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authorBenny Halevy <bhalevy@panasas.com>2010-05-25 09:50:23 +0300
committerJ. Bruce Fields <bfields@citi.umich.edu>2010-06-22 17:19:51 -0400
commit9303bbd3de3b25061de11e4d8c891fa9592fad8c (patch)
tree515880cffa7e9805b95d2e19bd22c0c8c0adbf73 /fs/nfsd
parent4731030d58a146630f5e8a0519661a5344a60f45 (diff)
nfsd: nfs4callback encode_stateid helper function
To be used also for the pnfs cb_layoutrecall callback Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd4: fix cb_recall encoding] "nfsd: nfs4callback encode_stateid helper function" forgot to reserve more space after return from the new helper. Reported-by: Michael Groshans <groshans@citi.umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4callback.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index c8dd03c3f0fd..874a56a0801c 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -203,6 +203,16 @@ nfs_cb_stat_to_errno(int stat)
*/
static void
+encode_stateid(struct xdr_stream *xdr, stateid_t *sid)
+{
+ __be32 *p;
+
+ RESERVE_SPACE(sizeof(stateid_t));
+ WRITE32(sid->si_generation);
+ WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
+}
+
+static void
encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr)
{
__be32 * p;
@@ -227,10 +237,10 @@ encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp,
__be32 *p;
int len = dp->dl_fh.fh_size;
- RESERVE_SPACE(12+sizeof(dp->dl_stateid) + len);
+ RESERVE_SPACE(4);
WRITE32(OP_CB_RECALL);
- WRITE32(dp->dl_stateid.si_generation);
- WRITEMEM(&dp->dl_stateid.si_opaque, sizeof(stateid_opaque_t));
+ encode_stateid(xdr, &dp->dl_stateid);
+ RESERVE_SPACE(8 + (XDR_QUADLEN(len) << 2));
WRITE32(0); /* truncate optimization not implemented */
WRITE32(len);
WRITEMEM(&dp->dl_fh.fh_base, len);