1 /* $OpenBSD: varpush.c,v 1.6 2003/06/03 03:01:40 millert 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 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)varpush.c 8.1 (Berkeley) 5/31/93"; 36 #else 37 static char rcsid[] = "$OpenBSD: varpush.c,v 1.6 2003/06/03 03:01:40 millert Exp $"; 38 #endif 39 #endif /* not lint */ 40 41 # include <paths.h> 42 # include "mille.h" 43 44 /* 45 * @(#)varpush.c 1.1 (Berkeley) 4/1/82 46 */ 47 48 /* 49 * push variables around via the routine func() on the file 50 * channel file. func() is either read or write. 51 */ 52 bool 53 varpush(file, func) 54 int file; 55 ssize_t (*func)(int, const struct iovec *, int); 56 { 57 int temp; 58 const struct iovec vec[] = { 59 { (void *) &Debug, sizeof Debug }, 60 { (void *) &Finished, sizeof Finished }, 61 { (void *) &Order, sizeof Order }, 62 { (void *) &End, sizeof End }, 63 { (void *) &On_exit, sizeof On_exit }, 64 { (void *) &Handstart, sizeof Handstart }, 65 { (void *) &Numgos, sizeof Numgos }, 66 { (void *) Numseen, sizeof Numseen }, 67 { (void *) &Play, sizeof Play }, 68 { (void *) &Window, sizeof Window }, 69 { (void *) Deck, sizeof Deck }, 70 { (void *) &Discard, sizeof Discard }, 71 { (void *) Player, sizeof Player } 72 }; 73 74 if (((func)(file, vec, sizeof(vec) / sizeof(vec[0]))) < 0) { 75 error(strerror(errno)); 76 return FALSE; 77 } 78 79 if (func == readv) { 80 if ((read(file, (void *) &temp, sizeof temp)) < 0) { 81 error(strerror(errno)); 82 return FALSE; 83 } 84 Topcard = &Deck[temp]; 85 #ifdef DEBUG 86 if (Debug) { 87 char buf[80]; 88 over: 89 printf("Debug file:"); 90 fgets(buf, sizeof(buf), stdin); 91 if ((outf = fopen(buf, "w")) == NULL) { 92 warn("%s", buf); 93 goto over; 94 } 95 if (strcmp(buf, _PATH_DEVNULL) != 0) 96 setbuf(outf, (char *)NULL); 97 } 98 #endif 99 } else { 100 temp = Topcard - Deck; 101 if ((write(file, (void *) &temp, sizeof temp)) < 0) { 102 error(strerror(errno)); 103 return FALSE; 104 } 105 } 106 return TRUE; 107 } 108