apfstests/common/config

##/bin/bash
#
# Copyright (c) 2000-2003,2006 Silicon Graphics, Inc.  All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
#
# setup and check for config parameters, and in particular
#
# EMAIL -           email of the script runner.
# TEST_DIR -        scratch test directory that is in an already
#                   mounted XFS file system, needs to be be world
#                   writeable
# TEST_DEV -        device for file system containing TEST_DIR
#
# and optionally:
# SCRATCH_DEV -     device you can make a scratch file system on
# SCRATCH_MNT -     mount point for scratch file system
# SCRATCH_LOGDEV -  scratch log device for external log testing
# SCRATCH_RTDEV -   scratch rt dev
# TEST_LOGDEV -     test log device for external log testing
# TEST_RTDEV -      test rt dev
# TAPE_DEV -        the tape device for the xfsdump tests
# RMT_TAPE_DEV -    the remote tape device for the xfsdump tests
# RMT_IRIXTAPE_DEV- the IRIX remote tape device for the xfsdump tests
# RMT_TAPE_USER -   remote user for tape device
#
# - These can be added to $HOST_CONFIG_DIR (witch default to ./config)
#   below or a separate local configuration file can be used (using
#   the HOST_OPTIONS variable).
# - This script is shared by the stress test system and the auto-qa
#   system
# - TEST_DEV & TEST_DIR must be assigned.
# - this script shouldn't make any assertions about filesystem
#   validity or mountedness.
#

# all tests should use a common language setting to prevent golden
# output mismatches.
export LANG=C
export LC_ALL=C

# Warning: don't put freeware before /usr/bsd on IRIX coz you'll
#  get the wrong hostname and set your system name to -s  :)
[ -d /usr/bsd ] && PATH=$PATH:/usr/bsd
[ -d /usr/freeware/bin ] && PATH=$PATH:/usr/freeware/bin
PATH=".:$PATH"

export HOST=`hostname -s`
export HOSTOS=`uname -s`
[ "$HOSTOS" = "IRIX64" ] && export HOSTOS="IRIX"

export MODULAR=0               # using XFS as a module or not
export BOOT="/boot"            # install target for kernels
export EXTRA=${EXTRA:=xfs-qa}

# general parameters (mainly for auto-qa)
export SOAK_PROC=3             # -p option to fsstress
export SOAK_STRESS=10000       # -n option to fsstress
export SOAK_PASSES=-1          # count of repetitions of fsstress (while soaking)
export EMAIL=root@localhost    # where auto-qa will send its status messages
export HOST_OPTIONS=${HOST_OPTIONS:=local.config}
export CHECK_OPTIONS=${CHECK_OPTIONS:="-g auto"}
export BENCH_PASSES=${BENCH_PASSES:=5}
export XFS_MKFS_OPTIONS=${XFS_MKFS_OPTIONS:=-bsize=4096}
export TIME_FACTOR=${TIME_FACTOR:=1}
export LOAD_FACTOR=${LOAD_FACTOR:=1}
export DEBUGFS_MNT=${DEBUGFS_MNT:="/sys/kernel/debug"}

export PWD=`pwd`
#export DEBUG=${DEBUG:=...} # arbitrary CFLAGS really.
export MALLOCLIB=${MALLOCLIB:=/usr/lib/libefence.a}
export LOCAL_CONFIGURE_OPTIONS=${LOCAL_CONFIGURE_OPTIONS:=--enable-readline=yes}

export RECREATE_TEST_DEV=false

# $1 = prog to look for, $2* = default pathnames if not found in $PATH
set_prog_path()
{
    p=`which $1 2> /dev/null`
    if [ -n "$p" -a -x "$p" ]; then
        echo $p
        return 0
    fi
    p=$1

    shift
    for f; do
        if [ -x $f ]; then
            echo $f
            return 0
        fi
    done

    echo ""
    return 1
}

# Handle mkfs.btrfs which does (or does not) require -f to overwrite
set_btrfs_mkfs_prog_path_with_opts()
{
	p=`set_prog_path mkfs.btrfs`
	if [ "$p" != "" ] && grep -q 'force overwrite' $p; then
		echo "$p -f"
	else
		echo $p
	fi
}

