+#ifdef CONFIG_COMPAT
+#define VFAT_IOCTL_READDIR_BOTH32 _IOR('r', 1, struct compat_dirent[2])
+#define VFAT_IOCTL_READDIR_SHORT32 _IOR('r', 2, struct compat_dirent[2])
+
+static long fat_compat_put_dirent32(struct dirent *d,
+ struct compat_dirent __user *d32)
+{
+ if (!access_ok(VERIFY_WRITE, d32, sizeof(struct compat_dirent)))
+ return -EFAULT;
+
+ __put_user(d->d_ino, &d32->d_ino);
+ __put_user(d->d_off, &d32->d_off);
+ __put_user(d->d_reclen, &d32->d_reclen);
+ if (__copy_to_user(d32->d_name, d->d_name, d->d_reclen))
+ return -EFAULT;
+
+ return 0;
+}
+
+static long fat_compat_dir_ioctl(struct file *file, unsigned cmd,
+ unsigned long arg)
+{
+ struct compat_dirent __user *p = compat_ptr(arg);
+ int ret;
+ mm_segment_t oldfs = get_fs();
+ struct dirent d[2];
+
+ switch (cmd) {
+ case VFAT_IOCTL_READDIR_BOTH32:
+ cmd = VFAT_IOCTL_READDIR_BOTH;
+ break;
+ case VFAT_IOCTL_READDIR_SHORT32:
+ cmd = VFAT_IOCTL_READDIR_SHORT;
+ break;
+ default:
+ return -ENOIOCTLCMD;
+ }
+
+ set_fs(KERNEL_DS);
+ lock_kernel();
+ ret = fat_dir_ioctl(file->f_path.dentry->d_inode, file,
+ cmd, (unsigned long) &d);
+ unlock_kernel();
+ set_fs(oldfs);
+ if (ret >= 0) {
+ ret |= fat_compat_put_dirent32(&d[0], p);
+ ret |= fat_compat_put_dirent32(&d[1], p + 1);
+ }
+ return ret;
+}
+#endif /* CONFIG_COMPAT */
+
+const struct file_operations fat_dir_operations = {