source: rtems-libbsd/freebsd/include/rpc/svc.h @ 7eeb079

4.1155-freebsd-126-freebsd-12freebsd-9.3
Last change on this file since 7eeb079 was 7eeb079, checked in by Sebastian Huber <sebastian.huber@…>, on 02/02/15 at 13:27:13

Update to FreeBSD 9.3
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File size: 14.8 KB
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1/*      $NetBSD: svc.h,v 1.17 2000/06/02 22:57:56 fvdl Exp $    */
2
3/*-
4 * Copyright (c) 2009, Sun Microsystems, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * - Redistributions of source code must retain the above copyright notice,
10 *   this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright notice,
12 *   this list of conditions and the following disclaimer in the documentation
13 *   and/or other materials provided with the distribution.
14 * - Neither the name of Sun Microsystems, Inc. nor the names of its
15 *   contributors may be used to endorse or promote products derived
16 *   from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 *
30 *      from: @(#)svc.h 1.35 88/12/17 SMI
31 *      from: @(#)svc.h      1.27    94/04/25 SMI
32 * $FreeBSD$
33 */
34
35/*
36 * svc.h, Server-side remote procedure call interface.
37 *
38 * Copyright (C) 1986-1993 by Sun Microsystems, Inc.
39 */
40
41#ifndef _RPC_SVC_H
42#define _RPC_SVC_H
43#include <sys/cdefs.h>
44
45/*
46 * This interface must manage two items concerning remote procedure calling:
47 *
48 * 1) An arbitrary number of transport connections upon which rpc requests
49 * are received.  The two most notable transports are TCP and UDP;  they are
50 * created and registered by routines in svc_tcp.c and svc_udp.c, respectively;
51 * they in turn call xprt_register and xprt_unregister.
52 *
53 * 2) An arbitrary number of locally registered services.  Services are
54 * described by the following four data: program number, version number,
55 * "service dispatch" function, a transport handle, and a boolean that
56 * indicates whether or not the exported program should be registered with a
57 * local binder service;  if true the program's number and version and the
58 * port number from the transport handle are registered with the binder.
59 * These data are registered with the rpc svc system via svc_register.
60 *
61 * A service's dispatch function is called whenever an rpc request comes in
62 * on a transport.  The request's program and version numbers must match
63 * those of the registered service.  The dispatch function is passed two
64 * parameters, struct svc_req * and SVCXPRT *, defined below.
65 */
66
67/*
68 *      Service control requests
69 */
70#define SVCGET_VERSQUIET        1
71#define SVCSET_VERSQUIET        2
72#define SVCGET_CONNMAXREC       3
73#define SVCSET_CONNMAXREC       4
74
75/*
76 * Operations for rpc_control().
77 */
78#define RPC_SVC_CONNMAXREC_SET  0       /* set max rec size, enable nonblock */
79#define RPC_SVC_CONNMAXREC_GET  1
80
81enum xprt_stat {
82        XPRT_DIED,
83        XPRT_MOREREQS,
84        XPRT_IDLE
85};
86
87/*
88 * Server side transport handle
89 */
90typedef struct __rpc_svcxprt {
91        int             xp_fd;
92        u_short         xp_port;         /* associated port number */
93        const struct xp_ops {
94            /* receive incoming requests */
95            bool_t      (*xp_recv)(struct __rpc_svcxprt *, struct rpc_msg *);
96            /* get transport status */
97            enum xprt_stat (*xp_stat)(struct __rpc_svcxprt *);
98            /* get arguments */
99            bool_t      (*xp_getargs)(struct __rpc_svcxprt *, xdrproc_t,
100                                void *);
101            /* send reply */
102            bool_t      (*xp_reply)(struct __rpc_svcxprt *, struct rpc_msg *);
103            /* free mem allocated for args */
104            bool_t      (*xp_freeargs)(struct __rpc_svcxprt *, xdrproc_t,
105                                void *);
106            /* destroy this struct */
107            void        (*xp_destroy)(struct __rpc_svcxprt *);
108        } *xp_ops;
109        int             xp_addrlen;      /* length of remote address */
110        struct sockaddr_in xp_raddr;     /* remote addr. (backward ABI compat) */
111        /* XXX - fvdl stick this here for ABI backward compat reasons */
112        const struct xp_ops2 {
113                /* catch-all function */
114                bool_t  (*xp_control)(struct __rpc_svcxprt *, const u_int,
115                                void *);
116        } *xp_ops2;
117        char            *xp_tp;          /* transport provider device name */
118        char            *xp_netid;       /* network token */
119        struct netbuf   xp_ltaddr;       /* local transport address */
120        struct netbuf   xp_rtaddr;       /* remote transport address */
121        struct opaque_auth xp_verf;      /* raw response verifier */
122        void            *xp_p1;          /* private: for use by svc ops */
123        void            *xp_p2;          /* private: for use by svc ops */
124        void            *xp_p3;          /* private: for use by svc lib */
125        int             xp_type;         /* transport type */
126} SVCXPRT;
127
128/*
129 * Interface to server-side authentication flavors.