_fatal()
{
    echo "$*"
    status=1
    exit 1
}

export MKFS_PROG="`set_prog_path mkfs`"
[ "$MKFS_PROG" = "" ] && _fatal "mkfs not found"

export MOUNT_PROG="`set_prog_path mount`"
[ "$MOUNT_PROG" = "" ] && _fatal "mount not found"

export UMOUNT_PROG="`set_prog_path umount`"
[ "$UMOUNT_PROG" = "" ] && _fatal "umount not found"

export FSSTRESS_PROG="./ltp/fsstress"
[ ! -x $FSSTRESS_PROG ] && _fatal "fsstress not found or executable"

export PERL_PROG="`set_prog_path perl`"
[ "$PERL_PROG" = "" ] && _fatal "perl not found"

export AWK_PROG="`set_prog_path awk`"
[ "$AWK_PROG" = "" ] && _fatal "awk not found"

export SED_PROG="`set_prog_path sed`"
[ "$SED_PROG" = "" ] && _fatal "sed not found"

export BC_PROG="`set_prog_path bc`"
[ "$BC_PROG" = "" ] && _fatal "bc not found"

export PS_ALL_FLAGS="-ef"

export DF_PROG="`set_prog_path df`"
[ "$DF_PROG" = "" ] && _fatal "df not found"
[ "$HOSTOS" = "Linux" ] && export DF_PROG="$DF_PROG -T -P"

export XFS_LOGPRINT_PROG="`set_prog_path xfs_logprint`"
export XFS_REPAIR_PROG="`set_prog_path xfs_repair`"
export XFS_DB_PROG="`set_prog_path xfs_db`"
export XFS_GROWFS_PROG=`set_prog_path xfs_growfs`
export XFS_IO_PROG="`set_prog_path xfs_io`"
export XFS_PARALLEL_REPAIR_PROG="`set_prog_path xfs_prepair`"
export XFS_PARALLEL_REPAIR64_PROG="`set_prog_path xfs_prepair64`"
export __XFSDUMP_PROG="`set_prog_path xfsdump`"
if [ -n "$__XFSDUMP_PROG" ]; then
	export XFSDUMP_PROG="$__XFSDUMP_PROG -e"
else
	export XFSDUMP_PROG=""
fi
export XFSRESTORE_PROG="`set_prog_path xfsrestore`"
export XFSINVUTIL_PROG="`set_prog_path xfsinvutil`"
export GETFATTR_PROG="`set_prog_path getfattr`"
export SETFATTR_PROG="`set_prog_path setfattr`"
export CHACL_PROG="`set_prog_path chacl`"
export ATTR_PROG="`set_prog_path attr`"
export QUOTA_PROG="`set_prog_path quota`"
export XFS_QUOTA_PROG="`set_prog_path xfs_quota`"
export KILLALL_PROG="`set_prog_path killall`"
export INDENT_PROG="`set_prog_path indent`"
export XFS_COPY_PROG="`set_prog_path xfs_copy`"
export FSTRIM_PROG="`set_prog_path fstrim`"
export DUMPE2FS_PROG="`set_prog_path dumpe2fs`"
export FIO_PROG="`set_prog_path fio`"
export FILEFRAG_PROG="`set_prog_path filefrag`"
export E4DEFRAG_PROG="`set_prog_path e4defrag`"
export LOGGER_PROG="`set_prog_path logger`"
export DBENCH_PROG="`set_prog_path dbench`"
export DMSETUP_PROG="`set_prog_path dmsetup`"
export WIPEFS_PROG="`set_prog_path wipefs`"
export DUMP_PROG="`set_prog_path dump`"
export RESTORE_PROG="`set_prog_path restore`"
export LVM_PROG="`set_prog_path lvm`"
export CHATTR_PROG="`set_prog_path chattr`"

