int ifr_ifindex; int ifr_metric; int ifr_mtu; struct ifmap ifr_map; char ifr_slave[IFNAMSIZ]; char ifr_newname[IFNAMSIZ]; __caddr_t ifr_data; }; }; ``` 在上面的代码中,struct ifreq结构体包含了一个用于存储接口名的字符数组ifreq_name,和一个union,用于存储各种不同类型的接口属性。通...
structifreq ifr; sockfd=socket(AF_INET,SOCK_DGRAM,0); strncpy(ifr.ifr_name,"eth0",IFNAMSIZ-1);// 替换为你要查询的接口名 ioctl(sockfd,SIOCGIFADDR,&ifr);// 获取地址 printf("IP Address of %s: %s\n", ifr.ifr_name, inet_ntoa(((structsockaddr_in*)&ifr.ifr_addr)->sin_addr)); clos...
#define ifr_settings ifr_ifru.ifru_settings /* Device/proto settings*/ ifr_name 标识了某一接口。 可以通过ioctl获取该接口的信息。如: ioctl(Sock,SIOCGIFNETMASK,&IfReq);//获取网络接口地址掩码 该代码需要先对IfReq->ifr_name赋值,然后获取与IfReq->ifr_name向匹配的网络接口 的地址掩码 struct ifconf ...
51CTO博客已为您找到关于struct ifreq 详解的相关内容,包含IT学习相关文档代码介绍、相关教程视频课程,以及struct ifreq 详解问答内容。更多struct ifreq 详解相关解答可以来51CTO博客参与分享和学习,帮助广大IT技术人实现成长和进步。
1.struct ifreq { char ifr_name[IFNAMSIZ]; union { struct sockaddr ifru_addr; struct sockaddr ifru_dstaddr; struct sockaddr ifru_broadaddr; struct sockaddr ifru_netmask; struct sockaddr ifru_hwaddr; short int ifru_flags; int ifru_ivalue; int ifru_mtu; struct ifmap ifru_map; char ifru_sla...
1.struct ifreq { char ifr_name[IFNAMSIZ]; union { struct sockaddr ifru_addr; struct sockaddr ifru_dstaddr; struct sockaddr ifru_broadaddr; struct sockaddr ifru_netmask; struct sockaddr ifru_hwaddr; short int ifru_flags; int ifru_ivalue; ...
在这个示例中,我们首先包含了<net/if.h>头文件来定义struct ifreq,然后创建了一个socket,并设置了ifr_name字段来指定要查询的网络接口名称。接着,我们使用ioctl系统调用来获取接口的信息,并打印出接口的状态。最后,我们关闭了socket。 如果你已经按照上述步骤操作,但仍然遇到“variable has incomplete type '...
#include <net/if.h> struct ifreq ifr; int fd = socket(AF_INET, SOCK_DGRAM, 0); if (fd < 0) { perror("fd socket fails."); return -1; } memset(&ifr, 0x00, sizeof(ifr)); strncpy(ifr.ifr_name, ifName, sizeof(ifr.ifr_name)-1); if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0...
Struct ifreq接口 Struct ifreq{ Char ifr_name[IFNAMSIZ]; Union{ Struct sockaddr ifru_addr; Struct sockaddr ifru_dstaddr; Struct sockaddr ifru_broadaddr; Struct sockaddr ifru_netmask; Struct sockaddr ifru_hwaddr; Short ifru_flags; Int ifru_metric; Caddr_t ifru_data; }ifr_ifru; }; #define ...
structifreq { charifr_name[IFNAMSIZ]; union { structsockaddr ifru_addr; structsockaddr ifru_dstaddr; structsockaddr ifru_broadaddr; shortifru_flags; intifru_metric; caddr_t ifru_data; } ifr_ifru; }; #defineifr_addr ifr_ifru.ifru_addr ...