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NFSv4: Reintroduce machine creds

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We need to try to ensure that we always use the same credentials whenever
we re-establish the clientid on the server. If not, the server won't
recognise that we're the same client, and so may not allow us to recover
state.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2008-04-07 20:50:11 -04:00
parent 78ea323be6
commit 7c67db3a8a
6 changed files with 47 additions and 3 deletions
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7
fs/nfs/client.c
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@ -112,6 +112,7 @@ struct nfs_client_initdata {
static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
{
struct nfs_client *clp;
struct rpc_cred *cred;
if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL)
goto error_0;
@ -150,6 +151,9 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
clp->cl_boot_time = CURRENT_TIME;
clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED;
#endif
cred = rpc_lookup_machine_cred();
if (!IS_ERR(cred))
clp->cl_machine_cred = cred;
return clp;
@ -191,6 +195,9 @@ static void nfs_free_client(struct nfs_client *clp)
if (__test_and_clear_bit(NFS_CS_CALLBACK, &clp->cl_res_state))
nfs_callback_down();
if (clp->cl_machine_cred != NULL)
put_rpccred(clp->cl_machine_cred);
kfree(clp->cl_hostname);
kfree(clp);