# use 'udevadm settle' or 'udevsettle' to wait for lv to be settled.
# newer systems have udevadm command but older systems like RHEL5 don't.
# But if neither one is available, just set it to "sleep 1" to wait for lv to
# be settled
UDEV_SETTLE_PROG="`set_prog_path udevadm`"
if [ "$UDEV_SETTLE_PROG" == "" ]; then
	# try udevsettle command
	UDEV_SETTLE_PROG="`set_prog_path udevsettle`"
else
	# udevadm is available, add 'settle' as subcommand
	UDEV_SETTLE_PROG="$UDEV_SETTLE_PROG settle"
fi
# neither command is available, use sleep 1
if [ "$UDEV_SETTLE_PROG" == "" ]; then
	UDEV_SETTLE_PROG="sleep 1"
fi
export UDEV_SETTLE_PROG

# Generate a comparable xfsprogs version number in the form of
# major * 10000 + minor * 100 + release
#
# $ xfs_db -V
# xfs_db version 2.9.7
#
# so, 2.9.7 = 20907
_version=`$XFS_DB_PROG -V | $AWK_PROG '
	/version/ {
		if (split($3,ver,".") == 3)
			print (ver[1] * 10000) + (ver[2] * 100) + ver[3];
	}'`
[ -z "$_version" ] && _fatal "xfsprogs version cannot be found"
export XFSPROGS_VERSION="$_version"

case "$HOSTOS" in
    IRIX*)
        export MKFS_XFS_PROG="`set_prog_path mkfs_xfs`"
        export MKFS_UDF_PROG="`set_prog_path mkfs_udf`"
        export XFS_FSR_PROG="`set_prog_path /usr/etc/fsr_xfs`"
        export MKFS_NFS_PROG="false"
        export MKFS_CIFS_PROG="false"
        ;;
    Linux)
        export MKFS_XFS_PROG="`set_prog_path mkfs.xfs`"
        export MKFS_EXT4_PROG="`set_prog_path mkfs.ext4`"
        export MKFS_UDF_PROG="`set_prog_path mkudffs`"
        export MKFS_BTRFS_PROG="`set_btrfs_mkfs_prog_path_with_opts`"
        export MKFS_F2FS_PROG="`set_prog_path mkfs.f2fs`"
        export DUMP_F2FS_PROG="`set_prog_path dump.f2fs`"
        export BTRFS_UTIL_PROG="`set_prog_path btrfs`"
        export BTRFS_SHOW_SUPER_PROG="`set_prog_path btrfs-show-super`"
        export XFS_FSR_PROG="`set_prog_path xfs_fsr`"
        export MKFS_NFS_PROG="false"
        export MKFS_CIFS_PROG="false"
        export MKFS_OVERLAY_PROG="false"
        export MKFS_REISER4_PROG="`set_prog_path mkfs.reiser4`"
        ;;
esac

# SELinux adds extra xattrs which can mess up our expected output.
# So, mount with a context, and they won't be created
# # nfs_t is a "liberal" context so we can use it.
if [ -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then
	SELINUX_MOUNT_OPTIONS="-o context=system_u:object_r:nfs_t:s0"
	export SELINUX_MOUNT_OPTIONS
fi

# check if mkfs.xfs supports v5 xfs
XFS_MKFS_HAS_NO_META_SUPPORT=""
touch /tmp/crc_check.img
$MKFS_XFS_PROG -N -d file,name=/tmp/crc_check.img,size=32m -m crc=0 \
	>/dev/null 2>&1;
if [ $? -ne 0 ]; then
	XFS_MKFS_HAS_NO_META_SUPPORT=true
fi
rm -f /tmp/crc_check.img
export XFS_MKFS_HAS_NO_META_SUPPORT

