From 86c3e16cc7aace4d1143952813b6cc2a80c51295 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Sat, 2 Oct 2010 17:04:00 -0400 Subject: [PATCH] nfsd4: confirm only on succesful create_session Following rfc 5661, section 18.36.4: "If the session is not successfully created, then no changes are made to any client records on the server." We shouldn't be confirming or incrementing the sequence id in this case. Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 6367c445d015..7e817d13cd82 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1487,6 +1487,7 @@ nfsd4_create_session(struct svc_rqst *rqstp, struct nfs4_client *conf, *unconf; struct nfsd4_session *new; struct nfsd4_clid_slot *cs_slot = NULL; + bool confirm_me = false; int status = 0; nfs4_lock_state(); @@ -1509,7 +1510,6 @@ nfsd4_create_session(struct svc_rqst *rqstp, cs_slot->sl_seqid, cr_ses->seqid); goto out; } - cs_slot->sl_seqid++; } else if (unconf) { if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred) || !rpc_cmp_addr(sa, (struct sockaddr *) &unconf->cl_addr)) { @@ -1525,8 +1525,7 @@ nfsd4_create_session(struct svc_rqst *rqstp, goto out; } - cs_slot->sl_seqid++; /* from 0 to 1 */ - move_to_confirmed(unconf); + confirm_me = true; conf = unconf; } else { status = nfserr_stale_clientid; @@ -1546,10 +1545,13 @@ nfsd4_create_session(struct svc_rqst *rqstp, status = nfs_ok; memcpy(cr_ses->sessionid.data, new->se_sessionid.data, NFS4_MAX_SESSIONID_LEN); + cs_slot->sl_seqid++; cr_ses->seqid = cs_slot->sl_seqid; /* cache solo and embedded create sessions under the state lock */ nfsd4_cache_create_session(cr_ses, cs_slot, status); + if (confirm_me) + move_to_confirmed(conf); out: nfs4_unlock_state(); dprintk("%s returns %d\n", __func__, ntohl(status));