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 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 26 /* All Rights Reserved */ 27 /* 28 * Portions of this source code were derived from Berkeley 29 * 4.3 BSD under license from the Regents of the University of 30 * California. 31 */ 32 33 /* 34 * svc.h, Server-side remote procedure call interface. 35 */ 36 37 #ifndef _RPC_SVC_H 38 #define _RPC_SVC_H 39 40 #include <rpc/rpc_com.h> 41 #include <rpc/rpc_msg.h> 42 #include <sys/tihdr.h> 43 #include <sys/poll.h> 44 #include <sys/tsol/label.h> 45 46 #ifdef _KERNEL 47 #include <rpc/svc_auth.h> 48 #include <sys/callb.h> 49 #endif /* _KERNEL */ 50 51 /* 52 * This interface must manage two items concerning remote procedure calling: 53 * 54 * 1) An arbitrary number of transport connections upon which rpc requests 55 * are received. They are created and registered by routines in svc_generic.c, 56 * svc_vc.c and svc_dg.c; they in turn call xprt_register and 57 * xprt_unregister. 58 * 59 * 2) An arbitrary number of locally registered services. Services are 60 * described by the following four data: program number, version number, 61 * "service dispatch" function, a transport handle, and a boolean that 62 * indicates whether or not the exported program should be registered with a 63 * local binder service; if true the program's number and version and the 64 * address from the transport handle are registered with the binder. 65 * These data are registered with rpcbind via svc_reg(). 66 * 67 * A service's dispatch function is called whenever an rpc request comes in 68 * on a transport. The request's program and version numbers must match 69 * those of the registered service. The dispatch function is passed two 70 * parameters, struct svc_req * and SVCXPRT *, defined below. 71 */ 72 73 #ifdef __cplusplus 74 extern "C" { 75 #endif 76 77 /* 78 * Server-side transport handles. 79 * The actual type definitions are below. 80 */ 81 #ifdef _KERNEL 82 typedef struct __svcmasterxprt SVCMASTERXPRT; /* Master transport handle */ 83 typedef struct __svcxprt SVCXPRT; /* Per-thread clone handle */ 84 typedef struct __svcpool SVCPOOL; /* Kernel thread pool */ 85 #else /* _KERNEL */ 86 typedef struct __svcxprt SVCXPRT; /* Server transport handle */ 87 #endif /* _KERNEL */ 88 89 /* 90 * Prototype of error handler callback 91 */ 92 #ifndef _KERNEL 93 typedef void (*svc_errorhandler_t)(const SVCXPRT* svc, const bool_t isAConn); 94 #endif 95 96 /* 97 * Service request. 98 * 99 * PSARC 2003/523 Contract Private Interface 100 * svc_req 101 * Changes must be reviewed by Solaris File Sharing 102 * Changes must be communicated to contract-2003-523@sun.com 103 */ 104 struct svc_req { 105 rpcprog_t rq_prog; /* service program number */ 106 rpcvers_t rq_vers; /* service protocol version */ 107 rpcproc_t rq_proc; /* the desired procedure */ 108 struct opaque_auth rq_cred; /* raw creds from the wire */ 109 caddr_t rq_clntcred; /* read only cooked cred */ 110 SVCXPRT *rq_xprt; /* associated transport */ 111 bslabel_t *rq_label; /* TSOL label of the request */ 112 }; 113 114 #ifdef _KERNEL 115 struct dupreq { 116 uint32_t dr_xid; 117 rpcproc_t dr_proc; 118 rpcvers_t dr_vers; 119 rpcprog_t dr_prog; 120 struct netbuf dr_addr; 121 struct netbuf dr_resp; 122 void (*dr_resfree)(); 123 int dr_status; 124 struct dupreq *dr_next; 125 struct dupreq *dr_chain; 126 }; 127 128 /* 129 * States of requests for duplicate request caching. 130 */ 131 #define DUP_NEW 0x00 /* new entry */ 132 #define DUP_INPROGRESS 0x01 /* request already going */ 133 #define DUP_DONE 0x02 /* request done */ 134 #define DUP_DROP 0x03 /* request dropped */ 135 #define DUP_ERROR 0x04 /* error in dup req cache */ 136 137 /* 138 * Prototype for a service dispatch routine. 139 */ 140 typedef void (SVC_DISPATCH)(struct svc_req *, SVCXPRT *); 141 142 /* 143 * The service provider callout. 144 * Each entry identifies a dispatch routine to be called 145 * for a given RPC program number and a version fitting 146 * into the registered range. 147 */ 148 typedef struct { 149 rpcprog_t sc_prog; /* RPC Program number */ 150 rpcvers_t sc_versmin; /* Min version number */ 151 rpcvers_t sc_versmax; /* Max version number */ 152 SVC_DISPATCH *sc_dispatch; /* Dispatch routine */ 153 } SVC_CALLOUT; 154 155 /* 156 * Table of service provider `callouts' for an RPC 157 * transport handle. If sct_free is TRUE then transport 158 * destructor is supposed to deallocate this table. 