SELinux: remove redundant exports

Remove the following exported SELinux interfaces:
selinux_get_inode_sid(inode, sid)
selinux_get_ipc_sid(ipcp, sid)
selinux_get_task_sid(tsk, sid)
selinux_sid_to_string(sid, ctx, len)

They can be substitued with the following generic equivalents
respectively:
new LSM hook, inode_getsecid(inode, secid)
new LSM hook, ipc_getsecid*(ipcp, secid)
LSM hook, task_getsecid(tsk, secid)
LSM hook, sid_to_secctx(sid, ctx, len)

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Acked-by: James Morris <jmorris@namei.org>
Reviewed-by: Paul Moore <paul.moore@hp.com>

1 files changed, 0 insertions, 42 deletions

diff --git a/security/selinux/exports.c b/security/selinux/exports.c
index 87d2bb3ea355..64af2d3409ef 100644
--- a/security/selinux/exports.c
+++ b/security/selinux/exports.c
@@ -25,48 +25,6 @@
 /* SECMARK reference count */
 extern atomic_t selinux_secmark_refcount;
 
-int selinux_sid_to_string(u32 sid, char **ctx, u32 *ctxlen)
-{
-        if (selinux_enabled)
-                return security_sid_to_context(sid, ctx, ctxlen);
-        else {
-                *ctx = NULL;
-                *ctxlen = 0;
-        }
-
-        return 0;
-}
-
-void selinux_get_inode_sid(const struct inode *inode, u32 *sid)
-{
-        if (selinux_enabled) {
-                struct inode_security_struct *isec = inode->i_security;
-                *sid = isec->sid;
-                return;
-        }
-        *sid = 0;
-}
-
-void selinux_get_ipc_sid(const struct kern_ipc_perm *ipcp, u32 *sid)
-{
-        if (selinux_enabled) {
-                struct ipc_security_struct *isec = ipcp->security;
-                *sid = isec->sid;
-                return;
-        }
-        *sid = 0;
-}
-
-void selinux_get_task_sid(struct task_struct *tsk, u32 *sid)
-{
-        if (selinux_enabled) {
-                struct task_security_struct *tsec = tsk->security;
-                *sid = tsec->sid;
-                return;
-        }
-        *sid = 0;
-}
-
 int selinux_string_to_sid(char *str, u32 *sid)
 {
         if (selinux_enabled)