1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright 2012 Marcel Telka <marcel@telka.sk> 24 * Copyright 2013 Nexenta Systems, Inc. All rights reserved. 25 * Copyright 2018 OmniOS Community Edition (OmniOSce) Association. 26 */ 27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 /* 30 * Portions of this source code were derived from Berkeley 31 * 4.3 BSD under license from the Regents of the University of 32 * California. 33 */ 34 35 /* 36 * svc.h, Server-side remote procedure call interface. 37 */ 38 39 #ifndef _RPC_SVC_H 40 #define _RPC_SVC_H 41 42 #include <rpc/rpc_com.h> 43 #include <rpc/rpc_msg.h> 44 #include <sys/tihdr.h> 45 #include <sys/poll.h> 46 #include <sys/tsol/label.h> 47 48 #ifdef _KERNEL 49 #include <rpc/svc_auth.h> 50 #include <sys/callb.h> 51 #endif /* _KERNEL */ 52 53 /* 54 * This interface must manage two items concerning remote procedure calling: 55 * 56 * 1) An arbitrary number of transport connections upon which rpc requests 57 * are received. They are created and registered by routines in svc_generic.c, 58 * svc_vc.c and svc_dg.c; they in turn call xprt_register and 59 * xprt_unregister. 60 * 61 * 2) An arbitrary number of locally registered services. Services are 62 * described by the following four data: program number, version number, 63 * "service dispatch" function, a transport handle, and a boolean that 64 * indicates whether or not the exported program should be registered with a 65 * local binder service; if true the program's number and version and the 66 * address from the transport handle are registered with the binder. 67 * These data are registered with rpcbind via svc_reg(). 68 * 69 * A service's dispatch function is called whenever an rpc request comes in 70 * on a transport. The request's program and version numbers must match 71 * those of the registered service. The dispatch function is passed two 72 * parameters, struct svc_req * and SVCXPRT *, defined below. 73 */ 74 75 #ifdef __cplusplus 76 extern "C" { 77 #endif 78 79 /* 80 * Server-side transport handles. 81 * The actual type definitions are below. 82 */ 83 #ifdef _KERNEL 84 typedef struct __svcmasterxprt SVCMASTERXPRT; /* Master transport handle */ 85 typedef struct __svcxprt SVCXPRT; /* Per-thread clone handle */ 86 typedef struct __svcpool SVCPOOL; /* Kernel thread pool */ 87 #else /* _KERNEL */ 88 typedef struct __svcxprt SVCXPRT; /* Server transport handle */ 89 #endif /* _KERNEL */ 90 91 /* 92 * Prototype of error handler callback 93 */ 94 #ifndef _KERNEL 95 typedef void (*svc_errorhandler_t)(const SVCXPRT* svc, const bool_t isAConn); 96 #endif 97 98 /* 99 * Service request. 100 * 101 * PSARC 2003/523 Contract Private Interface 102 * svc_req 103 * Changes must be reviewed by Solaris File Sharing 104 * Changes must be communicated to contract-2003-523@sun.com 105 */ 106 struct svc_req { 107 rpcprog_t rq_prog; /* service program number */ 108 rpcvers_t rq_vers; /* service protocol version */ 109 rpcproc_t rq_proc; /* the desired procedure */ 110 struct opaque_auth rq_cred; /* raw creds from the wire */ 111 caddr_t rq_clntcred; /* read only cooked cred */ 112 SVCXPRT *rq_xprt; /* associated transport */ 113 bslabel_t *rq_label; /* TSOL label of the request */ 114 }; 115 116 #ifdef _KERNEL 117 struct dupreq { 118 uint32_t dr_xid; 119 rpcproc_t dr_proc; 120 rpcvers_t dr_vers; 121 rpcprog_t dr_prog; 122 struct netbuf dr_addr; 123 struct netbuf dr_resp; 124 void (*dr_resfree)(); 125 int dr_status; 126 struct dupreq *dr_next; 127 struct dupreq *dr_chain; 128 }; 129 130 /* 131 * States of requests for duplicate request caching. 132 */ 133 #define DUP_NEW 0x00 /* new entry */ 134 #define DUP_INPROGRESS 0x01 /* request already going */ 135 #define DUP_DONE 0x02 /* request done */ 136 #define DUP_DROP 0x03 /* request dropped */ 137 #define DUP_ERROR 0x04 /* error in dup req cache */ 138 139 /* 140 * Prototype for a service dispatch routine. 141 */ 142 typedef void (SVC_DISPATCH)(struct svc_req *, SVCXPRT *); 143 144 /* 145 * The service provider callout. 146 * Each entry identifies a dispatch routine to be called 147 * for a given RPC program number and a version fitting 148 * into the registered range. 149 */ 150 typedef struct { 151 rpcprog_t sc_prog; /* RPC Program number */ 152 rpcvers_t sc_versmin; /* Min version number */ 153 rpcvers_t sc_versmax; /* Max version number */ 154 SVC_DISPATCH *sc_dispatch; /* Dispatch routine */ 155 } SVC_CALLOUT; 156 157 /* 158 * Table of service provider `callouts' for an RPC 159 * transport handle. If sct_free is TRUE then transport 160 * destructor is supposed to deallocate this table. 