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grub/util/i386/pc/grub-setup.c
robertmh 6cf12cbd25 2008-05-06 Robert Millan <rmh@aybabtu.com> 
* util/grub-fstest.c (grub_refresh): Call `fflush (stdout)'.  This
        ensures that output lines aren't intermangled with those sent to
        stderr (via grub_util_info()).
        * util/grub-probe.c (grub_refresh): Likewise.
        * util/i386/pc/grub-setup.c (grub_refresh): Likewise.
2008-05-06 13:00:57 +00:00

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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 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/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/pc_partition.h>
#include <grub/gpt_partition.h>
#include <grub/env.h>
#include <grub/util/biosdisk.h>
#include <grub/machine/boot.h>
#include <grub/machine/kernel.h>
#include <grub/term.h>
#include <grub/util/raid.h>
#include <grub/util/lvm.h>
static const grub_gpt_part_type_t grub_gpt_partition_type_bios_boot = GRUB_GPT_PARTITION_TYPE_BIOS_BOOT;
#include <grub_setup_init.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <grub/util/getroot.h>
#define _GNU_SOURCE 1
#include <getopt.h>
#define DEFAULT_BOOT_FILE "boot.img"
#define DEFAULT_CORE_FILE "core.img"
/* This is the blocklist used in the diskboot image. */
struct boot_blocklist
{
grub_uint64_t start;
grub_uint16_t len;
grub_uint16_t segment;
} __attribute__ ((packed));
void
grub_putchar (int c)
{
putchar (c);
}
int
grub_getkey (void)
{
return -1;
}
grub_term_t
grub_term_get_current (void)
{
return 0;
}
void
grub_refresh (void)
{
fflush (stdout);
}
static void
setup (const char *prefix, const char *dir,
const char *boot_file, const char *core_file,
const char *root, const char *dest, int must_embed)
{
char *boot_path, *core_path;
char *boot_img, *core_img;
size_t boot_size, core_size;
grub_uint16_t core_sectors;
grub_device_t root_dev, dest_dev;
grub_uint8_t *boot_drive, *root_drive;
grub_disk_addr_t *kernel_sector;
grub_uint16_t *boot_drive_check;
struct boot_blocklist *first_block, *block;
grub_int32_t *install_dos_part, *install_bsd_part;
char *install_prefix;
char *tmp_img;
int i;
grub_disk_addr_t first_sector;
grub_uint16_t current_segment
= GRUB_BOOT_MACHINE_KERNEL_SEG + (GRUB_DISK_SECTOR_SIZE >> 4);
grub_uint16_t last_length = GRUB_DISK_SECTOR_SIZE;
grub_file_t file;
FILE *fp;
struct { grub_uint64_t start; grub_uint64_t end; } embed_region;
embed_region.start = embed_region.end = ~0UL;
int able_to_embed = 1;
auto void NESTED_FUNC_ATTR save_first_sector (grub_disk_addr_t sector, unsigned offset,
unsigned length);
auto void NESTED_FUNC_ATTR save_blocklists (grub_disk_addr_t sector, unsigned offset,
unsigned length);
auto int find_usable_region (grub_disk_t disk,
const grub_partition_t p);
int find_usable_region (grub_disk_t disk __attribute__ ((unused)),
const grub_partition_t p)
{
if (! strcmp (p->partmap->name, "pc_partition_map"))
{
struct grub_pc_partition *pcdata = p->data;
/* There's always an embed region, and it starts right after the MBR. */
embed_region.start = 1;
/* For its end offset, include as many dummy partitions as we can. */
if (! grub_pc_partition_is_empty (pcdata->dos_type)
&& ! grub_pc_partition_is_bsd (pcdata->dos_type)
&& embed_region.end > p->start)
embed_region.end = p->start;
}
else
{
struct grub_gpt_partentry *gptdata = p->data;
/* If there's an embed region, it is in a dedicated partition. */
if (! memcmp (&gptdata->type, &grub_gpt_partition_type_bios_boot, 16))
{
embed_region.start = p->start;
embed_region.end = p->start + p->len;
return 1;
}
}
return 0;
}
void NESTED_FUNC_ATTR save_first_sector (grub_disk_addr_t sector, unsigned offset,
unsigned length)
{
grub_util_info ("the first sector is <%llu,%u,%u>",
