clnt_vc.c revision 213756
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 213756 2010-10-13 00:57:14Z 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 CURVNET_SET(so->so_vnet); 224196503Szec if (!__rpc_socket2sockinfo(so, &si)) { 225196503Szec CURVNET_RESTORE(); 226177633Sdfr goto err; 227196503Szec } 228177633Sdfr 229184588Sdfr if (so->so_proto->pr_flags & PR_CONNREQUIRED) { 230184588Sdfr bzero(&sopt, sizeof(sopt)); 231184588Sdfr sopt.sopt_dir = SOPT_SET; 232184588Sdfr sopt.sopt_level = SOL_SOCKET; 233184588Sdfr sopt.sopt_name = SO_KEEPALIVE; 234184588Sdfr sopt.sopt_val = &one; 235184588Sdfr sopt.sopt_valsize = sizeof(one); 236184588Sdfr sosetopt(so, &sopt); 237184588Sdfr } 238184588Sdfr 239184588Sdfr if (so->so_proto->pr_protocol == IPPROTO_TCP) { 240184588Sdfr bzero(&sopt, sizeof(sopt)); 241184588Sdfr sopt.sopt_dir = SOPT_SET; 242184588Sdfr sopt.sopt_level = IPPROTO_TCP; 243184588Sdfr sopt.sopt_name = TCP_NODELAY; 244184588Sdfr sopt.sopt_val = &one; 245184588Sdfr sopt.sopt_valsize = sizeof(one); 246184588Sdfr sosetopt(so, &sopt); 247184588Sdfr } 248196503Szec CURVNET_RESTORE(); 249184588Sdfr 250177633Sdfr ct->ct_closeit = FALSE; 251177633Sdfr 252177633Sdfr /* 253177633Sdfr * Set up private data struct 254177633Sdfr */ 255177633Sdfr ct->ct_socket = so; 256177633Sdfr ct->ct_wait.tv_sec = -1; 257177633Sdfr ct->ct_wait.tv_usec = -1; 258177633Sdfr memcpy(&ct->ct_addr, raddr, raddr->sa_len); 259177633Sdfr 260177633Sdfr /* 261177633Sdfr * Initialize call message 262177633Sdfr */ 263177633Sdfr getmicrotime(&now); 264177633Sdfr ct->ct_xid = ((uint32_t)++disrupt) ^ __RPC_GETXID(&now); 265177633Sdfr call_msg.rm_xid = ct->ct_xid; 266177633Sdfr call_msg.rm_direction = CALL; 267177633Sdfr call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 268177633Sdfr call_msg.rm_call.cb_prog = (uint32_t)prog; 269177633Sdfr call_msg.rm_call.cb_vers = (uint32_t)vers; 270177633Sdfr 271177633Sdfr /* 272177633Sdfr * pre-serialize the static part of the call msg and stash it away 273177633Sdfr */ 274177633Sdfr xdrmem_create(&xdrs, ct->ct_mcallc, MCALL_MSG_SIZE, 275177633Sdfr XDR_ENCODE); 276177633Sdfr if (! xdr_callhdr(&xdrs, &call_msg)) { 277177633Sdfr if (ct->ct_closeit) { 278177633Sdfr soclose(ct->ct_socket); 279177633Sdfr } 280177633Sdfr goto err; 281177633Sdfr } 282177633Sdfr ct->ct_mpos = XDR_GETPOS(&xdrs); 283177633Sdfr XDR_DESTROY(&xdrs); 284177633Sdfr ct->ct_waitchan = "rpcrecv"; 285177633Sdfr ct->ct_waitflag = 0; 286177633Sdfr 287177633Sdfr /* 288177633Sdfr * Create a client handle which uses xdrrec for serialization 289177633Sdfr * and authnone for authentication. 290177633Sdfr */ 291213756Srmacklem sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz); 292213756Srmacklem recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz); 293213756Srmacklem error = soreserve(ct->ct_socket, sendsz, recvsz); 294213756Srmacklem if (error != 0) { 295213756Srmacklem if (ct->ct_closeit) { 296213756Srmacklem soclose(ct->ct_socket); 297213756Srmacklem } 298213756Srmacklem goto err; 299213756Srmacklem } 300180025Sdfr cl->cl_refs = 1; 301177633Sdfr cl->cl_ops = &clnt_vc_ops; 302177633Sdfr cl->cl_private = ct; 303177633Sdfr cl->cl_auth = authnone_create(); 304177633Sdfr 305177633Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_rcv); 306193272Sjhb soupcall_set(ct->ct_socket, SO_RCV, clnt_vc_soupcall, ct); 307177633Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_rcv); 308177633Sdfr 309177633Sdfr ct->ct_record = NULL; 310177633Sdfr ct->ct_record_resid = 0; 311177633Sdfr TAILQ_INIT(&ct->ct_pending); 312177633Sdfr return (cl); 313177633Sdfr 314177633Sdfrerr: 