clnt_vc.c revision 220585
1177633Sdfr/* $NetBSD: clnt_vc.c,v 1.4 2000/07/14 08:40:42 fvdl Exp $ */ 2177633Sdfr 3177633Sdfr/* 4177633Sdfr * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5177633Sdfr * unrestricted use provided that this legend is included on all tape 6177633Sdfr * media and as a part of the software program in whole or part. Users 7177633Sdfr * may copy or modify Sun RPC without charge, but are not authorized 8177633Sdfr * to license or distribute it to anyone else except as part of a product or 9177633Sdfr * program developed by the user. 10177633Sdfr * 11177633Sdfr * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12177633Sdfr * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13177633Sdfr * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14177633Sdfr * 15177633Sdfr * Sun RPC is provided with no support and without any obligation on the 16177633Sdfr * part of Sun Microsystems, Inc. to assist in its use, correction, 17177633Sdfr * modification or enhancement. 18177633Sdfr * 19177633Sdfr * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20177633Sdfr * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21177633Sdfr * OR ANY PART THEREOF. 22177633Sdfr * 23177633Sdfr * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24177633Sdfr * or profits or other special, indirect and consequential damages, even if 25177633Sdfr * Sun has been advised of the possibility of such damages. 26177633Sdfr * 27177633Sdfr * Sun Microsystems, Inc. 28177633Sdfr * 2550 Garcia Avenue 29177633Sdfr * Mountain View, California 94043 30177633Sdfr */ 31177633Sdfr 32177633Sdfr#if defined(LIBC_SCCS) && !defined(lint) 33177633Sdfrstatic char *sccsid2 = "@(#)clnt_tcp.c 1.37 87/10/05 Copyr 1984 Sun Micro"; 34177633Sdfrstatic char *sccsid = "@(#)clnt_tcp.c 2.2 88/08/01 4.0 RPCSRC"; 35177633Sdfrstatic char sccsid3[] = "@(#)clnt_vc.c 1.19 89/03/16 Copyr 1988 Sun Micro"; 36177633Sdfr#endif 37177633Sdfr#include <sys/cdefs.h> 38177633Sdfr__FBSDID("$FreeBSD: head/sys/rpc/clnt_vc.c 220585 2011-04-13 00:03:49Z rmacklem $"); 39177633Sdfr 40177633Sdfr/* 41177633Sdfr * clnt_tcp.c, Implements a TCP/IP based, client side RPC. 42177633Sdfr * 43177633Sdfr * Copyright (C) 1984, Sun Microsystems, Inc. 44177633Sdfr * 45177633Sdfr * TCP based RPC supports 'batched calls'. 46177633Sdfr * A sequence of calls may be batched-up in a send buffer. The rpc call 47177633Sdfr * return immediately to the client even though the call was not necessarily 48177633Sdfr * sent. The batching occurs if the results' xdr routine is NULL (0) AND 49177633Sdfr * the rpc timeout value is zero (see clnt.h, rpc). 50177633Sdfr * 51177633Sdfr * Clients should NOT casually batch calls that in fact return results; that is, 52177633Sdfr * the server side should be aware that a call is batched and not produce any 53177633Sdfr * return message. Batched calls that produce many result messages can 54177633Sdfr * deadlock (netlock) the client and the server.... 55177633Sdfr * 56177633Sdfr * Now go hang yourself. 57177633Sdfr */ 58177633Sdfr 59177633Sdfr#include <sys/param.h> 60177633Sdfr#include <sys/systm.h> 61177633Sdfr#include <sys/lock.h> 62177633Sdfr#include <sys/malloc.h> 63177633Sdfr#include <sys/mbuf.h> 64177633Sdfr#include <sys/mutex.h> 65177633Sdfr#include <sys/pcpu.h> 66177633Sdfr#include <sys/proc.h> 67184588Sdfr#include <sys/protosw.h> 68177633Sdfr#include <sys/socket.h> 69177633Sdfr#include <sys/socketvar.h> 70177633Sdfr#include <sys/syslog.h> 71177633Sdfr#include <sys/time.h> 72177633Sdfr#include <sys/uio.h> 73196503Szec 74196503Szec#include <net/vnet.h> 75196503Szec 76184588Sdfr#include <netinet/tcp.h> 77177633Sdfr 78177633Sdfr#include <rpc/rpc.h> 79177685Sdfr#include <rpc/rpc_com.h> 80177633Sdfr 81177633Sdfr#define MCALL_MSG_SIZE 24 82177633Sdfr 83177633Sdfrstruct cmessage { 84177633Sdfr struct cmsghdr cmsg; 85177633Sdfr struct cmsgcred cmcred; 86177633Sdfr}; 87177633Sdfr 88180025Sdfrstatic enum clnt_stat clnt_vc_call(CLIENT *, struct rpc_callextra *, 89184588Sdfr rpcproc_t, struct mbuf *, struct mbuf **, struct timeval); 90177633Sdfrstatic void clnt_vc_geterr(CLIENT *, struct rpc_err *); 91177633Sdfrstatic bool_t clnt_vc_freeres(CLIENT *, xdrproc_t, void *); 92177633Sdfrstatic void clnt_vc_abort(CLIENT *); 93177633Sdfrstatic bool_t clnt_vc_control(CLIENT *, u_int, void *); 94184588Sdfrstatic void clnt_vc_close(CLIENT *); 95177633Sdfrstatic void clnt_vc_destroy(CLIENT *); 96177633Sdfrstatic bool_t time_not_ok(struct timeval *); 97193272Sjhbstatic int clnt_vc_soupcall(struct socket *so, void *arg, int waitflag); 98177633Sdfr 99177633Sdfrstatic struct clnt_ops clnt_vc_ops = { 100177633Sdfr .cl_call = clnt_vc_call, 101177633Sdfr .cl_abort = clnt_vc_abort, 102177633Sdfr .cl_geterr = clnt_vc_geterr, 103177633Sdfr .cl_freeres = clnt_vc_freeres, 104184588Sdfr .cl_close = clnt_vc_close, 105177633Sdfr .cl_destroy = clnt_vc_destroy, 106177633Sdfr .cl_control = clnt_vc_control 107177633Sdfr}; 108177633Sdfr 109177633Sdfr/* 110180025Sdfr * A pending RPC request which awaits a reply. Requests which have 111180025Sdfr * received their reply will have cr_xid set to zero and cr_mrep to 112180025Sdfr * the mbuf chain of the reply. 