linux下檢測網絡卡與網線連通狀態

include

< stdio. h>

#include

< stdlib. h>

#include

<

string

. h>

#include

< fcntl. h>

#include

<

errno

. h>

#include

< sys/ ioctl. h>

#include

< sys/ types. h>

#include

< sys/

socket

. h>

#include

< linux/

if. h>

#include

< linux/ sockios. h>

#include

< linux/ ethtool. h>

int get_netlink_status(

const

char

* if_name)

;int main(

)printf

("net link status: %d/n"

, get_netlink_status(

"eth0"))

;return 0;

}// if_name like "ath0", "eth0". notice: call this function

// need root privilege.

// return value:

// -1 -- error , details can check errno

// 1 -- inte***ce link up

// 0 -- inte***ce link down.

int get_netlink_status(

const

char

* if_name)

close

( skfd)

;return edata. data;