Originální popis anglicky:
if_indextoname - map a network interface index to its corresponding name
Návod, kniha: POSIX Programmer's Manual
#include <net/if.h>
char *if_indextoname(unsigned
ifindex, char
* ifname);
The
if_indextoname() function shall map an interface index to its
corresponding name.
When this function is called,
ifname shall point to a buffer of at least
{IF_NAMESIZE} bytes. The function shall place in this buffer the name of the
interface with index
ifindex.
If
ifindex is an interface index, then the function shall return the
value supplied in
ifname, which points to a buffer now containing the
interface name. Otherwise, the function shall return a NULL pointer and set
errno to indicate the error.
The
if_indextoname() function shall fail if:
- ENXIO
- The interface does not exist.
The following sections are informative.
None.
None.
None.
None.
getsockopt() ,
if_freenameindex() ,
if_nameindex() ,
if_nametoindex() ,
setsockopt() , the Base Definitions volume of
IEEE Std 1003.1-2001,
<net/if.h>
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 original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
