1/*
2 * Network library header.
3 * Copyright (C) 1998 Kunihiro Ishiguro
4 *
5 * This file is part of GNU Zebra.
6 *
7 * GNU Zebra is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
10 * later version.
11 *
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Zebra; see the file COPYING.  If not, write to the Free
19 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 * 02111-1307, USA.
21 */
22
23#ifndef _ZEBRA_NETWORK_H
24#define _ZEBRA_NETWORK_H
25
26/* Both readn and writen are deprecated and will be removed.  They are not
27   suitable for use with non-blocking file descriptors.
28 */
29extern int readn (int, u_char *, int);
30extern int writen (int, const u_char *, int);
31
32/* Set the file descriptor to use non-blocking I/O.  Returns 0 for success,
33   -1 on error. */
34extern int set_nonblocking(int fd);
35
36/* Does the I/O error indicate that the operation should be retried later? */
37#define ERRNO_IO_RETRY(EN) \
38	(((EN) == EAGAIN) || ((EN) == EWOULDBLOCK) || ((EN) == EINTR))
39
40#endif /* _ZEBRA_NETWORK_H */
41