  However, blocklists are UNRELIABLE and "
 630                           "their use is discouraged."));
 631   if (! force)
 632     /* TRANSLATORS: Here GRUB refuses to continue with blocklist install.  */
 633     grub_util_error ("%s", _("will not proceed with blocklists"));
 634
 635   /* The core image must be put on a filesystem unfortunately.  */
 636   grub_util_info ("will leave the core image on the filesystem");
 637
 638   grub_util_biosdisk_flush (root_dev->disk);
 639
 640   /* Clean out the blocklists.  */
 641   bl.block = bl.first_block;
 642   while (bl.block->len)
 643     {
 644       bl.block->start = 0;
 645       bl.block->len = 0;
 646 #ifdef GRUB_SETUP_BIOS
 647       bl.block->segment = 0;
 648 #endif
 649
 650       bl.block--;
 651
 652       if ((char *) bl.block <= core_img)
 653         grub_util_error ("%s", _("no terminator in the core image"));
 654     }
 655
 656   bl.block = bl.first_block;
 657
 658   grub_install_get_blocklist (root_dev, core_path, core_img, core_size,
 659                               save_blocklists, &bl);
 660
 661   if (bl.first_sector == (grub_disk_addr_t)-1)
 662     grub_util_error ("%s", _("can't retrieve blocklists"));
 663
 664 #ifdef GRUB_SETUP_SPARC64
 665   {
 666     char *boot_devpath;
 667     boot_devpath = (char *) (boot_img
 668                              + GRUB_BOOT_AOUT_HEADER_SIZE
 669                              + GRUB_BOOT_MACHINE_BOOT_DEVPATH);
 670     if (dest_dev->disk->id != root_dev->disk->id
 671         || dest_dev->disk->dev->id != root_dev->disk->dev->id)
 672       {
 673         char *dest_ofpath;
 674         dest_ofpath
 675           = grub_util_devname_to_ofpath (grub_util_biosdisk_get_osdev (root_dev->disk));
 676         /* FIXME handle NULL result */
 677         grub_util_info ("dest_ofpath is `%s'", dest_ofpath);
 678         strncpy (boot_devpath, dest_ofpath,
 679                  GRUB_BOOT_MACHINE_BOOT_DEVPATH_END
 680                  - GRUB_BOOT_MACHINE_BOOT_DEVPATH - 1);
 681         boot_devpath[GRUB_BOOT_MACHINE_BOOT_DEVPATH_END
 682                    - GRUB_BOOT_MACHINE_BOOT_DEVPATH - 1] = 0;
 683         free (dest_ofpath);
 684       }
 685     else
 686       {
 687         grub_util_info ("non cross-disk install");
 688         memset (boot_devpath, 0, GRUB_BOOT_MACHINE_BOOT_DEVPATH_END
 689                 - GRUB_BOOT_MACHINE_BOOT_DEVPATH);
 690       }
 691     grub_util_info ("boot device path %s", boot_devpath);
 692   }
 693 #endif
 694
 695   write_rootdev (root_dev, boot_img, bl.first_sector);
 696
 697   /* Write the first two sectors of the core image onto the disk.  */
 698   grub_util_info ("opening the core image `%s'", core_path);
 699   fp = grub_util_fd_open (core_path, GRUB_UTIL_FD_O_WRONLY);
 700   if (! GRUB_UTIL_FD_IS_VALID (fp))
 701     grub_util_error (_("cannot open `%s': %s"), core_path,
 702                      grub_util_fd_strerror ());
 703
 704   if (grub_util_fd_write (fp, core_img, GRUB_DISK_SECTOR_SIZE * 2)
 705       != GRUB_DISK_SECTOR_SIZE * 2)
 706     grub_util_error (_("cannot write to `%s': %s"),
 707                      core_path, strerror (errno));
 708   grub_util_fd_sync (fp);
 709   grub_util_fd_close (fp);
 710   grub_util_biosdisk_flush (root_dev->disk);
 711
 712   grub_disk_cache_invalidate_all ();
 713
 714   {
 715     char *buf, *ptr = core_img;
 716     size_t len = core_size;
 717     grub_uint64_t blk;
 718     grub_partition_t container = core_dev->disk->partition;
 719     grub_err_t err;
 720
 721     core_dev->disk->partition = 0;
 722
 723     buf = xmalloc (core_size);
 724     blk = bl.first_sector;
 725     err = grub_disk_read (core_dev->disk, blk, 0, GRUB_DISK_SECTOR_SIZE, buf);
 726     if (err)
 727       grub_util_error (_("cannot read `%s': %s"), core_dev->disk->name,
 728                        grub_errmsg);
 729     if (grub_memcmp (buf, ptr, GRUB_DISK_SECTOR_SIZE) != 0)
 730       grub_util_error ("%s", _("blocklists are invalid"));
 731
 732     ptr += GRUB_DISK_SECTOR_SIZE;
 733     len -= GRUB_DISK_SECTOR_SIZE;
 734
 735     bl.block = bl.first_block;
 736     while (bl.block->len)
 737       {
 738         size_t cur = grub_target_to_host16 (bl.block->len) << GRUB_DISK_SECTOR_BITS;
 739         blk = grub_target_to_host64 (bl.block->start);
 740
 741         if (cur > len)
 742           cur = len;
 743
 744         err = grub_disk_read (core_dev->disk, blk, 0, cur, buf);
 745         if (err)
 746           grub_util_error (_("cannot read `%s': %s"), core_dev->disk->name,
 747                            grub_errmsg);
 748
 749         if (grub_memcmp (buf, ptr, cur) != 0)
 750           grub_util_error ("%s", _("blocklists are invalid"));
 751
 752         ptr += cur;
 753         len -= cur;
 754         bl.block--;
 755
 756         if ((char *) bl.block <= core_img)
 757           grub_util_error ("%s", _("no terminator in the core image"));
 758       }
 759     if (len)
 760       grub_util_error ("%s", _("blocklists are incomplete"));
 761     core_dev->disk->partition = container;
 762     free (buf);
 763   }
 764
 765 #ifdef GRUB_SETUP_BIOS
 766  finish:
 767 #endif
 768
 769   /* Write the boot image onto the disk.  */
 770   if (grub_disk_write (dest_dev->disk, BOOT_SECTOR,
 771                        0, GRUB_DISK_SECTOR_SIZE, boot_img))
 772     grub_util_error ("%s", grub_errmsg);
 773
 774   grub_util_biosdisk_flush (root_dev->disk);
 775   grub_util_biosdisk_flush (dest_dev->disk);
 776
 777   free (core_path);
 778   free (core_img);
 779   free (boot_img);
 780   grub_device_close (dest_dev);
 781   grub_device_close (root_dev);
 782 }
 783