159 */ 160 typedef struct { 161 size_t sct_size; /* Number of entries */ 162 bool_t sct_free; /* Deallocate if true */ 163 SVC_CALLOUT *sct_sc; /* Callout entries */ 164 } SVC_CALLOUT_TABLE; 165 166 struct svc_ops { 167 bool_t (*xp_recv)(SVCXPRT *, mblk_t *, struct rpc_msg *); 168 /* receive incoming requests */ 169 bool_t (*xp_getargs)(SVCXPRT *, xdrproc_t, caddr_t); 170 /* get arguments */ 171 bool_t (*xp_reply)(SVCXPRT *, struct rpc_msg *); 172 /* send reply */ 173 bool_t (*xp_freeargs)(SVCXPRT *, xdrproc_t, caddr_t); 174 /* free mem allocated for args */ 175 void (*xp_destroy)(SVCMASTERXPRT *); 176 /* destroy this struct */ 177 int (*xp_dup)(struct svc_req *, caddr_t, int, 178 struct dupreq **, bool_t *); 179 /* check for dup */ 180 void (*xp_dupdone)(struct dupreq *, caddr_t, void (*)(), int, int); 181 /* mark dup entry as completed */ 182 int32_t *(*xp_getres)(SVCXPRT *, int); 183 /* get pointer to response buffer */ 184 void (*xp_freeres)(SVCXPRT *); 185 /* destroy pre-serialized response */ 186 void (*xp_clone_destroy)(SVCXPRT *); 187 /* destroy a clone xprt */ 188 void (*xp_start)(SVCMASTERXPRT *); 189 /* `ready-to-receive' */ 190 }; 191 #else /* _KERNEL */ 192 /* 193 * Service control requests 194 */ 195 #define SVCGET_VERSQUIET 1 196 #define SVCSET_VERSQUIET 2 197 #define SVCGET_XID 4 198 #define SVCSET_KEEPALIVE 5 199 #define SVCSET_CONNMAXREC 6 200 #define SVCGET_CONNMAXREC 7 201 #define SVCGET_RECVERRHANDLER 8 202 #define SVCSET_RECVERRHANDLER 9 203 204 enum xprt_stat { 205 XPRT_DIED, 206 XPRT_MOREREQS, 207 XPRT_IDLE 208 }; 209 210 struct xp_ops { 211 #ifdef __STDC__ 212 bool_t (*xp_recv)(SVCXPRT *, struct rpc_msg *); 213 /* receive incoming requests */ 214 enum xprt_stat (*xp_stat)(SVCXPRT *); 215 /* get transport status */ 216 bool_t (*xp_getargs)(SVCXPRT *, xdrproc_t, caddr_t); 217 /* get arguments */ 218 bool_t (*xp_reply)(SVCXPRT *, struct rpc_msg *); 219 /* send reply */ 220 bool_t (*xp_freeargs)(SVCXPRT *, xdrproc_t, caddr_t); 221 /* free mem allocated for args */ 222 void (*xp_destroy)(SVCXPRT *); 223 /* destroy this struct */ 224 bool_t (*xp_control)(SVCXPRT *, const uint_t, void *); 225 /* catch-all control function */ 226 #else /* __STDC__ */ 227 bool_t (*xp_recv)(); /* receive incoming requests */ 228 enum xprt_stat (*xp_stat)(); /* get transport status */ 229 bool_t (*xp_getargs)(); /* get arguments */ 230 bool_t (*xp_reply)(); /* send reply */ 231 bool_t (*xp_freeargs)(); /* free mem allocated for args */ 232 void (*xp_destroy)(); /* destroy this struct */ 233 bool_t (*xp_control)(); /* catch-all control function */ 234 #endif /* __STDC__ */ 235 }; 236 #endif /* _KERNEL */ 237 238 #ifdef _KERNEL 239 /* 240 * SVCPOOL 241 * Kernel RPC server-side thread pool structure. 242 */ 243 typedef struct __svcxprt_qnode __SVCXPRT_QNODE; /* Defined in svc.c */ 244 245 struct __svcpool { 246 /* 247 * Thread pool variables. 248 * 249 * The pool's thread lock p_thread_lock protects: 250 * - p_threads, p_detached_threads, p_reserved_threads and p_closing 251 * The pool's request lock protects: 252 * - p_asleep, p_drowsy, p_reqs, p_walkers, p_req_cv. 253 * The following fields are `initialized constants': 254 * - p_id, p_stksize, p_timeout. 255 * Access to p_next and p_prev is protected by the pool 256 * list lock. 257 */ 258 SVCPOOL *p_next; /* Next pool in the list */ 259 SVCPOOL *p_prev; /* Prev pool in the list */ 260 int p_id; /* Pool id */ 261 int p_threads; /* Non-detached threads */ 262 int p_detached_threads; /* Detached threads */ 263 int p_maxthreads; /* Max threads in the pool */ 264 int p_redline; /* `Redline' for the pool */ 265 int p_reserved_threads; /* Reserved threads */ 266 kmutex_t p_thread_lock; /* Thread lock */ 267 int p_asleep; /* Asleep threads */ 268 int p_drowsy; /* Drowsy flag */ 269 kcondvar_t p_req_cv; /* svc_poll() sleep var. */ 270 clock_t p_timeout; /* svc_poll() timeout */ 271 kmutex_t p_req_lock; /* Request lock */ 272 int p_reqs; /* Pending requests */ 273 int p_walkers; /* Walking threads */ 274 int p_max_same_xprt; /* Max reqs from the xprt */ 275 int p_stksize; /* Stack size for svc_run */ 276 bool_t p_closing : 1; /* Pool is closing */ 277 278 /* 279 * Thread creator variables. 280 * The `creator signaled' flag is turned on when a signal is send 281 * to the creator thread (to create a new service thread). The 282 * creator clears when the thread is created. The protocol is not 283 * to signal the creator thread when the flag is on. However, 284 * a new thread should signal the creator if there are more 285 * requests in the queue. 286 * 287 * When the pool is closing (ie it has been already unregistered from 288 * the pool list) the last thread on the last transport should turn 289 * the p_creator_exit flag on. This tells the creator thread to 290 * free the pool structure and exit. 291 */ 292 bool_t p_creator_signaled : 1; /* Create requested flag */ 293 bool_t p_creator_exit : 1; /* If true creator exits */ 294 kcondvar_t p_creator_cv; /* Creator cond. variable */ 295 kmutex_t p_creator_lock; /* Creator lock */ 296 297 /* 298 * Doubly linked list containing `registered' master transport handles. 