Linux下使用ioctl获取硬件信息------案例一
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#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <string.h>
unsigned char g_eth_name[16];
unsigned char g_macaddr[16];
unsigned int g_subnetmask;
unsigned int g_ipaddr;
unsigned int g_broadcast_ipaddr;
//初始化网络,获取当前网络设备信息
void init_net(void)
{
int i ;
int sock;
struct sockaddr_in sin;
struct ifreq ifr;
sock=socket(AF_INET, SOCK_DGRAM, 0);
if(sock==-1)
perror("socket");
strcpy(g_eth_name, "eth0");
strcpy(ifr.ifr_name, g_eth_name);
printf("eth name:\t%s\n", g_eth_name);
//获取并打印网卡地址
if(ioctl(sock, SIOCGIFHWADDR, &ifr) <0 )
perror("ioctl error\n");
memcpy(g_macaddr, ifr.ifr_hwaddr.sa_data,6);
printf("local mac:\t");
for(i=0;i<5;i++)
printf("%.2x:", g_macaddr[i]);
printf("%.2x\n",g_macaddr[i]);
//获取并打印IP地址
if(ioctl(sock, SIOCGIFADDR, &ifr)<0)
perror("ioctl error\n");
memcpy(&sin, &ifr.ifr_addr, sizeof(sin));
g_ipaddr = sin.sin_addr.s_addr;
printf("local eth0:\t%s\n", inet_ntoa(sin.sin_addr));
//获取并打印广播地址
if(ioctl(sock, SIOCGIFBRDADDR, &ifr)<0)
perror("ioctl error\n");
memcpy(&sin, &ifr.ifr_addr, sizeof(sin));
g_broadcast_ipaddr = sin.sin_addr.s_addr;
printf("broadcast:\t%s\n", inet_ntoa(sin.sin_addr));
//获取并打印子网掩码
if(ioctl(sock,SIOCGIFNETMASK,&ifr)<0)
perror("ioctl error\n");
memcpy(&sin, &ifr.ifr_addr, sizeof(sin));
g_subnetmask = sin.sin_addr.s_addr;
printf("subnetmask:\t%s\n", inet_ntoa(sin.sin_addr));
close(sock);
}
int main()
{
//initialize
init_net();
//do something
//....
return 0;
}
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <string.h>
unsigned char g_eth_name[16];
unsigned char g_macaddr[16];
unsigned int g_subnetmask;
unsigned int g_ipaddr;
unsigned int g_broadcast_ipaddr;
//初始化网络,获取当前网络设备信息
void init_net(void)
{
int i ;
int sock;
struct sockaddr_in sin;
struct ifreq ifr;
sock=socket(AF_INET, SOCK_DGRAM, 0);
if(sock==-1)
perror("socket");
strcpy(g_eth_name, "eth0");
strcpy(ifr.ifr_name, g_eth_name);
printf("eth name:\t%s\n", g_eth_name);
//获取并打印网卡地址
if(ioctl(sock, SIOCGIFHWADDR, &ifr) <0 )
perror("ioctl error\n");
memcpy(g_macaddr, ifr.ifr_hwaddr.sa_data,6);
printf("local mac:\t");
for(i=0;i<5;i++)
printf("%.2x:", g_macaddr[i]);
printf("%.2x\n",g_macaddr[i]);
//获取并打印IP地址
if(ioctl(sock, SIOCGIFADDR, &ifr)<0)
perror("ioctl error\n");
memcpy(&sin, &ifr.ifr_addr, sizeof(sin));
g_ipaddr = sin.sin_addr.s_addr;
printf("local eth0:\t%s\n", inet_ntoa(sin.sin_addr));
//获取并打印广播地址
if(ioctl(sock, SIOCGIFBRDADDR, &ifr)<0)
perror("ioctl error\n");
memcpy(&sin, &ifr.ifr_addr, sizeof(sin));
g_broadcast_ipaddr = sin.sin_addr.s_addr;
printf("broadcast:\t%s\n", inet_ntoa(sin.sin_addr));
//获取并打印子网掩码
if(ioctl(sock,SIOCGIFNETMASK,&ifr)<0)
perror("ioctl error\n");
memcpy(&sin, &ifr.ifr_addr, sizeof(sin));
g_subnetmask = sin.sin_addr.s_addr;
printf("subnetmask:\t%s\n", inet_ntoa(sin.sin_addr));
close(sock);
}
int main()
{
//initialize
init_net();
//do something
//....
return 0;
}
运行结果:
eth name: eth0
local mac: 34:97:f6:da:6c:ab
local eth0: 192.168.2.33
broadcast: 192.168.2.255
subnetmask: 255.255.255.0
0 0
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