nfsd41: CREATE_EXCLUSIVE4_1

[safe/jmp/linux-2.6] / fs / nfsd / nfs4proc.c

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index e206053..b2883e9 100644 (file)
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -93,6 +93,21 @@ do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_o
        open->op_truncate = 0;
 
        if (open->op_create) {
+               /* FIXME: check session persistence and pnfs flags.
+                * The nfsv4.1 spec requires the following semantics:
+                *
+                * Persistent   | pNFS   | Server REQUIRED | Client Allowed
+                * Reply Cache  | server |                 |
+                * -------------+--------+-----------------+--------------------
+                * no           | no     | EXCLUSIVE4_1    | EXCLUSIVE4_1
+                *              |        |                 | (SHOULD)
+                *              |        | and EXCLUSIVE4  | or EXCLUSIVE4
+                *              |        |                 | (SHOULD NOT)
+                * no           | yes    | EXCLUSIVE4_1    | EXCLUSIVE4_1
+                * yes          | no     | GUARDED4        | GUARDED4
+                * yes          | yes    | GUARDED4        | GUARDED4
+                */
+
                /*
                 * Note: create modes (UNCHECKED,GUARDED...) are the same
                 * in NFSv4 as in v3.