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path: root/fs/nfs/nfs4state.c
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Diffstat (limited to 'fs/nfs/nfs4state.c')
-rw-r--r--fs/nfs/nfs4state.c49
1 files changed, 43 insertions, 6 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index b962397004c..46eb624e4f1 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,
@@ -292,8 +320,10 @@ struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server, struct
spin_unlock(&clp->cl_lock);
if (sp == new)
get_rpccred(cred);
- else
+ else {
+ rpc_destroy_wait_queue(&new->so_sequence.wait);
kfree(new);
+ }
return sp;
}
@@ -310,6 +340,7 @@ void nfs4_put_state_owner(struct nfs4_state_owner *sp)
return;
nfs4_remove_state_owner(clp, sp);
spin_unlock(&clp->cl_lock);
+ rpc_destroy_wait_queue(&sp->so_sequence.wait);
put_rpccred(cred);
kfree(sp);
}
@@ -529,6 +560,7 @@ static void nfs4_free_lock_state(struct nfs4_lock_state *lsp)
spin_lock(&clp->cl_lock);
nfs_free_unique_id(&clp->cl_lockowner_id, &lsp->ls_id);
spin_unlock(&clp->cl_lock);
+ rpc_destroy_wait_queue(&lsp->ls_sequence.wait);
kfree(lsp);
}
@@ -731,7 +763,7 @@ int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task)
list_add_tail(&seqid->list, &sequence->list);
if (list_first_entry(&sequence->list, struct nfs_seqid, list) == seqid)
goto unlock;
- rpc_sleep_on(&sequence->wait, task, NULL, NULL);
+ rpc_sleep_on(&sequence->wait, task, NULL);
status = -EAGAIN;
unlock:
spin_unlock(&sequence->lock);
@@ -920,10 +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:
@@ -932,14 +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;