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- /* Found at https://www.linuxquestions.org/questions/linux-hardware-18/how-to-unclaim-usb-device-558138/#post3406986 */
- #include <stdio.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <fcntl.h>
- #include <linux/ioctl.h>
- #include <linux/usbdevice_fs.h>
-
- int main(int argc, char**argv)
- {
- struct usbdevfs_ioctl command;
- int ret;
- int fd;
- int i;
- if (argc>1) {
- fd = open(argv[1],O_RDWR);
- if (fd<1){
- perror("unable to open file");
- return 1;
- }
- for (i=0;i<255;i++){ // hack: should fetch how many interface there is.
- command.ifno = i;
- command.ioctl_code = USBDEVFS_DISCONNECT;
- command.data = NULL;
- ret = ioctl(fd, USBDEVFS_IOCTL, &command);
- if(ret!=-1)
- printf("un claimed interface %d %d\n",i,ret);
- }
- } else {
- printf ("usage: %s /dev/bus/usb/BUS/DEVICE\n",argv[0]);
- printf("Release all interfaces of this usb device for usage in virtualisation\n");
- }
- }
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