130 */
131typedef struct __rpc_svcauth {
132        struct svc_auth_ops {
133                int   (*svc_ah_wrap)(struct __rpc_svcauth *, XDR *,
134                    xdrproc_t, caddr_t);
135                int   (*svc_ah_unwrap)(struct __rpc_svcauth *, XDR *,
136                    xdrproc_t, caddr_t);
137        } *svc_ah_ops;
138        void *svc_ah_private;
139} SVCAUTH;
140
141/*
142 * Server transport extensions (accessed via xp_p3).
143 */
144typedef struct __rpc_svcxprt_ext {
145        int             xp_flags;       /* versquiet */
146        SVCAUTH         xp_auth;        /* interface to auth methods */
147} SVCXPRT_EXT;
148
149/*
150 * Service request
151 */
152struct svc_req {
153        u_int32_t       rq_prog;        /* service program number */
154        u_int32_t       rq_vers;        /* service protocol version */
155        u_int32_t       rq_proc;        /* the desired procedure */
156        struct opaque_auth rq_cred;     /* raw creds from the wire */
157        void            *rq_clntcred;   /* read only cooked cred */
158        SVCXPRT         *rq_xprt;       /* associated transport */
159};
160
161/*
162 *  Approved way of getting address of caller
163 */
164#define svc_getrpccaller(x) (&(x)->xp_rtaddr)
165
166/*
167 * Operations defined on an SVCXPRT handle
168 *
169 * SVCXPRT              *xprt;
170 * struct rpc_msg       *msg;
171 * xdrproc_t             xargs;
172 * void *                argsp;
173 */
174#define SVC_RECV(xprt, msg)                             \
175        (*(xprt)->xp_ops->xp_recv)((xprt), (msg))
176#define svc_recv(xprt, msg)                             \
177        (*(xprt)->xp_ops->xp_recv)((xprt), (msg))
178
179#define SVC_STAT(xprt)                                  \
180        (*(xprt)->xp_ops->xp_stat)(xprt)
181#define svc_stat(xprt)                                  \
182        (*(xprt)->xp_ops->xp_stat)(xprt)
183
184#define SVC_GETARGS(xprt, xargs, argsp)                 \
185        (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
186#define svc_getargs(xprt, xargs, argsp)                 \
187        (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
188
189#define SVC_REPLY(xprt, msg)                            \
190        (*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
191#define svc_reply(xprt, msg)                            \
192        (*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
193
194#define SVC_FREEARGS(xprt, xargs, argsp)                \
195        (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
196#define svc_freeargs(xprt, xargs, argsp)                \
197        (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
198
199#define SVC_DESTROY(xprt)                               \
200        (*(xprt)->xp_ops->xp_destroy)(xprt)
201#define svc_destroy(xprt)                               \
202        (*(xprt)->xp_ops->xp_destroy)(xprt)
203
204#define SVC_CONTROL(xprt, rq, in)                       \
205        (*(xprt)->xp_ops2->xp_control)((xprt), (rq), (in))
206
207#define SVC_EXT(xprt)                                   \
208        ((SVCXPRT_EXT *) xprt->xp_p3)
209
210#define SVC_AUTH(xprt)                                  \
211        (SVC_EXT(xprt)->xp_auth)
212
213/*
214 * Operations defined on an SVCAUTH handle
215 */
216#define SVCAUTH_WRAP(auth, xdrs, xfunc, xwhere)         \
217        ((auth)->svc_ah_ops->svc_ah_wrap(auth, xdrs, xfunc, xwhere))
218#define SVCAUTH_UNWRAP(auth, xdrs, xfunc, xwhere)       \
219        ((auth)->svc_ah_ops->svc_ah_unwrap(auth, xdrs, xfunc, xwhere))
220
221/*
222 * Service registration
223 *
224 * svc_reg(xprt, prog, vers, dispatch, nconf)
225 *      const SVCXPRT *xprt;
226 *      const rpcprog_t prog;
227 *      const rpcvers_t vers;
228 *      const void (*dispatch)();
229 *      const struct netconfig *nconf;
230 */
231
232__BEGIN_DECLS
233extern bool_t   svc_reg(SVCXPRT *, const rpcprog_t, const rpcvers_t,
234                        void (*)(struct svc_req *, SVCXPRT *),
235                        const struct netconfig *);
236__END_DECLS
237
238/*
239 * Service un-registration
240 *
241 * svc_unreg(prog, vers)
242 *      const rpcprog_t prog;
243 *      const rpcvers_t vers;
244 */
245
246__BEGIN_DECLS
247extern void     svc_unreg(const rpcprog_t, const rpcvers_t);
248__END_DECLS
249
250/*
251 * Transport registration.
