svc_dg.c revision 1.13
1 /* $NetBSD: svc_dg.c,v 1.13 2012/03/13 21:13:45 christos Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 /* 33 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 34 */ 35 36 /* #ident "@(#)svc_dg.c 1.17 94/04/24 SMI" */ 37 38 39 /* 40 * svc_dg.c, Server side for connectionless RPC. 41 * 42 * Does some caching in the hopes of achieving execute-at-most-once semantics. 43 */ 44 45 #include <sys/cdefs.h> 46 #if defined(LIBC_SCCS) && !defined(lint) 47 __RCSID("$NetBSD: svc_dg.c,v 1.13 2012/03/13 21:13:45 christos Exp $"); 48 #endif 49 50 #include "namespace.h" 51 #include "reentrant.h" 52 #include <sys/types.h> 53 #include <sys/socket.h> 54 #include <rpc/rpc.h> 55 #include <assert.h> 56 #include <errno.h> 57 #include <unistd.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #ifdef RPC_CACHE_DEBUG 62 #include <netconfig.h> 63 #include <netdir.h> 64 #endif 65 #include <err.h> 66 67 #include "rpc_internal.h" 68 #include "svc_dg.h" 69 70 #define su_data(xprt) ((struct svc_dg_data *)(xprt->xp_p2)) 71 #define rpc_buffer(xprt) ((xprt)->xp_p1) 72 73 #ifdef __weak_alias 74 __weak_alias(svc_dg_create,_svc_dg_create) 75 #endif 76 77 #ifndef MAX 78 #define MAX(a, b) (((a) > (b)) ? (a) : (b)) 79 #endif 80 81 static void svc_dg_ops __P((SVCXPRT *)); 82 static enum xprt_stat svc_dg_stat __P((SVCXPRT *)); 83 static bool_t svc_dg_recv __P((SVCXPRT *, struct rpc_msg *)); 84 static bool_t svc_dg_reply __P((SVCXPRT *, struct rpc_msg *)); 85 static bool_t svc_dg_getargs __P((SVCXPRT *, xdrproc_t, caddr_t)); 86 static bool_t svc_dg_freeargs __P((SVCXPRT *, xdrproc_t, caddr_t)); 87 static void svc_dg_destroy __P((SVCXPRT *)); 88 static bool_t svc_dg_control __P((SVCXPRT *, const u_int, void *)); 89 static int cache_get __P((SVCXPRT *, struct rpc_msg *, char **, size_t *)); 90 static void cache_set __P((SVCXPRT *, size_t)); 91 92 /* 93 * Usage: 94 * xprt = svc_dg_create(sock, sendsize, recvsize); 95 * Does other connectionless specific initializations. 96 * Once *xprt is initialized, it is registered. 97 * see (svc.h, xprt_register). If recvsize or sendsize are 0 suitable 98 * system defaults are chosen. 99 * The routines returns NULL if a problem occurred. 100 */ 101 static const char svc_dg_str[] = "svc_dg_create: %s"; 102 static const char svc_dg_err1[] = "could not get transport information"; 103 static const char svc_dg_err2[] = " transport does not support data transfer"; 104 static const char __no_mem_str[] = "out of memory"; 105 106 SVCXPRT * 107 svc_dg_create(fd, sendsize, recvsize) 108 int fd; 109 u_int sendsize; 110 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 freedata; 135 memset(xprt, 0, sizeof (SVCXPRT)); 136 137 su = mem_alloc(sizeof (*su)); 138 if (su == NULL) 139 goto freedata; 140 su->su_iosz = ((MAX(sendsize, recvsize) + 3) / 4) * 4; 141 if ((rpc_buffer(xprt) = malloc(su->su_iosz)) == NULL) 142 goto freedata; 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 