1 /* $NetBSD: svc.h,v 1.17 2000/06/02 22:57:56 fvdl Exp $ */
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29 * Mountain View, California 94043
31 * from: @(#)svc.h 1.35 88/12/17 SMI
32 * from: @(#)svc.h 1.27 94/04/25 SMI
37 * svc.h, Server-side remote procedure call interface.
39 * Copyright (C) 1986-1993 by Sun Microsystems, Inc.
44 #include <sys/cdefs.h>
47 #include <sys/queue.h>
48 #include <sys/_lock.h>
49 #include <sys/_mutex.h>
51 #include <sys/condvar.h>
52 #include <sys/sysctl.h>
56 * This interface must manage two items concerning remote procedure calling:
58 * 1) An arbitrary number of transport connections upon which rpc requests
59 * are received. The two most notable transports are TCP and UDP; they are
60 * created and registered by routines in svc_tcp.c and svc_udp.c, respectively;
61 * they in turn call xprt_register and xprt_unregister.
63 * 2) An arbitrary number of locally registered services. Services are
64 * described by the following four data: program number, version number,
65 * "service dispatch" function, a transport handle, and a boolean that
66 * indicates whether or not the exported program should be registered with a
67 * local binder service; if true the program's number and version and the
68 * port number from the transport handle are registered with the binder.
69 * These data are registered with the rpc svc system via svc_register.
71 * A service's dispatch function is called whenever an rpc request comes in
72 * on a transport. The request's program and version numbers must match
73 * those of the registered service. The dispatch function is passed two
74 * parameters, struct svc_req * and SVCXPRT *, defined below.
78 * Service control requests
80 #define SVCGET_VERSQUIET 1
81 #define SVCSET_VERSQUIET 2
82 #define SVCGET_CONNMAXREC 3
83 #define SVCSET_CONNMAXREC 4
86 * Operations for rpc_control().
88 #define RPC_SVC_CONNMAXREC_SET 0 /* set max rec size, enable nonblock */
89 #define RPC_SVC_CONNMAXREC_GET 1
102 /* receive incoming requests */
103 bool_t (*xp_recv)(struct __rpc_svcxprt *, struct rpc_msg *,
104 struct sockaddr **, struct mbuf **);
105 /* get transport status */
106 enum xprt_stat (*xp_stat)(struct __rpc_svcxprt *);
108 bool_t (*xp_reply)(struct __rpc_svcxprt *, struct rpc_msg *,
109 struct sockaddr *, struct mbuf *);
110 /* destroy this struct */
111 void (*xp_destroy)(struct __rpc_svcxprt *);
112 /* catch-all function */
113 bool_t (*xp_control)(struct __rpc_svcxprt *, const u_int, void *);
115 /* receive incoming requests */
116 bool_t (*xp_recv)(struct __rpc_svcxprt *, struct rpc_msg *);
117 /* get transport status */
118 enum xprt_stat (*xp_stat)(struct __rpc_svcxprt *);
120 bool_t (*xp_getargs)(struct __rpc_svcxprt *, xdrproc_t, void *);
122 bool_t (*xp_reply)(struct __rpc_svcxprt *, struct rpc_msg *);
123 /* free mem allocated for args */
124 bool_t (*xp_freeargs)(struct __rpc_svcxprt *, xdrproc_t, void *);
125 /* destroy this struct */
126 void (*xp_destroy)(struct __rpc_svcxprt *);
132 /* catch-all function */
133 bool_t (*xp_control)(struct __rpc_svcxprt *, const u_int, void *);
138 struct __rpc_svcpool;
139 struct __rpc_svcthread;
143 * Server side transport handle. In the kernel, transports have a
144 * reference count which tracks the number of currently assigned
145 * worker threads plus one for the service pool's reference.