161 */ 162 typedef struct { 163 size_t sct_size; /* Number of entries */ 164 bool_t sct_free; /* Deallocate if true */ 165 SVC_CALLOUT *sct_sc; /* Callout entries */ 166 } SVC_CALLOUT_TABLE; 167 168 struct svc_ops { 169 bool_t (*xp_recv)(SVCXPRT *, mblk_t *, struct rpc_msg *); 170 /* receive incoming requests */ 171 bool_t (*xp_getargs)(SVCXPRT *, xdrproc_t, caddr_t); 172 /* get arguments */ 173 bool_t (*xp_reply)(SVCXPRT *, struct rpc_msg *); 174 /* send reply */ 175 bool_t (*xp_freeargs)(SVCXPRT *, xdrproc_t, caddr_t); 176 /* free mem allocated for args */ 177 void (*xp_destroy)(SVCMASTERXPRT *); 178 /* destroy this struct */ 179 int (*xp_dup)(struct svc_req *, caddr_t, int, 180 struct dupreq **, bool_t *); 181 /* check for dup */ 182 void (*xp_dupdone)(struct dupreq *, caddr_t, void (*)(), int, int); 183 /* mark dup entry as completed */ 184 int32_t *(*xp_getres)(SVCXPRT *, int); 185 /* get pointer to response buffer */ 186 void (*xp_freeres)(SVCXPRT *); 187 /* destroy pre-serialized response */ 188 void (*xp_clone_destroy)(SVCXPRT *); 189 /* destroy a clone xprt */ 190 void (*xp_start)(SVCMASTERXPRT *); 191 /* `ready-to-receive' */ 192 void (*xp_clone_xprt)(SVCXPRT *, SVCXPRT *); 193 /* transport specific clone function */ 194 void (*xp_tattrs)(SVCXPRT *, int, void **); 195 /* transport specific hold function */ 196 void (*xp_hold)(queue_t *); 197 /* transport specific release function */ 198 void (*xp_release)(queue_t *, mblk_t *, bool_t); 199 }; 200 201 #define SVC_TATTR_ADDRMASK 1 202 203 #else /* _KERNEL */ 204 /* 205 * Service control requests 206 */ 207 #define SVCGET_VERSQUIET 1 208 #define SVCSET_VERSQUIET 2 209 #define SVCGET_XID 4 210 #define SVCSET_KEEPALIVE 5 211 #define SVCSET_CONNMAXREC 6 212 #define SVCGET_CONNMAXREC 7 213 #define SVCGET_RECVERRHANDLER 8 214 #define SVCSET_RECVERRHANDLER 9 215 216 enum xprt_stat { 217 XPRT_DIED, 218 XPRT_MOREREQS, 219 XPRT_IDLE 220 }; 221 222 struct xp_ops { 223 #ifdef __STDC__ 224 bool_t (*xp_recv)(SVCXPRT *, struct rpc_msg *); 225 /* receive incoming requests */ 226 enum xprt_stat (*xp_stat)(SVCXPRT *); 227 /* get transport status */ 228 bool_t (*xp_getargs)(SVCXPRT *, xdrproc_t, caddr_t); 229 /* get arguments */ 230 bool_t (*xp_reply)(SVCXPRT *, struct rpc_msg *); 231 /* send reply */ 232 bool_t (*xp_freeargs)(SVCXPRT *, xdrproc_t, caddr_t); 233 /* free mem allocated for args */ 234 void (*xp_destroy)(SVCXPRT *); 235 /* destroy this struct */ 236 bool_t (*xp_control)(SVCXPRT *, const uint_t, void *); 237 /* catch-all control function */ 238 #else /* __STDC__ */ 239 bool_t (*xp_recv)(); /* receive incoming requests */ 240 enum xprt_stat (*xp_stat)(); /* get transport status */ 241 bool_t (*xp_getargs)(); /* get arguments */ 242 bool_t (*xp_reply)(); /* send reply */ 243 bool_t (*xp_freeargs)(); /* free mem allocated for args */ 244 void (*xp_destroy)(); /* destroy this struct */ 245 bool_t (*xp_control)(); /* catch-all control function */ 246 #endif /* __STDC__ */ 247 }; 248 #endif /* _KERNEL */ 249 250 #ifdef _KERNEL 251 /* 252 * SVCPOOL 253 * Kernel RPC server-side thread pool structure. 254 */ 255 typedef struct __svcxprt_qnode __SVCXPRT_QNODE; /* Defined in svc.c */ 256 257 struct __svcpool { 258 /* 259 * Thread pool variables. 260 * 261 * The pool's thread lock p_thread_lock protects: 262 * - p_threads, p_detached_threads, p_reserved_threads and p_closing 263 * The pool's request lock protects: 264 * - p_asleep, p_drowsy, p_reqs, p_size, p_walkers, p_req_cv. 265 * The following fields are `initialized constants': 266 * - p_id, p_stksize, p_timeout. 267 * Access to p_next and p_prev is protected by the pool 268 * list lock. 269 */ 270 SVCPOOL *p_next; /* Next pool in the list */ 271 SVCPOOL *p_prev; /* Prev pool in the list */ 272 int p_id; /* Pool id */ 273 int p_threads; /* Non-detached threads */ 274 int p_detached_threads; /* Detached threads */ 275 int p_maxthreads; /* Max threads in the pool */ 276 int p_redline; /* `Redline' for the pool */ 277 int p_reserved_threads; /* Reserved threads */ 278 kmutex_t p_thread_lock; /* Thread lock */ 279 int p_asleep; /* Asleep threads */ 280 int p_drowsy; /* Drowsy flag */ 281 kcondvar_t p_req_cv; /* svc_poll() sleep var. */ 282 clock_t p_timeout; /* svc_poll() timeout */ 283 kmutex_t p_req_lock; /* Request lock */ 284 int p_reqs; /* Pending requests */ 285 int p_walkers; /* Walking threads */ 286 int p_max_same_xprt; /* Max reqs from the xprt */ 287 int p_stksize; /* Stack size for svc_run */ 288 bool_t p_closing : 1; /* Pool is closing */ 289 290 /* 291 * Thread creator variables. 292 * The `creator signaled' flag is turned on when a signal is send 293 * to the creator thread (to create a new service thread). The 294 * creator clears when the thread is created. The protocol is not 295 * to signal the creator thread when the flag is on. However, 296 * a new thread should signal the creator if there are more 297 * requests in the queue. 298 * 299 * When the pool is closing (ie it has been already unregistered from 300 * the pool list) the last thread on the last transport should turn 301 * the p_creator_exit flag on. This tells the creator thread to 302 * free the pool structure and exit. 303 */ 304 bool_t p_creator_signaled : 1; /* Create requested flag */ 305 bool_t p_creator_exit : 1; /* If true creator exits */ 306 kcondvar_t p_creator_cv; /* Creator cond. variable */ 307 kmutex_t p_creator_lock; /* Creator lock */ 308 309 /* 310 * Doubly linked list containing `registered' master transport handles. 