1/* $NetBSD: am_glue.c,v 1.3 2010/02/26 22:44:17 christos Exp $ */ 2 3/*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30#ifndef lint 31__RCSID("$NetBSD: am_glue.c,v 1.3 2010/02/26 22:44:17 christos Exp $"); 32#endif /* not lint */ 33 34#ifdef HAVE_CONFIG_H 35# include <config.h> 36#endif /* HAVE_CONFIG_H */ 37#include <am_defs.h> 38#include <amu.h> 39#include <rpc/pmap_prot.h> 40#include <rpc/pmap_clnt.h> 41 42#include <stdbool.h> 43 44#include "am_glue.h" 45 46static CLIENT *clnt; 47 48static struct timeval tv = { 5, 0 }; 49/* 50 * Appease lint: Properly typecast some numbers defined in 51 * src/extern/bsd/am-utils/dist/include/amq_defs.h. 52 */ 53#define xAMQ_PROGRAM (rpcprog_t)AMQ_PROGRAM 54#define xAMQ_VERSION (rpcvers_t)AMQ_VERSION 55#define xAMQPROC_SYNC_UMNT (rpcproc_t)AMQPROC_SYNC_UMNT 56 57static int 58ping_pmap(void) 59{ 60 u_short port = 0; 61 CLIENT *cl; 62 struct pmap parms; 63 struct sockaddr_in si; 64 int s = -1, rv; 65 static struct timeval pingtv = { 1, 0 }; 66 67 (void)memset(&si, 0, sizeof(si)); 68 si.sin_family = AF_INET; 69 si.sin_len = sizeof(si); 70 si.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 71 si.sin_port = htons(PMAPPORT); 72 73 if ((cl = clntudp_bufcreate(&si, PMAPPROG, PMAPVERS, pingtv, 74 &s, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE)) == NULL) 75 return -1; 76 77 parms.pm_prog = PMAPPROG; 78 parms.pm_vers = PMAPVERS; 79 parms.pm_prot = IPPROTO_UDP; 80 parms.pm_port = 0; /* not needed or used */ 81 82 rv = CLNT_CALL(cl, (rpcproc_t)PMAPPROC_GETPORT, 83 (xdrproc_t)xdr_pmap, &parms, 84 (xdrproc_t)xdr_u_short, &port, pingtv) == RPC_SUCCESS ? 0 : -1; 85 86 CLNT_DESTROY(cl); 87 return rv; 88} 89 90static void 91am_init(void) 92{ 93 static const char *server = "localhost"; 94 static bool called; 95 96 if (called) 97 return; 98 called = true; 99 100 if (ping_pmap() == -1) 101 return; 102 /* 103 * Create RPC endpoint 104 */ 105 /* try tcp first */ 106 clnt = clnt_create(server, xAMQ_PROGRAM, xAMQ_VERSION, "tcp"); 107 if (clnt != NULL) 108 return; 109 110 /* try udp next */ 111 clnt = clnt_create(server, xAMQ_PROGRAM, xAMQ_VERSION, "udp"); 112 if (clnt != NULL) /* set udp timeout */ 113 (void)clnt_control(clnt, CLSET_RETRY_TIMEOUT, (void *)&tv); 114} 115 116int 117am_unmount(const char *dirname) 118{ 119 static struct timeval timeout = { ALLOWED_MOUNT_TIME, 0 }; 120 amq_sync_umnt result; 121 122 am_init(); 123 124 if (clnt == NULL) 125 return AMQ_UMNT_FAILED; 126 127 if (clnt_call(clnt, xAMQPROC_SYNC_UMNT, xdr_amq_string, &dirname, 128 xdr_amq_sync_umnt, (void *)&result, timeout) != RPC_SUCCESS) 129 return AMQ_UMNT_SERVER; 130 131 return result.au_etype; 132} 133