147 typedef struct __rpc_svcxprt {
149 volatile u_int xp_refs;
151 struct __rpc_svcpool *xp_pool; /* owning pool (see below) */
152 TAILQ_ENTRY(__rpc_svcxprt) xp_link;
153 TAILQ_ENTRY(__rpc_svcxprt) xp_alink;
154 bool_t xp_registered; /* xprt_register has been called */
155 bool_t xp_active; /* xprt_active has been called */
156 struct __rpc_svcthread *xp_thread; /* assigned service thread */
157 struct socket* xp_socket;
158 const struct xp_ops *xp_ops;
159 char *xp_netid; /* network token */
160 struct sockaddr_storage xp_ltaddr; /* local transport address */
161 struct sockaddr_storage xp_rtaddr; /* remote transport address */
162 void *xp_p1; /* private: for use by svc ops */
163 void *xp_p2; /* private: for use by svc ops */
164 void *xp_p3; /* private: for use by svc lib */
165 int xp_type; /* transport type */
166 int xp_idletimeout; /* idle time before closing */
167 time_t xp_lastactive; /* time of last RPC */
170 u_short xp_port; /* associated port number */
171 const struct xp_ops *xp_ops;
172 int xp_addrlen; /* length of remote address */
173 struct sockaddr_in xp_raddr; /* remote addr. (backward ABI compat) */
174 /* XXX - fvdl stick this here for ABI backward compat reasons */
175 const struct xp_ops2 *xp_ops2;
176 char *xp_tp; /* transport provider device name */
177 char *xp_netid; /* network token */
178 struct netbuf xp_ltaddr; /* local transport address */
179 struct netbuf xp_rtaddr; /* remote transport address */
180 struct opaque_auth xp_verf; /* raw response verifier */
181 void *xp_p1; /* private: for use by svc ops */
182 void *xp_p2; /* private: for use by svc ops */
183 void *xp_p3; /* private: for use by svc lib */
184 int xp_type; /* transport type */
189 * Interface to server-side authentication flavors.
191 typedef struct __rpc_svcauth {
192 struct svc_auth_ops {
194 int (*svc_ah_wrap)(struct __rpc_svcauth *, struct mbuf **);
195 int (*svc_ah_unwrap)(struct __rpc_svcauth *, struct mbuf **);
196 void (*svc_ah_release)(struct __rpc_svcauth *);
198 int (*svc_ah_wrap)(struct __rpc_svcauth *, XDR *,
200 int (*svc_ah_unwrap)(struct __rpc_svcauth *, XDR *,
204 void *svc_ah_private;
208 * Server transport extensions (accessed via xp_p3).
210 typedef struct __rpc_svcxprt_ext {
211 int xp_flags; /* versquiet */
212 SVCAUTH xp_auth; /* interface to auth methods */
219 * Each entry represents a set of procedures (an rpc program).
220 * The dispatch routine takes request structs and runs the
221 * apropriate procedure.
224 TAILQ_ENTRY(svc_callout) sc_link;
228 void (*sc_dispatch)(struct svc_req *, SVCXPRT *);
230 TAILQ_HEAD(svc_callout_list, svc_callout);
232 struct __rpc_svcthread;
238 STAILQ_ENTRY(svc_req) rq_link; /* list of requests for a thread */
239 struct __rpc_svcthread *rq_thread; /* thread which is to execute this */
240 uint32_t rq_xid; /* RPC transaction ID */
241 uint32_t rq_prog; /* service program number */
242 uint32_t rq_vers; /* service protocol version */
243 uint32_t rq_proc; /* the desired procedure */
244 size_t rq_size; /* space used by request */
245 struct mbuf *rq_args; /* XDR-encoded procedure arguments */
246 struct opaque_auth rq_cred; /* raw creds from the wire */
247 struct opaque_auth rq_verf; /* verifier for the reply */
248 void *rq_clntcred; /* read only cooked cred */
249 SVCAUTH rq_auth; /* interface to auth methods */
250 SVCXPRT *rq_xprt; /* associated transport */
251 struct sockaddr *rq_addr; /* reply address or NULL if connected */
252 void *rq_p1; /* application workspace */
253 int rq_p2; /* application workspace */
254 uint64_t rq_p3; /* application workspace */
255 char rq_credarea[3*MAX_AUTH_BYTES];
257 STAILQ_HEAD(svc_reqlist, svc_req);
259 #define svc_getrpccaller(rq) \
260 ((rq)->rq_addr ? (rq)->rq_addr : \
261 (struct sockaddr *) &(rq)->rq_xprt->xp_rtaddr)
264 * This structure is used to manage a thread which is executing
265 * requests from a service pool. A service thread is in one of three
268 * SVCTHREAD_SLEEPING waiting for a request to process
269 * SVCTHREAD_ACTIVE processing a request
270 * SVCTHREAD_EXITING exiting after finishing current request
272 * Threads which have no work to process sleep on the pool's sp_active
273 * list. When a transport becomes active, it is assigned a service
274 * thread to read and execute pending RPCs.
