TOMOYO: Don't create securityfs entries unless registered.

TOMOYO should not create /sys/kernel/security/tomoyo/ interface unless
TOMOYO is registered.

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: James Morris <jmorris@namei.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index 8bedfb1992e5..92cea656ad21 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -2177,6 +2177,10 @@ static int __init tomoyo_initerface_init(void)
 {
         struct dentry *tomoyo_dir;
 
+        /* Don't create securityfs entries unless registered. */
+        if (current_cred()->security != &tomoyo_kernel_domain)
+                return 0;
+
         tomoyo_dir = securityfs_create_dir("tomoyo", NULL);
         tomoyo_create_entry("domain_policy",    0600, tomoyo_dir,
                             TOMOYO_DOMAINPOLICY);