From: Andy Adamson <andros@xxxxxxxxxx>
The gss-ctx key is used for gss_credential and gss_context management to
sync kernel gss_cred and gss_context lifetimes with Kerberos credential
lifetimes. It will be created upon kinit and destroyed upon kdestroy.
Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
---
net/sunrpc/auth_gss/auth_gss.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 0846566..ae42a83 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -52,6 +52,8 @@
#include <linux/sunrpc/gss_api.h>
#include <asm/uaccess.h>
#include <linux/hashtable.h>
+#include <linux/key-type.h>
+#include <keys/user-type.h>
#include "../netns.h"
@@ -113,6 +115,32 @@ static void gss_free_ctx(struct gss_cl_ctx *);
static const struct rpc_pipe_ops gss_upcall_ops_v0;
static const struct rpc_pipe_ops gss_upcall_ops_v1;
+static struct key_type key_type_gss_ctx = {
+ .name = "gss-ctx",
+ .instantiate = user_instantiate,
+ .match = user_match,
+ .revoke = user_revoke,
+ .destroy = user_destroy,
+ .describe = user_describe,
+ .read = user_read,
+};
+
+/* Register the gss-ctx key type for use by nfslogin and nfslogout */
+static int gss_register_ctx_keytype(void)
+{
+ int ret;
+
+ ret = register_key_type(&key_type_gss_ctx);
+ pr_notice("NFS: Registering the %s key type ret %d\n",
+ key_type_gss_ctx.name, ret);
+ return ret;
+}
+
+static void gss_unregister_ctx_keytype(void)
+{
+ unregister_key_type(&key_type_gss_ctx);
+}
+
static inline struct gss_cl_ctx *
gss_get_ctx(struct gss_cl_ctx *ctx)
{
@@ -1959,6 +1987,7 @@ static int __init init_rpcsec_gss(void)
if (err)
goto out_svc_exit;
rpc_init_wait_queue(&pipe_version_rpc_waitqueue, "gss pipe version");
+ gss_register_ctx_keytype();
return 0;
out_svc_exit:
gss_svc_shutdown();
@@ -1972,6 +2001,7 @@ static void __exit exit_rpcsec_gss(void)
{
unregister_pernet_subsys(&rpcsec_gss_net_ops);
gss_svc_shutdown();
+ gss_unregister_ctx_keytype();
rpcauth_unregister(&authgss_ops);
rcu_barrier(); /* Wait for completion of call_rcu()'s */
}
--
1.8.3.1
--
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