Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 877 insertions, 0 deletions

diff --git a/util/setup.c b/util/setup.c
new file mode 100644
index 0000000..da5f2c0
--- /dev/null
+++ b/util/setup.c
@@ -0,0 +1,877 @@
+/* grub-setup.c - make GRUB usable */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <grub/types.h>
+#include <grub/emu/misc.h>
+#include <grub/util/misc.h>
+#include <grub/device.h>
+#include <grub/disk.h>
+#include <grub/file.h>
+#include <grub/fs.h>
+#include <grub/partition.h>
+#include <grub/env.h>
+#include <grub/emu/hostdisk.h>
+#include <grub/term.h>
+#include <grub/i18n.h>
+
+#ifdef GRUB_SETUP_SPARC64
+#include <grub/util/ofpath.h>
+#include <grub/sparc64/ieee1275/boot.h>
+#include <grub/sparc64/ieee1275/kernel.h>
+#else
+#include <grub/i386/pc/boot.h>
+#include <grub/i386/pc/kernel.h>
+#endif
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <assert.h>
+#include <grub/emu/getroot.h>
+#include "progname.h"
+#include <grub/reed_solomon.h>
+#include <grub/msdos_partition.h>
+#include <grub/crypto.h>
+#include <grub/util/install.h>
+#include <grub/emu/hostfile.h>
+
+#include <errno.h>
+
+/* On SPARC this program fills in various fields inside of the 'boot' and 'core'
+ * image files.
+ *
+ * The 'boot' image needs to know the OBP path name of the root
+ * device.  It also needs to know the initial block number of
+ * 'core' (which is 'diskboot' concatenated with 'kernel' and
+ * all the modules, this is created by grub-mkimage).  This resulting
+ * 'boot' image is 512 bytes in size and is placed in the second block
+ * of a partition.
+ *
+ * The initial 'diskboot' block acts as a loader for the actual GRUB
+ * kernel.  It contains the loading code and then a block list.
+ *
+ * The block list of 'core' starts at the end of the 'diskboot' image
+ * and works it's way backwards towards the end of the code of 'diskboot'.
+ *
+ * We patch up the images with the necessary values and write out the
+ * result.
+ */
+
+#ifdef GRUB_SETUP_SPARC64
+#define grub_target_to_host16(x)	grub_be_to_cpu16(x)
+#define grub_target_to_host32(x)	grub_be_to_cpu32(x)
+#define grub_target_to_host64(x)	grub_be_to_cpu64(x)
+#define grub_host_to_target16(x)	grub_cpu_to_be16(x)
+#define grub_host_to_target32(x)	grub_cpu_to_be32(x)
+#define grub_host_to_target64(x)	grub_cpu_to_be64(x)
+#elif defined (GRUB_SETUP_BIOS)
+#define grub_target_to_host16(x)	grub_le_to_cpu16(x)
+#define grub_target_to_host32(x)	grub_le_to_cpu32(x)
+#define grub_target_to_host64(x)	grub_le_to_cpu64(x)
+#define grub_host_to_target16(x)	grub_cpu_to_le16(x)
+#define grub_host_to_target32(x)	grub_cpu_to_le32(x)
+#define grub_host_to_target64(x)	grub_cpu_to_le64(x)
+#else
+#error Complete this
+#endif
+
+static void
+write_rootdev (grub_device_t root_dev,
+	       char *boot_img, grub_uint64_t first_sector)
+{
+#ifdef GRUB_SETUP_BIOS
+  {
+    grub_uint8_t *boot_drive;
+    void *kernel_sector;
+    boot_drive = (grub_uint8_t *) (boot_img + GRUB_BOOT_MACHINE_BOOT_DRIVE);
+    kernel_sector = (boot_img + GRUB_BOOT_MACHINE_KERNEL_SECTOR);
+
+    /* FIXME: can this be skipped?  */
+    *boot_drive = 0xFF;
+
