linux-kernel - [PATCH v6 13/20] evm: add evm_inode_post

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Message-Id: <1307017423-15093-14-git-send-email-zohar@linux.vnet.ibm.com>
Date:	Thu,  2 Jun 2011 08:23:36 -0400
From:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:	linux-security-module@...r.kernel.org
Cc:	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	James Morris <jmorris@...ei.org>,
	David Safford <safford@...son.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg KH <greg@...ah.com>,
	Dmitry Kasatkin <dmitry.s.kasatkin@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-mtd@...ts.infradead.org, Mimi Zohar <zohar@...ibm.com>
Subject: [PATCH v6 13/20] evm: add evm_inode_post_init call in jffs2

After creating the initial LSM security extended attribute, call
evm_inode_post_init_security() to create the 'security.evm'
extended attribute.

Signed-off-by: Mimi Zohar <zohar@...ibm.com>
---
 fs/jffs2/security.c |   26 +++++++++++++++++++-------
 1 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c
index cfeb716..6847769 100644
--- a/fs/jffs2/security.c
+++ b/fs/jffs2/security.c
@@ -20,6 +20,7 @@
 #include <linux/xattr.h>
 #include <linux/mtd/mtd.h>
 #include <linux/security.h>
+#include <linux/evm.h>
 #include "nodelist.h"
 
 /* ---- Initial Security Label Attachment -------------- */
@@ -28,19 +29,30 @@ int jffs2_init_security(struct inode *inode, struct inode *dir,
 {
 	int rc;
 	size_t len;
-	void *value;
-	char *name;
+	struct xattr lsm_xattr;
+	struct xattr evm_xattr;
 
-	rc = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
+	rc = security_inode_init_security(inode, dir, qstr, &lsm_xattr.name,
+					  &lsm_xattr.value,
+					  &lsm_xattr.value_len);
 	if (rc) {
 		if (rc == -EOPNOTSUPP)
 			return 0;
 		return rc;
 	}
-	rc = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, name, value, len, 0);
-
-	kfree(name);
-	kfree(value);
+	rc = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, lsm_xattr.name,
+			       lsm_xattr.value, lsm_xattr.value_len, 0);
+	if (rc)
+		goto out;
+	rc = evm_inode_post_init_security(inode, &lsm_xattr, &evm_xattr);
+	if (err)
+		goto out;
+	rc = do_jffs2_setxattr(inode, JFFS2_XPREFIX_SECURITY, evm_xattr.name,
+			       evm_xattr.value, evm_xattr.value_len, 0);
+	kfree(evm_xattr.value);
+out:
+	kfree(lsm_xattr.name);
+	kfree(lsm_xattr.value);
 	return rc;
 }
 
-- 
1.7.3.4

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