NAME

if_nameindex − Return an array of all interface names and indexes

SYNOPSIS

#include <net/if.h>
struct if_nameindex ∗if_nameindex(
        void );

LIBRARY

Standard C Library (libc)

DESCRIPTION

The if_nameindex() function dynamically allocates memory for an array of if_nameindex structures, one structure for each interface. A structure with a zero (0) if_index value and a NULL if_name value indicates the end of the array. 

You must define the following if_nameindex structure prior to a call to if_nameindex():

struct if_nameindex {
    unsigned int   if_index;
    char           ∗if_name;
 };

To free memory allocated by this function, use the if_freenameindex() function. 

RETURN VALUES

Upon successful conversion, the if_nameindex() function returns a pointer to the first structure in the array of if_nameindex structures. 

SEE ALSO

Functions: if_freenameindex(3), if_indextoname(3), if_nametoindex(3).