_mount_opts()
{
	case $FSTYP in
	xfs)
		export MOUNT_OPTIONS=$XFS_MOUNT_OPTIONS
		;;
	udf)
		export MOUNT_OPTIONS=$UDF_MOUNT_OPTIONS
		;;
	nfs)
		export MOUNT_OPTIONS=$NFS_MOUNT_OPTIONS
		;;
	cifs)
		export MOUNT_OPTIONS=$CIFS_MOUNT_OPTIONS
		;;
	overlay)
		export MOUNT_OPTIONS=$OVERLAY_MOUNT_OPTIONS
		;;
	ext2|ext3|ext4|ext4dev)
		# acls & xattrs aren't turned on by default on ext$FOO
		export MOUNT_OPTIONS="-o acl,user_xattr $EXT_MOUNT_OPTIONS"
		;;
	f2fs)
		export MOUNT_OPTIONS="-o acl,user_xattr $F2FS_MOUNT_OPTIONS"
		;;
	reiserfs)
		# acls & xattrs aren't turned on by default on reiserfs
		export MOUNT_OPTIONS="-o acl,user_xattr $REISERFS_MOUNT_OPTIONS"
		;;
       reiser4)
               # acls & xattrs aren't supported by reiser4
               export MOUNT_OPTIONS=$REISER4_MOUNT_OPTIONS
               ;;
	gfs2)
		# acls aren't turned on by default on gfs2
		export MOUNT_OPTIONS="-o acl $GFS2_MOUNT_OPTIONS"
		;;
	tmpfs)
		# We need to specify the size at mount, use 512 MB by default
		export MOUNT_OPTIONS="-o size=512M $TMPFS_MOUNT_OPTIONS"
		;;
	*)
		;;
	esac
}

_test_mount_opts()
{
	case $FSTYP in
	cifs)
		export TEST_FS_MOUNT_OPTS=$CIFS_MOUNT_OPTIONS
		;;
	*)
		;;
	esac
}

_mkfs_opts()
{
	case $FSTYP in
	xfs)
		export MKFS_OPTIONS=$XFS_MKFS_OPTIONS
		;;
	udf)
		[ ! -z "$udf_fsize" ] && \
			UDF_MKFS_OPTIONS="$UDF_MKFS_OPTIONS -s $udf_fsize"
		export MKFS_OPTIONS=$UDF_MKFS_OPTIONS
		;;
	nfs)
		export MKFS_OPTIONS=$NFS_MKFS_OPTIONS
		;;
	cifs)
		export MKFS_OPTIONS=$CIFS_MKFS_OPTIONS
		;;
	reiserfs)
		export MKFS_OPTIONS="$REISERFS_MKFS_OPTIONS -q"
		;;
       reiser4)
		export MKFS_OPTIONS=$REISER4_MKFS_OPTIONS
		;;
	gfs2)
		export MKFS_OPTIONS="$GFS2_MKFS_OPTIONS -O -p lock_nolock"
		;;
	jfs)
		export MKFS_OPTIONS="$JFS_MKFS_OPTIONS -q"
		;;
	f2fs)
		export MKFS_OPTIONS="$F2FS_MKFS_OPTIONS"
		;;
	*)
		;;
	esac
}

_fsck_opts()
{
	case $FSTYP in
	ext2|ext3|ext4|ext4dev)
		export FSCK_OPTIONS="-nf"
		;;
	reiser*)
		export FSCK_OPTIONS="--yes"
		;;
	f2fs)
		export FSCK_OPTIONS=""
		;;
	*)
		export FSCK_OPTIONS="-n"
		;;
	esac
}

known_hosts()
{
	[ "$HOST_CONFIG_DIR" ] || HOST_CONFIG_DIR=`pwd`/configs

	[ -f /etc/xfsqa.config ]             && export HOST_OPTIONS=/etc/xfsqa.config
	[ -f $HOST_CONFIG_DIR/$HOST ]        && export HOST_OPTIONS=$HOST_CONFIG_DIR/$HOST
	[ -f $HOST_CONFIG_DIR/$HOST.config ] && export HOST_OPTIONS=$HOST_CONFIG_DIR/$HOST.config
}