sector, offset, length);
if (offset != 0 || length != GRUB_DISK_SECTOR_SIZE)
grub_util_error ("The first sector of the core file is not sector-aligned");
first_sector = sector;
}
void NESTED_FUNC_ATTR save_blocklists (grub_disk_addr_t sector, unsigned offset,
unsigned length)
{
struct boot_blocklist *prev = block + 1;
grub_util_info ("saving <%llu,%u,%u> with the segment 0x%x",
sector, offset, length, (unsigned) current_segment);
if (offset != 0 || last_length != GRUB_DISK_SECTOR_SIZE)
grub_util_error ("Non-sector-aligned data is found in the core file");
if (block != first_block
&& (grub_le_to_cpu64 (prev->start)
+ grub_le_to_cpu16 (prev->len)) == sector)
prev->len = grub_cpu_to_le16 (grub_le_to_cpu16 (prev->len) + 1);
else
{
block->start = grub_cpu_to_le64 (sector);
block->len = grub_cpu_to_le16 (1);
block->segment = grub_cpu_to_le16 (current_segment);
block--;
if (block->len)
grub_util_error ("The sectors of the core file are too fragmented");
}
last_length = length;
current_segment += GRUB_DISK_SECTOR_SIZE >> 4;
}
/* 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 %d",
boot_path, GRUB_DISK_SECTOR_SIZE);
boot_img = grub_util_read_image (boot_path);
free (boot_path);
/* Set the addresses of variables in the boot image. */
boot_drive = (grub_uint8_t *) (boot_img + GRUB_BOOT_MACHINE_BOOT_DRIVE);
root_drive = (grub_uint8_t *) (boot_img + GRUB_BOOT_MACHINE_ROOT_DRIVE);
kernel_sector = (grub_disk_addr_t *) (boot_img
+ GRUB_BOOT_MACHINE_KERNEL_SECTOR);
boot_drive_check = (grub_uint16_t *) (boot_img
+ GRUB_BOOT_MACHINE_DRIVE_CHECK);
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);
else if (core_size > 0xFFFF * GRUB_DISK_SECTOR_SIZE)
grub_util_error ("The size of `%s' is too large", core_path);
core_img = grub_util_read_image (core_path);
free (core_path);
/* Have FIRST_BLOCK to point to the first blocklist. */
first_block = (struct boot_blocklist *) (core_img
+ GRUB_DISK_SECTOR_SIZE
- sizeof (*block));
install_dos_part = (grub_int32_t *) (core_img + GRUB_DISK_SECTOR_SIZE
+ GRUB_KERNEL_MACHINE_INSTALL_DOS_PART);
install_bsd_part = (grub_int32_t *) (core_img + GRUB_DISK_SECTOR_SIZE
+ GRUB_KERNEL_MACHINE_INSTALL_BSD_PART);
install_prefix = (core_img + GRUB_DISK_SECTOR_SIZE
+ GRUB_KERNEL_MACHINE_PREFIX);
/* Open the root device and the destination device. */
root_dev = grub_device_open (root);
if (! root_dev)
grub_util_error ("%s", grub_errmsg);
dest_dev = grub_device_open (dest);
if (! dest_dev)
grub_util_error ("%s", grub_errmsg);
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);
/* 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);
/* 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);
/* Copy the possible partition table. */
if (dest_dev->disk->has_partitions)
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 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 (dest_dev->disk->id & 0x80)
/* Replace the jmp (2 bytes) with double nop's. */
*boot_drive_check = 0x9090;
/* If the destination device can have partitions and it is the MBR,
try to embed the core image into after the MBR. */
if (dest_dev->disk->has_partitions && ! dest_dev->disk->partition)
{
grub_partition_iterate (dest_dev->disk, find_usable_region);
/* If there is enough space... */
if ((unsigned long) core_sectors <= embed_region.end - embed_region.start)
{
grub_util_info ("will embed the core image at sector 0x%llx", embed_region.start);
/* The first blocklist contains the whole sectors. */
first_block->start = grub_cpu_to_le64 (embed_region.start + 1);
first_block->len = grub_cpu_to_le16 (core_sectors - 1);
first_block->segment
= grub_cpu_to_le16 (GRUB_BOOT_MACHINE_KERNEL_SEG
+ (GRUB_DISK_SECTOR_SIZE >> 4));
/* Make sure that the second blocklist is a terminator. */
