#! /bin/bash
# FS QA Test No. 262
#
# This test checks the project quota values reported by the quota
# "df" and "report" subcommands to ensure they match what they
# should be.  There was a bug (fixed by xfsprogs commit 7cb2d41b)
# where the values reported were double what they should have been.
#
# SGI PV 1015651
#
#-----------------------------------------------------------------------
# Copyright (c) 2011 SGI.  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
#-----------------------------------------------------------------------
#
# creator
owner=aelder@sgi.com

seq=$(basename $0)
echo "QA output created by ${seq}"

here=$(pwd)

cp /dev/null "${seq}.full"

tmp=/tmp/$$
my_projects=${tmp}.projects
my_projid=${tmp}.projid
proj_name=test_project
proj_num=1

qlimit_meg=500	# 500M limit imposed = 500 * 1024 * 1024 bytes

status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
    cd /
    rm -f ${tmp}.*
}

# get standard environment, filters and checks
. ./common.rc
. ./common.filter
. ./common.quota

echo "Silence is golden."

# real QA test starts here

proj_dir="${SCRATCH_MNT}/test"

# Modify as appropriate.
_supported_fs xfs
_supported_os Linux

_require_quota
_require_scratch


# Make sure the hard limits reported are what was set.
# It is entirely too clever...
# It exploits the fact that we've set the soft and hard limits to
# the same value, and as a result the value in the fourth field in
# both the "df" and the "report" output.  For "report", the line we're
# interested in contains our project name in the first field.  For "df"
# it contains our project directory in the last field.
_filter_quota_rpt() {
	awk '
	BEGIN {
		proj_name = "'${proj_name}'";
		proj_dir = "'${proj_dir}'";
		qlimit_meg = '${qlimit_meg}';
		qlimit = qlimit_meg * 1024 * 1024;
	}
	# This function parses the human-readable values produced
	# by xfs_quota output
	function byte_size(value,  result) {
		result = strtonum(value);
		unit = value;
		gsub("[0-9][0-9]*", "", unit);
		shift = index("KMGTPE", unit);
		while (shift--)
			result *= 1024;
		return result;
	}
	{
		if ($1 !~ proj_name && $nf !~ proj_dir)
			next;
		bsize = byte_size($4);
		if (bsize != qlimit)
			printf("hard limit %d bytes, expected %d\n",
				bsize, qlimit);
	}
	'
}

_quota_cmd() {
	xfs_quota -P "${my_projid}" -D "${my_projects}" -x \
		-c "$@" "${SCRATCH_MNT}"
}

# Set up--mount scratch and create the project directory

echo ${proj_name}:${proj_num} > "${my_projid}"
echo ${proj_num}:${proj_dir} > "${my_projects}"

_scratch_mkfs						>> "${seq}.full" 2>&1

export MOUNT_OPTIONS="-opquota"
_qmount
mkdir -p "${proj_dir}"

# Setup the project quota directory
_quota_cmd "project -s ${proj_name}"			>> "${seq}.full" 2>&1

# Assign block quota limits
_quota_cmd "limit -p bhard=${qlimit_meg}m bsoft=${qlimit_meg}m ${proj_name}" \
							2>> "${seq}.full" 1>&2

# See what gets reported
_quota_cmd "report"		| _filter_quota_rpt	2>> "${seq}.full"
_quota_cmd "df"			| _filter_quota_rpt	2>> "${seq}.full"

# This time using "human readable" output
_quota_cmd "report -h"		| _filter_quota_rpt	2>> "${seq}.full"
_quota_cmd "df -h"		| _filter_quota_rpt	2>> "${seq}.full"

# Clean up
rm -rf "${proj_dir}"
_scratch_unmount

status=0	# success, all done