btrfs-progs/tests/common
David Sterba 37e0aa576c btrfs-progs: tests: allow alternate name for dm target detection
Some dm target name and module do not match exacly, extend the helper to
take optional 2nd parameter that will be checked in case loading by the
first parameter fails.

Signed-off-by: David Sterba <dsterba@suse.com>
2021-09-07 16:57:06 +02:00

872 lines
22 KiB
Bash

#!/bin/bash
#
# Common routines for all tests
#
# Temporary array for building the final command, injecting arguments as needed
declare -a cmd_array
# assert that argument is not empty and is an existing path (file or directory)
_assert_path()
{
local path
path="$1"
if [ -z "$path" ]; then
echo "ASSERTION FAIL: $path is not valid"
exit 1
fi
if [ -f "$path" -o -d "$path" -o -b "$path" ]; then
return 0
fi
echo "ASSERTION FAIL: $path is not valid"
exit 1
}
# $1: this string gets matched to files, absolute or relative path, or a
# systemwide command available via $PATH
_is_file_or_command()
{
local msg
msg="$1"
if [ -z "$msg" ]; then
return 1
fi
if [ -f "$msg" -o -d "$msg" -o -b "$msg" ]; then
return 0
fi
msg=$(type -p -- "$msg")
if [ -f "$msg" ]; then
return 0
fi
return 1
}
_fail()
{
echo "$*" | tee -a "$RESULTS"
exit 1
}
# log a message to the results file
_log()
{
echo "$*" >> "$RESULTS"
}
# copy stdout to log and pass to stdout, eg. another stdout consumer, commands
# should redirect stderr to stdout if this is consmed by further commands
_log_stdout()
{
tee -a "$RESULTS"
}
# print a message to stdout and to log that something was skipped
_log_skipped()
{
echo " [SKIPPED] $*" | tee -a "$RESULTS"
exit 0
}
_not_run()
{
echo " [NOTRUN] $*"
exit 0
}
# debugging helper
_dump_args()
{
local i
i=1
echo "DUMP args for ${FUNCNAME[1]}:"
while [ $# -gt 0 ]; do
echo "ARG[$i]: $1"
i=$(($i+1))
shift
done
}
# read arguments, look if we're calling btrfs and if there's a known
# subcommand, return argument index to insert, taking root helper into
# consideration, returns 2 for unknown subcommand
_get_spec_ins()
{
if [ "$1" = 'root_helper' ]; then
if [[ $2 =~ /btrfs$ ]]; then
echo -n 4
return
fi
if [[ $2 =~ /mkfs.btrfs$ ]]; then
echo -n 3
return
fi
if [[ $2 =~ /btrfs-convert$ ]]; then
echo -n 3
return
fi
else
if [[ $1 =~ /btrfs$ ]]; then
echo -n 3
return
fi
if [[ $1 =~ /mkfs.btrfs$ ]]; then
echo -n 2
return
fi
if [[ $1 =~ /btrfs-convert$ ]]; then
echo -n 2
return
fi
fi
echo -n 2
}
# return command-specific arguments if enabled
_cmd_spec()
{
if [ "$TEST_ENABLE_OVERRIDE" = 'true' ]; then
# if defined via common.local, use it, otherwise pass make
# arguments
if [ "$(type -t _skip_spec)" = 'function' ]; then
if _skip_spec "$@"; then
return
fi
fi
case "$1" in
check) echo -n "$TEST_ARGS_CHECK" ;;
*/mkfs.btrfs) echo -n "$TEST_ARGS_MKFS" ;;
*/btrfs-convert) echo -n "$TEST_ARGS_CONVERT" ;;
esac
fi
}
# Check if $1 is a known command that may need parameter injection or some
# special handling regarding $INSTRUMENT
_is_target_command()
{
[[ $1 =~ /btrfs$ ]] && return 0
[[ $1 =~ /mkfs.btrfs$ ]] && return 0
[[ $1 =~ /btrfs-convert$ ]] && return 0
[[ $1 =~ /btrfs-corrupt-block$ ]] && return 0
[[ $1 =~ /btrfs-image$ ]] && return 0
[[ $1 =~ /btrfs-select-super$ ]] && return 0
[[ $1 =~ /btrfs-find-root$ ]] && return 0
[[ $1 =~ /btrfstune$ ]] && return 0
return 1
}
# Expanding extra commands/options for current command string
# This function is responsible for inserting the following things:
# - @INSTRUMENT before 'btrfs' commands
# To ensure that $INSTRUMENT is not executed for things like sudo/mount
# which normally have setuid/setgid which will not be instrumented
#
# - Add extra arguments for 'btrfs check/mkfs.btrfs/btrfs-convert'
# This allows us to test certain functionality like lowmem mode for 'btrfs
# check'
expand_command()
{
local command_index
local ins
local spec
local i
ins=$(_get_spec_ins "$@")
spec=$(($ins-1))
spec=$(_cmd_spec "${@:$spec}")
cmd_array=()
if [ "$1" = 'root_helper' ] && _is_target_command "$2" ; then
command_index=2
elif _is_target_command "$1" ; then
command_index=1
else
# Since we iterate from offset 1, this never get hit, thus we
# won't insert $INSTRUMENT
command_index=0
fi
for ((i = 1; i <= $#; i++ )); do
if [ $i -eq $command_index -a ! -z "$INSTRUMENT" ]; then
cmd_array+=($INSTRUMENT)
fi
if [ $i -eq $ins -a ! -z "$spec" ]; then
cmd_array+=("$spec")
fi
if [ $i -eq $command_index -a "$TEST_FLAVOR" = 'static' ]; then
cmd_array+=("${!i}".static)
else
cmd_array+=("${!i}")
fi
done
}
# Argument passing magic:
# the command passed to run_* helpers is inspected, if there's 'btrfs command'
# found and there are defined additional arguments, they're inserted just after
# the command name, ie. any arguments in the test could override them.
#
# The root helper is recognized. Unrecognized subcommands or external tools
# are not affected.
run_check()
{
expand_command "$@"
echo "====== RUN CHECK ${cmd_array[@]}" >> "$RESULTS" 2>&1
if [[ $TEST_LOG =~ tty ]]; then echo "CMD: ${cmd_array[@]}" > /dev/tty; fi
"${cmd_array[@]}" >> "$RESULTS" 2>&1 || _fail "failed: ${cmd_array[@]}"
}
# same as run_check but the stderr+stdout output is duplicated on stdout and
# can be processed further
#
# NOTE: If this function is called on btrfs related commands, caller should
# filter the output, as INSTRUMENT can easily pollute the output.
run_check_stdout()
{
expand_command "$@"
echo "====== RUN CHECK ${cmd_array[@]}" >> "$RESULTS" 2>&1
if [[ $TEST_LOG =~ tty ]]; then echo "CMD(stdout): ${cmd_array[@]}" \
> /dev/tty; fi
"${cmd_array[@]}" 2>&1 | tee -a "$RESULTS"
if [ ${PIPESTATUS[0]} -ne 0 ]; then
_fail "failed: $@"
fi
}
# same as run_check but does not fail the test if it's handled gracefully by
# the tool, unexpected failure like segfault or abort will exit forcibly
# output is logged
run_mayfail()
{
expand_command "$@"
echo "====== RUN MAYFAIL ${cmd_array[@]}" >> "$RESULTS" 2>&1
if [[ $TEST_LOG =~ tty ]]; then echo "CMD(mayfail): ${cmd_array[@]}" \
> /dev/tty; fi
"${cmd_array[@]}" >> "$RESULTS" 2>&1
ret=$?
