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From: James Morris on 2 Mar 2010 03:10
Ensure that trusted xattrs are not returned to unprivileged users
via listxattr, in keeping with several other implmentations, such
as ext3.

Signed-off-by: James Morris <jmorris(a)namei.org>
---
fs/ocfs2/xattr.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 8fc6fb0..da98448 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -7077,6 +7077,9 @@ static size_t ocfs2_xattr_trusted_list(struct dentry *dentry, char *list,
const size_t prefix_len = XATTR_TRUSTED_PREFIX_LEN;
const size_t total_len = prefix_len + name_len + 1;

+ if (!capable(CAP_SYS_ADMIN))
+ return 0;
+
if (list && total_len <= list_size) {
memcpy(list, XATTR_TRUSTED_PREFIX, prefix_len);
memcpy(list + prefix_len, name, name_len);
--
1.6.3.3

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