xprt_register(xprt); 162 return (xprt); 163 freedata: 164 (void) warnx(svc_dg_str, __no_mem_str); 165 if (xprt) { 166 if (su) 167 (void) mem_free(su, sizeof (*su)); 168 (void) mem_free(xprt, sizeof (SVCXPRT)); 169 } 170 return (NULL); 171 } 172 173 /*ARGSUSED*/ 174 static enum xprt_stat 175 svc_dg_stat(xprt) 176 SVCXPRT *xprt; 177 { 178 return (XPRT_IDLE); 179 } 180 181 static bool_t 182 svc_dg_recv(xprt, msg) 183 SVCXPRT *xprt; 184 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(xprt, msg) 239 SVCXPRT *xprt; 240 struct rpc_msg *msg; 241 { 242 struct svc_dg_data *su; 243 XDR *xdrs; 244 bool_t stat = FALSE; 245 size_t slen; 246 247 _DIAGASSERT(xprt != NULL); 248 _DIAGASSERT(msg != NULL); 249 250 su = su_data(xprt); 251 xdrs = &(su->su_xdrs); 252 253 xdrs->x_op = XDR_ENCODE; 254 XDR_SETPOS(xdrs, 0); 255 msg->rm_xid = su->su_xid; 256 if (xdr_replymsg(xdrs, msg)) { 257 slen = XDR_GETPOS(xdrs); 258 if (sendto(xprt->xp_fd, rpc_buffer(xprt), slen, 0, 259 (struct sockaddr *)xprt->xp_rtaddr.buf, 260 (socklen_t)xprt->xp_rtaddr.len) == (ssize_t) slen) { 261 stat = TRUE; 262 if (su->su_cache) 263 cache_set(xprt, slen); 264 } 265 } 266 return (stat); 267 } 268 269 static bool_t 270 svc_dg_getargs(xprt, xdr_args, args_ptr) 271 SVCXPRT *xprt; 272 xdrproc_t xdr_args; 273 caddr_t args_ptr; 274 { 275 return (*xdr_args)(&(su_data(xprt)->su_xdrs), args_ptr); 276 } 277 278 static bool_t 279 svc_dg_freeargs(xprt, xdr_args, args_ptr) 280 SVCXPRT *xprt; 281 xdrproc_t xdr_args; 282 caddr_t args_ptr; 283 { 284 XDR *xdrs; 285 286 _DIAGASSERT(xprt != NULL); 287 288 xdrs = &(su_data(xprt)->su_xdrs); 289 xdrs->x_op = XDR_FREE; 290 return (*xdr_args)(xdrs, args_ptr); 291 } 292 293 static void 294 svc_dg_destroy(xprt) 295 SVCXPRT *xprt; 296 { 297 struct svc_dg_data *su; 298 299 _DIAGASSERT(xprt != NULL); 300 301 su = su_data(xprt); 302 303 xprt_unregister(xprt); 304 if (xprt->xp_fd != -1) 305 (void)close(xprt->xp_fd); 306 XDR_DESTROY(&(su->su_xdrs)); 307 (void) mem_free(rpc_buffer(xprt), su->su_iosz); 308 (void) mem_free(su, sizeof (*su)); 309 if (xprt->xp_rtaddr.buf) 310 (void) mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.maxlen); 311 if (xprt->xp_ltaddr.buf) 312 (void) mem_free(xprt->xp_ltaddr.buf, xprt->xp_ltaddr.maxlen); 313 if (xprt->xp_tp) 314 (void) free(xprt->xp_tp); 315 (void) mem_free(xprt, sizeof (SVCXPRT)); 316 } 317 318 static bool_t 319 /*ARGSUSED*/ 320 svc_dg_control(xprt, rq, in) 321 SVCXPRT *xprt; 322 const u_int rq; 323 void *in; 324 { 325 return (FALSE); 326 } 327 328 static void 329 svc_dg_ops(xprt) 330 SVCXPRT *xprt; 331 { 332 static struct xp_ops ops; 333 static struct xp_ops2 ops2; 334 #ifdef _REENTRANT 335 extern mutex_t ops_lock; 336 #endif 337 338 _DIAGASSERT(xprt != NULL); 339 340 /* VARIABLES PROTECTED BY ops_lock: ops */ 341 342 mutex_lock(&ops_lock); 343 if (ops.xp_recv == NULL) { 344 ops.xp_recv = svc_dg_recv; 345 ops.xp_stat = svc_dg_stat; 346 ops.xp_getargs = svc_dg_getargs; 347 ops.xp_reply = svc_dg_reply; 348 ops.xp_freeargs = svc_dg_freeargs; 349 ops.xp_destroy = svc_dg_destroy; 350 ops2.xp_control = svc_dg_control; 351 } 352 xprt->xp_ops = &ops; 353 xprt->xp_ops2 = &ops2; 354 mutex_unlock(&ops_lock); 355 } 356 357 /* The CACHING COMPONENT */ 358 359 /* 360 * Could have been a separate file, but some part of it depends upon the 361 * private structure of the client handle. 