+    grub_set_unaligned64 (kernel_sector, grub_cpu_to_le64 (first_sector));
+  }
+#endif
+#ifdef GRUB_SETUP_SPARC64
+  {
+    void *kernel_byte;
+    kernel_byte = (boot_img + GRUB_BOOT_AOUT_HEADER_SIZE
+		   + GRUB_BOOT_MACHINE_KERNEL_BYTE);
+    grub_set_unaligned64 (kernel_byte,
+			  grub_cpu_to_be64 (first_sector << GRUB_DISK_SECTOR_BITS));
+  }
+#endif
+}
+
+#ifdef GRUB_SETUP_SPARC64
+#define BOOT_SECTOR 1
+#else
+#define BOOT_SECTOR 0
+#endif
+
+/* Helper for setup.  */
+
+struct blocklists
+{
+  struct grub_boot_blocklist *first_block, *block;
+#ifdef GRUB_SETUP_BIOS
+  grub_uint16_t current_segment;
+#endif
+#ifdef GRUB_SETUP_SPARC64
+  grub_uint64_t gpt_offset;
+#endif
+  grub_uint16_t last_length;
+  grub_disk_addr_t first_sector;
+};
+
+/* Helper for setup.  */
+static void
+save_blocklists (grub_disk_addr_t sector, unsigned offset, unsigned length,
+		 void *data)
+{
+  struct blocklists *bl = data;
+  struct grub_boot_blocklist *prev = bl->block + 1;
+  grub_uint64_t seclen;
+
+#ifdef GRUB_SETUP_SPARC64
+  sector -= bl->gpt_offset;
+#endif
+
+  grub_util_info ("saving <%"  GRUB_HOST_PRIuLONG_LONG ",%u,%u>",
+		  (unsigned long long) sector, offset, length);
+
+  if (bl->first_sector == (grub_disk_addr_t) -1)
+    {
+      if (offset != 0 || length < GRUB_DISK_SECTOR_SIZE)
+	grub_util_error ("%s", _("the first sector of the core file is not sector-aligned"));
+
+      bl->first_sector = sector;
+      sector++;
+      length -= GRUB_DISK_SECTOR_SIZE;
+      if (!length)
+	return;
+    }
+
+  if (offset != 0 || bl->last_length != 0)
+    grub_util_error ("%s", _("non-sector-aligned data is found in the core file"));
+
+  seclen = (length + GRUB_DISK_SECTOR_SIZE - 1) >> GRUB_DISK_SECTOR_BITS;
+
+  if (bl->block != bl->first_block
+      && (grub_target_to_host64 (prev->start)
+	  + grub_target_to_host16 (prev->len)) == sector)
+    {
+      grub_uint16_t t = grub_target_to_host16 (prev->len);
+      t += seclen;
+      prev->len = grub_host_to_target16 (t);
+    }
+  else
+    {
+      bl->block->start = grub_host_to_target64 (sector);
+      bl->block->len = grub_host_to_target16 (seclen);
+#ifdef GRUB_SETUP_BIOS
+      bl->block->segment = grub_host_to_target16 (bl->current_segment);
+#endif
+
+      bl->block--;
+      if (bl->block->len)
+	grub_util_error ("%s", _("the sectors of the core file are too fragmented"));
+    }
+
+  bl->last_length = length & (GRUB_DISK_SECTOR_SIZE - 1);
+#ifdef GRUB_SETUP_BIOS
+  bl->current_segment += seclen << (GRUB_DISK_SECTOR_BITS - 4);
+#endif
+}
+
+/* Context for setup/identify_partmap.  */
+struct identify_partmap_ctx
+{
+  grub_partition_map_t dest_partmap;
+  grub_partition_t container;
+  int multiple_partmaps;
+};
+
+/* Helper for setup.
+   Unlike root_dev, with dest_dev we're interested in the partition map even
+   if dest_dev itself is a whole disk.  */
+static int
+identify_partmap (grub_disk_t disk __attribute__ ((unused)),
+		  const grub_partition_t p, void *data)
+{
+  struct identify_partmap_ctx *ctx = data;
+
+  if (p->parent != ctx->container)
+    return 0;
+  /* NetBSD and OpenBSD subpartitions have metadata inside a partition,
+     so they are safe to ignore.
