1/* $NetBSD: clnt.h,v 1.14 2000/06/02 22:57:55 fvdl Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 2010, Oracle America, Inc. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions are met: 11 * - Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * - Neither the name of the "Oracle America, Inc." nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 * from: @(#)clnt.h 1.31 94/04/29 SMI 33 * from: @(#)clnt.h 2.1 88/07/29 4.0 RPCSRC 34 * $FreeBSD$ 35 */ 36 37/* 38 * clnt.h - Client side remote procedure call interface. 39 * 40 * Copyright (c) 1986-1991,1994-1999 by Sun Microsystems, Inc. 41 * All rights reserved. 42 */ 43 44#ifndef _RPC_CLNT_H_ 45#define _RPC_CLNT_H_ 46#include <rpc/clnt_stat.h> 47#include <sys/cdefs.h> 48#ifdef _KERNEL 49#include <sys/refcount.h> 50#include <rpc/netconfig.h> 51#else 52#include <netconfig.h> 53#endif 54#include <sys/un.h> 55 56/* 57 * Well-known IPV6 RPC broadcast address. 58 */ 59#define RPCB_MULTICAST_ADDR "ff02::202" 60 61/* 62 * the following errors are in general unrecoverable. The caller 63 * should give up rather than retry. 64 */ 65#define IS_UNRECOVERABLE_RPC(s) (((s) == RPC_AUTHERROR) || \ 66 ((s) == RPC_CANTENCODEARGS) || \ 67 ((s) == RPC_CANTDECODERES) || \ 68 ((s) == RPC_VERSMISMATCH) || \ 69 ((s) == RPC_PROCUNAVAIL) || \ 70 ((s) == RPC_PROGUNAVAIL) || \ 71 ((s) == RPC_PROGVERSMISMATCH) || \ 72 ((s) == RPC_CANTDECODEARGS)) 73 74/* 75 * Error info. 76 */ 77struct rpc_err { 78 enum clnt_stat re_status; 79 union { 80 int RE_errno; /* related system error */ 81 enum auth_stat RE_why; /* why the auth error occurred */ 82 struct { 83 rpcvers_t low; /* lowest version supported */ 84 rpcvers_t high; /* highest version supported */ 85 } RE_vers; 86 struct { /* maybe meaningful if RPC_FAILED */ 87 int32_t s1; 88 int32_t s2; 89 } RE_lb; /* life boot & debugging only */ 90 } ru; 91#define re_errno ru.RE_errno 92#define re_why ru.RE_why 93#define re_vers ru.RE_vers 94#define re_lb ru.RE_lb 95}; 96 97#ifdef _KERNEL 98/* 99 * Functions of this type may be used to receive notification when RPC 100 * calls have to be re-transmitted etc. 101 */ 102typedef void rpc_feedback(int cmd, int procnum, void *); 103 104/* 105 * Timers used for the pseudo-transport protocol when using datagrams 106 */ 107struct rpc_timers { 108 u_short rt_srtt; /* smoothed round-trip time */ 109 u_short rt_deviate; /* estimated deviation */ 110 u_long rt_rtxcur; /* current (backed-off) rto */ 111}; 112 113/* 114 * A structure used with CLNT_CALL_EXT to pass extra information used 115 * while processing an RPC call. 116 */ 117struct rpc_callextra { 118 AUTH *rc_auth; /* auth handle to use for this call */ 119 rpc_feedback *rc_feedback; /* callback for retransmits etc. */ 120 void *rc_feedback_arg; /* argument for callback */ 121 struct rpc_timers *rc_timers; /* optional RTT timers */ 122 struct rpc_err rc_err; /* detailed call status */ 123}; 124#endif 125 126/* 127 * Client rpc handle. 