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merge lazy into luks

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-04-22 15:13:12 +02:00
commit 0aaa85f1a0
23 changed files with 542 additions and 193 deletions
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155
grub-core/kern/emu/getroot.c
View file

@ -640,6 +640,56 @@ grub_guess_root_device (const char *dir)
return os_dev;
}
#ifdef HAVE_DEVICE_MAPPER
static int
grub_util_open_dm (const char *os_dev, struct dm_tree **tree,
struct dm_tree_node **node)
{
uint32_t maj, min;
struct stat st;
*node = NULL;
*tree = NULL;
if ((strncmp ("/dev/mapper/", os_dev, 12) != 0))
return 0;
if (stat (os_dev, &st) < 0)
return 0;
*tree = dm_tree_create ();
if (! *tree)
{
grub_printf ("Failed to create tree\n");
grub_dprintf ("hostdisk", "dm_tree_create failed\n");
return 0;
}
maj = major (st.st_rdev);
min = minor (st.st_rdev);
if (! dm_tree_add_dev (*tree, maj, min))
{
grub_dprintf ("hostdisk", "dm_tree_add_dev failed\n");
dm_tree_free (*tree);
*tree = NULL;
return 0;
}
*node = dm_tree_find_node (*tree, maj, min);
if (! *node)
{
grub_dprintf ("hostdisk", "dm_tree_find_node failed\n");
dm_tree_free (*tree);
*tree = NULL;
return 0;
}
return 1;
}
#endif
static char *
get_dm_uuid (const char *os_dev)
{
@ -649,40 +699,13 @@ get_dm_uuid (const char *os_dev)
#ifdef HAVE_DEVICE_MAPPER
{
struct dm_tree *tree;
uint32_t maj, min;
struct dm_tree_node *node = NULL;
struct dm_tree_node *node;
const char *node_uuid;
char *ret;
struct stat st;
if (stat (os_dev, &st) < 0)
if (!grub_util_open_dm (os_dev, &tree, &node))
return NULL;
tree = dm_tree_create ();
if (! tree)
{
grub_printf ("Failed to create tree\n");
grub_dprintf ("hostdisk", "dm_tree_create failed\n");
return NULL;
}
maj = major (st.st_rdev);
min = minor (st.st_rdev);
if (! dm_tree_add_dev (tree, maj, min))
{
grub_dprintf ("hostdisk", "dm_tree_add_dev failed\n");
dm_tree_free (tree);
return NULL;
}
node = dm_tree_find_node (tree, maj, min);
if (! node)
{
grub_dprintf ("hostdisk", "dm_tree_find_node failed\n");
dm_tree_free (tree);
return NULL;
}
node_uuid = dm_tree_node_get_uuid (node);
if (! node_uuid)
{
@ -692,18 +715,22 @@ get_dm_uuid (const char *os_dev)
}
ret = grub_strdup (node_uuid);
dm_tree_free (tree);
return ret;
}
#else
#endif
return NULL;
#endif /* HAVE_DEVICE_MAPPER */
}
static enum grub_dev_abstraction_types
grub_util_get_dm_abstraction (const char *os_dev)
{
#ifdef HAVE_DEVICE_MAPPER
char *uuid;
uuid = get_dm_uuid (os_dev);
if (uuid == NULL)
@ -722,6 +749,11 @@ grub_util_get_dm_abstraction (const char *os_dev)
grub_free (uuid);
return GRUB_DEV_ABSTRACTION_NONE;
#else
if ((strncmp ("/dev/mapper/", os_dev, 12) != 0))
return GRUB_DEV_ABSTRACTION_NONE;
return GRUB_DEV_ABSTRACTION_LVM;
#endif
}
int
@ -830,11 +862,62 @@ out:
}
#endif /* __linux__ */
void
grub_util_pull_device (const char *os_dev)
{
switch (grub_util_get_dev_abstraction (os_dev))
{
case GRUB_DEV_ABSTRACTION_LVM:
case GRUB_DEV_ABSTRACTION_LUKS:
#ifdef HAVE_DEVICE_MAPPER
{
struct dm_tree *tree;
struct dm_tree_node *node;
struct dm_tree_node *child;
void *handle = NULL;
if (!grub_util_open_dm (os_dev, &tree, &node))
return;
while ((child = dm_tree_next_child (&handle, node, 0)))
{
const struct dm_info *dm = dm_tree_node_get_info (child);
char *subdev;
if (!dm)
continue;
subdev = grub_find_device ("/dev", makedev (dm->major, dm->minor));
if (subdev)
grub_util_pull_device (subdev);
}
dm_tree_free (tree);
}
#endif
return;
case GRUB_DEV_ABSTRACTION_RAID:
#ifdef __linux__
{
char **devicelist = grub_util_raid_getmembers (os_dev, 0);
int i;
for (i = 0; devicelist[i];i++)
grub_util_pull_device (devicelist[i]);
free (devicelist);
}
#endif
return;
default: /* GRUB_DEV_ABSTRACTION_NONE */
grub_util_biosdisk_get_grub_dev (os_dev);
return;
}
}
char *
grub_util_get_grub_dev (const char *os_dev)
{
char *grub_dev = NULL;
grub_util_pull_device (os_dev);
switch (grub_util_get_dev_abstraction (os_dev))
{
case GRUB_DEV_ABSTRACTION_LVM:
@ -844,14 +927,10 @@ grub_util_get_grub_dev (const char *os_dev)
grub_size_t offset = sizeof ("/dev/mapper/") - 1;
len = strlen (os_dev) - offset + 1;
grub_dev = xmalloc (len);
grub_dev = xmalloc (len + sizeof ("lvm/"));
for (i = 0; i < len; i++, offset++)
{
grub_dev[i] = os_dev[offset];
if (os_dev[offset] == '-' && os_dev[offset + 1] == '-')
offset++;
}
grub_memcpy (grub_dev, "lvm/", sizeof ("lvm/") - 1);
grub_memcpy (grub_dev + sizeof ("lvm/") - 1, os_dev + offset, len);
}
break;