113177633Sdfr */ 114177633Sdfrstruct ct_request { 115177633Sdfr TAILQ_ENTRY(ct_request) cr_link; 116177633Sdfr uint32_t cr_xid; /* XID of request */ 117177633Sdfr struct mbuf *cr_mrep; /* reply received by upcall */ 118177633Sdfr int cr_error; /* any error from upcall */ 119184588Sdfr char cr_verf[MAX_AUTH_BYTES]; /* reply verf */ 120177633Sdfr}; 121177633Sdfr 122177633SdfrTAILQ_HEAD(ct_request_list, ct_request); 123177633Sdfr 124177633Sdfrstruct ct_data { 125177633Sdfr struct mtx ct_lock; 126180025Sdfr int ct_threads; /* number of threads in clnt_vc_call */ 127184588Sdfr bool_t ct_closing; /* TRUE if we are closing */ 128184588Sdfr bool_t ct_closed; /* TRUE if we are closed */ 129177633Sdfr struct socket *ct_socket; /* connection socket */ 130177633Sdfr bool_t ct_closeit; /* close it on destroy */ 131177633Sdfr struct timeval ct_wait; /* wait interval in milliseconds */ 132177633Sdfr struct sockaddr_storage ct_addr; /* remote addr */ 133177633Sdfr struct rpc_err ct_error; 134177633Sdfr uint32_t ct_xid; 135177633Sdfr char ct_mcallc[MCALL_MSG_SIZE]; /* marshalled callmsg */ 136177633Sdfr size_t ct_mpos; /* pos after marshal */ 137177633Sdfr const char *ct_waitchan; 138177633Sdfr int ct_waitflag; 139177633Sdfr struct mbuf *ct_record; /* current reply record */ 140177633Sdfr size_t ct_record_resid; /* how much left of reply to read */ 141177633Sdfr bool_t ct_record_eor; /* true if reading last fragment */ 142177633Sdfr struct ct_request_list ct_pending; 143193437Srmacklem int ct_upcallrefs; /* Ref cnt of upcalls in prog. */ 144177633Sdfr}; 145177633Sdfr 146193437Srmacklemstatic void clnt_vc_upcallsdone(struct ct_data *); 147193437Srmacklem 148177633Sdfrstatic const char clnt_vc_errstr[] = "%s : %s"; 149177633Sdfrstatic const char clnt_vc_str[] = "clnt_vc_create"; 150177633Sdfrstatic const char clnt_read_vc_str[] = "read_vc"; 151177633Sdfrstatic const char __no_mem_str[] = "out of memory"; 152177633Sdfr 153177633Sdfr/* 154177633Sdfr * Create a client handle for a connection. 155177633Sdfr * Default options are set, which the user can change using clnt_control()'s. 156177633Sdfr * The rpc/vc package does buffering similar to stdio, so the client 157177633Sdfr * must pick send and receive buffer sizes, 0 => use the default. 158177633Sdfr * NB: fd is copied into a private area. 159177633Sdfr * NB: The rpch->cl_auth is set null authentication. Caller may wish to 160177633Sdfr * set this something more useful. 161177633Sdfr * 162177633Sdfr * fd should be an open socket 163177633Sdfr */ 164177633SdfrCLIENT * 165177633Sdfrclnt_vc_create( 166177633Sdfr struct socket *so, /* open file descriptor */ 167177633Sdfr struct sockaddr *raddr, /* servers address */ 168177633Sdfr const rpcprog_t prog, /* program number */ 169177633Sdfr const rpcvers_t vers, /* version number */ 170177633Sdfr size_t sendsz, /* buffer recv size */ 171177633Sdfr size_t recvsz) /* buffer send size */ 172177633Sdfr{ 173177633Sdfr CLIENT *cl; /* client handle */ 174177633Sdfr struct ct_data *ct = NULL; /* client handle */ 175177633Sdfr struct timeval now; 176177633Sdfr struct rpc_msg call_msg; 177177633Sdfr static uint32_t disrupt; 178177633Sdfr struct __rpc_sockinfo si; 179177633Sdfr XDR xdrs; 180184588Sdfr int error, interrupted, one = 1; 181184588Sdfr struct sockopt sopt; 182177633Sdfr 183177633Sdfr if (disrupt == 0) 184177633Sdfr disrupt = (uint32_t)(long)raddr; 185177633Sdfr 186177633Sdfr cl = (CLIENT *)mem_alloc(sizeof (*cl)); 187177633Sdfr ct = (struct ct_data *)mem_alloc(sizeof (*ct)); 188177633Sdfr 189177633Sdfr mtx_init(&ct->ct_lock, "ct->ct_lock", NULL, MTX_DEF); 190180025Sdfr ct->ct_threads = 0; 191180025Sdfr ct->ct_closing = FALSE; 192184588Sdfr ct->ct_closed = FALSE; 193193437Srmacklem ct->ct_upcallrefs = 0; 194177633Sdfr 195177633Sdfr if ((so->so_state & (SS_ISCONNECTED|SS_ISCONFIRMING)) == 0) { 196177633Sdfr error = soconnect(so, raddr, curthread); 197180025Sdfr SOCK_LOCK(so); 198180025Sdfr interrupted = 0; 199180025Sdfr while ((so->so_state & SS_ISCONNECTING) 200180025Sdfr && so->so_error == 0) { 201180025Sdfr error = msleep(&so->so_timeo, SOCK_MTX(so), 202195703Skib PSOCK | PCATCH | PBDRY, "connec", 0); 203180025Sdfr if (error) { 204180025Sdfr if (error == EINTR || error == ERESTART) 205180025Sdfr interrupted = 1; 206180025Sdfr break; 207180025Sdfr } 208180025Sdfr } 209180025Sdfr if (error == 0) { 210180025Sdfr error = so->so_error; 211180025Sdfr so->so_error = 0; 212180025Sdfr } 213180025Sdfr SOCK_UNLOCK(so); 214177633Sdfr if (error) { 215180025Sdfr if (!interrupted) 216180025Sdfr so->so_state &= ~SS_ISCONNECTING; 217177633Sdfr rpc_createerr.cf_stat = RPC_SYSTEMERROR; 218177633Sdfr rpc_createerr.cf_error.re_errno = error; 219177633Sdfr goto err; 220177633Sdfr } 221177633Sdfr } 222177633Sdfr 223196503Szec if (!