nfsd41: CREATE_EXCLUSIVE4_1
Implement the CREATE_EXCLUSIVE4_1 open mode conforming to
http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26
This mode allows the client to atomically create a file
if it doesn't exist while setting some of its attributes.
It must be implemented if the server supports persistent
reply cache and/or pnfs.
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index ec3cd49..e3f0cbc 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -368,7 +368,13 @@
enum createmode4 {
NFS4_CREATE_UNCHECKED = 0,
NFS4_CREATE_GUARDED = 1,
- NFS4_CREATE_EXCLUSIVE = 2
+ NFS4_CREATE_EXCLUSIVE = 2,
+ /*
+ * New to NFSv4.1. If session is persistent,
+ * GUARDED4 MUST be used. Otherwise, use
+ * EXCLUSIVE4_1 instead of EXCLUSIVE4.
+ */
+ NFS4_CREATE_EXCLUSIVE4_1 = 3
};
enum limit_by4 {
diff --git a/include/linux/nfsd/xdr4.h b/include/linux/nfsd/xdr4.h
index c07d8fe..f80d601 100644
--- a/include/linux/nfsd/xdr4.h
+++ b/include/linux/nfsd/xdr4.h
@@ -219,10 +219,8 @@
u32 op_create; /* request */
u32 op_createmode; /* request */
u32 op_bmval[3]; /* request */
- union { /* request */
- struct iattr iattr; /* UNCHECKED4,GUARDED4 */
- nfs4_verifier verf; /* EXCLUSIVE4 */
- } u;
+ struct iattr iattr; /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
+ nfs4_verifier verf; /* EXCLUSIVE4 */
clientid_t op_clientid; /* request */
struct xdr_netobj op_owner; /* request */
u32 op_seqid; /* request */
@@ -236,8 +234,8 @@
struct nfs4_stateowner *op_stateowner; /* used during processing */
struct nfs4_acl *op_acl;
};
-#define op_iattr u.iattr
-#define op_verf u.verf
+#define op_iattr iattr
+#define op_verf verf
struct nfsd4_open_confirm {
stateid_t oc_req_stateid /* request */;