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grub/util/setup.c
Eric Snowberg 927267be58 sparc64: Add bios boot partition support 
Add BIOS Boot Partition support for sparc64 platforms.  This will work a
little different than x86.  With GPT, both the OBP "load" and "boot" commands
are partition aware and neither command can see the partition table.  Therefore
the entire boot-loader is stored within the BIOS Boot Partition and nothing
is stored within the bootstrap code area of MBR.

To use it, the end user will issue the boot command with the path pointing to
the BIOS Boot Partition.

For example with the disk below:

Model: Unknown (unknown)
Disk /dev/nvme1n1: 1600GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name  Flags
1      1049kB  1075MB  1074MB   ext3
2      1075MB  1076MB  1049kB                     bios_grub
3      1076MB  1600GB  1599GB                     lvm

To boot grub2 from OBP, you would use:

boot /pci@302/pci@1/pci@0/pci@13/nvme@0/disk@1:b

Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2020-09-21 16:44:29 -04:00

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/* grub-setup.c - make GRUB usable */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011 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 */
{
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
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->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);
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;
#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;
bl.gpt_offset = 0;
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);
}
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