128 * Created by individual implementations 129 * Client is responsible for initializing auth, see e.g. auth_none.c. 130 */ 131typedef struct __rpc_client { 132#ifdef _KERNEL 133 volatile u_int cl_refs; /* reference count */ 134 AUTH *cl_auth; /* authenticator */ 135 struct clnt_ops { 136 /* call remote procedure */ 137 enum clnt_stat (*cl_call)(struct __rpc_client *, 138 struct rpc_callextra *, rpcproc_t, 139 struct mbuf *, struct mbuf **, struct timeval); 140 /* abort a call */ 141 void (*cl_abort)(struct __rpc_client *); 142 /* get specific error code */ 143 void (*cl_geterr)(struct __rpc_client *, 144 struct rpc_err *); 145 /* frees results */ 146 bool_t (*cl_freeres)(struct __rpc_client *, 147 xdrproc_t, void *); 148 /* close the connection and terminate pending RPCs */ 149 void (*cl_close)(struct __rpc_client *); 150 /* destroy this structure */ 151 void (*cl_destroy)(struct __rpc_client *); 152 /* the ioctl() of rpc */ 153 bool_t (*cl_control)(struct __rpc_client *, u_int, 154 void *); 155 } *cl_ops; 156#else 157 AUTH *cl_auth; /* authenticator */ 158 struct clnt_ops { 159 /* call remote procedure */ 160 enum clnt_stat (*cl_call)(struct __rpc_client *, 161 rpcproc_t, xdrproc_t, void *, xdrproc_t, 162 void *, struct timeval); 163 /* abort a call */ 164 void (*cl_abort)(struct __rpc_client *); 165 /* get specific error code */ 166 void (*cl_geterr)(struct __rpc_client *, 167 struct rpc_err *); 168 /* frees results */ 169 bool_t (*cl_freeres)(struct __rpc_client *, 170 xdrproc_t, void *); 171 /* destroy this structure */ 172 void (*cl_destroy)(struct __rpc_client *); 173 /* the ioctl() of rpc */ 174 bool_t (*cl_control)(struct __rpc_client *, u_int, 175 void *); 176 } *cl_ops; 177#endif 178 void *cl_private; /* private stuff */ 179 char *cl_netid; /* network token */ 180 char *cl_tp; /* device name */ 181} CLIENT; 182 183/* 184 * Feedback values used for possible congestion and rate control 185 */ 186#define FEEDBACK_OK 1 /* no retransmits */ 187#define FEEDBACK_REXMIT1 2 /* first retransmit */ 188#define FEEDBACK_REXMIT2 3 /* second and subsequent retransmit */ 189#define FEEDBACK_RECONNECT 4 /* client reconnect */ 190 191/* Used to set version of portmapper used in broadcast */ 192 193#define CLCR_SET_LOWVERS 3 194#define CLCR_GET_LOWVERS 4 195 196#define RPCSMALLMSGSIZE 400 /* a more reasonable packet size */ 197 198/* 199 * client side rpc interface ops 200 * 201 * Parameter types are: 202 * 203 */ 204 205#ifdef _KERNEL 206#define CLNT_ACQUIRE(rh) \ 207 refcount_acquire(&(rh)->cl_refs) 208#define CLNT_RELEASE(rh) \ 209 if (refcount_release(&(rh)->cl_refs)) \ 210 CLNT_DESTROY(rh) 211 212/* 213 * void 214 * CLNT_CLOSE(rh); 215 * CLIENT *rh; 216 */ 217#define CLNT_CLOSE(rh) ((*(rh)->cl_ops->cl_close)(rh)) 218 219enum clnt_stat clnt_call_private(CLIENT *, struct rpc_callextra *, rpcproc_t, 220 xdrproc_t, void *, xdrproc_t, void *, struct timeval); 221 222/* 223 * enum clnt_stat 224 * CLNT_CALL_MBUF(rh, ext, proc, mreq, mrepp, timeout) 225 * CLIENT *rh; 226 * struct rpc_callextra *ext; 227 * rpcproc_t proc; 228 * struct mbuf *mreq; 229 * struct mbuf **mrepp; 230 * struct timeval timeout; 231 * 232 * Call arguments in mreq which is consumed by the call (even if there 233 * is an error). Results returned in *mrepp. 