311 * There is no special structure for a list node. Instead the 312 * SVCMASTERXPRT structure has the xp_next and xp_prev fields. 313 * 314 * The p_lrwlock protects access to xprt->xp_next and xprt->xp_prev. 315 * A service thread should also acquire a reader lock before accessing 316 * any transports it is no longer linked to (to prevent them from 317 * being destroyed). 318 * 319 * The list lock governs also the `pool is closing' flag. 320 */ 321 size_t p_lcount; /* Current count */ 322 SVCMASTERXPRT *p_lhead; /* List head */ 323 krwlock_t p_lrwlock; /* R/W lock */ 324 325 /* 326 * Circular linked list for the `xprt-ready' queue (FIFO). 327 * Must be initialized with svc_xprt_qinit() before it is used. 328 * 329 * The writer's end is protected by the pool's request lock 330 * (pool->p_req_lock). The reader's end is protected by q_end_lock. 331 * 332 * When the queue is full the p_qoverflow flag is raised. It stays 333 * on until all the pending request are drained. 334 */ 335 size_t p_qsize; /* Number of queue nodes */ 336 int p_qoverflow : 1; /* Overflow flag */ 337 __SVCXPRT_QNODE *p_qbody; /* Queue body (array) */ 338 __SVCXPRT_QNODE *p_qtop; /* Writer's end of FIFO */ 339 __SVCXPRT_QNODE *p_qend; /* Reader's end of FIFO */ 340 kmutex_t p_qend_lock; /* Reader's end lock */ 341 342 /* 343 * Userspace thread creator variables. 344 * Thread creation is actually done in userland, via a thread 345 * that is parked in the kernel. When that thread is signaled, 346 * it returns back down to the daemon from whence it came and 347 * does the lwp create. 348 * 349 * A parallel "creator" thread runs in the kernel. That is the 350 * thread that will signal for the user thread to return to 351 * userland and do its work. 352 * 353 * Since the thread doesn't always exist (there could be a race 354 * if two threads are created in rapid succession), we set 355 * p_signal_create_thread to FALSE when we're ready to accept work. 356 * 357 * p_user_exit is set to true when the service pool is about 358 * to close. This is done so that the user creation thread 359 * can be informed and cleanup any userland state. 360 */ 361 362 bool_t p_signal_create_thread : 1; /* Create requested flag */ 363 bool_t p_user_exit : 1; /* If true creator exits */ 364 bool_t p_user_waiting : 1; /* Thread waiting for work */ 365 kcondvar_t p_user_cv; /* Creator cond. variable */ 366 kmutex_t p_user_lock; /* Creator lock */ 367 void (*p_offline)(); /* callout for unregister */ 368 void (*p_shutdown)(); /* callout for shutdown */ 369 370 size_t p_size; /* Total size of queued msgs */ 371 }; 372 373 /* 374 * Server side transport handle (SVCMASTERXPRT). 375 * xprt->xp_req_lock governs the following fields in xprt: 376 * xp_req_head, xp_req_tail. 377 * xprt->xp_thread_lock governs the following fields in xprt: 378 * xp_threads, xp_detached_threads. 379 * 380 * xp_req_tail is only valid if xp_req_head is non-NULL 381 * 382 * The xp_threads count is the number of attached threads. These threads 383 * are able to handle new requests, and it is expected that they will not 384 * block for a very long time handling a given request. The 385 * xp_detached_threads count is the number of threads that have detached 386 * themselves from the transport. These threads can block indefinitely 387 * while handling a request. Once they complete the request, they exit. 388 * 389 * A kernel service provider may register a callback function "closeproc" 390 * for a transport. When the transport is closing the last exiting attached 391 * thread - xp_threads goes to zero - it calls the callback function, passing 392 * it a reference to the transport. This call is made with xp_thread_lock 393 * held, so any cleanup bookkeeping it does should be done quickly. 394 * 395 * When the transport is closing the last exiting thread is supposed 396 * to destroy/free the data structure. 397 */ 398 typedef struct __svcxprt_common { 399 struct file *xpc_fp; 400 struct svc_ops *xpc_ops; 401 queue_t *xpc_wq; /* queue to write onto */ 402 cred_t *xpc_cred; /* cached cred for server to use */ 403 int32_t xpc_type; /* transport type */ 404 int xpc_msg_size; /* TSDU or TIDU size */ 405 struct netbuf xpc_rtaddr; /* remote transport address */ 406 struct netbuf xpc_lcladdr; /* local transport address */ 407 char *xpc_netid; /* network token */ 408 SVC_CALLOUT_TABLE *xpc_sct; 409 } __SVCXPRT_COMMON; 410 411 #define xp_fp xp_xpc.xpc_fp 412 #define xp_ops xp_xpc.xpc_ops 413 #define xp_wq xp_xpc.xpc_wq 414 #define xp_cred xp_xpc.xpc_cred 415 #define xp_type xp_xpc.xpc_type 416 #define xp_msg_size xp_xpc.xpc_msg_size 417 #define xp_rtaddr xp_xpc.xpc_rtaddr 418 #define xp_lcladdr xp_xpc.xpc_lcladdr 419 #define xp_sct xp_xpc.xpc_sct 420 #define xp_netid xp_xpc.xpc_netid 421 422 struct __svcmasterxprt { 423 SVCMASTERXPRT *xp_next; /* Next transport in the list */ 424 SVCMASTERXPRT *xp_prev; /* Prev transport in the list */ 425 __SVCXPRT_COMMON xp_xpc; /* Fields common with the clone */ 426 SVCPOOL *xp_pool; /* Pointer to the pool */ 427 mblk_t *xp_req_head; /* Request queue head */ 428 mblk_t *xp_req_tail; /* Request queue tail */ 429 kmutex_t