276 typedef struct __rpc_svcthread {
277 SVCXPRT *st_xprt; /* transport we are processing */
278 struct svc_reqlist st_reqs; /* RPC requests to execute */
279 int st_reqcount; /* number of queued reqs */
280 struct cv st_cond; /* sleeping for work */
281 LIST_ENTRY(__rpc_svcthread) st_link; /* all threads list */
282 LIST_ENTRY(__rpc_svcthread) st_ilink; /* idle threads list */
283 LIST_ENTRY(__rpc_svcthread) st_alink; /* application thread list */
285 LIST_HEAD(svcthread_list, __rpc_svcthread);
288 * In the kernel, we can't use global variables to store lists of
289 * transports etc. since otherwise we could not have two unrelated RPC
290 * services running, each on its own thread. We solve this by
291 * importing a tiny part of a Solaris kernel concept, SVCPOOL.
293 * A service pool contains a set of transports and service callbacks
294 * for a set of related RPC services. The pool handle should be passed
295 * when creating new transports etc. Future work may include extending
296 * this to support something similar to the Solaris multi-threaded RPC
299 TAILQ_HEAD(svcxprt_list, __rpc_svcxprt);
301 SVCPOOL_INIT, /* svc_run not called yet */
302 SVCPOOL_ACTIVE, /* normal running state */
303 SVCPOOL_THREADWANTED, /* new service thread requested */
304 SVCPOOL_THREADSTARTING, /* new service thread started */
305 SVCPOOL_CLOSING /* svc_exit called */
307 typedef SVCTHREAD *pool_assign_fn(SVCTHREAD *, struct svc_req *);
308 typedef void pool_done_fn(SVCTHREAD *, struct svc_req *);
309 typedef struct __rpc_svcpool {
310 struct mtx sp_lock; /* protect the transport lists */
311 const char *sp_name; /* pool name (e.g. "nfsd", "NLM" */
312 enum svcpool_state sp_state; /* current pool state */
313 struct proc *sp_proc; /* process which is in svc_run */
314 struct svcxprt_list sp_xlist; /* all transports in the pool */
315 struct svcxprt_list sp_active; /* transports needing service */
316 struct svc_callout_list sp_callouts; /* (prog,vers)->dispatch list */
317 struct svcthread_list sp_threads; /* service threads */
318 struct svcthread_list sp_idlethreads; /* idle service threads */
319 int sp_minthreads; /* minimum service thread count */
320 int sp_maxthreads; /* maximum service thread count */
321 int sp_threadcount; /* current service thread count */
322 time_t sp_lastcreatetime; /* when we last started a thread */
323 time_t sp_lastidlecheck; /* when we last checked idle transports */
326 * Hooks to allow an application to control request to thread
329 pool_assign_fn *sp_assign;
330 pool_done_fn *sp_done;
333 * These variables are used to put an upper bound on the
334 * amount of memory used by RPC requests which are queued
335 * waiting for execution.
