clnt_vc.c revision 221127
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 221127 2011-04-27 18:19:26Z 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 */ 171221127Srmacklem size_t recvsz, /* buffer send size */ 172221127Srmacklem int intrflag) /* interruptible */ 173177633Sdfr{ 174177633Sdfr CLIENT *cl; /* client handle */ 175177633Sdfr struct ct_data *ct = NULL; /* client handle */ 176177633Sdfr struct timeval now; 177177633Sdfr struct rpc_msg call_msg; 178177633Sdfr static uint32_t disrupt; 179177633Sdfr struct __rpc_sockinfo si; 180177633Sdfr XDR xdrs; 181221127Srmacklem int error, interrupted, one = 1, sleep_flag; 182184588Sdfr struct sockopt sopt; 183177633Sdfr 184177633Sdfr if (disrupt == 0) 185177633Sdfr disrupt = (uint32_t)(long)raddr; 186177633Sdfr 187177633Sdfr cl = (CLIENT *)mem_alloc(sizeof (*cl)); 188177633Sdfr ct = (struct ct_data *)mem_alloc(sizeof (*ct)); 189177633Sdfr 190177633Sdfr mtx_init(&ct->ct_lock, "ct->ct_lock", NULL, MTX_DEF); 191180025Sdfr ct->ct_threads = 0; 192180025Sdfr ct->ct_closing = FALSE; 193184588Sdfr ct->ct_closed = FALSE; 194193437Srmacklem ct->ct_upcallrefs = 0; 195177633Sdfr 196177633Sdfr if ((so->so_state & (SS_ISCONNECTED|SS_ISCONFIRMING)) == 0) { 197177633Sdfr error = soconnect(so, raddr, curthread); 198180025Sdfr SOCK_LOCK(so); 199180025Sdfr interrupted = 0; 200221127Srmacklem sleep_flag = PSOCK; 201221127Srmacklem if (intrflag != 0) 202221127Srmacklem sleep_flag |= (PCATCH | PBDRY); 203180025Sdfr while ((so->so_state & SS_ISCONNECTING) 204180025Sdfr && so->so_error == 0) { 205180025Sdfr error = msleep(&so->so_timeo, SOCK_MTX(so), 206221127Srmacklem sleep_flag, "connec", 0); 207180025Sdfr if (error) { 208180025Sdfr if (error == EINTR || error == ERESTART) 209180025Sdfr interrupted = 1; 210180025Sdfr break; 211180025Sdfr } 212180025Sdfr } 213180025Sdfr if (error == 0) { 214180025Sdfr error = so->so_error; 215180025Sdfr so->so_error = 0; 216180025Sdfr } 217180025Sdfr SOCK_UNLOCK(so); 218177633Sdfr if (error) { 219180025Sdfr if (!interrupted) 220180025Sdfr so->so_state &= ~SS_ISCONNECTING; 221177633Sdfr rpc_createerr.cf_stat = RPC_SYSTEMERROR; 222177633Sdfr rpc_createerr.cf_error.re_errno = error; 223177633Sdfr goto err; 224177633Sdfr } 225177633Sdfr } 226177633Sdfr 227196503Szec if (!__rpc_socket2sockinfo(so, &si)) { 228177633Sdfr goto err; 229196503Szec } 230177633Sdfr 231184588Sdfr if (so->so_proto->pr_flags & PR_CONNREQUIRED) { 232184588Sdfr bzero(&sopt, sizeof(sopt)); 233184588Sdfr sopt.sopt_dir = SOPT_SET; 234184588Sdfr sopt.sopt_level = SOL_SOCKET; 235184588Sdfr sopt.sopt_name = SO_KEEPALIVE; 236184588Sdfr sopt.sopt_val = &one; 237184588Sdfr sopt.sopt_valsize = sizeof(one); 238184588Sdfr sosetopt(so, &sopt); 239184588Sdfr } 240184588Sdfr 241184588Sdfr if (so->so_proto->pr_protocol == IPPROTO_TCP) { 242184588Sdfr bzero(&sopt, sizeof(sopt)); 243184588Sdfr sopt.sopt_dir = SOPT_SET; 244184588Sdfr sopt.sopt_level = IPPROTO_TCP; 245184588Sdfr sopt.sopt_name = TCP_NODELAY; 246184588Sdfr sopt.sopt_val = &one; 247184588Sdfr sopt.sopt_valsize = sizeof(one); 248184588Sdfr sosetopt(so, &sopt); 249184588Sdfr } 250184588Sdfr 251177633Sdfr ct->ct_closeit = FALSE; 252177633Sdfr 253177633Sdfr /* 254177633Sdfr * Set up private data struct 255177633Sdfr */ 256177633Sdfr ct->ct_socket = so; 257177633Sdfr ct->ct_wait.tv_sec = -1; 258177633Sdfr ct->ct_wait.tv_usec = -1; 259177633Sdfr memcpy(&ct->ct_addr, raddr, raddr->sa_len); 260177633Sdfr 261177633Sdfr /* 262177633Sdfr * Initialize call message 263177633Sdfr */ 264177633Sdfr getmicrotime(&now); 265177633Sdfr ct->ct_xid = ((uint32_t)++disrupt) ^ __RPC_GETXID(&now); 266177633Sdfr call_msg.rm_xid = ct->ct_xid; 267177633Sdfr call_msg.rm_direction = CALL; 268177633Sdfr call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 269177633Sdfr call_msg.rm_call.cb_prog = (uint32_t)prog; 270177633Sdfr call_msg.rm_call.cb_vers = (uint32_t)vers; 271177633Sdfr 272177633Sdfr /* 273177633Sdfr * pre-serialize the static part of the call msg and stash it away 274177633Sdfr */ 275177633Sdfr xdrmem_create(&xdrs, ct->ct_mcallc, MCALL_MSG_SIZE, 276177633Sdfr XDR_ENCODE); 277177633Sdfr if (! xdr_callhdr(&xdrs, &call_msg)) { 278177633Sdfr if (ct->ct_closeit) { 279177633Sdfr soclose(ct->ct_socket); 280177633Sdfr } 281177633Sdfr goto err; 282177633Sdfr } 283177633Sdfr ct->ct_mpos = XDR_GETPOS(&xdrs); 284177633Sdfr XDR_DESTROY(&xdrs); 285177633Sdfr ct->ct_waitchan = "rpcrecv"; 286177633Sdfr ct->ct_waitflag = 0; 287177633Sdfr 288177633Sdfr /* 289177633Sdfr * Create a client handle which uses xdrrec for serialization 290177633Sdfr * and authnone for authentication. 291177633Sdfr */ 292213756Srmacklem sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz); 293213756Srmacklem recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz); 294213756Srmacklem error = soreserve(ct->ct_socket, sendsz, recvsz); 295213756Srmacklem if (error != 0) { 296213756Srmacklem if (ct->ct_closeit) { 297213756Srmacklem soclose(ct->ct_socket); 298213756Srmacklem } 299213756Srmacklem goto err; 300213756Srmacklem } 301180025Sdfr cl->cl_refs = 1; 302177633Sdfr cl->cl_ops = &clnt_vc_ops; 303177633Sdfr cl->cl_private = ct; 304177633Sdfr cl->cl_auth = authnone_create(); 305177633Sdfr 306177633Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_rcv); 307193272Sjhb soupcall_set(ct->ct_socket, SO_RCV, clnt_vc_soupcall, ct); 308177633Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_rcv); 309177633Sdfr 310177633Sdfr ct->ct_record = NULL; 311177633Sdfr ct->ct_record_resid = 0; 312177633Sdfr TAILQ_INIT(&ct->ct_pending); 313177633Sdfr return (cl); 314177633Sdfr 315177633Sdfrerr: 316177633Sdfr if (cl) { 317177633Sdfr if (ct) { 318184877Sdfr mtx_destroy(&ct->ct_lock); 319177633Sdfr mem_free(ct, sizeof (struct ct_data)); 320177633Sdfr } 321177633Sdfr if (cl) 322177633Sdfr mem_free(cl, sizeof (CLIENT)); 323177633Sdfr } 324177633Sdfr return ((CLIENT *)NULL); 325177633Sdfr} 326177633Sdfr 327177633Sdfrstatic enum clnt_stat 328177633Sdfrclnt_vc_call( 329184588Sdfr CLIENT *cl, /* client handle */ 330184588Sdfr struct rpc_callextra *ext, /* call metadata */ 331184588Sdfr rpcproc_t proc, /* procedure number */ 332184588Sdfr struct mbuf *args, /* pointer to args */ 333184588Sdfr struct mbuf **resultsp, /* pointer to results */ 334184588Sdfr struct timeval utimeout) 335177633Sdfr{ 336177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 337180025Sdfr AUTH *auth; 338184588Sdfr struct rpc_err *errp; 339184588Sdfr enum clnt_stat stat; 340177633Sdfr XDR xdrs; 341177633Sdfr struct rpc_msg reply_msg; 342177633Sdfr bool_t ok; 343177633Sdfr int nrefreshes = 2; /* number of times to refresh cred */ 344177633Sdfr struct timeval timeout; 345177633Sdfr uint32_t xid; 346184588Sdfr struct mbuf *mreq = NULL, *results; 347180025Sdfr struct ct_request *cr; 348177633Sdfr int error; 349177633Sdfr 350180025Sdfr cr = malloc(sizeof(struct ct_request), M_RPC, M_WAITOK); 351180025Sdfr 352177633Sdfr mtx_lock(&ct->ct_lock); 353177633Sdfr 354184588Sdfr if (ct->ct_closing || ct->ct_closed) { 355180025Sdfr mtx_unlock(&ct->ct_lock); 356180025Sdfr free(cr, M_RPC); 357180025Sdfr return (RPC_CANTSEND); 358180025Sdfr } 359180025Sdfr ct->ct_threads++; 360177633Sdfr 361184588Sdfr if (ext) { 362180025Sdfr auth = ext->rc_auth; 363184588Sdfr errp = &ext->rc_err; 364184588Sdfr } else { 365180025Sdfr auth = cl->cl_auth; 366184588Sdfr errp = &ct->ct_error; 367184588Sdfr } 368180025Sdfr 369180025Sdfr cr->cr_mrep = NULL; 370180025Sdfr cr->cr_error = 0; 371180025Sdfr 372177633Sdfr if (ct->ct_wait.tv_usec == -1) { 373177633Sdfr timeout = utimeout; /* use supplied timeout */ 374177633Sdfr } else { 375177633Sdfr timeout = ct->ct_wait; /* use default timeout */ 376177633Sdfr } 377177633Sdfr 378177633Sdfrcall_again: 