From b82784a2f52a7a2a5491d36f0c257cf64d87abb5 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Thu, 22 Sep 2022 17:17:16 +0200 Subject: ksmbd: use vfs_remove_acl() The current way of setting and getting posix acls through the generic xattr interface is error prone and type unsafe. The vfs needs to interpret and fixup posix acls before storing or reporting it to userspace. Various hacks exist to make this work. The code is hard to understand and difficult to maintain in it's current form. Instead of making this work by hacking posix acls through xattr handlers we are building a dedicated posix acl api around the get and set inode operations. This removes a lot of hackiness and makes the codepaths easier to maintain. A lot of background can be found in [1]. Now that we've switched all filesystems that can serve as the lower filesystem for ksmbd we can switch ksmbd over to rely on the posix acl api. Note that this is orthogonal to switching the vfs itself over. Link: https://lore.kernel.org/all/20220801145520.1532837-1-brauner@kernel.org [1] Signed-off-by: Christian Brauner (Microsoft) --- fs/ksmbd/vfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/ksmbd/vfs.c b/fs/ksmbd/vfs.c index 93f65f01a4a6..7ccda91b0dc4 100644 --- a/fs/ksmbd/vfs.c +++ b/fs/ksmbd/vfs.c @@ -1321,7 +1321,7 @@ int ksmbd_vfs_remove_acl_xattrs(struct user_namespace *user_ns, sizeof(XATTR_NAME_POSIX_ACL_ACCESS) - 1) || !strncmp(name, XATTR_NAME_POSIX_ACL_DEFAULT, sizeof(XATTR_NAME_POSIX_ACL_DEFAULT) - 1)) { - err = ksmbd_vfs_remove_xattr(user_ns, dentry, name); + err = vfs_remove_acl(user_ns, dentry, name); if (err) ksmbd_debug(SMB, "remove acl xattr failed : %s\n", name); -- cgit