summaryrefslogtreecommitdiff
path: root/net/sunrpc/auth.c
diff options
context:
space:
mode:
authorNeilBrown <neilb@suse.com>2018-12-03 03:30:30 +0300
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2018-12-19 21:52:44 +0300
commit97f68c6b02e0225b38d327103c59cfe2ab5ecda7 (patch)
tree87d434407fef925b2d3fefad5dd759d33b9eb31a /net/sunrpc/auth.c
parentf06bc03339ad4c1baa964a5f0606247ac1c3c50b (diff)
downloadlinux-97f68c6b02e0225b38d327103c59cfe2ab5ecda7.tar.xz
SUNRPC: add 'struct cred *' to auth_cred and rpc_cred
The SUNRPC credential framework was put together before Linux has 'struct cred'. Now that we have it, it makes sense to use it. This first step just includes a suitable 'struct cred *' pointer in every 'struct auth_cred' and almost every 'struct rpc_cred'. The rpc_cred used for auth_null has a NULL 'struct cred *' as nothing else really makes sense. For rpc_cred, the pointer is reference counted. For auth_cred it isn't. struct auth_cred are either allocated on the stack, in which case the thread owns a reference to the auth, or are part of 'struct generic_cred' in which case gc_base owns the reference, and "acred" shares it. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/auth.c')
-rw-r--r--net/sunrpc/auth.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index ad8ead738981..a7e08e44f92b 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -659,6 +659,7 @@ rpcauth_lookupcred(struct rpc_auth *auth, int flags)
acred.uid = cred->fsuid;
acred.gid = cred->fsgid;
acred.group_info = cred->group_info;
+ acred.cred = cred;
ret = auth->au_ops->lookup_cred(auth, &acred, flags);
return ret;
}
@@ -674,6 +675,7 @@ rpcauth_init_cred(struct rpc_cred *cred, const struct auth_cred *acred,
cred->cr_auth = auth;
cred->cr_ops = ops;
cred->cr_expire = jiffies;
+ cred->cr_cred = get_cred(acred->cred);
cred->cr_uid = acred->uid;
}
EXPORT_SYMBOL_GPL(rpcauth_init_cred);
@@ -694,11 +696,15 @@ rpcauth_bind_root_cred(struct rpc_task *task, int lookupflags)
struct auth_cred acred = {
.uid = GLOBAL_ROOT_UID,
.gid = GLOBAL_ROOT_GID,
+ .cred = get_task_cred(&init_task),
};
+ struct rpc_cred *ret;
dprintk("RPC: %5u looking up %s cred\n",
task->tk_pid, task->tk_client->cl_auth->au_ops->au_name);
- return auth->au_ops->lookup_cred(auth, &acred, lookupflags);
+ ret = auth->au_ops->lookup_cred(auth, &acred, lookupflags);
+ put_cred(acred.cred);
+ return ret;
}
static struct rpc_cred *