svc_dg.c revision 1.14
1 /* $NetBSD: svc_dg.c,v 1.14 2012/03/20 17:14:50 matt 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 1.14 2012/03/20 17:14:50 matt 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(SVCXPRT *); 82 static enum xprt_stat svc_dg_stat(SVCXPRT *); 83 static bool_t svc_dg_recv(SVCXPRT *, struct rpc_msg *); 84 static bool_t svc_dg_reply(SVCXPRT *, struct rpc_msg *); 85 static bool_t svc_dg_getargs(SVCXPRT *, xdrproc_t, caddr_t); 86 static bool_t svc_dg_freeargs(SVCXPRT *, xdrproc_t, caddr_t); 87 static void svc_dg_destroy(SVCXPRT *); 88 static bool_t svc_dg_control(SVCXPRT *, const u_int, void *); 89 static int cache_get(SVCXPRT *, struct rpc_msg *, char **, size_t *); 90 static void cache_set(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(int fd, u_int sendsize, u_int recvsize) 108 { 109 SVCXPRT *xprt; 110 struct svc_dg_data *su = NULL; 111 struct __rpc_sockinfo si; 112 struct sockaddr_storage ss; 113 socklen_t slen; 114 115 if (!__rpc_fd2sockinfo(fd, &si)) { 116 warnx(svc_dg_str, svc_dg_err1); 117 return (NULL); 118 } 119 /* 120 * Find the receive and the send size 121 */ 122 sendsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsize); 123 recvsize = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsize); 124 if ((sendsize == 0) || (recvsize == 0)) { 125 warnx(svc_dg_str, svc_dg_err2); 126 return (NULL); 127 } 128 129 xprt = mem_alloc(sizeof (SVCXPRT)); 130 if (xprt == NULL) 131 goto freedata; 132 memset(xprt, 0, sizeof (SVCXPRT)); 133 134 su = mem_alloc(sizeof (*su)); 135 if (su == NULL) 136 goto freedata; 137 su->su_iosz = ((MAX(sendsize, recvsize) + 3) / 4) * 4; 138 if ((rpc_buffer(xprt) = malloc(su->su_iosz)) == NULL) 139 goto freedata; 140 _DIAGASSERT(__type_fit(u_int, su->su_iosz)); 141 xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), (u_int)su->su_iosz, 142 XDR_DECODE); 143 su->su_cache = NULL; 144 xprt->xp_fd = fd; 145 xprt->xp_p2 = (caddr_t)(void *)su; 146 xprt->xp_verf.oa_base = su->su_verfbody; 147 svc_dg_ops(xprt); 148 xprt->xp_rtaddr.maxlen = sizeof (struct sockaddr_storage); 149 150 slen = sizeof ss; 151 if (getsockname(fd, (struct sockaddr *)(void *)&ss, &slen) < 0) 152 goto freedata; 153 xprt->xp_ltaddr.buf = mem_alloc(sizeof (struct sockaddr_storage)); 154 xprt->xp_ltaddr.maxlen = sizeof (struct sockaddr_storage); 155 xprt->xp_ltaddr.len = slen; 156 memcpy(xprt->xp_ltaddr.buf, &ss, slen); 157 158 xprt_register(xprt); 159 return (xprt); 160 freedata: 161 (void) warnx(svc_dg_str, __no_mem_str); 162 if (xprt) { 163 if (su) 164 (void) mem_free(su, sizeof (*su)); 165 (void) mem_free(xprt, sizeof (SVCXPRT)); 166 } 167 return (NULL); 168 } 169 170 /*ARGSUSED*/ 171 static enum xprt_stat 172 svc_dg_stat(SVCXPRT *xprt) 173 { 174 return (XPRT_IDLE); 175 } 176 177 static bool_t 178 svc_dg_recv(SVCXPRT *xprt, struct rpc_msg *msg) 179 { 180 struct svc_dg_data *su; 181 XDR *xdrs; 182 char *reply; 183 struct sockaddr_storage ss; 184 socklen_t alen; 185 size_t replylen; 186 ssize_t rlen; 187 188 _DIAGASSERT(xprt != NULL); 189 _DIAGASSERT(msg != NULL); 190 191 su = su_data(xprt); 