Skip to content

Instantly share code, notes, and snippets.

@akhepcat
Created July 10, 2023 22:31
Show Gist options
  • Save akhepcat/cc225ea747394f4811d9dd9a6220b398 to your computer and use it in GitHub Desktop.
Save akhepcat/cc225ea747394f4811d9dd9a6220b398 to your computer and use it in GitHub Desktop.
send a USB port reset to a USB device
/* usbreset -- send a USB port reset to a USB device */
#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-filename\n");
return 1;
}
filename = argv[1];
fd = open(filename, O_WRONLY);
if (fd < 0) {
perror("Error opening output file");
return 1;
}
printf("Resetting USB device %s\n", filename);
rc = ioctl(fd, USBDEVFS_RESET, 0);
if (rc < 0) {
perror("Error in ioctl");
return 1;
}
printf("Reset successful\n");
close(fd);
return 0;
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment