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#!/bin/bash
CRYPTSETUP="../cryptsetup"
DEV_NAME="discard-t3st"
DEV=""
PWD1="93R4P4pIqAH8"
cleanup() {
[ -b /dev/mapper/$DEV_NAME ] && dmsetup remove $DEV_NAME
udevadm settle >/dev/null 2>&1
rmmod scsi_debug 2>/dev/null
sleep 2
}
fail()
{
echo "FAILED at line $(caller)"
cleanup
exit 100
}
add_device() {
modprobe scsi_debug $@ delay=0
if [ $? -ne 0 ] ; then
echo "This kernel seems to not support proper scsi_debug module, test skipped."
exit 77
fi
sleep 2
DEV=$(grep -l -e scsi_debug /sys/block/*/device/model | cut -f4 -d /)
DEV="/dev/$DEV"
[ -b $DEV ] || fail "Cannot find $DEV."
}
function check_version()
{
VER_STR=$(dmsetup targets | grep crypt | cut -f 2 -dv)
[ -z "$VER_STR" ] && fail "Failed to parse dm-crypt version."
VER_MAJ=$(echo $VER_STR | cut -f 1 -d.)
VER_MIN=$(echo $VER_STR | cut -f 2 -d.)
# option supported in 1.11
test $VER_MAJ -gt 1 && return 0
test $VER_MIN -ge 11 && return 0
return 1
}
if [ $(id -u) != 0 ]; then
echo "WARNING: You must be root to run this test, test skipped."
exit 77
fi
modprobe --dry-run scsi_debug || exit 77
modprobe dm-crypt >/dev/null 2>&1
if ! check_version ; then
echo "Probably old kernel, test skipped."
exit 77
fi
add_device dev_size_mb=16 sector_size=512 num_tgts=1 lbpu=1
# FIXME test hash of device (unmap -> zero)
# for now just check that flag is enabled
echo "[1] Allowing discards for LUKS device"
echo $PWD1 | $CRYPTSETUP luksFormat --type luks1 $DEV -q -i1 || fail
echo $PWD1 | $CRYPTSETUP luksOpen $DEV $DEV_NAME --allow-discards || fail
$CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail
$CRYPTSETUP resize $DEV_NAME --size 100 || fail
$CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail
dmsetup table $DEV_NAME | grep allow_discards >/dev/null || fail
$CRYPTSETUP luksClose $DEV_NAME || fail
echo "[2] Allowing discards for plain device"
echo $PWD1 | $CRYPTSETUP create -q $DEV_NAME $DEV --hash sha1 --allow-discards || fail
$CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail
$CRYPTSETUP resize $DEV_NAME --size 100 || fail
$CRYPTSETUP status $DEV_NAME | grep flags | grep discards >/dev/null || fail
dmsetup table $DEV_NAME | grep allow_discards >/dev/null || fail
$CRYPTSETUP remove $DEV_NAME || fail
cleanup
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