# Returns a list of sections in config file
# Each section starts with the section name in the format
# [section_name1]. Only alphanumeric characters and '_' is allowed
# in the section name otherwise the section will not be resognised.
# Section name must be contained between square brackets.
get_config_sections() {
	sed -n -e "s/^\[\([[:alnum:]_]*\)\]/\1/p" < $1
}

if [ ! -f "$HOST_OPTIONS" ]; then
	known_hosts
fi

export HOST_OPTIONS_SECTIONS="-no-sections-"
export OPTIONS_HAVE_SECTIONS=false
if [ -f "$HOST_OPTIONS" ]; then
	export HOST_OPTIONS_SECTIONS=`get_config_sections $HOST_OPTIONS`
	if [ -z "$HOST_OPTIONS_SECTIONS" ]; then
		. $HOST_OPTIONS
		export HOST_OPTIONS_SECTIONS="-no-sections-"
	else
		export OPTIONS_HAVE_SECTIONS=true
	fi
fi

# Parse config section options. This function will parse all the configuration
# within a single section which name is passed as an argument. For section
# name format see comments in get_config_sections().
# Empty lines and everything after '#' will be ignored.
# Configuration options should be defined in the format
#
# CONFIG_OPTION=value
#
# This 'CONFIG_OPTION' variable and will be exported as an environment variable.
parse_config_section() {
	SECTION=$1
	if ! $OPTIONS_HAVE_SECTIONS; then
		return 0
	fi
	eval `sed -e 's/[[:space:]]*\=[[:space:]]*/=/g' \
		-e 's/#.*$//' \
		-e 's/[[:space:]]*$//' \
		-e 's/^[[:space:]]*//' \
		-e "s/^\([^=]*\)=\"\?'\?\([^\"']*\)\"\?'\?$/export \1=\"\2\"/" \
		< $HOST_OPTIONS \
		| sed -n -e "/^\[$SECTION\]/,/^\s*\[/{/^[^#].*\=.*/p;}"`
}

get_next_config() {
	if [ ! -z "$CONFIG_INCLUDED" ] && ! $OPTIONS_HAVE_SECTIONS; then
		return 0
	fi

	local OLD_FSTYP=$FSTYP
	local OLD_MOUNT_OPTIONS=$MOUNT_OPTIONS
	local OLD_TEST_FS_MOUNT_OPTS=$TEST_FS_MOUNT_OPTS
	local OLD_MKFS_OPTIONS=$MKFS_OPTIONS
	local OLD_FSCK_OPTIONS=$FSCK_OPTIONS

	unset MOUNT_OPTIONS
	unset MKFS_OPTIONS
	unset FSCK_OPTIONS
	# We might have deduced SCRATCH_DEV from the SCRATCH_DEV_POOL in the previous
	# run, so we have to unset it now.
	if [ "$SCRATCH_DEV_NOT_SET" == "true" ]; then
		unset SCRATCH_DEV
	fi

	parse_config_section $1

	if [ ! -z "$OLD_FSTYP" ] && [ $OLD_FSTYP != $FSTYP ]; then
		[ -z "$MOUNT_OPTIONS" ] && _mount_opts
		[ -z "$TEST_FS_MOUNT_OPTS" ] && _test_mount_opts
		[ -z "$MKFS_OPTIONS" ] && _mkfs_opts
		[ -z "$FSCK_OPTIONS" ] && _fsck_opts
	else
		[ -z "$MOUNT_OPTIONS" ] && export MOUNT_OPTIONS=$OLD_MOUNT_OPTIONS
		[ -z "$TEST_FS_MOUNT_OPTS" ] && export TEST_FS_MOUNT_OPTS=$OLD_TEST_FS_MOUNT_OPTS
		[ -z "$MKFS_OPTIONS" ] && export MKFS_OPTIONS=$OLD_MKFS_OPTIONS
		[ -z "$FSCK_OPTIONS" ] && export FSCK_OPTIONS=$OLD_FSCK_OPTIONS
	fi

