From patchwork Tue Aug 16 21:40:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Goldwyn Rodrigues X-Patchwork-Id: 12945320 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 368D9C32772 for ; Tue, 16 Aug 2022 21:40:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236666AbiHPVk6 (ORCPT ); Tue, 16 Aug 2022 17:40:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231594AbiHPVk4 (ORCPT ); Tue, 16 Aug 2022 17:40:56 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 53014753A7; Tue, 16 Aug 2022 14:40:55 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id BD1001F385; Tue, 16 Aug 2022 21:40:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1660686053; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type; bh=vT5KSQeyPFq+/ZMvtSMzDrveJluLKoELYbO+MruC5QA=; b=QrAmCQyg/sAqn+0GtB313n4gmXQ4q30ACzWc+O6XtGtJtC40HklfL466YCbAZKw/LaSegK DRGxq677fKHNoVN4QXcnWI8NAMN6cOL7+JEmUMCnAnfglTSkWZ6sMp03pCL/m84HXQx/Vk OtbZlYMB1IYgE/hKE1yII7HgVrlAnl4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1660686053; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type; bh=vT5KSQeyPFq+/ZMvtSMzDrveJluLKoELYbO+MruC5QA=; b=8WC+/5bP+dNgkMX+3EGOJA54W6AdvoFpi7dHdwPKJwXUnhD2TlY53nNT1PSNG0SNGlp6A0 +ChQhSrAV+MAryAw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 528B21345B; Tue, 16 Aug 2022 21:40:53 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id PinjCuUO/GK+IAAAMHmgww (envelope-from ); Tue, 16 Aug 2022 21:40:53 +0000 Date: Tue, 16 Aug 2022 16:40:51 -0500 From: Goldwyn Rodrigues To: fstests@vger.kernel.org Cc: linux-btrfs@vger.kernel.org, fdmanana@kernel.org Subject: [PATCH] btrfs: Test xattr changes for read-only btrfs property Message-ID: <20220816214051.wsw75y3mtjdsim6w@fiona> MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Test creation, modification and deletion of xattr for a BTRFS filesystem which has the read-only property set to true. Re-test the same after BTRFS read-only property is set to false. This tests the bug for "security.*" modifications which escape xattr_permission(), because security parameters are let through in xattr_permission(), without checks from inode_permission()->btrfs_permission(). There is no restriction on security.* from VFS and decision is left to the underlying filesystem. Signed-off-by: Goldwyn Rodrigues diff --git a/tests/btrfs/273 b/tests/btrfs/273 new file mode 100755 index 00000000..ec7d264d --- /dev/null +++ b/tests/btrfs/273 @@ -0,0 +1,78 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2022 SUSE Linux Products GmbH. All Rights Reserved. +# +# FS QA Test No. 273 +# +# Test that no xattr can be changed once btrfs property is set to RO +# +. ./common/preamble +_begin_fstest auto quick attr + +# Import common functions. +#. ./common/filter +. ./common/attr + +# real QA test starts here +_supported_fs btrfs +_require_attrs +_require_btrfs_command "property" +_require_scratch + +_scratch_mkfs > /dev/null 2>&1 || _fail "mkfs failed" +_scratch_mount + +FILENAME=$SCRATCH_MNT/foo + +set_xattr() { + local value=$1 + $SETFATTR_PROG -n "user.one" -v $value $FILENAME + $SETFATTR_PROG -n "security.one" -v $value $FILENAME + $SETFATTR_PROG -n "trusted.one" -v $value $FILENAME +} + +get_xattr() { + $GETFATTR_PROG -n "user.one" $FILENAME + $GETFATTR_PROG -n "security.one" $FILENAME + $GETFATTR_PROG -n "trusted.one" $FILENAME +} + +del_xattr() { + $SETFATTR_PROG -x "user.one" $FILENAME + $SETFATTR_PROG -x "security.one" $FILENAME + $SETFATTR_PROG -x "trusted.one" $FILENAME +} + +# Create a test file. +echo "hello world" > $FILENAME + +set_xattr 1 + +$BTRFS_UTIL_PROG property set $SCRATCH_MNT ro true +$BTRFS_UTIL_PROG property get $SCRATCH_MNT ro + +# Attempt to change values of RO (property) filesystem +set_xattr 2 + +# Check the values of RO (property) filesystem is not changed +get_xattr + +# Attempt to remove xattr from RO (property) filesystem +del_xattr + +# Change filesystem property RO to false + +$BTRFS_UTIL_PROG property set $SCRATCH_MNT ro false +$BTRFS_UTIL_PROG property get $SCRATCH_MNT ro + +# Change the xattrs after RO is false +set_xattr 2 + +# Get the changed values +get_xattr + +# Remove xattr +del_xattr + +status=0 +exit diff --git a/tests/btrfs/273.out b/tests/btrfs/273.out new file mode 100644 index 00000000..f6fca029 --- /dev/null +++ b/tests/btrfs/273.out @@ -0,0 +1,33 @@ +QA output created by 273 +ro=true +setfattr: /scratch/foo: Read-only file system +setfattr: /scratch/foo: Read-only file system +setfattr: /scratch/foo: Read-only file system +getfattr: Removing leading '/' from absolute path names +# file: scratch/foo +user.one="1" + +getfattr: Removing leading '/' from absolute path names +# file: scratch/foo +security.one="1" + +getfattr: Removing leading '/' from absolute path names +# file: scratch/foo +trusted.one="1" + +setfattr: /scratch/foo: Read-only file system +setfattr: /scratch/foo: Read-only file system +setfattr: /scratch/foo: Read-only file system +ro=false +getfattr: Removing leading '/' from absolute path names +# file: scratch/foo +user.one="2" + +getfattr: Removing leading '/' from absolute path names +# file: scratch/foo +security.one="2" + +getfattr: Removing leading '/' from absolute path names +# file: scratch/foo +trusted.one="2" +