Linux下复位USB设备

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>

#include <linux/usbdevice_fs.h>


int main(int argc,char **argv)
{
    const char *filename;
    int fd;
    int rc;

    if (argc != 2) {
        fprintf(stderr,"Usage: usbreset device-filenamen");
        return 1;
    }
    filename = argv[1];

    fd = open(filename,O_WRONLY);
    if (fd < 0) {
        perror("Error opening output file");
        return 1;
    }

    printf("Resetting USB device %sn",filename);
    rc = ioctl(fd,USBDEVFS_RESET,0);
    if (rc < 0) {
        perror("Error in ioctl");
        return 1;
    }
    printf("Reset successfuln");

    close(fd);
    return 0;
}