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grub/util/setup.c
Vladimir Serbinenko cb72aa1809 Rewrite blocklist functions in order to get progress when 
reading large extents and decrease amount of blocklist hook calls.
2013-11-01 23:28:03 +01:00

765 lines
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/* 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
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;
grub_util_info ("saving <%" PRIuGRUB_UINT64_T ",%u,%u>",
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
}
#ifdef GRUB_SETUP_BIOS
/* 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;
}
#endif
#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)
{
char *core_path;
char *boot_img, *core_img, *boot_path;
char *root = 0;
size_t boot_size, core_size;
#ifdef GRUB_SETUP_BIOS
grub_uint16_t core_sectors;
#endif
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
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);
#ifdef GRUB_SETUP_BIOS
core_sectors = ((core_size + GRUB_DISK_SECTOR_SIZE - 1)
>> GRUB_DISK_SECTOR_BITS);
#endif
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 ("root is `%s', dest is `%s'", root, dest);
grub_util_info ("Opening 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;
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)
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);
}
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;
}
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);
/* 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);
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->embed)
{
grub_util_warn (_("File system `%s' doesn't support embedding"),
fs->name);
goto unable_to_embed;
}
nsec = core_sectors;
maxsec = 2 * core_sectors;
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);
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);
else
err = 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;
bl.block->segment = 0;
write_rootdev (root_dev, boot_img, bl.first_sector);
core_img = realloc (core_img, nsec * GRUB_DISK_SECTOR_SIZE);
bl.first_block = (struct grub_boot_blocklist *) (core_img
+ GRUB_DISK_SECTOR_SIZE
- sizeof (*bl.block));
grub_size_t no_rs_length;
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));
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"));
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);
grub_free (sectors);
goto finish;
}
unable_to_embed:
#endif
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;
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)
{
const char *dest_ofpath;
dest_ofpath
= grub_util_devname_to_ofpath (grub_util_biosdisk_get_osdev (root_dev->disk));
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;
}
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));
grub_util_fd_sync (fp);
grub_util_fd_close (fp);
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;
grub_partition_t container = core_dev->disk->partition;
grub_err_t err;
core_dev->disk->partition = 0;
buf = xmalloc (core_size);
blk = bl.first_sector;
err = grub_disk_read (core_dev->disk, blk, 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, 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);
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);
}
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