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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198/* SPDX-License-Identifier: GPL-2.0 *//* * linux/include/linux/sunrpc/auth.h * * Declarations for the RPC client authentication machinery. * * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de> */
#ifndef _LINUX_SUNRPC_AUTH_H#define _LINUX_SUNRPC_AUTH_H
#include <linux/sunrpc/sched.h>#include <linux/sunrpc/msg_prot.h>#include <linux/sunrpc/xdr.h>
#include <linux/atomic.h>#include <linux/rcupdate.h>#include <linux/uidgid.h>#include <linux/utsname.h>
/* * Maximum size of AUTH_NONE authentication information, in XDR words. */#define NUL_CALLSLACK (4)#define NUL_REPLYSLACK (2)
/* * Size of the nodename buffer. RFC1831 specifies a hard limit of 255 bytes, * but Linux hostnames are actually limited to __NEW_UTS_LEN bytes. */#define UNX_MAXNODENAME __NEW_UTS_LEN#define UNX_CALLSLACK (21 + XDR_QUADLEN(UNX_MAXNODENAME))#define UNX_NGROUPS 16
struct rpcsec_gss_info;
struct auth_cred { const struct cred *cred; const char *principal; /* If present, this is a machine credential */};
/* * Client user credentials */struct rpc_auth;struct rpc_credops;struct rpc_cred { struct hlist_node cr_hash; /* hash chain */ struct list_head cr_lru; /* lru garbage collection */ struct rcu_head cr_rcu; struct rpc_auth * cr_auth; const struct rpc_credops *cr_ops; unsigned long cr_expire; /* when to gc */ unsigned long cr_flags; /* various flags */ refcount_t cr_count; /* ref count */ const struct cred *cr_cred;
/* per-flavor data */};#define RPCAUTH_CRED_NEW 0#define RPCAUTH_CRED_UPTODATE 1#define RPCAUTH_CRED_HASHED 2#define RPCAUTH_CRED_NEGATIVE 3
const struct cred *rpc_machine_cred(void);
/* * Client authentication handle */struct rpc_cred_cache;struct rpc_authops;struct rpc_auth { unsigned int au_cslack; /* call cred size estimate */ unsigned int au_rslack; /* reply cred size estimate */ unsigned int au_verfsize; /* size of reply verifier */ unsigned int au_ralign; /* words before UL header */
unsigned long au_flags; const struct rpc_authops *au_ops; rpc_authflavor_t au_flavor; /* pseudoflavor (note may * differ from the flavor in * au_ops->au_flavor in gss * case) */ refcount_t au_count; /* Reference counter */
struct rpc_cred_cache * au_credcache; /* per-flavor data */};
/* rpc_auth au_flags */#define RPCAUTH_AUTH_DATATOUCH (1)#define RPCAUTH_AUTH_UPDATE_SLACK (2)
struct rpc_auth_create_args { rpc_authflavor_t pseudoflavor; const char *target_name;};
/* Flags for rpcauth_lookupcred() */#define RPCAUTH_LOOKUP_NEW 0x01 /* Accept an uninitialised cred */#define RPCAUTH_LOOKUP_ASYNC 0x02 /* Don't block waiting for memory */
/* * Client authentication ops */struct rpc_authops { struct module *owner; rpc_authflavor_t au_flavor; /* flavor (RPC_AUTH_*) */ char * au_name; 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); struct rpc_cred * (*lookup_cred)(struct rpc_auth *, struct auth_cred *, int); struct rpc_cred * (*crcreate)(struct rpc_auth*, struct auth_cred *, int, gfp_t); rpc_authflavor_t (*info2flavor)(struct rpcsec_gss_info *); int (*flavor2info)(rpc_authflavor_t, struct rpcsec_gss_info *); int (*key_timeout)(struct rpc_auth *, struct rpc_cred *); int (*ping)(struct rpc_clnt *clnt);};
struct rpc_credops { const char * cr_name; /* Name of the auth flavour */ int (*cr_init)(struct rpc_auth *, struct rpc_cred *); void (*crdestroy)(struct rpc_cred *);
int (*crmatch)(struct auth_cred *, struct rpc_cred *, int); int (*crmarshal)(struct rpc_task *task, struct xdr_stream *xdr); int (*crrefresh)(struct rpc_task *); int (*crvalidate)(struct rpc_task *task, struct xdr_stream *xdr); int (*crwrap_req)(struct rpc_task *task, struct xdr_stream *xdr); int (*crunwrap_resp)(struct rpc_task *task, struct xdr_stream *xdr); int (*crkey_timeout)(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;extern const struct rpc_authops authtls_ops;
int __init rpc_init_authunix(void);int __init rpcauth_init_module(void);void rpcauth_remove_module(void);void rpc_destroy_authunix(void);
int rpcauth_register(const struct rpc_authops *);int rpcauth_unregister(const struct rpc_authops *);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, struct rpcsec_gss_info *);int rpcauth_get_gssinfo(rpc_authflavor_t, struct rpcsec_gss_info *);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);void put_rpccred(struct rpc_cred *);int rpcauth_marshcred(struct rpc_task *task, struct xdr_stream *xdr);int rpcauth_checkverf(struct rpc_task *task, struct xdr_stream *xdr);int rpcauth_wrap_req_encode(struct rpc_task *task, struct xdr_stream *xdr);int rpcauth_wrap_req(struct rpc_task *task, struct xdr_stream *xdr);int rpcauth_unwrap_resp_decode(struct rpc_task *task, struct xdr_stream *xdr);int rpcauth_unwrap_resp(struct rpc_task *task, struct xdr_stream *xdr);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 *);char * rpcauth_stringify_acceptor(struct rpc_cred *);
static inlinestruct rpc_cred *get_rpccred(struct rpc_cred *cred){ if (cred != NULL && refcount_inc_not_zero(&cred->cr_count)) return cred; return NULL;}
#endif /* _LINUX_SUNRPC_AUTH_H */