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 */ 77 struct 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 */ 102 typedef void rpc_feedback(int cmd, int procnum, void *); 103 104 /* 105 * Timers used for the pseudo-transport protocol when using datagrams 106 */ 107 struct 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 */ 117 struct 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 */ 131 typedef 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)) 218 219 enum 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 #endif 361 362 363 /* 364 * void 365 * CLNT_DESTROY(rh); 366 * CLIENT *rh; 367 */ 368 #define CLNT_DESTROY(rh) ((*(rh)->cl_ops->cl_destroy)(rh)) 369 #define clnt_destroy(rh) ((*(rh)->cl_ops->cl_destroy)(rh)) 370 371 372 /* 373 * RPCTEST is a test program which is accessible on every rpc 374 * transport/port. It is used for testing, performance evaluation, 375 * and network administration. 376 */ 377 378 #define RPCTEST_PROGRAM ((rpcprog_t)1) 379 #define RPCTEST_VERSION ((rpcvers_t)1) 380 #define RPCTEST_NULL_PROC ((rpcproc_t)2) 381 #define RPCTEST_NULL_BATCH_PROC ((rpcproc_t)3) 382 383 /* 384 * By convention, procedure 0 takes null arguments and returns them 385 */ 386 387 #define NULLPROC ((rpcproc_t)0) 388 389 /* 390 * Below are the client handle creation routines for the various 391 * implementations of client side rpc. They can return NULL if a 392 * creation failure occurs. 393 */ 394 395 /* 396 * Generic client creation routine. Supported protocols are those that 397 * belong to the nettype namespace (/etc/netconfig). 398 */ 399 __BEGIN_DECLS 400 #ifdef _KERNEL 401 402 /* 403 * struct socket *so; -- socket 404 * struct sockaddr *svcaddr; -- servers address 405 * rpcprog_t prog; -- program number 406 * rpcvers_t vers; -- version number 407 * size_t sendsz; -- buffer recv size 408 * size_t recvsz; -- buffer send size 409 */ 410 extern CLIENT *clnt_dg_create(struct socket *so, 411 struct sockaddr *svcaddr, rpcprog_t program, rpcvers_t version, 412 size_t sendsz, size_t recvsz); 413 414 /* 415 * struct socket *so; -- socket 416 * struct sockaddr *svcaddr; -- servers address 417 * rpcprog_t prog; -- program number 418 * rpcvers_t vers; -- version number 419 * size_t sendsz; -- buffer recv size 420 * size_t recvsz; -- buffer send size 421 * int intrflag; -- is it interruptible 422 */ 423 extern CLIENT *clnt_vc_create(struct socket *so, 424 struct sockaddr *svcaddr, rpcprog_t program, rpcvers_t version, 425 size_t sendsz, size_t recvsz, int intrflag); 426 427 /* 428 * struct netconfig *nconf; -- network type 429 * struct sockaddr *svcaddr; -- servers address 430 * rpcprog_t prog; -- program number 431 * rpcvers_t vers; -- version number 432 * size_t sendsz; -- buffer recv size 433 * size_t recvsz; -- buffer send size 434 */ 435 extern CLIENT *clnt_reconnect_create(struct netconfig *nconf, 436 struct sockaddr *svcaddr, rpcprog_t program, rpcvers_t version, 437 size_t sendsz, size_t recvsz); 438 439 #else 440 441 extern CLIENT *clnt_create(const char *, const rpcprog_t, const rpcvers_t, 442 const char *); 443 /* 444 * 445 * const char *hostname; -- hostname 446 * const rpcprog_t prog; -- program number 447 * const rpcvers_t vers; -- version number 448 * const char *nettype; -- network type 449 */ 450 451 /* 452 * Generic client creation routine. Just like clnt_create(), except 453 * it takes an additional timeout parameter. 454 */ 455 extern CLIENT * clnt_create_timed(const char *, const rpcprog_t, 456 const rpcvers_t, const char *, const struct timeval *); 457 /* 458 * 459 * const char *hostname; -- hostname 460 * const rpcprog_t prog; -- program number 461 * const rpcvers_t vers; -- version number 462 * const char *nettype; -- network type 463 * const struct timeval *tp; -- timeout 464 */ 465 466 /* 467 * Generic client creation routine. Supported protocols are which belong 468 * to the nettype name space. 