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NFSv4: Remove requirement for machine creds for the "renew" operation

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In RFC3530, the RENEW operation is allowed to use either

 the same principal, RPC security flavour and (if RPCSEC_GSS), the same
  mechanism and service that was used for SETCLIENTID_CONFIRM

 OR

 Any principal, RPC security flavour and service combination that
 currently has an OPEN file on the server.

 Choose the latter since that doesn't require us to keep credentials for
 the same principal for the entire duration of the mount.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2006-01-03 09:55:25 +01:00
parent 58d9714a44
commit b4454fe1a7
4 changed files with 41 additions and 25 deletions
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7
fs/nfs/nfs4renewd.c
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@@ -62,6 +62,7 @@ void
nfs4_renew_state(void *data)
{
struct nfs4_client *clp = (struct nfs4_client *)data;
struct rpc_cred *cred;
long lease, timeout;
unsigned long last, now;
@@ -77,7 +78,8 @@ nfs4_renew_state(void *data)
timeout = (2 * lease) / 3 + (long)last - (long)now;
/* Are we close to a lease timeout? */
if (time_after(now, last + lease/3)) {
if (list_empty(&clp->cl_state_owners)) {
cred = nfs4_get_renew_cred(clp);
if (cred == NULL) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
spin_unlock(&clp->cl_lock);
nfs_expire_all_delegations(clp);
@@ -85,7 +87,8 @@ nfs4_renew_state(void *data)
}
spin_unlock(&clp->cl_lock);
/* Queue an asynchronous RENEW. */
nfs4_proc_async_renew(clp);
nfs4_proc_async_renew(clp, cred);
put_rpccred(cred);
timeout = (2 * lease) / 3;
spin_lock(&clp->cl_lock);
} else