Eric W. Biederman e51db73532 userns: Better restrictions on when proc and sysfs can be mounted ... Rely on the fact that another flavor of the filesystem is already mounted and do not rely on state in the user namespace. Verify that the mounted filesystem is not covered in any significant way. I would love to verify that the previously mounted filesystem has no mounts on top but there are at least the directories /proc/sys/fs/binfmt_misc and /sys/fs/cgroup/ that exist explicitly for other filesystems to mount on top of. Refactor the test into a function named fs_fully_visible and call that function from the mount routines of proc and sysfs. This makes this test local to the filesystems involved and the results current of when the mounts take place, removing a weird threading of the user namespace, the mount namespace and the filesystems themselves. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>		2013-08-26 19:17:03 -07:00
..
bin.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
dir.c	Driver core patches for 3.11-rc1	2013-07-02 11:44:19 -07:00
file.c	sysfs_notify is only possible on file attributes	2013-06-07 16:05:50 -07:00
group.c	sysfs: Functions for adding/removing symlinks to/from attribute groups	2013-01-25 21:51:13 +01:00
inode.c	sysfs: kill sysfs_sb declaration in fs/sysfs/inode.c.	2013-05-17 10:26:08 -07:00
Kconfig	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
Makefile
mount.c	userns: Better restrictions on when proc and sysfs can be mounted	2013-08-26 19:17:03 -07:00
symlink.c	sysfs: Functions for adding/removing symlinks to/from attribute groups	2013-01-25 21:51:13 +01:00
sysfs.h	sysfs: Functions for adding/removing symlinks to/from attribute groups	2013-01-25 21:51:13 +01:00