Miklos Szeredi 11f3710417 ovl: verify upper dentry before unlink and rename ... Unlink and rename in overlayfs checked the upper dentry for staleness by verifying upper->d_parent against upperdir. However the dentry can go stale also by being unhashed, for example. Expand the verification to actually look up the name again (under parent lock) and check if it matches the upper dentry. This matches what the VFS does before passing the dentry to filesytem's unlink/rename methods, which excludes any inconsistency caused by overlayfs. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>		2016-03-21 17:31:44 +01:00
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copy_up.c	wrappers for ->i_mutex access	2016-01-22 18:04:28 -05:00
dir.c	ovl: verify upper dentry before unlink and rename	2016-03-21 17:31:44 +01:00
inode.c	ovl: copy new uid/gid into overlayfs runtime inode	2016-03-03 17:17:46 +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	Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs	2016-01-21 12:20:46 -08:00
readdir.c	wrappers for ->i_mutex access	2016-01-22 18:04:28 -05:00
super.c	ovl: ignore lower entries when checking purity of non-directory entries	2016-03-03 17:17:45 +01:00