337 unsigned int sp_space_low;
338 unsigned int sp_space_high;
339 unsigned int sp_space_used;
340 unsigned int sp_space_used_highest;
341 bool_t sp_space_throttled;
342 int sp_space_throttle_count;
344 struct replay_cache *sp_rcache; /* optional replay cache */
345 struct sysctl_ctx_list sp_sysctl;
354 uint32_t rq_prog; /* service program number */
355 uint32_t rq_vers; /* service protocol version */
356 uint32_t rq_proc; /* the desired procedure */
357 struct opaque_auth rq_cred; /* raw creds from the wire */
358 void *rq_clntcred; /* read only cooked cred */
359 SVCXPRT *rq_xprt; /* associated transport */
363 * Approved way of getting address of caller
365 #define svc_getrpccaller(x) (&(x)->xp_rtaddr)
370 * Operations defined on an SVCXPRT handle
373 * struct rpc_msg *msg;
379 #define SVC_ACQUIRE(xprt) \
380 refcount_acquire(&(xprt)->xp_refs)
382 #define SVC_RELEASE(xprt) \
383 if (refcount_release(&(xprt)->xp_refs)) \
386 #define SVC_RECV(xprt, msg, addr, args) \
387 (*(xprt)->xp_ops->xp_recv)((xprt), (msg), (addr), (args))
389 #define SVC_STAT(xprt) \
390 (*(xprt)->xp_ops->xp_stat)(xprt)
392 #define SVC_REPLY(xprt, msg, addr, m) \
393 (*(xprt)->xp_ops->xp_reply) ((xprt), (msg), (addr), (m))
395 #define SVC_DESTROY(xprt) \
396 (*(xprt)->xp_ops->xp_destroy)(xprt)
398 #define SVC_CONTROL(xprt, rq, in) \
399 (*(xprt)->xp_ops->xp_control)((xprt), (rq), (in))
403 #define SVC_RECV(xprt, msg) \
404 (*(xprt)->xp_ops->xp_recv)((xprt), (msg))
405 #define svc_recv(xprt, msg) \
406 (*(xprt)->xp_ops->xp_recv)((xprt), (msg))
408 #define SVC_STAT(xprt) \
409 (*(xprt)->xp_ops->xp_stat)(xprt)
410 #define svc_stat(xprt) \
411 (*(xprt)->xp_ops->xp_stat)(xprt)
413 #define SVC_GETARGS(xprt, xargs, argsp) \
414 (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
415 #define svc_getargs(xprt, xargs, argsp) \
416 (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp))
418 #define SVC_REPLY(xprt, msg) \
419 (*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
420 #define svc_reply(xprt, msg) \
421 (*(xprt)->xp_ops->xp_reply) ((xprt), (msg))
423 #define SVC_FREEARGS(xprt, xargs, argsp) \
424 (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
425 #define svc_freeargs(xprt, xargs, argsp) \
426 (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp))
428 #define SVC_DESTROY(xprt) \
429 (*(xprt)->xp_ops->xp_destroy)(xprt)
430 #define svc_destroy(xprt) \
431 (*(xprt)->xp_ops->xp_destroy)(xprt)
433 #define SVC_CONTROL(xprt, rq, in) \
434 (*(xprt)->xp_ops2->xp_control)((xprt), (rq), (in))
438 #define SVC_EXT(xprt) \
439 ((SVCXPRT_EXT *) xprt->xp_p3)
441 #define SVC_AUTH(xprt) \
442 (SVC_EXT(xprt)->xp_auth)
445 * Operations defined on an SVCAUTH handle
448 #define SVCAUTH_WRAP(auth, mp) \
449 ((auth)->svc_ah_ops->svc_ah_wrap(auth, mp))
450 #define SVCAUTH_UNWRAP(auth, mp) \
451 ((auth)->svc_ah_ops->svc_ah_unwrap(auth, mp))