xp_req_lock; /* Request lock */ 430 int xp_threads; /* Current num. of attached threads */ 431 int xp_detached_threads; /* num. of detached threads */ 432 kmutex_t xp_thread_lock; /* Thread count lock */ 433 void (*xp_closeproc)(const SVCMASTERXPRT *); 434 /* optional; see comments above */ 435 struct netbuf xp_addrmask; /* address mask */ 436 437 caddr_t xp_p2; /* private: for use by svc ops */ 438 439 int xp_full : 1; /* xprt is full */ 440 int xp_enable : 1; /* xprt needs to be enabled */ 441 int xp_reqs; /* number of requests queued */ 442 size_t xp_size; /* total size of queued msgs */ 443 }; 444 445 /* 446 * Service thread `clone' transport handle (SVCXPRT) 447 * 448 * PSARC 2003/523 Contract Private Interface 449 * SVCXPRT 450 * Changes must be reviewed by Solaris File Sharing 451 * Changes must be communicated to contract-2003-523@sun.com 452 * 453 * The xp_p2buf buffer is used as the storage for a transport type 454 * specific structure. It is private for the svc ops for a given 455 * transport type. 456 */ 457 458 #define SVC_P2LEN 128 459 460 struct __svcxprt { 461 __SVCXPRT_COMMON xp_xpc; 462 SVCMASTERXPRT *xp_master; /* back ptr to master */ 463 464 /* The following fileds are on a per-thread basis */ 465 callb_cpr_t *xp_cprp; /* unused padding for Contract */ 466 bool_t xp_reserved : 1; /* is thread reserved? */ 467 bool_t xp_detached : 1; /* is thread detached? */ 468 int xp_same_xprt; /* Reqs from the same xprt */ 469 470 /* The following fields are used on a per-request basis */ 471 struct opaque_auth xp_verf; /* raw response verifier */ 472 SVCAUTH xp_auth; /* auth flavor of current req */ 473 void *xp_cookie; /* a cookie */ 474 uint32_t xp_xid; /* id */ 475 XDR xp_xdrin; /* input xdr stream */ 476 XDR xp_xdrout; /* output xdr stream */ 477 478 /* Private for svc ops */ 479 char xp_p2buf[SVC_P2LEN]; /* udp_data or cots_data_t */ 480 /* or clone_rdma_data_t */ 481 }; 482 #else /* _KERNEL */ 483 struct __svcxprt { 484 int xp_fd; 485 #define xp_sock xp_fd 486 ushort_t xp_port; 487 /* 488 * associated port number. 489 * Obsolete, but still used to 490 * specify whether rendezvouser 491 * or normal connection 492 */ 493 struct xp_ops *xp_ops; 494 int xp_addrlen; /* length of remote addr. Obsoleted */ 495 char *xp_tp; /* transport provider device name */ 496 char *xp_netid; /* network token */ 497 struct netbuf xp_ltaddr; /* local transport address */ 498 struct netbuf xp_rtaddr; /* remote transport address */ 499 char xp_raddr[16]; /* remote address. Now obsoleted */ 500 struct opaque_auth xp_verf; /* raw response verifier */ 501 caddr_t xp_p1; /* private: for use by svc ops */ 502 caddr_t xp_p2; /* private: for use by svc ops */ 503 caddr_t xp_p3; /* private: for use by svc lib */ 504 int xp_type; /* transport type */ 505 /* 506 * callback on client death 507 * First parameter is the current structure, 508 * Second parameter : 509 * - FALSE for the service listener 510 * - TRUE for a real connected socket 511 */ 512 svc_errorhandler_t xp_closeclnt; 513 }; 514 #endif /* _KERNEL */ 515 516 /* 517 * Approved way of getting address of caller, 518 * address mask, and netid of transport. 519 */ 520 #define svc_getrpccaller(x) (&(x)->xp_rtaddr) 521 #ifdef _KERNEL 522 #define svc_getcaller(x) (&(x)->xp_rtaddr.buf) 523 #define svc_getaddrmask(x) (&(x)->xp_master->xp_addrmask) 524 #define svc_getnetid(x) ((x)->xp_netid) 525 #endif /* _KERNEL */ 526 527 /* 528 * Operations defined on an SVCXPRT handle 529 */ 530 531 #ifdef _KERNEL 532 533 #define SVC_GETADDRMASK(clone_xprt, attrflag, tattr) \ 534 (*(clone_xprt)->xp_ops->xp_tattrs)((clone_xprt), (attrflag), (tattr)) 535 536 #define SVC_CLONE_XPRT(src_xprt, dst_xprt) \ 537 if ((src_xprt)->xp_ops->xp_clone_xprt) \ 538 (*(src_xprt)->xp_ops->xp_clone_xprt) \ 539 (src_xprt, dst_xprt) 540 541 #define SVC_HOLD(xprt) \ 542 if ((xprt)->xp_ops->xp_hold) \ 543 (*(xprt)->xp_ops->xp_hold)((xprt)->xp_wq) 544 545 #define SVC_RELE(xprt, mp, enable) \ 546 if ((xprt)->xp_ops->xp_release) \ 547 (*(xprt)->xp_ops->xp_release)((xprt)->xp_wq, (mp), (enable)) 548 549 #define SVC_RECV(clone_xprt, mp, msg) \ 550 (*(clone_xprt)->xp_ops->xp_recv)((clone_xprt), (mp), (msg)) 551 552 /* 553 * PSARC 2003/523 Contract Private Interface 554 * SVC_GETARGS 555 * Changes must be reviewed by Solaris File Sharing 556 * Changes must be communicated to contract-2003-523@sun.com 557 */ 558 #define SVC_GETARGS(clone_xprt, xargs, argsp) \ 559 (*(clone_xprt)->xp_ops->xp_getargs)((clone_xprt), (xargs), (argsp)) 560 561 #define SVC_REPLY(clone_xprt, msg) \ 562 (*(clone_xprt)->xp_ops->xp_reply) ((clone_xprt), (msg)) 563 564 #define SVC_FREEARGS(clone_xprt, xargs, argsp) \ 565 (*(clone_xprt)->xp_ops->xp_freeargs)((clone_xprt), (xargs), (argsp)) 566 567 #define SVC_GETRES(clone_xprt, size) \ 568 (*(clone_xprt)->xp_ops->xp_getres)((clone_xprt), (size)) 569 570 #define SVC_FREERES(clone_xprt) \ 571 (*(clone_xprt)->xp_ops->xp_freeres)(clone_xprt) 572 573 #define SVC_DESTROY(xprt) \ 574 (*(xprt)->xp_ops->xp_destroy)(xprt) 575 576 /* 577 * PSARC 2003/523 Contract Private Interfaces 578 * SVC_DUP, SVC_DUPDONE, SVC_DUP_EXT, SVC_DUPDONE_EXT 579 * Changes must be reviewed by Solaris File Sharing 580 * Changes must be communicated to contract-2003-523@sun.com 581 * 582 * SVC_DUP and SVC_DUPDONE are defined here for backward compatibility. 