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Add lost lvm/ prefix. Autoadd lvm subdevices.

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-04-22 02:46:36 +02:00
parent c0c837c10b
commit 65b4742cd7
3 changed files with 111 additions and 30 deletions
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120
grub-core/kern/emu/getroot.c
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@ -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 int
grub_util_is_lvm (const char *os_dev)
{
@ -648,40 +698,13 @@ grub_util_is_lvm (const char *os_dev)
#ifdef HAVE_DEVICE_MAPPER
{
struct dm_tree *tree;
uint32_t maj, min;
struct dm_tree_node *node = NULL;
const char *node_uuid;
struct stat st;
struct dm_tree *tree;
struct dm_tree_node *node;
if (stat (os_dev, &st) < 0)
if (!grub_util_open_dm (os_dev, &tree, &node))
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);
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);
return 0;
}
node_uuid = dm_tree_node_get_uuid (node);
if (! node_uuid)
{
@ -804,6 +827,43 @@ 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:
#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);
return;
}
#endif
default: /* GRUB_DEV_ABSTRACTION_NONE */
grub_util_biosdisk_get_grub_dev (os_dev);
return;
}
}
char *
grub_util_get_grub_dev (const char *os_dev)
{