usbreset

usbreset

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

// send reset to USB device
int main(int argc, char **argv)
{
    if (argc != 2)
    {
        fprintf(stderr, "usage: usbreset /dev/bus/usb/<bus>/<dev>\n");
        return 1;
    }
    const char* filename = argv[1];

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

    printf("Resetting USB device %s\n", filename);
    int rc = ioctl(fd, USBDEVFS_RESET, 0);
    if (rc < 0)
    {
        perror("Error in ioctl");
        return 1;
    }
    printf("Reset successful!\n");

    close(fd);
    return 0;
}