315177633Sdfr if (cl) { 316177633Sdfr if (ct) { 317184877Sdfr mtx_destroy(&ct->ct_lock); 318177633Sdfr mem_free(ct, sizeof (struct ct_data)); 319177633Sdfr } 320177633Sdfr if (cl) 321177633Sdfr mem_free(cl, sizeof (CLIENT)); 322177633Sdfr } 323177633Sdfr return ((CLIENT *)NULL); 324177633Sdfr} 325177633Sdfr 326177633Sdfrstatic enum clnt_stat 327177633Sdfrclnt_vc_call( 328184588Sdfr CLIENT *cl, /* client handle */ 329184588Sdfr struct rpc_callextra *ext, /* call metadata */ 330184588Sdfr rpcproc_t proc, /* procedure number */ 331184588Sdfr struct mbuf *args, /* pointer to args */ 332184588Sdfr struct mbuf **resultsp, /* pointer to results */ 333184588Sdfr struct timeval utimeout) 334177633Sdfr{ 335177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 336180025Sdfr AUTH *auth; 337184588Sdfr struct rpc_err *errp; 338184588Sdfr enum clnt_stat stat; 339177633Sdfr XDR xdrs; 340177633Sdfr struct rpc_msg reply_msg; 341177633Sdfr bool_t ok; 342177633Sdfr int nrefreshes = 2; /* number of times to refresh cred */ 343177633Sdfr struct timeval timeout; 344177633Sdfr uint32_t xid; 345184588Sdfr struct mbuf *mreq = NULL, *results; 346180025Sdfr struct ct_request *cr; 347177633Sdfr int error; 348177633Sdfr 349180025Sdfr cr = malloc(sizeof(struct ct_request), M_RPC, M_WAITOK); 350180025Sdfr 351177633Sdfr mtx_lock(&ct->ct_lock); 352177633Sdfr 353184588Sdfr if (ct->ct_closing || ct->ct_closed) { 354180025Sdfr mtx_unlock(&ct->ct_lock); 355180025Sdfr free(cr, M_RPC); 356180025Sdfr return (RPC_CANTSEND); 357180025Sdfr } 358180025Sdfr ct->ct_threads++; 359177633Sdfr 360184588Sdfr if (ext) { 361180025Sdfr auth = ext->rc_auth; 362184588Sdfr errp = &ext->rc_err; 363184588Sdfr } else { 364180025Sdfr auth = cl->cl_auth; 365184588Sdfr errp = &ct->ct_error; 366184588Sdfr } 367180025Sdfr 368180025Sdfr cr->cr_mrep = NULL; 369180025Sdfr cr->cr_error = 0; 370180025Sdfr 371177633Sdfr if (ct->ct_wait.tv_usec == -1) { 372177633Sdfr timeout = utimeout; /* use supplied timeout */ 373177633Sdfr } else { 374177633Sdfr timeout = ct->ct_wait; /* use default timeout */ 375177633Sdfr } 376177633Sdfr 377177633Sdfrcall_again: 378177633Sdfr mtx_assert(&ct->ct_lock, MA_OWNED); 379177633Sdfr 380177633Sdfr ct->ct_xid++; 381177633Sdfr xid = ct->ct_xid; 382177633Sdfr 383177633Sdfr mtx_unlock(&ct->ct_lock); 384177633Sdfr 385177633Sdfr /* 386177633Sdfr * Leave space to pre-pend the record mark. 387177633Sdfr */ 388177633Sdfr MGETHDR(mreq, M_WAIT, MT_DATA); 389177633Sdfr mreq->m_data += sizeof(uint32_t); 390184588Sdfr KASSERT(ct->ct_mpos + sizeof(uint32_t) <= MHLEN, 391184588Sdfr ("RPC header too big")); 392184588Sdfr bcopy(ct->ct_mcallc, mreq->m_data, ct->ct_mpos); 393184588Sdfr mreq->m_len = ct->ct_mpos; 394177633Sdfr 395177633Sdfr /* 396177633Sdfr * The XID is the first thing in the request. 397177633Sdfr */ 398177633Sdfr *mtod(mreq, uint32_t *) = htonl(xid); 399177633Sdfr 400177633Sdfr xdrmbuf_create(&xdrs, mreq, XDR_ENCODE); 401177633Sdfr 402184588Sdfr errp->re_status = stat = RPC_SUCCESS; 403177633Sdfr 404177633Sdfr if ((! XDR_PUTINT32(&xdrs, &proc)) || 405184588Sdfr (! AUTH_MARSHALL(auth, xid, &xdrs, 406184588Sdfr m_copym(args, 0, M_COPYALL, M_WAITOK)))) { 407184588Sdfr errp->re_status = stat = RPC_CANTENCODEARGS; 408180025Sdfr mtx_lock(&ct->ct_lock); 409180025Sdfr goto out; 410177633Sdfr } 411184588Sdfr mreq->m_pkthdr.len = m_length(mreq, NULL); 412177633Sdfr 413177633Sdfr /* 414177633Sdfr * Prepend a record marker containing the packet length. 415177633Sdfr */ 416177633Sdfr M_PREPEND(mreq, sizeof(uint32_t), M_WAIT); 417177633Sdfr *mtod(mreq, uint32_t *) = 418177633Sdfr htonl(0x80000000 | (mreq->m_pkthdr.len - sizeof(uint32_t))); 419177633Sdfr 420180025Sdfr cr->cr_xid = xid; 421177633Sdfr mtx_lock(&ct->ct_lock); 422199053Srmacklem /* 423199053Srmacklem * Check to see if the other end has already started to close down 424199053Srmacklem * the connection. The upcall will have set ct_error.re_status 425199053Srmacklem * to RPC_CANTRECV if this is the case. 426199053Srmacklem * If the other end starts to close down the connection after this 427199053Srmacklem * point, it will be detected later when cr_error is checked, 428199053Srmacklem * since the request is in the ct_pending queue. 429199053Srmacklem */ 430199053Srmacklem if (ct->ct_error.re_status == RPC_CANTRECV) { 431199053Srmacklem if (errp != &ct->ct_error) { 432199053Srmacklem errp->re_errno = ct->ct_error.re_errno; 433199053Srmacklem errp->re_status = RPC_CANTRECV; 434199053Srmacklem } 435199053Srmacklem stat = RPC_CANTRECV; 436199053Srmacklem goto out; 437199053Srmacklem } 438180025Sdfr TAILQ_INSERT_TAIL(&ct->ct_pending, cr, cr_link); 439177633Sdfr mtx_unlock(&ct->ct_lock); 440177633Sdfr 441177633Sdfr /* 442177633Sdfr * sosend consumes mreq. 443177633Sdfr */ 444177633Sdfr error = sosend(ct->ct_socket, NULL, NULL, mreq, NULL, 0, curthread); 445177633Sdfr mreq = NULL; 446184588Sdfr if (error == EMSGSIZE) { 447184588Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_snd); 448184588Sdfr sbwait(&ct->ct_socket->so_snd); 449184588Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_snd); 450184588Sdfr AUTH_VALIDATE(auth, xid, NULL, NULL); 451184588Sdfr mtx_lock(&ct->ct_lock); 452184588Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 453184588Sdfr goto call_again; 454184588Sdfr } 455177633Sdfr 456184588Sdfr reply_msg.acpted_rply.ar_verf.oa_flavor = AUTH_NULL; 457184588Sdfr reply_msg.acpted_rply.ar_verf.oa_base = cr->cr_verf; 458184588Sdfr reply_msg.acpted_rply.ar_verf.oa_length = 0; 459184588Sdfr reply_msg.acpted_rply.ar_results.where = NULL; 460184588Sdfr reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void; 461177633Sdfr 462177633Sdfr mtx_lock(&ct->ct_lock); 463177633Sdfr if (error) { 464180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 465184588Sdfr errp->re_errno = error; 466184588Sdfr errp->re_status = stat = RPC_CANTSEND; 467177633Sdfr goto out; 468177633Sdfr } 469177633Sdfr 470177633Sdfr /* 471177633Sdfr * Check to see if we got an upcall while waiting for the 472177633Sdfr * lock. In both these cases, the request has been removed 473177633Sdfr * from ct->ct_pending. 474177633Sdfr */ 475180025Sdfr if (cr->cr_error) { 476180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 477184588Sdfr errp->re_errno = cr->cr_error; 478184588Sdfr errp->re_status = stat = RPC_CANTRECV; 479177633Sdfr goto out; 480177633Sdfr } 481180025Sdfr if (cr->cr_mrep) { 482180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 483177633Sdfr goto got_reply; 484177633Sdfr } 485177633Sdfr 486177633Sdfr /* 487177633Sdfr * Hack to provide rpc-based message passing 488177633Sdfr */ 489177633Sdfr if (timeout.tv_sec == 0 && timeout.tv_usec == 0) { 490180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 491184588Sdfr errp->re_status = stat = RPC_TIMEDOUT; 492177633Sdfr goto out; 493177633Sdfr } 494177633Sdfr 495180025Sdfr error = msleep(cr, &ct->ct_lock, ct->ct_waitflag, ct->ct_waitchan, 496177633Sdfr tvtohz(&timeout)); 497177633Sdfr 498180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 499180025Sdfr 500177633Sdfr if (error) { 501177633Sdfr /* 502177633Sdfr * The sleep returned an error so our request is still 503177633Sdfr * on the list. Turn the error code into an 504177633Sdfr * appropriate client status. 