583 */ 584 #define SVC_DUP_EXT(clone_xprt, req, res, size, drpp, dupcachedp) \ 585 (*(clone_xprt)->xp_ops->xp_dup)(req, res, size, drpp, dupcachedp) 586 587 #define SVC_DUPDONE_EXT(clone_xprt, dr, res, resfree, size, status) \ 588 (*(clone_xprt)->xp_ops->xp_dupdone)(dr, res, resfree, size, status) 589 590 #define SVC_DUP(clone_xprt, req, res, size, drpp) \ 591 (*(clone_xprt)->xp_ops->xp_dup)(req, res, size, drpp, NULL) 592 593 #define SVC_DUPDONE(clone_xprt, dr, res, size, status) \ 594 (*(clone_xprt)->xp_ops->xp_dupdone)(dr, res, NULL, size, status) 595 596 #define SVC_CLONE_DESTROY(clone_xprt) \ 597 (*(clone_xprt)->xp_ops->xp_clone_destroy)(clone_xprt) 598 599 600 #define SVC_START(xprt) \ 601 (*(xprt)->xp_ops->xp_start)(xprt) 602 603 #else /* _KERNEL */ 604 605 #define SVC_RECV(xprt, msg) \ 606 (*(xprt)->xp_ops->xp_recv)((xprt), (msg)) 607 #define svc_recv(xprt, msg) \ 608 (*(xprt)->xp_ops->xp_recv)((xprt), (msg)) 609 610 #define SVC_STAT(xprt) \ 611 (*(xprt)->xp_ops->xp_stat)(xprt) 612 #define svc_stat(xprt) \ 613 (*(xprt)->xp_ops->xp_stat)(xprt) 614 615 #define SVC_GETARGS(xprt, xargs, argsp) \ 616 (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp)) 617 #define svc_getargs(xprt, xargs, argsp) \ 618 (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp)) 619 620 #define SVC_REPLY(xprt, msg) \ 621 (*(xprt)->xp_ops->xp_reply) ((xprt), (msg)) 622 #define svc_reply(xprt, msg) \ 623 (*(xprt)->xp_ops->xp_reply) ((xprt), (msg)) 624 625 #define SVC_FREEARGS(xprt, xargs, argsp) \ 626 (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp)) 627 #define svc_freeargs(xprt, xargs, argsp) \ 628 (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp)) 629 630 #define SVC_GETRES(xprt, size) \ 631 (*(xprt)->xp_ops->xp_getres)((xprt), (size)) 632 #define svc_getres(xprt, size) \ 633 (*(xprt)->xp_ops->xp_getres)((xprt), (size)) 634 635 #define SVC_FREERES(xprt) \ 636 (*(xprt)->xp_ops->xp_freeres)(xprt) 637 #define svc_freeres(xprt) \ 638 (*(xprt)->xp_ops->xp_freeres)(xprt) 639 640 #define SVC_DESTROY(xprt) \ 641 (*(xprt)->xp_ops->xp_destroy)(xprt) 642 #define svc_destroy(xprt) \ 643 (*(xprt)->xp_ops->xp_destroy)(xprt) 644 645 /* 646 * PSARC 2003/523 Contract Private Interface 647 * SVC_CONTROL 648 * Changes must be reviewed by Solaris File Sharing 649 * Changes must be communicated to contract-2003-523@sun.com 650 */ 651 #define SVC_CONTROL(xprt, rq, in) \ 652 (*(xprt)->xp_ops->xp_control)((xprt), (rq), (in)) 653 #endif /* _KERNEL */ 654 655 /* 656 * Pool id's reserved for NFS, NLM, and the NFSv4 callback program. 657 */ 658 #define NFS_SVCPOOL_ID 0x01 659 #define NLM_SVCPOOL_ID 0x02 660 #define NFS_CB_SVCPOOL_ID 0x03 661 #define RDC_SVCPOOL_ID 0x05 /* SNDR, PSARC 2001/699 */ 662 663 struct svcpool_args { 664 uint32_t id; /* Pool id */ 665 uint32_t maxthreads; /* Max threads in the pool */ 666 uint32_t redline; /* `Redline' for the pool */ 667 uint32_t qsize; /* `xprt-ready' queue size */ 668 uint32_t timeout; /* svc_poll() timeout */ 669 uint32_t stksize; /* svc_run() stack size */ 670 uint32_t max_same_xprt; /* Max reqs from the same xprt */ 671 }; 672 673 674 #ifdef _KERNEL 675 /* 676 * Transport registration and thread pool creation. 677 */ 678 extern int svc_xprt_register(SVCMASTERXPRT *, int); 679 extern void svc_xprt_unregister(SVCMASTERXPRT *); 680 extern int svc_pool_create(struct svcpool_args *); 681 extern int svc_wait(int); 682 extern int svc_do_run(int); 683 #define SVCPSET_SHUTDOWN_PROC 1 684 #define SVCPSET_UNREGISTER_PROC 2 685 extern int svc_pool_control(int, int, void *); 686 #else /* _KERNEL */ 687 #ifdef __STDC__ 688 extern bool_t rpc_reg(const rpcprog_t, const rpcvers_t, const rpcproc_t, 689 char *(*)(char *), const xdrproc_t, const xdrproc_t, 690 const char *); 691 692 /* 693 * Service registration 694 * 695 * svc_reg(xprt, prog, vers, dispatch, nconf) 696 * const SVCXPRT *xprt; 697 * const rpcprog_t prog; 698 * const rpcvers_t vers; 699 * const void (*dispatch)(); 700 * const struct netconfig *nconf; 701 */ 702 extern bool_t svc_reg(const SVCXPRT *, const rpcprog_t, const rpcvers_t, 703 void (*)(struct svc_req *, SVCXPRT *), 704 const struct netconfig *); 705 706 /* 707 * Service authentication registration 708 * 709 * svc_auth_reg(cred_flavor, handler) 710 * int cred_flavor; 711 * enum auth_stat (*handler)(); 712 */ 713 extern int svc_auth_reg(int, enum auth_stat (*)()); 714 715 /* 716 * Service un-registration 717 * 718 * svc_unreg(prog, vers) 719 * const rpcprog_t prog; 720 * const rpcvers_t vers; 721 */ 722 extern void svc_unreg(const rpcprog_t, const rpcvers_t); 723 724 /* 725 * Transport registration/unregistration. 