1 /* $NetBSD: varpush.c,v 1.6 1997/10/12 00:54:44 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1993 5 * The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)varpush.c 8.1 (Berkeley) 5/31/93"; 40 #else 41 __RCSID("$NetBSD: varpush.c,v 1.6 1997/10/12 00:54:44 lukem Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 # include <paths.h> 46 # include "mille.h" 47 48 /* 49 * @(#)varpush.c 1.1 (Berkeley) 4/1/82 50 */ 51 52 /* 53 * push variables around via the routine func() on the file 54 * channel file. func() is either read or write. 55 */ 56 bool 57 varpush(file, func) 58 int file; 59 ssize_t (*func) __P((int, const struct iovec *, int)); 60 { 61 int temp; 62 const struct iovec vec[] = { 63 { (void *) &Debug, sizeof Debug }, 64 { (void *) &Finished, sizeof Finished }, 65 { (void *) &Order, sizeof Order }, 66 { (void *) &End, sizeof End }, 67 { (void *) &On_exit, sizeof On_exit }, 68 { (void *) &Handstart, sizeof Handstart }, 69 { (void *) &Numgos, sizeof Numgos }, 70 { (void *) Numseen, sizeof Numseen }, 71 { (void *) &Play, sizeof Play }, 72 { (void *) &Window, sizeof Window }, 73 { (void *) Deck, sizeof Deck }, 74 { (void *) &Discard, sizeof Discard }, 75 { (void *) Player, sizeof Player } 76 }; 77 78 if (((func)(file, vec, sizeof(vec) / sizeof(vec[0]))) < 0) { 79 error(strerror(errno)); 80 return FALSE; 81 } 82 if (func == readv) { 83 if ((read(file, (void *) &temp, sizeof temp)) < 0) { 84 error(strerror(errno)); 85 return FALSE; 86 } 87 Topcard = &Deck[temp]; 88 #ifdef DEBUG 89 if (Debug) { 90 char buf[80]; 91 over: 92 printf("Debug file:"); 93 gets(buf); 94 if ((outf = fopen(buf, "w")) == NULL) { 95 warn("%s", buf); 96 goto over; 97 } 98 if (strcmp(buf, _PATH_DEVNULL) != 0) 99 setbuf(outf, (char *)NULL); 100 } 101 #endif 102 } else { 103 temp = Topcard - Deck; 104 if ((write(file, (void *) &temp, sizeof temp)) < 0) { 105 error(strerror(errno)); 106 return FALSE; 107 } 108 } 109 return TRUE; 110 } 111