379177633Sdfr mtx_assert(&ct->ct_lock, MA_OWNED); 380177633Sdfr 381177633Sdfr ct->ct_xid++; 382177633Sdfr xid = ct->ct_xid; 383177633Sdfr 384177633Sdfr mtx_unlock(&ct->ct_lock); 385177633Sdfr 386177633Sdfr /* 387177633Sdfr * Leave space to pre-pend the record mark. 388177633Sdfr */ 389177633Sdfr MGETHDR(mreq, M_WAIT, MT_DATA); 390177633Sdfr mreq->m_data += sizeof(uint32_t); 391184588Sdfr KASSERT(ct->ct_mpos + sizeof(uint32_t) <= MHLEN, 392184588Sdfr ("RPC header too big")); 393184588Sdfr bcopy(ct->ct_mcallc, mreq->m_data, ct->ct_mpos); 394184588Sdfr mreq->m_len = ct->ct_mpos; 395177633Sdfr 396177633Sdfr /* 397177633Sdfr * The XID is the first thing in the request. 398177633Sdfr */ 399177633Sdfr *mtod(mreq, uint32_t *) = htonl(xid); 400177633Sdfr 401177633Sdfr xdrmbuf_create(&xdrs, mreq, XDR_ENCODE); 402177633Sdfr 403184588Sdfr errp->re_status = stat = RPC_SUCCESS; 404177633Sdfr 405177633Sdfr if ((! XDR_PUTINT32(&xdrs, &proc)) || 406184588Sdfr (! AUTH_MARSHALL(auth, xid, &xdrs, 407184588Sdfr m_copym(args, 0, M_COPYALL, M_WAITOK)))) { 408184588Sdfr errp->re_status = stat = RPC_CANTENCODEARGS; 409180025Sdfr mtx_lock(&ct->ct_lock); 410180025Sdfr goto out; 411177633Sdfr } 412184588Sdfr mreq->m_pkthdr.len = m_length(mreq, NULL); 413177633Sdfr 414177633Sdfr /* 415177633Sdfr * Prepend a record marker containing the packet length. 416177633Sdfr */ 417177633Sdfr M_PREPEND(mreq, sizeof(uint32_t), M_WAIT); 418177633Sdfr *mtod(mreq, uint32_t *) = 419177633Sdfr htonl(0x80000000 | (mreq->m_pkthdr.len - sizeof(uint32_t))); 420177633Sdfr 421180025Sdfr cr->cr_xid = xid; 422177633Sdfr mtx_lock(&ct->ct_lock); 423199053Srmacklem /* 424199053Srmacklem * Check to see if the other end has already started to close down 425199053Srmacklem * the connection. The upcall will have set ct_error.re_status 426199053Srmacklem * to RPC_CANTRECV if this is the case. 427199053Srmacklem * If the other end starts to close down the connection after this 428199053Srmacklem * point, it will be detected later when cr_error is checked, 429199053Srmacklem * since the request is in the ct_pending queue. 430199053Srmacklem */ 431199053Srmacklem if (ct->ct_error.re_status == RPC_CANTRECV) { 432199053Srmacklem if (errp != &ct->ct_error) { 433199053Srmacklem errp->re_errno = ct->ct_error.re_errno; 434199053Srmacklem errp->re_status = RPC_CANTRECV; 435199053Srmacklem } 436199053Srmacklem stat = RPC_CANTRECV; 437199053Srmacklem goto out; 438199053Srmacklem } 439180025Sdfr TAILQ_INSERT_TAIL(&ct->ct_pending, cr, cr_link); 440177633Sdfr mtx_unlock(&ct->ct_lock); 441177633Sdfr 442177633Sdfr /* 443177633Sdfr * sosend consumes mreq. 444177633Sdfr */ 445177633Sdfr error = sosend(ct->ct_socket, NULL, NULL, mreq, NULL, 0, curthread); 446177633Sdfr mreq = NULL; 447184588Sdfr if (error == EMSGSIZE) { 448184588Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_snd); 449184588Sdfr sbwait(&ct->ct_socket->so_snd); 450184588Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_snd); 451184588Sdfr AUTH_VALIDATE(auth, xid, NULL, NULL); 452184588Sdfr mtx_lock(&ct->ct_lock); 453184588Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 454184588Sdfr goto call_again; 455184588Sdfr } 456177633Sdfr 457184588Sdfr reply_msg.acpted_rply.ar_verf.oa_flavor = AUTH_NULL; 458184588Sdfr reply_msg.acpted_rply.ar_verf.oa_base = cr->cr_verf; 459184588Sdfr reply_msg.acpted_rply.ar_verf.oa_length = 0; 460184588Sdfr reply_msg.acpted_rply.ar_results.where = NULL; 461184588Sdfr reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void; 462177633Sdfr 463177633Sdfr mtx_lock(&ct->ct_lock); 464177633Sdfr if (error) { 465180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 466184588Sdfr errp->re_errno = error; 467184588Sdfr errp->re_status = stat = RPC_CANTSEND; 468177633Sdfr goto out; 469177633Sdfr } 470177633Sdfr 471177633Sdfr /* 472177633Sdfr * Check to see if we got an upcall while waiting for the 473177633Sdfr * lock. In both these cases, the request has been removed 474177633Sdfr * from ct->ct_pending. 