1 files changed, 25 insertions, 2 deletions

diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 016d0249294f..bf5ae883b1bd 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -258,7 +258,7 @@ setversion_out:
                 if (me.moved_len > 0)
                         file_remove_suid(donor_filp);
 
-                if (copy_to_user((struct move_extent __user *)arg, 
+                if (copy_to_user((struct move_extent __user *)arg,
                                  &me, sizeof(me)))
                         err = -EFAULT;
 mext_out:
@@ -373,7 +373,30 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
         case EXT4_IOC32_SETRSVSZ:
                 cmd = EXT4_IOC_SETRSVSZ;
                 break;
-        case EXT4_IOC_GROUP_ADD:
+        case EXT4_IOC32_GROUP_ADD: {
+                struct compat_ext4_new_group_input __user *uinput;
+                struct ext4_new_group_input input;
+                mm_segment_t old_fs;
+                int err;
+
+                uinput = compat_ptr(arg);
+                err = get_user(input.group, &uinput->group);
+                err |= get_user(input.block_bitmap, &uinput->block_bitmap);
+                err |= get_user(input.inode_bitmap, &uinput->inode_bitmap);
+                err |= get_user(input.inode_table, &uinput->inode_table);
+                err |= get_user(input.blocks_count, &uinput->blocks_count);
+                err |= get_user(input.reserved_blocks,
+                                &uinput->reserved_blocks);
+                if (err)
+                        return -EFAULT;
+                old_fs = get_fs();
+                set_fs(KERNEL_DS);
+                err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD,
+                                 (unsigned long) &input);
+                set_fs(old_fs);
+                return err;
+        }
+        case EXT4_IOC_MOVE_EXT:
                 break;
         default:
                 return -ENOIOCTLCMD;