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@xxxxxxxxx>
---
fs/jffs2/xattr_trusted.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/fs/jffs2/xattr_trusted.c b/fs/jffs2/xattr_trusted.c
index 3e5a5e3..405121c 100644
--- a/fs/jffs2/xattr_trusted.c
+++ b/fs/jffs2/xattr_trusted.c
@@ -39,6 +39,9 @@ static size_t jffs2_trusted_listxattr(struct dentry *dentry, char *list,
{
size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1;
+ if (!capable(CAP_SYS_ADMIN))
+ return 0;
+
if (list && retlen<=list_size) {
strcpy(list, XATTR_TRUSTED_PREFIX);
strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name);
--
1.6.3.3
--
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