__rpc_socket2sockinfo(so, &si)) { 224177633Sdfr goto err; 225196503Szec } 226177633Sdfr 227184588Sdfr if (so->so_proto->pr_flags & PR_CONNREQUIRED) { 228184588Sdfr bzero(&sopt, sizeof(sopt)); 229184588Sdfr sopt.sopt_dir = SOPT_SET; 230184588Sdfr sopt.sopt_level = SOL_SOCKET; 231184588Sdfr sopt.sopt_name = SO_KEEPALIVE; 232184588Sdfr sopt.sopt_val = &one; 233184588Sdfr sopt.sopt_valsize = sizeof(one); 234184588Sdfr sosetopt(so, &sopt); 235184588Sdfr } 236184588Sdfr 237184588Sdfr if (so->so_proto->pr_protocol == IPPROTO_TCP) { 238184588Sdfr bzero(&sopt, sizeof(sopt)); 239184588Sdfr sopt.sopt_dir = SOPT_SET; 240184588Sdfr sopt.sopt_level = IPPROTO_TCP; 241184588Sdfr sopt.sopt_name = TCP_NODELAY; 242184588Sdfr sopt.sopt_val = &one; 243184588Sdfr sopt.sopt_valsize = sizeof(one); 244184588Sdfr sosetopt(so, &sopt); 245184588Sdfr } 246184588Sdfr 247177633Sdfr ct->ct_closeit = FALSE; 248177633Sdfr 249177633Sdfr /* 250177633Sdfr * Set up private data struct 251177633Sdfr */ 252177633Sdfr ct->ct_socket = so; 253177633Sdfr ct->ct_wait.tv_sec = -1; 254177633Sdfr ct->ct_wait.tv_usec = -1; 255177633Sdfr memcpy(&ct->ct_addr, raddr, raddr->sa_len); 256177633Sdfr 257177633Sdfr /* 258177633Sdfr * Initialize call message 259177633Sdfr */ 260177633Sdfr getmicrotime(&now); 261177633Sdfr ct->ct_xid = ((uint32_t)++disrupt) ^ __RPC_GETXID(&now); 262177633Sdfr call_msg.rm_xid = ct->ct_xid; 263177633Sdfr call_msg.rm_direction = CALL; 264177633Sdfr call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 265177633Sdfr call_msg.rm_call.cb_prog = (uint32_t)prog; 266177633Sdfr call_msg.rm_call.cb_vers = (uint32_t)vers; 267177633Sdfr 268177633Sdfr /* 269177633Sdfr * pre-serialize the static part of the call msg and stash it away 270177633Sdfr */ 271177633Sdfr xdrmem_create(&xdrs, ct->ct_mcallc, MCALL_MSG_SIZE, 272177633Sdfr XDR_ENCODE); 273177633Sdfr if (! xdr_callhdr(&xdrs, &call_msg)) { 274177633Sdfr if (ct->ct_closeit) { 275177633Sdfr soclose(ct->ct_socket); 276177633Sdfr } 277177633Sdfr goto err; 278177633Sdfr } 279177633Sdfr ct->ct_mpos = XDR_GETPOS(&xdrs); 280177633Sdfr XDR_DESTROY(&xdrs); 281177633Sdfr ct->ct_waitchan = "rpcrecv"; 282177633Sdfr ct->ct_waitflag = 0; 283177633Sdfr 284177633Sdfr /* 285177633Sdfr * Create a client handle which uses xdrrec for serialization 286177633Sdfr * and authnone for authentication. 287177633Sdfr */ 288213756Srmacklem sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz); 289213756Srmacklem recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz); 290213756Srmacklem error = soreserve(ct->ct_socket, sendsz, recvsz); 291213756Srmacklem if (error != 0) { 292213756Srmacklem if (ct->ct_closeit) { 293213756Srmacklem soclose(ct->ct_socket); 294213756Srmacklem } 295213756Srmacklem goto err; 296213756Srmacklem } 297180025Sdfr cl->cl_refs = 1; 298177633Sdfr cl->cl_ops = &clnt_vc_ops; 299177633Sdfr cl->cl_private = ct; 300177633Sdfr cl->cl_auth = authnone_create(); 301177633Sdfr 302177633Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_rcv); 303193272Sjhb soupcall_set(ct->ct_socket, SO_RCV, clnt_vc_soupcall, ct); 304177633Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_rcv); 305177633Sdfr 306177633Sdfr ct->ct_record = NULL; 307177633Sdfr ct->ct_record_resid = 0; 308177633Sdfr TAILQ_INIT(&ct->ct_pending); 309177633Sdfr return (cl); 310177633Sdfr 311177633Sdfrerr: 312177633Sdfr if (cl) { 313177633Sdfr if (ct) { 314184877Sdfr mtx_destroy(&ct->ct_lock); 315177633Sdfr mem_free(ct, sizeof (struct ct_data)); 316177633Sdfr } 317177633Sdfr if (cl) 318177633Sdfr mem_free(cl, sizeof (CLIENT)); 319177633Sdfr } 320177633Sdfr return ((CLIENT *)NULL); 321177633Sdfr} 322177633Sdfr 323177633Sdfrstatic enum clnt_stat 324177633Sdfrclnt_vc_call( 325184588Sdfr CLIENT *cl, /* client handle */ 326184588Sdfr struct rpc_callextra *ext, /* call metadata */ 327184588Sdfr rpcproc_t proc, /* procedure number */ 328184588Sdfr struct mbuf *args, /* pointer to args */ 329184588Sdfr struct mbuf **resultsp, /* pointer to results */ 330184588Sdfr struct timeval utimeout) 331177633Sdfr{ 332177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 333180025Sdfr AUTH *auth; 334184588Sdfr struct rpc_err *errp; 335184588Sdfr enum clnt_stat stat; 336177633Sdfr XDR xdrs; 337177633Sdfr struct rpc_msg reply_msg; 338177633Sdfr bool_t ok; 339177633Sdfr int nrefreshes = 2; /* number of times to refresh cred */ 340177633Sdfr struct timeval timeout; 341177633Sdfr uint32_t xid; 342184588Sdfr struct mbuf *mreq = NULL, *results; 343180025Sdfr struct ct_request *cr; 