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authorManoj Naik <manoj@almaden.ibm.com>2006-06-09 09:34:24 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-06-09 09:34:24 -0400
commit99baf625d3b9b8944920acc7c2d06079a37458c5 (patch)
tree2878013e4a44562502fe18ce4ecff0cd0dcaf4ec /fs/nfs/nfs4xdr.c
parent7aaa0b3bd4d215d9ce4d62b6c2043a63ba650f93 (diff)
NFSv4: Decode mounted_on_fileid attribute in getattr.
It is ignored if fileid is also requested. This will be used on referrals (fs_locations). Signed-off-by: Manoj Naik <manoj@almaden.ibm.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4xdr.c')
-rw-r--r--fs/nfs/nfs4xdr.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index f6a1ea7df374..4b6613f61341 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -2326,6 +2326,22 @@ static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t
return 0;
}
+static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
+{
+ uint32_t *p;
+
+ *fileid = 0;
+ if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
+ return -EIO;
+ if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
+ READ_BUF(8);
+ READ64(*fileid);
+ bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
+ }
+ dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
+ return 0;
+}
+
static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
{
uint32_t *p;
@@ -2983,6 +2999,7 @@ static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, cons
bitmap[2] = {0},
type;
int status, fmode = 0;
+ uint64_t fileid;
if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
goto xdr_error;
@@ -3032,6 +3049,10 @@ static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, cons
goto xdr_error;
if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
goto xdr_error;
+ if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
+ goto xdr_error;
+ if (fattr->fileid == 0 && fileid != 0)
+ fattr->fileid = fileid;
if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
xdr_error: