Commit be35f037 authored Mar 09, 2017 by Daniel Rosenberg

ANDROID: sdcardfs: copy lower inode attributes in ->ioctl



Adapted from wrapfs
commit fbc9c6f83ea6 ("Wrapfs: copy lower inode attributes in ->ioctl")
commit e97d8e26cc9e ("Wrapfs: use file_inode helper")

Some ioctls (e.g., EXT2_IOC_SETFLAGS) can change inode attributes, so copy
them from lower inode.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 35766959
Change-Id: I0f12684b9dbd4088b4a622c7ea9c03087f40e572

parent a5e674ac

fs/sdcardfs/file.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -113,6 +113,10 @@ static long sdcardfs_unlocked_ioctl(struct file *file, unsigned int cmd,
		if (lower_file->f_op->unlocked_ioctl)
		err = lower_file->f_op->unlocked_ioctl(lower_file, cmd, arg);

		/* some ioctls can change inode attributes (EXT2_IOC_SETFLAGS) */
		if (!err)
		sdcardfs_copy_and_fix_attrs(file_inode(file),
		file_inode(lower_file));
		out:
		return err;
		}