469 */ 470 extern CLIENT *clnt_create_vers(const char *, const rpcprog_t, rpcvers_t *, 471 const rpcvers_t, const rpcvers_t, 472 const char *); 473 /* 474 * const char *host; -- hostname 475 * const rpcprog_t prog; -- program number 476 * rpcvers_t *vers_out; -- servers highest available version 477 * const rpcvers_t vers_low; -- low version number 478 * const rpcvers_t vers_high; -- high version number 479 * const char *nettype; -- network type 480 */ 481 482 /* 483 * Generic client creation routine. Supported protocols are which belong 484 * to the nettype name space. 485 */ 486 extern CLIENT * clnt_create_vers_timed(const char *, const rpcprog_t, 487 rpcvers_t *, const rpcvers_t, const rpcvers_t, const char *, 488 const struct timeval *); 489 /* 490 * const char *host; -- hostname 491 * const rpcprog_t prog; -- program number 492 * rpcvers_t *vers_out; -- servers highest available version 493 * const rpcvers_t vers_low; -- low version number 494 * const rpcvers_t vers_high; -- high version number 495 * const char *nettype; -- network type 496 * const struct timeval *tp -- timeout 497 */ 498 499 /* 500 * Generic client creation routine. It takes a netconfig structure 501 * instead of nettype 502 */ 503 extern CLIENT *clnt_tp_create(const char *, const rpcprog_t, 504 const rpcvers_t, const struct netconfig *); 505 /* 506 * const char *hostname; -- hostname 507 * const rpcprog_t prog; -- program number 508 * const rpcvers_t vers; -- version number 509 * const struct netconfig *netconf; -- network config structure 510 */ 511 512 /* 513 * Generic client creation routine. Just like clnt_tp_create(), except 514 * it takes an additional timeout parameter. 515 */ 516 extern CLIENT * clnt_tp_create_timed(const char *, const rpcprog_t, 517 const rpcvers_t, const struct netconfig *, const struct timeval *); 518 /* 519 * const char *hostname; -- hostname 520 * const rpcprog_t prog; -- program number 521 * const rpcvers_t vers; -- version number 522 * const struct netconfig *netconf; -- network config structure 523 * const struct timeval *tp -- timeout 524 */ 525 526 /* 527 * Generic TLI create routine. Only provided for compatibility. 528 */ 529 530 extern CLIENT *clnt_tli_create(const int, const struct netconfig *, 531 struct netbuf *, const rpcprog_t, 532 const rpcvers_t, const u_int, const u_int); 533 /* 534 * const int fd; -- fd 535 * const struct netconfig *nconf; -- netconfig structure 536 * struct netbuf *svcaddr; -- servers address 537 * const u_long prog; -- program number 538 * const u_long vers; -- version number 539 * const u_int sendsz; -- send size 540 * const u_int recvsz; -- recv size 541 */ 542 543 /* 544 * Low level clnt create routine for connectionful transports, e.g. tcp. 545 */ 546 extern CLIENT *clnt_vc_create(const int, const struct netbuf *, 547 const rpcprog_t, const rpcvers_t, 548 u_int, u_int); 549 /* 550 * Added for compatibility to old rpc 4.0. Obsoleted by clnt_vc_create(). 551 */ 552 extern CLIENT *clntunix_create(struct sockaddr_un *, 553 u_long, u_long, int *, u_int, u_int); 554 /* 555 * const int fd; -- open file descriptor 556 * const struct netbuf *svcaddr; -- servers address 557 * const rpcprog_t prog; -- program number 558 * const rpcvers_t vers; -- version number 559 * const u_int sendsz; -- buffer recv size 560 * const u_int recvsz; -- buffer send size 561 */ 562 563 /* 564 * Low level clnt create routine for connectionless transports, e.g. udp. 565 */ 566 extern CLIENT *clnt_dg_create(const int, const struct netbuf *, 567 const rpcprog_t, const rpcvers_t, 568 const u_int, const u_int); 569 /* 570 * const int fd; -- open file descriptor 571 * const struct netbuf *svcaddr; -- servers address 572 * const rpcprog_t program; -- program number 573 * const rpcvers_t version; -- version number 574 * const u_int sendsz; -- buffer recv size 575 * const u_int recvsz; -- buffer send size 576 */ 577 578 /* 579 * Memory based rpc (for speed check and testing) 580 * CLIENT * 581 * clnt_raw_create(prog, vers) 582 * u_long prog; 583 * u_long vers; 584 */ 585 extern CLIENT *clnt_raw_create(rpcprog_t, rpcvers_t); 586 #endif 587 588 __END_DECLS 589 590 591 /* 592 * Print why creation failed 593 */ 594 __BEGIN_DECLS 595 extern void clnt_pcreateerror(const