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| author | Christoph Hellwig <hch@sgi.com> | 2006-01-11 15:37:17 +1100 |
|---|---|---|
| committer | Nathan Scott <nathans@sgi.com> | 2006-01-11 15:37:17 +1100 |
| commit | 794fe2dc65f1ec4acacc388053bb52d32d3a932e (patch) | |
| tree | 3aecc571134961cdf78fa392b14d02ae84f7f1c4 | |
| parent | 60a204f096dd67683f3993798e14905ee9828ba5 (diff) | |
| download | linux-3.10-794fe2dc65f1ec4acacc388053bb52d32d3a932e.tar.gz linux-3.10-794fe2dc65f1ec4acacc388053bb52d32d3a932e.tar.bz2 linux-3.10-794fe2dc65f1ec4acacc388053bb52d32d3a932e.zip | |
[XFS] endianess annotations and tidying for the uuid code
SGI-PV: 943272
SGI-Modid: xfs-linux-melb:xfs-kern:203709a
Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
| -rw-r--r-- | fs/xfs/support/uuid.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/fs/xfs/support/uuid.c b/fs/xfs/support/uuid.c index 69ec4f540c3..a3d565a6773 100644 --- a/fs/xfs/support/uuid.c +++ b/fs/xfs/support/uuid.c @@ -27,6 +27,16 @@ uuid_init(void) mutex_init(&uuid_monitor); } + +/* IRIX interpretation of an uuid_t */ +typedef struct { + __be32 uu_timelow; + __be16 uu_timemid; + __be16 uu_timehi; + __be16 uu_clockseq; + __be16 uu_node[3]; +} xfs_uu_t; + /* * uuid_getnodeuniq - obtain the node unique fields of a UUID. * @@ -36,16 +46,11 @@ uuid_init(void) void uuid_getnodeuniq(uuid_t *uuid, int fsid [2]) { - char *uu = (char *)uuid; - - /* on IRIX, this function assumes big-endian fields within - * the uuid, so we use INT_GET to get the same result on - * little-endian systems - */ + xfs_uu_t *uup = (xfs_uu_t *)uuid; - fsid[0] = (INT_GET(*(u_int16_t*)(uu+8), ARCH_CONVERT) << 16) + - INT_GET(*(u_int16_t*)(uu+4), ARCH_CONVERT); - fsid[1] = INT_GET(*(u_int32_t*)(uu ), ARCH_CONVERT); + fsid[0] = (be16_to_cpu(uup->uu_clockseq) << 16) | + be16_to_cpu(uup->uu_timemid); + fsid[1] = be16_to_cpu(uup->uu_timelow); } void |