+   */
+  if (grub_strcmp (p->partmap->name, "netbsd") == 0
+      || grub_strcmp (p->partmap->name, "openbsd") == 0)
+    return 0;
+  if (ctx->dest_partmap == NULL)
+    {
+      ctx->dest_partmap = p->partmap;
+      return 0;
+    }
+  if (ctx->dest_partmap == p->partmap)
+    return 0;
+  ctx->multiple_partmaps = 1;
+  return 1;
+}
+
+#ifdef GRUB_SETUP_BIOS
+#define SETUP grub_util_bios_setup
+#elif GRUB_SETUP_SPARC64
+#define SETUP grub_util_sparc_setup
+#else
+#error "Shouldn't happen"
+#endif
+
+void
+SETUP (const char *dir,
+       const char *boot_file, const char *core_file,
+       const char *dest, int force,
+       int fs_probe, int allow_floppy,
+       int add_rs_codes __attribute__ ((unused)), /* unused on sparc64 */
+       int warn_small)
+{
+  char *core_path;
+  char *boot_img, *core_img, *boot_path;
+  char *root = 0;
+  size_t boot_size, core_size;
+  grub_uint16_t core_sectors;
+  grub_device_t root_dev = 0, dest_dev, core_dev;
+  grub_util_fd_t fp;
+  struct blocklists bl;
+
+  bl.first_sector = (grub_disk_addr_t) -1;
+
+#ifdef GRUB_SETUP_BIOS
+  bl.current_segment =
+    GRUB_BOOT_I386_PC_KERNEL_SEG + (GRUB_DISK_SECTOR_SIZE >> 4);
+#endif
+#ifdef GRUB_SETUP_SPARC64
+  bl.gpt_offset = 0;
+#endif
+  bl.last_length = 0;
+
+  /* Read the boot image by the OS service.  */
+  boot_path = grub_util_get_path (dir, boot_file);
+  boot_size = grub_util_get_image_size (boot_path);
+  if (boot_size != GRUB_DISK_SECTOR_SIZE)
+    grub_util_error (_("the size of `%s' is not %u"),
+		     boot_path, GRUB_DISK_SECTOR_SIZE);
+  boot_img = grub_util_read_image (boot_path);
+  free (boot_path);
+
+  core_path = grub_util_get_path (dir, core_file);
+  core_size = grub_util_get_image_size (core_path);
+  core_sectors = ((core_size + GRUB_DISK_SECTOR_SIZE - 1)
+		  >> GRUB_DISK_SECTOR_BITS);
+  if (core_size < GRUB_DISK_SECTOR_SIZE)
+    grub_util_error (_("the size of `%s' is too small"), core_path);
+#ifdef GRUB_SETUP_BIOS
+  if (core_size > 0xFFFF * GRUB_DISK_SECTOR_SIZE)
+    grub_util_error (_("the size of `%s' is too large"), core_path);
+#endif
+
+  core_img = grub_util_read_image (core_path);
+
+  /* Have FIRST_BLOCK to point to the first blocklist.  */
+  bl.first_block = (struct grub_boot_blocklist *) (core_img
+						   + GRUB_DISK_SECTOR_SIZE
+						   - sizeof (*bl.block));
+
+  grub_util_info ("Opening dest `%s'", dest);
+  dest_dev = grub_device_open (dest);
+  if (! dest_dev)
+    grub_util_error ("%s", grub_errmsg);
+
+  core_dev = dest_dev;
+
+  {
+    char **root_devices = grub_guess_root_devices (dir);
+    char **cur;
+    int found = 0;
+
+    if (!root_devices)
+      grub_util_error (_("cannot find a device for %s (is /dev mounted?)"), dir);
+
+    for (cur = root_devices; *cur; cur++)
+      {
+	char *drive;
+	grub_device_t try_dev;
+
+	drive = grub_util_get_grub_dev (*cur);
+	if (!drive)
+	  continue;
+	try_dev = grub_device_open (drive);
+	if (! try_dev)
+	  {
+	    free (drive);
+	    continue;
+	  }
+	if (!found && try_dev->disk->id == dest_dev->disk->id
+	    && try_dev->disk->dev->id == dest_dev->disk->dev->id)
+	  {
+	    if (root_dev)
+	      grub_device_close (root_dev);
+	    free (root);
+	    root_dev = try_dev;
+	    root = drive;
+	    found = 1;
+	    continue;
+	  }
+	if (!root_dev)
+	  {
+	    root_dev = try_dev;
+	    root = drive;
+	    continue;
+	  }
+	grub_device_close (try_dev);	
+	free (drive);
+      }
+    if (!root_dev)
+      {
+	grub_util_error ("guessing the root device failed, because of `%s'",
+			 grub_errmsg);
+      }
+    grub_util_info ("guessed root_dev `%s' from "
+		    "dir `%s'", root_dev->disk->name, dir);
+
+    for (cur = root_devices; *cur; cur++)
+      free (*cur);
+    free (root_devices);
+  }
+
+  grub_util_info ("setting the root device to `%s'", root);
+  if (grub_env_set ("root", root) != GRUB_ERR_NONE)
+    grub_util_error ("%s", grub_errmsg);
+
+  {
+#ifdef GRUB_SETUP_BIOS
+    char *tmp_img;
+    grub_uint8_t *boot_drive_check;
+
