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| author | Eric W. Biederman <ebiederm@xmission.com> | 2015-05-09 22:09:14 -0500 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2015-07-01 10:36:39 -0500 |
| commit | f9bd6733d3f11e24f3949becf277507d422ee1eb (patch) | |
| tree | 79d33823e26cb5be0af93bae37b2abca3fdaa5dc /include/linux/sysctl.h | |
| parent | fbabfd0f4ee2e8847bf56edf481249ad1bb8c44d (diff) | |
| download | lwn-f9bd6733d3f11e24f3949becf277507d422ee1eb.tar.gz lwn-f9bd6733d3f11e24f3949becf277507d422ee1eb.zip | |
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>
Diffstat (limited to 'include/linux/sysctl.h')
| -rw-r--r-- | include/linux/sysctl.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 795d5fea5697..fa7bc29925c9 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -188,6 +188,9 @@ struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path, void unregister_sysctl_table(struct ctl_table_header * table); extern int sysctl_init(void); + +extern struct ctl_table sysctl_mount_point[]; + #else /* CONFIG_SYSCTL */ static inline struct ctl_table_header *register_sysctl_table(struct ctl_table * table) { |