if [ $ret != 0 ]; then
echo "failed (ignored, ret=$ret): $@" >> "$RESULTS"
if [ $ret == 139 ]; then
_fail "mayfail: returned code 139 (SEGFAULT), not ignored"
elif [ $ret == 134 ]; then
_fail "mayfail: returned code 134 (SIGABRT), not ignored"
fi
return $ret
fi
}
# Same as run_mayfail but does not fail the test if it's handled gracefully by
# the caller, unexpected failure like segfault or abort will exit forcibly,
# output is logged
#
# NOTE: we don't use pipefail to avoid disturbing the rest of the caller
# script, so here we use a temporary output file. Pipes are not supported,
# store the output to a variable for further processing.
run_mayfail_stdout()
{
tmp_output=$(mktemp --tmpdir btrfs-progs-test--mayfail-stdtout.XXXXXX)
expand_command "$@"
echo "====== RUN MAYFAIL ${cmd_array[@]}" >> "$RESULTS" 2>&1
if [[ $TEST_LOG =~ tty ]]; then echo "CMD(mayfail): ${cmd_array[@]}" \
> /dev/tty; fi
"${cmd_array[@]}" 2>&1 > "$tmp_output"
ret=$?
cat "$tmp_output" >> "$RESULTS"
cat "$tmp_output"
rm -- "$tmp_output"
if [ "$ret" != 0 ]; then
echo "failed (ignored, ret=$ret): $@" >> "$RESULTS"
if [ "$ret" == 139 ]; then
_fail "mayfail: returned code 139 (SEGFAULT), not ignored"
elif [ "$ret" == 134 ]; then
_fail "mayfail: returned code 134 (SIGABRT), not ignored"
fi
return "$ret"
fi
# return the command code and let the caller decide what to do based
# on the stdout
return "$ret"
}
# first argument is error message to print if it fails, otherwise
# same as run_check but expects the command to fail, output is logged
run_mustfail()
{
local msg
msg="$1"
shift
if _is_file_or_command "$msg"; then
echo "ASSERTION FAIL: 1st argument of run_mustfail must be a message"
exit 1
fi
expand_command "$@"
echo "====== RUN MUSTFAIL ${cmd_array[@]}" >> "$RESULTS" 2>&1
if [[ $TEST_LOG =~ tty ]]; then echo "CMD(mustfail): ${cmd_array[@]}" \
> /dev/tty; fi
"${cmd_array[@]}" >> "$RESULTS" 2>&1
if [ $? != 0 ]; then
echo "failed (expected): $@" >> "$RESULTS"
return 0
else
echo "succeeded (unexpected!): $@" >> "$RESULTS"
_fail "unexpected success: $msg"
return 1
fi
}
# The first parameter is error message to print if it fails, just like
# run_must_fail().
# NOTE: we don't use pipefail to avoid disturbing other script, so here we
# use a temporary output file.
# So it doesn't support pipeline in the @cmd
run_mustfail_stdout()
{
local msg
local ret
local tmp_output
tmp_output=$(mktemp --tmpdir btrfs-progs-test--mustfail-stdtout.XXXXXX)
msg="$1"
shift
if _is_file_or_command "$msg"; then
echo "ASSERTION FAIL: 1st argument of run_mustfail_stdout must be a message"
exit 1
fi
expand_command "$@"
echo "====== RUN MUSTFAIL ${cmd_array[@]}" >> "$RESULTS" 2>&1
if [[ $TEST_LOG =~ tty ]]; then echo "CMD(mustfail): ${cmd_array[@]}" \
> /dev/tty; fi
"${cmd_array[@]}" 2>&1 > "$tmp_output"
ret=$?