726 * 727 * xprt_register(xprt) 728 * const SVCXPRT *xprt; 729 * 730 * xprt_unregister(xprt) 731 * const SVCXPRT *xprt; 732 */ 733 extern void xprt_register(const SVCXPRT *); 734 extern void xprt_unregister(const SVCXPRT *); 735 #else /* __STDC__ */ 736 extern bool_t rpc_reg(); 737 extern bool_t svc_reg(); 738 extern bool_t svc_auth_reg(); 739 extern void svc_unreg(); 740 extern void xprt_register(); 741 extern void xprt_unregister(); 742 #endif /* __STDC__ */ 743 #endif /* _KERNEL */ 744 745 #ifdef _KERNEL 746 /* 747 * Transport hold and release. 748 */ 749 extern void rpcmod_hold(queue_t *); 750 extern void rpcmod_release(queue_t *, mblk_t *, bool_t); 751 extern void mir_svc_hold(queue_t *); 752 extern void mir_svc_release(queue_t *, mblk_t *, bool_t); 753 #endif /* _KERNEL */ 754 755 /* 756 * When the service routine is called, it must first check to see if it 757 * knows about the procedure; if not, it should call svcerr_noproc 758 * and return. If so, it should deserialize its arguments via 759 * SVC_GETARGS (defined above). If the deserialization does not work, 760 * svcerr_decode should be called followed by a return. Successful 761 * decoding of the arguments should be followed the execution of the 762 * procedure's code and a call to svc_sendreply. 763 * 764 * Also, if the service refuses to execute the procedure due to too- 765 * weak authentication parameters, svcerr_weakauth should be called. 766 * Note: do not confuse access-control failure with weak authentication! 767 * 768 * NB: In pure implementations of rpc, the caller always waits for a reply 769 * msg. This message is sent when svc_sendreply is called. 770 * Therefore pure service implementations should always call 771 * svc_sendreply even if the function logically returns void; use 772 * xdr.h - xdr_void for the xdr routine. HOWEVER, connectionful rpc allows 773 * for the abuse of pure rpc via batched calling or pipelining. In the 774 * case of a batched call, svc_sendreply should NOT be called since 775 * this would send a return message, which is what batching tries to avoid. 776 * It is the service/protocol writer's responsibility to know which calls are 777 * batched and which are not. Warning: responding to batch calls may 778 * deadlock the caller and server processes! 779 */ 780 #ifdef __STDC__ 781 extern bool_t svc_sendreply(const SVCXPRT *, const xdrproc_t, const caddr_t); 782 extern void svcerr_decode(const SVCXPRT *); 783 extern void svcerr_weakauth(const SVCXPRT *); 784 extern void svcerr_noproc(const SVCXPRT *); 785 extern void svcerr_progvers(const SVCXPRT *, const rpcvers_t, 786 const rpcvers_t); 787 extern void svcerr_auth(const SVCXPRT *, const enum auth_stat); 788 extern void svcerr_noprog(const SVCXPRT *); 789 extern void svcerr_systemerr(const SVCXPRT *); 790 extern void svcerr_badcred(const SVCXPRT *); 791 #else /* __STDC__ */ 792 extern bool_t svc_sendreply(); 793 extern void svcerr_decode(); 794 extern void svcerr_weakauth(); 795 extern void svcerr_noproc(); 796 extern void svcerr_progvers(); 797 extern void svcerr_auth(); 798 extern void svcerr_noprog(); 799 extern void svcerr_systemerr(); 800 extern void svcerr_badcred(); 801 #endif /* __STDC__ */ 802 803 #ifdef _KERNEL 804 /* 805 * Kernel RPC functions. 806 */ 807 extern void svc_init(void); 808 extern void svc_cots_init(void); 809 extern void svc_clts_init(void); 810 extern void mt_kstat_init(void); 811 extern void mt_kstat_fini(void); 812 extern int svc_tli_kcreate(struct file *, uint_t, char *, 813 struct netbuf *, SVCMASTERXPRT **, 814 SVC_CALLOUT_TABLE *, 815 void (*closeproc)(const SVCMASTERXPRT *), 816 int, bool_t); 817 extern int svc_clts_kcreate(struct file *, uint_t, struct T_info_ack *, 818 SVCMASTERXPRT **); 819 extern int svc_cots_kcreate(struct file *, uint_t, struct T_info_ack *, 820 SVCMASTERXPRT **); 821 extern bool_t svc_queuereq(queue_t *, mblk_t *, bool_t); 822 extern void svc_queueclean(queue_t *); 823 extern void svc_queueclose(queue_t *); 824 extern int svc_reserve_thread(SVCXPRT *); 825 extern void svc_unreserve_thread(SVCXPRT *); 826 extern callb_cpr_t *svc_detach_thread(SVCXPRT *); 827 828 /* 829 * For RDMA based kRPC. 830 * "rdma_xprt_record" is a reference to master transport handles 831 * in kRPC thread pools. This is an easy way of tracking and shuting 832 * down rdma based kRPC transports on demand. 833 * "rdma_xprt_group" is a list of RDMA based mster transport handles 834 * or records in a kRPC thread pool. 835 */ 836 typedef struct rdma_xprt_record rdma_xprt_record_t; 837 struct rdma_xprt_record { 838 int rtr_type; /* Type of rdma; IB/VI/RDDP */ 839 SVCMASTERXPRT *rtr_xprt_ptr; /* Ptr to master xprt handle */ 840 rdma_xprt_record_t *rtr_next; /* Ptr to next record */ 841 }; 842 843 typedef struct { 844 int rtg_count; /* Number transport records */ 845 int rtg_poolid; /* Pool Id for this group */ 846 rdma_xprt_record_t *rtg_listhead; /* Head of the records list */ 847 } rdma_xprt_group_t; 848 849 extern int svc_rdma_kcreate(char *, SVC_CALLOUT_TABLE *, int, 850 rdma_xprt_group_t *); 851 extern void svc_rdma_kstop(SVCMASTERXPRT *); 852 extern void svc_rdma_kdestroy(SVCMASTERXPRT *); 853 extern void rdma_stop(rdma_xprt_group_t *); 854 855 /* 856 * GSS cleanup method. 857 */ 858 extern void rpc_gss_cleanup(SVCXPRT *); 859 #else /* _KERNEL */ 860 /* 861 * Lowest level dispatching -OR- who owns this process anyway. 