+    /* Read the original sector from the disk.  */
+    tmp_img = xmalloc (GRUB_DISK_SECTOR_SIZE);
+    if (grub_disk_read (dest_dev->disk, 0, 0, GRUB_DISK_SECTOR_SIZE, tmp_img))
+      grub_util_error ("%s", grub_errmsg);
+    
+    boot_drive_check = (grub_uint8_t *) (boot_img
+					  + GRUB_BOOT_MACHINE_DRIVE_CHECK);
+    /* Copy the possible DOS BPB.  */
+    memcpy (boot_img + GRUB_BOOT_MACHINE_BPB_START,
+	    tmp_img + GRUB_BOOT_MACHINE_BPB_START,
+	    GRUB_BOOT_MACHINE_BPB_END - GRUB_BOOT_MACHINE_BPB_START);
+
+    /* If DEST_DRIVE is a hard disk, enable the workaround, which is
+       for buggy BIOSes which don't pass boot drive correctly. Instead,
+       they pass 0x00 or 0x01 even when booted from 0x80.  */
+    if (!allow_floppy && !grub_util_biosdisk_is_floppy (dest_dev->disk))
+      {
+	/* Replace the jmp (2 bytes) with double nop's.  */
+	boot_drive_check[0] = 0x90;
+	boot_drive_check[1] = 0x90;
+      }
+#endif
+
+    struct identify_partmap_ctx ctx = {
+      .dest_partmap = NULL,
+      .container = dest_dev->disk->partition,
+      .multiple_partmaps = 0
+    };
+    int is_ldm;
+    grub_err_t err;
+    grub_disk_addr_t *sectors;
+    int i;
+    grub_fs_t fs;
+    unsigned int nsec, maxsec;
+
+    grub_partition_iterate (dest_dev->disk, identify_partmap, &ctx);
+
+#ifdef GRUB_SETUP_BIOS
+    /* Copy the partition table.  */
+    if (ctx.dest_partmap ||
+        (!allow_floppy && !grub_util_biosdisk_is_floppy (dest_dev->disk)))
+      memcpy (boot_img + GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC,
+	      tmp_img + GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC,
+	      GRUB_BOOT_MACHINE_PART_END - GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC);
+
+    free (tmp_img);
+#endif
+
+    if (ctx.container
+	&& grub_strcmp (ctx.container->partmap->name, "msdos") == 0
+	&& ctx.dest_partmap
+	&& (ctx.container->msdostype == GRUB_PC_PARTITION_TYPE_NETBSD
+	    || ctx.container->msdostype == GRUB_PC_PARTITION_TYPE_OPENBSD))
+      {
+	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."));
+	goto unable_to_embed;
+      }
+
+    fs = grub_fs_probe (dest_dev);
+    if (!fs)
+      grub_errno = GRUB_ERR_NONE;
+
+    is_ldm = grub_util_is_ldm (dest_dev->disk);
+
+    if (fs_probe)
+      {
+	if (!fs && !ctx.dest_partmap)
+	  grub_util_error (_("unable to identify a filesystem in %s; safety check can't be performed"),
+			   dest_dev->disk->name);
+	if (fs && !fs->reserved_first_sector)
+	  /* TRANSLATORS: Filesystem may reserve the space just GRUB isn't sure about it.  */
+	  grub_util_error (_("%s appears to contain a %s filesystem which isn't known to "
+			     "reserve space for DOS-style boot.  Installing GRUB there could "
+			     "result in FILESYSTEM DESTRUCTION if valuable data is overwritten "
+			     "by grub-setup (--skip-fs-probe disables this "
+			     "check, use at your own risk)"), dest_dev->disk->name, fs->name);
+
+	if (ctx.dest_partmap && strcmp (ctx.dest_partmap->name, "msdos") != 0
+	    && strcmp (ctx.dest_partmap->name, "gpt") != 0
+	    && strcmp (ctx.dest_partmap->name, "bsd") != 0
+	    && strcmp (ctx.dest_partmap->name, "netbsd") != 0
+	    && strcmp (ctx.dest_partmap->name, "openbsd") != 0
+	    && strcmp (ctx.dest_partmap->name, "sunpc") != 0)
+	  /* TRANSLATORS: Partition map may reserve the space just GRUB isn't sure about it.  */
+	  grub_util_error (_("%s appears to contain a %s partition map which isn't known to "
+			     "reserve space for DOS-style boot.  Installing GRUB there could "
+			     "result in FILESYSTEM DESTRUCTION if valuable data is overwritten "
+			     "by grub-setup (--skip-fs-probe disables this "
+			     "check, use at your own risk)"), dest_dev->disk->name, ctx.dest_partmap->name);
+	if (is_ldm && ctx.dest_partmap && strcmp (ctx.dest_partmap->name, "msdos") != 0
+	    && strcmp (ctx.dest_partmap->name, "gpt") != 0)
+	  grub_util_error (_("%s appears to contain a %s partition map and "
+			     "LDM which isn't known to be a safe combination."