cat "$tmp_output" >> "$RESULTS"
cat "$tmp_output"
rm "$tmp_output"
if [ "$ret" != 0 ]; then
echo "failed (expected): $@" >> "$RESULTS"
return 0
else
echo "succeeded (unexpected!): $@" >> "$RESULTS"
_fail "unexpected success: $msg"
return 1
fi
}
check_prereq()
{
# Internal tools for testing, not shipped with the package
case "$1" in
btrfs-corrupt-block|btrfs-find-root|btrfs-select-super|fssum)
if ! [ -f "$INTERNAL_BIN/$1" ]; then
_fail "Failed prerequisites: $INTERNAL_BIN/$1";
fi
;;
*)
bin="$TOP/$1"
if [ "$TEST_FLAVOR" = 'static' ]; then
bin="${bin}.static"
fi
if ! [ -f "$bin" ]; then
_fail "Failed prerequisites: $bin";
fi
;;
esac
}
check_global_prereq()
{
type -p "$1" &> /dev/null
if [ $? -ne 0 ]; then
_fail "Failed system wide prerequisities: $1";
fi
}
# Check if dmsetup and the target passed as argument is available, and skip the
# test if they aren't. Some targets may be loaded by different module name, in
# that case the 2nd parameter is used as well if specified.
#
# $1: the target name, expectind module dm-$1
# $2: optional name or alias, if specified, fail
check_dm_target_support()
{
local target="$1"
local secondary="$2"
setup_root_helper
type -p dmsetup &> /dev/null
if [ $? -ne 0 ]; then
_not_run "This test requires dmsetup tool";
fi
$SUDO_HELPER modprobe "dm-$target" >/dev/null 2>&1
$SUDO_HELPER dmsetup targets 2>&1 | grep -q "^$target"
if [ $? -ne 0 ]; then
# Try the other name
if ! [ -z "$secondary" ]; then
$SUDO_HELPER modprobe "dm-$secondary" >/dev/null 2>&1
$SUDO_HELPER dmsetup targets 2>&1 | grep -q "^$secondary"
if [ $? -eq 0 ]; then
return 0
fi
fi
_not_run "This test requires dm-$target support"
fi
}
check_image()
{
local image
local tmp_output
tmp_output=$(mktemp --tmpdir btrfs-progs-test-check-image.XXXXXX)
image=$1
echo "testing image $(basename $image)" >> "$RESULTS"
run_mustfail_stdout "btrfs check should have detected corruption" \
"$TOP/btrfs" check "$image" &> "$tmp_output"
# Also make sure no subpage related warnings
check_test_results "$tmp_output" "$testname"
run_check "$TOP/btrfs" check --repair --force "$image"
run_check_stdout "$TOP/btrfs" check "$image" &> "$tmp_output"
# Also make sure no subpage related warnings for the repaired image
check_test_results "$tmp_output" "$testname"
rm -f -- "$tmp_output"
}
# Extract a usable image from packed formats
# - raw btrfs filesystem images, suffix .raw
# - dtto compressed by XZ, suffix .raw.xz
# - meta-dump images with suffix .img
# - dtto compressed by XZ, suffix .img.xz
# - compressed send stream, .stream.xz
extract_image()
{
local image
local cleanme
image="$1"
case "$image" in
*.img)
rm -f "$image.restored"
;;
*.img.xz)
xz --decompress --keep --force "$image" || \
_fail "failed to decompress image $image" >&2
image=${image%%.xz}
rm -f "$image.restored"
cleanme=$image
;;
*.raw)
cp --sparse=auto --force "$image" "$image.restored"
;;
*.raw.xz)
xz --decompress --keep --force "$image" || \
_fail "failed to decompress image $image" >&2
image=${image%%.xz}
mv "$image" "$image.restored"
;;
*.stream.xz)
xz --decompress --keep --force "$image" || \
_fail "failed to decompress file $image" >&2
image=${image%%.xz}
mv "$image" "$image.restored"
;;
esac
if ! [ -f "$image.restored" ]; then
echo "restoring image $(basename $image)" >> "$RESULTS"
"$TOP/btrfs-image" -r "$image" "$image.restored" \
&>> "$RESULTS" \
|| _fail "failed to restore image $image" >&2
fi
[ -f "$cleanme" ] && rm -f "$cleanme"
echo "$image.restored"
}
# Process all image dumps in a given directory
check_all_images()
{
local dir
local extracted
dir="$1"
if [ -z "$dir" ]; then
dir=.
