2 * linux/include/linux/sunrpc/auth.h
4 * Declarations for the RPC client authentication machinery.
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 <linux/atomic.h>
19 #include <linux/rcupdate.h>
20 #include <linux/uidgid.h>
22 /* size of the nodename buffer */
23 #define UNX_MAXNODENAME 32
25 /* Work around the lack of a VFS credential */
29 struct group_info *group_info;
30 const char *principal;
31 unsigned char machine_cred : 1;
35 * Client user credentials
40 struct hlist_node cr_hash; /* hash chain */
41 struct list_head cr_lru; /* lru garbage collection */
42 struct rcu_head cr_rcu;
43 struct rpc_auth * cr_auth;
44 const struct rpc_credops *cr_ops;
46 unsigned long cr_magic; /* 0x0f4aa4f0 */
48 unsigned long cr_expire; /* when to gc */
49 unsigned long cr_flags; /* various flags */
50 atomic_t cr_count; /* ref count */
56 #define RPCAUTH_CRED_NEW 0
57 #define RPCAUTH_CRED_UPTODATE 1
58 #define RPCAUTH_CRED_HASHED 2
59 #define RPCAUTH_CRED_NEGATIVE 3
61 #define RPCAUTH_CRED_MAGIC 0x0f4aa4f0
64 * Client authentication handle
66 struct rpc_cred_cache;
69 unsigned int au_cslack; /* call cred size estimate */
70 /* guess at number of u32's auth adds before
71 * reply data; normally the verifier size: */
72 unsigned int au_rslack;
73 /* for gss, used to calculate au_rslack: */
74 unsigned int au_verfsize;
76 unsigned int au_flags; /* various flags */
77 const struct rpc_authops *au_ops; /* operations */
78 rpc_authflavor_t au_flavor; /* pseudoflavor (note may
79 * differ from the flavor in
80 * au_ops->au_flavor in gss
82 atomic_t au_count; /* Reference counter */
84 struct rpc_cred_cache * au_credcache;
88 /* Flags for rpcauth_lookupcred() */
89 #define RPCAUTH_LOOKUP_NEW 0x01 /* Accept an uninitialised cred */
92 * Client authentication ops
96 rpc_authflavor_t au_flavor; /* flavor (RPC_AUTH_*) */
98 struct rpc_auth * (*create)(struct rpc_clnt *, rpc_authflavor_t);
99 void (*destroy)(struct rpc_auth *);
101 struct rpc_cred * (*lookup_cred)(struct rpc_auth *, struct auth_cred *, int);
102 struct rpc_cred * (*crcreate)(struct rpc_auth*, struct auth_cred *, int);
103 int (*pipes_create)(struct rpc_auth *);
104 void (*pipes_destroy)(struct rpc_auth *);
105 int (*list_pseudoflavors)(rpc_authflavor_t *, int);
109 const char * cr_name; /* Name of the auth flavour */
110 int (*cr_init)(struct rpc_auth *, struct rpc_cred *);
111 void (*crdestroy)(struct rpc_cred *);
113 int (*crmatch)(struct auth_cred *, struct rpc_cred *, int);
114 struct rpc_cred * (*crbind)(struct rpc_task *, struct rpc_cred *, int);
115 __be32 * (*crmarshal)(struct rpc_task *, __be32 *);
116 int (*crrefresh)(struct rpc_task *);
117 __be32 * (*crvalidate)(struct rpc_task *, __be32 *);
118 int (*crwrap_req)(struct rpc_task *, kxdreproc_t,
119 void *, __be32 *, void *);
120 int (*crunwrap_resp)(struct rpc_task *, kxdrdproc_t,
121 void *, __be32 *, void *);
124 extern const struct rpc_authops authunix_ops;
125 extern const struct rpc_authops authnull_ops;
127 int __init rpc_init_authunix(void);
128 int __init rpc_init_generic_auth(void);
129 int __init rpcauth_init_module(void);
130 void rpcauth_remove_module(void);
131 void rpc_destroy_generic_auth(void);
132 void rpc_destroy_authunix(void);
134 struct rpc_cred * rpc_lookup_cred(void);
135 struct rpc_cred * rpc_lookup_machine_cred(const char *service_name);
136 int rpcauth_register(const struct rpc_authops *);
137 int rpcauth_unregister(const struct rpc_authops *);
138 struct rpc_auth * rpcauth_create(rpc_authflavor_t, struct rpc_clnt *);
139 void rpcauth_release(struct rpc_auth *);
140 int rpcauth_list_flavors(rpc_authflavor_t *, int);
141 struct rpc_cred * rpcauth_lookup_credcache(struct rpc_auth *, struct auth_cred *, int);
142 void rpcauth_init_cred(struct rpc_cred *, const struct auth_cred *, struct rpc_auth *, const struct rpc_credops *);
143 struct rpc_cred * rpcauth_lookupcred(struct rpc_auth *, int);
144 struct rpc_cred * rpcauth_generic_bind_cred(struct rpc_task *, struct rpc_cred *, int);
145 void put_rpccred(struct rpc_cred *);
146 __be32 * rpcauth_marshcred(struct rpc_task *, __be32 *);
147 __be32 * rpcauth_checkverf(struct rpc_task *, __be32 *);
148 int rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp, __be32 *data, void *obj);
149 int rpcauth_unwrap_resp(struct rpc_task *task, kxdrdproc_t decode, void *rqstp, __be32 *data, void *obj);
150 int rpcauth_refreshcred(struct rpc_task *);
151 void rpcauth_invalcred(struct rpc_task *);
152 int rpcauth_uptodatecred(struct rpc_task *);
153 int rpcauth_init_credcache(struct rpc_auth *);
154 void rpcauth_destroy_credcache(struct rpc_auth *);
155 void rpcauth_clear_credcache(struct rpc_cred_cache *);
158 struct rpc_cred * get_rpccred(struct rpc_cred *cred)
160 atomic_inc(&cred->cr_count);
164 #endif /* __KERNEL__ */
165 #endif /* _LINUX_SUNRPC_AUTH_H */