299 * There is no special structure for a list node. Instead the 300 * SVCMASTERXPRT structure has the xp_next and xp_prev fields. 301 * 302 * The p_lrwlock protects access to xprt->xp_next and xprt->xp_prev. 303 * A service thread should also acquire a reader lock before accessing 304 * any transports it is no longer linked to (to prevent them from 305 * being destroyed). 306 * 307 * The list lock governs also the `pool is closing' flag. 308 */ 309 size_t p_lcount; /* Current count */ 310 SVCMASTERXPRT *p_lhead; /* List head */ 311 krwlock_t p_lrwlock; /* R/W lock */ 312 313 /* 314 * Circular linked list for the `xprt-ready' queue (FIFO). 315 * Must be initialized with svc_xprt_qinit() before it is used. 316 * 317 * The writer's end is protected by the pool's request lock 318 * (pool->p_req_lock). The reader's end is protected by q_end_lock. 319 * 320 * When the queue is full the p_qoverflow flag is raised. It stays 321 * on until all the pending request are drained. 322 */ 323 size_t p_qsize; /* Number of queue nodes */ 324 int p_qoverflow : 1; /* Overflow flag */ 325 __SVCXPRT_QNODE *p_qbody; /* Queue body (array) */ 326 __SVCXPRT_QNODE *p_qtop; /* Writer's end of FIFO */ 327 __SVCXPRT_QNODE *p_qend; /* Reader's end of FIFO */ 328 kmutex_t p_qend_lock; /* Reader's end lock */ 329 330 /* 331 * Userspace thread creator variables. 332 * Thread creation is actually done in userland, via a thread 333 * that is parked in the kernel. When that thread is signaled, 334 * it returns back down to the daemon from whence it came and 335 * does the lwp create. 336 * 337 * A parallel "creator" thread runs in the kernel. That is the 338 * thread that will signal for the user thread to return to 339 * userland and do its work. 340 * 341 * Since the thread doesn't always exist (there could be a race 342 * if two threads are created in rapid succession), we set 343 * p_signal_create_thread to FALSE when we're ready to accept work. 344 * 345 * p_user_exit is set to true when the service pool is about 346 * to close. This is done so that the user creation thread 347 * can be informed and cleanup any userland state. 348 */ 349 350 bool_t p_signal_create_thread : 1; /* Create requested flag */ 351 bool_t p_user_exit : 1; /* If true creator exits */ 352 bool_t p_user_waiting : 1; /* Thread waiting for work */ 353 kcondvar_t p_user_cv; /* Creator cond. variable */ 354 kmutex_t p_user_lock; /* Creator lock */ 355 void (*p_offline)(); /* callout for unregister */ 356 void (*p_shutdown)(); /* callout for shutdown */ 357 }; 358 359 /* 360 * Server side transport handle (SVCMASTERXPRT). 361 * xprt->xp_req_lock governs the following fields in xprt: 362 * xp_req_head, xp_req_tail. 363 * xprt->xp_thread_lock governs the following fields in xprt: 364 * xp_threads, xp_detached_threads. 365 * 366 * xp_req_tail is only valid if xp_req_head is non-NULL 367 * 368 * The xp_threads count is the number of attached threads. These threads 369 * are able to handle new requests, and it is expected that they will not 370 * block for a very long time handling a given request. The 371 * xp_detached_threads count is the number of threads that have detached 372 * themselves from the transport. These threads can block indefinitely 373 * while handling a request. Once they complete the request, they exit. 374 * 375 * A kernel service provider may register a callback function "closeproc" 376 * for a transport. When the transport is closing the last exiting attached 377 * thread - xp_threads goes to zero - it calls the callback function, passing 378 * it a reference to the transport. This call is made with xp_thread_lock 379 * held, so any cleanup bookkeeping it does should be done quickly. 380 * 381 * When the transport is closing the last exiting thread is supposed 382 * to destroy/free the data structure. 383 */ 384 typedef struct __svcxprt_common { 385 struct file *xpc_fp; 386 struct svc_ops *xpc_ops; 387 queue_t *xpc_wq; /* queue to write onto */ 388 cred_t *xpc_cred; /* cached cred for server to use */ 389 int32_t xpc_type; /* transport type */ 390 int xpc_msg_size; /* TSDU or TIDU size */ 391 struct netbuf xpc_rtaddr; /* remote transport address */ 392 struct netbuf xpc_lcladdr; /* local transport address */ 393 char *xpc_netid; /* network token */ 394 SVC_CALLOUT_TABLE *xpc_sct; 395 } __SVCXPRT_COMMON; 396 397 #define xp_fp xp_xpc.xpc_fp 398 #define xp_ops xp_xpc.xpc_ops 399 #define xp_wq xp_xpc.xpc_wq 400 #define xp_cred xp_xpc.xpc_cred 401 #define xp_type xp_xpc.xpc_type 402 #define xp_msg_size xp_xpc.xpc_msg_size 403 #define xp_rtaddr xp_xpc.xpc_rtaddr 404 #define xp_lcladdr xp_xpc.xpc_lcladdr 405 #define xp_sct xp_xpc.xpc_sct 406 #define xp_netid xp_xpc.xpc_netid 407 408 struct __svcmasterxprt { 409 SVCMASTERXPRT *xp_next; /* Next transport in the list */ 410 SVCMASTERXPRT *xp_prev; /* Prev transport in the list */ 411 __SVCXPRT_COMMON xp_xpc; /* Fields common with the clone */ 412 SVCPOOL *xp_pool; /* Pointer to the pool */ 413 mblk_t *xp_req_head; /* Request queue head */ 414 mblk_t *xp_req_tail; /* Request queue tail */ 415 kmutex_t xp_req_lock; /* Request lock */ 416 int xp_threads; /* Current num. of attached threads */ 417 int xp_detached_threads; /* num. of detached threads */ 418 kmutex_t xp_thread_lock; /* Thread count lock */ 419 void (*xp_closeproc)(const SVCMASTERXPRT *); 420 /* optional; see comments above */ 421 struct netbuf xp_addrmask; /* address mask */ 422 423 caddr_t xp_p2; /* private: for use by svc ops */ 424 }; 425 426 /* 427 * Service thread `clone' transport handle (SVCXPRT) 428 * 429 * PSARC 2003/523 Contract Private Interface 430 * SVCXPRT 431 * Changes must be reviewed by Solaris File Sharing 432 * Changes must be communicated to contract-2003-523@sun.com 433 * 434 * The xp_p2buf buffer is used as the storage for a transport type 435 * specific structure. It is private for the svc ops for a given 436 * transport type. 437 */ 438 439 #define SVC_P2LEN 128 440 441 struct __svcxprt { 442 __SVCXPRT_COMMON xp_xpc; 443 SVCMASTERXPRT *xp_master; /* back ptr to master */ 444 445 /* The following fileds are on a per-thread basis */ 446 callb_cpr_t *xp_cprp; /* unused padding for Contract */ 447 bool_t xp_reserved : 1; /* is thread reserved? */ 448 bool_t xp_detached : 1; /* is thread detached? */ 449 int xp_same_xprt; /* Reqs from the same xprt */ 450 451 /* The following fields are used on a per-request basis */ 452 struct opaque_auth xp_verf; /* raw response verifier */ 453 SVCAUTH xp_auth; /* auth flavor of current req */ 454 void *xp_cookie; /* a cookie */ 455 uint32_t xp_xid; /* id */ 456 XDR xp_xdrin; /* input xdr stream */ 457 XDR xp_xdrout; /* output xdr stream */ 458 459 /* Private for svc ops */ 460 char xp_p2buf[SVC_P2LEN]; /* udp_data or cots_data_t */ 461 /* or clone_rdma_data_t */ 462 }; 463 #else /* _KERNEL */ 464 struct __svcxprt { 465 int xp_fd; 466 #define xp_sock xp_fd 467 ushort_t xp_port; 468 /* 469 * associated port number. 470 * Obsolete, but still used to 471 * specify whether rendezvouser 472 * or normal connection 473 */ 474 struct xp_ops *xp_ops; 475 int xp_addrlen; /* length of remote addr. Obsoleted */ 476 char *xp_tp; /* transport provider device name */ 477 char *xp_netid; /* network token */ 478 struct netbuf xp_ltaddr; /* local transport address */ 479 struct netbuf xp_rtaddr; /* remote transport address */ 480 char xp_raddr[16]; /* remote address. Now obsoleted */ 481 struct opaque_auth xp_verf; /* raw response verifier */ 482 caddr_t xp_p1; /* private: for use by svc ops */ 483 caddr_t xp_p2; /* private: for use by svc ops */ 484 caddr_t xp_p3; /* private: for use by svc lib */ 485 int xp_type; /* transport type */ 486 /* 487 * callback on client death 488 * First parameter is the current structure, 489 * Second parameter : 490 * - FALSE for the service listener 491 * - TRUE for a real connected socket 492 */ 493 svc_errorhandler_t xp_closeclnt; 494 }; 495 #endif /* _KERNEL */ 496 497 /* 498 * Approved way of getting address of caller, 499 * address mask, and netid of transport. 500 */ 501 #define svc_getrpccaller(x) (&(x)->xp_rtaddr) 502 #ifdef _KERNEL 503 #define svc_getcaller(x) (&(x)->xp_rtaddr.buf) 504 #define svc_getaddrmask(x) (&(x)->xp_master->xp_addrmask) 505 #define svc_getnetid(x) ((x)->xp_netid) 506 #endif /* _KERNEL */ 507 508 /* 509 * Operations defined on an SVCXPRT handle 510 */ 511 512 #ifdef _KERNEL 513 #define SVC_RECV(clone_xprt, mp, msg) \ 514 (*(clone_xprt)->xp_ops->xp_recv)((clone_xprt), (mp), (msg)) 515 516 /* 517 * PSARC 2003/523 Contract Private Interface 518 * SVC_GETARGS 519 * Changes must be reviewed by Solaris File Sharing 520 * Changes must be communicated to contract-2003-523@sun.com 521 */ 522 #define SVC_GETARGS(clone_xprt, xargs, argsp) \ 523 (*(clone_xprt)->xp_ops->xp_getargs)((clone_xprt), (xargs), (argsp)) 524 525 #define SVC_REPLY(clone_xprt, msg) \ 526 (*(clone_xprt)->xp_ops->xp_reply) ((clone_xprt), (msg)) 527 528 #define SVC_FREEARGS(clone_xprt, xargs, argsp) \ 529 (*(clone_xprt)->xp_ops->xp_freeargs)((clone_xprt), (xargs), (argsp)) 530 531 #define SVC_GETRES(clone_xprt, size) \ 532 (*(clone_xprt)->xp_ops->xp_getres)((clone_xprt), (size)) 533 534 #define SVC_FREERES(clone_xprt) \ 535 (*(clone_xprt)->xp_ops->xp_freeres)(clone_xprt) 536 537 #define SVC_DESTROY(xprt) \ 538 (*(xprt)->xp_ops->xp_destroy)(xprt) 539 540 /* 541 * PSARC 2003/523 Contract Private Interfaces 542 * SVC_DUP, SVC_DUPDONE, SVC_DUP_EXT, SVC_DUPDONE_EXT 543 * Changes must be reviewed by Solaris File Sharing 544 * Changes must be communicated to contract-2003-523@sun.com 545 * 546 * SVC_DUP and SVC_DUPDONE are defined here for backward compatibility. 