+			     "  Installing GRUB there could "
+			     "result in FILESYSTEM DESTRUCTION if valuable data"
+			     " is overwritten "
+			     "by grub-setup (--skip-fs-probe disables this "
+			     "check, use at your own risk)"),
+			   dest_dev->disk->name, ctx.dest_partmap->name);
+
+      }
+
+    if (! ctx.dest_partmap && ! fs && !is_ldm)
+      {
+	grub_util_warn ("%s", _("Attempting to install GRUB to a partitionless disk or to a partition.  This is a BAD idea."));
+	goto unable_to_embed;
+      }
+    if (ctx.multiple_partmaps || (ctx.dest_partmap && fs) || (is_ldm && fs))
+      {
+	grub_util_warn ("%s", _("Attempting to install GRUB to a disk with multiple partition labels.  This is not supported yet."));
+	goto unable_to_embed;
+      }
+
+    if (ctx.dest_partmap && !ctx.dest_partmap->embed)
+      {
+	grub_util_warn (_("Partition style `%s' doesn't support embedding"),
+			ctx.dest_partmap->name);
+	goto unable_to_embed;
+      }
+
+    if (fs && !fs->fs_embed)
+      {
+	grub_util_warn (_("File system `%s' doesn't support embedding"),
+			fs->name);
+	goto unable_to_embed;
+      }
+
+    nsec = core_sectors;
+
+    if (add_rs_codes)
+      maxsec = 2 * core_sectors;
+    else
+      maxsec = core_sectors;
+
+#ifdef GRUB_SETUP_BIOS
+    if (maxsec > ((0x78000 - GRUB_KERNEL_I386_PC_LINK_ADDR)
+		>> GRUB_DISK_SECTOR_BITS))
+      maxsec = ((0x78000 - GRUB_KERNEL_I386_PC_LINK_ADDR)
+		>> GRUB_DISK_SECTOR_BITS);
+#endif
+
+#ifdef GRUB_SETUP_SPARC64
+    /*
+     * On SPARC we need two extra. One is because we are combining the
+     * core.img with the boot.img. The other is because the boot sector
+     * starts at 1.
+     */
+    nsec += 2;
+    maxsec += 2;
+#endif
+
+    if (is_ldm)
+      err = grub_util_ldm_embed (dest_dev->disk, &nsec, maxsec,
+				 GRUB_EMBED_PCBIOS, &sectors);
+    else if (ctx.dest_partmap)
+      err = ctx.dest_partmap->embed (dest_dev->disk, &nsec, maxsec,
+				     GRUB_EMBED_PCBIOS, &sectors, warn_small);
+    else
+      err = fs->fs_embed (dest_dev, &nsec, maxsec,
+			  GRUB_EMBED_PCBIOS, &sectors);
+    if (!err && nsec < core_sectors)
+      {
+	err = grub_error (GRUB_ERR_OUT_OF_RANGE,
+			  N_("Your embedding area is unusually small.  "
+			     "core.img won't fit in it."));
+      }
+    
+    if (err)
+      {
+	grub_util_warn ("%s", grub_errmsg);
+	grub_errno = GRUB_ERR_NONE;
+	goto unable_to_embed;
+      }
+
+    assert (nsec <= maxsec);
+
+    /* Clean out the blocklists.  */
+    bl.block = bl.first_block;
+    while (bl.block->len)
+      {
+	grub_memset (bl.block, 0, sizeof (*bl.block));
+      
+	bl.block--;
+
+	if ((char *) bl.block <= core_img)
+	  grub_util_error ("%s", _("no terminator in the core image"));
+      }
+
+    bl.block = bl.first_block;
+    for (i = 0; i < nsec; i++)
+      save_blocklists (sectors[i] + grub_partition_get_start (ctx.container),
+		       0, GRUB_DISK_SECTOR_SIZE, &bl);
+
+    /* Make sure that the last blocklist is a terminator.  */
+    if (bl.block == bl.first_block)
+      bl.block--;
+    bl.block->start = 0;
+    bl.block->len = 0;
+#ifdef GRUB_SETUP_BIOS
+    bl.block->segment = 0;
+#endif
+
+#ifdef GRUB_SETUP_SPARC64
+    {
+      /*
+       * On SPARC, the block-list entries need to be based off the beginning
+       * of the parition, not the beginning of the disk.