475177633Sdfr */ 476180025Sdfr if (cr->cr_error) { 477180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 478184588Sdfr errp->re_errno = cr->cr_error; 479184588Sdfr errp->re_status = stat = RPC_CANTRECV; 480177633Sdfr goto out; 481177633Sdfr } 482180025Sdfr if (cr->cr_mrep) { 483180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 484177633Sdfr goto got_reply; 485177633Sdfr } 486177633Sdfr 487177633Sdfr /* 488177633Sdfr * Hack to provide rpc-based message passing 489177633Sdfr */ 490177633Sdfr if (timeout.tv_sec == 0 && timeout.tv_usec == 0) { 491180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 492184588Sdfr errp->re_status = stat = RPC_TIMEDOUT; 493177633Sdfr goto out; 494177633Sdfr } 495177633Sdfr 496180025Sdfr error = msleep(cr, &ct->ct_lock, ct->ct_waitflag, ct->ct_waitchan, 497177633Sdfr tvtohz(&timeout)); 498177633Sdfr 499180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 500180025Sdfr 501177633Sdfr if (error) { 502177633Sdfr /* 503177633Sdfr * The sleep returned an error so our request is still 504177633Sdfr * on the list. Turn the error code into an 505177633Sdfr * appropriate client status. 506177633Sdfr */ 507184588Sdfr errp->re_errno = error; 508177633Sdfr switch (error) { 509177633Sdfr case EINTR: 510195703Skib case ERESTART: 511184588Sdfr stat = RPC_INTR; 512177633Sdfr break; 513177633Sdfr case EWOULDBLOCK: 514184588Sdfr stat = RPC_TIMEDOUT; 515177633Sdfr break; 516177633Sdfr default: 517184588Sdfr stat = RPC_CANTRECV; 518177633Sdfr } 519184588Sdfr errp->re_status = stat; 520177633Sdfr goto out; 521177633Sdfr } else { 522177633Sdfr /* 523177633Sdfr * We were woken up by the upcall. If the 524177633Sdfr * upcall had a receive error, report that, 525177633Sdfr * otherwise we have a reply. 526177633Sdfr */ 527180025Sdfr if (cr->cr_error) { 528184588Sdfr errp->re_errno = cr->cr_error; 529184588Sdfr errp->re_status = stat = RPC_CANTRECV; 530177633Sdfr goto out; 531177633Sdfr } 532177633Sdfr } 533177633Sdfr 534177633Sdfrgot_reply: 535177633Sdfr /* 536177633Sdfr * Now decode and validate the response. We need to drop the 537177633Sdfr * lock since xdr_replymsg may end up sleeping in malloc. 538177633Sdfr */ 539177633Sdfr mtx_unlock(&ct->ct_lock); 540177633Sdfr 541184588Sdfr if (ext && ext->rc_feedback) 542184588Sdfr ext->rc_feedback(FEEDBACK_OK, proc, ext->rc_feedback_arg); 543184588Sdfr 544180025Sdfr xdrmbuf_create(&xdrs, cr->cr_mrep, XDR_DECODE); 545177633Sdfr ok = xdr_replymsg(&xdrs, &reply_msg); 546180025Sdfr cr->cr_mrep = NULL; 547177633Sdfr 548177633Sdfr if (ok) { 549177633Sdfr if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED) && 550184588Sdfr (reply_msg.acpted_rply.ar_stat == SUCCESS)) 551184588Sdfr errp->re_status = stat = RPC_SUCCESS; 552177633Sdfr else 553184588Sdfr stat = _seterr_reply(&reply_msg, errp); 554177633Sdfr 555184588Sdfr if (stat == RPC_SUCCESS) { 556184588Sdfr results = xdrmbuf_getall(&xdrs); 557184588Sdfr if (!AUTH_VALIDATE(auth, xid, 558184588Sdfr &reply_msg.acpted_rply.ar_verf, 559184588Sdfr &results)) { 560184588Sdfr errp->re_status = stat = RPC_AUTHERROR; 561184588Sdfr errp->re_why = AUTH_INVALIDRESP; 562184588Sdfr } else { 563184588Sdfr KASSERT(results, 564184588Sdfr ("auth validated but no result")); 565184588Sdfr *resultsp = results; 566177633Sdfr } 567177633Sdfr } /* end successful completion */ 568177633Sdfr /* 569177633Sdfr * If unsuccesful AND error is an authentication error 570177633Sdfr * then refresh credentials and try again, else break 571177633Sdfr */ 572184588Sdfr else if (stat == RPC_AUTHERROR) 573177633Sdfr /* maybe our credentials need to be refreshed ... */ 574177633Sdfr if (nrefreshes > 0 && 575184588Sdfr AUTH_REFRESH(auth, &reply_msg)) { 576177633Sdfr nrefreshes--; 