234 */ 235#define CLNT_CALL_MBUF(rh, ext, proc, mreq, mrepp, secs) \ 236 ((*(rh)->cl_ops->cl_call)(rh, ext, proc, mreq, mrepp, secs)) 237 238/* 239 * enum clnt_stat 240 * CLNT_CALL_EXT(rh, ext, proc, xargs, argsp, xres, resp, timeout) 241 * CLIENT *rh; 242 * struct rpc_callextra *ext; 243 * rpcproc_t proc; 244 * xdrproc_t xargs; 245 * void *argsp; 246 * xdrproc_t xres; 247 * void *resp; 248 * struct timeval timeout; 249 */ 250#define CLNT_CALL_EXT(rh, ext, proc, xargs, argsp, xres, resp, secs) \ 251 clnt_call_private(rh, ext, proc, xargs, \ 252 argsp, xres, resp, secs) 253#endif 254 255/* 256 * enum clnt_stat 257 * CLNT_CALL(rh, proc, xargs, argsp, xres, resp, timeout) 258 * CLIENT *rh; 259 * rpcproc_t proc; 260 * xdrproc_t xargs; 261 * void *argsp; 262 * xdrproc_t xres; 263 * void *resp; 264 * struct timeval timeout; 265 */ 266#ifdef _KERNEL 267#define CLNT_CALL(rh, proc, xargs, argsp, xres, resp, secs) \ 268 clnt_call_private(rh, NULL, proc, xargs, \ 269 argsp, xres, resp, secs) 270#define clnt_call(rh, proc, xargs, argsp, xres, resp, secs) \ 271 clnt_call_private(rh, NULL, proc, xargs, \ 272 argsp, xres, resp, secs) 273#else 274#define CLNT_CALL(rh, proc, xargs, argsp, xres, resp, secs) \ 275 ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, \ 276 argsp, xres, resp, secs)) 277#define clnt_call(rh, proc, xargs, argsp, xres, resp, secs) \ 278 ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, \ 279 argsp, xres, resp, secs)) 280#endif 281 282/* 283 * void 284 * CLNT_ABORT(rh); 285 * CLIENT *rh; 286 */ 287#define CLNT_ABORT(rh) ((*(rh)->cl_ops->cl_abort)(rh)) 288#define clnt_abort(rh) ((*(rh)->cl_ops->cl_abort)(rh)) 289 290/* 291 * struct rpc_err 292 * CLNT_GETERR(rh); 293 * CLIENT *rh; 294 */ 295#define CLNT_GETERR(rh,errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp)) 296#define clnt_geterr(rh,errp) ((*(rh)->cl_ops->cl_geterr)(rh, errp)) 297 298 299/* 300 * bool_t 301 * CLNT_FREERES(rh, xres, resp); 302 * CLIENT *rh; 303 * xdrproc_t xres; 304 * void *resp; 305 */ 306#define CLNT_FREERES(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp)) 307#define clnt_freeres(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp)) 308 309/* 310 * bool_t 311 * CLNT_CONTROL(cl, request, info) 312 * CLIENT *cl; 313 * u_int request; 314 * char *info; 315 */ 316#define CLNT_CONTROL(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in)) 317#define clnt_control(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in)) 318 319/* 320 * control operations that apply to both udp and tcp transports 321 */ 322#define CLSET_TIMEOUT 1 /* set timeout (timeval) */ 323#define CLGET_TIMEOUT 2 /* get timeout (timeval) */ 324#define CLGET_SERVER_ADDR 3 /* get server's address (sockaddr) */ 325#define CLGET_FD 6 /* get connections file descriptor */ 326#define CLGET_SVC_ADDR 7 /* get server's address (netbuf) */ 327#define CLSET_FD_CLOSE 8 /* close fd while clnt_destroy */ 328#define CLSET_FD_NCLOSE 9 /* Do not close fd while clnt_destroy */ 329#define CLGET_XID 10 /* Get xid */ 330#define CLSET_XID 11 /* Set xid */ 331#define CLGET_VERS 12 /* Get version number */ 332#define CLSET_VERS 13 /* Set version number */ 333#define CLGET_PROG 14 /* Get program number */ 334#define CLSET_PROG 15 /* Set program number */ 335#define CLSET_SVC_ADDR 16 /* get server's address (netbuf) */ 336#define CLSET_PUSH_TIMOD 17 /* push timod if not already present */ 337#define CLSET_POP_TIMOD 18 /* pop timod */ 338/* 339 * Connectionless only control operations 340 */ 341#define CLSET_RETRY_TIMEOUT 4 /* set retry timeout (timeval) */ 342#define CLGET_RETRY_TIMEOUT 5 /* get retry timeout (timeval) */ 343#define CLSET_ASYNC 19 344#define CLSET_CONNECT 20 /* Use connect() for UDP. (int) */ 345 346#ifdef _KERNEL 347/* 348 * Kernel control operations. The default msleep string is "rpcrecv", 349 * and sleeps are non-interruptible by default. 