C++ 获取 eth0 的 mac 地址
时间: 2024-01-10 13:02:06 浏览: 31
C 获取 eth0 的 mac 地址可以使用 ioctl 函数和 SIOCGIFHWADDR 命令来实现。下面是示例代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int main(int argc, char *argv[]) {
int fd;
struct ifreq ifr;
unsigned char *mac;
fd = socket(AF_INET, SOCK_DGRAM, 0);
ifr.ifr_addr.sa_family = AF_INET;
strncpy(ifr.ifr_name, "eth0", IFNAMSIZ-1);
ioctl(fd, SIOCGIFHWADDR, &ifr);
close(fd);
mac = (unsigned char *)ifr.ifr_hwaddr.sa_data;
printf("MAC address of eth0: %02x:%02x:%02x:%02x:%02x:%02x\n",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
return 0;
}
```
希望能为您提供帮助。