fi
_assert_path "$dir"
for image in $(find "$dir" \( -iname '*.img' -o \
-iname '*.img.xz' -o \
-iname '*.raw' -o \
-iname '*.raw.xz' \) | sort)
do
extracted=$(extract_image "$image")
check_image "$extracted"
rm -f "$extracted"
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_HELPER=
NEED_SUDO_VALIDATE=unknown
export SUDO_HELPER
export NEED_SUDO_VALIDATE
root_helper()
{
if [ $UID -eq 0 ]; then
"$@"
else
if [ "$NEED_SUDO_VALIDATE" = 'yes' ]; then
sudo -v -n &>/dev/null || \
_not_run "Need to validate sudo credentials"
sudo -n "$@"
elif [ "$NEED_SUDO_VALIDATE" = 'no' ]; then
sudo -n /bin/true &> /dev/null || \
_not_run "Need to validate sudo user settings"
sudo -n "$@"
else
# should not happen
_not_run "Need to validate root privileges"
fi
fi
}
setup_root_helper()
{
if [ $UID -eq 0 -o -n "$SUDO_HELPER" ]; then
return
fi
# Test for old sudo or special settings, which make sudo -v fail even
# if user setting is NOPASSWD
sudo -n /bin/true &>/dev/null && NEED_SUDO_VALIDATE=no
# Newer sudo or default sudo setting
sudo -v -n &>/dev/null && NEED_SUDO_VALIDATE=yes
if [ "$NEED_SUDO_VALIDATE" = 'unknown' ]; then
_not_run "Need to validate root privileges"
fi
SUDO_HELPER=root_helper
}
prepare_test_dev()
{
# num[K/M/G/T...]
local size="$1"
[[ "$size" ]] || size='2G'
# Still truncate it to new size
if [ -n "$TEST_DEV" ]; then
truncate -s 0 "$TEST_DEV"
truncate -s "$size" "$TEST_DEV"
return;
fi
echo "\$TEST_DEV not given, using $TEST_TOP/test.img as fallback" >> \
"$RESULTS"
TEST_DEV="$TEST_TOP/test.img"
truncate -s 0 "$TEST_DEV"
truncate -s "$size" "$TEST_DEV" || _not_run "create file for loop device failed"
}
# Create filesystem on $TEST_DEV with given options,
# do not use for multi-device filesystem
# $1-$n: optional, default is -f
run_check_mkfs_test_dev()
{
setup_root_helper
# check accidental files/devices passed
for opt in "$@"; do
if [ -f "$opt" -o -b "$opt" ]; then
_fail "ERROR: unexpected option for run_check_mkfs_test_dev: device"
fi
done
run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f "$@" "$TEST_DEV"
}
run_check_mount_test_dev()
{
setup_root_helper
local loop_opt
if [[ -b "$TEST_DEV" ]]; then
loop_opt=""
elif [[ -f "$TEST_DEV" ]]; then
loop_opt="-o loop"
else
_fail "Invalid \$TEST_DEV: $TEST_DEV"
fi
[[ -d "$TEST_MNT" ]] || {
_fail "Invalid \$TEST_MNT: $TEST_MNT"
}
run_check $SUDO_HELPER mount -t btrfs $loop_opt "$@" "$TEST_DEV" "$TEST_MNT"
}
# $1-$n: optional paths to unmount, otherwise fallback to TEST_DEV
run_check_umount_test_dev()
{
setup_root_helper
if [ "$#" = 0 ]; then
set -- "$TEST_DEV"
fi
run_check $SUDO_HELPER umount "$@"
}
check_kernel_support()
{
if ! grep -iq 'btrfs' /proc/filesystems; then
run_check $SUDO_HELPER modprobe btrfs
if ! grep -iq 'btrfs' /proc/filesystems; then
echo \
"WARNING: btrfs filesystem not found in /proc/filesystems, some tests might fail"
return 1
fi
fi
return 0
}
