uevent的基本使用1

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <linux/netlink.h>
#include <sys/types.h>
#include <unistd.h>


int main(int argc,char *argv[])
{
    int netfd;
    struct sockaddr_nl srcaddr={0};
    int ret;
    char buff[1024]={0};


    netfd = socket(AF_NETLINK,SOCK_RAW,NETLINK_KOBJECT_UEVENT);

    if(netfd <= 0)
    {
        printf("error\n");
        return -1;
    }

    srcaddr.nl_family = AF_NETLINK;
    srcaddr.nl_groups = 1;
    srcaddr.nl_pid = getpid();

    if( bind(netfd,(struct sockaddr *)&srcaddr,sizeof(srcaddr)) != 0 )
    {
        printf("call bind error\n");
        close(netfd);
        return -1;
    }
	while(1)
    {
        ret = recv(netfd,buff,1024,0);
        if(ret <= 0)
        {
                printf("ret error\n");

                continue;
        }

        printf("%s\n",buff);
    }



    close(netfd);

    return 0;
}