252 *
253 * xprt_register(xprt)
254 *      SVCXPRT *xprt;
255 */
256__BEGIN_DECLS
257extern void     xprt_register(SVCXPRT *);
258__END_DECLS
259
260/*
261 * Transport un-register
262 *
263 * xprt_unregister(xprt)
264 *      SVCXPRT *xprt;
265 */
266__BEGIN_DECLS
267extern void     xprt_unregister(SVCXPRT *);
268__END_DECLS
269
270
271/*
272 * When the service routine is called, it must first check to see if it
273 * knows about the procedure;  if not, it should call svcerr_noproc
274 * and return.  If so, it should deserialize its arguments via
275 * SVC_GETARGS (defined above).  If the deserialization does not work,
276 * svcerr_decode should be called followed by a return.  Successful
277 * decoding of the arguments should be followed the execution of the
278 * procedure's code and a call to svc_sendreply.
279 *
280 * Also, if the service refuses to execute the procedure due to too-
281 * weak authentication parameters, svcerr_weakauth should be called.
282 * Note: do not confuse access-control failure with weak authentication!
283 *
284 * NB: In pure implementations of rpc, the caller always waits for a reply
285 * msg.  This message is sent when svc_sendreply is called.
286 * Therefore pure service implementations should always call
287 * svc_sendreply even if the function logically returns void;  use
288 * xdr.h - xdr_void for the xdr routine.  HOWEVER, tcp based rpc allows
289 * for the abuse of pure rpc via batched calling or pipelining.  In the
290 * case of a batched call, svc_sendreply should NOT be called since
291 * this would send a return message, which is what batching tries to avoid.
292 * It is the service/protocol writer's responsibility to know which calls are
293 * batched and which are not.  Warning: responding to batch calls may
294 * deadlock the caller and server processes!
295 */
296
297__BEGIN_DECLS
298extern bool_t   svc_sendreply(SVCXPRT *, xdrproc_t, void *);
299extern void     svcerr_decode(SVCXPRT *);
300extern void     svcerr_weakauth(SVCXPRT *);
301extern void     svcerr_noproc(SVCXPRT *);
302extern void     svcerr_progvers(SVCXPRT *, rpcvers_t, rpcvers_t);
303extern void     svcerr_auth(SVCXPRT *, enum auth_stat);
304extern void     svcerr_noprog(SVCXPRT *);
305extern void     svcerr_systemerr(SVCXPRT *);
306extern int      rpc_reg(rpcprog_t, rpcvers_t, rpcproc_t,
307                        char *(*)(char *), xdrproc_t, xdrproc_t,
308                        char *);
309__END_DECLS
310
311/*
312 * Lowest level dispatching -OR- who owns this process anyway.
313 * Somebody has to wait for incoming requests and then call the correct
314 * service routine.  The routine svc_run does infinite waiting; i.e.,
315 * svc_run never returns.
316 * Since another (co-existant) package may wish to selectively wait for
317 * incoming calls or other events outside of the rpc architecture, the
318 * routine svc_getreq is provided.  It must be passed readfds, the
319 * "in-place" results of a select system call (see select, section 2).
320 */
321
322/*
323 * Global keeper of rpc service descriptors in use
324 * dynamic; must be inspected before each call to select
325 */
326extern int svc_maxfd;
327#ifdef FD_SETSIZE
328extern fd_set svc_fdset;
329#define svc_fds svc_fdset.fds_bits[0]   /* compatibility */
330#else
331extern int svc_fds;
332#endif /* def FD_SETSIZE */
333
334/*
335 * A set of null auth methods used by any authentication protocols
336 * that don't need to inspect or modify the message body.