+       */
+      struct grub_boot_blocklist *block;
+      block = bl.first_block;
+
+      while (block->len)
+        {
+          block->start -= bl.first_sector;
+          block--;
+        }
+    }
+
+    /*
+     * Reserve space for the boot block since it can not be in the
+     * Parition table on SPARC.
+     */
+    assert (bl.first_block->len > 2);
+    bl.first_block->start += 2;
+    bl.first_block->len -= 2;
+    write_rootdev (root_dev, boot_img, sectors[BOOT_SECTOR + 1] - bl.first_sector);
+#endif
+
+#ifdef GRUB_SETUP_BIOS
+    write_rootdev (root_dev, boot_img, bl.first_sector);
+#endif
+
+    /* Round up to the nearest sector boundary, and zero the extra memory */
+    core_img = xrealloc (core_img, nsec * GRUB_DISK_SECTOR_SIZE);
+    assert (core_img && (nsec * GRUB_DISK_SECTOR_SIZE >= core_size));
+    memset (core_img + core_size, 0, nsec * GRUB_DISK_SECTOR_SIZE - core_size);
+
+    bl.first_block = (struct grub_boot_blocklist *) (core_img
+						     + GRUB_DISK_SECTOR_SIZE
+						     - sizeof (*bl.block));
+#if GRUB_SETUP_BIOS
+    grub_size_t no_rs_length;
+    no_rs_length = grub_target_to_host16 
+      (grub_get_unaligned16 (core_img
+			     + GRUB_DISK_SECTOR_SIZE
+			     + GRUB_KERNEL_I386_PC_NO_REED_SOLOMON_LENGTH));
+
+    if (no_rs_length == 0xffff)
+      grub_util_error ("%s", _("core.img version mismatch"));
+
+    if (add_rs_codes)
+      {
+	grub_set_unaligned32 ((core_img + GRUB_DISK_SECTOR_SIZE
+			       + GRUB_KERNEL_I386_PC_REED_SOLOMON_REDUNDANCY),
+			      grub_host_to_target32 (nsec * GRUB_DISK_SECTOR_SIZE - core_size));
+
+	void *tmp = xmalloc (core_size);
+	grub_memcpy (tmp, core_img, core_size);
+	grub_reed_solomon_add_redundancy (core_img + no_rs_length + GRUB_DISK_SECTOR_SIZE,
+					  core_size - no_rs_length - GRUB_DISK_SECTOR_SIZE,
+					  nsec * GRUB_DISK_SECTOR_SIZE
+					  - core_size);
+	assert (grub_memcmp (tmp, core_img, core_size) == 0);
+	free (tmp);
+      }
+
+    /* Write the core image onto the disk.  */
+    for (i = 0; i < nsec; i++)
+      grub_disk_write (dest_dev->disk, sectors[i], 0,
+		       GRUB_DISK_SECTOR_SIZE,
+		       core_img + i * GRUB_DISK_SECTOR_SIZE);
+#endif
+
+#ifdef GRUB_SETUP_SPARC64
+    {
+      int isec = BOOT_SECTOR;
+
+      /* Write the boot image onto the disk. */
+      if (grub_disk_write (dest_dev->disk, sectors[isec++], 0,
+                           GRUB_DISK_SECTOR_SIZE, boot_img))
+        grub_util_error ("%s", grub_errmsg);
+
+      /* Write the core image onto the disk. */
+      for (i = 0 ; isec < nsec; i++, isec++)
+        {
+          if (grub_disk_write (dest_dev->disk, sectors[isec], 0,
+                               GRUB_DISK_SECTOR_SIZE,
+                               core_img  + i * GRUB_DISK_SECTOR_SIZE))
+            grub_util_error ("%s", grub_errmsg);
+        }
+    }
+
+#endif
+    grub_free (sectors);
+
+    goto finish;
+  }
+
+unable_to_embed:
+
+  if (dest_dev->disk->dev->id != root_dev->disk->dev->id)
+    grub_util_error ("%s", _("embedding is not possible, but this is required for "