505177633Sdfr */ 506184588Sdfr errp->re_errno = error; 507177633Sdfr switch (error) { 508177633Sdfr case EINTR: 509195703Skib case ERESTART: 510184588Sdfr stat = RPC_INTR; 511177633Sdfr break; 512177633Sdfr case EWOULDBLOCK: 513184588Sdfr stat = RPC_TIMEDOUT; 514177633Sdfr break; 515177633Sdfr default: 516184588Sdfr stat = RPC_CANTRECV; 517177633Sdfr } 518184588Sdfr errp->re_status = stat; 519177633Sdfr goto out; 520177633Sdfr } else { 521177633Sdfr /* 522177633Sdfr * We were woken up by the upcall. If the 523177633Sdfr * upcall had a receive error, report that, 524177633Sdfr * otherwise we have a reply. 525177633Sdfr */ 526180025Sdfr if (cr->cr_error) { 527184588Sdfr errp->re_errno = cr->cr_error; 528184588Sdfr errp->re_status = stat = RPC_CANTRECV; 529177633Sdfr goto out; 530177633Sdfr } 531177633Sdfr } 532177633Sdfr 533177633Sdfrgot_reply: 534177633Sdfr /* 535177633Sdfr * Now decode and validate the response. We need to drop the 536177633Sdfr * lock since xdr_replymsg may end up sleeping in malloc. 537177633Sdfr */ 538177633Sdfr mtx_unlock(&ct->ct_lock); 539177633Sdfr 540184588Sdfr if (ext && ext->rc_feedback) 541184588Sdfr ext->rc_feedback(FEEDBACK_OK, proc, ext->rc_feedback_arg); 542184588Sdfr 543180025Sdfr xdrmbuf_create(&xdrs, cr->cr_mrep, XDR_DECODE); 544177633Sdfr ok = xdr_replymsg(&xdrs, &reply_msg); 545180025Sdfr cr->cr_mrep = NULL; 546177633Sdfr 547177633Sdfr if (ok) { 548177633Sdfr if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED) && 549184588Sdfr (reply_msg.acpted_rply.ar_stat == SUCCESS)) 550184588Sdfr errp->re_status = stat = RPC_SUCCESS; 551177633Sdfr else 552184588Sdfr stat = _seterr_reply(&reply_msg, errp); 553177633Sdfr 554184588Sdfr if (stat == RPC_SUCCESS) { 555184588Sdfr results = xdrmbuf_getall(&xdrs); 556184588Sdfr if (!AUTH_VALIDATE(auth, xid, 557184588Sdfr &reply_msg.acpted_rply.ar_verf, 558184588Sdfr &results)) { 559184588Sdfr errp->re_status = stat = RPC_AUTHERROR; 560184588Sdfr errp->re_why = AUTH_INVALIDRESP; 561184588Sdfr } else { 562184588Sdfr KASSERT(results, 563184588Sdfr ("auth validated but no result")); 564184588Sdfr *resultsp = results; 565177633Sdfr } 566177633Sdfr } /* end successful completion */ 567177633Sdfr /* 568177633Sdfr * If unsuccesful AND error is an authentication error 569177633Sdfr * then refresh credentials and try again, else break 570177633Sdfr */ 571184588Sdfr else if (stat == RPC_AUTHERROR) 572177633Sdfr /* maybe our credentials need to be refreshed ... */ 573177633Sdfr if (nrefreshes > 0 && 574184588Sdfr AUTH_REFRESH(auth, &reply_msg)) { 575177633Sdfr nrefreshes--; 576184588Sdfr XDR_DESTROY(&xdrs); 577184588Sdfr mtx_lock(&ct->ct_lock); 578177633Sdfr goto call_again; 579177633Sdfr } 580177633Sdfr /* end of unsuccessful completion */ 581177633Sdfr } /* end of valid reply message */ 582177633Sdfr else { 583184588Sdfr errp->re_status = stat = RPC_CANTDECODERES; 584177633Sdfr } 585184588Sdfr XDR_DESTROY(&xdrs); 586184588Sdfr mtx_lock(&ct->ct_lock); 587177633Sdfrout: 588177633Sdfr mtx_assert(&ct->ct_lock, MA_OWNED); 589177633Sdfr 590184588Sdfr KASSERT(stat != RPC_SUCCESS || *resultsp, 591184588Sdfr ("RPC_SUCCESS without reply")); 592184588Sdfr 593177633Sdfr if (mreq) 594177633Sdfr m_freem(mreq); 595180025Sdfr if (cr->cr_mrep) 596180025Sdfr m_freem(cr->cr_mrep); 597177633Sdfr 598180025Sdfr ct->ct_threads--; 599180025Sdfr if (ct->ct_closing) 600180025Sdfr wakeup(ct); 601180025Sdfr 602177633Sdfr mtx_unlock(&ct->ct_lock); 603180025Sdfr 604184588Sdfr if (auth && stat != RPC_SUCCESS) 605184588Sdfr AUTH_VALIDATE(auth, xid, NULL, NULL); 