/* $NetBSD: svc.h,v 1.17 2000/06/02 22:57:56 fvdl Exp $ */
* Copyright (c) 2009, Sun Microsystems, Inc.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* from: @(#)svc.h 1.35 88/12/17 SMI
* from: @(#)svc.h 1.27 94/04/25 SMI
* $FreeBSD: src/include/rpc/svc.h,v 1.24 2003/06/15 10:32:01 mbr Exp $
* svc.h, Server-side remote procedure call interface.
* Copyright (C) 1986-1993 by Sun Microsystems, Inc.
* 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
* Server side transport handle
typedef struct __rpc_svcxprt {
u_short xp_port; /* associated port number */
/* receive incoming requests */
bool_t (*xp_recv)(struct __rpc_svcxprt *, struct rpc_msg *);
/* get transport status */
enum xprt_stat (*xp_stat)(struct __rpc_svcxprt *);
bool_t (*xp_getargs)(struct __rpc_svcxprt *, xdrproc_t,
bool_t (*xp_reply)(struct __rpc_svcxprt *, struct rpc_msg *);
/* free mem allocated for args */
bool_t (*xp_freeargs)(struct __rpc_svcxprt *, xdrproc_t,
/* destroy this struct */
void (*xp_destroy)(struct __rpc_svcxprt *);
int xp_addrlen; /* length of remote address */
struct sockaddr_in6 xp_raddr; /* remote addr. (backward ABI compat) */
/* XXX - fvdl stick this here for ABI backward compat reasons */
bool_t (*xp_control)(struct __rpc_svcxprt *, const u_int,
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 */
/* ORDER: compatibility with legacy RPC */
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 */
caddr_t rq_clntname; /* read only client name */
caddr_t rq_svcname; /* read only cooked service cred */
* Approved way of getting address of caller
#define svc_getrpccaller(x) (&(x)->xp_rtaddr)
* Operations defined on an SVCXPRT handle
#define SVC_RECV(xprt, msg) \
(*(xprt)->xp_ops->xp_recv)((xprt), (msg))
#define svc_recv(xprt, msg) \
(*(xprt)->xp_ops->xp_recv)((xprt), (msg))
(*(xprt)->xp_ops->xp_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))
* svc_reg(xprt, prog, vers, dispatch, nconf)
* const void (*dispatch)();
* const struct netconfig *nconf;
extern bool_t svc_reg(SVCXPRT *, const rpcprog_t, const rpcvers_t,
void (*)(struct svc_req *, SVCXPRT *),
const struct netconfig *);
* Service un-registration
extern void svc_unreg(const rpcprog_t, const rpcvers_t);
* Transport registration.
extern void xprt_register(SVCXPRT *);
extern void xprt_unregister(SVCXPRT *);
* 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!
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,
* 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.,
* Since another (co-existant) 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
#define svc_fds svc_fdset.fds_bits[0] /* compatibility */
extern struct pollfd *svc_pollfd;
extern int svc_max_pollfd;
* a small program implemented by the svc_rpc implementation itself;
* also see clnt.h for protocol numbers.
extern void rpctest_service(void);
extern void svc_getreq(int);
extern void svc_getreqset(fd_set *);
extern void svc_getreq_common(int);
extern void svc_getreq_poll(struct pollfd *, int);
extern void svc_run(void);
extern void svc_exit(void);
* Socket to use on svcxxx_create call to get default socket
#define RPC_ANYFD RPC_ANYSOCK
* These are the existing service side transport implementations
* Transport independent svc_create routine.
extern int svc_create(void (*)(struct svc_req *, SVCXPRT *),
const rpcprog_t, const rpcvers_t, const char *);
* void (*dispatch)(); -- dispatch routine
* 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
extern SVCXPRT *svc_tp_create(void (*)(struct svc_req *, SVCXPRT *),
const rpcprog_t, const rpcvers_t,
const struct netconfig *);
* void (*dispatch)(); -- dispatch routine
* 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 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);
/* for backward compatibility */
#endif /* !_TIRPC_SVC_H */