From patchwork Thu Apr 6 19:43:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13204018 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 97587C77B6C for ; Thu, 6 Apr 2023 19:44:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230040AbjDFToM (ORCPT ); Thu, 6 Apr 2023 15:44:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237498AbjDFToA (ORCPT ); Thu, 6 Apr 2023 15:44:00 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7A5B93D8; Thu, 6 Apr 2023 12:43:48 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5C73B60DED; Thu, 6 Apr 2023 19:43:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BD48BC433EF; Thu, 6 Apr 2023 19:43:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1680810227; bh=YZuAiuQtSGRay462zIFX/RE+9F3tb6MnfWNw9MQhfWU=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=d3E9oYr7xwAnN44LmRlAHGyb2X8/Llh7qcCSVhcty8+AdCeWgpXtCLezwv6gA6aqp JcsH59zY53ZhJ2E4WrTo/tGps4GcKzkFhfswreLe6DisZnGk75ssj6GZSJhcHkZjRb XWhNSVQvGP0Mctb/x4SFi2hmsztFP7g1ZX3SxUoY9oP9FeU58XSzg++n4Nm0+3lAYm qLB271jAl1Qk73rtmcoCNob6Rj6lxf6jI/S9QSTt+JAcWwlyvK/PP5I+IP342Qzi1M yY8lJdAKxXS2jabag7WIflMOZo3705M1c3OmryeNTwOSTKsGzzy3q1PnC4X5AelUqA ml8E+FZHeqpiA== Date: Thu, 06 Apr 2023 12:43:47 -0700 Subject: [PATCH 08/11] common: add helpers for parent pointer tests From: "Darrick J. Wong" To: zlang@redhat.com, djwong@kernel.org Cc: Allison Henderson , Catherine Hoang , linux-xfs@vger.kernel.org, fstests@vger.kernel.org, guan@eryu.me Message-ID: <168080829112.618488.6039839555651751713.stgit@frogsfrogsfrogs> In-Reply-To: <168080829003.618488.1769223982280364994.stgit@frogsfrogsfrogs> References: <168080829003.618488.1769223982280364994.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: fstests@vger.kernel.org From: Allison Henderson Add helper functions in common/parent to parse and verify parent pointers. Also add functions to check that mkfs, kernel, and xfs_io support parent pointers. Signed-off-by: Allison Henderson Signed-off-by: Catherine Hoang Reviewed-by: Darrick J. Wong [djwong: add license and copyright, dont _fail tests immediately, make sure the pptr-generated paths match the dir-generated paths] Signed-off-by: Darrick J. Wong --- common/parent | 209 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ common/rc | 3 + common/xfs | 12 +++ 3 files changed, 224 insertions(+) create mode 100644 common/parent diff --git a/common/parent b/common/parent new file mode 100644 index 0000000000..f849e4b27c --- /dev/null +++ b/common/parent @@ -0,0 +1,209 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2022-2023, Oracle and/or its affiliates. All Rights Reserved. +# +# Parent pointer common functions +# + +# +# parse_parent_pointer parents parent_inode parent_pointer_name +# +# Given a list of parent pointers, find the record that matches +# the given inode and filename +# +# inputs: +# parents : A list of parent pointers in the format of: +# inode/generation/name_length/name +# parent_inode : The parent inode to search for +# parent_name : The parent name to search for +# +# outputs: +# PPINO : Parent pointer inode +# PPGEN : Parent pointer generation +# PPNAME : Parent pointer name +# PPNAME_LEN : Parent pointer name length +# +_parse_parent_pointer() +{ + local parents=$1 + local pino=$2 + local parent_pointer_name=$3 + + local found=0 + + # Find the entry that has the same inode as the parent + # and parse out the entry info + while IFS=\/ read PPINO PPGEN PPNAME_LEN PPNAME; do + if [ "$PPINO" != "$pino" ]; then + continue + fi + + if [ "$PPNAME" != "$parent_pointer_name" ]; then + continue + fi + + found=1 + break + done <<< $(echo "$parents") + + # Check to see if we found anything + # We do not fail the test because we also use this + # routine to verify when parent pointers should + # be removed or updated (ie a rename or a move + # operation changes your parent pointer) + if [ $found -eq "0" ]; then + return 1 + fi + + # Verify the parent pointer name length is correct + if [ "$PPNAME_LEN" -ne "${#parent_pointer_name}" ] + then + echo "*** Bad parent pointer:"\ + "name:$PPNAME, namelen:$PPNAME_LEN" + fi + + #return sucess + return 0 +} + +# +# _verify_parent parent_path parent_pointer_name child_path +# +# Verify that the given child path lists the given parent as a parent pointer +# and that the parent pointer name matches the given name +# +# Examples: +# +# #simple example +# mkdir testfolder1 +# touch testfolder1/file1 +# verify_parent testfolder1 file1 testfolder1/file1 +# +# # In this above example, we want to verify that "testfolder1" +# # appears as a parent pointer of "testfolder1/file1". Additionally +# # we verify that the name record of the parent pointer is "file1" +# +# +# #hardlink example +# mkdir testfolder1 +# mkdir testfolder2 +# touch testfolder1/file1 +# ln testfolder1/file1 testfolder2/file1_ln +# verify_parent testfolder2 file1_ln testfolder1/file1 +# +# # In this above example, we want to verify that "testfolder2" +# # appears as a parent pointer of "testfolder1/file1". Additionally +# # we verify that the name record of the parent pointer is "file1_ln" +# +_verify_parent() +{ + local parent_path=$1 + local parent_pointer_name=$2 + local child_path=$3 + + local parent_ppath="$parent_path/$parent_pointer_name" + + # Verify parent exists + if [ ! -d $SCRATCH_MNT/$parent_path ]; then + echo "$SCRATCH_MNT/$parent_path not found" + else + echo "*** $parent_path OK" + fi + + # Verify child exists + if [ ! -f $SCRATCH_MNT/$child_path ]; then + echo "$SCRATCH_MNT/$child_path not found" + else + echo "*** $child_path OK" + fi + + # Verify the parent pointer name exists as a child of the parent + if [ ! -f $SCRATCH_MNT/$parent_ppath ]; then + echo "$SCRATCH_MNT/$parent_ppath not found" + else + echo "*** $parent_ppath OK" + fi + + # Get the inodes of both parent and child + pino="$(stat -c '%i' $SCRATCH_MNT/$parent_path)" + cino="$(stat -c '%i' $SCRATCH_MNT/$child_path)" + + # Get all the parent pointers of the child + parents=($($XFS_IO_PROG -x -c \ + "parent -f -i $pino -n $parent_pointer_name" $SCRATCH_MNT/$child_path)) + if [[ $? != 0 ]]; then + echo "No parent pointers found for $child_path" + fi + + # Parse parent pointer output. + # This sets PPINO PPGEN PPNAME PPNAME_LEN + _parse_parent_pointer $parents $pino $parent_pointer_name + + # If we didnt find one, bail out + if [ $? -ne 0 ]; then + echo "No parent pointer record found for $parent_path"\ + "in $child_path" + fi + + # Verify the inode generated by the parent pointer name is + # the same as the child inode + pppino="$(stat -c '%i' $SCRATCH_MNT/$parent_ppath)" + if [ $cino -ne $pppino ] + then + echo "Bad parent pointer name value for $child_path."\ + "$SCRATCH_MNT/$parent_ppath belongs to inode $PPPINO,"\ + "but should be $cino" + fi + + # Make sure path printing works by checking that the paths returned + # all point to the same inode. + local tgt="$SCRATCH_MNT/$child_path" + $XFS_IO_PROG -x -c 'parent -p' "$tgt" | while read pptr_path; do + test "$tgt" -ef "$pptr_path" || \ + echo "$tgt parent pointer $pptr_path should be the same file" + done + + echo "*** Verified parent pointer:"\ + "name:$PPNAME, namelen:$PPNAME_LEN" + echo "*** Parent pointer OK for child $child_path" +} + +# +# _verify_parent parent_pointer_name pino child_path +# +# Verify that the given child path contains no parent pointer entry +# for the given inode and file name +# +_verify_no_parent() +{ + local parent_pname=$1 + local pino=$2 + local child_path=$3 + + # Verify child exists + if [ ! -f $SCRATCH_MNT/$child_path ]; then + echo "$SCRATCH_MNT/$child_path not found" + else + echo "*** $child_path OK" + fi + + # Get all the parent pointers of the child + local parents=($($XFS_IO_PROG -x -c \ + "parent -f -i $pino -n $parent_pname" $SCRATCH_MNT/$child_path)) + if [[ $? != 0 ]]; then + return 0 + fi + + # Parse parent pointer output. + # This sets PPINO PPGEN PPNAME PPNAME_LEN + _parse_parent_pointer $parents $pino $parent_pname + + # If we didnt find one, return sucess + if [ $? -ne 0 ]; then + return 0 + fi + + echo "Parent pointer entry found where none should:"\ + "inode:$PPINO, gen:$PPGEN," + "name:$PPNAME, namelen:$PPNAME_LEN" +} diff --git a/common/rc b/common/rc index a7e7d1f25b..bf53d62aac 100644 --- a/common/rc +++ b/common/rc @@ -2565,6 +2565,9 @@ _require_xfs_io_command() echo $testio | grep -q "invalid option" && \ _notrun "xfs_io $command support is missing" ;; + "parent") + testio=`$XFS_IO_PROG -x -c "parent" $TEST_DIR 2>&1` + ;; "pwrite") # -N (RWF_NOWAIT) only works with direct vectored I/O writes local pwrite_opts=" " diff --git a/common/xfs b/common/xfs index b211c7a6d8..81ac143374 100644 --- a/common/xfs +++ b/common/xfs @@ -1791,3 +1791,15 @@ _xfs_discard_max_offset_kb() $XFS_IO_PROG -c 'statfs' "$1" | \ awk '{g[$1] = $3} END {print (g["geom.bsize"] * g["geom.datablocks"] / 1024)}' } + +# this test requires the xfs parent pointers feature +# +_require_xfs_parent() +{ + _scratch_mkfs_xfs_supported -n parent > /dev/null 2>&1 \ + || _notrun "mkfs.xfs does not support parent pointers" + _scratch_mkfs_xfs -n parent > /dev/null 2>&1 + _try_scratch_mount >/dev/null 2>&1 \ + || _notrun "kernel does not support parent pointers" + _scratch_unmount +}