block = first_block - 1;
block->start = 0;
block->len = 0;
block->segment = 0;
/* Embed information about the installed location. */
if (must_embed)
*install_dos_part = *install_bsd_part = grub_cpu_to_le32 (-2);
else if (root_dev->disk->partition)
{
if (strcmp (root_dev->disk->partition->partmap->name,
"pc_partition_map") == 0)
{
struct grub_pc_partition *pcdata =
root_dev->disk->partition->data;
*install_dos_part
= grub_cpu_to_le32 (pcdata->dos_part);
*install_bsd_part
= grub_cpu_to_le32 (pcdata->bsd_part);
}
else if (strcmp (root_dev->disk->partition->partmap->name,
"gpt_partition_map") == 0)
{
*install_dos_part = grub_cpu_to_le32 (root_dev->disk->partition->index);
*install_bsd_part = grub_cpu_to_le32 (-1);
}
else
grub_util_error ("No PC style partitions found");
}
else
*install_dos_part = *install_bsd_part = grub_cpu_to_le32 (-1);
grub_util_info ("dos partition is %d, bsd partition is %d, prefix is %s",
grub_le_to_cpu32 (*install_dos_part),
grub_le_to_cpu32 (*install_bsd_part),
prefix);
strcpy (install_prefix, prefix);
/* Write the core image onto the disk. */
if (grub_disk_write (dest_dev->disk, embed_region.start, 0, core_size, core_img))
grub_util_error ("%s", grub_errmsg);
/* The boot image and the core image are on the same drive,
so there is no need to specify the boot drive explicitly. */
*boot_drive = 0xff;
*kernel_sector = grub_cpu_to_le64 (embed_region.start);
/* If the root device is different from the destination device,
it is necessary to embed the root drive explicitly. */
if (root_dev->disk->id != dest_dev->disk->id)
*root_drive = (grub_uint8_t) root_dev->disk->id;
else
*root_drive = 0xFF;
/* Write the boot image onto the disk. */
if (grub_disk_write (dest_dev->disk, 0, 0, GRUB_DISK_SECTOR_SIZE,
boot_img))
grub_util_error ("%s", grub_errmsg);
goto finish;
}
else
able_to_embed = 0;
}
else
able_to_embed = 0;
if (must_embed && ! able_to_embed)
grub_util_error ("Can't embed the core image, but this is required when\n"
"the root device is on a RAID array or LVM volume.");
/* The core image must be put on a filesystem unfortunately. */
grub_util_info ("will leave the core image on the filesystem");
/* Make sure that GRUB reads the identical image as the OS. */
tmp_img = xmalloc (core_size);
core_path = grub_util_get_path (prefix, core_file);
/* It is a Good Thing to sync two times. */
sync ();
sync ();
#define MAX_TRIES 5
for (i = 0; i < MAX_TRIES; i++)
{
grub_util_info ("attempting to read the core image `%s' from GRUB%s",
core_path, (i == 0) ? "" : " again");
grub_disk_cache_invalidate_all ();
file = grub_file_open (core_path);
if (file)
{
if (grub_file_size (file) != core_size)
grub_util_info ("succeeded in opening the core image but the size is different (%d != %d)",
(int) grub_file_size (file), (int) core_size);
else if (grub_file_read (file, tmp_img, core_size)
!= (grub_ssize_t) core_size)
grub_util_info ("succeeded in opening the core image but cannot read %d bytes",
(int) core_size);
else if (memcmp (core_img, tmp_img, core_size) != 0)
{
#if 0
FILE *dump;
FILE *dump2;
dump = fopen ("dump.img", "wb");
if (dump)
{
fwrite (tmp_img, 1, core_size, dump);
fclose (dump);
}
dump2 = fopen ("dump2.img", "wb");
if (dump2)
{
fwrite (core_img, 1, core_size, dump2);
fclose (dump2);
}
#endif
grub_util_info ("succeeded in opening the core image but the data is different");
}
else
{
grub_file_close (file);
break;
}
grub_file_close (file);
}
else
grub_util_info ("couldn't open the core image");
if (grub_errno)
grub_util_info ("error message = %s", grub_errmsg);
grub_errno = GRUB_ERR_NONE;
sync ();
sleep (1);
}
if (i == MAX_TRIES)
grub_util_error ("Cannot read `%s' correctly", core_path);
/* Clean out the blocklists. */
block = first_block;
while (block->len)
{
block->start = 0;
