btrfs-progs/tests/common
Anand Jain 1fb1ae8ebb btrfs-progs: tests: add helper to check if ACLs are supported
Some test cases are failing when ACL is not compiled in the system.
Instead, they should be marked as 'not_run'.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2023-07-26 14:59:10 +02:00

924 lines
23 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-mayfail-stdout.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-mustfail-stdout.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-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 [ "$NEED_SUDO_VALIDATE" = 'unknown' ]; then
_not_run "Need to validate root privileges"
fi
SUDO_HELPER=root_helper
}
# Check if btrfs is compiled with CONFIG_BTRFS_FS_POSIX_ACL, may need TEST_DEV.
check_kernel_support_acl()
{
if [ -f /proc/config.gz ] && \
! zgrep -q "^CONFIG_BTRFS_FS_POSIX_ACL=y" /proc/config.gz; then
_not_run "ACL is not compiled in"
fi
run_check_mkfs_test_dev
run_check_mount_test_dev
if grep "$TEST_MNT" /proc/self/mounts | grep -q noacl; then
run_check_umount_test_dev
_not_run "ACL is not compiled in"
fi
run_check_umount_test_dev
}
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)
# $1: minimum version of running kernel in major.minor format (eg. 4.19)
#
# Return 0 if we meet the minimal version requirement.
# Return 1 if not.
check_min_kernel_version()
{
local unamemajor
local unameminor
local argmajor
local argminor
# 4.19.1-1-default
uname=$(uname -r)
# 4.19.1
uname=${uname%%-*}
IFS=. read unamemajor unameminor tmp <<< "$uname"
IFS=. read argmajor argminor tmp <<< "$1"
# If our major > target major, we definitely meet the requirement.
# If our major < target major, we definitely don't meet the requirement.
if [ "$unamemajor" -gt "$argmajor" ]; then
return 0
fi
if [ "$unamemajor" -lt "$argmajor" ]; then
return 1
fi
# Only when our major is the same as the target, we need to compare
# the minor number.
# In this case, if our minor >= target minor, we meet the requirement.
if [ "$unameminor" -ge "$argminor" ]; then
return 0;
fi
return 1
}
# Get subvolume id for specified path
_get_subvolid()
{
# run_check_stdout may have INSTRUMENT polluting the output, we need to
# filter the output
run_check_stdout "$TOP/btrfs" inspect-internal rootid "$1" | \
grep -e "^[[:digit:]]\+$"
}
# 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
}
# Create at temporary file in $TMPDIR
# $1: optional identifier that'll be part of the name
_mktemp() {
local tmp
local name
name="btrfs-progs${1:+-$1}.XXXXXX"
_log "Create temporary file $name"
tmp=$(mktemp --tmpdir "$name")
echo -n "$tmp"
}
# Create at temporary directory in $TMPDIR
# $1: optional identifier that'll be part of the name
_mktemp_dir() {
local tmp
local name
name="btrfs-progs${1:+-$1}.XXXXXX"
_log "Create temporary file $name"
tmp=$(mktemp -d --tmpdir "$name")
echo -n "$tmp"
}
# Create temporary file of the given name in the local test directory (eg. when
# it's a large image and not suitable for /tmp), this also supports NFS where
# the file needs to be created by regular user and made available for roo
# $1: file name
# $2: optional size (argument suitable for truncate)
_mktemp_local() {
local name
local size
name="$1"
size="${2:-0}"
_log "Create local temporary file $name"
rm -f -- "$name"
run_check truncate -s "$size" -- "$name"
run_check chmod a+w -- "$name"
}
init_env