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