auth.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:3k
- /*
- * linux/include/linux/auth.h
- *
- * Declarations for the RPC authentication machinery.
- *
- * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
- */
- #ifndef _LINUX_SUNRPC_AUTH_H
- #define _LINUX_SUNRPC_AUTH_H
- #ifdef __KERNEL__
- #include <linux/config.h>
- #include <linux/sunrpc/sched.h>
- #include <asm/atomic.h>
- /* size of the nodename buffer */
- #define UNX_MAXNODENAME 32
- /*
- * Client user credentials
- */
- struct rpc_cred {
- struct rpc_cred * cr_next; /* linked list */
- struct rpc_auth * cr_auth;
- struct rpc_credops * cr_ops;
- unsigned long cr_expire; /* when to gc */
- atomic_t cr_count; /* ref count */
- unsigned short cr_flags; /* various flags */
- #ifdef RPC_DEBUG
- unsigned long cr_magic; /* 0x0f4aa4f0 */
- #endif
- uid_t cr_uid;
- /* per-flavor data */
- };
- #define RPCAUTH_CRED_LOCKED 0x0001
- #define RPCAUTH_CRED_UPTODATE 0x0002
- #define RPCAUTH_CRED_DEAD 0x0004
- #define RPCAUTH_CRED_MAGIC 0x0f4aa4f0
- /*
- * Client authentication handle
- */
- #define RPC_CREDCACHE_NR 8
- #define RPC_CREDCACHE_MASK (RPC_CREDCACHE_NR - 1)
- struct rpc_auth {
- struct rpc_cred * au_credcache[RPC_CREDCACHE_NR];
- unsigned long au_expire; /* cache expiry interval */
- unsigned long au_nextgc; /* next garbage collection */
- unsigned int au_cslack; /* call cred size estimate */
- unsigned int au_rslack; /* reply verf size guess */
- unsigned int au_flags; /* various flags */
- struct rpc_authops * au_ops; /* operations */
- /* per-flavor data */
- };
- #define RPC_AUTH_PROC_CREDS 0x0010 /* process creds (including
- * uid/gid, fs[ug]id, gids)
- */
- /*
- * Client authentication ops
- */
- struct rpc_authops {
- unsigned int au_flavor; /* flavor (RPC_AUTH_*) */
- #ifdef RPC_DEBUG
- char * au_name;
- #endif
- struct rpc_auth * (*create)(struct rpc_clnt *);
- void (*destroy)(struct rpc_auth *);
- struct rpc_cred * (*crcreate)(int);
- };
- struct rpc_credops {
- void (*crdestroy)(struct rpc_cred *);
- int (*crmatch)(struct rpc_cred *, int);
- u32 * (*crmarshal)(struct rpc_task *, u32 *, int);
- int (*crrefresh)(struct rpc_task *);
- u32 * (*crvalidate)(struct rpc_task *, u32 *);
- };
- extern struct rpc_authops authunix_ops;
- extern struct rpc_authops authnull_ops;
- #ifdef CONFIG_SUNRPC_SECURE
- extern struct rpc_authops authdes_ops;
- #endif
- int rpcauth_register(struct rpc_authops *);
- int rpcauth_unregister(struct rpc_authops *);
- struct rpc_auth * rpcauth_create(unsigned int, struct rpc_clnt *);
- void rpcauth_destroy(struct rpc_auth *);
- struct rpc_cred * rpcauth_lookupcred(struct rpc_auth *, int);
- struct rpc_cred * rpcauth_bindcred(struct rpc_task *);
- void rpcauth_holdcred(struct rpc_task *);
- void put_rpccred(struct rpc_cred *);
- void rpcauth_unbindcred(struct rpc_task *);
- int rpcauth_matchcred(struct rpc_auth *,
- struct rpc_cred *, int);
- u32 * rpcauth_marshcred(struct rpc_task *, u32 *);
- u32 * rpcauth_checkverf(struct rpc_task *, u32 *);
- int rpcauth_refreshcred(struct rpc_task *);
- void rpcauth_invalcred(struct rpc_task *);
- int rpcauth_uptodatecred(struct rpc_task *);
- void rpcauth_init_credcache(struct rpc_auth *);
- void rpcauth_free_credcache(struct rpc_auth *);
- void rpcauth_insert_credcache(struct rpc_auth *,
- struct rpc_cred *);
- static inline
- struct rpc_cred * get_rpccred(struct rpc_cred *cred)
- {
- atomic_inc(&cred->cr_count);
- return cred;
- }
- #endif /* __KERNEL__ */
- #endif /* _LINUX_SUNRPC_AUTH_H */