606184588Sdfr 607180025Sdfr free(cr, M_RPC); 608180025Sdfr 609184588Sdfr return (stat); 610177633Sdfr} 611177633Sdfr 612177633Sdfrstatic void 613177633Sdfrclnt_vc_geterr(CLIENT *cl, struct rpc_err *errp) 614177633Sdfr{ 615177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 616177633Sdfr 617177633Sdfr *errp = ct->ct_error; 618177633Sdfr} 619177633Sdfr 620177633Sdfrstatic bool_t 621177633Sdfrclnt_vc_freeres(CLIENT *cl, xdrproc_t xdr_res, void *res_ptr) 622177633Sdfr{ 623177633Sdfr XDR xdrs; 624177633Sdfr bool_t dummy; 625177633Sdfr 626177633Sdfr xdrs.x_op = XDR_FREE; 627177633Sdfr dummy = (*xdr_res)(&xdrs, res_ptr); 628177633Sdfr 629177633Sdfr return (dummy); 630177633Sdfr} 631177633Sdfr 632177633Sdfr/*ARGSUSED*/ 633177633Sdfrstatic void 634177633Sdfrclnt_vc_abort(CLIENT *cl) 635177633Sdfr{ 636177633Sdfr} 637177633Sdfr 638177633Sdfrstatic bool_t 639177633Sdfrclnt_vc_control(CLIENT *cl, u_int request, void *info) 640177633Sdfr{ 641177633Sdfr struct ct_data *ct = (struct ct_data *)cl->cl_private; 642177633Sdfr void *infop = info; 643177633Sdfr 644177633Sdfr mtx_lock(&ct->ct_lock); 645177633Sdfr 646177633Sdfr switch (request) { 647177633Sdfr case CLSET_FD_CLOSE: 648177633Sdfr ct->ct_closeit = TRUE; 649177633Sdfr mtx_unlock(&ct->ct_lock); 650177633Sdfr return (TRUE); 651177633Sdfr case CLSET_FD_NCLOSE: 652177633Sdfr ct->ct_closeit = FALSE; 653177633Sdfr mtx_unlock(&ct->ct_lock); 654177633Sdfr return (TRUE); 655177633Sdfr default: 656177633Sdfr break; 657177633Sdfr } 658177633Sdfr 659177633Sdfr /* for other requests which use info */ 660177633Sdfr if (info == NULL) { 661177633Sdfr mtx_unlock(&ct->ct_lock); 662177633Sdfr return (FALSE); 663177633Sdfr } 664177633Sdfr switch (request) { 665177633Sdfr case CLSET_TIMEOUT: 666177633Sdfr if (time_not_ok((struct timeval *)info)) { 667177633Sdfr mtx_unlock(&ct->ct_lock); 668177633Sdfr return (FALSE); 669177633Sdfr } 670177633Sdfr ct->ct_wait = *(struct timeval *)infop; 671177633Sdfr break; 672177633Sdfr case CLGET_TIMEOUT: 673177633Sdfr *(struct timeval *)infop = ct->ct_wait; 674177633Sdfr break; 675177633Sdfr case CLGET_SERVER_ADDR: 676177633Sdfr (void) memcpy(info, &ct->ct_addr, (size_t)ct->ct_addr.ss_len); 677177633Sdfr break; 678177633Sdfr case CLGET_SVC_ADDR: 679177633Sdfr /* 680177633Sdfr * Slightly different semantics to userland - we use 681177633Sdfr * sockaddr instead of netbuf. 682177633Sdfr */ 683177633Sdfr memcpy(info, &ct->ct_addr, ct->ct_addr.ss_len); 684177633Sdfr break; 685177633Sdfr case CLSET_SVC_ADDR: /* set to new address */ 686177633Sdfr mtx_unlock(&ct->ct_lock); 687177633Sdfr return (FALSE); 688177633Sdfr case CLGET_XID: 689177633Sdfr *(uint32_t *)info = ct->ct_xid; 690177633Sdfr break; 691177633Sdfr case CLSET_XID: 692177633Sdfr /* This will set the xid of the NEXT call */ 693177633Sdfr /* decrement by 1 as clnt_vc_call() increments once */ 694177633Sdfr ct->ct_xid = *(uint32_t *)info - 1; 695177633Sdfr break; 696177633Sdfr case CLGET_VERS: 697177633Sdfr /* 698177633Sdfr * This RELIES on the information that, in the call body, 699177633Sdfr * the version number field is the fifth field from the 700177633Sdfr * begining of the RPC header. MUST be changed if the 701177633Sdfr * call_struct is changed 702177633Sdfr */ 703177633Sdfr *(uint32_t *)info = 704177633Sdfr ntohl(*(uint32_t *)(void *)(ct->ct_mcallc + 705177633Sdfr 4 * BYTES_PER_XDR_UNIT)); 706177633Sdfr break; 707177633Sdfr 708177633Sdfr case CLSET_VERS: 709177633Sdfr *(uint32_t *)(void *)(ct->ct_mcallc + 710177633Sdfr 4 * BYTES_PER_XDR_UNIT) = 711177633Sdfr htonl(*(uint32_t *)info); 712177633Sdfr break; 713177633Sdfr 714177633Sdfr