192 xdrs = &(su->su_xdrs); 193 194 again: 195 alen = sizeof (struct sockaddr_storage); 196 rlen = recvfrom(xprt->xp_fd, rpc_buffer(xprt), su->su_iosz, 0, 197 (struct sockaddr *)(void *)&ss, &alen); 198 if (rlen == -1 && errno == EINTR) 199 goto again; 200 if (rlen == -1 || (rlen < (ssize_t)(4 * sizeof (u_int32_t)))) 201 return (FALSE); 202 if (xprt->xp_rtaddr.len < alen) { 203 if (xprt->xp_rtaddr.len != 0) 204 mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.len); 205 xprt->xp_rtaddr.buf = mem_alloc(alen); 206 xprt->xp_rtaddr.len = alen; 207 } 208 memcpy(xprt->xp_rtaddr.buf, &ss, alen); 209 #ifdef PORTMAP 210 if (ss.ss_family == AF_INET) { 211 xprt->xp_raddr = *(struct sockaddr_in *)xprt->xp_rtaddr.buf; 212 xprt->xp_addrlen = sizeof (struct sockaddr_in); 213 } 214 #endif 215 xdrs->x_op = XDR_DECODE; 216 XDR_SETPOS(xdrs, 0); 217 if (! xdr_callmsg(xdrs, msg)) { 218 return (FALSE); 219 } 220 su->su_xid = msg->rm_xid; 221 if (su->su_cache != NULL) { 222 if (cache_get(xprt, msg, &reply, &replylen)) { 223 (void)sendto(xprt->xp_fd, reply, replylen, 0, 224 (struct sockaddr *)(void *)&ss, alen); 225 return (FALSE); 226 } 227 } 228 return (TRUE); 229 } 230 231 static bool_t 232 svc_dg_reply(SVCXPRT *xprt, struct rpc_msg *msg) 233 { 234 struct svc_dg_data *su; 235 XDR *xdrs; 236 bool_t stat = FALSE; 237 size_t slen; 238 239 _DIAGASSERT(xprt != NULL); 240 _DIAGASSERT(msg != NULL); 241 242 su = su_data(xprt); 243 xdrs = &(su->su_xdrs); 244 245 xdrs->x_op = XDR_ENCODE; 246 XDR_SETPOS(xdrs, 0); 247 msg->rm_xid = su->su_xid; 248 if (xdr_replymsg(xdrs, msg)) { 249 slen = XDR_GETPOS(xdrs); 250 if (sendto(xprt->xp_fd, rpc_buffer(xprt), slen, 0, 251 (struct sockaddr *)xprt->xp_rtaddr.buf, 252 (socklen_t)xprt->xp_rtaddr.len) == (ssize_t) slen) { 253 stat = TRUE; 254 if (su->su_cache) 255 cache_set(xprt, slen); 256 } 257 } 258 return (stat); 259 } 260 261 static bool_t 262 svc_dg_getargs(SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr) 263 { 264 return (*xdr_args)(&(su_data(xprt)->su_xdrs), args_ptr); 265 } 266 267 static bool_t 268 svc_dg_freeargs(SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr) 269 { 270 XDR *xdrs; 271 272 _DIAGASSERT(xprt != NULL); 273 274 xdrs = &(su_data(xprt)->su_xdrs); 275 xdrs->x_op = XDR_FREE; 276 return (*xdr_args)(xdrs, args_ptr); 277 } 278 279 static void 280 svc_dg_destroy(SVCXPRT *xprt) 281 { 282 struct svc_dg_data *su; 283 284 _DIAGASSERT(xprt != NULL); 285 286 su = su_data(xprt); 287 288 xprt_unregister(xprt); 289 if (xprt->xp_fd != -1) 290 (void)close(xprt->xp_fd); 291 XDR_DESTROY(&(su->su_xdrs)); 292 (void) mem_free(rpc_buffer(xprt), su->su_iosz); 293 (void) mem_free(su, sizeof (*su)); 294 if (xprt->xp_rtaddr.buf) 295 (void) mem_free(xprt->xp_rtaddr.buf, xprt->xp_rtaddr.maxlen); 296 if (xprt->xp_ltaddr.buf) 297 (void) mem_free(xprt->xp_ltaddr.buf, xprt->xp_ltaddr.maxlen); 298 if (xprt->xp_tp) 299 (void) free(xprt->xp_tp); 300 (void) mem_free(xprt, sizeof (SVCXPRT)); 301 } 302 303 static bool_t 304 /*ARGSUSED*/ 305 svc_dg_control(SVCXPRT *xprt, const u_int rq, void *in) 306 { 307 return (FALSE); 308 } 309 310 static void 311 svc_dg_ops(SVCXPRT *xprt) 312 { 313 static struct xp_ops ops; 314 static struct xp_ops2 ops2; 315 #ifdef _REENTRANT 316 extern mutex_t ops_lock; 317 #endif 318 319 _DIAGASSERT(xprt != NULL); 320 321 /* VARIABLES PROTECTED BY ops_lock: ops */ 322 323 mutex_lock(&ops_lock); 324 if (ops.xp_recv == NULL) { 325 ops.xp_recv = svc_dg_recv; 326 ops.xp_stat = svc_dg_stat; 327 ops.xp_getargs = svc_dg_getargs; 328 ops.xp_reply = svc_dg_reply; 329 ops.xp_freeargs = svc_dg_freeargs; 330 ops.xp_destroy = svc_dg_destroy; 331 ops2.xp_control = svc_dg_control; 332 } 333 xprt->xp_ops = &ops; 334 xprt->xp_ops2 = &ops2; 335 mutex_unlock(&ops_lock); 336 } 337 338 /* The CACHING COMPONENT */ 339 340 /* 341 * Could have been a separate file, but some part of it depends upon the 342 * private structure of the client handle. 343 * 344 * Fifo cache for cl server 345 * Copies pointers to reply buffers into fifo cache 346 * Buffers are sent again if retransmissions are detected. 347 */ 348 349 #define SPARSENESS 4 /* 75% sparse */ 350 351 #define ALLOC(type, size) \ 352 mem_alloc((sizeof (type) * (size))) 353 354 #define MEMZERO(addr, type, size) \ 355 (void) memset((void *) (addr), 0, sizeof (type) * (int) (size)) 356 357 #define FREE(addr, type, size) \ 358 mem_free((addr), (sizeof (type) * (size))) 359 360 /* 361 * An entry in the cache 362 */ 363 typedef struct cache_node *cache_ptr; 364 struct cache_node { 365 /* 366 * Index into cache is xid, proc, vers, prog and address 367 */ 368 u_int32_t cache_xid; 369 rpcproc_t cache_proc; 370 rpcvers_t cache_vers; 371 rpcprog_t cache_prog; 372 struct netbuf cache_addr; 373 /* 374 * The cached reply and length 375 */ 376 char *cache_reply; 377 size_t cache_replylen; 378 /* 379 * Next node on the list, if there is a collision 380 */ 381 cache_ptr cache_next; 382 }; 383 384 /* 385 * The entire cache 386 */ 387 struct cl_cache { 388 u_int uc_size; /* size of cache */ 389 cache_ptr *uc_entries; /* hash table of entries in cache */ 390 cache_ptr *uc_fifo; /* fifo list of entries in cache */ 391 u_int uc_nextvictim; /* points to next victim in fifo list */ 392 rpcprog_t uc_prog; /* saved program number */ 393 rpcvers_t uc_vers; /* saved version number */ 394 rpcproc_t uc_proc; /* saved procedure number */ 395 }; 396 397 398 /* 399 * the hashing function 400 */ 401 #define CACHE_LOC(transp, xid) \ 402 (xid % (SPARSENESS * ((struct cl_cache *) \ 403 su_data(transp)->su_cache)->uc_size)) 404 405 #ifdef _REENTRANT 406 extern mutex_t dupreq_lock; 407 #endif 408 409 /* 410 * Enable use of the cache. Returns 1 on success, 0 on failure. 411 * Note: there is no disable. 