+			     "RAID and LVM install"));
+
+  {
+    grub_fs_t fs;
+    fs = grub_fs_probe (root_dev);
+    if (!fs)
+      grub_util_error (_("can't determine filesystem on %s"), root);
+
+    if (!fs->blocklist_install)
+      grub_util_error (_("filesystem `%s' doesn't support blocklists"),
+		       fs->name);
+  }
+
+#ifdef GRUB_SETUP_BIOS
+  if (dest_dev->disk->id != root_dev->disk->id
+      || dest_dev->disk->dev->id != root_dev->disk->dev->id)
+    /* TRANSLATORS: cross-disk refers to /boot being on one disk
+       but MBR on another.  */
+    grub_util_error ("%s", _("embedding is not possible, but this is required for "
+			     "cross-disk install"));
+#else
+  core_dev = root_dev;
+#endif
+
+  grub_util_warn ("%s", _("Embedding is not possible.  GRUB can only be installed in this "
+			  "setup by using blocklists.  However, blocklists are UNRELIABLE and "
+			  "their use is discouraged."));
+  if (! force)
+    /* TRANSLATORS: Here GRUB refuses to continue with blocklist install.  */
+    grub_util_error ("%s", _("will not proceed with blocklists"));
+
+  /* The core image must be put on a filesystem unfortunately.  */
+  grub_util_info ("will leave the core image on the filesystem");
+
+  grub_util_biosdisk_flush (root_dev->disk);
+
+  /* Clean out the blocklists.  */
+  bl.block = bl.first_block;
+  while (bl.block->len)
+    {
+      bl.block->start = 0;
+      bl.block->len = 0;
+#ifdef GRUB_SETUP_BIOS
+      bl.block->segment = 0;
+#endif
+
+      bl.block--;
+
+      if ((char *) bl.block <= core_img)
+	grub_util_error ("%s", _("no terminator in the core image"));
+    }
+
+  bl.block = bl.first_block;
+
+#ifdef GRUB_SETUP_SPARC64
+  {
+    grub_partition_t container = root_dev->disk->partition;
+
+    if (grub_strstr (container->partmap->name, "gpt"))
+      bl.gpt_offset = grub_partition_get_start (container);
+  }
+#endif
+
+  grub_install_get_blocklist (root_dev, core_path, core_img, core_size,
+			      save_blocklists, &bl);
+
+  if (bl.first_sector == (grub_disk_addr_t)-1)
+    grub_util_error ("%s", _("can't retrieve blocklists"));
+
+#ifdef GRUB_SETUP_SPARC64
+  {
+    char *boot_devpath;
+    boot_devpath = (char *) (boot_img
+			     + GRUB_BOOT_AOUT_HEADER_SIZE
+			     + GRUB_BOOT_MACHINE_BOOT_DEVPATH);
+    if (dest_dev->disk->id != root_dev->disk->id
+	|| dest_dev->disk->dev->id != root_dev->disk->dev->id)
+      {
+	char *dest_ofpath;
+	dest_ofpath
+	  = grub_util_devname_to_ofpath (grub_util_biosdisk_get_osdev (root_dev->disk));
+	/* FIXME handle NULL result */
+	grub_util_info ("dest_ofpath is `%s'", dest_ofpath);
+	strncpy (boot_devpath, dest_ofpath,
+		 GRUB_BOOT_MACHINE_BOOT_DEVPATH_END
+		 - GRUB_BOOT_MACHINE_BOOT_DEVPATH - 1);
+	boot_devpath[GRUB_BOOT_MACHINE_BOOT_DEVPATH_END
+		   - GRUB_BOOT_MACHINE_BOOT_DEVPATH - 1] = 0;
+	free (dest_ofpath);
+      }
+    else
+      {
+	grub_util_info ("non cross-disk install");
+	memset (boot_devpath, 0, GRUB_BOOT_MACHINE_BOOT_DEVPATH_END
+		- GRUB_BOOT_MACHINE_BOOT_DEVPATH);