547 */ 548 #define SVC_DUP_EXT(clone_xprt, req, res, size, drpp, dupcachedp) \ 549 (*(clone_xprt)->xp_ops->xp_dup)(req, res, size, drpp, dupcachedp) 550 551 #define SVC_DUPDONE_EXT(clone_xprt, dr, res, resfree, size, status) \ 552 (*(clone_xprt)->xp_ops->xp_dupdone)(dr, res, resfree, size, status) 553 554 #define SVC_DUP(clone_xprt, req, res, size, drpp) \ 555 (*(clone_xprt)->xp_ops->xp_dup)(req, res, size, drpp, NULL) 556 557 #define SVC_DUPDONE(clone_xprt, dr, res, size, status) \ 558 (*(clone_xprt)->xp_ops->xp_dupdone)(dr, res, NULL, size, status) 559 560 #define SVC_CLONE_DESTROY(clone_xprt) \ 561 (*(clone_xprt)->xp_ops->xp_clone_destroy)(clone_xprt) 562 563 564 #define SVC_START(xprt) \ 565 (*(xprt)->xp_ops->xp_start)(xprt) 566 567 #else /* _KERNEL */ 568 569 #define SVC_RECV(xprt, msg) \ 570 (*(xprt)->xp_ops->xp_recv)((xprt), (msg)) 571 #define svc_recv(xprt, msg) \ 572 (*(xprt)->xp_ops->xp_recv)((xprt), (msg)) 573 574 #define SVC_STAT(xprt) \ 575 (*(xprt)->xp_ops->xp_stat)(xprt) 576 #define svc_stat(xprt) \ 577 (*(xprt)->xp_ops->xp_stat)(xprt) 578 579 #define SVC_GETARGS(xprt, xargs, argsp) \ 580 (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp)) 581 #define svc_getargs(xprt, xargs, argsp) \ 582 (*(xprt)->xp_ops->xp_getargs)((xprt), (xargs), (argsp)) 583 584 #define SVC_REPLY(xprt, msg) \ 585 (*(xprt)->xp_ops->xp_reply) ((xprt), (msg)) 586 #define svc_reply(xprt, msg) \ 587 (*(xprt)->xp_ops->xp_reply) ((xprt), (msg)) 588 589 #define SVC_FREEARGS(xprt, xargs, argsp) \ 590 (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp)) 591 #define svc_freeargs(xprt, xargs, argsp) \ 592 (*(xprt)->xp_ops->xp_freeargs)((xprt), (xargs), (argsp)) 593 594 #define SVC_GETRES(xprt, size) \ 595 (*(xprt)->xp_ops->xp_getres)((xprt), (size)) 596 #define svc_getres(xprt, size) \ 597 (*(xprt)->xp_ops->xp_getres)((xprt), (size)) 598 599 #define SVC_FREERES(xprt) \ 600 (*(xprt)->xp_ops->xp_freeres)(xprt) 601 #define svc_freeres(xprt) \ 602 (*(xprt)->xp_ops->xp_freeres)(xprt) 603 604 #define SVC_DESTROY(xprt) \ 605 (*(xprt)->xp_ops->xp_destroy)(xprt) 606 #define svc_destroy(xprt) \ 607 (*(xprt)->xp_ops->xp_destroy)(xprt) 608 609 /* 610 * PSARC 2003/523 Contract Private Interface 611 * SVC_CONTROL 612 * Changes must be reviewed by Solaris File Sharing 613 * Changes must be communicated to contract-2003-523@sun.com 614 */ 615 #define SVC_CONTROL(xprt, rq, in) \ 616 (*(xprt)->xp_ops->xp_control)((xprt), (rq), (in)) 617 #endif /* _KERNEL */ 618 619 /* 620 * Pool id's reserved for NFS, NLM, and the NFSv4 callback program. 621 */ 622 #define NFS_SVCPOOL_ID 0x01 623 #define NLM_SVCPOOL_ID 0x02 624 #define NFS_CB_SVCPOOL_ID 0x03 625 #define RDC_SVCPOOL_ID 0x05 /* SNDR, PSARC 2001/699 */ 626 627 struct svcpool_args { 628 uint32_t id; /* Pool id */ 629 uint32_t maxthreads; /* Max threads in the pool */ 630 uint32_t redline; /* `Redline' for the pool */ 631 uint32_t qsize; /* `xprt-ready' queue size */ 632 uint32_t timeout; /* svc_poll() timeout */ 633 uint32_t stksize; /* svc_run() stack size */ 634 uint32_t max_same_xprt; /* Max reqs from the same xprt */ 635 }; 636 637 638 #ifdef _KERNEL 639 /* 640 * Transport registration and thread pool creation. 641 */ 642 extern int svc_xprt_register(SVCMASTERXPRT *, int); 643 extern void svc_xprt_unregister(SVCMASTERXPRT *); 644 extern int svc_pool_create(struct svcpool_args *); 645 extern int svc_wait(int); 646 extern int svc_do_run(int); 647 #define SVCPSET_SHUTDOWN_PROC 1 648 #define SVCPSET_UNREGISTER_PROC 2 649 extern int svc_pool_control(int, int, void *); 650 #else /* _KERNEL */ 651 #ifdef __STDC__ 652 extern bool_t rpc_reg(const rpcprog_t, const rpcvers_t, const rpcproc_t, 653 char *(*)(char *), const xdrproc_t, const xdrproc_t, 654 const char *); 655 656 /* 657 * Service registration 658 * 659 * svc_reg(xprt, prog, vers, dispatch, nconf) 660 * const SVCXPRT *xprt; 661 * const rpcprog_t prog; 662 * const rpcvers_t vers; 663 * const void (*dispatch)(); 664 * const struct netconfig *nconf; 665 */ 666 extern bool_t svc_reg(const SVCXPRT *, const rpcprog_t, const rpcvers_t, 667 void (*)(struct svc_req *, SVCXPRT *), 668 const struct netconfig *); 669 670 /* 671 * Service authentication registration 672 * 673 * svc_auth_reg(cred_flavor, handler) 674 * int cred_flavor; 675 * enum auth_stat (*handler)(); 676 */ 677 extern int svc_auth_reg(int, enum auth_stat (*)()); 678 679 /* 680 * Service un-registration 681 * 682 * svc_unreg(prog, vers) 683 * const rpcprog_t prog; 684 * const rpcvers_t vers; 685 */ 686 extern void svc_unreg(const rpcprog_t, const rpcvers_t); 687 688 /* 689 * Transport registration/unregistration. 