452 #define SVCAUTH_RELEASE(auth) \
453 ((auth)->svc_ah_ops->svc_ah_release(auth))
455 #define SVCAUTH_WRAP(auth, xdrs, xfunc, xwhere) \
456 ((auth)->svc_ah_ops->svc_ah_wrap(auth, xdrs, xfunc, xwhere))
457 #define SVCAUTH_UNWRAP(auth, xdrs, xfunc, xwhere) \
458 ((auth)->svc_ah_ops->svc_ah_unwrap(auth, xdrs, xfunc, xwhere))
462 * Service registration
464 * svc_reg(xprt, prog, vers, dispatch, nconf)
465 * const SVCXPRT *xprt;
466 * const rpcprog_t prog;
467 * const rpcvers_t vers;
468 * const void (*dispatch)();
469 * const struct netconfig *nconf;
473 extern bool_t svc_reg(SVCXPRT *, const rpcprog_t, const rpcvers_t,
474 void (*)(struct svc_req *, SVCXPRT *),
475 const struct netconfig *);
479 * Service un-registration
481 * svc_unreg(prog, vers)
482 * const rpcprog_t prog;
483 * const rpcvers_t vers;
488 extern void svc_unreg(SVCPOOL *, const rpcprog_t, const rpcvers_t);
490 extern void svc_unreg(const rpcprog_t, const rpcvers_t);
495 * Transport registration.
497 * xprt_register(xprt)
501 extern void xprt_register(SVCXPRT *);
505 * Transport un-register
507 * xprt_unregister(xprt)
511 extern void xprt_unregister(SVCXPRT *);
512 extern void __xprt_unregister_unlocked(SVCXPRT *);
518 * Called when a transport has pending requests.
521 extern void xprt_active(SVCXPRT *);
522 extern void xprt_inactive(SVCXPRT *);
523 extern void xprt_inactive_locked(SVCXPRT *);
529 * When the service routine is called, it must first check to see if it
530 * knows about the procedure; if not, it should call svcerr_noproc
531 * and return. If so, it should deserialize its arguments via
532 * SVC_GETARGS (defined above). If the deserialization does not work,
533 * svcerr_decode should be called followed by a return. Successful
534 * decoding of the arguments should be followed the execution of the
535 * procedure's code and a call to svc_sendreply.
537 * Also, if the service refuses to execute the procedure due to too-
538 * weak authentication parameters, svcerr_weakauth should be called.
539 * Note: do not confuse access-control failure with weak authentication!
541 * NB: In pure implementations of rpc, the caller always waits for a reply
542 * msg. This message is sent when svc_sendreply is called.
543 * Therefore pure service implementations should always call
544 * svc_sendreply even if the function logically returns void; use
545 * xdr.h - xdr_void for the xdr routine. HOWEVER, tcp based rpc allows
546 * for the abuse of pure rpc via batched calling or pipelining. In the
547 * case of a batched call, svc_sendreply should NOT be called since
548 * this would send a return message, which is what batching tries to avoid.
549 * It is the service/protocol writer's responsibility to know which calls are
550 * batched and which are not. Warning: responding to batch calls may
551 * deadlock the caller and server processes!
