using C code to get same info as ifconfig

Question

Is there a way in Linux, using C code, to get the same information that \"ifconfig eth0\" would return? I\'m interested in things like IP address, link status, and MAC addr

Answer 1

Yes, ifconfig itself is written in C. :) See: http://cvsweb.netbsd.org/bsdweb.cgi/src/sbin/ifconfig/ifconfig.c?rev=1.169&content-type=text/x-cvsweb-markup

Do man netdevice to see the details (on Linux). You use the ioctl() system call.