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authorMi Jinlong <mijinlong@cn.fujitsu.com>2011-10-20 17:51:39 +0800
committerJ. Bruce Fields <bfields@redhat.com>2011-10-24 04:24:30 -0400
commit345c284290cabb5484df909303e73d6def8ec8ec (patch)
tree1a853fe648230fefee758e36bd1ab141639c0b83 /fs/nfsd/nfs4state.c
parent92bac8c5d60623167c6802b1f125e6d623708185 (diff)
nfs41: implement DESTROY_CLIENTID operation
According to rfc5661 18.50, implement DESTROY_CLIENTID operation. Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs4state.c')
-rw-r--r--fs/nfsd/nfs4state.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 1527aaffb000..47e94e33a975 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1962,6 +1962,50 @@ out:
return status;
}
+static inline bool has_resources(struct nfs4_client *clp)
+{
+ return !list_empty(&clp->cl_openowners)
+ || !list_empty(&clp->cl_delegations)
+ || !list_empty(&clp->cl_sessions);
+}
+
+__be32
+nfsd4_destroy_clientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_destroy_clientid *dc)
+{
+ struct nfs4_client *conf, *unconf, *clp;
+ int status = 0;
+
+ nfs4_lock_state();
+ unconf = find_unconfirmed_client(&dc->clientid);
+ conf = find_confirmed_client(&dc->clientid);
+
+ if (conf) {
+ clp = conf;
+
+ if (!is_client_expired(conf) && has_resources(conf)) {
+ status = nfserr_clientid_busy;
+ goto out;
+ }
+
+ /* rfc5661 18.50.3 */
+ if (cstate->session && conf == cstate->session->se_client) {
+ status = nfserr_clientid_busy;
+ goto out;
+ }
+ } else if (unconf)
+ clp = unconf;
+ else {
+ status = nfserr_stale_clientid;
+ goto out;
+ }
+
+ expire_client(clp);
+out:
+ nfs4_unlock_state();
+ dprintk("%s return %d\n", __func__, ntohl(status));
+ return status;
+}
+
__be32
nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_reclaim_complete *rc)
{