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authorEric W. Biederman <ebiederm@xmission.com>2015-05-10 05:09:14 +0200
committerEric W. Biederman <ebiederm@xmission.com>2015-07-01 17:36:39 +0200
commitf9bd6733d3f11e24f3949becf277507d422ee1eb (patch)
tree79d33823e26cb5be0af93bae37b2abca3fdaa5dc /ipc
parentfs: Add helper functions for permanently empty directories. (diff)
downloadlinux-f9bd6733d3f11e24f3949becf277507d422ee1eb.tar.xz
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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>
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