412 */ 413 static const char cache_enable_str[] = "svc_enablecache: %s %s"; 414 static const char alloc_err[] = "could not allocate cache "; 415 static const char enable_err[] = "cache already enabled"; 416 417 int 418 svc_dg_enablecache(SVCXPRT *transp, u_int size) 419 { 420 struct svc_dg_data *su; 421 struct cl_cache *uc; 422 423 _DIAGASSERT(transp != NULL); 424 425 su = su_data(transp); 426 427 mutex_lock(&dupreq_lock); 428 if (su->su_cache != NULL) { 429 (void) warnx(cache_enable_str, enable_err, " "); 430 mutex_unlock(&dupreq_lock); 431 return (0); 432 } 433 uc = ALLOC(struct cl_cache, 1); 434 if (uc == NULL) { 435 warnx(cache_enable_str, alloc_err, " "); 436 mutex_unlock(&dupreq_lock); 437 return (0); 438 } 439 uc->uc_size = size; 440 uc->uc_nextvictim = 0; 441 uc->uc_entries = ALLOC(cache_ptr, size * SPARSENESS); 442 if (uc->uc_entries == NULL) { 443 warnx(cache_enable_str, alloc_err, "data"); 444 FREE(uc, struct cl_cache, 1); 445 mutex_unlock(&dupreq_lock); 446 return (0); 447 } 448 MEMZERO(uc->uc_entries, cache_ptr, size * SPARSENESS); 449 uc->uc_fifo = ALLOC(cache_ptr, size); 450 if (uc->uc_fifo == NULL) { 451 warnx(cache_enable_str, alloc_err, "fifo"); 452 FREE(uc->uc_entries, cache_ptr, size * SPARSENESS); 453 FREE(uc, struct cl_cache, 1); 454 mutex_unlock(&dupreq_lock); 455 return (0); 456 } 457 MEMZERO(uc->uc_fifo, cache_ptr, size); 458 su->su_cache = (char *)(void *)uc; 459 mutex_unlock(&dupreq_lock); 460 return (1); 461 } 462 463 /* 464 * Set an entry in the cache. It assumes that the uc entry is set from 465 * the earlier call to cache_get() for the same procedure. This will always 466 * happen because cache_get() is calle by svc_dg_recv and cache_set() is called 467 * by svc_dg_reply(). All this hoopla because the right RPC parameters are 468 * not available at svc_dg_reply time. 469 */ 470 471 static const char cache_set_str[] = "cache_set: %s"; 472 static const char cache_set_err1[] = "victim not found"; 473 static const char cache_set_err2[] = "victim alloc failed"; 474 static const char cache_set_err3[] = "could not allocate new rpc buffer"; 475 476 static void 477 cache_set(SVCXPRT *xprt, size_t replylen) 478 { 479 cache_ptr victim; 480 cache_ptr *vicp; 481 struct svc_dg_data *su; 482 struct cl_cache *uc; 483 u_int loc; 484 char *newbuf; 485 #ifdef RPC_CACHE_DEBUG 486 struct netconfig *nconf; 487 char *uaddr; 488 #endif 489 490 _DIAGASSERT(xprt != NULL); 491 492 su = su_data(xprt); 493 uc = (struct cl_cache *) su->su_cache; 494 495 mutex_lock(&dupreq_lock); 496 /* 497 * Find space for the new entry, either by 498 * reusing an old entry, or by mallocing a new one 499 */ 500 victim = uc->uc_fifo[uc->uc_nextvictim]; 501 if (victim != NULL) { 502 loc = CACHE_LOC(xprt, victim->cache_xid); 503 for (vicp = &uc->uc_entries[loc]; 504 *vicp != NULL && *vicp != victim; 505 vicp = &(*vicp)->cache_next) 506 ; 507 if (*vicp == NULL) { 508 warnx(cache_set_str, cache_set_err1); 509 mutex_unlock(&dupreq_lock); 510 return; 511 } 512 *vicp = victim->cache_next; /* remove from cache */ 513 newbuf = victim->cache_reply; 514 } else { 515 victim = ALLOC(struct cache_node, 1); 516 if (victim == NULL) { 517 warnx(cache_set_str, cache_set_err2); 518 mutex_unlock(&dupreq_lock); 519 return; 520 } 521 newbuf = mem_alloc(su->su_iosz); 522 if (newbuf == NULL) { 523 warnx(cache_set_str, cache_set_err3); 524 FREE(victim, struct cache_node, 1); 525 mutex_unlock(&dupreq_lock); 526 return; 527 } 528 } 529 530 /* 531 * Store it away 532 */ 533 #ifdef