From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from zeniv.linux.org.uk (zeniv.linux.org.uk [62.89.141.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3E70333AD93; Thu, 8 Jan 2026 07:36:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=62.89.141.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767857819; cv=none; b=QbPGjvSxMc0qLgzO1kwBDd0wTBI59X5ZpDZgyJgPjm4pZSzDkyBkUwF8TuwV15AJ9MYiLK8x9Z5Pp0UV9w8ZmC7xSB7irURkdI+mF3VUbOzgMRrRt6XxvfURuV0XQ6tyNOAdllmAzLXBQ5r6oPOhC2Fzh16+LeUV0bLkcwJTqBg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767857819; c=relaxed/simple; bh=ltTrYl7GN0DzsMvuK83DN/Ol0bNTuyKzVNTK64WoEE0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=midgLE8KlvJWeAVtzQevMkpak7sC0SQGmGswmRbErzV+8eTn+PscYqU4jdIRBjdyeuiVfd2e9n0nvio1SXGsLyClqnz0CqdsNqOUyIoLylDA8o2TMOnaHfDIylMBmMS0luFoMuLcA6e9ctheLZ57ynZY/gCqOGG5C5K6wJrUTdY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk; spf=none smtp.mailfrom=ftp.linux.org.uk; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b=e6WIVynK; arc=none smtp.client-ip=62.89.141.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=ftp.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b="e6WIVynK" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=linux.org.uk; s=zeniv-20220401; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=qwJAhJsvJ2SJYlVcArGg+7WWNzPWS5syBQcg8iMXPSQ=; b=e6WIVynKFxM+arGZ7DWjSFwayW M6bReEN0U4a6NoNvWwt0L9SmcilWWOKfaZjJfXSgOCmcWBxz3qKLAjQPiCTJOZvaVocYJtsQza9h6 2b1+t4Jr6Vhcv7mf5ZKQ7iP6jnF5E0+MVC6djUWdVyMBM4TWYWrjVMbCSrKk6a8cVY/F4+Vg7bkVu f10jzwx3LInyv7WENeEGsPi3HBInvwsWAnRVFevQqOP4twYzD/VTg1632CCOEdwmp89766H/GtNe5 c9SsokfingSlAMEMyvypoHiuqPbepGkqiy7wImtL1Hvr0tdM2q1t6LzHcZ0jqBxYHYDu1ztmBELEQ mPleW5FA==; Received: from viro by zeniv.linux.org.uk with local (Exim 4.99 #2 (Red Hat Linux)) id 1vdkaw-00000001mog-0M7Z; Thu, 08 Jan 2026 07:38:10 +0000 From: Al Viro To: linux-fsdevel@vger.kernel.org Cc: torvalds@linux-foundation.org, brauner@kernel.org, jack@suse.cz, mjguzik@gmail.com, paul@paul-moore.com, axboe@kernel.dk, audit@vger.kernel.org, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 34/59] mount_setattr(2): don't mess with LOOKUP_EMPTY Date: Thu, 8 Jan 2026 07:37:38 +0000 Message-ID: <20260108073803.425343-35-viro@zeniv.linux.org.uk> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260108073803.425343-1-viro@zeniv.linux.org.uk> References: <20260108073803.425343-1-viro@zeniv.linux.org.uk> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: Al Viro just use CLASS(filename_uflags) + filename_lookup() Signed-off-by: Al Viro --- fs/namespace.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/namespace.c b/fs/namespace.c index 9d0d8ed16264..d632180f9b1a 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -4978,8 +4978,6 @@ SYSCALL_DEFINE5(mount_setattr, int, dfd, const char __user *, path, lookup_flags &= ~LOOKUP_AUTOMOUNT; if (flags & AT_SYMLINK_NOFOLLOW) lookup_flags &= ~LOOKUP_FOLLOW; - if (flags & AT_EMPTY_PATH) - lookup_flags |= LOOKUP_EMPTY; kattr = (struct mount_kattr) { .lookup_flags = lookup_flags, @@ -4992,7 +4990,8 @@ SYSCALL_DEFINE5(mount_setattr, int, dfd, const char __user *, path, if (err <= 0) return err; - err = user_path_at(dfd, path, kattr.lookup_flags, &target); + CLASS(filename_uflags, name)(path, flags); + err = filename_lookup(dfd, name, kattr.lookup_flags, &target, NULL); if (!err) { err = do_mount_setattr(&target, &kattr); path_put(&target); -- 2.47.3