1 /* $NetBSD: svc_dg.c,v 1.17 2013/03/11 20:19:29 tron Exp $ */ 2 3 /* 4 * Copyright (c) 2010, Oracle America, Inc. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * * Redistributions in binary form must reproduce the above 13 * copyright notice, this list of conditions and the following 14 * disclaimer in the documentation and/or other materials 15 * 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 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 27 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 36 */ 37 38 /* #ident "@(#)svc_dg.c 1.17 94/04/24 SMI" */ 39 40 41 /* 42 * svc_dg.c, Server side for connectionless RPC. 43 * 44 * Does some caching in the hopes of achieving execute-at-most-once semantics. 45 */ 46 47 #include <sys/cdefs.h> 48 #if defined(LIBC_SCCS) && !defined(lint) 49 __RCSID("$NetBSD: svc_dg.c,v 1.17 2013/03/11 20:19:29 tron Exp $"); 50 #endif 51 52 #include "namespace.h" 53 #include "reentrant.h" 54 #include <sys/types.h> 55 #include <sys/socket.h> 56 #include <rpc/rpc.h> 57 #include <assert.h> 58 #include <errno.h> 59 #include <unistd.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #ifdef RPC_CACHE_DEBUG 64 #include <netconfig.h> 65 #include <netdir.h> 66 #endif 67 #include <err.h> 68 69 #include "svc_fdset.h" 70 #include "rpc_internal.h" 71 #include "svc_dg.h" 72 73 #define su_data(xprt) ((struct svc_dg_data *)(xprt->xp_p2)) 74 #define rpc_buffer(xprt) ((xprt)->xp_p1) 75 76 #ifdef __weak_alias 77 __weak_alias(svc_dg_create,_svc_dg_create) 78 #endif 79 80 #ifndef MAX 81 #define MAX(a, b) (((a) > (b)) ? (a) : (b)) 82 #endif 83 84 static void svc_dg_ops(SVCXPRT *); 85 static enum xprt_stat svc_dg_stat(SVCXPRT *); 86 static bool_t svc_dg_recv(SVCXPRT *, struct rpc_msg *); 87 static bool_t svc_dg_reply(SVCXPRT *, struct rpc_msg *); 88 static bool_t svc_dg_getargs(SVCXPRT *, xdrproc_t, caddr_t); 89 static bool_t svc_dg_freeargs(SVCXPRT *, xdrproc_t, caddr_t); 90 static void svc_dg_destroy(SVCXPRT *); 91 static bool_t svc_dg_control(SVCXPRT *, const u_int, void *); 92 static int cache_get(SVCXPRT *, struct rpc_msg *, char **, size_t *); 93 static void cache_set(SVCXPRT *, size_t); 94 95 /* 96 * Usage: 97 * xprt = svc_dg_create(sock, sendsize, recvsize); 98 * Does other connectionless specific initializations. 99 * Once *xprt is initialized, it is registered. 100 * see (svc.h, xprt_register). If recvsize or sendsize are 0 suitable 101 * system defaults are chosen. 102 * The routines returns NULL if a problem occurred. 103 */ 104 static const char svc_dg_str[] = "svc_dg_create: %s"; 105 static const char svc_dg_err1[] = "could not get transport information"; 106 static const char svc_dg_err2[] = " transport does not support data transfer"; 107 static const char __no_mem_str[] = "out of memory"; 108 109 SVCXPRT * 110 svc_dg_create(int fd, u_int sendsize, u_int recvsize) 111 { 112 SVCXPRT *xprt; 113 struct svc_dg_data *su = NULL; 114 struct __rpc_sockinfo si; 115 struct sockaddr_storage ss; 116 socklen_t slen; 117 118 if (!