556 extern bool_t svc_sendreply(struct svc_req *, xdrproc_t, void *);
557 extern bool_t svc_sendreply_mbuf(struct svc_req *, struct mbuf *);
558 extern void svcerr_decode(struct svc_req *);
559 extern void svcerr_weakauth(struct svc_req *);
560 extern void svcerr_noproc(struct svc_req *);
561 extern void svcerr_progvers(struct svc_req *, rpcvers_t, rpcvers_t);
562 extern void svcerr_auth(struct svc_req *, enum auth_stat);
563 extern void svcerr_noprog(struct svc_req *);
564 extern void svcerr_systemerr(struct svc_req *);
566 extern bool_t svc_sendreply(SVCXPRT *, xdrproc_t, void *);
567 extern void svcerr_decode(SVCXPRT *);
568 extern void svcerr_weakauth(SVCXPRT *);
569 extern void svcerr_noproc(SVCXPRT *);
570 extern void svcerr_progvers(SVCXPRT *, rpcvers_t, rpcvers_t);
571 extern void svcerr_auth(SVCXPRT *, enum auth_stat);
572 extern void svcerr_noprog(SVCXPRT *);
573 extern void svcerr_systemerr(SVCXPRT *);
575 extern int rpc_reg(rpcprog_t, rpcvers_t, rpcproc_t,
576 char *(*)(char *), xdrproc_t, xdrproc_t,
581 * Lowest level dispatching -OR- who owns this process anyway.
582 * Somebody has to wait for incoming requests and then call the correct
583 * service routine. The routine svc_run does infinite waiting; i.e.,
584 * svc_run never returns.
585 * Since another (co-existant) package may wish to selectively wait for
586 * incoming calls or other events outside of the rpc architecture, the
587 * routine svc_getreq is provided. It must be passed readfds, the
588 * "in-place" results of a select system call (see select, section 2).
593 * Global keeper of rpc service descriptors in use
594 * dynamic; must be inspected before each call to select
596 extern int svc_maxfd;
598 extern fd_set svc_fdset;
599 #define svc_fds svc_fdset.fds_bits[0] /* compatibility */
602 #endif /* def FD_SETSIZE */
606 * a small program implemented by the svc_rpc implementation itself;
607 * also see clnt.h for protocol numbers.
610 extern void rpctest_service(void);
614 extern SVCXPRT *svc_xprt_alloc(void);
615 extern void svc_xprt_free(SVCXPRT *);
617 extern void svc_getreq(int);
618 extern void svc_getreqset(fd_set *);
619 extern void svc_getreq_common(int);
621 extern void svc_getreq_poll(struct pollfd *, int);
622 extern void svc_run(void);
623 extern void svc_exit(void);
625 extern void svc_run(SVCPOOL *);
626 extern void svc_exit(SVCPOOL *);
627 extern bool_t svc_getargs(struct svc_req *, xdrproc_t, void *);
628 extern bool_t svc_freeargs(struct svc_req *, xdrproc_t, void *);
629 extern void svc_freereq(struct svc_req *);
635 * Socket to use on svcxxx_create call to get default socket
637 #define RPC_ANYSOCK -1
638 #define RPC_ANYFD RPC_ANYSOCK
641 * These are the existing service side transport implementations
649 * Create a new service pool.
651 extern SVCPOOL* svcpool_create(const char *name,
652 struct sysctl_oid_list *sysctl_base);
655 * Destroy a service pool, including all registered transports.
657 extern void svcpool_destroy(SVCPOOL *pool);
660 * Transport independent svc_create routine.
662 extern int svc_create(SVCPOOL *, void (*)(struct svc_req *, SVCXPRT *),
663 const rpcprog_t, const rpcvers_t, const char *);
665 * void (*dispatch)(); -- dispatch routine
666 * const rpcprog_t prognum; -- program number
667 * const rpcvers_t versnum; -- version number
668 * const char *nettype; -- network type
673 * Generic server creation routine. It takes a netconfig structure
674 * instead of a nettype.
