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freebsd-dev/include/rpc/svc.h
Pedro F. Giffuni 46f442e58a Revert r240060: (Partial) 
__BEGIN_DECLS and __END_DECLS in cdefs.h take care of the
__cplusplus mangling issues so most of the definitions
were redundant.

In the few places where they were not redundant we should
use BSD style instead of the guards used upstream.

Reported by:	Yuri Pankov
2012-09-02 22:23:23 +00:00

475 lines
14 KiB
C
Raw Blame History

/* $NetBSD: svc.h,v 1.17 2000/06/02 22:57:56 fvdl Exp $ */
/*
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
*
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*
* from: @(#)svc.h 1.35 88/12/17 SMI
* from: @(#)svc.h 1.27 94/04/25 SMI
* $FreeBSD$
*/
/*
* svc.h, Server-side remote procedure call interface.
*
* Copyright (C) 1986-1993 by Sun Microsystems, Inc.
*/
#ifndef _RPC_SVC_H
#define _RPC_SVC_H
#include <sys/cdefs.h>
/*
* This interface must manage two items concerning remote procedure calling:
*
* 1) An arbitrary number of transport connections upon which rpc requests
* are received. The two most notable transports are TCP and UDP; they are
* created and registered by routines in svc_tcp.c and svc_udp.c, respectively;
* they in turn call xprt_register and xprt_unregister.
*
* 2) An arbitrary number of locally registered services. Services are
* described by the following four data: program number, version number,
* "service dispatch" function, a transport handle, and a boolean that
* indicates whether or not the exported program should be registered with a
* local binder service; if true the program's number and version and the
* port number from the transport handle are registered with the binder.
* These data are registered with the rpc svc system via svc_register.
*
* A service's dispatch function is called whenever an rpc request comes in
* on a transport. The request's program and version numbers must match
* those of the registered service. The dispatch function is passed two
* parameters, struct svc_req * and SVCXPRT *, defined below.
*/
/*
* Service control requests
*/
#define SVCGET_VERSQUIET 1
#define SVCSET_VERSQUIET 2
#define SVCGET_CONNMAXREC 3
#define SVCSET_CONNMAXREC 4
/*
* Operations for rpc_control().
*/
#define RPC_SVC_CONNMAXREC_SET 0 /* set max rec size, enable nonblock */
#define RPC_SVC_CONNMAXREC_GET 1
enum xprt_stat {
XPRT_DIED,
XPRT_MOREREQS,
XPRT_IDLE
};
/*
* Server side transport handle
*/
typedef struct __rpc_svcxprt {
int xp_fd;
u_short xp_port; /* associated port number */
const struct xp_ops {
/* receive incoming requests */
bool_t (*xp_recv)(struct __rpc_svcxprt *, struct rpc_msg *);
/* get transport status */
enum xprt_stat (*xp_stat)(struct __rpc_svcxprt *);
/* get arguments */
bool_t (*xp_getargs)(struct __rpc_svcxprt *, xdrproc_t,
void *);
/* send reply */
bool_t (*xp_reply)(struct __rpc_svcxprt *, struct rpc_msg *);
/* free mem allocated for args */
bool_t (*xp_freeargs)(struct __rpc_svcxprt *, xdrproc_t,
void *);
/* destroy this struct */
void (*xp_destroy)(struct __rpc_svcxprt *);
} *xp_ops;
int xp_addrlen; /* length of remote address */
struct sockaddr_in xp_raddr; /* remote addr. (backward ABI compat) */
/* XXX - fvdl stick this here for ABI backward compat reasons */
const struct xp_ops2 {
/* catch-all function */
bool_t (*xp_control)(struct __rpc_svcxprt *, const u_int,
void *);
} *xp_ops2;
char *xp_tp; /* transport provider device name */
char *xp_netid; /* network token */
struct netbuf xp_ltaddr; /* local transport address */
struct netbuf xp_rtaddr; /* remote transport address */
struct opaque_auth xp_verf; /* raw response verifier */
void *xp_p1; /* private: for use by svc ops */
void *xp_p2; /* private: for use by svc ops */
void *xp_p3; /* private: for use by svc lib */
int xp_type; /* transport type */
} SVCXPRT;
/*
* Interface to server-side authentication flavors.
*/
typedef struct __rpc_svcauth {
struct svc_auth_ops {
int (*svc_ah_wrap)(struct __rpc_svcauth *, XDR *,
xdrproc_t, caddr_t);
int (*svc_ah_unwrap)(struct __rpc_svcauth *, XDR *,
xdrproc_t, caddr_t);
} *svc_ah_ops;
void *svc_ah_private;
} SVCAUTH;
/*
* Server transport extensions (accessed via xp_p3).