# compare running kernel version to the given parameter, return success
# if running is newer than requested (let caller decide if to fail or skip)
# $1: minimum version of running kernel in major.minor format (eg. 4.19)
check_min_kernel_version()
{
local unamemajor
local unameminor
local argmajor
local argminor
# 4.19.1-1-default
uname=$(uname -r)
# 4.19.1
uname=${uname%%-*}
IFS=. read unamemajor unameminor tmp <<< "$uname"
IFS=. read argmajor argminor tmp <<< "$1"
# "compare versions: ${unamemajor}.${unameminor} ? ${argmajor}.${argminor}"
[ "$unamemajor" -lt "$argmajor" ] || return 1
[ "$unameminor" -lt "$argminor" ] || return 1
return 0
}
# Get subvolume id for specified path
_get_subvolid()
{
# run_check_stdout may have INSTRUMENT polluting the output, we need to
# filter the output
run_check_stdout "$TOP/btrfs" inspect-internal rootid "$1" | \
grep -e "^[[:digit:]]\+$"
}
# compare running kernel version to the given parameter, return success
# if running is newer than requested (let caller decide if to fail or skip)
# $1: minimum version of running kernel in major.minor format (eg. 4.19)
check_min_kernel_version()
{
local unamemajor
local unameminor
local argmajor
local argminor
# 4.19.1-1-default
uname=$(uname -r)
# 4.19.1
uname=${uname%%-*}
IFS=. read unamemajor unameminor tmp <<< "$uname"
IFS=. read argmajor argminor tmp <<< "$1"
# "compare versions: ${unamemajor}.${unameminor} ? ${argmajor}.${argminor}"
[ "$unamemajor" -ge "$argmajor" ] || return 1
[ "$unameminor" -ge "$argminor" ] || return 1
return 0
}
# how many files to create.
DATASET_SIZE=50
generate_dataset() {
dataset_type="$1"
dirpath=$TEST_MNT/$dataset_type
run_check $SUDO_HELPER mkdir -p "$dirpath"
case "$dataset_type" in
small)
for num in $(seq 1 "$DATASET_SIZE"); do
run_check $SUDO_HELPER dd if=/dev/urandom of="$dirpath/$dataset_type.$num" bs=10K \
count=1 status=noxfer >/dev/null 2>&1
done
;;
hardlink)
for num in $(seq 1 "$DATASET_SIZE"); do
run_check $SUDO_HELPER touch "$dirpath/$dataset_type.$num"
run_check $SUDO_HELPER ln "$dirpath/$dataset_type.$num" "$dirpath/hlink.$num"
done
;;
fast_symlink)
for num in $(seq 1 "$DATASET_SIZE"); do
run_check $SUDO_HELPER touch "$dirpath/$dataset_type.$num"
run_check cd "$dirpath" && \
$SUDO_HELPER ln -s "$dataset_type.$num" "$dirpath/slink.$num" && \
cd /
done
;;
brokenlink)
for num in $(seq 1 "$DATASET_SIZE"); do
run_check $SUDO_HELPER ln -s "$dirpath/$dataset_type.$num" "$dirpath/blink.$num"
done
;;
perm)
for modes in 777 775 755 750 700 666 664 644 640 600 444 440 400 000 \
1777 1775 1755 1750 1700 1666 1664 1644 1640 1600 1444 1440 1400 1000 \
2777 2775 2755 2750 2700 2666 2664 2644 2640 2600 2444 2440 2400 2000 \
4777 4775 4755 4750 4700 4666 4664 4644 4640 4600 4444 4440 4400 4000; do
run_check $SUDO_HELPER touch "$dirpath/$dataset_type.$modes"
run_check $SUDO_HELPER chmod "$modes" "$dirpath/$dataset_type.$modes"
done
;;
sparse)
for num in $(seq 1 "$DATASET_SIZE"); do
run_check $SUDO_HELPER dd if=/dev/urandom of="$dirpath/$dataset_type.$num" bs=10K \