6
grub-core/kern/emu/hostdisk.c
View file

@ -213,7 +213,8 @@ find_free_slot (void)
}
static int
grub_util_biosdisk_iterate (int (*hook) (const char *name))
grub_util_biosdisk_iterate (int (*hook) (const char *name),
grub_disk_pull_t pull)
{
unsigned i;
@ -225,7 +226,8 @@ grub_util_biosdisk_iterate (int (*hook) (const char *name))
}
static grub_err_t
grub_util_biosdisk_open (const char *name, grub_disk_t disk)
grub_util_biosdisk_open (const char *name, grub_disk_t disk,
grub_disk_pull_t pull __attribute__ ((unused)))
{
int drive;
struct stat st;

92
grub-core/kern/emu/raid.c Normal file
View file

@ -0,0 +1,92 @@
/* raid.c - RAID support for GRUB utils. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 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/>.
*/
/* We only support RAID on Linux. */
#ifdef __linux__
#include <grub/emu/misc.h>
#include <grub/util/misc.h>
#include <grub/emu/getroot.h>
#include <string.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <sys/types.h>
#include <linux/types.h>
#include <linux/major.h>
#include <linux/raid/md_p.h>
#include <linux/raid/md_u.h>
char **
grub_util_raid_getmembers (const char *name, int bootable)
{
int fd, ret, i, j;
char **devicelist;
mdu_version_t version;
mdu_array_info_t info;
mdu_disk_info_t disk;
fd = open (name, O_RDONLY);
if (fd == -1)
grub_util_error ("can't open %s: %s", name, strerror (errno));
ret = ioctl (fd, RAID_VERSION, &version);
if (ret != 0)
grub_util_error ("ioctl RAID_VERSION error: %s", strerror (errno));
if ((version.major != 0 || version.minor != 90)
&& (version.major != 1 || version.minor != 0)
&& (version.major != 1 || version.minor != 1)
&& (version.major != 1 || version.minor != 2))
grub_util_error ("unsupported RAID version: %d.%d",
version.major, version.minor);
if (bootable && (version.major != 0 || version.minor != 90))
grub_util_error ("unsupported RAID version: %d.%d",
version.major, version.minor);
ret = ioctl (fd, GET_ARRAY_INFO, &info);
if (ret != 0)
grub_util_error ("ioctl GET_ARRAY_INFO error: %s", strerror (errno));
devicelist = xmalloc ((info.nr_disks + 1) * sizeof (char *));
for (i = 0, j = 0; i <info.nr_disks; i++)
{
disk.number = i;
ret = ioctl (fd, GET_DISK_INFO, &disk);
if (ret != 0)
grub_util_error ("ioctl GET_DISK_INFO error: %s", strerror (errno));
if (disk.state & (1 << MD_DISK_ACTIVE))
{
devicelist[j] = grub_find_device (NULL,
makedev (disk.major, disk.minor));
j++;
}
}
devicelist[j] = NULL;
return devicelist;
}
#endif /* ! __linux__ */