__rpc_fd2sockinfo(fd, &si)) { 119 warnx(svc_dg_str, svc_dg_err1); 120 return (NULL); 121 } 122 /* 123 * Find the receive and the send size 124 */ 125 sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize); 126 recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize); 127 if ((sendsize == 0) || (recvsize == 0)) { 128 warnx(svc_dg_str, svc_dg_err2); 129 return (NULL); 130 } 131 132 xprt = mem_alloc(sizeof (SVCXPRT)); 133 if (xprt == NULL) 134 goto outofmem; 135 memset(xprt, 0, sizeof (SVCXPRT)); 136 137 su = mem_alloc(sizeof (*su)); 138 if (su == NULL) 139 goto outofmem; 140 su->su_iosz = ((MAX(sendsize, recvsize) + 3) / 4) * 4; 141 if ((rpc_buffer(xprt) = malloc(su->su_iosz)) == NULL) 142 goto outofmem; 143 _DIAGASSERT(__type_fit(u_int, su->su_iosz)); 144 xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), (u_int)su->su_iosz, 145 XDR_DECODE); 146 su->su_cache = NULL; 147 xprt->xp_fd = fd; 148 xprt->xp_p2 = (caddr_t)(void *)su; 149 xprt->xp_verf.oa_base = su->su_verfbody; 150 svc_dg_ops(xprt); 151 xprt->xp_rtaddr.maxlen = sizeof (struct sockaddr_storage); 152 153 slen = sizeof ss; 154 if (getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) 155 goto freedata; 156 xprt->xp_ltaddr.buf = mem_alloc(sizeof (struct sockaddr_storage)); 157 xprt->xp_ltaddr.maxlen = sizeof (struct sockaddr_storage); 158 xprt->xp_ltaddr.len = slen; 159 memcpy(xprt->xp_ltaddr.buf, &ss, slen); 160 161 if (!xprt_register(xprt)) 162 goto freedata; 163 return (xprt); 164 165 outofmem: 166 (void) warnx(svc_dg_str, __no_mem_str); 167 freedata: 168 if (xprt) { 169 if (su) 170 (void) mem_free(su, sizeof (*su)); 171 (void) mem_free(xprt, sizeof (SVCXPRT)); 172 } 173 return (NULL); 174 } 175 176 /*ARGSUSED*/ 177 static enum xprt_stat 178 svc_dg_stat(SVCXPRT *xprt) 179 { 180 return (XPRT_IDLE); 181 } 182 183 static bool_t 184 svc_dg_recv(SVCXPRT *xprt, struct rpc_msg *msg) 185 { 186 struct svc_dg_data *su; 187 XDR *xdrs; 188 char *reply; 189 struct sockaddr_storage ss; 190 socklen_t alen; 191 size_t replylen; 192 ssize_t rlen; 193 194 _DIAGASSERT(xprt != NULL); 195 _DIAGASSERT(msg != NULL); 196 197 su = su_data(xprt); 198 xdrs = &(su->su_xdrs); 199 200 again: 201 alen = sizeof (struct sockaddr_storage); 202 rlen = recvfrom(xprt->xp_fd, rpc_buffer(xprt), su->su_iosz, 0, 203 (struct sockaddr *)(void *)&ss, &alen); 204 if (rlen == -1 && errno == EINTR) 205 goto again; 206 if (rlen == -1 || (rlen < (ssize_t)(4 * sizeof (u_int32_t)))) 207 return (FALSE); 208 if (xprt->xp_rtaddr.len < alen) { 209 if (xprt->xp_rtaddr.len != 0) 210 mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.len); 211 xprt->xp_rtaddr.buf = mem_alloc(alen); 212 xprt->xp_rtaddr.len = alen; 213 } 214 memcpy(xprt->xp_rtaddr.buf, &ss, alen); 215 #ifdef PORTMAP 216 if (ss.ss_family == AF_INET) { 217 xprt->xp_raddr = *(struct sockaddr_in *)xprt->xp_rtaddr.buf; 218 xprt->xp_addrlen = sizeof (struct sockaddr_in); 219 } 220 #endif 221 xdrs->x_op = XDR_DECODE; 222 XDR_SETPOS(xdrs, 0); 223 if (! xdr_callmsg(xdrs, msg)) { 224 return (FALSE); 225 } 226 su->su_xid = msg->rm_xid; 227 if (su->su_cache != NULL) { 228 if (cache_get(xprt, msg, &reply, &replylen)) { 229 (void)sendto(xprt->xp_fd, reply, replylen, 0, 230 (struct sockaddr *)(void *)&ss, alen); 231 return (FALSE); 232 } 233 } 234 return (TRUE); 235 } 236 237 static bool_t 238 svc_dg_reply(SVCXPRT *xprt, struct rpc_msg *msg) 239 { 240 struct svc_dg_data *su; 241 XDR *xdrs; 242 bool_t stat = FALSE; 243 size_t slen; 244 245 _DIAGASSERT(xprt != NULL); 246 _DIAGASSERT(msg != NULL); 247 248 su = su_data(xprt); 249 xdrs = &(su->su_xdrs); 250 251 xdrs->x_op = XDR_ENCODE; 252 XDR_SETPOS(xdrs, 0); 253 msg->rm_xid = su->su_xid; 254 if (xdr_replymsg(xdrs, msg)) { 255 slen = XDR_GETPOS(xdrs); 256 if (sendto(xprt->xp_fd, rpc_buffer(xprt), slen, 0, 257 (struct sockaddr *)xprt->xp_rtaddr.buf, 258 (socklen_t)xprt->xp_rtaddr.len) == (ssize_t) slen) { 259 stat = TRUE; 260 if (su->su_cache) 261 cache_set(xprt, slen); 262 } 263 } 264 return (stat); 265 } 266 267 static bool_t 268 svc_dg_getargs(SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr) 269 { 270 return (*xdr_args)(&(su_data(xprt)->su_xdrs), args_ptr); 271 } 272 273 static bool_t 274 svc_dg_freeargs(SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr) 275 { 276 XDR *xdrs; 277 278 _DIAGASSERT(xprt != NULL); 279 280 xdrs = &(su_data(xprt)->su_xdrs); 281 xdrs->x_op = XDR_FREE; 282 return (*xdr_args)(xdrs, args_ptr); 283 } 284 285 static void 286 svc_dg_destroy(SVCXPRT *xprt) 287 { 288 struct svc_dg_data *su; 289 290 _DIAGASSERT(xprt != NULL); 291 292 su = su_data(xprt); 293 294 xprt_unregister(xprt); 295 if (xprt->xp_fd != -1) 296 (void)close(xprt->xp_fd); 297 XDR_DESTROY(&(su->su_xdrs)); 298 (void) mem_free(rpc_buffer(xprt), su->su_iosz); 299 (void) mem_free(su, sizeof (*su)); 300 if (xprt->xp_rtaddr.buf) 301 (void) mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.maxlen); 302 if (xprt->xp_ltaddr.buf) 303 (void) mem_free(xprt->xp_ltaddr.buf, xprt->xp_ltaddr.maxlen); 304 if (xprt->xp_tp) 305 (void) free(xprt->xp_tp); 306 (void) mem_free(xprt, sizeof (SVCXPRT)); 307 } 308 309 static bool_t 310 /*ARGSUSED*/ 311 svc_dg_control(SVCXPRT *xprt, const u_int rq, void *in) 312 { 313 return (FALSE); 314 } 315 316 static void 317 svc_dg_ops(SVCXPRT *xprt) 318 { 319 static struct xp_ops ops; 320 static struct xp_ops2 ops2; 321 #ifdef _REENTRANT 322 extern mutex_t ops_lock; 323 #endif 324 325 _DIAGASSERT(xprt != NULL); 326 327 /* VARIABLES PROTECTED BY ops_lock: ops */ 328 329 mutex_lock(&ops_lock); 330 if (ops.xp_recv == NULL) { 331 ops.xp_recv = svc_dg_recv; 332 ops.xp_stat = svc_dg_stat; 333 ops.xp_getargs = svc_dg_getargs; 334 ops.xp_reply = svc_dg_reply; 335 ops.xp_freeargs = svc_dg_freeargs; 336 ops.xp_destroy = svc_dg_destroy; 337 ops2.xp_control = svc_dg_control; 338 } 339 xprt->xp_ops = &ops; 340 xprt->xp_ops2 = &ops2; 341 mutex_unlock(&ops_lock); 342 } 343 344 /* The CACHING COMPONENT */ 345 346 /* 347 * Could have been a separate file, but some part of it depends upon the 348 * private structure of the client handle. 