diff options
Diffstat (limited to 'include/linux/sunrpc/auth.h')
| -rw-r--r-- | include/linux/sunrpc/auth.h | 68 |
1 files changed, 13 insertions, 55 deletions
diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h index d9af474a857d..eed3cb16ccf1 100644 --- a/include/linux/sunrpc/auth.h +++ b/include/linux/sunrpc/auth.h @@ -37,21 +37,9 @@ struct rpcsec_gss_info; -/* auth_cred ac_flags bits */ -enum { - RPC_CRED_KEY_EXPIRE_SOON = 1, /* underlying cred key will expire soon */ - RPC_CRED_NOTIFY_TIMEOUT = 2, /* nofity generic cred when underlying - key will expire soon */ -}; - -/* Work around the lack of a VFS credential */ struct auth_cred { - kuid_t uid; - kgid_t gid; - struct group_info *group_info; - const char *principal; - unsigned long ac_flags; - unsigned char machine_cred : 1; + const struct cred *cred; + const char *principal; /* If present, this is a machine credential */ }; /* @@ -67,9 +55,8 @@ struct rpc_cred { const struct rpc_credops *cr_ops; unsigned long cr_expire; /* when to gc */ unsigned long cr_flags; /* various flags */ - atomic_t cr_count; /* ref count */ - - kuid_t cr_uid; + refcount_t cr_count; /* ref count */ + const struct cred *cr_cred; /* per-flavor data */ }; @@ -78,8 +65,7 @@ struct rpc_cred { #define RPCAUTH_CRED_HASHED 2 #define RPCAUTH_CRED_NEGATIVE 3 -/* rpc_auth au_flags */ -#define RPCAUTH_AUTH_NO_CRKEY_TIMEOUT 0x0001 /* underlying cred has no key timeout */ +const struct cred *rpc_machine_cred(void); /* * Client authentication handle @@ -100,7 +86,7 @@ struct rpc_auth { * differ from the flavor in * au_ops->au_flavor in gss * case) */ - atomic_t au_count; /* Reference counter */ + refcount_t au_count; /* Reference counter */ struct rpc_cred_cache * au_credcache; /* per-flavor data */ @@ -116,7 +102,6 @@ struct rpc_auth_create_args { /* Flags for rpcauth_lookupcred() */ #define RPCAUTH_LOOKUP_NEW 0x01 /* Accept an uninitialised cred */ -#define RPCAUTH_LOOKUP_RCU 0x02 /* lock-less lookup */ /* * Client authentication ops @@ -125,7 +110,8 @@ struct rpc_authops { struct module *owner; rpc_authflavor_t au_flavor; /* flavor (RPC_AUTH_*) */ char * au_name; - struct rpc_auth * (*create)(struct rpc_auth_create_args *, struct rpc_clnt *); + struct rpc_auth * (*create)(const struct rpc_auth_create_args *, + struct rpc_clnt *); void (*destroy)(struct rpc_auth *); int (*hash_cred)(struct auth_cred *, unsigned int); @@ -145,7 +131,6 @@ struct rpc_credops { void (*crdestroy)(struct rpc_cred *); int (*crmatch)(struct auth_cred *, struct rpc_cred *, int); - struct rpc_cred * (*crbind)(struct rpc_task *, struct rpc_cred *, int); __be32 * (*crmarshal)(struct rpc_task *, __be32 *); int (*crrefresh)(struct rpc_task *); __be32 * (*crvalidate)(struct rpc_task *, __be32 *); @@ -154,27 +139,21 @@ struct rpc_credops { int (*crunwrap_resp)(struct rpc_task *, kxdrdproc_t, void *, __be32 *, void *); int (*crkey_timeout)(struct rpc_cred *); - bool (*crkey_to_expire)(struct rpc_cred *); char * (*crstringify_acceptor)(struct rpc_cred *); + bool (*crneed_reencode)(struct rpc_task *); }; extern const struct rpc_authops authunix_ops; extern const struct rpc_authops authnull_ops; int __init rpc_init_authunix(void); -int __init rpc_init_generic_auth(void); int __init rpcauth_init_module(void); void rpcauth_remove_module(void); -void rpc_destroy_generic_auth(void); void rpc_destroy_authunix(void); -struct rpc_cred * rpc_lookup_cred(void); -struct rpc_cred * rpc_lookup_cred_nonblock(void); -struct rpc_cred * rpc_lookup_generic_cred(struct auth_cred *, int, gfp_t); -struct rpc_cred * rpc_lookup_machine_cred(const char *service_name); int rpcauth_register(const struct rpc_authops *); int rpcauth_unregister(const struct rpc_authops *); -struct rpc_auth * rpcauth_create(struct rpc_auth_create_args *, +struct rpc_auth * rpcauth_create(const struct rpc_auth_create_args *, struct rpc_clnt *); void rpcauth_release(struct rpc_auth *); rpc_authflavor_t rpcauth_get_pseudoflavor(rpc_authflavor_t, @@ -185,45 +164,24 @@ int rpcauth_list_flavors(rpc_authflavor_t *, int); struct rpc_cred * rpcauth_lookup_credcache(struct rpc_auth *, struct auth_cred *, int, gfp_t); void rpcauth_init_cred(struct rpc_cred *, const struct auth_cred *, struct rpc_auth *, const struct rpc_credops *); struct rpc_cred * rpcauth_lookupcred(struct rpc_auth *, int); -struct rpc_cred * rpcauth_generic_bind_cred(struct rpc_task *, struct rpc_cred *, int); void put_rpccred(struct rpc_cred *); __be32 * rpcauth_marshcred(struct rpc_task *, __be32 *); __be32 * rpcauth_checkverf(struct rpc_task *, __be32 *); int rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp, __be32 *data, void *obj); int rpcauth_unwrap_resp(struct rpc_task *task, kxdrdproc_t decode, void *rqstp, __be32 *data, void *obj); +bool rpcauth_xmit_need_reencode(struct rpc_task *task); int rpcauth_refreshcred(struct rpc_task *); void rpcauth_invalcred(struct rpc_task *); int rpcauth_uptodatecred(struct rpc_task *); int rpcauth_init_credcache(struct rpc_auth *); void rpcauth_destroy_credcache(struct rpc_auth *); void rpcauth_clear_credcache(struct rpc_cred_cache *); -int rpcauth_key_timeout_notify(struct rpc_auth *, - struct rpc_cred *); -bool rpcauth_cred_key_to_expire(struct rpc_auth *, struct rpc_cred *); char * rpcauth_stringify_acceptor(struct rpc_cred *); static inline -struct rpc_cred * get_rpccred(struct rpc_cred *cred) -{ - if (cred != NULL) - atomic_inc(&cred->cr_count); - return cred; -} - -/** - * get_rpccred_rcu - get a reference to a cred using rcu-protected pointer - * @cred: cred of which to take a reference - * - * In some cases, we may have a pointer to a credential to which we - * want to take a reference, but don't already have one. Because these - * objects are freed using RCU, we can access the cr_count while its - * on its way to destruction and only take a reference if it's not already - * zero. - */ -static inline struct rpc_cred * -get_rpccred_rcu(struct rpc_cred *cred) +struct rpc_cred *get_rpccred(struct rpc_cred *cred) { - if (atomic_inc_not_zero(&cred->cr_count)) + if (cred != NULL && refcount_inc_not_zero(&cred->cr_count)) return cred; return NULL; } |