diff options
| author | Michael Olbrich <m.olbrich@pengutronix.de> | 2022-02-07 10:49:47 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2022-02-08 09:09:59 +0100 |
| commit | 62295dfdb43eb421b7c8b119994df12b4e4879ef (patch) | |
| tree | 017a33055811bc27bd1284f32cb45690d429034f /common | |
| parent | 240bf4f87471f4d15e97731fbe120f92ddd4ad16 (diff) | |
| download | barebox-62295dfdb43eb421b7c8b119994df12b4e4879ef.tar.gz barebox-62295dfdb43eb421b7c8b119994df12b4e4879ef.tar.xz | |
cdev: add diskuuid support
This allows identifying disks by UUID. For disks with GPT the disk GUID is
used. For DOS partition tables the NT signature ist used, similar to how
the partuuid is generated.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Link: https://lore.barebox.org/20220124100458.2924679-3-m.olbrich@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.barebox.org/20220207094953.949868-2-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common')
| -rw-r--r-- | common/partitions/dos.c | 3 | ||||
| -rw-r--r-- | common/partitions/efi.c | 2 |
2 files changed, 5 insertions, 0 deletions
diff --git a/common/partitions/dos.c b/common/partitions/dos.c index 597d7bf9bc..566c8dd949 100644 --- a/common/partitions/dos.c +++ b/common/partitions/dos.c @@ -182,6 +182,9 @@ static void dos_partition(void *buf, struct block_device *blk, struct disk_signature_priv *dsp; uint32_t signature = get_unaligned_le32(buf + 0x1b8); + if (signature) + sprintf(blk->cdev.uuid, "%08x", signature); + table = (struct partition_entry *)&buffer[446]; for (i = 0; i < 4; i++) { diff --git a/common/partitions/efi.c b/common/partitions/efi.c index 6d811bfb3b..0787b93f12 100644 --- a/common/partitions/efi.c +++ b/common/partitions/efi.c @@ -445,6 +445,8 @@ static void efi_partition(void *buf, struct block_device *blk, return; } + snprintf(blk->cdev.uuid, sizeof(blk->cdev.uuid), "%pUl", &gpt->disk_guid); + nb_part = le32_to_cpu(gpt->num_partition_entries); if (nb_part > MAX_PARTITION) { |