RPC_CACHE_DEBUG 534 if (nconf = getnetconfigent(xprt->xp_netid)) { 535 uaddr = taddr2uaddr(nconf, &xprt->xp_rtaddr); 536 freenetconfigent(nconf); 537 printf( 538 "cache set for xid= %x prog=%d vers=%d proc=%d for rmtaddr=%s\n", 539 su->su_xid, uc->uc_prog, uc->uc_vers, 540 uc->uc_proc, uaddr); 541 free(uaddr); 542 } 543 #endif 544 victim->cache_replylen = replylen; 545 victim->cache_reply = rpc_buffer(xprt); 546 rpc_buffer(xprt) = newbuf; 547 _DIAGASSERT(__type_fit(u_int, su->su_iosz)); 548 xdrmem_create(&(su->su_xdrs), rpc_buffer(xprt), (u_int)su->su_iosz, 549 XDR_ENCODE); 550 victim->cache_xid = su->su_xid; 551 victim->cache_proc = uc->uc_proc; 552 victim->cache_vers = uc->uc_vers; 553 victim->cache_prog = uc->uc_prog; 554 victim->cache_addr = xprt->xp_rtaddr; 555 victim->cache_addr.buf = ALLOC(char, xprt->xp_rtaddr.len); 556 (void) memcpy(victim->cache_addr.buf, xprt->xp_rtaddr.buf, 557 (size_t)xprt->xp_rtaddr.len); 558 loc = CACHE_LOC(xprt, victim->cache_xid); 559 victim->cache_next = uc->uc_entries[loc]; 560 uc->uc_entries[loc] = victim; 561 uc->uc_fifo[uc->uc_nextvictim++] = victim; 562 uc->uc_nextvictim %= uc->uc_size; 563 mutex_unlock(&dupreq_lock); 564 } 565 566 /* 567 * Try to get an entry from the cache 568 * return 1 if found, 0 if not found and set the stage for cache_set() 569 */ 570 static int 571 cache_get(SVCXPRT *xprt, struct rpc_msg *msg, char **replyp, size_t *replylenp) 572 { 573 u_int loc; 574 cache_ptr ent; 575 struct svc_dg_data *su; 576 struct cl_cache *uc; 577 #ifdef RPC_CACHE_DEBUG 578 struct netconfig *nconf; 579 char *uaddr; 580 #endif 581 582 _DIAGASSERT(xprt != NULL); 583 _DIAGASSERT(msg != NULL); 584 _DIAGASSERT(replyp != NULL); 585 _DIAGASSERT(replylenp != NULL); 586 587 su = su_data(xprt); 588 uc = (struct cl_cache *) su->su_cache; 589 590 mutex_lock(&dupreq_lock); 591 loc = CACHE_LOC(xprt, su->su_xid); 592 for (ent = uc->uc_entries[loc]; ent != NULL; ent = ent->cache_next) { 593 if (ent->cache_xid == su->su_xid && 594 ent->cache_proc == msg->rm_call.cb_proc && 595 ent->cache_vers == msg->rm_call.cb_vers && 596 ent->cache_prog == msg->rm_call.cb_prog && 597 ent->cache_addr.len == xprt->xp_rtaddr.len && 598 (memcmp(ent->cache_addr.buf, xprt->xp_rtaddr.buf, 599 xprt->xp_rtaddr.len) == 0)) { 600 #ifdef RPC_CACHE_DEBUG 601 if (nconf = getnetconfigent(xprt->xp_netid)) { 602 uaddr = taddr2uaddr(nconf, &xprt->xp_rtaddr); 603 freenetconfigent(nconf); 604 printf( 605 "cache entry found for xid=%x prog=%d vers=%d proc=%d for rmtaddr=%s\n", 606 su->su_xid, msg->rm_call.cb_prog, 607 msg->rm_call.cb_vers, 608 msg->rm_call.cb_proc, uaddr); 609 free(uaddr); 610 } 611 #endif 612 *replyp = ent->cache_reply; 613 *replylenp = ent->cache_replylen; 614 mutex_unlock(&dupreq_lock); 615 return (1); 616 } 617 } 618 /* 619 * Failed to find entry 620 * Remember a few things so we can do a set later 621 */ 622 uc->uc_proc = msg->rm_call.cb_proc; 623 uc->uc_vers = msg->rm_call.cb_vers; 624 uc->uc_prog = msg->rm_call.cb_prog; 625 mutex_unlock(&dupreq_lock); 626 return (0); 627 } 628
Indexes created Tue Sep 23 02:09:52 GMT 2025