	# set default RESULT_BASE
	if [ -z "$RESULT_BASE" ]; then
		export RESULT_BASE="$here/results/"
	fi

	#  Mandatory Config values.
	MC=""
	[ -z "$EMAIL" ]          && MC="$MC EMAIL"
	[ -z "$TEST_DIR" ]       && MC="$MC TEST_DIR"
	[ -z "$TEST_DEV" ]       && MC="$MC TEST_DEV"

	if [ -n "$MC" ]; then
		echo "Warning: need to define parameters for host $HOST"
		echo "       or set variables:"
		echo "       $MC"
		exit 1
	fi

	echo $TEST_DEV | grep -qE ":|//" > /dev/null 2>&1
	if [ ! -b "$TEST_DEV" -a "$?" != "0" -a "$FSTYP" != "overlay" ]; then
		echo "common/config: Error: \$TEST_DEV ($TEST_DEV) is not a block device or a network filesystem"
		exit 1
	elif [ "$FSTYP" == "overlay" -a ! -d "$TEST_DEV" ]; then
		echo "common/config: Error: \$TEST_DEV ($TEST_DEV) is not a directory for overlay"
		exit 1
	fi

	if [ ! -d "$TEST_DIR" ]; then
		echo "common/config: Error: \$TEST_DIR ($TEST_DIR) is not a directory"
		exit 1
	fi

	# a btrfs tester will set only SCRATCH_DEV_POOL, we will put first of its dev
	# to SCRATCH_DEV and rest to SCRATCH_DEV_POOL to maintain the backward compatibility
	if [ ! -z "$SCRATCH_DEV_POOL" ]; then
		if [ ! -z "$SCRATCH_DEV" ]; then
			echo "common/config: Error: \$SCRATCH_DEV ($SCRATCH_DEV) should be unset when \$SCRATCH_DEV_POOL ($SCRATCH_DEV_POOL) is set"
			exit 1
		fi
		SCRATCH_DEV=`echo $SCRATCH_DEV_POOL | awk '{print $1}'`
		export SCRATCH_DEV
		export SCRATCH_DEV_NOT_SET=true
	fi

	echo $SCRATCH_DEV | grep -qE ":|//" > /dev/null 2>&1
	if [ ! -z "$SCRATCH_DEV" -a ! -b "$SCRATCH_DEV" -a "$?" != "0" -a "$FSTYP" != "overlay" ]; then
		echo "common/config: Error: \$SCRATCH_DEV ($SCRATCH_DEV) is not a block device or a network filesystem"
		exit 1
	elif [ ! -z "$SCRATCH_DEV" -a "$FSTYP" == "overlay" -a ! -d "$SCRATCH_DEV" ]; then
		echo "common/config: Error: \$SCRATCH_DEV ($SCRATCH_DEV) is not a directory for overlay"
		exit 1
	fi

	if [ ! -z "$SCRATCH_MNT" -a ! -d "$SCRATCH_MNT" ]; then
		echo "common/config: Error: \$SCRATCH_MNT ($SCRATCH_MNT) is not a directory"
		exit 1
	fi
}

if [ -z "$CONFIG_INCLUDED" ]; then
	get_next_config `echo $HOST_OPTIONS_SECTIONS | cut -f1 -d" "`
	export CONFIG_INCLUDED=true

	# Autodetect fs type based on what's on $TEST_DEV unless it's been set
	# externally
	if [ -z "$FSTYP" ] && \
	   [ "$HOSTOS" == "Linux" -o "$OSTYPE" == "linux-gnu" ] && \
	   [ ! -z "$TEST_DEV" ]; then
		FSTYP=`blkid -c /dev/null -s TYPE -o value $TEST_DEV`
	fi
	FSTYP=${FSTYP:=xfs}
	export FSTYP
	[ -z "$MOUNT_OPTIONS" ] && _mount_opts
	[ -z "$TEST_FS_MOUNT_OPTS" ] && _test_mount_opts
	[ -z "$MKFS_OPTIONS" ] && _mkfs_opts
	[ -z "$FSCK_OPTIONS" ] && _fsck_opts
fi

# canonicalize the mount points
# this follows symlinks and removes all trailing "/"s
export TEST_DIR=`readlink -e "$TEST_DIR"`
export SCRATCH_MNT=`readlink -e "$SCRATCH_MNT"`

# make sure this script returns success
/bin/true