577184588Sdfr XDR_DESTROY(&xdrs); 578184588Sdfr mtx_lock(&ct->ct_lock); 579177633Sdfr goto call_again; 580177633Sdfr } 581177633Sdfr /* end of unsuccessful completion */ 582177633Sdfr } /* end of valid reply message */ 583177633Sdfr else { 584184588Sdfr errp->re_status = stat = RPC_CANTDECODERES; 585177633Sdfr } 586184588Sdfr XDR_DESTROY(&xdrs); 587184588Sdfr mtx_lock(&ct->ct_lock); 588177633Sdfrout: 589177633Sdfr mtx_assert(&ct->ct_lock, MA_OWNED); 590177633Sdfr 591184588Sdfr KASSERT(stat != RPC_SUCCESS || *resultsp, 592184588Sdfr ("RPC_SUCCESS without reply")); 593184588Sdfr 594177633Sdfr if (mreq) 595177633Sdfr m_freem(mreq); 596180025Sdfr if (cr->cr_mrep) 597180025Sdfr m_freem(cr->cr_mrep); 598177633Sdfr 599180025Sdfr ct->ct_threads--; 600180025Sdfr if (ct->ct_closing) 601180025Sdfr wakeup(ct); 602180025Sdfr 603177633Sdfr mtx_unlock(&ct->ct_lock); 604180025Sdfr 605184588Sdfr if (auth && stat != RPC_SUCCESS) 606184588Sdfr AUTH_VALIDATE(auth, xid, NULL, NULL); 607184588Sdfr 608180025Sdfr free(cr, M_RPC); 609180025Sdfr 610184588Sdfr return (stat); 611177633Sdfr} 612177633Sdfr 613177633Sdfrstatic void 614177633Sdfrclnt_vc_geterr(CLIENT *cl, struct rpc_err *errp) 615177633Sdfr{ 616177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 617177633Sdfr 618177633Sdfr *errp = ct->ct_error; 619177633Sdfr} 620177633Sdfr 621177633Sdfrstatic bool_t 622177633Sdfrclnt_vc_freeres(CLIENT *cl, xdrproc_t xdr_res, void *res_ptr) 623177633Sdfr{ 624177633Sdfr XDR xdrs; 625177633Sdfr bool_t dummy; 626177633Sdfr 627177633Sdfr xdrs.x_op = XDR_FREE; 628177633Sdfr dummy = (*xdr_res)(&xdrs, res_ptr); 629177633Sdfr 630177633Sdfr return (dummy); 631177633Sdfr} 632177633Sdfr 633177633Sdfr/*ARGSUSED*/ 634177633Sdfrstatic void 635177633Sdfrclnt_vc_abort(CLIENT *cl) 636177633Sdfr{ 637177633Sdfr} 638177633Sdfr 639177633Sdfrstatic bool_t 640177633Sdfrclnt_vc_control(CLIENT *cl, u_int request, void *info) 641177633Sdfr{ 642177633Sdfr struct ct_data *ct = (struct ct_data *)cl->cl_private; 643177633Sdfr void *infop = info; 644177633Sdfr 645177633Sdfr mtx_lock(&ct->ct_lock); 646177633Sdfr 647177633Sdfr switch (request) { 648177633Sdfr case CLSET_FD_CLOSE: 649177633Sdfr ct->ct_closeit = TRUE; 650177633Sdfr mtx_unlock(&ct->ct_lock); 651177633Sdfr return (TRUE); 652177633Sdfr case CLSET_FD_NCLOSE: 653177633Sdfr ct->ct_closeit = FALSE; 654177633Sdfr mtx_unlock(&ct->ct_lock); 655177633Sdfr return (TRUE); 656177633Sdfr default: 657177633Sdfr break; 658177633Sdfr } 659177633Sdfr 660177633Sdfr /* for other requests which use info */ 661177633Sdfr if (info == NULL) { 662177633Sdfr mtx_unlock(&ct->ct_lock); 663177633Sdfr return (FALSE); 664177633Sdfr } 665177633Sdfr switch (request) { 666177633Sdfr case CLSET_TIMEOUT: 667177633Sdfr if (time_not_ok((struct timeval *)info)) { 668177633Sdfr mtx_unlock(&ct->ct_lock); 669177633Sdfr return (FALSE); 670177633Sdfr } 671177633Sdfr ct->ct_wait = *(struct timeval *)infop; 672177633Sdfr break; 673177633Sdfr case CLGET_TIMEOUT: 674177633Sdfr *(struct timeval *)infop = ct->ct_wait; 675177633Sdfr break; 676177633Sdfr case CLGET_SERVER_ADDR: 677177633Sdfr (void) memcpy(info, &ct->ct_addr, (size_t)ct->ct_addr.ss_len); 678177633Sdfr break; 679177633Sdfr case CLGET_SVC_ADDR: 680177633Sdfr /* 681177633Sdfr * Slightly different semantics to userland - we use 682177633Sdfr * sockaddr instead of netbuf. 