From 2926e4297053c735ab65450192dfba32a4f47fa9 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 24 Aug 2021 14:48:58 +0300 Subject: [Backport 2926e4297053] src: fix an error code in ntfs_get_acl_ex() The ntfs_get_ea() function returns negative error codes or on success it returns the length. In the original code a zero length return was treated as -ENODATA and results in a NULL return. But it should be treated as an invalid length and result in an PTR_ERR(-EINVAL) return. Fixes: be71b5cba2e6 ("src: Add attrib operations") Signed-off-by: Dan Carpenter Signed-off-by: Konstantin Komarov --- src/xattr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/xattr.c b/src/xattr.c index af89e50f7b9f32926e4daaea9f8b729916519526..d3d5b9d331d1f55010843085738cf395b640eb0b 100644 --- a/src/xattr.c +++ b/src/xattr.c @@ -521,7 +521,7 @@ static struct posix_acl *ntfs_get_acl_ex(struct user_namespace *mnt_userns, ni_unlock(ni); /* Translate extended attribute to acl */ - if (err > 0) { + if (err >= 0) { acl = posix_acl_from_xattr(mnt_userns, buf, err); if (!IS_ERR(acl)) set_cached_acl(inode, type, acl); -- 2.31.1