690 * 691 * xprt_register(xprt) 692 * const SVCXPRT *xprt; 693 * 694 * xprt_unregister(xprt) 695 * const SVCXPRT *xprt; 696 */ 697 extern void xprt_register(const SVCXPRT *); 698 extern void xprt_unregister(const SVCXPRT *); 699 #else /* __STDC__ */ 700 extern bool_t rpc_reg(); 701 extern bool_t svc_reg(); 702 extern bool_t svc_auth_reg(); 703 extern void svc_unreg(); 704 extern void xprt_register(); 705 extern void xprt_unregister(); 706 #endif /* __STDC__ */ 707 #endif /* _KERNEL */ 708 709 710 /* 711 * When the service routine is called, it must first check to see if it 712 * knows about the procedure; if not, it should call svcerr_noproc 713 * and return. If so, it should deserialize its arguments via 714 * SVC_GETARGS (defined above). If the deserialization does not work, 715 * svcerr_decode should be called followed by a return. Successful 716 * decoding of the arguments should be followed the execution of the 717 * procedure's code and a call to svc_sendreply. 718 * 719 * Also, if the service refuses to execute the procedure due to too- 720 * weak authentication parameters, svcerr_weakauth should be called. 721 * Note: do not confuse access-control failure with weak authentication! 722 * 723 * NB: In pure implementations of rpc, the caller always waits for a reply 724 * msg. This message is sent when svc_sendreply is called. 725 * Therefore pure service implementations should always call 726 * svc_sendreply even if the function logically returns void; use 727 * xdr.h - xdr_void for the xdr routine. HOWEVER, connectionful rpc allows 728 * for the abuse of pure rpc via batched calling or pipelining. In the 729 * case of a batched call, svc_sendreply should NOT be called since 730 * this would send a return message, which is what batching tries to avoid. 731 * It is the service/protocol writer's responsibility to know which calls are 732 * batched and which are not. Warning: responding to batch calls may 733 * deadlock the caller and server processes! 734 */ 735 #ifdef __STDC__ 736 extern bool_t svc_sendreply(const SVCXPRT *, const xdrproc_t, const caddr_t); 737 extern void svcerr_decode(const SVCXPRT *); 738 extern void svcerr_weakauth(const SVCXPRT *); 739 extern void svcerr_noproc(const SVCXPRT *); 740 extern void svcerr_progvers(const SVCXPRT *, const rpcvers_t, 741 const rpcvers_t); 742 extern void svcerr_auth(const SVCXPRT *, const enum auth_stat); 743 extern void svcerr_noprog(const SVCXPRT *); 744 extern void svcerr_systemerr(const SVCXPRT *); 745 extern void svcerr_badcred(const SVCXPRT *); 746 #else /* __STDC__ */ 747 extern bool_t svc_sendreply(); 748 extern void svcerr_decode(); 749 extern void svcerr_weakauth(); 750 extern void svcerr_noproc(); 751 extern void svcerr_progvers(); 752 extern void svcerr_auth(); 753 extern void svcerr_noprog(); 754 extern void svcerr_systemerr(); 755 extern void svcerr_badcred(); 756 #endif /* __STDC__ */ 757 758 #ifdef _KERNEL 759 /* 760 * Kernel RPC functions. 761 */ 762 extern void svc_init(void); 763 extern void svc_cots_init(void); 764 extern void svc_clts_init(void); 765 extern void mt_kstat_init(void); 766 extern void mt_kstat_fini(void); 767 extern int svc_tli_kcreate(struct file *, uint_t, char *, 768 struct netbuf *, SVCMASTERXPRT **, 769 SVC_CALLOUT_TABLE *, 770 void (*closeproc)(const SVCMASTERXPRT *), 771 int, bool_t); 772 extern int svc_clts_kcreate(struct file *, uint_t, struct T_info_ack *, 773 SVCMASTERXPRT **); 774 extern int svc_cots_kcreate(struct file *, uint_t, struct T_info_ack *, 775 SVCMASTERXPRT **); 776 extern void svc_queuereq(queue_t *, mblk_t *); 777 extern void svc_queueclean(queue_t *); 778 extern void svc_queueclose(queue_t *); 779 extern int svc_reserve_thread(SVCXPRT *); 780 extern void svc_unreserve_thread(SVCXPRT *); 781 extern callb_cpr_t *svc_detach_thread(SVCXPRT *); 782 783 /* 784 * For RDMA based kRPC. 785 * "rdma_xprt_record" is a reference to master transport handles 786 * in kRPC thread pools. This is an easy way of tracking and shuting 787 * down rdma based kRPC transports on demand. 788 * "rdma_xprt_group" is a list of RDMA based mster transport handles 789 * or records in a kRPC thread pool. 790 */ 791 typedef struct rdma_xprt_record rdma_xprt_record_t; 792 struct rdma_xprt_record { 793 int rtr_type; /* Type of rdma; IB/VI/RDDP */ 794 SVCMASTERXPRT *rtr_xprt_ptr; /* Ptr to master xprt handle */ 795 rdma_xprt_record_t *rtr_next; /* Ptr to next record */ 796 }; 797 798 typedef struct { 799 int rtg_count; /* Number transport records */ 800 int rtg_poolid; /* Pool Id for this group */ 801 rdma_xprt_record_t *rtg_listhead; /* Head of the records list */ 802 } rdma_xprt_group_t; 803 804 extern int svc_rdma_kcreate(char *, SVC_CALLOUT_TABLE *, int, 805 rdma_xprt_group_t *); 806 extern void svc_rdma_kstop(SVCMASTERXPRT *); 807 extern void svc_rdma_kdestroy(SVCMASTERXPRT *); 808 extern void rdma_stop(rdma_xprt_group_t *); 809 810 /* 811 * GSS cleanup method. 