test-gen.lib

#!/bin/sh

# These routines contain the filesystem generation code.
# This code is sourced by the other scripts so that digest
# generation is consistent.

LC_ALL=C
export LC_ALL

test_dir=t_tmp_dir
test_img=t_tmp_ext2.img

gen_cleanup () {
	rm -r $test_dir $test_img
}

calc_digest () {
	digest=`md5sum $test_img 2>/dev/null | cut -f 1 -d " "`
	if [ x$digest != x ] ; then
		echo $digest
	else
		digest=`md5 $test_img 2>/dev/null | cut -f 4 -d " "`
		echo $digest
	fi
}

# dgen - Exercises the -d option of genext2fs.
# Creates an image with a file of given size.
dgen () {
	blocks=$1; blocksz=$2; size=$3
	echo Testing $blocks blocks of $blocksz bytes with file of size $size
	mkdir $test_dir || exit 1
	cd $test_dir
	if [ x$size = x0 ]; then
		> file.$size
	else
		dd if=/dev/zero of=file.$size bs=$size count=1 2>/dev/null
	fi
	chmod 777 file.$size
	TZ=UTC-11 touch -t 200502070321.43 file.$size .
	cd ..
	./genext2fs -B $blocksz -N 17 -b $blocks -d $test_dir -f -o Linux -q $test_img
}

# fgen - Exercises the -D option of genext2fs.
# Creates an image with the devices listed in the given spec file.
fgen () {
	blocks=$1; fname=$3
	echo Testing $blocks blocks with with devices file $fname
	mkdir $test_dir || exit 1
	cp $fname $test_dir
	TZ=UTC-11 touch -t 200502070321.43 $test_dir/$fname
	./genext2fs -N 92 -b $blocks -D $test_dir/$fname -f -o Linux $test_img
}

# lgen - Exercises the -d option of genext2fs, with symlink.
# Creates an image with a symlink of variable length.
# NB: some systems including early versions of Mac OS X cannot
# change symlink timestamps; this test will fail on those systems.
lgen () {
	blocks=$1; blocksz=$2; appendage=$3
	echo Testing $blocks blocks of $blocksz bytes with symlink ...$appendage
	mkdir $test_dir || exit 1
	cd $test_dir
	target=12345678901234567890123456789012345678901234567890$appendage
	ln -s $target symlink
	TZ=UTC-11 touch -h -t 201309241353.59 symlink .
	cd ..
	./genext2fs -B $blocksz -N 234 -b $blocks -d $test_dir -f -o Linux -q $test_img
}