IOCTL 添加路由

来源：互联网发布：ubuntu paichu fuzhi 编辑：程序博客网时间：2024/06/04 01:10

#include <errno.h>#include <stdio.h>#include <string.h>#include <stdlib.h>#include <net/route.h>#include <sys/types.h>#include <sys/ioctl.h>int main(char** args) {  int sockfd;  struct rtentry route;  struct sockaddr_in *addr;  int err = 0;  // create the socket if((sockfd = socket(AF_INET, SOCK_DGRAM, 0)))<0){perror("socket");exit(1);}  memset(&route, 0, sizeof(route));  addr = (struct sockaddr_in*) &route.rt_gateway;  addr->sin_family = AF_INET;  addr->sin_addr.s_addr = inet_addr("192.168.2.1");  addr = (struct sockaddr_in*) &route.rt_dst;  addr->sin_family = AF_INET;  addr->sin_addr.s_addr = INADDR_ANY;  addr = (struct sockaddr_in*) &route.rt_genmask;  addr->sin_family = AF_INET;  addr->sin_addr.s_addr = INADDR_ANY;  // TODO Add the interface name to the request  route.rt_flags = RTF_UP | RTF_GATEWAY;  route.rt_metric = 0;  if ((err = ioctl(sockfd, SIOCADDRT, &route)) != 0) {    perror("SIOCADDRT failed");    exit(1);  }}

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