linux-kernel - [PATCH] slim: handle failure to register

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Date:	Wed, 20 Sep 2006 09:48:43 -0700
From:	Kylene Jo Hall <kjhall@...ibm.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	akpm@...l.org, Serge Hallyn <sergeh@...ibm.com>,
	Mimi Zohar <zohar@...ibm.com>,
	Dave Safford <safford@...ibm.com>, sds@...ho.nsa.gov
Subject: [PATCH] slim: handle failure to register

Thanks to Stephen Smalley for pointing out that we need to securely
handle a failure to register with the LSM security hooks.  This patch
adds a panic in the event that the module is unable to register.

Signed-off-by: Kylene Hall <kjhall@...ibm.com>
Signed-off-by: Mimi Zohar <zohar@...ibm.com>
---
security/slim/slm_main.c |    6 +++++-
1 files changed, 5 insertions(+), 1 deletion(-) 
--- linux-2.6.18-rc6-orig/security/slim/slm_main.c	2006-09-18 16:41:51.000000000 -0500
+++ linux-2.6.18-rc6/security/slim/slm_main.c	2006-09-19 12:48:42.000000000 -0500
@@ -1644,9 +1644,13 @@ int slim_enabled = 1;
 #endif
 static int __init init_slm(void)
 {
+	int rc;
 	if (!slim_enabled)
 		return 0;
 	slm_task_init_alloc_security(current);
-	return register_security(&slm_security_ops);
+	rc = register_security(&slm_security_ops);
+	if (rc != 0)
+		panic("SLIM: Unable to register with kernel\n");
+	return rc;
 }
 security_initcall(init_slm);


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