350 */ 351#define CLSET_WAITCHAN 21 /* set string to use in msleep call */ 352#define CLGET_WAITCHAN 22 /* get string used in msleep call */ 353#define CLSET_INTERRUPTIBLE 23 /* set interruptible flag */ 354#define CLGET_INTERRUPTIBLE 24 /* set interruptible flag */ 355#define CLSET_RETRIES 25 /* set retry count for reconnect */ 356#define CLGET_RETRIES 26 /* get retry count for reconnect */ 357#define CLSET_PRIVPORT 27 /* set privileged source port flag */ 358#define CLGET_PRIVPORT 28 /* get privileged source port flag */ 359#define CLSET_BACKCHANNEL 29 /* set backchannel for socket */ 360/* Structure used as the argument for CLSET_RECONUPCALL. */ 361struct rpc_reconupcall { 362 void (*call)(CLIENT *, void *, struct ucred *); 363 void *arg; 364}; 365#define CLSET_RECONUPCALL 30 /* Reconnect upcall */ 366#endif 367 368 369/* 370 * void 371 * CLNT_DESTROY(rh); 372 * CLIENT *rh; 373 */ 374#define CLNT_DESTROY(rh) ((*(rh)->cl_ops->cl_destroy)(rh)) 375#define clnt_destroy(rh) ((*(rh)->cl_ops->cl_destroy)(rh)) 376 377 378/* 379 * RPCTEST is a test program which is accessible on every rpc 380 * transport/port. It is used for testing, performance evaluation, 381 * and network administration. 382 */ 383 384#define RPCTEST_PROGRAM ((rpcprog_t)1) 385#define RPCTEST_VERSION ((rpcvers_t)1) 386#define RPCTEST_NULL_PROC ((rpcproc_t)2) 387#define RPCTEST_NULL_BATCH_PROC ((rpcproc_t)3) 388 389/* 390 * By convention, procedure 0 takes null arguments and returns them 391 */ 392 393#define NULLPROC ((rpcproc_t)0) 394 395/* 396 * Below are the client handle creation routines for the various 397 * implementations of client side rpc. They can return NULL if a 398 * creation failure occurs. 399 */ 400 401/* 402 * Generic client creation routine. Supported protocols are those that 403 * belong to the nettype namespace (/etc/netconfig). 404 */ 405__BEGIN_DECLS 406#ifdef _KERNEL 407 408/* 409 * struct socket *so; -- socket 410 * struct sockaddr *svcaddr; -- servers address 411 * rpcprog_t prog; -- program number 412 * rpcvers_t vers; -- version number 413 * size_t sendsz; -- buffer recv size 414 * size_t recvsz; -- buffer send size 415 */ 416extern CLIENT *clnt_dg_create(struct socket *so, 417 struct sockaddr *svcaddr, rpcprog_t program, rpcvers_t version, 418 size_t sendsz, size_t recvsz); 419 420/* 421 * struct socket *so; -- socket 422 * struct sockaddr *svcaddr; -- servers address 423 * rpcprog_t prog; -- program number 424 * rpcvers_t vers; -- version number 425 * size_t sendsz; -- buffer recv size 426 * size_t recvsz; -- buffer send size 427 * int intrflag; -- is it interruptible 428 */ 429extern CLIENT *clnt_vc_create(struct socket *so, 430 struct sockaddr *svcaddr, rpcprog_t program, rpcvers_t version, 431 size_t sendsz, size_t