char *); /* stderr */ 596 extern char *clnt_spcreateerror(const char *); /* string */ 597 __END_DECLS 598 599 /* 600 * Like clnt_perror(), but is more verbose in its output 601 */ 602 __BEGIN_DECLS 603 extern void clnt_perrno(enum clnt_stat); /* stderr */ 604 extern char *clnt_sperrno(enum clnt_stat); /* string */ 605 __END_DECLS 606 607 /* 608 * Print an English error message, given the client error code 609 */ 610 __BEGIN_DECLS 611 extern void clnt_perror(CLIENT *, const char *); /* stderr */ 612 extern char *clnt_sperror(CLIENT *, const char *); /* string */ 613 __END_DECLS 614 615 616 /* 617 * If a creation fails, the following allows the user to figure out why. 618 */ 619 struct rpc_createerr { 620 enum clnt_stat cf_stat; 621 struct rpc_err cf_error; /* useful when cf_stat == RPC_PMAPFAILURE */ 622 }; 623 624 #ifdef _KERNEL 625 extern struct rpc_createerr rpc_createerr; 626 #else 627 __BEGIN_DECLS 628 extern struct rpc_createerr *__rpc_createerr(void); 629 __END_DECLS 630 #define rpc_createerr (*(__rpc_createerr())) 631 #endif 632 633 #ifndef _KERNEL 634 /* 635 * The simplified interface: 636 * enum clnt_stat 637 * rpc_call(host, prognum, versnum, procnum, inproc, in, outproc, out, nettype) 638 * const char *host; 639 * const rpcprog_t prognum; 640 * const rpcvers_t versnum; 641 * const rpcproc_t procnum; 642 * const xdrproc_t inproc, outproc; 643 * const char *in; 644 * char *out; 645 * const char *nettype; 646 */ 647 __BEGIN_DECLS 648 extern enum clnt_stat rpc_call(const char *, const rpcprog_t, 649 const rpcvers_t, const rpcproc_t, 650 const xdrproc_t, const char *, 651 const xdrproc_t, char *, const char *); 652 __END_DECLS 653 654 /* 655 * RPC broadcast interface 656 * The call is broadcasted to all locally connected nets. 657 * 658 * extern enum clnt_stat 659 * rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp, 660 * eachresult, nettype) 661 * const rpcprog_t prog; -- program number 662 * const rpcvers_t vers; -- version number 663 * const rpcproc_t proc; -- procedure number 664 * const xdrproc_t xargs; -- xdr routine for args 665 * caddr_t argsp; -- pointer to args 666 * const xdrproc_t xresults; -- xdr routine for results 667 * caddr_t resultsp; -- pointer to results 668 * const resultproc_t eachresult; -- call with each result 669 * const char *nettype; -- Transport type 670 * 671 * For each valid response received, the procedure eachresult is called. 672 * Its form is: 673 * done = eachresult(resp, raddr, nconf) 674 * bool_t done; 675 * caddr_t resp; 676 * struct netbuf *raddr; 677 * struct netconfig *nconf; 678 * where resp points to the results of the call and raddr is the 679 * address if the responder to the broadcast. nconf is the transport 680 * on which the response was received. 681 * 682 * extern enum clnt_stat 683 * rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp, 684 * eachresult, inittime, waittime, nettype) 685 * const rpcprog_t prog; -- program number 686 * const rpcvers_t vers; -- version number 687 * const rpcproc_t proc; -- procedure number 688 * const xdrproc_t xargs; -- xdr routine for args 689 * caddr_t argsp; -- pointer to args 690 * const xdrproc_t xresults; -- xdr routine for results 691 * caddr_t resultsp; -- pointer to results 692 * const resultproc_t eachresult; -- call with each result 693 * const int inittime; -- how long to wait initially 694 * const int waittime; -- maximum time to wait 695 * const char *nettype; -- Transport type 696 */ 697 698 typedef bool_t (*resultproc_t)(caddr_t, ...); 699 700 __BEGIN_DECLS 701 extern enum clnt_stat rpc_broadcast(const rpcprog_t, const rpcvers_t, 702 const rpcproc_t, const xdrproc_t, 703 caddr_t, const xdrproc_t, caddr_t, 704 const resultproc_t, const char *); 705 extern enum clnt_stat rpc_broadcast_exp(const rpcprog_t, const rpcvers_t, 706 const rpcproc_t, const xdrproc_t, 707 caddr_t, const xdrproc_t, caddr_t, 708 const resultproc_t, const int, 709 const int, const char *); 710 __END_DECLS 711 712 /* For backward compatibility */ 713 #include <rpc/clnt_soc.h> 714 #endif 715 716 #endif /* !_RPC_CLNT_H_ */ 717