362 * 363 * Fifo cache for cl server 364 * Copies pointers to reply buffers into fifo cache 365 * Buffers are sent again if retransmissions are detected. 366 */ 367 368 #define SPARSENESS 4 /* 75% sparse */ 369 370 #define ALLOC(type, size) \ 371 mem_alloc((sizeof (type) * (size))) 372 373 #define MEMZERO(addr, type, size) \ 374 (void) memset((void *) (addr), 0, sizeof (type) * (int) (size)) 375 376 #define FREE(addr, type, size) \ 377 mem_free((addr), (sizeof (type) * (size))) 378 379 /* 380 * An entry in the cache 381 */ 382 typedef struct cache_node *cache_ptr; 383 struct cache_node { 384 /* 385 * Index into cache is xid, proc, vers, prog and address 386 */ 387 u_int32_t cache_xid; 388 rpcproc_t cache_proc; 389 rpcvers_t cache_vers; 390 rpcprog_t cache_prog; 391 struct netbuf cache_addr; 392 /* 393 * The cached reply and length 394 */ 395 char *cache_reply; 396 size_t cache_replylen; 397 /* 398 * Next node on the list, if there is a collision 399 */ 400 cache_ptr cache_next; 401 }; 402 403 /* 404 * The entire cache 405 */ 406 struct cl_cache { 407 u_int uc_size; /* size of cache */ 408 cache_ptr *uc_entries; /* hash table of entries in cache */ 409 cache_ptr *uc_fifo; /* fifo list of entries in cache */ 410 u_int uc_nextvictim; /* points to next victim in fifo list */ 411 rpcprog_t uc_prog; /* saved program number */ 412 rpcvers_t uc_vers; /* saved version number */ 413 rpcproc_t uc_proc; /* saved procedure number */ 414 }; 415 416 417 /* 418 * the hashing function 419 */ 420 #define CACHE_LOC(transp, xid) \ 421 (xid % (SPARSENESS * ((struct cl_cache *) \ 422 su_data(transp)->su_cache)->uc_size)) 423 424 #ifdef _REENTRANT 425 extern mutex_t dupreq_lock; 426 #endif 427 428 /* 429 * Enable use of the cache. Returns 1 on success, 0 on failure. 430 * Note: there is no disable. 431 */ 432 static const char cache_enable_str[] = "svc_enablecache: %s %s"; 433 static const char alloc_err[] = "could not allocate cache "; 434 static const char enable_err[] = "cache already enabled"; 435 436 int 437 svc_dg_enablecache(transp, size) 438 SVCXPRT *transp; 439 u_int size; 440 { 441 struct svc_dg_data *su; 442 struct cl_cache *uc; 443 444 _DIAGASSERT(transp != NULL); 445 446 su = su_data(transp); 447 448 mutex_lock(&dupreq_lock); 449 if (su->su_cache != NULL) { 450 (void) warnx(cache_enable_str, enable_err, " "); 451 mutex_unlock(&dupreq_lock); 452 return (0); 453 } 454 uc = ALLOC(struct cl_cache, 1); 455 if (uc == NULL) { 456 warnx(cache_enable_str, alloc_err, " "); 457 mutex_unlock(&dupreq_lock); 458 return (0); 459 } 460 uc->uc_size = size; 