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Return a list of interfaces
#include <net/if.h>
struct if_nameindex * if_nameindex( void );
libsocket
Use the -l socket option to
qcc
to link against this library.
The if_nameindex() function returns an array of
if_nameindex structures, with
one structure per interface, as defined in the include file <net/if.h>.
The if_nameindex structure contains at least the following
members:
- unsigned int if_index
- The index of the interface (1, 2, …).
- char *if_name
- A null-terminated name (e.g. le0).
The end of the array of structures is indicated by an entry with an
if_index of 0 and an if_name of NULL.
A valid array of if_nameindex structures, or
NULL if and error occurred while using
getifaddrs()
to retrieve the list, or there wasn't enough memory available.
POSIX 1003.1
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
getifaddrs(),
if_freenameindex(),
if_indextoname(),
if_nametoindex()
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