# 2.11BSD#431 - /usr/man/cat3/endnetent.0

    GETNETENT(3N)	    UNIX Programmer's Manual	    GETNETENT(3N)

    NAME
         getnetent, getnetbyaddr, getnetbyname, setnetent, endnetent
         - get network entry

    SYNOPSIS
         #include <netdb.h>

         struct netent *getnetent()

         struct netent *getnetbyname(name)
         char *name;

         struct netent *getnetbyaddr(net, type)
         long net;
         int type;

         setnetent(stayopen)
         int stayopen;

         endnetent()

    DESCRIPTION
         Getnetent, getnetbyname, and getnetbyaddr each return a
         pointer to an object with the following structure containing
         the broken-out fields of a line in the network data base,
         /etc/networks.

    	  struct    netent {
    	       char	 *n_name;  /* official name of net */
    	       char	 **n_aliases;	/* alias list */
    	       int	 n_addrtype;	/* net number type */
    	       unsigned long  n_net;	     /* net number */
    	  };

         The members of this structure are:

         n_name	 The official name of the network.

         n_aliases	 A zero terminated list of  alternate  names  for
    		 the network.

         n_addrtype  The  type  of	the  network   number	returned;
    		 currently only AF_INET.

         n_net	 The  network  number.	  Network   numbers   are
    		 returned in machine byte order.

         Getnetent reads the next line of the file, opening the  file
         if necessary.

         Setnetent opens and rewinds the file.  If the stayopen  flag
         is non-zero, the net data base will not be closed after each

    Printed 11/26/99	  May 19, 1986				1

    GETNETENT(3N)	    UNIX Programmer's Manual	    GETNETENT(3N)

         call to getnetbyname or getnetbyaddr.

         Endnetent closes the file.

         Getnetbyname and getnetbyaddr sequentially search	from  the
         beginning	of  the  file  until  a  matching net name or net
         address and type is found,  or  until  EOF  is  encountered.
         Network numbers are supplied in host order.

    FILES
         /etc/networks

    SEE ALSO
         networks(5)

    DIAGNOSTICS
         Null pointer (0) returned on EOF or error.

    BUGS
         All information is contained in a static area so it must  be
         copied  if it is to be saved.  Only Internet network numbers
         are currently understood.	Expecting network numbers to  fit
         in no more than 32 bits is probably naive.

    Printed 11/26/99	  May 19, 1986				2

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