349 * 350 * Fifo cache for cl server 351 * Copies pointers to reply buffers into fifo cache 352 * Buffers are sent again if retransmissions are detected. 353 */ 354 355 #define SPARSENESS 4 /* 75% sparse */ 356 357 #define ALLOC(type, size) \ 358 mem_alloc((sizeof (type) * (size))) 359 360 #define MEMZERO(addr, type, size) \ 361 (void) memset((void *) (addr), 0, sizeof (type) * (int) (size)) 362 363 #define FREE(addr, type, size) \ 364 mem_free((addr), (sizeof (type) * (size))) 365 366 /* 367 * An entry in the cache 368 */ 369 typedef struct cache_node *cache_ptr; 370 struct cache_node { 371 /* 372 * Index into cache is xid, proc, vers, prog and address 373 */ 374 u_int32_t cache_xid; 375 rpcproc_t cache_proc; 376 rpcvers_t cache_vers; 377 rpcprog_t cache_prog; 378 struct netbuf cache_addr; 379 /* 380 * The cached reply and length 381 */ 382 char *cache_reply; 383 size_t cache_replylen; 384 /* 385 * Next node on the list, if there is a collision 386 */ 387 cache_ptr cache_next; 388 }; 389 390 /* 391 * The entire cache 392 */ 393 struct cl_cache { 394 u_int uc_size; /* size of cache */ 395 cache_ptr *uc_entries; /* hash table of entries in cache */ 396 cache_ptr *uc_fifo; /* fifo list of entries in cache */ 397 u_int uc_nextvictim; /* points to next victim in fifo list */ 398 rpcprog_t uc_prog; /* saved program number */ 399 rpcvers_t uc_vers; /* saved version number */ 400 rpcproc_t uc_proc; /* saved procedure number */ 401 }; 402 403 404 /* 405 * the hashing function 406 */ 407 #define CACHE_LOC(transp, xid) \ 408 (xid % (SPARSENESS * ((struct cl_cache *) \ 409 su_data(transp)->su_cache)->uc_size)) 410 411 #ifdef _REENTRANT 412 extern mutex_t dupreq_lock; 413 #endif 414 415 /* 416 * Enable use of the cache. Returns 1 on success, 0 on failure. 417 * Note: there is no disable. 418 */ 419 static const char cache_enable_str[] = "svc_enablecache: %s %s"; 420 static const char alloc_err[] = "could not allocate cache "; 421 static const char enable_err[] = "cache already enabled"; 422 423 int 424 svc_dg_enablecache(SVCXPRT *transp, u_int size) 425 { 426 struct svc_dg_data *su; 427 struct cl_cache *uc; 428 429 _DIAGASSERT(transp != NULL); 430 431 su = su_data(transp); 432 433 mutex_lock(&dupreq_lock); 434 if (su->su_cache != NULL) { 435 (void) warnx(cache_enable_str, enable_err, " "); 436 mutex_unlock(&dupreq_lock); 437 return (0); 438 } 439 uc = ALLOC(struct cl_cache, 1); 440 if (uc == NULL) { 441 warnx(cache_enable_str, alloc_err, " "); 442 mutex_unlock(&dupreq_lock); 443 return (0); 444 } 445 uc->uc_size = size; 446 uc->uc_nextvictim = 0; 447 uc->uc_entries = ALLOC(cache_ptr, size * SPARSENESS); 448 if (uc->uc_entries == NULL) { 449 warnx(cache_enable_str, alloc_err, "data"); 450 FREE(uc, struct cl_cache, 1); 451 mutex_unlock(&dupreq_lock); 452 return (0); 453 } 454 MEMZERO(uc->uc_entries, cache_ptr, size * SPARSENESS); 455 uc->uc_fifo = ALLOC(cache_ptr, size); 456 if (uc->uc_fifo == NULL) { 457 warnx(cache_enable_str, alloc_err, "fifo"); 458 FREE(uc->uc_entries, cache_ptr, size * SPARSENESS); 459 FREE(uc, struct cl_cache, 1); 460 mutex_unlock(&dupreq_lock); 461 return (0); 462 } 463 MEMZERO(uc->uc_fifo, cache_ptr, size); 464 su->su_cache = (char *)(void *)uc; 465 mutex_unlock(&dupreq_lock); 466 return (1); 467 } 468 469 /* 470 * Set an entry in the cache. It assumes that the uc entry is set from 471 * the earlier call to cache_get() for the same procedure. This will always 472 * happen because cache_get() is calle by svc_dg_recv and cache_set() is called 473 * by svc_dg_reply(). All this hoopla because the right RPC parameters are 474 * not available at svc_dg_reply time. 475 */ 476 477 static const char cache_set_str[] = "cache_set: %s"; 478 static const char cache_set_err1[] = "victim not found"; 479 static const char cache_set_err2[] = "victim alloc failed"; 480 static const char cache_set_err3[] = "could not allocate new rpc buffer"; 481 482 static void 483 cache_set(SVCXPRT *xprt, size_t replylen) 484 { 485 cache_ptr victim; 486 cache_ptr *vicp; 487 struct svc_dg_data *su; 488 struct cl_cache *uc; 489 u_int loc; 490 char *newbuf; 491 #ifdef RPC_CACHE_DEBUG 492 struct netconfig *nconf; 493 char *uaddr; 494 #endif 495 496 _DIAGASSERT(xprt != NULL); 497 498 su = su_data(xprt); 499 uc = (struct cl_cache *) su->su_cache; 500 501 mutex_lock(&dupreq_lock); 502 /* 503 * Find space for the new entry, either by 504 * reusing an old entry, or by mallocing a new one 505 */ 506 victim = uc->uc_fifo[uc->uc_nextvictim]; 507 if (victim != NULL) { 508 loc = CACHE_LOC(xprt, victim->cache_xid); 509 for (vicp = &uc->uc_entries[loc]; 510 *vicp != NULL && *vicp != victim; 511 vicp = &(*vicp)->cache_next) 512 ; 513 if (*vicp == NULL) { 514 warnx(cache_set_str, cache_set_err1); 515 mutex_unlock(&dupreq_lock); 516 return; 517 } 518 *vicp = victim->cache_next; /* remove from cache */ 519 newbuf = victim->cache_reply; 520 } else { 521 victim = ALLOC(struct cache_node, 1); 522 if (victim == NULL) { 523 warnx(cache_set_str, cache_set_err2); 524 mutex_unlock(&dupreq_lock); 525 return; 526 } 527 newbuf = mem_alloc(su->su_iosz); 528 if (newbuf == NULL) { 529 warnx(cache_set_str, cache_set_err3); 530 FREE(victim, struct cache_node, 1); 531 mutex_unlock(&dupreq_lock); 532 return; 533 } 534 } 535 536 /* 537 * Store it away 538 */ 539 #ifdef RPC_CACHE_DEBUG 540 if (nconf = getnetconfigent(xprt->xp_netid)) { 541 uaddr = taddr2uaddr(nconf, &xprt->xp_rtaddr); 542 freenetconfigent(nconf); 