这两天看用C获取当前网口的插入网线状态的程序,遇见了这两个不熟悉的结构体,看了头文件中的说明和详细. struct ifreq 这个结构定义在include/net/if.h,用来配置ip地址,激活接口,配置MTU等接口信息的 /* Interface request structure used for socket ioctl's. All interface ioctl's must have parameter definitions which begin with ifr_name
一.struct ifreq结构体 这个结构定义在/usr/include/net/if.h,用来配置和获取ip地址,掩码,MTU等接口信息的. /* Interface request structure used for socket ioctl's. All interface ioctl's must have parameter definitions which begin with ifr_name. The remainder may be interface specific.
route命令的用法:操作或者显示IP路由表route:DESCRIPTION Route manipulates the kernel's IP routing tables. Its primary use is to set up static routes to specific hosts or networks via an interface after it has been configured with the ifconfig(8) pro‐gram. When the a
getifaddrs()和struct ifaddrs的使用,获取本机IP 博客分类: Linux C编程 ifaddrs结构体定义如下: struct ifaddrs { struct ifaddrs *ifa_next; /* Next item in list */ char *ifa_name; /* Name of interface */ unsigned int ifa_flags; /* Flags from SIOCGIFFL
[基础知识说明] 结构原型: /* * Interface request structure used for socket * ioctl's. All interface ioctl's must have parameter * definitions which begin with ifr_name. The * remainder may be interface specific. */ struct ifreq {#define IFHWADDRLEN 6 union {
getifaddrs()和struct ifaddrs的使用,获取本机IP ifaddrs结构体定义如下: struct ifaddrs { struct ifaddrs *ifa_next; /* Next item in list */ char *ifa_name; /* Name of interface */ unsigned int ifa_flags; /* Flags from SIOCGIFFLAGS */ struct sockaddr *ifa_addr; /* Addre