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1 // SPDX-License-Identifier: GPL-2.0
3 * linux/net/sunrpc/auth_null.c
5 * AUTH_NULL authentication. Really :-)
7 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
10 #include <linux/types.h>
11 #include <linux/module.h>
12 #include <linux/sunrpc/clnt.h>
14 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
15 # define RPCDBG_FACILITY RPCDBG_AUTH
18 static struct rpc_auth null_auth
;
19 static struct rpc_cred null_cred
;
21 static struct rpc_auth
*
22 nul_create(const struct rpc_auth_create_args
*args
, struct rpc_clnt
*clnt
)
24 refcount_inc(&null_auth
.au_count
);
29 nul_destroy(struct rpc_auth
*auth
)
34 * Lookup NULL creds for current process
36 static struct rpc_cred
*
37 nul_lookup_cred(struct rpc_auth
*auth
, struct auth_cred
*acred
, int flags
)
39 return get_rpccred(&null_cred
);
43 * Destroy cred handle.
46 nul_destroy_cred(struct rpc_cred
*cred
)
51 * Match cred handle against current process
54 nul_match(struct auth_cred
*acred
, struct rpc_cred
*cred
, int taskflags
)
63 nul_marshal(struct rpc_task
*task
, __be32
*p
)
65 *p
++ = htonl(RPC_AUTH_NULL
);
67 *p
++ = htonl(RPC_AUTH_NULL
);
74 * Refresh credential. This is a no-op for AUTH_NULL
77 nul_refresh(struct rpc_task
*task
)
79 set_bit(RPCAUTH_CRED_UPTODATE
, &task
->tk_rqstp
->rq_cred
->cr_flags
);
84 nul_validate(struct rpc_task
*task
, __be32
*p
)
86 rpc_authflavor_t flavor
;
90 if (flavor
!= RPC_AUTH_NULL
) {
91 printk("RPC: bad verf flavor: %u\n", flavor
);
97 printk("RPC: bad verf size: %u\n", size
);
104 const struct rpc_authops authnull_ops
= {
105 .owner
= THIS_MODULE
,
106 .au_flavor
= RPC_AUTH_NULL
,
108 .create
= nul_create
,
109 .destroy
= nul_destroy
,
110 .lookup_cred
= nul_lookup_cred
,
114 struct rpc_auth null_auth
= {
115 .au_cslack
= NUL_CALLSLACK
,
116 .au_rslack
= NUL_REPLYSLACK
,
117 .au_ops
= &authnull_ops
,
118 .au_flavor
= RPC_AUTH_NULL
,
119 .au_count
= REFCOUNT_INIT(1),
123 const struct rpc_credops null_credops
= {
124 .cr_name
= "AUTH_NULL",
125 .crdestroy
= nul_destroy_cred
,
126 .crmatch
= nul_match
,
127 .crmarshal
= nul_marshal
,
128 .crrefresh
= nul_refresh
,
129 .crvalidate
= nul_validate
,
133 struct rpc_cred null_cred
= {
134 .cr_lru
= LIST_HEAD_INIT(null_cred
.cr_lru
),
135 .cr_auth
= &null_auth
,
136 .cr_ops
= &null_credops
,
137 .cr_count
= REFCOUNT_INIT(2),
138 .cr_flags
= 1UL << RPCAUTH_CRED_UPTODATE
,