1 /* 2 * Copyright (c) 1982, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)varpush.c 8.1 (Berkeley) 5/31/93 34 * $FreeBSD: src/games/mille/varpush.c,v 1.6 1999/12/12 06:17:25 billf Exp $ 35 * $DragonFly: src/games/mille/varpush.c,v 1.3 2006/08/27 17:17:23 pavalos Exp $ 36 */ 37 38 # include <errno.h> 39 # include <paths.h> 40 # include "mille.h" 41 42 /* 43 * @(#)varpush.c 1.1 (Berkeley) 4/1/82 44 */ 45 46 /* 47 * push variables around via the routine func() on the file 48 * channel file. func() is either readv or writev. 49 */ 50 bool 51 varpush(int file, ssize_t (*func)(int, const struct iovec *, int)) 52 { 53 54 int temp; 55 const struct iovec iov[] = { 56 { (void *) &Debug, sizeof Debug }, 57 { (void *) &Finished, sizeof Finished }, 58 { (void *) &Order, sizeof Order }, 59 { (void *) &End, sizeof End }, 60 { (void *) &On_exit, sizeof On_exit }, 61 { (void *) &Handstart, sizeof Handstart }, 62 { (void *) &Numgos, sizeof Numgos }, 63 { (void *) Numseen, sizeof Numseen }, 64 { (void *) &Play, sizeof Play }, 65 { (void *) &Window, sizeof Window }, 66 { (void *) Deck, sizeof Deck }, 67 { (void *) &Discard, sizeof Discard }, 68 { (void *) Player, sizeof Player } 69 }; 70 71 if (((func)(file, iov, sizeof(iov) /sizeof(iov[0]))) < 0) { 72 error(strerror(errno)); 73 return FALSE; 74 } 75 76 if (func == readv) { 77 if ((read(file, (void *) &temp, sizeof temp)) < 0) { 78 error(strerror(errno)); 79 return FALSE; 80 } 81 Topcard = &Deck[temp]; 82 #ifdef DEBUG 83 if (Debug) { 84 char buf[80]; 85 over: 86 printf("Debug file:"); 87 fgets(buf, 80, stdin); 88 if ((outf = fopen(buf, "w")) == NULL) { 89 perror(buf); 90 goto over; 91 } 92 if (strcmp(buf, _PATH_DEVNULL) != 0) 93 setbuf(outf, (char *)NULL); 94 } 95 #endif 96 } 97 else { 98 temp = Topcard - Deck; 99 if ((write(file, (void *) &temp, sizeof temp)) < 0) { 100 error(strerror(errno)); 101 return FALSE; 102 } 103 } 104 return TRUE; 105 } 106