linux/include/linux/sunrpc/auth.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * linux/include/linux/sunrpc/auth.h
 *
 * Declarations for the RPC client authentication machinery.
 *
 * Copyright (C) 1996, Olaf Kirch <[email protected]>
 */

#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 …
#define NUL_REPLYSLACK …

/*
 * 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 …
#define UNX_CALLSLACK …
#define UNX_NGROUPS …

struct rpcsec_gss_info;

struct auth_cred { … };

/*
 * Client user credentials
 */
struct rpc_auth;
struct rpc_credops;
struct rpc_cred { … };
#define RPCAUTH_CRED_NEW …
#define RPCAUTH_CRED_UPTODATE …
#define RPCAUTH_CRED_HASHED …
#define RPCAUTH_CRED_NEGATIVE …

const struct cred *rpc_machine_cred(void);

/*
 * Client authentication handle
 */
struct rpc_cred_cache;
struct rpc_authops;
struct rpc_auth { … };

/* rpc_auth au_flags */
#define RPCAUTH_AUTH_DATATOUCH …
#define RPCAUTH_AUTH_UPDATE_SLACK …

struct rpc_auth_create_args { … };

/* Flags for rpcauth_lookupcred() */
#define RPCAUTH_LOOKUP_NEW …
#define RPCAUTH_LOOKUP_ASYNC …

/*
 * Client authentication ops
 */
struct rpc_authops { … };

struct rpc_credops { … };

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 inline
struct rpc_cred *get_rpccred(struct rpc_cred *cred)
{ … }

#endif /* _LINUX_SUNRPC_AUTH_H */