summaryrefslogtreecommitdiffstats
path: root/libdaemon/dnonblock.c
blob: 79b743a0a1622ed2455c81a7190b9ce187ed4539 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
/* $Id$ */

/*
 * This file is part of libdaemon.
 *
 * libdaemon is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * libdaemon is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with libdaemon; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <fcntl.h>

#include "dnonblock.h"

int daemon_nonblock(int fd, int b) {
    int a;
    if ((a = fcntl(fd, F_GETFL)) < 0)
        return -1;

    if (b)
        a |= O_NDELAY;
    else
        a &= ~O_NDELAY;

    if (fcntl(fd, F_SETFL, a) < 0)
        return -1;

    return 0;
}