recvsz, int intrflag); 432 433/* 434 * struct netconfig *nconf; -- network type 435 * struct sockaddr *svcaddr; -- servers address 436 * rpcprog_t prog; -- program number 437 * rpcvers_t vers; -- version number 438 * size_t sendsz; -- buffer recv size 439 * size_t recvsz; -- buffer send size 440 */ 441extern CLIENT *clnt_reconnect_create(struct netconfig *nconf, 442 struct sockaddr *svcaddr, rpcprog_t program, rpcvers_t version, 443 size_t sendsz, size_t recvsz); 444 445#else 446 447extern CLIENT *clnt_create(const char *, const rpcprog_t, const rpcvers_t, 448 const char *); 449/* 450 * 451 * const char *hostname; -- hostname 452 * const rpcprog_t prog; -- program number 453 * const rpcvers_t vers; -- version number 454 * const char *nettype; -- network type 455 */ 456 457 /* 458 * Generic client creation routine. Just like clnt_create(), except 459 * it takes an additional timeout parameter. 460 */ 461extern CLIENT * clnt_create_timed(const char *, const rpcprog_t, 462 const rpcvers_t, const char *, const struct timeval *); 463/* 464 * 465 * const char *hostname; -- hostname 466 * const rpcprog_t prog; -- program number 467 * const rpcvers_t vers; -- version number 468 * const char *nettype; -- network type 469 * const struct timeval *tp; -- timeout 470 */ 471 472/* 473 * Generic client creation routine. Supported protocols are which belong 474 * to the nettype name space. 475 */ 476extern CLIENT *clnt_create_vers(const char *, const rpcprog_t, rpcvers_t *, 477 const rpcvers_t, const rpcvers_t, 478 const char *); 479/* 480 * const char *host; -- hostname 481 * const rpcprog_t prog; -- program number 482 * rpcvers_t *vers_out; -- servers highest available version 483 * const rpcvers_t vers_low; -- low version number 484 * const rpcvers_t vers_high; -- high version number 485 * const char *nettype; -- network type 486 */ 487 488/* 489 * Generic client creation routine. Supported protocols are which belong 490 * to the nettype name space. 491 */ 492extern CLIENT * clnt_create_vers_timed(const char *, const rpcprog_t, 493 rpcvers_t *, const rpcvers_t, const rpcvers_t, const char *, 494 const struct timeval *); 495/* 496 * const char *host; -- hostname 497 * const rpcprog_t prog; -- program number 498 * rpcvers_t *vers_out; -- servers highest available version 499 * const rpcvers_t vers_low; -- low version number 500 * const rpcvers_t vers_high; -- high version number 501 * const char *nettype; -- network type 502 * const struct timeval *tp -- timeout 503 */ 504 505/* 506 * Generic client creation routine. It takes a netconfig structure 507 * instead of nettype 508 */ 509extern CLIENT *clnt_tp_create(const char *, const rpcprog_t, 510 const rpcvers_t, const struct netconfig *); 511/* 512 * const char *hostname; -- hostname 513 * const rpcprog_t prog; -- program number 514 * const rpcvers_t vers; -- version number 515 * const struct netconfig *netconf; -- network config structure 516 */ 517 518/* 519 * Generic client creation routine. Just like clnt_tp_create(), except 520 * it takes an additional timeout parameter. 