344177633Sdfr int error; 345177633Sdfr 346180025Sdfr cr = malloc(sizeof(struct ct_request), M_RPC, M_WAITOK); 347180025Sdfr 348177633Sdfr mtx_lock(&ct->ct_lock); 349177633Sdfr 350184588Sdfr if (ct->ct_closing || ct->ct_closed) { 351180025Sdfr mtx_unlock(&ct->ct_lock); 352180025Sdfr free(cr, M_RPC); 353180025Sdfr return (RPC_CANTSEND); 354180025Sdfr } 355180025Sdfr ct->ct_threads++; 356177633Sdfr 357184588Sdfr if (ext) { 358180025Sdfr auth = ext->rc_auth; 359184588Sdfr errp = &ext->rc_err; 360184588Sdfr } else { 361180025Sdfr auth = cl->cl_auth; 362184588Sdfr errp = &ct->ct_error; 363184588Sdfr } 364180025Sdfr 365180025Sdfr cr->cr_mrep = NULL; 366180025Sdfr cr->cr_error = 0; 367180025Sdfr 368177633Sdfr if (ct->ct_wait.tv_usec == -1) { 369177633Sdfr timeout = utimeout; /* use supplied timeout */ 370177633Sdfr } else { 371177633Sdfr timeout = ct->ct_wait; /* use default timeout */ 372177633Sdfr } 373177633Sdfr 374177633Sdfrcall_again: 375177633Sdfr mtx_assert(&ct->ct_lock, MA_OWNED); 376177633Sdfr 377177633Sdfr ct->ct_xid++; 378177633Sdfr xid = ct->ct_xid; 379177633Sdfr 380177633Sdfr mtx_unlock(&ct->ct_lock); 381177633Sdfr 382177633Sdfr /* 383177633Sdfr * Leave space to pre-pend the record mark. 384177633Sdfr */ 385177633Sdfr MGETHDR(mreq, M_WAIT, MT_DATA); 386177633Sdfr mreq->m_data += sizeof(uint32_t); 387184588Sdfr KASSERT(ct->ct_mpos + sizeof(uint32_t) <= MHLEN, 388184588Sdfr ("RPC header too big")); 389184588Sdfr bcopy(ct->ct_mcallc, mreq->m_data, ct->ct_mpos); 390184588Sdfr mreq->m_len = ct->ct_mpos; 391177633Sdfr 392177633Sdfr /* 393177633Sdfr * The XID is the first thing in the request. 394177633Sdfr */ 395177633Sdfr *mtod(mreq, uint32_t *) = htonl(xid); 396177633Sdfr 397177633Sdfr xdrmbuf_create(&xdrs, mreq, XDR_ENCODE); 398177633Sdfr 399184588Sdfr errp->re_status = stat = RPC_SUCCESS; 400177633Sdfr 401177633Sdfr if ((! XDR_PUTINT32(&xdrs, &proc)) || 402184588Sdfr (! AUTH_MARSHALL(auth, xid, &xdrs, 403184588Sdfr m_copym(args, 0, M_COPYALL, M_WAITOK)))) { 404184588Sdfr errp->re_status = stat = RPC_CANTENCODEARGS; 405180025Sdfr mtx_lock(&ct->ct_lock); 406180025Sdfr goto out; 407177633Sdfr } 408184588Sdfr mreq->m_pkthdr.len = m_length(mreq, NULL); 409177633Sdfr 410177633Sdfr /* 411177633Sdfr * Prepend a record marker containing the packet length. 412177633Sdfr */ 413177633Sdfr M_PREPEND(mreq, sizeof(uint32_t), M_WAIT); 414177633Sdfr *mtod(mreq, uint32_t *) = 415177633Sdfr htonl(0x80000000 | (mreq->m_pkthdr.len - sizeof(uint32_t))); 416177633Sdfr 417180025Sdfr cr->cr_xid = xid; 418177633Sdfr mtx_lock(&ct->ct_lock); 419199053Srmacklem /* 420199053Srmacklem * Check to see if the other end has already started to close down 421199053Srmacklem * the connection. The upcall will have set ct_error.re_status 422199053Srmacklem * to RPC_CANTRECV if this is the case. 423199053Srmacklem * If the other end starts to close down the connection after this 424199053Srmacklem * point, it will be detected later when cr_error is checked, 425199053Srmacklem * since the request is in the ct_pending queue. 426199053Srmacklem */ 427199053Srmacklem if (ct->ct_error.re_status == RPC_CANTRECV) { 428199053Srmacklem if (errp != &ct->ct_error) { 429199053Srmacklem errp->re_errno = ct->ct_error.re_errno; 430199053Srmacklem errp->re_status = RPC_CANTRECV; 431199053Srmacklem } 432199053Srmacklem stat = RPC_CANTRECV; 433199053Srmacklem goto out; 434199053Srmacklem } 435180025Sdfr TAILQ_INSERT_TAIL(&ct->ct_pending, cr, cr_link); 436177633Sdfr mtx_unlock(&ct->ct_lock); 437177633Sdfr 438177633Sdfr /* 439177633Sdfr * sosend consumes mreq. 440177633Sdfr */ 441177633Sdfr error = sosend(ct->ct_socket, NULL, NULL, mreq, NULL, 0, curthread); 442177633Sdfr mreq = NULL; 443184588Sdfr if (error == EMSGSIZE) { 444184588Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_snd); 445184588Sdfr sbwait(&ct->ct_socket->so_snd); 446184588Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_snd); 447184588Sdfr AUTH_VALIDATE(auth, xid, NULL, NULL); 448184588Sdfr mtx_lock(&ct->ct_lock); 449184588Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 450184588Sdfr goto call_again; 451184588Sdfr } 452177633Sdfr 453184588Sdfr reply_msg.acpted_rply.ar_verf.oa_flavor = AUTH_NULL; 454184588Sdfr reply_msg.acpted_rply.ar_verf.oa_base = cr->cr_verf; 455184588Sdfr reply_msg.acpted_rply.ar_verf.oa_length = 0; 456184588Sdfr reply_msg.acpted_rply.ar_results.where = NULL; 457184588Sdfr reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void; 458177633Sdfr 459177633Sdfr mtx_lock(&ct->ct_lock); 460177633Sdfr if (error) { 461180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 462184588Sdfr errp->re_errno = error; 463184588Sdfr errp->re_status = stat = RPC_CANTSEND; 464177633Sdfr goto out; 465177633Sdfr } 466177633Sdfr 467177633Sdfr /* 468177633Sdfr * Check to see if we got an upcall while waiting for the 469177633Sdfr * lock. In both these cases, the request has been removed 470177633Sdfr * from ct->ct_pending. 