812 */ 813 extern void rpc_gss_cleanup(SVCXPRT *); 814 #else /* _KERNEL */ 815 /* 816 * Lowest level dispatching -OR- who owns this process anyway. 817 * Somebody has to wait for incoming requests and then call the correct 818 * service routine. The routine svc_run does infinite waiting; i.e., 819 * svc_run never returns. 820 * Since another (co-existant) package may wish to selectively wait for 821 * incoming calls or other events outside of the rpc architecture, the 822 * routine svc_getreq_poll is provided. It must be passed pollfds, the 823 * "in-place" results of a poll call (see poll, section 2). 824 */ 825 826 /* 827 * Global keeper of rpc service descriptors in use 828 * dynamic; must be inspected before each call to select or poll 829 */ 830 extern pollfd_t *svc_pollfd; 831 extern int svc_max_pollfd; 832 extern fd_set svc_fdset; 833 #if !defined(_LP64) && FD_SETSIZE > 1024 834 extern fd_set _new_svc_fdset; 835 #ifdef __PRAGMA_REDEFINE_EXTNAME 836 #pragma redefine_extname svc_fdset _new_svc_fdset 837 #else /* __PRAGMA_REDEFINE_EXTNAME */ 838 #define svc_fdset _new_svc_fdset 839 #endif /* __PRAGMA_REDEFINE_EXTNAME */ 840 #endif /* LP64 && FD_SETSIZE > 1024 */ 841 #define svc_fds svc_fdset.fds_bits[0] /* compatibility */ 842 843 /* 844 * A small program implemented by the svc_rpc implementation itself. 845 * Also see clnt.h for protocol numbers. 846 */ 847 #ifdef __STDC__ 848 extern void svc_getreq(int); 849 extern void svc_getreq_common(const int); 850 extern void svc_getreqset(fd_set *); /* takes fdset instead of int */ 851 extern void svc_getreq_poll(struct pollfd *, const int); 852 extern void svc_run(void); 853 extern void svc_exit(void); 854 #else /* __STDC__ */ 855 extern void rpctest_service(); 856 extern void svc_getreqset(); 857 extern void svc_getreq(); 858 extern void svc_getreq_common(); 859 extern void svc_getreqset(); /* takes fdset instead of int */ 860 extern void svc_getreq_poll(); 861 extern void svc_run(); 862 extern void svc_exit(); 863 #endif /* __STDC__ */ 864 865 /* 866 * Functions used to manage user file descriptors 867 */ 868 typedef int svc_input_id_t; 869 typedef void (*svc_callback_t)(svc_input_id_t id, int fd, 870 unsigned int events, void* cookie); 871 872 #ifdef __STDC__ 873 extern svc_input_id_t svc_add_input(int fd, unsigned int events, 874 svc_callback_t user_callback, 875 void* cookie); 876 extern int svc_remove_input(svc_input_id_t id); 877 #else /* __STDC__ */ 878 extern svc_input_id_t svc_add_input(); 879 extern int svc_remove_input(); 880 #endif 881 882 /* 883 * These are the existing service side transport implementations. 884 * 885 * Transport independent svc_create routine. 886 */ 887 #ifdef __STDC__ 888 extern int svc_create(void (*)(struct svc_req *, SVCXPRT *), 889 const rpcprog_t, const rpcvers_t, 890 const char *); 891 /* 892 * void (*dispatch)(); -- dispatch routine 893 * const rpcprog_t prognum; -- program number 894 * const rpcvers_t versnum; -- version number 895 * const char *nettype; -- network type 896 */ 897 898 /* 899 * Generic server creation routine. It takes a netconfig structure 900 * instead of a nettype. 901 */ 902 extern SVCXPRT *svc_tp_create(void (*)(struct svc_req *, SVCXPRT *), 903 const rpcprog_t, const rpcvers_t, 904 const struct netconfig *); 905 /* 906 * void (*dispatch)(); -- dispatch routine 907 * const rpcprog_t prognum; -- program number 908 * const rpcvers_t versnum; -- version number 909 * const struct netconfig *nconf; -- netconfig structure 910 */ 911 912 /* 913 * Generic TLI create routine 914 */ 915 extern SVCXPRT *svc_tli_create(const int, const struct netconfig *, 916 const struct t_bind *, const uint_t, 917 const uint_t); 918 /* 919 * const int fd; -- connection end point 920 * const struct netconfig *nconf; -- netconfig structure 921 * const struct t_bind *bindaddr; -- local bind address 922 * const uint_t sendsz; -- max sendsize 923 * const uint_t recvsz; -- max recvsize 924 */ 925 926 /* 927 * Connectionless and connectionful create routines. 928 */ 929 extern SVCXPRT *svc_vc_create(const int, const uint_t, const uint_t); 930 /* 931 * const int fd; -- open connection end point 932 * const uint_t sendsize; -- max send size 933 * const uint_t recvsize; -- max recv size 934 */ 935 936 extern SVCXPRT *svc_dg_create(const int, const uint_t, const uint_t); 937 /* 938 * const int fd; -- open connection 939 * const uint_t sendsize; -- max send size 940 * const uint_t recvsize; -- max recv size 941 */ 942 943 /* 944 * the routine takes any *open* TLI file 945 * descriptor as its first input and is used for open connections. 