337 */
338extern SVCAUTH _svc_auth_null;
339
340/*
341 * a small program implemented by the svc_rpc implementation itself;
342 * also see clnt.h for protocol numbers.
343 */
344__BEGIN_DECLS
345extern void rpctest_service(void);
346__END_DECLS
347
348__BEGIN_DECLS
349extern SVCXPRT *svc_xprt_alloc(void);
350extern void     svc_xprt_free(SVCXPRT *);
351extern void     svc_getreq(int);
352extern void     svc_getreqset(fd_set *);
353extern void     svc_getreq_common(int);
354struct pollfd;
355extern void     svc_getreq_poll(struct pollfd *, int);
356
357extern void     svc_run(void);
358extern void     svc_exit(void);
359__END_DECLS
360
361/*
362 * Socket to use on svcxxx_create call to get default socket
363 */
364#define RPC_ANYSOCK     -1
365#define RPC_ANYFD       RPC_ANYSOCK
366
367/*
368 * These are the existing service side transport implementations
369 */
370
371__BEGIN_DECLS
372/*
373 * Transport independent svc_create routine.
374 */
375extern int svc_create(void (*)(struct svc_req *, SVCXPRT *),
376                           const rpcprog_t, const rpcvers_t, const char *);
377/*
378 *      void (*dispatch)();             -- dispatch routine
379 *      const rpcprog_t prognum;        -- program number
380 *      const rpcvers_t versnum;        -- version number
381 *      const char *nettype;            -- network type
382 */
383
384
385/*
386 * Generic server creation routine. It takes a netconfig structure
387 * instead of a nettype.
388 */
389
390extern SVCXPRT *svc_tp_create(void (*)(struct svc_req *, SVCXPRT *),
391                                   const rpcprog_t, const rpcvers_t,
392                                   const struct netconfig *);
393        /*
394         * void (*dispatch)();            -- dispatch routine
395         * const rpcprog_t prognum;       -- program number
396         * const rpcvers_t versnum;       -- version number
397         * const struct netconfig *nconf; -- netconfig structure
398         */
399
400
401/*
402 * Generic TLI create routine
403 */
404extern SVCXPRT *svc_tli_create(const int, const struct netconfig *,
405                               const struct t_bind *, const u_int,
406                               const u_int);
407/*
408 *      const int fd;                   -- connection end point
409 *      const struct netconfig *nconf;  -- netconfig structure for network
410 *      const struct t_bind *bindaddr;  -- local bind address
411 *      const u_int sendsz;             -- max sendsize
412 *      const u_int recvsz;             -- max recvsize
413 */
414
415/*
416 * Connectionless and connectionful create routines
417 */
418
419extern SVCXPRT *svc_vc_create(const int, const u_int, const u_int);
420/*
421 *      const int fd;                           -- open connection end point
422 *      const u_int sendsize;                   -- max send size
423 *      const u_int recvsize;                   -- max recv size
424 */
425
426/*
427 * Added for compatibility to old rpc 4.0. Obsoleted by svc_vc_create().
428 */
429extern SVCXPRT *svcunix_create(int, u_int, u_int, char *);
430
431extern SVCXPRT *svc_dg_create(const int, const u_int, const u_int);
432        /*
433         * const int fd;                                -- open connection
434         * const u_int sendsize;                        -- max send size
435         * const u_int recvsize;                        -- max recv size
436         */
437
438
439/*
440 * the routine takes any *open* connection
441 * descriptor as its first input and is used for open connections.
442 */
443extern SVCXPRT *svc_fd_create(const int, const u_int, const u_int);
444/*
445 *      const int fd;                           -- open connection end point
446 *      const u_int sendsize;                   -- max send size
447 *      const u_int recvsize;                   -- max recv size
448 */
449
450/*
451 * Added for compatibility to old rpc 4.0. Obsoleted by svc_fd_create().
452 */
453extern SVCXPRT *svcunixfd_create(int, u_int, u_int);
454
455/*
456 * Memory based rpc (for speed check and testing)
457 */
458extern SVCXPRT *svc_raw_create(void);
459
460/*
461 * svc_dg_enable_cache() enables the cache on dg transports.
462 */
463int svc_dg_enablecache(SVCXPRT *, const u_int);
464
465int __rpc_get_local_uid(SVCXPRT *_transp, uid_t *_uid);
466
467__END_DECLS
468
469
470/* for backward compatibility */
471#include <rpc/svc_soc.h>
472
473#endif /* !_RPC_SVC_H */
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