diff options
| author | Steven Whitehouse <swhiteho@redhat.com> | 2008-10-10 11:54:46 +0100 |
|---|---|---|
| committer | Kay Sievers <kay.sievers@vrfy.org> | 2008-10-13 03:23:31 +0200 |
| commit | 2f664629829d8ed52a8bc55b31faf8ec8b65bd3c (patch) | |
| tree | 07ef693e05f89e2be396d7e3d55c3164e099d597 /extras/volume_id/lib | |
| parent | 9a997ecf4ed97becb9c546c5fad8490bcba44181 (diff) | |
volume_id: support for GFS2 UUIDs
Diffstat (limited to 'extras/volume_id/lib')
| -rw-r--r-- | extras/volume_id/lib/gfs.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/extras/volume_id/lib/gfs.c b/extras/volume_id/lib/gfs.c index 25f96f668b..d97730c7a4 100644 --- a/extras/volume_id/lib/gfs.c +++ b/extras/volume_id/lib/gfs.c @@ -76,9 +76,22 @@ struct gfs2_sb { char sb_lockproto[GFS_LOCKNAME_LEN]; char sb_locktable[GFS_LOCKNAME_LEN]; - /* In gfs1, quota and license dinodes followed */ + + struct gfs2_inum __pad3; /* Was quota inode in gfs1 */ + struct gfs2_inum __pad4; /* Was licence inode in gfs1 */ + uint8_t sb_uuid[16]; /* The UUID maybe 0 for backwards compat */ } PACKED; +static int uuid_non_zero(const uint8_t *p) +{ + int i; + for (i = 0; i < 16; i++) { + if (p[i] != 0) + return 1; + } + return 0; +} + static int volume_id_probe_gfs_generic(struct volume_id *id, uint64_t off, int vers) { struct gfs2_sb *sbd; @@ -113,6 +126,8 @@ static int volume_id_probe_gfs_generic(struct volume_id *id, uint64_t off, int v volume_id_set_label_raw(id, label, GFS_LOCKNAME_LEN); volume_id_set_label_string(id, label, GFS_LOCKNAME_LEN); } + if (vers == 2 && uuid_non_zero(sbd->sb_uuid)) + volume_id_set_uuid(id, sbd->sb_uuid, 0, UUID_DCE); strcpy(id->type_version, "1"); volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); return 0; |