nfsd: CLOSE SHOULD return the invalid special stateid for NFSv4.x (x>0)

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / fs / nfsd / nfs4state.c

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 11c67e8..d31b6cd 100644 (file)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -63,6 +63,9 @@ static const stateid_t zero_stateid = {
 static const stateid_t currentstateid = {
        .si_generation = 1,
 };
+static const stateid_t close_stateid = {
+       .si_generation = 0xffffffffU,
+};
 
 static u64 current_sessionid = 1;
 
@@ -5243,6 +5246,11 @@ nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
        nfsd4_close_open_stateid(stp);
        mutex_unlock(&stp->st_mutex);
 
+       /* See RFC5661 sectionm 18.2.4 */
+       if (stp->st_stid.sc_client->cl_minorversion)
+               memcpy(&close->cl_stateid, &close_stateid,
+                               sizeof(close->cl_stateid));
+
        /* put reference from nfs4_preprocess_seqid_op */
        nfs4_put_stid(&stp->st_stid);
 out: