Signed-off-by: Trond Myklebust <[email protected]>
---
fs/nfs/nfs4state.c | 41 +++++++++++++++++++++++++++++++++++++----
1 files changed, 37 insertions(+), 4 deletions(-)
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 7775435..46eb624 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -71,6 +71,29 @@ static int nfs4_init_client(struct nfs_client *clp, struct rpc_cred *cred)
return status;
}
+static struct rpc_cred *nfs4_get_machine_cred(struct nfs_client *clp)
+{
+ struct rpc_cred *cred = NULL;
+
+ spin_lock(&clp->cl_lock);
+ if (clp->cl_machine_cred != NULL)
+ cred = get_rpccred(clp->cl_machine_cred);
+ spin_unlock(&clp->cl_lock);
+ return cred;
+}
+
+static void nfs4_clear_machine_cred(struct nfs_client *clp)
+{
+ struct rpc_cred *cred;
+
+ spin_lock(&clp->cl_lock);
+ cred = clp->cl_machine_cred;
+ clp->cl_machine_cred = NULL;
+ spin_unlock(&clp->cl_lock);
+ if (cred != NULL)
+ put_rpccred(cred);
+}
+
struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp)
{
struct nfs4_state_owner *sp;
@@ -91,13 +114,18 @@ static struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp)
{
struct nfs4_state_owner *sp;
struct rb_node *pos;
+ struct rpc_cred *cred;
+ cred = nfs4_get_machine_cred(clp);
+ if (cred != NULL)
+ goto out;
pos = rb_first(&clp->cl_state_owners);
if (pos != NULL) {
sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
- return get_rpccred(sp->so_cred);
+ cred = get_rpccred(sp->so_cred);
}
- return NULL;
+out:
+ return cred;
}
static void nfs_alloc_unique_id(struct rb_root *root, struct nfs_unique_id *new,
@@ -924,10 +952,10 @@ restart_loop:
if (cred != NULL) {
/* Yes there are: try to renew the old lease */
status = nfs4_proc_renew(clp, cred);
+ put_rpccred(cred);
switch (status) {
case 0:
case -NFS4ERR_CB_PATH_DOWN:
- put_rpccred(cred);
goto out;
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_LEASE_MOVED:
@@ -936,14 +964,19 @@ restart_loop:
} else {
/* "reboot" to ensure we clear all state on the server */
clp->cl_boot_time = CURRENT_TIME;
- cred = nfs4_get_setclientid_cred(clp);
}
/* We're going to have to re-establish a clientid */
nfs4_state_mark_reclaim(clp);
status = -ENOENT;
+ cred = nfs4_get_setclientid_cred(clp);
if (cred != NULL) {
status = nfs4_init_client(clp, cred);
put_rpccred(cred);
+ /* Handle case where the user hasn't set up machine creds */
+ if (status == -EACCES && cred == clp->cl_machine_cred) {
+ nfs4_clear_machine_cred(clp);
+ goto restart_loop;
+ }
}
if (status)
goto out_error;