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quagga

    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 */