hujianyang 6be4506e34 ovl: check lowerdir amount for non-upper mount ... Recently multi-lower layer mount support allow upperdir and workdir to be omitted, then cause overlayfs can be mount with only one lowerdir directory. This action make no sense and have potential risk. This patch check the total number of lower directories to prevent mounting overlayfs with only one directory. Also, an error message is added to indicate lower directories exceed OVL_MAX_STACK limit. Signed-off-by: hujianyang <hujianyang@huawei.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>		2015-03-18 10:29:47 +01:00
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copy_up.c	ovl: Cleanup redundant blank lines	2014-12-13 00:59:52 +01:00
dir.c	VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)	2015-02-22 11:38:41 -05:00
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	Merge branch 'overlayfs-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs into for-next	2015-02-20 04:58:52 -05:00
super.c	ovl: check lowerdir amount for non-upper mount	2015-03-18 10:29:47 +01:00