1 /* $OpenBSD: varpush.c,v 1.7 2009/10/27 23:59:26 deraadt Exp $ */ 2 /* $NetBSD: varpush.c,v 1.4 1995/03/24 05:02:35 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1982, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 # include <paths.h> 34 # include "mille.h" 35 36 /* 37 * @(#)varpush.c 1.1 (Berkeley) 4/1/82 38 */ 39 40 /* 41 * push variables around via the routine func() on the file 42 * channel file. func() is either read or write. 43 */ 44 bool 45 varpush(file, func) 46 int file; 47 ssize_t (*func)(int, const struct iovec *, int); 48 { 49 int temp; 50 const struct iovec vec[] = { 51 { (void *) &Debug, sizeof Debug }, 52 { (void *) &Finished, sizeof Finished }, 53 { (void *) &Order, sizeof Order }, 54 { (void *) &End, sizeof End }, 55 { (void *) &On_exit, sizeof On_exit }, 56 { (void *) &Handstart, sizeof Handstart }, 57 { (void *) &Numgos, sizeof Numgos }, 58 { (void *) Numseen, sizeof Numseen }, 59 { (void *) &Play, sizeof Play }, 60 { (void *) &Window, sizeof Window }, 61 { (void *) Deck, sizeof Deck }, 62 { (void *) &Discard, sizeof Discard }, 63 { (void *) Player, sizeof Player } 64 }; 65 66 if (((func)(file, vec, sizeof(vec) / sizeof(vec[0]))) < 0) { 67 error(strerror(errno)); 68 return FALSE; 69 } 70 71 if (func == readv) { 72 if ((read(file, (void *) &temp, sizeof temp)) < 0) { 73 error(strerror(errno)); 74 return FALSE; 75 } 76 Topcard = &Deck[temp]; 77 #ifdef DEBUG 78 if (Debug) { 79 char buf[80]; 80 over: 81 printf("Debug file:"); 82 fgets(buf, sizeof(buf), stdin); 83 if ((outf = fopen(buf, "w")) == NULL) { 84 warn("%s", buf); 85 goto over; 86 } 87 if (strcmp(buf, _PATH_DEVNULL) != 0) 88 setbuf(outf, (char *)NULL); 89 } 90 #endif 91 } else { 92 temp = Topcard - Deck; 93 if ((write(file, (void *) &temp, sizeof temp)) < 0) { 94 error(strerror(errno)); 95 return FALSE; 96 } 97 } 98 return TRUE; 99 } 100