471177633Sdfr */ 472180025Sdfr if (cr->cr_error) { 473180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 474184588Sdfr errp->re_errno = cr->cr_error; 475184588Sdfr errp->re_status = stat = RPC_CANTRECV; 476177633Sdfr goto out; 477177633Sdfr } 478180025Sdfr if (cr->cr_mrep) { 479180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 480177633Sdfr goto got_reply; 481177633Sdfr } 482177633Sdfr 483177633Sdfr /* 484177633Sdfr * Hack to provide rpc-based message passing 485177633Sdfr */ 486177633Sdfr if (timeout.tv_sec == 0 && timeout.tv_usec == 0) { 487180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 488184588Sdfr errp->re_status = stat = RPC_TIMEDOUT; 489177633Sdfr goto out; 490177633Sdfr } 491177633Sdfr 492180025Sdfr error = msleep(cr, &ct->ct_lock, ct->ct_waitflag, ct->ct_waitchan, 493177633Sdfr tvtohz(&timeout)); 494177633Sdfr 495180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 496180025Sdfr 497177633Sdfr if (error) { 498177633Sdfr /* 499177633Sdfr * The sleep returned an error so our request is still 500177633Sdfr * on the list. Turn the error code into an 501177633Sdfr * appropriate client status. 502177633Sdfr */ 503184588Sdfr errp->re_errno = error; 504177633Sdfr switch (error) { 505177633Sdfr case EINTR: 506195703Skib case ERESTART: 507184588Sdfr stat = RPC_INTR; 508177633Sdfr break; 509177633Sdfr case EWOULDBLOCK: 510184588Sdfr stat = RPC_TIMEDOUT; 511177633Sdfr break; 512177633Sdfr default: 513184588Sdfr stat = RPC_CANTRECV; 514177633Sdfr } 515184588Sdfr errp->re_status = stat; 516177633Sdfr goto out; 517177633Sdfr } else { 518177633Sdfr /* 519177633Sdfr * We were woken up by the upcall. If the 520177633Sdfr * upcall had a receive error, report that, 521177633Sdfr * otherwise we have a reply. 522177633Sdfr */ 523180025Sdfr if (cr->cr_error) { 524184588Sdfr errp->re_errno = cr->cr_error; 525184588Sdfr errp->re_status = stat = RPC_CANTRECV; 526177633Sdfr goto out; 527177633Sdfr } 528177633Sdfr } 529177633Sdfr 530177633Sdfrgot_reply: 531177633Sdfr /* 532177633Sdfr * Now decode and validate the response. We need to drop the 533177633Sdfr * lock since xdr_replymsg may end up sleeping in malloc. 534177633Sdfr */ 535177633Sdfr mtx_unlock(&ct->ct_lock); 536177633Sdfr 537184588Sdfr if (ext && ext->rc_feedback) 538184588Sdfr ext->rc_feedback(FEEDBACK_OK, proc, ext->rc_feedback_arg); 539184588Sdfr 540180025Sdfr xdrmbuf_create(&xdrs, cr->cr_mrep, XDR_DECODE); 541177633Sdfr ok = xdr_replymsg(&xdrs, &reply_msg); 542180025Sdfr cr->cr_mrep = NULL; 543177633Sdfr 544177633Sdfr if (ok) { 545177633Sdfr if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED) && 546184588Sdfr (reply_msg.acpted_rply.ar_stat == SUCCESS)) 547184588Sdfr errp->re_status = stat = RPC_SUCCESS; 548177633Sdfr else 549184588Sdfr stat = _seterr_reply(&reply_msg, errp); 550177633Sdfr 551184588Sdfr if (stat == RPC_SUCCESS) { 552184588Sdfr results = xdrmbuf_getall(&xdrs); 553184588Sdfr if (!AUTH_VALIDATE(auth, xid, 554184588Sdfr &reply_msg.acpted_rply.ar_verf, 555184588Sdfr &results)) { 556184588Sdfr errp->re_status = stat = RPC_AUTHERROR; 557184588Sdfr errp->re_why = AUTH_INVALIDRESP; 558184588Sdfr } else { 559184588Sdfr KASSERT(results, 560184588Sdfr ("auth validated but no result")); 561184588Sdfr *resultsp = results; 562177633Sdfr } 563177633Sdfr } /* end successful completion */ 564177633Sdfr /* 565177633Sdfr * If unsuccesful AND error is an authentication error 566177633Sdfr * then refresh credentials and try again, else break 567177633Sdfr */ 568184588Sdfr else if (stat == RPC_AUTHERROR) 569177633Sdfr /* maybe our credentials need to be refreshed ... */ 570177633Sdfr if (nrefreshes > 0 && 571184588Sdfr AUTH_REFRESH(auth, &reply_msg)) { 572177633Sdfr nrefreshes--; 573184588Sdfr XDR_DESTROY(&xdrs); 574184588Sdfr mtx_lock(&ct->ct_lock); 575177633Sdfr goto call_again; 576177633Sdfr } 577177633Sdfr /* end of unsuccessful completion */ 578177633Sdfr } /* end of valid reply message */ 579177633Sdfr else { 580184588Sdfr errp->re_status = stat = RPC_CANTDECODERES; 581177633Sdfr } 582184588Sdfr XDR_DESTROY(&xdrs); 583184588Sdfr mtx_lock(&ct->ct_lock); 584177633Sdfrout: 585177633Sdfr mtx_assert(&ct->ct_lock, MA_OWNED); 586177633Sdfr 587184588Sdfr KASSERT(stat != RPC_SUCCESS || *resultsp, 588184588Sdfr ("RPC_SUCCESS without reply")); 589184588Sdfr 590177633Sdfr if (mreq) 591177633Sdfr m_freem(mreq); 592180025Sdfr if (cr->cr_mrep) 593180025Sdfr m_freem(cr->cr_mrep); 594177633Sdfr 595180025Sdfr ct->ct_threads--; 596180025Sdfr if (ct->ct_closing) 597180025Sdfr wakeup(ct); 598180025Sdfr 599177633Sdfr mtx_unlock(&ct->ct_lock); 600180025Sdfr 601184588Sdfr if (auth && stat != RPC_SUCCESS) 602184588Sdfr AUTH_VALIDATE(auth, xid, NULL, NULL); 