683177633Sdfr */ 684177633Sdfr memcpy(info, &ct->ct_addr, ct->ct_addr.ss_len); 685177633Sdfr break; 686177633Sdfr case CLSET_SVC_ADDR: /* set to new address */ 687177633Sdfr mtx_unlock(&ct->ct_lock); 688177633Sdfr return (FALSE); 689177633Sdfr case CLGET_XID: 690177633Sdfr *(uint32_t *)info = ct->ct_xid; 691177633Sdfr break; 692177633Sdfr case CLSET_XID: 693177633Sdfr /* This will set the xid of the NEXT call */ 694177633Sdfr /* decrement by 1 as clnt_vc_call() increments once */ 695177633Sdfr ct->ct_xid = *(uint32_t *)info - 1; 696177633Sdfr break; 697177633Sdfr case CLGET_VERS: 698177633Sdfr /* 699177633Sdfr * This RELIES on the information that, in the call body, 700177633Sdfr * the version number field is the fifth field from the 701177633Sdfr * begining of the RPC header. MUST be changed if the 702177633Sdfr * call_struct is changed 703177633Sdfr */ 704177633Sdfr *(uint32_t *)info = 705177633Sdfr ntohl(*(uint32_t *)(void *)(ct->ct_mcallc + 706177633Sdfr 4 * BYTES_PER_XDR_UNIT)); 707177633Sdfr break; 708177633Sdfr 709177633Sdfr case CLSET_VERS: 710177633Sdfr *(uint32_t *)(void *)(ct->ct_mcallc + 711177633Sdfr 4 * BYTES_PER_XDR_UNIT) = 712177633Sdfr htonl(*(uint32_t *)info); 713177633Sdfr break; 714177633Sdfr 715177633Sdfr case CLGET_PROG: 716177633Sdfr /* 717177633Sdfr * This RELIES on the information that, in the call body, 718177633Sdfr * the program number field is the fourth field from the 719177633Sdfr * begining of the RPC header. MUST be changed if the 720177633Sdfr * call_struct is changed 721177633Sdfr */ 722177633Sdfr *(uint32_t *)info = 723177633Sdfr ntohl(*(uint32_t *)(void *)(ct->ct_mcallc + 724177633Sdfr 3 * BYTES_PER_XDR_UNIT)); 725177633Sdfr break; 726177633Sdfr 727177633Sdfr case CLSET_PROG: 728177633Sdfr *(uint32_t *)(void *)(ct->ct_mcallc + 729177633Sdfr 3 * BYTES_PER_XDR_UNIT) = 730177633Sdfr htonl(*(uint32_t *)info); 731177633Sdfr break; 732177633Sdfr 733177633Sdfr case CLSET_WAITCHAN: 734184588Sdfr ct->ct_waitchan = (const char *)info; 735177633Sdfr break; 736177633Sdfr 737177633Sdfr case CLGET_WAITCHAN: 738177633Sdfr *(const char **) info = ct->ct_waitchan; 739177633Sdfr break; 740177633Sdfr 741177633Sdfr case CLSET_INTERRUPTIBLE: 742177633Sdfr if (*(int *) info) 743195703Skib ct->ct_waitflag = PCATCH | PBDRY; 744177633Sdfr else 745177633Sdfr ct->ct_waitflag = 0; 746177633Sdfr break; 747177633Sdfr 748177633Sdfr case CLGET_INTERRUPTIBLE: 749177633Sdfr if (ct->ct_waitflag) 750177633Sdfr *(int *) info = TRUE; 751177633Sdfr else 752177633Sdfr *(int *) info = FALSE; 753177633Sdfr break; 754177633Sdfr 755177633Sdfr default: 756177633Sdfr mtx_unlock(&ct->ct_lock); 757177633Sdfr return (FALSE); 758177633Sdfr } 759177633Sdfr 760177633Sdfr mtx_unlock(&ct->ct_lock); 761177633Sdfr return (TRUE); 762177633Sdfr} 763177633Sdfr 764177633Sdfrstatic void 765184588Sdfrclnt_vc_close(CLIENT *cl) 766177633Sdfr{ 767177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 768180025Sdfr struct ct_request *cr; 769177633Sdfr 770177633Sdfr mtx_lock(&ct->ct_lock); 771177633Sdfr 772184588Sdfr if (ct->ct_closed) { 773184588Sdfr mtx_unlock(&ct->ct_lock); 774184588Sdfr return; 775184588Sdfr } 776184588Sdfr 777184588Sdfr if (ct->ct_closing) { 778184588Sdfr while (ct->ct_closing) 779184588Sdfr msleep(ct, &ct->ct_lock, 0, "rpcclose", 0); 780184588Sdfr KASSERT(ct->ct_closed, ("client should be closed")); 781184588Sdfr mtx_unlock(&ct->ct_lock); 782184588Sdfr return; 783184588Sdfr } 784184588Sdfr 785177633Sdfr if (ct->ct_socket) { 786193272Sjhb ct->ct_closing = TRUE; 787193272Sjhb mtx_unlock(&ct->ct_lock); 788193272Sjhb 789177633Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_rcv); 790193272Sjhb soupcall_clear(ct->ct_socket, SO_RCV); 791193437Srmacklem clnt_vc_upcallsdone(ct); 792177633Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_rcv); 793177633Sdfr 794180025Sdfr /* 795180025Sdfr * Abort any pending requests and wait until everyone 796180025Sdfr * has finished with clnt_vc_call. 797180025Sdfr */ 798193272Sjhb mtx_lock(&ct->ct_lock); 799180025Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 800180025Sdfr cr->cr_xid = 0; 801180025Sdfr cr->cr_error = ESHUTDOWN; 802180025Sdfr wakeup(cr); 803180025Sdfr } 804177633Sdfr 805180025Sdfr while (ct->ct_threads) 806180025Sdfr msleep(ct, &ct->ct_lock, 0, "rpcclose", 0); 807184588Sdfr } 808180025Sdfr 809184588Sdfr ct->ct_closing = FALSE; 810184588Sdfr