acpi: make __acpi_map_table() and __init function
[linux-2.6/mini2440.git] / net / sunrpc / auth_null.c
blob537d0e8589ddb598c9137eb97ccea1a870af04a6
1 /*
2 * linux/net/sunrpc/auth_null.c
4 * AUTH_NULL authentication. Really :-)
6 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
7 */
9 #include <linux/types.h>
10 #include <linux/module.h>
11 #include <linux/utsname.h>
12 #include <linux/sunrpc/clnt.h>
14 #ifdef RPC_DEBUG
15 # define RPCDBG_FACILITY RPCDBG_AUTH
16 #endif
18 static struct rpc_auth null_auth;
19 static struct rpc_cred null_cred;
21 static struct rpc_auth *
22 nul_create(struct rpc_clnt *clnt, rpc_authflavor_t flavor)
24 atomic_inc(&null_auth.au_count);
25 return &null_auth;
28 static void
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.
45 static void
46 nul_destroy_cred(struct rpc_cred *cred)
51 * Match cred handle against current process
53 static int
54 nul_match(struct auth_cred *acred, struct rpc_cred *cred, int taskflags)
56 return 1;
60 * Marshal credential.
62 static __be32 *
63 nul_marshal(struct rpc_task *task, __be32 *p)
65 *p++ = htonl(RPC_AUTH_NULL);
66 *p++ = 0;
67 *p++ = htonl(RPC_AUTH_NULL);
68 *p++ = 0;
70 return p;
74 * Refresh credential. This is a no-op for AUTH_NULL
76 static int
77 nul_refresh(struct rpc_task *task)
79 set_bit(RPCAUTH_CRED_UPTODATE, &task->tk_msg.rpc_cred->cr_flags);
80 return 0;
83 static __be32 *
84 nul_validate(struct rpc_task *task, __be32 *p)
86 rpc_authflavor_t flavor;
87 u32 size;
89 flavor = ntohl(*p++);
90 if (flavor != RPC_AUTH_NULL) {
91 printk("RPC: bad verf flavor: %u\n", flavor);
92 return NULL;
95 size = ntohl(*p++);
96 if (size != 0) {
97 printk("RPC: bad verf size: %u\n", size);
98 return NULL;
101 return p;
104 const struct rpc_authops authnull_ops = {
105 .owner = THIS_MODULE,
106 .au_flavor = RPC_AUTH_NULL,
107 #ifdef RPC_DEBUG
108 .au_name = "NULL",
109 #endif
110 .create = nul_create,
111 .destroy = nul_destroy,
112 .lookup_cred = nul_lookup_cred,
115 static
116 struct rpc_auth null_auth = {
117 .au_cslack = 4,
118 .au_rslack = 2,
119 .au_ops = &authnull_ops,
120 .au_flavor = RPC_AUTH_NULL,
121 .au_count = ATOMIC_INIT(0),
124 static
125 const struct rpc_credops null_credops = {
126 .cr_name = "AUTH_NULL",
127 .crdestroy = nul_destroy_cred,
128 .crmatch = nul_match,
129 .crmarshal = nul_marshal,
130 .crrefresh = nul_refresh,
131 .crvalidate = nul_validate,
134 static
135 struct rpc_cred null_cred = {
136 .cr_lru = LIST_HEAD_INIT(null_cred.cr_lru),
137 .cr_auth = &null_auth,
138 .cr_ops = &null_credops,
139 .cr_count = ATOMIC_INIT(1),
140 .cr_flags = 1UL << RPCAUTH_CRED_UPTODATE,
141 #ifdef RPC_DEBUG
142 .cr_magic = RPCAUTH_CRED_MAGIC,
143 #endif