2 * linux/include/linux/sunrpc/auth.h
4 * Declarations for the RPC client authentication machinery.
6 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
9 #ifndef _LINUX_SUNRPC_AUTH_H
10 #define _LINUX_SUNRPC_AUTH_H
14 #include <linux/sunrpc/sched.h>
15 #include <linux/sunrpc/msg_prot.h>
16 #include <linux/sunrpc/xdr.h>
18 #include <asm/atomic.h>
20 /* size of the nodename buffer */
21 #define UNX_MAXNODENAME 32
23 /* Work around the lack of a VFS credential */
27 struct group_info *group_info;
31 * Client user credentials
34 struct hlist_node cr_hash; /* hash chain */
35 struct rpc_credops * cr_ops;
36 unsigned long cr_expire; /* when to gc */
37 atomic_t cr_count; /* ref count */
38 unsigned short cr_flags; /* various flags */
40 unsigned long cr_magic; /* 0x0f4aa4f0 */
47 #define RPCAUTH_CRED_NEW 0x0001
48 #define RPCAUTH_CRED_UPTODATE 0x0002
50 #define RPCAUTH_CRED_MAGIC 0x0f4aa4f0
53 * Client authentication handle
55 #define RPC_CREDCACHE_NR 8
56 #define RPC_CREDCACHE_MASK (RPC_CREDCACHE_NR - 1)
57 struct rpc_cred_cache {
58 struct hlist_head hashtable[RPC_CREDCACHE_NR];
59 unsigned long nextgc; /* next garbage collection */
60 unsigned long expire; /* cache expiry interval */
64 unsigned int au_cslack; /* call cred size estimate */
65 /* guess at number of u32's auth adds before
66 * reply data; normally the verifier size: */
67 unsigned int au_rslack;
68 /* for gss, used to calculate au_rslack: */
69 unsigned int au_verfsize;
71 unsigned int au_flags; /* various flags */
72 struct rpc_authops * au_ops; /* operations */
73 rpc_authflavor_t au_flavor; /* pseudoflavor (note may
74 * differ from the flavor in
75 * au_ops->au_flavor in gss
77 atomic_t au_count; /* Reference counter */
79 struct rpc_cred_cache * au_credcache;
83 /* Flags for rpcauth_lookupcred() */
84 #define RPCAUTH_LOOKUP_NEW 0x01 /* Accept an uninitialised cred */
85 #define RPCAUTH_LOOKUP_ROOTCREDS 0x02 /* This really ought to go! */
88 * Client authentication ops
92 rpc_authflavor_t au_flavor; /* flavor (RPC_AUTH_*) */
96 struct rpc_auth * (*create)(struct rpc_clnt *, rpc_authflavor_t);
97 void (*destroy)(struct rpc_auth *);
99 struct rpc_cred * (*lookup_cred)(struct rpc_auth *, struct auth_cred *, int);
100 struct rpc_cred * (*crcreate)(struct rpc_auth*, struct auth_cred *, int);
104 const char * cr_name; /* Name of the auth flavour */
105 int (*cr_init)(struct rpc_auth *, struct rpc_cred *);
106 void (*crdestroy)(struct rpc_cred *);
108 int (*crmatch)(struct auth_cred *, struct rpc_cred *, int);
109 __be32 * (*crmarshal)(struct rpc_task *, __be32 *);
110 int (*crrefresh)(struct rpc_task *);
111 __be32 * (*crvalidate)(struct rpc_task *, __be32 *);
112 int (*crwrap_req)(struct rpc_task *, kxdrproc_t,
113 void *, __be32 *, void *);
114 int (*crunwrap_resp)(struct rpc_task *, kxdrproc_t,
115 void *, __be32 *, void *);
118 extern struct rpc_authops authunix_ops;
119 extern struct rpc_authops authnull_ops;
120 #ifdef CONFIG_SUNRPC_SECURE
121 extern struct rpc_authops authdes_ops;
124 int rpcauth_register(struct rpc_authops *);
125 int rpcauth_unregister(struct rpc_authops *);
126 struct rpc_auth * rpcauth_create(rpc_authflavor_t, struct rpc_clnt *);
127 void rpcauth_destroy(struct rpc_auth *);
128 struct rpc_cred * rpcauth_lookup_credcache(struct rpc_auth *, struct auth_cred *, int);
129 struct rpc_cred * rpcauth_lookupcred(struct rpc_auth *, int);
130 struct rpc_cred * rpcauth_bindcred(struct rpc_task *);
131 void rpcauth_holdcred(struct rpc_task *);
132 void put_rpccred(struct rpc_cred *);
133 void rpcauth_unbindcred(struct rpc_task *);
134 __be32 * rpcauth_marshcred(struct rpc_task *, __be32 *);
135 __be32 * rpcauth_checkverf(struct rpc_task *, __be32 *);
136 int rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp, __be32 *data, void *obj);
137 int rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, __be32 *data, void *obj);
138 int rpcauth_refreshcred(struct rpc_task *);
139 void rpcauth_invalcred(struct rpc_task *);
140 int rpcauth_uptodatecred(struct rpc_task *);
141 int rpcauth_init_credcache(struct rpc_auth *, unsigned long);
142 void rpcauth_free_credcache(struct rpc_auth *);
145 struct rpc_cred * get_rpccred(struct rpc_cred *cred)
147 atomic_inc(&cred->cr_count);
151 #endif /* __KERNEL__ */
152 #endif /* _LINUX_SUNRPC_AUTH_H */