ct->ct_closed = TRUE; 811184588Sdfr mtx_unlock(&ct->ct_lock); 812184588Sdfr wakeup(ct); 813184588Sdfr} 814184588Sdfr 815184588Sdfrstatic void 816184588Sdfrclnt_vc_destroy(CLIENT *cl) 817184588Sdfr{ 818184588Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 819184588Sdfr struct socket *so = NULL; 820184588Sdfr 821184588Sdfr clnt_vc_close(cl); 822184588Sdfr 823184588Sdfr mtx_lock(&ct->ct_lock); 824184588Sdfr 825184588Sdfr if (ct->ct_socket) { 826177633Sdfr if (ct->ct_closeit) { 827177633Sdfr so = ct->ct_socket; 828177633Sdfr } 829177633Sdfr } 830177633Sdfr 831177633Sdfr mtx_unlock(&ct->ct_lock); 832177633Sdfr 833177633Sdfr mtx_destroy(&ct->ct_lock); 834177633Sdfr if (so) { 835177633Sdfr soshutdown(so, SHUT_WR); 836177633Sdfr soclose(so); 837177633Sdfr } 838177633Sdfr mem_free(ct, sizeof(struct ct_data)); 839177633Sdfr mem_free(cl, sizeof(CLIENT)); 840177633Sdfr} 841177633Sdfr 842177633Sdfr/* 843177633Sdfr * Make sure that the time is not garbage. -1 value is disallowed. 844177633Sdfr * Note this is different from time_not_ok in clnt_dg.c 845177633Sdfr */ 846177633Sdfrstatic bool_t 847177633Sdfrtime_not_ok(struct timeval *t) 848177633Sdfr{ 849177633Sdfr return (t->tv_sec <= -1 || t->tv_sec > 100000000 || 850177633Sdfr t->tv_usec <= -1 || t->tv_usec > 1000000); 851177633Sdfr} 852177633Sdfr 853193272Sjhbint 854177633Sdfrclnt_vc_soupcall(struct socket *so, void *arg, int waitflag) 855177633Sdfr{ 856177633Sdfr struct ct_data *ct = (struct ct_data *) arg; 857177633Sdfr struct uio uio; 858177633Sdfr struct mbuf *m; 859177633Sdfr struct ct_request *cr; 860177633Sdfr int error, rcvflag, foundreq; 861177633Sdfr uint32_t xid, header; 862184588Sdfr bool_t do_read; 863177633Sdfr 864193437Srmacklem ct->ct_upcallrefs++; 865177633Sdfr uio.uio_td = curthread; 866177633Sdfr do { 867177633Sdfr /* 868177633Sdfr * If ct_record_resid is zero, we are waiting for a 869177633Sdfr * record mark. 870177633Sdfr */ 871177633Sdfr if (ct->ct_record_resid == 0) { 872177633Sdfr 873177633Sdfr /* 874177633Sdfr * Make sure there is either a whole record 875177633Sdfr * mark in the buffer or there is some other 876177633Sdfr * error condition 877177633Sdfr */ 878177633Sdfr do_read = FALSE; 879177633Sdfr if (so->so_rcv.sb_cc >= sizeof(uint32_t) 880177633Sdfr || (so->so_rcv.sb_state & SBS_CANTRCVMORE) 881177633Sdfr || so->so_error) 882177633Sdfr do_read = TRUE; 883177633Sdfr 884177633Sdfr if (!do_read) 885193437Srmacklem break; 886177633Sdfr 887193272Sjhb SOCKBUF_UNLOCK(&so->so_rcv); 888177633Sdfr uio.uio_resid = sizeof(uint32_t); 889177633Sdfr m = NULL; 890177633Sdfr rcvflag = MSG_DONTWAIT | MSG_SOCALLBCK; 891177633Sdfr error = soreceive(so, NULL, &uio, &m, NULL, &rcvflag); 892193272Sjhb SOCKBUF_LOCK(&so->so_rcv); 893177633Sdfr 894177633Sdfr if (error == EWOULDBLOCK) 895177633Sdfr break; 896177633Sdfr 897177633Sdfr /* 898177633Sdfr * If there was an error, wake up all pending 899177633Sdfr * requests. 900177633Sdfr */ 901177633Sdfr if (error || uio.uio_resid > 0) { 902177633Sdfr wakeup_all: 903177633Sdfr mtx_lock(&ct->ct_lock); 904177633Sdfr if (!error) { 905177633Sdfr /* 906177633Sdfr * We must have got EOF trying 907177633Sdfr * to read from the stream. 908177633Sdfr */ 909177633Sdfr error = ECONNRESET; 910177633Sdfr } 911177633Sdfr ct->ct_error.re_status = RPC_CANTRECV; 912177633Sdfr ct->ct_error.re_errno = error; 913177633Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 914177633Sdfr cr->cr_error = error; 915177633Sdfr wakeup(cr); 916177633Sdfr } 917177633Sdfr mtx_unlock(&ct->ct_lock); 918177633Sdfr break; 919177633Sdfr } 920217242Srmacklem m_copydata(m, 0, sizeof(uint32_t), (char *)&header); 921177633Sdfr header = ntohl(header); 922177633Sdfr ct->ct_record = NULL; 923177633Sdfr ct->ct_record_resid = header & 0x7fffffff; 924177633Sdfr ct->ct_record_eor = ((header & 0x80000000) != 0); 925177633Sdfr m_freem(m); 926177633Sdfr } else { 927177633Sdfr /* 928184588Sdfr * Wait until the socket has the whole record 929184588Sdfr * buffered. 