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libfdisk: (gpt) support for disklabel dump 

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2013-09-03 17:36:04 +02:00
parent c0d20aae6f
commit 775001ad2b
1 changed files with 40 additions and 0 deletions
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40
libfdisk/src/gpt.c
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@ -768,6 +768,45 @@ invalid:
return NULL;
}
static int gpt_locate_disklabel(struct fdisk_context *cxt, int n,
const char **name, off_t *offset, size_t *size)
{
struct fdisk_gpt_label *gpt;
assert(cxt);
*name = NULL;
*offset = 0;
*size = 0;
switch (n) {
case 0:
*name = "PMBR";
*offset = 0;
*size = 512;
break;
case 1:
*name = _("GPT Header");
*offset = GPT_PRIMARY_PARTITION_TABLE_LBA * cxt->sector_size;
*size = sizeof(struct gpt_header);
break;
case 2:
*name = _("GPT Entries");
gpt = self_label(cxt);
*offset = le64_to_cpu(gpt->pheader->partition_entry_lba) * cxt->sector_size;
*size = le32_to_cpu(gpt->pheader->npartition_entries) *
le32_to_cpu(gpt->pheader->sizeof_partition_entry);
break;
default:
return 1; /* no more chunks */
}
return 0;
}
/*
* Returns the number of partitions that are in use.
*/
@ -2031,6 +2070,7 @@ static const struct fdisk_label_operations gpt_operations =
.verify = gpt_verify_disklabel,
.create = gpt_create_disklabel,
.list = gpt_list_disklabel,
.locate = gpt_locate_disklabel,
.get_id = gpt_get_disklabel_id,
.set_id = gpt_set_disklabel_id,