Merge branch 'vendor/BINUTILS220'
[dragonfly.git] / games / mille / varpush.c
CommitLineData
6693db17 1/*-
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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.
6693db17 13 * 3. Neither the name of the University nor the names of its contributors
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14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
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28 *
29 * @(#)varpush.c 8.1 (Berkeley) 5/31/93
30 * $FreeBSD: src/games/mille/varpush.c,v 1.6 1999/12/12 06:17:25 billf Exp $
46c76430 31 * $DragonFly: src/games/mille/varpush.c,v 1.3 2006/08/27 17:17:23 pavalos Exp $
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32 */
33
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34#include <errno.h>
35#include <paths.h>
36#include "mille.h"
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37
38/*
39 * @(#)varpush.c 1.1 (Berkeley) 4/1/82
40 */
41
42/*
43 * push variables around via the routine func() on the file
46c76430 44 * channel file. func() is either readv or writev.
984263bc 45 */
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46bool
47varpush(int file, ssize_t (*func)(int, const struct iovec *, int))
48{
6693db17 49 int temp;
46c76430 50 const struct iovec iov[] = {
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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 }
46c76430 64 };
984263bc 65
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66 if (((func)(file, iov, sizeof(iov) /sizeof(iov[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 }
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76 Topcard = &Deck[temp];
77#ifdef DEBUG
78 if (Debug) {
79 char buf[80];
80over:
81 printf("Debug file:");
82 fgets(buf, 80, stdin);
83 if ((outf = fopen(buf, "w")) == NULL) {
84 perror(buf);
85 goto over;
86 }
87 if (strcmp(buf, _PATH_DEVNULL) != 0)
2038fb68 88 setbuf(outf, NULL);
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89 }
90#endif
6693db17 91 } else {
984263bc 92 temp = Topcard - Deck;
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93 if ((write(file, (void *) &temp, sizeof temp)) < 0) {
94 error(strerror(errno));
95 return FALSE;
96 }
984263bc 97 }
46c76430 98 return TRUE;
984263bc 99}