Eric W. Biederman f9bd6733d3 sysctl: Allow creating permanently empty directories that serve as mountpoints. ...

Add a magic sysctl table sysctl_mount_point that when used to
create a directory forces that directory to be permanently empty.

Update the code to use make_empty_dir_inode when accessing permanently
empty directories.

Update the code to not allow adding to permanently empty directories.

Update /proc/sys/fs/binfmt_misc to be a permanently empty directory.

Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

2015-07-01 10:36:39 -05:00

6.7 KiB

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