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-rw-r--r--fs/nfsd/nfs4callback.c6
-rw-r--r--include/linux/sunrpc/clnt.h2
-rw-r--r--net/sunrpc/clnt.c16
3 files changed, 24 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 094747a1227..3ca14178214 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -384,6 +384,7 @@ static int do_probe_callback(void *data)
.version = nfs_cb_version[1]->number,
.authflavor = RPC_AUTH_UNIX, /* XXX: need AUTH_GSS... */
.flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
+ .client_name = clp->cl_principal,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
@@ -392,6 +393,11 @@ static int do_probe_callback(void *data)
struct rpc_clnt *client;
int status;
+ if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5)) {
+ status = nfserr_cb_path_down;
+ goto out_err;
+ }
+
/* Initialize address */
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 6f0ee1b84a4..c39a21040dc 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -58,6 +58,7 @@ struct rpc_clnt {
struct rpc_timeout cl_timeout_default;
struct rpc_program * cl_program;
char cl_inline_name[32];
+ char *cl_principal; /* target to authenticate to */
};
/*
@@ -108,6 +109,7 @@ struct rpc_create_args {
u32 version;
rpc_authflavor_t authflavor;
unsigned long flags;
+ char *client_name;
};
/* Values for "flags" field */
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 4895c341e46..347f2a25abb 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -197,6 +197,12 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
clnt->cl_rtt = &clnt->cl_rtt_default;
rpc_init_rtt(&clnt->cl_rtt_default, clnt->cl_timeout->to_initval);
+ clnt->cl_principal = NULL;
+ if (args->client_name) {
+ clnt->cl_principal = kstrdup(args->client_name, GFP_KERNEL);
+ if (!clnt->cl_principal)
+ goto out_no_principal;
+ }
kref_init(&clnt->cl_kref);
@@ -226,6 +232,8 @@ out_no_auth:
rpc_put_mount();
}
out_no_path:
+ kfree(clnt->cl_principal);
+out_no_principal:
rpc_free_iostats(clnt->cl_metrics);
out_no_stats:
if (clnt->cl_server != clnt->cl_inline_name)
@@ -354,6 +362,11 @@ rpc_clone_client(struct rpc_clnt *clnt)
new->cl_metrics = rpc_alloc_iostats(clnt);
if (new->cl_metrics == NULL)
goto out_no_stats;
+ if (clnt->cl_principal) {
+ new->cl_principal = kstrdup(clnt->cl_principal, GFP_KERNEL);
+ if (new->cl_principal == NULL)
+ goto out_no_principal;
+ }
kref_init(&new->cl_kref);
err = rpc_setup_pipedir(new, clnt->cl_program->pipe_dir_name);
if (err != 0)
@@ -366,6 +379,8 @@ rpc_clone_client(struct rpc_clnt *clnt)
rpciod_up();
return new;
out_no_path:
+ kfree(new->cl_principal);
+out_no_principal:
rpc_free_iostats(new->cl_metrics);
out_no_stats:
kfree(new);
@@ -417,6 +432,7 @@ rpc_free_client(struct kref *kref)
out_free:
rpc_unregister_client(clnt);
rpc_free_iostats(clnt->cl_metrics);
+ kfree(clnt->cl_principal);
clnt->cl_metrics = NULL;
xprt_put(clnt->cl_xprt);
rpciod_down();