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Message-Id: <1332356057-3356-2-git-send-email-zohar@linux.vnet.ibm.com>
Date: Wed, 21 Mar 2012 14:54:06 -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,
Al Viro <viro@...IV.linux.org.uk>,
David Safford <safford@...ux.vnet.ibm.com>,
Dmitry Kasatkin <dmitry.kasatkin@...el.com>,
Mimi Zohar <zohar@...ibm.com>,
Dmitry Kasatkin <dmitry.kasatkin@...ia.com>
Subject: [PATCH v3 01/12] vfs: extend vfs_removexattr locking
This patch takes the i_mutex lock before security_inode_removexattr(),
instead of after, in preparation of calling ima_inode_removexattr().
Signed-off-by: Mimi Zohar <zohar@...ibm.com>
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@...ia.com>
---
fs/xattr.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/xattr.c b/fs/xattr.c
index 82f4337..6112c92 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -294,11 +294,13 @@ vfs_removexattr(struct dentry *dentry, const char *name)
if (error)
return error;
+ mutex_lock(&inode->i_mutex);
error = security_inode_removexattr(dentry, name);
- if (error)
+ if (error) {
+ mutex_unlock(&inode->i_mutex);
return error;
+ }
- mutex_lock(&inode->i_mutex);
error = inode->i_op->removexattr(dentry, name);
mutex_unlock(&inode->i_mutex);
--
1.7.6.5
--
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