+      }
+    grub_util_info ("boot device path %s", boot_devpath);
+  }
+#endif
+
+  write_rootdev (root_dev, boot_img, bl.first_sector);
+
+  /* Write the first two sectors of the core image onto the disk.  */
+  grub_util_info ("opening the core image `%s'", core_path);
+  fp = grub_util_fd_open (core_path, GRUB_UTIL_FD_O_WRONLY);
+  if (! GRUB_UTIL_FD_IS_VALID (fp))
+    grub_util_error (_("cannot open `%s': %s"), core_path,
+		     grub_util_fd_strerror ());
+
+  if (grub_util_fd_write (fp, core_img, GRUB_DISK_SECTOR_SIZE * 2)
+      != GRUB_DISK_SECTOR_SIZE * 2)
+    grub_util_error (_("cannot write to `%s': %s"),
+		     core_path, strerror (errno));
+  if (grub_util_fd_sync (fp) < 0)
+    grub_util_error (_("cannot sync `%s': %s"), core_path, strerror (errno));
+  if (grub_util_fd_close (fp) < 0)
+    grub_util_error (_("cannot close `%s': %s"), core_path, strerror (errno));
+  grub_util_biosdisk_flush (root_dev->disk);
+
+  grub_disk_cache_invalidate_all ();
+
+  {
+    char *buf, *ptr = core_img;
+    size_t len = core_size;
+    grub_uint64_t blk, offset = 0;
+    grub_partition_t container = core_dev->disk->partition;
+    grub_err_t err;
+
+    core_dev->disk->partition = 0;
+#ifdef GRUB_SETUP_SPARC64
+    offset = bl.gpt_offset;
+#endif
+
+    buf = xmalloc (core_size);
+    blk = bl.first_sector;
+    err = grub_disk_read (core_dev->disk, blk + offset, 0, GRUB_DISK_SECTOR_SIZE, buf);
+    if (err)
+      grub_util_error (_("cannot read `%s': %s"), core_dev->disk->name,
+		       grub_errmsg);
+    if (grub_memcmp (buf, ptr, GRUB_DISK_SECTOR_SIZE) != 0)
+      grub_util_error ("%s", _("blocklists are invalid"));
+
+    ptr += GRUB_DISK_SECTOR_SIZE;
+    len -= GRUB_DISK_SECTOR_SIZE;
+
+    bl.block = bl.first_block;
+    while (bl.block->len)
+      {
+	size_t cur = grub_target_to_host16 (bl.block->len) << GRUB_DISK_SECTOR_BITS;
+	blk = grub_target_to_host64 (bl.block->start);
+
+	if (cur > len)
+	  cur = len;
+
+	err = grub_disk_read (core_dev->disk, blk + offset, 0, cur, buf);
+	if (err)
+	  grub_util_error (_("cannot read `%s': %s"), core_dev->disk->name,
+			   grub_errmsg);
+
+	if (grub_memcmp (buf, ptr, cur) != 0)
+	  grub_util_error ("%s", _("blocklists are invalid"));
+
+	ptr += cur;
+	len -= cur;
+	bl.block--;
+	
+	if ((char *) bl.block <= core_img)
+	  grub_util_error ("%s", _("no terminator in the core image"));
+      }
+    if (len)
+      grub_util_error ("%s", _("blocklists are incomplete"));
+    core_dev->disk->partition = container;
+    free (buf);
+  }
+
+#ifdef GRUB_SETUP_BIOS
+ finish:
+#endif
+
+  /* Write the boot image onto the disk.  */
+  if (grub_disk_write (dest_dev->disk, BOOT_SECTOR,
+		       0, GRUB_DISK_SECTOR_SIZE, boot_img))
+    grub_util_error ("%s", grub_errmsg);
+
+#ifdef GRUB_SETUP_SPARC64
+ finish:
+#endif
+
+  grub_util_biosdisk_flush (root_dev->disk);
+  grub_util_biosdisk_flush (dest_dev->disk);
+
+  free (core_path);
+  free (core_img);
+  free (boot_img);
+  grub_device_close (dest_dev);
+  grub_device_close (root_dev);
+}
+