603184588Sdfr 604180025Sdfr free(cr, M_RPC); 605180025Sdfr 606184588Sdfr return (stat); 607177633Sdfr} 608177633Sdfr 609177633Sdfrstatic void 610177633Sdfrclnt_vc_geterr(CLIENT *cl, struct rpc_err *errp) 611177633Sdfr{ 612177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 613177633Sdfr 614177633Sdfr *errp = ct->ct_error; 615177633Sdfr} 616177633Sdfr 617177633Sdfrstatic bool_t 618177633Sdfrclnt_vc_freeres(CLIENT *cl, xdrproc_t xdr_res, void *res_ptr) 619177633Sdfr{ 620177633Sdfr XDR xdrs; 621177633Sdfr bool_t dummy; 622177633Sdfr 623177633Sdfr xdrs.x_op = XDR_FREE; 624177633Sdfr dummy = (*xdr_res)(&xdrs, res_ptr); 625177633Sdfr 626177633Sdfr return (dummy); 627177633Sdfr} 628177633Sdfr 629177633Sdfr/*ARGSUSED*/ 630177633Sdfrstatic void 631177633Sdfrclnt_vc_abort(CLIENT *cl) 632177633Sdfr{ 633177633Sdfr} 634177633Sdfr 635177633Sdfrstatic bool_t 636177633Sdfrclnt_vc_control(CLIENT *cl, u_int request, void *info) 637177633Sdfr{ 638177633Sdfr struct ct_data *ct = (struct ct_data *)cl->cl_private; 639177633Sdfr void *infop = info; 640177633Sdfr 641177633Sdfr mtx_lock(&ct->ct_lock); 642177633Sdfr 643177633Sdfr switch (request) { 644177633Sdfr case CLSET_FD_CLOSE: 645177633Sdfr ct->ct_closeit = TRUE; 646177633Sdfr mtx_unlock(&ct->ct_lock); 647177633Sdfr return (TRUE); 648177633Sdfr case CLSET_FD_NCLOSE: 649177633Sdfr ct->ct_closeit = FALSE; 650177633Sdfr mtx_unlock(&ct->ct_lock); 651177633Sdfr return (TRUE); 652177633Sdfr default: 653177633Sdfr break; 654177633Sdfr } 655177633Sdfr 656177633Sdfr /* for other requests which use info */ 657177633Sdfr if (info == NULL) { 658177633Sdfr mtx_unlock(&ct->ct_lock); 659177633Sdfr return (FALSE); 660177633Sdfr } 661177633Sdfr switch (request) { 662177633Sdfr case CLSET_TIMEOUT: 663177633Sdfr if (time_not_ok((struct timeval *)info)) { 664177633Sdfr mtx_unlock(&ct->ct_lock); 665177633Sdfr return (FALSE); 666177633Sdfr } 667177633Sdfr ct->ct_wait = *(struct timeval *)infop; 668177633Sdfr break; 669177633Sdfr case CLGET_TIMEOUT: 670177633Sdfr *(struct timeval *)infop = ct->ct_wait; 671177633Sdfr break; 672177633Sdfr case CLGET_SERVER_ADDR: 673177633Sdfr (void) memcpy(info, &ct->ct_addr, (size_t)ct->ct_addr.ss_len); 674177633Sdfr break; 675177633Sdfr case CLGET_SVC_ADDR: 676177633Sdfr /* 677177633Sdfr * Slightly different semantics to userland - we use 678177633Sdfr * sockaddr instead of netbuf. 679177633Sdfr */ 680177633Sdfr memcpy(info, &ct->ct_addr, ct->ct_addr.ss_len); 681177633Sdfr break; 682177633Sdfr case CLSET_SVC_ADDR: /* set to new address */ 683177633Sdfr mtx_unlock(&ct->ct_lock); 684177633Sdfr return (FALSE); 685177633Sdfr case CLGET_XID: 686177633Sdfr *(uint32_t *)info = ct->ct_xid; 687177633Sdfr break; 688177633Sdfr case CLSET_XID: 689177633Sdfr /* This will set the xid of the NEXT call */ 690177633Sdfr /* decrement by 1 as clnt_vc_call() increments once */ 691177633Sdfr ct->ct_xid = *(uint32_t *)info - 1; 692177633Sdfr break; 693177633Sdfr case CLGET_VERS: 694177633Sdfr /* 695177633Sdfr * This RELIES on the information that, in the call body, 696177633Sdfr * the version number field is the fifth field from the 697177633Sdfr * begining of the RPC header. MUST be changed if the 698177633Sdfr * call_struct is changed 699177633Sdfr */ 700177633Sdfr *(uint32_t *)info = 701177633Sdfr ntohl(*(uint32_t *)(void *)(ct->ct_mcallc + 702177633Sdfr 4 * BYTES_PER_XDR_UNIT)); 703177633Sdfr break; 704177633Sdfr 705177633Sdfr case CLSET_VERS: 706177633Sdfr *(uint32_t *)(void *)(ct->ct_mcallc + 707177633Sdfr 4 * BYTES_PER_XDR_UNIT) = 708177633Sdfr htonl(*(uint32_t *)info); 709177633Sdfr break; 710177633Sdfr 711177633Sdfr case CLGET_PROG: 712177633Sdfr /* 713177633Sdfr * This RELIES on the information that, in the call body, 714177633Sdfr * the program number field is the fourth field from the 715177633Sdfr * begining of the RPC header. MUST be changed if the 716177633Sdfr * call_struct is changed 717177633Sdfr */ 718177633Sdfr *(uint32_t *)info = 719177633Sdfr ntohl(*(uint32_t *)(void *)(ct->ct_mcallc + 720177633Sdfr 3 * BYTES_PER_XDR_UNIT)); 721177633Sdfr break; 722177633Sdfr 723177633Sdfr case CLSET_PROG: 724177633Sdfr *(uint32_t *)(void *)(ct->ct_mcallc + 725177633Sdfr 3 * BYTES_PER_XDR_UNIT) = 726177633Sdfr htonl(*(uint32_t *)info); 727177633Sdfr break; 728177633Sdfr 729177633Sdfr case CLSET_WAITCHAN: 730184588Sdfr ct->ct_waitchan = (const char *)info; 731177633Sdfr break; 732177633Sdfr 733177633Sdfr case CLGET_WAITCHAN: 734177633Sdfr *(const char **) info = ct->ct_waitchan; 735177633Sdfr break; 736177633Sdfr 737177633Sdfr case CLSET_INTERRUPTIBLE: 738177633Sdfr if (*(int *) info) 739195703Skib ct->ct_waitflag = PCATCH | PBDRY; 740177633Sdfr else 741177633Sdfr ct->ct_waitflag = 0; 742177633Sdfr break; 743177633Sdfr 744177633Sdfr case CLGET_INTERRUPTIBLE: 745177633Sdfr if (ct->ct_waitflag) 746177633Sdfr *(int *) info = TRUE; 747177633Sdfr else 748177633Sdfr *(int *) info = FALSE; 749177633Sdfr break; 750177633Sdfr 751177633Sdfr default: 752177633Sdfr mtx_unlock(&ct->ct_lock); 753177633Sdfr return (FALSE); 754177633Sdfr } 755177633Sdfr 756177633Sdfr mtx_unlock(&ct->ct_lock); 757177633Sdfr return (TRUE); 758177633Sdfr} 759177633Sdfr 760177633Sdfrstatic void 761184588Sdfrclnt_vc_close(CLIENT *cl) 762177633Sdfr{ 763177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 764180025Sdfr struct ct_request *cr; 765177633Sdfr 766177633Sdfr mtx_lock(&ct->ct_lock); 767177633Sdfr 768184588Sdfr if (ct->ct_closed) { 769184588Sdfr mtx_unlock(&ct->ct_lock); 770184588Sdfr return; 771184588Sdfr } 772184588Sdfr 773184588Sdfr if (ct->ct_closing) { 774184588Sdfr while (ct->ct_closing) 775184588Sdfr msleep(ct, &ct->ct_lock, 0, "rpcclose", 0); 776184588Sdfr KASSERT(ct->ct_closed, ("client should be closed")); 777184588Sdfr mtx_unlock(&ct->ct_lock); 778184588Sdfr return; 779184588Sdfr } 780184588Sdfr 781177633Sdfr if (ct->ct_socket) { 782193272Sjhb ct->ct_closing = TRUE; 783193272Sjhb mtx_unlock(&ct->ct_lock); 784193272Sjhb 785177633Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_rcv); 786193272Sjhb soupcall_clear(ct->ct_socket, SO_RCV); 787193437Srmacklem clnt_vc_upcallsdone(ct); 788177633Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_rcv); 789177633Sdfr 790180025Sdfr /* 791180025Sdfr * Abort any pending requests and wait until everyone 792180025Sdfr * has finished with clnt_vc_call. 793180025Sdfr */ 794193272Sjhb mtx_lock(&ct->ct_lock); 795180025Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 796180025Sdfr cr->cr_xid = 0; 797180025Sdfr cr->cr_error = ESHUTDOWN; 798180025Sdfr wakeup(cr); 799180025Sdfr } 800177633Sdfr 801180025Sdfr while (ct->ct_threads) 802180025Sdfr msleep(ct, &ct->ct_lock, 0, "rpcclose", 0); 803184588Sdfr } 804180025Sdfr 805184588Sdfr ct->ct_closing = FALSE; 806184588Sdfr ct->ct_closed = TRUE; 807184588Sdfr mtx_unlock(&ct->ct_lock); 808184588Sdfr wakeup(ct); 809184588Sdfr} 810184588Sdfr 811184588Sdfrstatic void 812184588Sdfrclnt_vc_destroy(CLIENT *cl) 813184588Sdfr{ 814184588Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 815184588Sdfr struct socket *so = NULL; 816184588Sdfr 817184588Sdfr clnt_vc_close(cl); 818184588Sdfr 819184588Sdfr mtx_lock(&ct->ct_lock); 820184588Sdfr 821184588Sdfr if (ct->ct_socket) { 822177633Sdfr if (ct->ct_closeit) { 823177633Sdfr so = ct->ct_socket; 824177633Sdfr } 825177633Sdfr } 826177633Sdfr 827177633Sdfr mtx_unlock(&ct->ct_lock); 828177633Sdfr 829177633Sdfr mtx_destroy(&ct->ct_lock); 830177633Sdfr if (so) { 831177633Sdfr soshutdown(so, SHUT_WR); 832177633Sdfr soclose(so); 833177633Sdfr } 834177633Sdfr mem_free(ct, sizeof(struct ct_data)); 835177633Sdfr mem_free(cl, sizeof(CLIENT)); 836177633Sdfr} 837177633Sdfr 838177633Sdfr/* 839177633Sdfr * Make sure that the time is not garbage. -1 value is disallowed. 840177633Sdfr * Note this is different from time_not_ok in clnt_dg.c 841177633Sdfr */ 842177633Sdfrstatic bool_t 843177633Sdfrtime_not_ok(struct timeval *t) 844177633Sdfr{ 845177633Sdfr return (t->tv_sec <= -1 || t->tv_sec > 100000000 || 846177633Sdfr t->tv_usec <= -1 || t->tv_usec > 1000000); 847177633Sdfr} 848177633Sdfr 849193272Sjhbint 850177633Sdfrclnt_vc_soupcall(struct socket *so, void *arg, int waitflag) 851177633Sdfr{ 852177633Sdfr struct ct_data *ct = (struct ct_data *) arg; 853177633Sdfr struct uio uio; 854177633Sdfr struct mbuf *m; 855177633Sdfr struct ct_request *cr; 856177633Sdfr int error, rcvflag, foundreq; 857177633Sdfr uint32_t xid, header; 858184588Sdfr bool_t do_read; 859177633Sdfr 860193437Srmacklem ct->ct_upcallrefs++; 861177633Sdfr uio.uio_td = curthread; 862177633Sdfr do { 863177633Sdfr /* 864177633Sdfr * If ct_record_resid is zero, we are waiting for a 865177633Sdfr * record mark. 866177633Sdfr */ 867177633Sdfr if (ct->ct_record_resid == 0) { 868177633Sdfr 869177633Sdfr /* 870177633Sdfr * Make sure there is either a whole record 871177633Sdfr * mark in the buffer or there is some other 872177633Sdfr * error condition 873177633Sdfr */ 874177633Sdfr do_read = FALSE; 875177633Sdfr if (so->so_rcv.sb_cc >= sizeof(uint32_t) 876177633Sdfr || (so->so_rcv.sb_state & SBS_CANTRCVMORE) 877177633Sdfr || so->so_error) 878177633Sdfr do_read = TRUE; 879177633Sdfr 880177633Sdfr if (!do_read) 881193437Srmacklem break; 882177633Sdfr 883193272Sjhb SOCKBUF_UNLOCK(&so->so_rcv); 884177633Sdfr uio.uio_resid = sizeof(uint32_t); 885177633Sdfr m = NULL; 886177633Sdfr rcvflag = MSG_DONTWAIT | MSG_SOCALLBCK; 887177633Sdfr error = soreceive(so, NULL, &uio, &m, NULL, &rcvflag); 888193272Sjhb SOCKBUF_LOCK(&so->so_rcv); 889177633Sdfr 890177633Sdfr if (error == EWOULDBLOCK) 891177633Sdfr break; 892177633Sdfr 893177633Sdfr /* 894177633Sdfr * If there was an error, wake up all pending 895177633Sdfr * requests. 