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 along 18 * with this program; see the file COPYING; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22 #ifndef _ZEBRA_NETWORK_H 23 #define _ZEBRA_NETWORK_H 24 25 #ifdef __cplusplus 26 extern "C" { 27 #endif 28 29 /* Both readn and writen are deprecated and will be removed. They are not 30 suitable for use with non-blocking file descriptors. 31 */ 32 extern int readn(int, uint8_t *, int); 33 extern int writen(int, const uint8_t *, int); 34 35 /* Set the file descriptor to use non-blocking I/O. Returns 0 for success, 36 -1 on error. */ 37 extern int set_nonblocking(int fd); 38 39 extern int set_cloexec(int fd); 40 41 /* Does the I/O error indicate that the operation should be retried later? */ 42 #define ERRNO_IO_RETRY(EN) \ 43 (((EN) == EAGAIN) || ((EN) == EWOULDBLOCK) || ((EN) == EINTR)) 44 45 extern float htonf(float); 46 extern float ntohf(float); 47 48 extern long frr_weak_random(void); 49 50 #ifdef __cplusplus 51 } 52 #endif 53 54 #endif /* _ZEBRA_NETWORK_H */ 55