linux c语言 开发板所有网卡名及IP
linux c语言 开发板所有网卡名及IP
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netdb.h>
#include <ifaddrs.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>int
main(int argc, char *argv[])
{struct ifaddrs *ifaddr, *ifa;int family;//char host[NI_MAXHOST];if (getifaddrs(&ifaddr) == -1){perror("getifaddrs");exit(EXIT_FAILURE);}for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {if (ifa->ifa_addr == NULL)continue;family = ifa->ifa_addr->sa_family;if (family == AF_INET){printf("interfac: %s, ip: %s\n", ifa->ifa_name, inet_ntoa(((struct sockaddr_in*)ifa->ifa_addr)->sin_addr));}}freeifaddrs(ifaddr);exit(EXIT_SUCCESS);
}
//指定ip
//@netName 指定网卡名 比如eth0
//@outIp 得到的ip
//return 1成功 0失败
int getIp(char *netName,char *outIp)
{struct ifaddrs *ifaddr, *ifa;int family;//char host[NI_MAXHOST];if (getifaddrs(&ifaddr) == -1){perror("getifaddrs\n");return 0;}for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {if (ifa->ifa_addr == NULL)continue;family = ifa->ifa_addr->sa_family;if (family == AF_INET){if(strcmp(netName,ifa->ifa_name)==0){printf("interfac: %s, ip: %s\n", ifa->ifa_name, inet_ntoa(((struct sockaddr_in*)ifa->ifa_addr)->sin_addr));sprintf(outIp,inet_ntoa(((struct sockaddr_in*)ifa->ifa_addr)->sin_addr));freeifaddrs(ifaddr);return 1;}}}freeifaddrs(ifaddr);return 0;
}
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