hujianyang a425c037f3 ovl: Fix opaque regression in ovl_lookup ...

Current multi-layer support overlayfs has a regression in
.lookup(). If there is a directory in upperdir and a regular
file has same name in lowerdir in a merged directory, lower
file is hidden and upper directory is set to opaque in former
case. But it is changed in present code.

In lowerdir lookup path, if a found inode is not directory,
the type checking of previous inode is missing. This inode
will be copied to the lowerstack of ovl_entry directly.

That will lead to several wrong conditions, for example,
the reading of the directory in upperdir may return an error
like:

   ls: reading directory .: Not a directory

This patch makes the lowerdir lookup path check the opaque
for non-directory file too.

Signed-off-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

2015-01-08 14:47:20 +01:00

..

copy_up.c

ovl: Cleanup redundant blank lines

2014-12-13 00:59:52 +01:00

dir.c

ovl: Use macros to present ovl_xattr

2014-12-13 00:59:52 +01:00

inode.c

ovl: Use macros to present ovl_xattr

2014-12-13 00:59:52 +01:00

Kconfig

ovl: rename filesystem type to "overlay"

2014-11-20 16:39:59 +01:00

Makefile

ovl: rename filesystem type to "overlay"

2014-11-20 16:39:59 +01:00

overlayfs.h

ovl: Use macros to present ovl_xattr

2014-12-13 00:59:52 +01:00

readdir.c

ovl: check whiteout on lowest layer as well

2014-12-13 00:59:45 +01:00

super.c

ovl: Fix opaque regression in ovl_lookup

2015-01-08 14:47:20 +01:00