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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
IF_NAMEINDEX(3P) POSIX Programmer's Manual IF_NAMEINDEX(3P)
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior), or
the interface may not be implemented on Linux.
if_nameindex — return all network interface names and indexes
#include <net/if.h>
struct if_nameindex *if_nameindex(void);
The if_nameindex() function shall return an array of if_nameindex
structures, one structure 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.
An array of structures identifying local interfaces. A null pointer
is returned upon an error, with errno set to indicate the error.
The if_nameindex() function may fail if:
ENOBUFS
Insufficient resources are available to complete the function.
The following sections are informative.
None.
None.
None.
None.
getsockopt(3p), if_freenameindex(3p), if_indextoname(3p),
if_nametoindex(3p), setsockopt(3p)
The Base Definitions volume of POSIX.1‐2008, net_if.h(0p)
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The Open
Group Base Specifications Issue 7, Copyright (C) 2013 by the
Institute of Electrical and Electronics Engineers, Inc and The Open
Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
applied.) 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.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the
source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 IF_NAMEINDEX(3P)
Pages that refer to this page: net_if.h(0p), if_freenameindex(3p), if_indextoname(3p), if_nametoindex(3p)