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Map an interface name to its index
#include <net/if.h>
unsigned int if_nametoindex( const char * ifname );
- ifname
- The interface name that you want to map.
libsocket
Use the -l socket option to
qcc
to link against this library.
The if_nametoindex() function maps the interface name specified by ifname to its corresponding index.
The index number of the interface, or 0 if the specified interface couldn't
be found or an error occurred while using
getifaddrs()
to retrieve the list of interfaces.
POSIX 1003.1
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
getifaddrs(),
if_freenameindex(),
if_indextoname(),
if_nameindex()
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