Add nfs4_state_protect - the function responsible for switching to the machine
credential and the correct rpcclnt when SP4_MACH_CRED is in use.
Signed-off-by: Weston Andros Adamson <dros@xxxxxxxxxx>
---
fs/nfs/nfs4_fs.h | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index ee81e35..3cf422f 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -273,6 +273,36 @@ is_ds_client(struct nfs_client *clp)
{
return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS;
}
+
+/*
+ * Function responsible for determining if an rpc_message should use the
+ * machine cred under SP4_MACH_CRED and if so switching the credential and
+ * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p).
+ */
+static inline void
+nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode,
+ struct rpc_clnt **clntp, struct rpc_message *msg)
+{
+ struct rpc_cred *newcred = NULL;
+ rpc_authflavor_t flavor;
+
+ if (test_bit(sp4_mode, &clp->cl_sp4_flags)) {
+ dfprintk(PROC, "NFS: using machine cred for operation %s\n",
+ msg->rpc_proc->p_name);
+ spin_lock(&clp->cl_lock);
+ if (clp->cl_machine_cred != NULL)
+ newcred = get_rpccred(clp->cl_machine_cred);
+ spin_unlock(&clp->cl_lock);
+ if (msg->rpc_cred)
+ put_rpccred(msg->rpc_cred);
+ msg->rpc_cred = newcred;
+
+ flavor = clp->cl_rpcclient->cl_auth->au_flavor;
+ WARN_ON(flavor != RPC_AUTH_GSS_KRB5I &&
+ flavor != RPC_AUTH_GSS_KRB5P);
+ *clntp = clp->cl_rpcclient;
+ }
+}
#else /* CONFIG_NFS_v4_1 */
static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server)
{
@@ -298,6 +328,12 @@ is_ds_client(struct nfs_client *clp)
{
return false;
}
+
+static inline void
+nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags,
+ struct rpc_clnt **clntp, struct rpc_message *msg)
+{
+}
#endif /* CONFIG_NFS_V4_1 */
extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[];
--
1.7.12.4 (Apple Git-37)
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