/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * Portions of this source code were derived from Berkeley * 4.3 BSD under license from the Regents of the University of * California. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * clnt_simple.c * Simplified front end to client rpc. * */ #include "mt.h" #include "rpc_mt.h" #include <stdio.h> #include <errno.h> #include <rpc/rpc.h> #include <string.h> #include <sys/param.h> #include <stdlib.h> #include <unistd.h> #ifndef MAXHOSTNAMELEN #define MAXHOSTNAMELEN 64 #endif #ifndef NETIDLEN #define NETIDLEN 32 #endif struct rpc_call_private { int valid; /* Is this entry valid ? */ CLIENT *client; /* Client handle */ pid_t pid; /* process-id at moment of creation */ rpcprog_t prognum; /* Program */ rpcvers_t versnum; /* version */ char host[MAXHOSTNAMELEN]; /* Servers host */ char nettype[NETIDLEN]; /* Network type */ }; static void rpc_call_destroy(void *vp) { struct rpc_call_private *rcp = (struct rpc_call_private *)vp; if (rcp) { if (rcp->client) CLNT_DESTROY(rcp->client); free(rcp); } } /* * This is the simplified interface to the client rpc layer. * The client handle is not destroyed here and is reused for * the future calls to same prog, vers, host and nettype combination. * * The total time available is 25 seconds. */ enum clnt_stat rpc_call(const char *host, const rpcprog_t prognum, const rpcvers_t versnum, const rpcproc_t procnum, const xdrproc_t inproc, const char *in, const xdrproc_t outproc, char *out, const char *netclass) { struct rpc_call_private *rcp; enum clnt_stat clnt_stat; struct timeval timeout, tottimeout; static pthread_key_t rpc_call_key; char nettype_array[NETIDLEN]; char *nettype = &nettype_array[0]; if (netclass == NULL) nettype = NULL; else { size_t len = strlen(netclass); if (len >= sizeof (nettype_array)) { rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; return (rpc_createerr.cf_stat); } (void) strcpy(nettype, netclass); } rcp = thr_get_storage(&rpc_call_key, sizeof (*rcp), rpc_call_destroy); if (rcp == NULL) { rpc_createerr.cf_stat = RPC_SYSTEMERROR; rpc_createerr.cf_error.re_errno = errno; return (rpc_createerr.cf_stat); } if ((nettype == NULL) || (nettype[0] == NULL)) nettype = "netpath"; if (!(rcp->valid && rcp->pid == getpid() && rcp->prognum == prognum && rcp->versnum == versnum && strcmp(rcp->host, host) == 0 && strcmp(rcp->nettype, nettype) == 0)) { int fd; rcp->valid = 0; if (rcp->client) CLNT_DESTROY(rcp->client); /* * Using the first successful transport for that type */ rcp->client = clnt_create(host, prognum, versnum, nettype); rcp->pid = getpid(); if (rcp->client == NULL) return (rpc_createerr.cf_stat); /* * Set time outs for connectionless case. Do it * unconditionally. Faster than doing a t_getinfo() * and then doing the right thing. */ timeout.tv_usec = 0; timeout.tv_sec = 5; (void) CLNT_CONTROL(rcp->client, CLSET_RETRY_TIMEOUT, (char *)&timeout); if (CLNT_CONTROL(rcp->client, CLGET_FD, (char *)&fd)) _fcntl(fd, F_SETFD, 1); /* make it "close on exec" */ rcp->prognum = prognum; rcp->versnum = versnum; if ((strlen(host) < (size_t)MAXHOSTNAMELEN) && (strlen(nettype) < (size_t)NETIDLEN)) { (void) strcpy(rcp->host, host); (void) strcpy(rcp->nettype, nettype); rcp->valid = 1; } else { rcp->valid = 0; } } /* else reuse old client */ tottimeout.tv_sec = 25; tottimeout.tv_usec = 0; clnt_stat = CLNT_CALL(rcp->client, procnum, inproc, (char *)in, outproc, out, tottimeout); /* * if call failed, empty cache */ if (clnt_stat != RPC_SUCCESS) rcp->valid = 0; return (clnt_stat); }