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: */
29: extern int readn (int, u_char *, int);
30: extern 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. */
34: extern 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 */
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