selinux: export validatetrans decisions
Make validatetrans decisions available through selinuxfs.
"/validatetrans" is added to selinuxfs for this purpose.
This functionality is needed by file system servers
implemented in userspace or kernelspace without the VFS
layer.
Writing "$oldcontext $newcontext $tclass $taskcontext"
to /validatetrans is expected to return 0 if the transition
is allowed and -EPERM otherwise.
Signed-off-by: Andrew Perepechko <anserper@ya.ru>
CC: andrew.perepechko@seagate.com
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <pmoore@redhat.com>
diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h
index 223e9fd..38feb55 100644
--- a/security/selinux/include/security.h
+++ b/security/selinux/include/security.h
@@ -187,6 +187,9 @@
int security_validate_transition(u32 oldsid, u32 newsid, u32 tasksid,
u16 tclass);
+int security_validate_transition_user(u32 oldsid, u32 newsid, u32 tasksid,
+ u16 tclass);
+
int security_bounded_transition(u32 oldsid, u32 newsid);
int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid);