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IF_NAMEINDEX(P) 		    POSIX Programmer's Manual			  IF_NAMEINDEX(P)

NAME
       if_nameindex - return all network interface names and indexes

SYNOPSIS
       #include <net/if.h>

       struct if_nameindex *if_nameindex(void);

DESCRIPTION
       The  if_nameindex()  function shall return an array of if_nameindex structures, one struc-
       ture per interface. The end of the array is indicated by  a  structure  with  an  if_index
       field of zero and an if_name field of NULL.

       Applications  should call if_freenameindex() to release the memory that may be dynamically
       allocated by this function, after they have finished using it.

RETURN VALUE
       An array of structures identifying local interfaces. A NULL pointer is  returned  upon  an
       error, with errno set to indicate the error.

ERRORS
       The if_nameindex() function may fail if:

       ENOBUFS
	      Insufficient resources are available to complete the function.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       getsockopt()  ,	if_freenameindex() , if_indextoname() , if_nametoindex() , setsockopt() ,
       the Base Definitions volume of IEEE Std 1003.1-2001, <net/if.h>

COPYRIGHT
       Portions of this text are reprinted and	reproduced  in	electronic  form  from	IEEE  Std
       1003.1,	2003  Edition,	Standard  for Information Technology -- Portable Operating System
       Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003  by
       the  Institute  of  Electrical  and  Electronics Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE  and  The  Open  Group
       Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				  IF_NAMEINDEX(P)
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