*/
typedef struct __rpc_svcxprt_ext {
int xp_flags; /* versquiet */
SVCAUTH xp_auth; /* interface to auth methods */
} SVCXPRT_EXT;
/*
* Service request
*/
struct svc_req {
u_int32_t rq_prog; /* service program number */
u_int32_t rq_vers; /* service protocol version */
u_int32_t rq_proc; /* the desired procedure */
struct opaque_auth rq_cred; /* raw creds from the wire */
void *rq_clntcred; /* read only cooked cred */
SVCXPRT *rq_xprt; /* associated transport */
};
/*
* Approved way of getting address of caller
*/
#define svc_getrpccaller(x) (&(x)->xp_rtaddr)
/*
* Operations defined on an SVCXPRT handle
*
* SVCXPRT *xprt;
* struct rpc_msg *msg;
* xdrproc_t xargs;
* void * argsp;
*/
#define SVC_RECV(xprt, msg) \
(*(xprt)->xp_ops->xp_recv)((xprt), (msg))
#define svc_recv(xprt, msg) \
(*(xprt)->xp_ops->xp_recv)((xprt), (msg))
#define SVC_STAT(xprt) \
(*(xprt)->xp_ops->xp_stat)(xprt)
#define svc_stat(xprt) \
(*(xprt)->xp_ops->xp_stat)(xprt)
#define SVC_GETARGS(xprt, xargs, argsp) \
(*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
#define svc_getargs(xprt, xargs, argsp) \
(*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
#define SVC_REPLY(xprt, msg) \
(*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
#define svc_reply(xprt, msg) \
(*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
#define SVC_FREEARGS(xprt, xargs, argsp) \
(*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
#define svc_freeargs(xprt, xargs, argsp) \
(*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
#define SVC_DESTROY(xprt) \
(*(xprt)->xp_ops->xp_destroy)(xprt)
#define svc_destroy(xprt) \
(*(xprt)->xp_ops->xp_destroy)(xprt)
#define SVC_CONTROL(xprt, rq, in) \
(*(xprt)->xp_ops2->xp_control)((xprt), (rq), (in))
#define SVC_EXT(xprt) \
((SVCXPRT_EXT *) xprt->xp_p3)
#define SVC_AUTH(xprt) \
(SVC_EXT(xprt)->xp_auth)
/*
* Operations defined on an SVCAUTH handle
*/
#define SVCAUTH_WRAP(auth, xdrs, xfunc, xwhere) \
((auth)->svc_ah_ops->svc_ah_wrap(auth, xdrs, xfunc, xwhere))
#define SVCAUTH_UNWRAP(auth, xdrs, xfunc, xwhere) \
((auth)->svc_ah_ops->svc_ah_unwrap(auth, xdrs, xfunc, xwhere))
/*
* Service registration
*
* svc_reg(xprt, prog, vers, dispatch, nconf)
* const SVCXPRT *xprt;
* const rpcprog_t prog;
* const rpcvers_t vers;
* const void (*dispatch)(struct svc_req *, SVCXPRT *);
* const struct netconfig *nconf;
*/
__BEGIN_DECLS
extern bool_t svc_reg(SVCXPRT *, const rpcprog_t, const rpcvers_t,
void (*)(struct svc_req *, SVCXPRT *),
const struct netconfig *);
__END_DECLS
/*
* Service un-registration
*
* svc_unreg(prog, vers)
* const rpcprog_t prog;
* const rpcvers_t vers;
*/
__BEGIN_DECLS
extern void svc_unreg(const rpcprog_t, const rpcvers_t);
__END_DECLS
/*
* Transport registration.
*
* xprt_register(xprt)
* SVCXPRT *xprt;
*/
__BEGIN_DECLS
extern void xprt_register(SVCXPRT *);
__END_DECLS
/*
* Transport un-register
*
* xprt_unregister(xprt)
* SVCXPRT *xprt;
*/
__BEGIN_DECLS
extern void xprt_unregister(SVCXPRT *);
__END_DECLS
/*
* When the service routine is called, it must first check to see if it
* knows about the procedure; if not, it should call svcerr_noproc
* and return. If so, it should deserialize its arguments via
* SVC_GETARGS (defined above). If the deserialization does not work,
* svcerr_decode should be called followed by a return. Successful
* decoding of the arguments should be followed the execution of the
* procedure's code and a call to svc_sendreply.
*
* Also, if the service refuses to execute the procedure due to too-
* weak authentication parameters, svcerr_weakauth should be called.
* Note: do not confuse access-control failure with weak authentication!
*
* NB: In pure implementations of rpc, the caller always waits for a reply
* msg. This message is sent when svc_sendreply is called.
* Therefore pure service implementations should always call
* svc_sendreply even if the function logically returns void; use
* xdr.h - xdr_void for the xdr routine. HOWEVER, tcp based rpc allows
* for the abuse of pure rpc via batched calling or pipelining. In the
* case of a batched call, svc_sendreply should NOT be called since
* this would send a return message, which is what batching tries to avoid.
* It is the service/protocol writer's responsibility to know which calls are
* batched and which are not. Warning: responding to batch calls may
* deadlock the caller and server processes!