521 */ 522extern CLIENT * clnt_tp_create_timed(const char *, const rpcprog_t, 523 const rpcvers_t, const struct netconfig *, const struct timeval *); 524/* 525 * const char *hostname; -- hostname 526 * const rpcprog_t prog; -- program number 527 * const rpcvers_t vers; -- version number 528 * const struct netconfig *netconf; -- network config structure 529 * const struct timeval *tp -- timeout 530 */ 531 532/* 533 * Generic TLI create routine. Only provided for compatibility. 534 */ 535 536extern CLIENT *clnt_tli_create(const int, const struct netconfig *, 537 struct netbuf *, const rpcprog_t, 538 const rpcvers_t, const u_int, const u_int); 539/* 540 * const int fd; -- fd 541 * const struct netconfig *nconf; -- netconfig structure 542 * struct netbuf *svcaddr; -- servers address 543 * const u_long prog; -- program number 544 * const u_long vers; -- version number 545 * const u_int sendsz; -- send size 546 * const u_int recvsz; -- recv size 547 */ 548 549/* 550 * Low level clnt create routine for connectionful transports, e.g. tcp. 551 */ 552extern CLIENT *clnt_vc_create(const int, const struct netbuf *, 553 const rpcprog_t, const rpcvers_t, 554 u_int, u_int); 555/* 556 * Added for compatibility to old rpc 4.0. Obsoleted by clnt_vc_create(). 557 */ 558extern CLIENT *clntunix_create(struct sockaddr_un *, 559 u_long, u_long, int *, u_int, u_int); 560/* 561 * const int fd; -- open file descriptor 562 * const struct netbuf *svcaddr; -- servers address 563 * const rpcprog_t prog; -- program number 564 * const rpcvers_t vers; -- version number 565 * const u_int sendsz; -- buffer recv size 566 * const u_int recvsz; -- buffer send size 567 */ 568 569/* 570 * Low level clnt create routine for connectionless transports, e.g. udp. 571 */ 572extern CLIENT *clnt_dg_create(const int, const struct netbuf *, 573 const rpcprog_t, const rpcvers_t, 574 const u_int, const u_int); 575/* 576 * const int fd; -- open file descriptor 577 * const struct netbuf *svcaddr; -- servers address 578 * const rpcprog_t program; -- program number 579 * const rpcvers_t version; -- version number 580 * const u_int sendsz; -- buffer recv size 581 * const u_int recvsz; -- buffer send size 582 */ 583 584/* 585 * Memory based rpc (for speed check and testing) 586 * CLIENT * 587 * clnt_raw_create(prog, vers) 588 * u_long prog; 589 * u_long vers; 590 */ 591extern CLIENT *clnt_raw_create(rpcprog_t, rpcvers_t); 592#endif 593 594__END_DECLS 595 596 597/* 598 * Print why creation failed 599 */ 600__BEGIN_DECLS 601extern void clnt_pcreateerror(const char *); /* stderr */ 602extern char *clnt_spcreateerror(const char *); /* string */ 603__END_DECLS 604 605/* 606 * Like clnt_perror(), but is more verbose in its output 607 */ 608__BEGIN_DECLS 609extern void clnt_perrno(enum clnt_stat); /* stderr */ 610extern char *clnt_sperrno(enum clnt_stat); /* string */ 611__END_DECLS 612 613/* 614 * Print an English error message, given the client error code 615 */ 616__BEGIN_DECLS 617extern void clnt_perror(CLIENT *, const char *); /* stderr */ 618extern char *clnt_sperror(CLIENT *, const char *); /* string */ 619__END_DECLS 620 621 622/* 623 * If a creation fails, the following allows the user to figure out why. 624 */ 625struct rpc_createerr { 626 enum clnt_stat cf_stat; 627 struct rpc_err cf_error; /* useful when cf_stat == RPC_PMAPFAILURE */ 628}; 629 630#ifdef _KERNEL 