543 printf( 544 "cache set for xid= %x prog=%d vers=%d proc=%d for rmtaddr=%s\n", 545 su->su_xid, uc->uc_prog, uc->uc_vers, 546 uc->uc_proc, uaddr); 547 free(uaddr); 548 } 549 #endif 550 victim->cache_replylen = replylen; 551 victim->cache_reply = rpc_buffer(xprt); 552 rpc_buffer(xprt) = newbuf; 553 _DIAGASSERT(__type_fit(u_int, su->su_iosz)); 554 xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), (u_int)su->su_iosz, 555 XDR_ENCODE); 556 victim->cache_xid = su->su_xid; 557 victim->cache_proc = uc->uc_proc; 558 victim->cache_vers = uc->uc_vers; 559 victim->cache_prog = uc->uc_prog; 560 victim->cache_addr = xprt->xp_rtaddr; 561 victim->cache_addr.buf = ALLOC(char, xprt->xp_rtaddr.len); 562 (void) memcpy(victim->cache_addr.buf, xprt->xp_rtaddr.buf, 563 (size_t)xprt->xp_rtaddr.len); 564 loc = CACHE_LOC(xprt, victim->cache_xid); 565 victim->cache_next = uc->uc_entries[loc]; 566 uc->uc_entries[loc] = victim; 567 uc->uc_fifo[uc->uc_nextvictim++] = victim; 568 uc->uc_nextvictim %= uc->uc_size; 569 mutex_unlock(&dupreq_lock); 570 } 571 572 /* 573 * Try to get an entry from the cache 574 * return 1 if found, 0 if not found and set the stage for cache_set() 575 */ 576 static int 577 cache_get(SVCXPRT *xprt, struct rpc_msg *msg, char **replyp, size_t *replylenp) 578 { 579 u_int loc; 580 cache_ptr ent; 581 struct svc_dg_data *su; 582 struct cl_cache *uc; 583 #ifdef RPC_CACHE_DEBUG 584 struct netconfig *nconf; 585 char *uaddr; 586 #endif 587 588 _DIAGASSERT(xprt != NULL); 589 _DIAGASSERT(msg != NULL); 590 _DIAGASSERT(replyp != NULL); 591 _DIAGASSERT(replylenp != NULL); 592 593 su = su_data(xprt); 594 uc = (struct cl_cache *) su->su_cache; 595 596 mutex_lock(&dupreq_lock); 597 loc = CACHE_LOC(xprt, su->su_xid); 598 for (ent = uc->uc_entries[loc]; ent != NULL; ent = ent->cache_next) { 599 if (ent->cache_xid == su->su_xid && 600 ent->cache_proc == msg->rm_call.cb_proc && 601 ent->cache_vers == msg->rm_call.cb_vers && 602 ent->cache_prog == msg->rm_call.cb_prog && 603 ent->cache_addr.len == xprt->xp_rtaddr.len && 604 (memcmp(ent->cache_addr.buf, xprt->xp_rtaddr.buf, 605 xprt->xp_rtaddr.len) == 0)) { 606 #ifdef RPC_CACHE_DEBUG 607 if (nconf = getnetconfigent(xprt->xp_netid)) { 608 uaddr = taddr2uaddr(nconf, &xprt->xp_rtaddr); 609 freenetconfigent(nconf); 610 printf( 611 "cache entry found for xid=%x prog=%d vers=%d proc=%d for rmtaddr=%s\n", 612 su->su_xid, msg->rm_call.cb_prog, 613 msg->rm_call.cb_vers, 614 msg->rm_call.cb_proc, uaddr); 615 free(uaddr); 616 } 617 #endif 618 *replyp = ent->cache_reply; 619 *replylenp = ent->cache_replylen; 620 mutex_unlock(&dupreq_lock); 621 return (1); 622 } 623 } 624 /* 625 * Failed to find entry 626 * Remember a few things so we can do a set later 627 */ 628 uc->uc_proc = msg->rm_call.cb_proc; 629 uc->uc_vers = msg->rm_call.cb_vers; 630 uc->uc_prog = msg->rm_call.cb_prog; 631 mutex_unlock(&dupreq_lock); 632 return (0); 633 } 634