block->len = 0;
block->segment = 0;
block--;
if ((char *) block <= core_img)
grub_util_error ("No terminator in the core image");
}
/* Now read the core image to determine where the sectors are. */
file = grub_file_open (core_path);
if (! file)
grub_util_error ("%s", grub_errmsg);
file->read_hook = save_first_sector;
if (grub_file_read (file, tmp_img, GRUB_DISK_SECTOR_SIZE)
!= GRUB_DISK_SECTOR_SIZE)
grub_util_error ("Failed to read the first sector of the core image");
block = first_block;
file->read_hook = save_blocklists;
if (grub_file_read (file, tmp_img, core_size - GRUB_DISK_SECTOR_SIZE)
!= (grub_ssize_t) core_size - GRUB_DISK_SECTOR_SIZE)
grub_util_error ("Failed to read the rest sectors of the core image");
grub_file_close (file);
free (core_path);
free (tmp_img);
*kernel_sector = grub_cpu_to_le64 (first_sector);
/* If the destination device is different from the root device,
it is necessary to embed the boot drive explicitly. */
if (root_dev->disk->id != dest_dev->disk->id)
*boot_drive = (grub_uint8_t) root_dev->disk->id;
else
*boot_drive = 0xFF;
/* When the core image is not embedded, the root device always follows
the boot device. */
*root_drive = 0xFF;
/* Embed information about the installed location. */
if (root_dev->disk->partition)
{
struct grub_pc_partition *pcdata =
root_dev->disk->partition->data;
if (strcmp (root_dev->disk->partition->partmap->name,
"pc_partition_map") == 0)
{
*install_dos_part
= grub_cpu_to_le32 (pcdata->dos_part);
*install_bsd_part
= grub_cpu_to_le32 (pcdata->bsd_part);
}
else if (strcmp (root_dev->disk->partition->partmap->name,
"gpt_partition_map") == 0)
{
*install_dos_part = grub_cpu_to_le32 (root_dev->disk->partition->index);
*install_bsd_part = grub_cpu_to_le32 (-1);
}
else
grub_util_error ("No PC style partitions found");
}
else
*install_dos_part = *install_bsd_part = grub_cpu_to_le32 (-1);
grub_util_info ("dos partition is %d, bsd partition is %d, prefix is %s",
grub_le_to_cpu32 (*install_dos_part),
grub_le_to_cpu32 (*install_bsd_part),
prefix);
strcpy (install_prefix, prefix);
/* Write the first two sectors of the core image onto the disk. */
core_path = grub_util_get_path (dir, core_file);
grub_util_info ("opening the core image `%s'", core_path);
fp = fopen (core_path, "r+b");
if (! fp)
grub_util_error ("Cannot open `%s'", core_path);
grub_util_write_image (core_img, GRUB_DISK_SECTOR_SIZE * 2, fp);
fclose (fp);
free (core_path);
/* Write the boot image onto the disk. */
if (grub_disk_write (dest_dev->disk, 0, 0, GRUB_DISK_SECTOR_SIZE, boot_img))
grub_util_error ("%s", grub_errmsg);
finish:
/* Sync is a Good Thing. */
sync ();
free (core_img);
free (boot_img);
grub_device_close (dest_dev);
grub_device_close (root_dev);
}
static struct option options[] =
{
{"boot-image", required_argument, 0, 'b'},
{"core-image", required_argument, 0, 'c'},
{"directory", required_argument, 0, 'd'},
{"device-map", required_argument, 0, 'm'},
{"root-device", required_argument, 0, 'r'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"verbose", no_argument, 0, 'v'},
{0, 0, 0, 0}
};
static void
usage (int status)
{
if (status)
fprintf (stderr, "Try ``grub-setup --help'' for more information.\n");
else
printf ("\
Usage: grub-setup [OPTION]... DEVICE\n\
\n\
Set up images to boot from DEVICE.\n\
DEVICE must be a GRUB device (e.g. ``(hd0,1)'').\n\
\n\
-b, --boot-image=FILE use FILE as the boot image [default=%s]\n\
-c, --core-image=FILE use FILE as the core image [default=%s]\n\
-d, --directory=DIR use GRUB files in the directory DIR [default=%s]\n\
-m, --device-map=FILE use FILE as the device map [default=%s]\n\
-r, --root-device=DEV use DEV as the root device [default=guessed]\n\
-h, --help display this message and exit\n\
