linux-kernel - [Patch -mm 1/1] SLIM LSM getprocattr hook API change

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Date:	Fri, 23 Mar 2007 12:52:08 -0400
From:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	safford@...son.ibm.com, serue@...ux.vnet.ibm.com,
	kjhall@...ux.vnet.ibm.com, zohar@...ibm.com, akpm@...l.org
Subject: [Patch -mm 1/1] SLIM LSM getprocattr hook API change

This patch addresses the 2.6.21-rc4 LSM getprocattr hook API change.

signed-off-by: Mimi Zohar <zohar@...ibm.com>
---
Index: linux-2.6.21-rc4-mm1/security/slim/slm_main.c
===================================================================
--- linux-2.6.21-rc4-mm1.orig/security/slim/slm_main.c
+++ linux-2.6.21-rc4-mm1/security/slim/slm_main.c
@@ -1269,25 +1269,29 @@ static int slm_setprocattr(struct task_s
 }
 
 static int slm_getprocattr(struct task_struct *tsk,
-				  char *name, void *value, size_t size)
+				  char *name, char **value)
 {
 	struct slm_tsec_data *tsec = tsk->security;
 	size_t len = 0;
+	int buf_size = 31;
+	char buf[buf_size];
 
 	if (is_kernel_thread(tsk))
-		len = snprintf(value, size, "KERNEL");
+		len = snprintf(buf, buf_size, "KERNEL");
 	else {
 		spin_lock(&tsec->lock);
 		if (tsec->iac_wx != tsec->iac_r)
-			len = snprintf(value, size, "GUARD wx:%s r:%s",
+			len = snprintf(buf, buf_size, "GUARD wx:%s r:%s",
 				       slm_iac_str[tsec->iac_wx],
 				       slm_iac_str[tsec->iac_r]);
 		else
-			len = snprintf(value, size, "%s",
+			len = snprintf(buf, buf_size, "%s",
 				       slm_iac_str[tsec->iac_wx]);
 		spin_unlock(&tsec->lock);
 	}
-	return min(len, size);
+	*value = kzalloc(len, GFP_KERNEL);
+	memcpy(*value, buf, len);
+	return len;
 }
 
 /*



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