862 * Somebody has to wait for incoming requests and then call the correct 863 * service routine. The routine svc_run does infinite waiting; i.e., 864 * svc_run never returns. 865 * Since another (co-existant) package may wish to selectively wait for 866 * incoming calls or other events outside of the rpc architecture, the 867 * routine svc_getreq_poll is provided. It must be passed pollfds, the 868 * "in-place" results of a poll call (see poll, section 2). 869 */ 870 871 /* 872 * Global keeper of rpc service descriptors in use 873 * dynamic; must be inspected before each call to select or poll 874 */ 875 extern pollfd_t *svc_pollfd; 876 extern int svc_max_pollfd; 877 extern fd_set svc_fdset; 878 #define svc_fds svc_fdset.fds_bits[0] /* compatibility */ 879 880 /* 881 * A small program implemented by the svc_rpc implementation itself. 882 * Also see clnt.h for protocol numbers. 883 */ 884 #ifdef __STDC__ 885 extern void svc_getreq(int); 886 extern void svc_getreq_common(const int); 887 extern void svc_getreqset(fd_set *); /* takes fdset instead of int */ 888 extern void svc_getreq_poll(struct pollfd *, const int); 889 extern void svc_run(void); 890 extern void svc_exit(void); 891 #else /* __STDC__ */ 892 extern void rpctest_service(); 893 extern void svc_getreqset(); 894 extern void svc_getreq(); 895 extern void svc_getreq_common(); 896 extern void svc_getreqset(); /* takes fdset instead of int */ 897 extern void svc_getreq_poll(); 898 extern void svc_run(); 899 extern void svc_exit(); 900 #endif /* __STDC__ */ 901 902 /* 903 * Functions used to manage user file descriptors 904 */ 905 typedef int svc_input_id_t; 906 typedef void (*svc_callback_t)(svc_input_id_t id, int fd, 907 unsigned int events, void* cookie); 908 909 #ifdef __STDC__ 910 extern svc_input_id_t svc_add_input(int fd, unsigned int events, 911 svc_callback_t user_callback, 912 void* cookie); 913 extern int svc_remove_input(svc_input_id_t id); 914 #else /* __STDC__ */ 915 extern svc_input_id_t svc_add_input(); 916 extern int svc_remove_input(); 917 #endif 918 919 /* 920 * These are the existing service side transport implementations. 921 * 922 * Transport independent svc_create routine. 923 */ 924 #ifdef __STDC__ 925 extern int svc_create(void (*)(struct svc_req *, SVCXPRT *), 926 const rpcprog_t, const rpcvers_t, 927 const char *); 928 /* 929 * void (*dispatch)(); -- dispatch routine 930 * const rpcprog_t prognum; -- program number 931 * const rpcvers_t versnum; -- version number 932 * const char *nettype; -- network type 933 */ 934 935 /* 936 * Generic server creation routine. It takes a netconfig structure 937 * instead of a nettype. 938 */ 939 extern SVCXPRT *svc_tp_create(void (*)(struct svc_req *, SVCXPRT *), 940 const rpcprog_t, const rpcvers_t, 941 const struct netconfig *); 942 /* 943 * void (*dispatch)(); -- dispatch routine 944 * const rpcprog_t prognum; -- program number 945 * const rpcvers_t versnum; -- version number 946 * const struct netconfig *nconf; -- netconfig structure 947 */ 948 949 /* 950 * Variant of svc_tp_create that accepts a binding address. 951 * If addr == NULL, this is the same as svc_tp_create(). 952 */ 953 extern SVCXPRT *svc_tp_create_addr(void (*)(struct svc_req *, SVCXPRT *), 954 const rpcprog_t, const rpcvers_t, 955 const struct netconfig *, 956 const struct netbuf *); 957 /* 958 * void (*dispatch)(); -- dispatch routine 959 * const rpcprog_t prognum; -- program number 960 * const rpcvers_t versnum; -- version number 961 * const struct netconfig *nconf; -- netconfig structure 962 * const struct netbuf *addr; -- address to bind 963 */ 964 965 /* 966 * Generic TLI create routine 967 */ 968 extern SVCXPRT *svc_tli_create(const int, const struct netconfig *, 969 const struct t_bind *, const uint_t, 970 const uint_t); 971 /* 972 * const int fd; -- connection end point 973 * const struct netconfig *nconf; -- netconfig structure 974 * const struct t_bind *bindaddr; -- local bind address 975 * const uint_t sendsz; -- max sendsize 976 * const uint_t recvsz; -- max recvsize 977 */ 978 979 /* 980 * Connectionless and connectionful create routines. 981 */ 982 extern SVCXPRT *svc_vc_create(const int, const uint_t, const uint_t); 983 /* 984 * const int fd; -- open connection end point 985 * const uint_t sendsize; -- max send size 986 * const uint_t recvsize; -- max recv size 987 */ 988 989 extern SVCXPRT *svc_dg_create(const int, const uint_t, const uint_t); 990 /* 991 * const int fd; -- open connection 992 * const uint_t sendsize; -- max send size 993 * const uint_t recvsize; -- max recv size 994 */ 995 996 /* 997 * the routine takes any *open* TLI file 998 * descriptor as its first input and is used for open connections. 999 */ 1000 extern SVCXPRT *svc_fd_create(const int, const uint_t, const uint_t); 1001 /* 1002 * const int fd; -- open connection end point 1003 * const uint_t sendsize; -- max send size 1004 * const uint_t recvsize; -- max recv size 1005 */ 1006 1007 /* 1008 * Memory based rpc (for speed check and testing) 1009 */ 1010 extern SVCXPRT *svc_raw_create(void); 1011 1012 /* 1013 * Creation of service over doors transport. 