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authorChristoph Hellwig <hch@sgi.com>2006-01-11 15:37:17 +1100
committerNathan Scott <nathans@sgi.com>2006-01-11 15:37:17 +1100
commit794fe2dc65f1ec4acacc388053bb52d32d3a932e (patch)
tree3aecc571134961cdf78fa392b14d02ae84f7f1c4 /fs/xfs/support/uuid.c
parent60a204f096dd67683f3993798e14905ee9828ba5 (diff)
[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>
Diffstat (limited to 'fs/xfs/support/uuid.c')
-rw-r--r--fs/xfs/support/uuid.c23
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