请使用netlink获取usb设备插拔事件，并提取出设备类型，名字，pid vid 文件路径等信息，请用C语言写出程序

好的，以下是一个简单的C程序，使用netlink获取usb设备插拔事件，并提取设备类型，名字，pid vid 文件路径等信息：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/usb/ch9.h>

#define UEVENT_BUFFER_SIZE 2048

int main()
{
    struct sockaddr_nl nls;
    struct msghdr msg;
    struct iovec iov;
    char buffer[UEVENT_BUFFER_SIZE];
    int ret, fd, len;
    struct nlmsghdr *nh;
    struct udev_device *dev;
    char *action, *subsystem, *devtype, *devname, *pid, *vid, *path;

    memset(&nls, 0, sizeof(nls));
    nls.nl_family = AF_NETLINK;
    nls.nl_pid = getpid();
    nls.nl_groups = -1;

    if ((fd = socket(PF_NETLINK, SOCK_RAW, NETLINK_KOBJECT_UEVENT)) == -1) {
        perror("socket");
        exit(EXIT_FAILURE);
    }

    if (bind(fd, (struct sockaddr *)&nls, sizeof(nls)) == -1) {
        perror("bind");
        exit(EXIT_FAILURE);
    }

    memset(&msg, 0, sizeof(struct msghdr));
    iov.iov_base = buffer;
    iov.iov_len = sizeof(buffer);
    msg.msg_name = (void *)&nls;
    msg.msg_namelen = sizeof(nls);
    msg.msg_iov = &iov;
    msg.msg_iovlen = 1;

    while (1) {
        len = recvmsg(fd, &msg, 0);
        if (len == -1) {
            perror("recvmsg");
            exit(EXIT_FAILURE);
        }
        nh = (struct nlmsghdr *)buffer;
        while (NLMSG_OK(nh, len)) {
            if (nh->nlmsg_type == NLMSG_DONE)
                break;
            else if (nh->nlmsg_type == NLMSG_ERROR) {
                perror("NLMSG_ERROR");
                exit(EXIT_FAILURE);
            }
            else if (nh->nlmsg_type == UDEV_MONITOR) {
                action = strstr(NLMSG_DATA(nh), "ACTION=");
                if (action != NULL) {
                    subsystem = strstr(NLMSG_DATA(nh), "SUBSYSTEM=");
                    devtype = strstr(NLMSG_DATA(nh), "DEVTYPE=");
                    devname = strstr(NLMSG_DATA(nh), "DEVNAME=");
                    pid = strstr(NLMSG_DATA(nh), "ID_VENDOR_ID=");
                    vid = strstr(NLMSG_DATA(nh), "ID_PRODUCT_ID=");
                    path = strstr(NLMSG_DATA(nh), "DEVPATH=");
                    if (action != NULL && subsystem != NULL && devtype != NULL &&
                        devname != NULL && pid != NULL && vid != NULL && path != NULL) {
                        printf("Action: %s\n", action + strlen("ACTION="));
                        printf("Subsystem: %s\n", subsystem + strlen("SUBSYSTEM="));
                        printf("Devtype: %s\n", devtype + strlen("DEVTYPE="));
                        printf("Devname: %s\n", devname + strlen("DEVNAME="));
                        printf("Pid: %s\n", pid + strlen("ID_VENDOR_ID="));
                        printf("Vid: %s\n", vid + strlen("ID_PRODUCT_ID="));
                        printf("Path: %s\n", path + strlen("DEVPATH="));
                        printf("\n");
                    }
                }
            }
            nh = NLMSG_NEXT(nh, len);
        }
    }

    close(fd);

    return 0;
}

这个程序使用了netlink套接字来接收内核发送的消息，然后解析消息中的信息，提取出usb设备的相关信息，包括设备类型，名字，pid vid 文件路径等信息。