896177633Sdfr */ 897177633Sdfr if (error || uio.uio_resid > 0) { 898177633Sdfr wakeup_all: 899177633Sdfr mtx_lock(&ct->ct_lock); 900177633Sdfr if (!error) { 901177633Sdfr /* 902177633Sdfr * We must have got EOF trying 903177633Sdfr * to read from the stream. 904177633Sdfr */ 905177633Sdfr error = ECONNRESET; 906177633Sdfr } 907177633Sdfr ct->ct_error.re_status = RPC_CANTRECV; 908177633Sdfr ct->ct_error.re_errno = error; 909177633Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 910177633Sdfr cr->cr_error = error; 911177633Sdfr wakeup(cr); 912177633Sdfr } 913177633Sdfr mtx_unlock(&ct->ct_lock); 914177633Sdfr break; 915177633Sdfr } 916217242Srmacklem m_copydata(m, 0, sizeof(uint32_t), (char *)&header); 917177633Sdfr header = ntohl(header); 918177633Sdfr ct->ct_record = NULL; 919177633Sdfr ct->ct_record_resid = header & 0x7fffffff; 920177633Sdfr ct->ct_record_eor = ((header & 0x80000000) != 0); 921177633Sdfr m_freem(m); 922177633Sdfr } else { 923177633Sdfr /* 924184588Sdfr * Wait until the socket has the whole record 925184588Sdfr * buffered. 926184588Sdfr */ 927184588Sdfr do_read = FALSE; 928184588Sdfr if (so->so_rcv.sb_cc >= ct->ct_record_resid 929184588Sdfr || (so->so_rcv.sb_state & SBS_CANTRCVMORE) 930184588Sdfr || so->so_error) 931184588Sdfr do_read = TRUE; 932184588Sdfr 933184588Sdfr if (!do_read) 934193437Srmacklem break; 935184588Sdfr 936184588Sdfr /* 937177633Sdfr * We have the record mark. Read as much as 938177633Sdfr * the socket has buffered up to the end of 939177633Sdfr * this record. 940177633Sdfr */ 941193272Sjhb SOCKBUF_UNLOCK(&so->so_rcv); 942177633Sdfr uio.uio_resid = ct->ct_record_resid; 943177633Sdfr m = NULL; 944177633Sdfr rcvflag = MSG_DONTWAIT | MSG_SOCALLBCK; 945177633Sdfr error = soreceive(so, NULL, &uio, &m, NULL, &rcvflag); 946193272Sjhb SOCKBUF_LOCK(&so->so_rcv); 947177633Sdfr 948177633Sdfr if (error == EWOULDBLOCK) 949177633Sdfr break; 950177633Sdfr 951177633Sdfr if (error || uio.uio_resid == ct->ct_record_resid) 952177633Sdfr goto wakeup_all; 953177633Sdfr 954177633Sdfr /* 955177633Sdfr * If we have part of the record already, 956177633Sdfr * chain this bit onto the end. 957177633Sdfr */ 958177633Sdfr if (ct->ct_record) 959177633Sdfr m_last(ct->ct_record)->m_next = m; 960177633Sdfr else 961177633Sdfr ct->ct_record = m; 962177633Sdfr 963177633Sdfr ct->ct_record_resid = uio.uio_resid; 964177633Sdfr 965177633Sdfr /* 966177633Sdfr * If we have the entire record, see if we can 967177633Sdfr * match it to a request. 968177633Sdfr */ 969177633Sdfr if (ct->ct_record_resid == 0 970177633Sdfr && ct->ct_record_eor) { 971177633Sdfr /* 972177633Sdfr * The XID is in the first uint32_t of 973177633Sdfr * the reply. 974177633Sdfr */ 975217242Srmacklem if (ct->ct_record->m_len < sizeof(xid) && 976220585Srmacklem m_length(ct->ct_record, NULL) < 977220585Srmacklem sizeof(xid)) { 978220585Srmacklem m_freem(ct->ct_record); 979177633Sdfr break; 980220585Srmacklem } 981217242Srmacklem m_copydata(ct->ct_record, 0, sizeof(xid), 982217242Srmacklem (char *)&xid); 983177633Sdfr xid = ntohl(xid); 984177633Sdfr 985177633Sdfr mtx_lock(&ct->ct_lock); 986177633Sdfr foundreq = 0; 987177633Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 988177633Sdfr if (cr->cr_xid == xid) { 989177633Sdfr /* 990177633Sdfr * This one 991180025Sdfr * matches. We leave 992180025Sdfr * the reply mbuf in 993177633Sdfr * cr->cr_mrep. Set 994177633Sdfr * the XID to zero so 995180025Sdfr * that we will ignore 996180025Sdfr * any duplicaed 997180025Sdfr * replies. 998177633Sdfr */ 999177633Sdfr cr->cr_xid = 0; 1000177633Sdfr cr->cr_mrep = ct->ct_record; 1001177633Sdfr cr->cr_error = 0; 1002177633Sdfr foundreq = 1; 1003177633Sdfr wakeup(cr); 1004177633Sdfr break; 1005177633Sdfr } 1006177633Sdfr } 1007177633Sdfr mtx_unlock(&ct->ct_lock); 1008177633Sdfr 1009177633Sdfr if (!foundreq) 1010177633Sdfr m_freem(ct->ct_record); 1011177633Sdfr ct->ct_record = NULL; 1012177633Sdfr } 1013177633Sdfr } 1014177633Sdfr } while (m); 1015193437Srmacklem ct->ct_upcallrefs--; 1016193437Srmacklem if (ct->ct_upcallrefs < 0) 1017193437Srmacklem panic("rpcvc upcall refcnt"); 1018193437Srmacklem if (ct->ct_upcallrefs == 0) 1019193437Srmacklem wakeup(&ct->ct_upcallrefs); 1020193272Sjhb return (SU_OK); 1021177633Sdfr} 1022193437Srmacklem 1023193437Srmacklem/* 1024193437Srmacklem * Wait for all upcalls in progress to complete. 1025193437Srmacklem */ 1026193437Srmacklemstatic void 1027193437Srmacklemclnt_vc_upcallsdone(struct ct_data *ct) 1028193437Srmacklem{ 1029193437Srmacklem 1030193437Srmacklem SOCKBUF_LOCK_ASSERT(&ct->ct_socket->so_rcv); 1031193437Srmacklem 1032193437Srmacklem while (ct->ct_upcallrefs > 0) 1033193437Srmacklem (void) msleep(&ct->ct_upcallrefs, 1034193437Srmacklem SOCKBUF_MTX(&ct->ct_socket->so_rcv), 0, "rpcvcup", 0); 1035193437Srmacklem} 1036