930184588Sdfr */ 931184588Sdfr do_read = FALSE; 932184588Sdfr if (so->so_rcv.sb_cc >= ct->ct_record_resid 933184588Sdfr || (so->so_rcv.sb_state & SBS_CANTRCVMORE) 934184588Sdfr || so->so_error) 935184588Sdfr do_read = TRUE; 936184588Sdfr 937184588Sdfr if (!do_read) 938193437Srmacklem break; 939184588Sdfr 940184588Sdfr /* 941177633Sdfr * We have the record mark. Read as much as 942177633Sdfr * the socket has buffered up to the end of 943177633Sdfr * this record. 944177633Sdfr */ 945193272Sjhb SOCKBUF_UNLOCK(&so->so_rcv); 946177633Sdfr uio.uio_resid = ct->ct_record_resid; 947177633Sdfr m = NULL; 948177633Sdfr rcvflag = MSG_DONTWAIT | MSG_SOCALLBCK; 949177633Sdfr error = soreceive(so, NULL, &uio, &m, NULL, &rcvflag); 950193272Sjhb SOCKBUF_LOCK(&so->so_rcv); 951177633Sdfr 952177633Sdfr if (error == EWOULDBLOCK) 953177633Sdfr break; 954177633Sdfr 955177633Sdfr if (error || uio.uio_resid == ct->ct_record_resid) 956177633Sdfr goto wakeup_all; 957177633Sdfr 958177633Sdfr /* 959177633Sdfr * If we have part of the record already, 960177633Sdfr * chain this bit onto the end. 961177633Sdfr */ 962177633Sdfr if (ct->ct_record) 963177633Sdfr m_last(ct->ct_record)->m_next = m; 964177633Sdfr else 965177633Sdfr ct->ct_record = m; 966177633Sdfr 967177633Sdfr ct->ct_record_resid = uio.uio_resid; 968177633Sdfr 969177633Sdfr /* 970177633Sdfr * If we have the entire record, see if we can 971177633Sdfr * match it to a request. 972177633Sdfr */ 973177633Sdfr if (ct->ct_record_resid == 0 974177633Sdfr && ct->ct_record_eor) { 975177633Sdfr /* 976177633Sdfr * The XID is in the first uint32_t of 977177633Sdfr * the reply. 978177633Sdfr */ 979217242Srmacklem if (ct->ct_record->m_len < sizeof(xid) && 980220585Srmacklem m_length(ct->ct_record, NULL) < 981220585Srmacklem sizeof(xid)) { 982220585Srmacklem m_freem(ct->ct_record); 983177633Sdfr break; 984220585Srmacklem } 985217242Srmacklem m_copydata(ct->ct_record, 0, sizeof(xid), 986217242Srmacklem (char *)&xid); 987177633Sdfr xid = ntohl(xid); 988177633Sdfr 989177633Sdfr mtx_lock(&ct->ct_lock); 990177633Sdfr foundreq = 0; 991177633Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 992177633Sdfr if (cr->cr_xid == xid) { 993177633Sdfr /* 994177633Sdfr * This one 995180025Sdfr * matches. We leave 996180025Sdfr * the reply mbuf in 997177633Sdfr * cr->cr_mrep. Set 998177633Sdfr * the XID to zero so 999180025Sdfr * that we will ignore 1000180025Sdfr * any duplicaed 1001180025Sdfr * replies. 1002177633Sdfr */ 1003177633Sdfr cr->cr_xid = 0; 1004177633Sdfr cr->cr_mrep = ct->ct_record; 1005177633Sdfr cr->cr_error = 0; 1006177633Sdfr foundreq = 1; 1007177633Sdfr wakeup(cr); 1008177633Sdfr break; 1009177633Sdfr } 1010177633Sdfr } 1011177633Sdfr mtx_unlock(&ct->ct_lock); 1012177633Sdfr 1013177633Sdfr if (!foundreq) 1014177633Sdfr m_freem(ct->ct_record); 1015177633Sdfr ct->ct_record = NULL; 1016177633Sdfr } 1017177633Sdfr } 1018177633Sdfr } while (m); 1019193437Srmacklem ct->ct_upcallrefs--; 1020193437Srmacklem if (ct->ct_upcallrefs < 0) 1021193437Srmacklem panic("rpcvc upcall refcnt"); 1022193437Srmacklem if (ct->ct_upcallrefs == 0) 1023193437Srmacklem wakeup(&ct->ct_upcallrefs); 1024193272Sjhb return (SU_OK); 1025177633Sdfr} 1026193437Srmacklem 1027193437Srmacklem/* 1028193437Srmacklem * Wait for all upcalls in progress to complete. 1029193437Srmacklem */ 1030193437Srmacklemstatic void 1031193437Srmacklemclnt_vc_upcallsdone(struct ct_data *ct) 1032193437Srmacklem{ 1033193437Srmacklem 1034193437Srmacklem SOCKBUF_LOCK_ASSERT(&ct->ct_socket->so_rcv); 1035193437Srmacklem 1036193437Srmacklem while (ct->ct_upcallrefs > 0) 1037193437Srmacklem (void) msleep(&ct->ct_upcallrefs, 1038193437Srmacklem SOCKBUF_MTX(&ct->ct_socket->so_rcv), 0, "rpcvcup", 0); 1039193437Srmacklem} 1040