461 uc->uc_nextvictim = 0; 462 uc->uc_entries = ALLOC(cache_ptr, size * SPARSENESS); 463 if (uc->uc_entries == NULL) { 464 warnx(cache_enable_str, alloc_err, "data"); 465 FREE(uc, struct cl_cache, 1); 466 mutex_unlock(&dupreq_lock); 467 return (0); 468 } 469 MEMZERO(uc->uc_entries, cache_ptr, size * SPARSENESS); 470 uc->uc_fifo = ALLOC(cache_ptr, size); 471 if (uc->uc_fifo == NULL) { 472 warnx(cache_enable_str, alloc_err, "fifo"); 473 FREE(uc->uc_entries, cache_ptr, size * SPARSENESS); 474 FREE(uc, struct cl_cache, 1); 475 mutex_unlock(&dupreq_lock); 476 return (0); 477 } 478 MEMZERO(uc->uc_fifo, cache_ptr, size); 479 su->su_cache = (char *)(void *)uc; 480 mutex_unlock(&dupreq_lock); 481 return (1); 482 } 483 484 /* 485 * Set an entry in the cache. It assumes that the uc entry is set from 486 * the earlier call to cache_get() for the same procedure. This will always 487 * happen because cache_get() is calle by svc_dg_recv and cache_set() is called 488 * by svc_dg_reply(). All this hoopla because the right RPC parameters are 489 * not available at svc_dg_reply time. 490 */ 491 492 static const char cache_set_str[] = "cache_set: %s"; 493 static const char cache_set_err1[] = "victim not found"; 494 static const char cache_set_err2[] = "victim alloc failed"; 495 static const char cache_set_err3[] = "could not allocate new rpc buffer"; 496 497 static void 498 cache_set(xprt, replylen) 499 SVCXPRT *xprt; 500 size_t replylen; 501 { 502 cache_ptr victim; 503 cache_ptr *vicp; 504 struct svc_dg_data *su; 505 struct cl_cache *uc; 506 u_int loc; 507 char *newbuf; 508 #ifdef RPC_CACHE_DEBUG 509 struct netconfig *nconf; 510 char *uaddr; 511 #endif 512 513 _DIAGASSERT(xprt != NULL); 514 515 su = su_data(xprt); 516 uc = (struct cl_cache *) su->su_cache; 517 518 mutex_lock(&dupreq_lock); 519 /* 520 * Find space for the new entry, either by 521 * reusing an old entry, or by mallocing a new one 522 */ 523 victim = uc->uc_fifo[uc->uc_nextvictim]; 524 if (victim != NULL) { 525 loc = CACHE_LOC(xprt, victim->cache_xid); 526 for (vicp = &uc->uc_entries[loc]; 527 *vicp != NULL && *vicp != victim; 528 vicp = &(*vicp)->cache_next) 529 ; 530 if (*vicp == NULL) { 531 warnx(cache_set_str, cache_set_err1); 532 mutex_unlock(&dupreq_lock); 533 return; 534 } 535 *vicp = victim->cache_next; /* remove from cache */ 536 newbuf = victim->cache_reply; 537 } else { 538 victim = ALLOC(struct cache_node, 1); 539 if (victim == NULL) { 540 warnx(cache_set_str, cache_set_err2); 541 mutex_unlock(&dupreq_lock); 542 return; 543 } 544 newbuf = mem_alloc(su->su_iosz); 545 if (newbuf == NULL) { 546 warnx(cache_set_str, cache_set_err3); 547 FREE(victim, struct cache_node, 1); 548 mutex_unlock(&dupreq_lock); 549 return; 550 } 551 } 552 553 /* 554 * Store it away 555 */ 556 #ifdef RPC_CACHE_DEBUG 557 if (nconf = getnetconfigent(xprt->xp_netid)) { 558 uaddr = taddr2uaddr(nconf, &xprt->xp_rtaddr); 559 freenetconfigent(nconf); 560 printf( 561 "cache set for xid= %x