Miklos Szeredi 9c630ebefe ovl: simplify permission checking ... The fact that we always do permission checking on the overlay inode and clear MAY_WRITE for checking access to the lower inode allows cruft to be removed from ovl_permission(). 1) "default_permissions" option effectively did generic_permission() on the overlay inode with i_mode, i_uid and i_gid updated from underlying filesystem. This is what we do by default now. It did the update using vfs_getattr() but that's only needed if the underlying filesystem can change (which is not allowed). We may later introduce a "paranoia_mode" that verifies that mode/uid/gid are not changed. 2) splitting out the IS_RDONLY() check from inode_permission() also becomes unnecessary once we remove the MAY_WRITE from the lower inode check. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>		2016-07-29 12:05:23 +02:00
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copy_up.c	ovl: override creds with the ones from the superblock mounter	2016-05-27 08:55:26 +02:00
dir.c	ovl: do operations on underlying file system in mounter's context	2016-07-29 12:05:23 +02:00
inode.c	ovl: simplify permission checking	2016-07-29 12:05:23 +02:00
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: simplify permission checking	2016-07-29 12:05:23 +02:00
readdir.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-05-27 17:14:05 -07:00
super.c	ovl: simplify permission checking	2016-07-29 12:05:23 +02:00