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Support BtrFS embedding.

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* grub-core/fs/btrfs.c (grub_btrfs_embed) [GRUB_UTIL]: New function.
	(grub_btrfs_fs) [GRUB_UTIL]: Set embed.
	* include/grub/fs.h (grub_fs) [GRUB_UTIL]: New field embed.
	* util/grub-setup.c (setup): Use fs embedding if available.
	Add additional sanity check.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-11-05 14:47:25 +01:00
parent 455377d93d
commit c7ba4f6984
4 changed files with 74 additions and 7 deletions
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30
grub-core/fs/btrfs.c
View file

@ -1596,6 +1596,35 @@ grub_btrfs_label (grub_device_t device, char **label)
return grub_errno;
}
#ifdef GRUB_UTIL
static grub_err_t
grub_btrfs_embed (grub_device_t device __attribute__ ((unused)),
unsigned int *nsectors,
grub_embed_type_t embed_type,
grub_disk_addr_t **sectors)
{
unsigned i;
if (embed_type != GRUB_EMBED_PCBIOS)
return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
"BtrFS curently supports only PC-BIOS embedding");
if (64 * 2 - 1 < *nsectors)
return grub_error (GRUB_ERR_OUT_OF_RANGE,
"Your core.img is unusually large. "
"It won't fit in the embedding area.");
*nsectors = 64 * 2 - 1;
*sectors = grub_malloc (*nsectors * sizeof (**sectors));
if (!*sectors)
return grub_errno;
for (i = 0; i < *nsectors; i++)
(*sectors)[i] = i + 1;
return GRUB_ERR_NONE;
}
#endif
static struct grub_fs grub_btrfs_fs = {
.name = "btrfs",
.dir = grub_btrfs_dir,
@ -1605,6 +1634,7 @@ static struct grub_fs grub_btrfs_fs = {
.uuid = grub_btrfs_uuid,
.label = grub_btrfs_label,
#ifdef GRUB_UTIL
.embed = grub_btrfs_embed,
.reserved_first_sector = 1,
#endif
};