btrfs-progs/tests/common

#!/bin/bash
#
# Common routines for all tests
#

_fail()
{
	echo "$*" | tee -a $RESULT
	exit 1
}

run_check()
{
	echo "############### $@" >> $RESULT 2>&1
	"$@" >> $RESULT 2>&1 || _fail "failed: $@"
}

check_prereq()
{
	if ! [ -f $top/$1 ]; then
		_fail "Failed prerequisities: $1";
	fi
}

check_image()
{
	image=$1
	echo "testing image $(basename $image)" >> $RESULT
	$top/btrfs check $image >> $RESULT 2>&1
	[ $? -eq 0 ] && _fail "btrfs check should have detected corruption"

	run_check $top/btrfs check --repair $image
	run_check $top/btrfs check $image
}

check_all_images()
{
	dir=$1
	for i in $(find $dir -iname '*.img')
	do
		echo "extracting image $(basename $i)" >> $RESULT
		$top/btrfs-image -r $i $i.restored || \
			_fail "failed to extract image $i"

		check_image $i.restored

		rm $i.restored
	done
}

# some tests need to mount the recovered image and do verifications call
# 'setup_root_helper' and then check for have_root_helper == 1 if the test
# needs to fail otherwise; using sudo by default for now
sudo=
have_root_helper=0
export sudo
export have_root_helper
setup_root_helper()
{
	if [ $UID != 0 ]; then
		sudo="sudo --non-interactive"
	fi
	have_root_helper=1
}