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authorChuck Lever <chuck.lever@oracle.com>2021-06-03 16:51:58 -0400
committerJ. Bruce Fields <bfields@redhat.com>2021-07-06 20:14:43 -0400
commitadf98a4850b9ede9fc174c78a885845fb08499a5 (patch)
treedcc5f8f056de34f110518ae48fcd77e0b70134de
parente26ec898b68b2ab64f379ba0fc0a615b2ad41f40 (diff)
downloadlinux-adf98a4850b9ede9fc174c78a885845fb08499a5.tar.bz2
lockd: Update the NLMv1 TEST results encoder to use struct xdr_stream
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
-rw-r--r--fs/lockd/xdr.c74
1 files changed, 35 insertions, 39 deletions
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index 840fa8ff8426..daf3524040d6 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -80,15 +80,6 @@ svcxdr_decode_fhandle(struct xdr_stream *xdr, struct nfs_fh *fh)
return true;
}
-/*
- * Encode and decode owner handle
- */
-static inline __be32 *
-nlm_encode_oh(__be32 *p, struct xdr_netobj *oh)
-{
- return xdr_encode_netobj(p, oh);
-}
-
static bool
svcxdr_decode_lock(struct xdr_stream *xdr, struct nlm_lock *lock)
{
@@ -121,39 +112,44 @@ svcxdr_decode_lock(struct xdr_stream *xdr, struct nlm_lock *lock)
return true;
}
-/*
- * Encode result of a TEST/TEST_MSG call
- */
-static __be32 *
-nlm_encode_testres(__be32 *p, struct nlm_res *resp)
+static bool
+svcxdr_encode_holder(struct xdr_stream *xdr, const struct nlm_lock *lock)
{
- s32 start, len;
-
- if (!(p = nlm_encode_cookie(p, &resp->cookie)))
- return NULL;
- *p++ = resp->status;
+ const struct file_lock *fl = &lock->fl;
+ s32 start, len;
- if (resp->status == nlm_lck_denied) {
- struct file_lock *fl = &resp->lock.fl;
-
- *p++ = (fl->fl_type == F_RDLCK)? xdr_zero : xdr_one;
- *p++ = htonl(resp->lock.svid);
-
- /* Encode owner handle. */
- if (!(p = xdr_encode_netobj(p, &resp->lock.oh)))
- return NULL;
+ /* exclusive */
+ if (xdr_stream_encode_bool(xdr, fl->fl_type != F_RDLCK) < 0)
+ return false;
+ if (xdr_stream_encode_u32(xdr, lock->svid) < 0)
+ return false;
+ if (!svcxdr_encode_owner(xdr, &lock->oh))
+ return false;
+ start = loff_t_to_s32(fl->fl_start);
+ if (fl->fl_end == OFFSET_MAX)
+ len = 0;
+ else
+ len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1);
+ if (xdr_stream_encode_u32(xdr, start) < 0)
+ return false;
+ if (xdr_stream_encode_u32(xdr, len) < 0)
+ return false;
- start = loff_t_to_s32(fl->fl_start);
- if (fl->fl_end == OFFSET_MAX)
- len = 0;
- else
- len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1);
+ return true;
+}
- *p++ = htonl(start);
- *p++ = htonl(len);
+static bool
+svcxdr_encode_testrply(struct xdr_stream *xdr, const struct nlm_res *resp)
+{
+ if (!svcxdr_encode_stats(xdr, resp->status))
+ return false;
+ switch (resp->status) {
+ case nlm_lck_denied:
+ if (!svcxdr_encode_holder(xdr, &resp->lock))
+ return false;
}
- return p;
+ return true;
}
@@ -345,11 +341,11 @@ nlmsvc_encode_void(struct svc_rqst *rqstp, __be32 *p)
int
nlmsvc_encode_testres(struct svc_rqst *rqstp, __be32 *p)
{
+ struct xdr_stream *xdr = &rqstp->rq_res_stream;
struct nlm_res *resp = rqstp->rq_resp;
- if (!(p = nlm_encode_testres(p, resp)))
- return 0;
- return xdr_ressize_check(rqstp, p);
+ return svcxdr_encode_cookie(xdr, &resp->cookie) &&
+ svcxdr_encode_testrply(xdr, resp);
}
int