*/
__BEGIN_DECLS
extern bool_t svc_sendreply(SVCXPRT *, xdrproc_t, void *);
extern void svcerr_decode(SVCXPRT *);
extern void svcerr_weakauth(SVCXPRT *);
extern void svcerr_noproc(SVCXPRT *);
extern void svcerr_progvers(SVCXPRT *, rpcvers_t, rpcvers_t);
extern void svcerr_auth(SVCXPRT *, enum auth_stat);
extern void svcerr_noprog(SVCXPRT *);
extern void svcerr_systemerr(SVCXPRT *);
extern int rpc_reg(rpcprog_t, rpcvers_t, rpcproc_t,
char *(*)(char *), xdrproc_t, xdrproc_t,
char *);
__END_DECLS
/*
* Lowest level dispatching -OR- who owns this process anyway.
* Somebody has to wait for incoming requests and then call the correct
* service routine. The routine svc_run does infinite waiting; i.e.,
* svc_run never returns.
* Since another (co-existent) package may wish to selectively wait for
* incoming calls or other events outside of the rpc architecture, the
* routine svc_getreq is provided. It must be passed readfds, the
* "in-place" results of a select system call (see select, section 2).
*/
/*
* Global keeper of rpc service descriptors in use
* dynamic; must be inspected before each call to select
*/
extern int svc_maxfd;
#ifdef FD_SETSIZE
extern fd_set svc_fdset;
#define svc_fds svc_fdset.fds_bits[0] /* compatibility */
#else
extern int svc_fds;
#endif /* def FD_SETSIZE */
/*
* A set of null auth methods used by any authentication protocols
* that don't need to inspect or modify the message body.
*/
extern SVCAUTH _svc_auth_null;
/*
* a small program implemented by the svc_rpc implementation itself;
* also see clnt.h for protocol numbers.
*/
__BEGIN_DECLS
extern void rpctest_service(void);
__END_DECLS
__BEGIN_DECLS
extern SVCXPRT *svc_xprt_alloc(void);
extern void svc_xprt_free(SVCXPRT *);
extern void svc_getreq(int);
extern void svc_getreqset(fd_set *);
extern void svc_getreq_common(int);
struct pollfd;
extern void svc_getreq_poll(struct pollfd *, int);
extern void svc_run(void);
extern void svc_exit(void);
__END_DECLS
/*
* Socket to use on svcxxx_create call to get default socket
*/
#define RPC_ANYSOCK -1
#define RPC_ANYFD RPC_ANYSOCK
/*
* These are the existing service side transport implementations
*/
__BEGIN_DECLS
/*
* Transport independent svc_create routine.
*/
extern int svc_create(void (*)(struct svc_req *, SVCXPRT *),
const rpcprog_t, const rpcvers_t, const char *);
/*
* void (*dispatch)(struct svc_req *, SVCXPRT *);
* const rpcprog_t prognum; -- program number
* const rpcvers_t versnum; -- version number
* const char *nettype; -- network type
*/
/*
* Generic server creation routine. It takes a netconfig structure
* instead of a nettype.
*/
extern SVCXPRT *svc_tp_create(void (*)(struct svc_req *, SVCXPRT *),
const rpcprog_t, const rpcvers_t,
const struct netconfig *);
/*
* void (*dispatch)(struct svc_req *, SVCXPRT *);
* const rpcprog_t prognum; -- program number
* const rpcvers_t versnum; -- version number
* const struct netconfig *nconf; -- netconfig structure
*/
/*
* Generic TLI create routine
*/
extern SVCXPRT *svc_tli_create(const int, const struct netconfig *,
const struct t_bind *, const u_int,
const u_int);
/*
* const int fd; -- connection end point
* const struct netconfig *nconf; -- netconfig structure for network
* const struct t_bind *bindaddr; -- local bind address
* const u_int sendsz; -- max sendsize
* const u_int recvsz; -- max recvsize
*/
/*
* Connectionless and connectionful create routines
*/
extern SVCXPRT *svc_vc_create(const int, const u_int, const u_int);
/*
* const int fd; -- open connection end point
* const u_int sendsize; -- max send size
* const u_int recvsize; -- max recv size
*/
/*
* Added for compatibility to old rpc 4.0. Obsoleted by svc_vc_create().
*/
extern SVCXPRT *svcunix_create(int, u_int, u_int, char *);
extern SVCXPRT *svc_dg_create(const int, const u_int, const u_int);
/*
* const int fd; -- open connection
* const u_int sendsize; -- max send size
* const u_int recvsize; -- max recv size
*/
/*
* the routine takes any *open* connection
* descriptor as its first input and is used for open connections.
*/
extern SVCXPRT *svc_fd_create(const int, const u_int, const u_int);
/*
* const int fd; -- open connection end point
* const u_int sendsize; -- max send size
* const u_int recvsize; -- max recv size
*/
/*
* Added for compatibility to old rpc 4.0. Obsoleted by svc_fd_create().
*/
extern SVCXPRT *svcunixfd_create(int, u_int, u_int);
/*
* Memory based rpc (for speed check and testing)
*/
extern SVCXPRT *svc_raw_create(void);
/*
* svc_dg_enable_cache() enables the cache on dg transports.
*/
int svc_dg_enablecache(SVCXPRT *, const u_int);
int __rpc_get_local_uid(SVCXPRT *_transp, uid_t *_uid);
__END_DECLS
/* for backward compatibility */
#include <rpc/svc_soc.h>
#endif /* !_RPC_SVC_H */
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