case CLGET_PROG: 715177633Sdfr /* 716177633Sdfr * This RELIES on the information that, in the call body, 717177633Sdfr * the program number field is the fourth field from the 718177633Sdfr * begining of the RPC header. MUST be changed if the 719177633Sdfr * call_struct is changed 720177633Sdfr */ 721177633Sdfr *(uint32_t *)info = 722177633Sdfr ntohl(*(uint32_t *)(void *)(ct->ct_mcallc + 723177633Sdfr 3 * BYTES_PER_XDR_UNIT)); 724177633Sdfr break; 725177633Sdfr 726177633Sdfr case CLSET_PROG: 727177633Sdfr *(uint32_t *)(void *)(ct->ct_mcallc + 728177633Sdfr 3 * BYTES_PER_XDR_UNIT) = 729177633Sdfr htonl(*(uint32_t *)info); 730177633Sdfr break; 731177633Sdfr 732177633Sdfr case CLSET_WAITCHAN: 733184588Sdfr ct->ct_waitchan = (const char *)info; 734177633Sdfr break; 735177633Sdfr 736177633Sdfr case CLGET_WAITCHAN: 737177633Sdfr *(const char **) info = ct->ct_waitchan; 738177633Sdfr break; 739177633Sdfr 740177633Sdfr case CLSET_INTERRUPTIBLE: 741177633Sdfr if (*(int *) info) 742195703Skib ct->ct_waitflag = PCATCH | PBDRY; 743177633Sdfr else 744177633Sdfr ct->ct_waitflag = 0; 745177633Sdfr break; 746177633Sdfr 747177633Sdfr case CLGET_INTERRUPTIBLE: 748177633Sdfr if (ct->ct_waitflag) 749177633Sdfr *(int *) info = TRUE; 750177633Sdfr else 751177633Sdfr *(int *) info = FALSE; 752177633Sdfr break; 753177633Sdfr 754177633Sdfr default: 755177633Sdfr mtx_unlock(&ct->ct_lock); 756177633Sdfr return (FALSE); 757177633Sdfr } 758177633Sdfr 759177633Sdfr mtx_unlock(&ct->ct_lock); 760177633Sdfr return (TRUE); 761177633Sdfr} 762177633Sdfr 763177633Sdfrstatic void 764184588Sdfrclnt_vc_close(CLIENT *cl) 765177633Sdfr{ 766177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 767180025Sdfr struct ct_request *cr; 768177633Sdfr 769177633Sdfr mtx_lock(&ct->ct_lock); 770177633Sdfr 771184588Sdfr if (ct->ct_closed) { 772184588Sdfr mtx_unlock(&ct->ct_lock); 773184588Sdfr return; 774184588Sdfr } 775184588Sdfr 776184588Sdfr if (ct->ct_closing) { 777184588Sdfr while (ct->ct_closing) 778184588Sdfr msleep(ct, &ct->ct_lock, 0, "rpcclose", 0); 779184588Sdfr KASSERT(ct->ct_closed, ("client should be closed")); 780184588Sdfr mtx_unlock(&ct->ct_lock); 781184588Sdfr return; 782184588Sdfr } 783184588Sdfr 784177633Sdfr if (ct->ct_socket) { 785193272Sjhb ct->ct_closing = TRUE; 786193272Sjhb mtx_unlock(&ct->ct_lock); 787193272Sjhb 788177633Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_rcv); 789193272Sjhb soupcall_clear(ct->ct_socket, SO_RCV); 790193437Srmacklem clnt_vc_upcallsdone(ct); 791177633Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_rcv); 792177633Sdfr 793180025Sdfr /* 794180025Sdfr * Abort any pending requests and wait until everyone 795180025Sdfr * has finished with clnt_vc_call. 796180025Sdfr */ 797193272Sjhb mtx_lock(&ct->ct_lock); 798180025Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 799180025Sdfr cr->cr_xid = 0; 800180025Sdfr cr->cr_error = ESHUTDOWN; 801180025Sdfr wakeup(cr); 802180025Sdfr } 803177633Sdfr 804180025Sdfr while (ct->ct_threads) 805180025Sdfr msleep(ct, &ct->ct_lock, 0, "rpcclose", 0); 806184588Sdfr } 807180025Sdfr 808184588Sdfr ct->ct_closing = FALSE; 809184588Sdfr ct->ct_closed = TRUE; 810184588Sdfr mtx_unlock(&ct->ct_lock); 811184588Sdfr wakeup(ct); 812184588Sdfr} 813184588Sdfr 814184588Sdfrstatic void 815184588Sdfrclnt_vc_destroy(CLIENT *cl) 816184588Sdfr{ 817184588Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 818184588Sdfr struct socket *so = NULL; 819184588Sdfr 820184588Sdfr clnt_vc_close(cl); 821184588Sdfr 822184588Sdfr mtx_lock(&ct->ct_lock); 823184588Sdfr 824184588Sdfr if (ct->ct_socket) { 825177633Sdfr if (ct->ct_closeit) { 826177633Sdfr so = ct->ct_socket; 827177633Sdfr } 828177633Sdfr } 829177633Sdfr 830177633Sdfr mtx_unlock(&ct->ct_lock); 831177633Sdfr 832177633Sdfr mtx_destroy(&ct->ct_lock); 833177633Sdfr if (so) { 834177633Sdfr soshutdown(so, SHUT_WR); 835177633Sdfr soclose(so); 836177633Sdfr } 837177633Sdfr mem_free(ct, sizeof(struct ct_data)); 838177633Sdfr mem_free(cl, sizeof(CLIENT)); 839177633Sdfr} 840177633Sdfr 841177633Sdfr/* 842177633Sdfr * Make sure that the time is not garbage. -1 value is disallowed. 