count=1 status=noxfer >/dev/null 2>&1
run_check $SUDO_HELPER truncate -s 500K "$dirpath/$dataset_type.$num"
run_check $SUDO_HELPER dd if=/dev/urandom of="$dirpath/$dataset_type.$num" bs=10K \
oflag=append conv=notrunc count=1 status=noxfer >/dev/null 2>&1
run_check $SUDO_HELPER truncate -s 800K "$dirpath/$dataset_type.$num"
done
;;
acls)
for num in $(seq 1 "$DATASET_SIZE"); do
run_check $SUDO_HELPER touch "$dirpath/$dataset_type.$num"
run_check $SUDO_HELPER setfacl -m "u:root:x" "$dirpath/$dataset_type.$num"
run_check $SUDO_HELPER setfattr -n user.foo -v "bar$num" "$dirpath/$dataset_type.$num"
done
;;
fifo)
for num in $(seq 1 "$DATASET_SIZE"); do
run_check $SUDO_HELPER mkfifo "$dirpath/$dataset_type.$num"
done
;;
slow_symlink)
long_filename=`date +%s | sha256sum | cut -f1 -d ' '`
run_check $SUDO_HELPER touch "$dirpath/$long_filename"
for num in $(seq 1 "$DATASET_SIZE"); do
run_check $SUDO_HELPER ln -s "$dirpath/$long_filename" "$dirpath/slow_slink.$num"
done
;;
large)
run_check $SUDO_HELPER dd if=/dev/urandom bs=32M count=1 \
of="$dirpath/$dataset_type" status=noxfer >/dev/null 2>&1
;;
esac
}
# prepare environment for loop devices, set up the following variables
# - nloopdevs -- number of desired devices
# - loopdevs -- array containing paths to all devices (after prepare is called)
# - loopdev_prefix -- file backed images starting with this string, 'img' by default
#
# $1: number of loop devices to be set up
setup_loopdevs()
{
if [ -z "$1" ]; then
_fail "setup_loopdevs needs a number"
fi
nloopdevs="$1"
loopdev_prefix=img
declare -a loopdevs
}
# create all loop devices from a given loopdev environment
prepare_loopdevs()
{
for i in `seq $nloopdevs`; do
touch "$loopdev_prefix$i"
chmod a+rw "$loopdev_prefix$i"
truncate -s0 "$loopdev_prefix$i"
truncate -s2g "$loopdev_prefix$i"
loopdevs[$i]=`run_check_stdout $SUDO_HELPER losetup --find --show "$loopdev_prefix$i"`
done
}
# detach loop devices and reset their size to 0, delete the files afterwards
cleanup_loopdevs()
{
for dev in ${loopdevs[@]}; do
run_check $SUDO_HELPER losetup -d "$dev"
done
for i in `seq $nloopdevs`; do
truncate -s0 "$loopdev_prefix$i"
rm -- "$loopdev_prefix$i"
done
run_check $SUDO_HELPER losetup --all
}
init_env()
{
TEST_MNT="${TEST_MNT:-$TEST_TOP/mnt}"
export TEST_MNT
mkdir -p "$TEST_MNT" || { echo "Failed mkdir -p $TEST_MNT"; exit 1; }
source "$TEST_TOP/common.local"
if [ "$TEST_ENABLE_OVERRIDE" = 'true' -a -n "$RESULTS" ]; then
echo "INCLUDE common.local" >> "$RESULTS"
echo " check: $TEST_ARGS_CHECK" >> "$RESULTS"
echo " mkfs: $TEST_ARGS_MKFS" >> "$RESULTS"
echo " convert: $TEST_ARGS_CONVERT" >> "$RESULTS"
fi
}
# Catch critical warning messages in test results
check_test_results()
{
local results="$1"
local testname="$2"
# Check subpage related warning
if grep -q "not nodesize aligned" "$results"; then
_fail "found subpage related warning for case $testname"
fi
}
init_env