631extern struct rpc_createerr rpc_createerr; 632#else 633__BEGIN_DECLS 634extern struct rpc_createerr *__rpc_createerr(void); 635__END_DECLS 636#define rpc_createerr (*(__rpc_createerr())) 637#endif 638 639#ifndef _KERNEL 640/* 641 * The simplified interface: 642 * enum clnt_stat 643 * rpc_call(host, prognum, versnum, procnum, inproc, in, outproc, out, nettype) 644 * const char *host; 645 * const rpcprog_t prognum; 646 * const rpcvers_t versnum; 647 * const rpcproc_t procnum; 648 * const xdrproc_t inproc, outproc; 649 * const char *in; 650 * char *out; 651 * const char *nettype; 652 */ 653__BEGIN_DECLS 654extern enum clnt_stat rpc_call(const char *, const rpcprog_t, 655 const rpcvers_t, const rpcproc_t, 656 const xdrproc_t, const char *, 657 const xdrproc_t, char *, const char *); 658__END_DECLS 659 660/* 661 * RPC broadcast interface 662 * The call is broadcasted to all locally connected nets. 663 * 664 * extern enum clnt_stat 665 * rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, 666 * eachresult, nettype) 667 * const rpcprog_t prog; -- program number 668 * const rpcvers_t vers; -- version number 669 * const rpcproc_t proc; -- procedure number 670 * const xdrproc_t xargs; -- xdr routine for args 671 * caddr_t argsp; -- pointer to args 672 * const xdrproc_t xresults; -- xdr routine for results 673 * caddr_t resultsp; -- pointer to results 674 * const resultproc_t eachresult; -- call with each result 675 * const char *nettype; -- Transport type 676 * 677 * For each valid response received, the procedure eachresult is called. 678 * Its form is: 679 * done = eachresult(resp, raddr, nconf) 680 * bool_t done; 681 * caddr_t resp; 682 * struct netbuf *raddr; 683 * struct netconfig *nconf; 684 * where resp points to the results of the call and raddr is the 685 * address if the responder to the broadcast. nconf is the transport 686 * on which the response was received. 687 * 688 * extern enum clnt_stat 689 * rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp, 690 * eachresult, inittime, waittime, nettype) 691 * const rpcprog_t prog; -- program number 692 * const rpcvers_t vers; -- version number 693 * const rpcproc_t proc; -- procedure number 694 * const xdrproc_t xargs; -- xdr routine for args 695 * caddr_t argsp; -- pointer to args 696 * const xdrproc_t xresults; -- xdr routine for results 697 * caddr_t resultsp; -- pointer to results 698 * const resultproc_t eachresult; -- call with each result 699 * const int inittime; -- how long to wait initially 700 * const int waittime; -- maximum time to wait 701 * const char *nettype; -- Transport type 702 */ 703 704typedef bool_t (*resultproc_t)(caddr_t, ...); 705 706__BEGIN_DECLS 707extern enum clnt_stat rpc_broadcast(const rpcprog_t, const rpcvers_t, 708 const rpcproc_t, const xdrproc_t, 709 caddr_t, const xdrproc_t, caddr_t, 710 const resultproc_t, const char *); 711extern enum clnt_stat rpc_broadcast_exp(const rpcprog_t, const rpcvers_t, 712 const rpcproc_t, const xdrproc_t, 713 caddr_t, const xdrproc_t, caddr_t, 714 const resultproc_t, const int, 715 const int, const char *); 716__END_DECLS 717 718/* For backward compatibility */ 719#include <rpc/clnt_soc.h> 720#endif 721 722#endif /* !_RPC_CLNT_H_ */ 723