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