prog=%d vers=%d proc=%d for rmtaddr=%s\n", 562 su->su_xid, uc->uc_prog, uc->uc_vers, 563 uc->uc_proc, uaddr); 564 free(uaddr); 565 } 566 #endif 567 victim->cache_replylen = replylen; 568 victim->cache_reply = rpc_buffer(xprt); 569 rpc_buffer(xprt) = newbuf; 570 _DIAGASSERT(__type_fit(u_int, su->su_iosz)); 571 xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), (u_int)su->su_iosz, 572 XDR_ENCODE); 573 victim->cache_xid = su->su_xid; 574 victim->cache_proc = uc->uc_proc; 575 victim->cache_vers = uc->uc_vers; 576 victim->cache_prog = uc->uc_prog; 577 victim->cache_addr = xprt->xp_rtaddr; 578 victim->cache_addr.buf = ALLOC(char, xprt->xp_rtaddr.len); 579 (void) memcpy(victim->cache_addr.buf, xprt->xp_rtaddr.buf, 580 (size_t)xprt->xp_rtaddr.len); 581 loc = CACHE_LOC(xprt, victim->cache_xid); 582 victim->cache_next = uc->uc_entries[loc]; 583 uc->uc_entries[loc] = victim; 584 uc->uc_fifo[uc->uc_nextvictim++] = victim; 585 uc->uc_nextvictim %= uc->uc_size; 586 mutex_unlock(&dupreq_lock); 587 } 588 589 /* 590 * Try to get an entry from the cache 591 * return 1 if found, 0 if not found and set the stage for cache_set() 592 */ 593 static int 594 cache_get(xprt, msg, replyp, replylenp) 595 SVCXPRT *xprt; 596 struct rpc_msg *msg; 597 char **replyp; 598 size_t *replylenp; 599 { 600 u_int loc; 601 cache_ptr ent; 602 struct svc_dg_data *su; 603 struct cl_cache *uc; 604 #ifdef RPC_CACHE_DEBUG 605 struct netconfig *nconf; 606 char *uaddr; 607 #endif 608 609 _DIAGASSERT(xprt != NULL); 610 _DIAGASSERT(msg != NULL); 611 _DIAGASSERT(replyp != NULL); 612 _DIAGASSERT(replylenp != NULL); 613 614 su = su_data(xprt); 615 uc = (struct cl_cache *) su->su_cache; 616 617 mutex_lock(&dupreq_lock); 618 loc = CACHE_LOC(xprt, su->su_xid); 619 for (ent = uc->uc_entries[loc]; ent != NULL; ent = ent->cache_next) { 620 if (ent->cache_xid == su->su_xid && 621 ent->cache_proc == msg->rm_call.cb_proc && 622 ent->cache_vers == msg->rm_call.cb_vers && 623 ent->cache_prog == msg->rm_call.cb_prog && 624 ent->cache_addr.len == xprt->xp_rtaddr.len && 625 (memcmp(ent->cache_addr.buf, xprt->xp_rtaddr.buf, 626 xprt->xp_rtaddr.len) == 0)) { 627 #ifdef RPC_CACHE_DEBUG 628 if (nconf = getnetconfigent(xprt->xp_netid)) { 629 uaddr = taddr2uaddr(nconf, &xprt->xp_rtaddr); 630 freenetconfigent(nconf); 631 printf( 632 "cache entry found for xid=%x prog=%d vers=%d proc=%d for rmtaddr=%s\n", 633 su->su_xid, msg->rm_call.cb_prog, 634 msg->rm_call.cb_vers, 635 msg->rm_call.cb_proc, uaddr); 636 free(uaddr); 637 } 638 #endif 639 *replyp = ent->cache_reply; 640 *replylenp = ent->cache_replylen; 641 mutex_unlock(&dupreq_lock); 642 return (1); 643 } 644 } 645 /* 646 * Failed to find entry 647 * Remember a few things so we can do a set later 648 */ 649 uc->uc_proc = msg->rm_call.cb_proc; 650 uc->uc_vers = msg->rm_call.cb_vers; 651 uc->uc_prog = msg->rm_call.cb_prog; 652 mutex_unlock(&dupreq_lock); 653 return (0); 654 } 655
Indexes created Tue Sep 23 14:10:03 GMT 2025