-V, --version print version information and exit\n\
-v, --verbose print verbose messages\n\
\n\
Report bugs to <%s>.\n\
",
DEFAULT_BOOT_FILE, DEFAULT_CORE_FILE, DEFAULT_DIRECTORY,
DEFAULT_DEVICE_MAP, PACKAGE_BUGREPORT);
exit (status);
}
static char *
get_device_name (char *dev)
{
size_t len = strlen (dev);
if (dev[0] != '(' || dev[len - 1] != ')')
return 0;
dev[len - 1] = '\0';
return dev + 1;
}
int
main (int argc, char *argv[])
{
char *boot_file = 0;
char *core_file = 0;
char *dir = 0;
char *dev_map = 0;
char *root_dev = 0;
char *prefix;
char *dest_dev;
int must_embed = 0;
progname = "grub-setup";
/* Check for options. */
while (1)
{
int c = getopt_long (argc, argv, "b:c:d:m:r:hVv", options, 0);
if (c == -1)
break;
else
switch (c)
{
case 'b':
if (boot_file)
free (boot_file);
boot_file = xstrdup (optarg);
break;
case 'c':
if (core_file)
free (core_file);
core_file = xstrdup (optarg);
break;
case 'd':
if (dir)
free (dir);
dir = xstrdup (optarg);
break;
case 'm':
if (dev_map)
free (dev_map);
dev_map = xstrdup (optarg);
break;
case 'r':
if (root_dev)
free (root_dev);
root_dev = xstrdup (optarg);
break;
case 'h':
usage (0);
break;
case 'V':
printf ("grub-setup (%s) %s\n", PACKAGE_NAME, PACKAGE_VERSION);
return 0;
case 'v':
verbosity++;
break;
default:
usage (1);
break;
}
}
if (verbosity > 1)
grub_env_set ("debug", "all");
/* Obtain DEST_DEV. */
if (optind >= argc)
{
fprintf (stderr, "No device is specified.\n");
usage (1);
}
if (optind + 1 != argc)
{
fprintf (stderr, "Unknown extra argument `%s'.\n", argv[optind + 1]);
usage (1);
}
/* Initialize the emulated biosdisk driver. */
grub_util_biosdisk_init (dev_map ? : DEFAULT_DEVICE_MAP);
/* Initialize all modules. */
grub_init_all ();
dest_dev = get_device_name (argv[optind]);
if (! dest_dev)
{
/* Possibly, the user specified an OS device file. */
dest_dev = grub_util_get_grub_dev (argv[optind]);
if (! dest_dev)
{
fprintf (stderr, "Invalid device `%s'.\n", argv[optind]);
usage (1);
}
}
else
/* For simplicity. */
dest_dev = xstrdup (dest_dev);
prefix = grub_get_prefix (dir ? : DEFAULT_DIRECTORY);
if (root_dev)
{
char *tmp = get_device_name (root_dev);
if (! tmp)
grub_util_error ("Invalid root device `%s'", root_dev);
tmp = xstrdup (tmp);
free (root_dev);
root_dev = tmp;
}
else
{
root_dev = grub_util_get_grub_dev (grub_guess_root_device (dir ? : DEFAULT_DIRECTORY));
if (! root_dev)
{
grub_util_info ("guessing the root device failed, because of `%s'",
grub_errmsg);
grub_util_error ("Cannot guess the root device. Specify the option ``--root-device''.");
}
}
#ifdef __linux__
if (grub_util_lvm_isvolume (root_dev))
{
char *newprefix;
must_embed = 1;
newprefix = xmalloc (1 + strlen (root_dev) + 1 + strlen (prefix) + 1);
sprintf (newprefix, "(%s)%s", root_dev, prefix);
free (prefix);
prefix = newprefix;
}
if (dest_dev[0] == 'm' && dest_dev[1] == 'd'
&& dest_dev[2] >= '0' && dest_dev[2] <= '9')
{
char **devicelist;
char *raid_prefix;
int i;
raid_prefix = xmalloc (1 + strlen (dest_dev) + 1 + strlen (prefix) + 1);
sprintf (raid_prefix, "(%s)%s", dest_dev, prefix);
devicelist = grub_util_raid_getmembers (dest_dev);
for (i = 0; devicelist[i]; i++)
{
setup (raid_prefix,
dir ? : DEFAULT_DIRECTORY,
boot_file ? : DEFAULT_BOOT_FILE,
core_file ? : DEFAULT_CORE_FILE,
root_dev, grub_util_get_grub_dev (devicelist[i]), 1);
}
free (raid_prefix);
}
else
#endif
/* Do the real work. */
setup (prefix,
dir ? : DEFAULT_DIRECTORY,
boot_file ? : DEFAULT_BOOT_FILE,
core_file ? : DEFAULT_CORE_FILE,
root_dev, dest_dev, must_embed);
/* Free resources. */
grub_fini_all ();
grub_util_biosdisk_fini ();
free (boot_file);
free (core_file);
free (dir);
free (dev_map);
free (root_dev);
free (prefix);
free (dest_dev);
return 0;
}
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