1014 */ 1015 extern SVCXPRT *svc_door_create(void (*)(struct svc_req *, SVCXPRT *), 1016 const rpcprog_t, const rpcvers_t, 1017 const uint_t); 1018 /* 1019 * void (*dispatch)(); -- dispatch routine 1020 * const rpcprog_t prognum; -- program number 1021 * const rpcvers_t versnum; -- version number 1022 * const uint_t sendsize; -- send buffer size 1023 */ 1024 1025 /* 1026 * Service control interface 1027 */ 1028 extern bool_t svc_control(SVCXPRT *, const uint_t, void *); 1029 /* 1030 * SVCXPRT *svc; -- service to manipulate 1031 * const uint_t req; -- request 1032 * void *info; -- argument to request 1033 */ 1034 1035 /* 1036 * svc_dg_enable_cache() enables the cache on dg transports. 1037 */ 1038 extern int svc_dg_enablecache(SVCXPRT *, const uint_t); 1039 #else /* __STDC__ */ 1040 extern int svc_create(); 1041 extern SVCXPRT *svc_tp_create(); 1042 extern SVCXPRT *svc_tli_create(); 1043 extern SVCXPRT *svc_vc_create(); 1044 extern SVCXPRT *svc_dg_create(); 1045 extern SVCXPRT *svc_fd_create(); 1046 extern SVCXPRT *svc_raw_create(); 1047 extern SVCXPRT *svc_door_create(); 1048 extern int svc_dg_enablecache(); 1049 #endif /* __STDC__ */ 1050 1051 extern boolean_t is_multilevel(rpcprog_t); 1052 1053 #ifdef PORTMAP 1054 /* For backward compatibility */ 1055 #include <rpc/svc_soc.h> 1056 #endif /* PORTMAP */ 1057 1058 /* 1059 * For user level MT hot server functions 1060 */ 1061 1062 /* 1063 * Different MT modes 1064 */ 1065 #define RPC_SVC_MT_NONE 0 /* default, single-threaded */ 1066 #define RPC_SVC_MT_AUTO 1 /* automatic MT mode */ 1067 #define RPC_SVC_MT_USER 2 /* user MT mode */ 1068 1069 #ifdef __STDC__ 1070 extern void svc_done(SVCXPRT *); 1071 #else 1072 extern void svc_done(); 1073 #endif /* __STDC__ */ 1074 1075 /* 1076 * Obtaining local credentials. 1077 */ 1078 typedef struct __svc_local_cred_t { 1079 uid_t euid; /* effective uid */ 1080 gid_t egid; /* effective gid */ 1081 uid_t ruid; /* real uid */ 1082 gid_t rgid; /* real gid */ 1083 pid_t pid; /* caller's pid, or -1 if not available */ 1084 } svc_local_cred_t; 1085 1086 #ifdef __STDC__ 1087 struct ucred_s; 1088 extern void svc_fd_negotiate_ucred(int); 1089 extern int svc_getcallerucred(const SVCXPRT *, struct ucred_s **); 1090 extern bool_t svc_get_local_cred(SVCXPRT *, svc_local_cred_t *); 1091 #else 1092 extern void svc_fd_negotiate_ucred(); 1093 extern int svc_getcallerucred(); 1094 extern bool_t svc_get_local_cred(); 1095 #endif /* __STDC__ */ 1096 1097 /* 1098 * Private interfaces and structures for user level duplicate request caching. 1099 * The interfaces and data structures are not committed and subject to 1100 * change in future releases. Currently only intended for use by automountd. 1101 */ 1102 struct dupreq { 1103 uint32_t dr_xid; 1104 rpcproc_t dr_proc; 1105 rpcvers_t dr_vers; 1106 rpcprog_t dr_prog; 1107 struct netbuf dr_addr; 1108 struct netbuf dr_resp; 1109 int dr_status; 1110 time_t dr_time; 1111 uint_t dr_hash; 1112 struct dupreq *dr_next; 1113 struct dupreq *dr_prev; 1114 struct dupreq *dr_chain; 1115 struct dupreq *dr_prevchain; 1116 }; 1117 1118 /* 1119 * The fixedtime state is defined if we want to expand the routines to 1120 * handle and encompass fixed size caches. 1121 */ 1122 #define DUPCACHE_FIXEDTIME 0 1123 1124 /* 1125 * States of requests for duplicate request caching. 1126 * These are the same as defined for the kernel. 1127 */ 1128 #define DUP_NEW 0x00 /* new entry */ 1129 #define DUP_INPROGRESS 0x01 /* request already going */ 1130 #define DUP_DONE 0x02 /* request done */ 1131 #define DUP_DROP 0x03 /* request dropped */ 1132 #define DUP_ERROR 0x04 /* error in dup req cache */ 1133 1134 #ifdef __STDC__ 1135 extern bool_t __svc_dupcache_init(void *, int, char **); 1136 extern int __svc_dup(struct svc_req *, caddr_t *, uint_t *, char *); 1137 extern int __svc_dupdone(struct svc_req *, caddr_t, uint_t, int, char *); 1138 extern bool_t __svc_vc_dupcache_init(SVCXPRT *, void *, int); 1139 extern int __svc_vc_dup(struct svc_req *, caddr_t *, uint_t *); 1140 extern int __svc_vc_dupdone(struct svc_req *, caddr_t, uint_t, int); 1141 #else 1142 extern bool_t __svc_dupcache_init(); 1143 extern int __svc_dup(); 1144 extern int __svc_dupdone(); 1145 extern bool_t __svc_vc_dupcache_init(); 1146 extern int __svc_vc_dup(); 1147 extern int __svc_vc_dupdone(); 1148 #endif /* __STDC__ */ 1149 #endif /* _KERNEL */ 1150 1151 #ifdef _KERNEL 1152 /* 1153 * Private interfaces and structures for SVCXPRT cloning. 1154 * The interfaces and data structures are not committed and subject to 1155 * change in future releases. 1156 */ 1157 extern SVCXPRT *svc_clone_init(void); 1158 extern void svc_clone_free(SVCXPRT *); 1159 extern void svc_clone_link(SVCMASTERXPRT *, SVCXPRT *, SVCXPRT *); 1160 extern void svc_clone_unlink(SVCXPRT *); 1161 1162 /* Get cached preallocated cred */ 1163 extern cred_t *svc_xprt_cred(SVCXPRT *); 1164 #endif /* _KERNEL */ 1165 1166 #ifdef __cplusplus 1167 } 1168 #endif 1169 1170 #endif /* !_RPC_SVC_H */ 1171