introduce new LSM hooks where vfsmount is available.

Add new LSM hooks for path-based checks.  Call them on directory-modifying
operations at the points where we still know the vfsmount involved.

Signed-off-by: Kentaro Takeda <takedakn@nttdata.co.jp>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Toshiharu Harada <haradats@nttdata.co.jp>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 9 insertions, 0 deletions

diff --git a/security/Kconfig b/security/Kconfig
index d9f47ce7e207..9438535d7fd0 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -81,6 +81,15 @@ config SECURITY_NETWORK_XFRM
           IPSec.
           If you are unsure how to answer this question, answer N.
 
+config SECURITY_PATH
+        bool "Security hooks for pathname based access control"
+        depends on SECURITY
+        help
+          This enables the security hooks for pathname based access control.
+          If enabled, a security module can use these hooks to
+          implement pathname based access controls.
+          If you are unsure how to answer this question, answer N.
+
 config SECURITY_FILE_CAPABILITIES
         bool "File POSIX Capabilities"
         default n