1 /* $NetBSD: varpush.c,v 1.8 2004/01/27 20:30:30 jsm 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)varpush.c 8.1 (Berkeley) 5/31/93"; 36 #else 37 __RCSID("$NetBSD: varpush.c,v 1.8 2004/01/27 20:30:30 jsm 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 if (func == readv) { 79 if ((read(file, (void *) &temp, sizeof temp)) < 0) { 80 error(strerror(errno)); 81 return FALSE; 82 } 83 Topcard = &Deck[temp]; 84 #ifdef DEBUG 85 if (Debug) { 86 char buf[80]; 87 over: 88 printf("Debug file:"); 89 gets(buf); 90 if ((outf = fopen(buf, "w")) == NULL) { 91 warn("%s", buf); 92 goto over; 93 } 94 if (strcmp(buf, _PATH_DEVNULL) != 0) 95 setbuf(outf, (char *)NULL); 96 } 97 #endif 98 } else { 99 temp = Topcard - Deck; 100 if ((write(file, (void *) &temp, sizeof temp)) < 0) { 101 error(strerror(errno)); 102 return FALSE; 103 } 104 } 105 return TRUE; 106 } 107