677 extern SVCXPRT *svc_tp_create(SVCPOOL *, void (*)(struct svc_req *, SVCXPRT *),
678 const rpcprog_t, const rpcvers_t, const char *uaddr,
679 const struct netconfig *);
681 * void (*dispatch)(); -- dispatch routine
682 * const rpcprog_t prognum; -- program number
683 * const rpcvers_t versnum; -- version number
684 * const char *uaddr; -- universal address of service
685 * const struct netconfig *nconf; -- netconfig structure
688 extern SVCXPRT *svc_dg_create(SVCPOOL *, struct socket *,
689 const size_t, const size_t);
691 * struct socket *; -- open connection
692 * const size_t sendsize; -- max send size
693 * const size_t recvsize; -- max recv size
696 extern SVCXPRT *svc_vc_create(SVCPOOL *, struct socket *,
697 const size_t, const size_t);
699 * struct socket *; -- open connection
700 * const size_t sendsize; -- max send size
701 * const size_t recvsize; -- max recv size
705 * Generic TLI create routine
707 extern SVCXPRT *svc_tli_create(SVCPOOL *, struct socket *,
708 const struct netconfig *, const struct t_bind *, const size_t, const size_t);
710 * struct socket * so; -- connection end point
711 * const struct netconfig *nconf; -- netconfig structure for network
712 * const struct t_bind *bindaddr; -- local bind address
713 * const size_t sendsz; -- max sendsize
714 * const size_t recvsz; -- max recvsize
720 * Transport independent svc_create routine.
722 extern int svc_create(void (*)(struct svc_req *, SVCXPRT *),
723 const rpcprog_t, const rpcvers_t, const char *);
725 * void (*dispatch)(); -- dispatch routine
726 * const rpcprog_t prognum; -- program number
727 * const rpcvers_t versnum; -- version number
728 * const char *nettype; -- network type
733 * Generic server creation routine. It takes a netconfig structure
734 * instead of a nettype.
737 extern SVCXPRT *svc_tp_create(void (*)(struct svc_req *, SVCXPRT *),
738 const rpcprog_t, const rpcvers_t,
739 const struct netconfig *);
741 * void (*dispatch)(); -- dispatch routine
742 * const rpcprog_t prognum; -- program number
743 * const rpcvers_t versnum; -- version number
744 * const struct netconfig *nconf; -- netconfig structure
748 * Generic TLI create routine
750 extern SVCXPRT *svc_tli_create(const int, const struct netconfig *,
751 const struct t_bind *, const u_int,
754 * const int fd; -- connection end point
755 * const struct netconfig *nconf; -- netconfig structure for network
756 * const struct t_bind *bindaddr; -- local bind address
757 * const u_int sendsz; -- max sendsize
758 * const u_int recvsz; -- max recvsize
762 * Connectionless and connectionful create routines
765 extern SVCXPRT *svc_vc_create(const int, const u_int, const u_int);
767 * const int fd; -- open connection end point
768 * const u_int sendsize; -- max send size
769 * const u_int recvsize; -- max recv size
773 * Added for compatibility to old rpc 4.0. Obsoleted by svc_vc_create().
775 extern SVCXPRT *svcunix_create(int, u_int, u_int, char *);
777 extern SVCXPRT *svc_dg_create(const int, const u_int, const u_int);
779 * const int fd; -- open connection
780 * const u_int sendsize; -- max send size
781 * const u_int recvsize; -- max recv size
786 * the routine takes any *open* connection
787 * descriptor as its first input and is used for open connections.
789 extern SVCXPRT *svc_fd_create(const int, const u_int, const u_int);
791 * const int fd; -- open connection end point
792 * const u_int sendsize; -- max send size
793 * const u_int recvsize; -- max recv size
797 * Added for compatibility to old rpc 4.0. Obsoleted by svc_fd_create().
799 extern SVCXPRT *svcunixfd_create(int, u_int, u_int);
802 * Memory based rpc (for speed check and testing)
804 extern SVCXPRT *svc_raw_create(void);
807 * svc_dg_enable_cache() enables the cache on dg transports.
809 int svc_dg_enablecache(SVCXPRT *, const u_int);
811 int __rpc_get_local_uid(SVCXPRT *_transp, uid_t *_uid);
813 #endif /* !_KERNEL */
818 /* for backward compatibility */
819 #include <rpc/svc_soc.h>
822 #endif /* !_RPC_SVC_H */