[patch 3/15] lsm stacking v0.3: don't default to dummy_##hook

From: serue
Date: Wed Jul 27 2005 - 13:30:12 EST


When stacking multiple LSMs, we do not want hooks which are undefined to
be substituted with the dummy_##hook.

Signed-off-by: Serge Hallyn <serue@xxxxxxxxxx>
--
security.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)

Index: linux-2.6.13-rc3/security/security.c
===================================================================
--- linux-2.6.13-rc3.orig/security/security.c 2005-07-18 15:49:52.000000000 -0500
+++ linux-2.6.13-rc3/security/security.c 2005-07-18 15:51:40.000000000 -0500
@@ -81,15 +81,15 @@ int __init security_init(void)
*/
int register_security(struct security_operations *ops)
{
+ if (security_ops != &dummy_security_ops)
+ return -EAGAIN;
+
if (verify(ops)) {
printk(KERN_DEBUG "%s could not verify "
"security_operations structure.\n", __FUNCTION__);
return -EINVAL;
}

- if (security_ops != &dummy_security_ops)
- return -EAGAIN;
-
security_ops = ops;

return 0;
@@ -134,9 +134,9 @@ int unregister_security(struct security_
*/
int mod_reg_security(const char *name, struct security_operations *ops)
{
- if (verify(ops)) {
- printk(KERN_INFO "%s could not verify "
- "security operations.\n", __FUNCTION__);
+ if (!ops) {
+ printk(KERN_INFO "%s received NULL security operations",
+ __FUNCTION__);
return -EINVAL;
}

-
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