946 */ 947 extern SVCXPRT *svc_fd_create(const int, const uint_t, const uint_t); 948 /* 949 * const int fd; -- open connection end point 950 * const uint_t sendsize; -- max send size 951 * const uint_t recvsize; -- max recv size 952 */ 953 954 /* 955 * Memory based rpc (for speed check and testing) 956 */ 957 extern SVCXPRT *svc_raw_create(void); 958 959 /* 960 * Creation of service over doors transport. 961 */ 962 extern SVCXPRT *svc_door_create(void (*)(struct svc_req *, SVCXPRT *), 963 const rpcprog_t, const rpcvers_t, 964 const uint_t); 965 /* 966 * void (*dispatch)(); -- dispatch routine 967 * const rpcprog_t prognum; -- program number 968 * const rpcvers_t versnum; -- version number 969 * const uint_t sendsize; -- send buffer size 970 */ 971 972 /* 973 * Service control interface 974 */ 975 extern bool_t svc_control(SVCXPRT *, const uint_t, void *); 976 /* 977 * SVCXPRT *svc; -- service to manipulate 978 * const uint_t req; -- request 979 * void *info; -- argument to request 980 */ 981 982 /* 983 * svc_dg_enable_cache() enables the cache on dg transports. 984 */ 985 extern int svc_dg_enablecache(SVCXPRT *, const uint_t); 986 #else /* __STDC__ */ 987 extern int svc_create(); 988 extern SVCXPRT *svc_tp_create(); 989 extern SVCXPRT *svc_tli_create(); 990 extern SVCXPRT *svc_vc_create(); 991 extern SVCXPRT *svc_dg_create(); 992 extern SVCXPRT *svc_fd_create(); 993 extern SVCXPRT *svc_raw_create(); 994 extern SVCXPRT *svc_door_create(); 995 extern int svc_dg_enablecache(); 996 #endif /* __STDC__ */ 997 998 extern boolean_t is_multilevel(rpcprog_t); 999 1000 #ifdef PORTMAP 1001 /* For backward compatibility */ 1002 #include <rpc/svc_soc.h> 1003 #endif /* PORTMAP */ 1004 1005 /* 1006 * For user level MT hot server functions 1007 */ 1008 1009 /* 1010 * Different MT modes 1011 */ 1012 #define RPC_SVC_MT_NONE 0 /* default, single-threaded */ 1013 #define RPC_SVC_MT_AUTO 1 /* automatic MT mode */ 1014 #define RPC_SVC_MT_USER 2 /* user MT mode */ 1015 1016 #ifdef __STDC__ 1017 extern void svc_done(SVCXPRT *); 1018 #else 1019 extern void svc_done(); 1020 #endif /* __STDC__ */ 1021 1022 /* 1023 * Obtaining local credentials. 1024 */ 1025 typedef struct __svc_local_cred_t { 1026 uid_t euid; /* effective uid */ 1027 gid_t egid; /* effective gid */ 1028 uid_t ruid; /* real uid */ 1029 gid_t rgid; /* real gid */ 1030 pid_t pid; /* caller's pid, or -1 if not available */ 1031 } svc_local_cred_t; 1032 1033 #ifdef __STDC__ 1034 struct ucred_s; 1035 extern void svc_fd_negotiate_ucred(int); 1036 extern int svc_getcallerucred(const SVCXPRT *, struct ucred_s **); 1037 extern bool_t svc_get_local_cred(SVCXPRT *, svc_local_cred_t *); 1038 #else 1039 extern void svc_fd_negotiate_ucred(); 1040 extern int svc_getcallerucred(); 1041 extern bool_t svc_get_local_cred(); 1042 #endif /* __STDC__ */ 1043 1044 /* 1045 * Private interfaces and structures for user level duplicate request caching. 1046 * The interfaces and data structures are not committed and subject to 1047 * change in future releases. Currently only intended for use by automountd. 1048 */ 1049 struct dupreq { 1050 uint32_t dr_xid; 1051 rpcproc_t dr_proc; 1052 rpcvers_t dr_vers; 1053 rpcprog_t dr_prog; 1054 struct netbuf dr_addr; 1055 struct netbuf dr_resp; 1056 int dr_status; 1057 time_t dr_time; 1058 uint_t dr_hash; 1059 struct dupreq *dr_next; 1060 struct dupreq *dr_prev; 1061 struct dupreq *dr_chain; 1062 struct dupreq *dr_prevchain; 1063 }; 1064 1065 /* 1066 * The fixedtime state is defined if we want to expand the routines to 1067 * handle and encompass fixed size caches. 1068 */ 1069 #define DUPCACHE_FIXEDTIME 0 1070 1071 /* 1072 * States of requests for duplicate request caching. 1073 * These are the same as defined for the kernel. 1074 */ 1075 #define DUP_NEW 0x00 /* new entry */ 1076 #define DUP_INPROGRESS 0x01 /* request already going */ 1077 #define DUP_DONE 0x02 /* request done */ 1078 #define DUP_DROP 0x03 /* request dropped */ 1079 #define DUP_ERROR 0x04 /* error in dup req cache */ 1080 1081 #ifdef __STDC__ 1082 extern bool_t __svc_dupcache_init(void *, int, char **); 1083 extern int __svc_dup(struct svc_req *, caddr_t *, uint_t *, char *); 1084 extern int __svc_dupdone(struct svc_req *, caddr_t, uint_t, int, char *); 1085 extern bool_t __svc_vc_dupcache_init(SVCXPRT *, void *, int); 1086 extern int __svc_vc_dup(struct svc_req *, caddr_t *, uint_t *); 1087 extern int __svc_vc_dupdone(struct svc_req *, caddr_t, uint_t, int); 1088 #else 1089 extern bool_t __svc_dupcache_init(); 1090 extern int __svc_dup(); 1091 extern int __svc_dupdone(); 1092 extern bool_t __svc_vc_dupcache_init(); 1093 extern int __svc_vc_dup(); 1094 extern int __svc_vc_dupdone(); 1095 #endif /* __STDC__ */ 1096 #endif /* _KERNEL */ 1097 1098 #ifdef __cplusplus 1099 } 1100 #endif 1101 1102 #endif /* !_RPC_SVC_H */ 1103