843177633Sdfr * Note this is different from time_not_ok in clnt_dg.c 844177633Sdfr */ 845177633Sdfrstatic bool_t 846177633Sdfrtime_not_ok(struct timeval *t) 847177633Sdfr{ 848177633Sdfr return (t->tv_sec <= -1 || t->tv_sec > 100000000 || 849177633Sdfr t->tv_usec <= -1 || t->tv_usec > 1000000); 850177633Sdfr} 851177633Sdfr 852193272Sjhbint 853177633Sdfrclnt_vc_soupcall(struct socket *so, void *arg, int waitflag) 854177633Sdfr{ 855177633Sdfr struct ct_data *ct = (struct ct_data *) arg; 856177633Sdfr struct uio uio; 857177633Sdfr struct mbuf *m; 858177633Sdfr struct ct_request *cr; 859177633Sdfr int error, rcvflag, foundreq; 860177633Sdfr uint32_t xid, header; 861184588Sdfr bool_t do_read; 862177633Sdfr 863193437Srmacklem ct->ct_upcallrefs++; 864177633Sdfr uio.uio_td = curthread; 865177633Sdfr do { 866177633Sdfr /* 867177633Sdfr * If ct_record_resid is zero, we are waiting for a 868177633Sdfr * record mark. 869177633Sdfr */ 870177633Sdfr if (ct->ct_record_resid == 0) { 871177633Sdfr 872177633Sdfr /* 873177633Sdfr * Make sure there is either a whole record 874177633Sdfr * mark in the buffer or there is some other 875177633Sdfr * error condition 876177633Sdfr */ 877177633Sdfr do_read = FALSE; 878177633Sdfr if (so->so_rcv.sb_cc >= sizeof(uint32_t) 879177633Sdfr || (so->so_rcv.sb_state & SBS_CANTRCVMORE) 880177633Sdfr || so->so_error) 881177633Sdfr do_read = TRUE; 882177633Sdfr 883177633Sdfr if (!do_read) 884193437Srmacklem break; 885177633Sdfr 886193272Sjhb SOCKBUF_UNLOCK(&so->so_rcv); 887177633Sdfr uio.uio_resid = sizeof(uint32_t); 888177633Sdfr m = NULL; 889177633Sdfr rcvflag = MSG_DONTWAIT | MSG_SOCALLBCK; 890177633Sdfr error = soreceive(so, NULL, &uio, &m, NULL, &rcvflag); 891193272Sjhb SOCKBUF_LOCK(&so->so_rcv); 892177633Sdfr 893177633Sdfr if (error == EWOULDBLOCK) 894177633Sdfr break; 895177633Sdfr 896177633Sdfr /* 897177633Sdfr * If there was an error, wake up all pending 898177633Sdfr * requests. 899177633Sdfr */ 900177633Sdfr if (error || uio.uio_resid > 0) { 901177633Sdfr wakeup_all: 902177633Sdfr mtx_lock(&ct->ct_lock); 903177633Sdfr if (!error) { 904177633Sdfr /* 905177633Sdfr * We must have got EOF trying 906177633Sdfr * to read from the stream. 907177633Sdfr */ 908177633Sdfr error = ECONNRESET; 909177633Sdfr } 910177633Sdfr ct->ct_error.re_status = RPC_CANTRECV; 911177633Sdfr ct->ct_error.re_errno = error; 912177633Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 913177633Sdfr cr->cr_error = error; 914177633Sdfr wakeup(cr); 915177633Sdfr } 916177633Sdfr mtx_unlock(&ct->ct_lock); 917177633Sdfr break; 918177633Sdfr } 919184588Sdfr bcopy(mtod(m, uint32_t *), &header, sizeof(uint32_t)); 920177633Sdfr header = ntohl(header); 921177633Sdfr ct->ct_record = NULL; 922177633Sdfr ct->ct_record_resid = header & 0x7fffffff; 923177633Sdfr ct->ct_record_eor = ((header & 0x80000000) != 0); 924177633Sdfr m_freem(m); 925177633Sdfr } else { 926177633Sdfr /* 927184588Sdfr * Wait until the socket has the whole record 928184588Sdfr * buffered. 