chiark / gitweb /
(conn_connect): Change sizes to be @size_t@.
[mLib] / fdflags.c
CommitLineData
aab9ab9f 1/* -*-c-*-
2 *
3 * $Id: fdflags.c,v 1.1 1999/07/26 23:16:59 mdw Exp $
4 *
5 * Manipulates flags on file descriptors
6 *
7 * (c) 1999 Straylight/Edgeware
8 */
9
10/*----- Licensing notice --------------------------------------------------*
11 *
12 * This file is part of the mLib utilities library.
13 *
14 * mLib is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
18 *
19 * mLib is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
23 *
24 * You should have received a copy of the GNU Library General Public
25 * License along with mLib; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
27 * MA 02111-1307, USA.
28 */
29
30/*----- Revision history --------------------------------------------------*
31 *
32 * $Log: fdflags.c,v $
33 * Revision 1.1 1999/07/26 23:16:59 mdw
34 * Manipulate file descriptor flags.
35 *
36 */
37
38/*----- Header files ------------------------------------------------------*/
39
40#include <stdio.h>
41#include <stdlib.h>
42#include <string.h>
43
44#include <fcntl.h>
45
46#include "fdflags.h"
47
48/*----- Main code ---------------------------------------------------------*/
49
50/* --- @fdflags@ --- *
51 *
52 * Arguments: @int fd@ = file descriptor to fiddle with
53 * @unsigned fbic, fxor@ = file flags to set and clear
54 * @unsigned fdbic, fdxor@ = descriptor flags to set and clear
55 *
56 * Returns: Zero if successful, @-1@ if not.
57 *
58 * Use: Sets file descriptor flags in what is, I hope, an obvious
59 * way.
60 */
61
62int fdflags(int fd, unsigned fbic, unsigned fxor,
63 unsigned fdbic, unsigned fdxor)
64{
65 int f;
66
67 if ((f = fcntl(fd, F_GETFL)) == -1 ||
68 fcntl(fd, F_SETFL, (f & ~fbic) ^ fxor) == -1 ||
69 (f = fcntl(fd, F_GETFD)) == -1 ||
70 fcntl(fd, F_SETFD, (f & ~fdbic) ^ fdxor) == -1)
71 return (-1);
72 return (0);
73}
74
75/*----- That's all, folks -------------------------------------------------*/