ifconfig.c File Reference

#include <arpa/inet.h>
#include <errno.h>
#include <net/if.h>
#include <netinet/in.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <unistd.h>

Include dependency graph for ifconfig.c:

Functions
size_t	strlcpy (char *dst, const char *src, size_t siz)
	Safe version of strncpy() from OpenBSD. More...
int	ifconfig (const char *ifname, const char *addr, const char *mask, int up)
	Basic ifconfig like operations on an interface. More...

Detailed Description

Author

Claudio Matsuoka

Joachim Wiberg

Date

2008-2021

Copyright

MIT License

Function Documentation

ifconfig()

int ifconfig	(	const char *	ifname,
		const char *	addr,
		const char *	mask,
		int	up
	)

Basic ifconfig like operations on an interface.

Parameters

ifname	Name of interface to operate on
addr	If up then set this optional IPv4 address
mask	If up and addr, and addr is not INADDR_ANY, then set netmask
up	Control IFF_UP flag on interface

Returns

POSIX OK(0) on success, or non-zero on error.

strlcpy()

size_t strlcpy	(	char *	dst,
		const char *	src,
		size_t	dsize
	)

Safe version of strncpy() from OpenBSD.

Parameters

dst	Destination string
src	Source string
dsize	Total maximum size of dst

This function copies string src to buffer dst of size dsize bytes. At most dsize-1 chars will be copied. Always NUL terminates (unless dsize==0).

Returns

strlen(src); if retval >= dsize, truncation occurred.