929184588Sdfr */ 930184588Sdfr do_read = FALSE; 931184588Sdfr if (so->so_rcv.sb_cc >= ct->ct_record_resid 932184588Sdfr || (so->so_rcv.sb_state & SBS_CANTRCVMORE) 933184588Sdfr || so->so_error) 934184588Sdfr do_read = TRUE; 935184588Sdfr 936184588Sdfr if (!do_read) 937193437Srmacklem break; 938184588Sdfr 939184588Sdfr /* 940177633Sdfr * We have the record mark. Read as much as 941177633Sdfr * the socket has buffered up to the end of 942177633Sdfr * this record. 943177633Sdfr */ 944193272Sjhb SOCKBUF_UNLOCK(&so->so_rcv); 945177633Sdfr uio.uio_resid = ct->ct_record_resid; 946177633Sdfr m = NULL; 947177633Sdfr rcvflag = MSG_DONTWAIT | MSG_SOCALLBCK; 948177633Sdfr error = soreceive(so, NULL, &uio, &m, NULL, &rcvflag); 949193272Sjhb SOCKBUF_LOCK(&so->so_rcv); 950177633Sdfr 951177633Sdfr if (error == EWOULDBLOCK) 952177633Sdfr break; 953177633Sdfr 954177633Sdfr if (error || uio.uio_resid == ct->ct_record_resid) 955177633Sdfr goto wakeup_all; 956177633Sdfr 957177633Sdfr /* 958177633Sdfr * If we have part of the record already, 959177633Sdfr * chain this bit onto the end. 960177633Sdfr */ 961177633Sdfr if (ct->ct_record) 962177633Sdfr m_last(ct->ct_record)->m_next = m; 963177633Sdfr else 964177633Sdfr ct->ct_record = m; 965177633Sdfr 966177633Sdfr ct->ct_record_resid = uio.uio_resid; 967177633Sdfr 968177633Sdfr /* 969177633Sdfr * If we have the entire record, see if we can 970177633Sdfr * match it to a request. 971177633Sdfr */ 972177633Sdfr if (ct->ct_record_resid == 0 973177633Sdfr && ct->ct_record_eor) { 974177633Sdfr /* 975177633Sdfr * The XID is in the first uint32_t of 976177633Sdfr * the reply. 977177633Sdfr */ 978184588Sdfr if (ct->ct_record->m_len < sizeof(xid)) 979184588Sdfr ct->ct_record = 980184588Sdfr m_pullup(ct->ct_record, 981184588Sdfr sizeof(xid)); 982177633Sdfr if (!ct->ct_record) 983177633Sdfr break; 984184588Sdfr bcopy(mtod(ct->ct_record, uint32_t *), 985184588Sdfr &xid, sizeof(uint32_t)); 986177633Sdfr xid = ntohl(xid); 987177633Sdfr 988177633Sdfr mtx_lock(&ct->ct_lock); 989177633Sdfr foundreq = 0; 990177633Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 991177633Sdfr if (cr->cr_xid == xid) { 992177633Sdfr /* 993177633Sdfr * This one 994180025Sdfr * matches. We leave 995180025Sdfr * the reply mbuf in 996177633Sdfr * cr->cr_mrep. Set 997177633Sdfr * the XID to zero so 998180025Sdfr * that we will ignore 999180025Sdfr * any duplicaed 1000180025Sdfr * replies. 1001177633Sdfr */ 1002177633Sdfr cr->cr_xid = 0; 1003177633Sdfr cr->cr_mrep = ct->ct_record; 1004177633Sdfr cr->cr_error = 0; 1005177633Sdfr foundreq = 1; 1006177633Sdfr wakeup(cr); 1007177633Sdfr break; 1008177633Sdfr } 1009177633Sdfr } 1010177633Sdfr mtx_unlock(&ct->ct_lock); 1011177633Sdfr 1012177633Sdfr if (!foundreq) 1013177633Sdfr m_freem(ct->ct_record); 1014177633Sdfr ct->ct_record = NULL; 1015177633Sdfr } 1016177633Sdfr } 1017177633Sdfr } while (m); 1018193437Srmacklem ct->ct_upcallrefs--; 1019193437Srmacklem if (ct->ct_upcallrefs < 0) 1020193437Srmacklem panic("rpcvc upcall refcnt"); 1021193437Srmacklem if (ct->ct_upcallrefs == 0) 1022193437Srmacklem wakeup(&ct->ct_upcallrefs); 1023193272Sjhb return (SU_OK); 1024177633Sdfr} 1025193437Srmacklem 1026193437Srmacklem/* 1027193437Srmacklem * Wait for all upcalls in progress to complete. 1028193437Srmacklem */ 1029193437Srmacklemstatic void 1030193437Srmacklemclnt_vc_upcallsdone(struct ct_data *ct) 1031193437Srmacklem{ 1032193437Srmacklem 1033193437Srmacklem SOCKBUF_LOCK_ASSERT(&ct->ct_socket->so_rcv); 1034193437Srmacklem 1035193437Srmacklem while (ct->ct_upcallrefs > 0) 1036193437Srmacklem (void) msleep(&ct->ct_upcallrefs, 1037193437Srmacklem SOCKBUF_MTX(&ct->ct_socket->so_rcv), 0, "rpcvcup", 0); 1038193437Srmacklem} 1039