btrfs-progs/tests/misc-tests/053-receive-write-encoded/test.sh
David Sterba 9957162313 btrfs-progs: tests: update or fix shell script coding style
Fix the following issues in the test suite:

- lack of quoting for variables
- declare function variables local when missing (prevent accidental
  overwrite of global variables)
- for variables with underscore in the name use plain "$VAR_NAME"
  instead of { } (unless necessary)
- minor style adjustments like moving quotes to the end of the same
  string

Signed-off-by: David Sterba <dsterba@suse.com>
2024-06-24 19:18:08 +02:00

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#!/bin/bash
#
# test that we can send and receive encoded writes for three modes of
# transparent compression: zlib, lzo, and zstd.
source "$TEST_TOP/common" || exit
check_prereq mkfs.btrfs
check_prereq btrfs
setup_root_helper
prepare_test_dev
if ! [ -f "/sys/fs/btrfs/features/send_stream_version" ] ||
grep -q '1$' "/sys/fs/btrfs/features/send_stream_version"; then
_not_run "kernel does not support send stream >1"
exit
fi
here=`pwd`
# assumes the filesystem exists, and does mount, write, snapshot, send, unmount
# for the specified encoding option
send_one() {
local algorithm
local file
local subv
local snap
algorithm="$1"
shift
file="$1"
shift
subv="subv-$algorithm"
snap="snap-$algorithm"
run_check_mount_test_dev "-o" "compress-force=$algorithm"
cd "$TEST_MNT" || _fail "cannot chdir to TEST_MNT"
_mktemp_local "$file"
run_check $SUDO_HELPER "$TOP/btrfs" subvolume create "$subv"
run_check $SUDO_HELPER dd if=/dev/zero of="$subv/file1" bs=1M count=1
run_check $SUDO_HELPER dd if=/dev/zero of="$subv/file2" bs=500K count=1
run_check $SUDO_HELPER "$TOP/btrfs" subvolume snapshot -r "$subv" "$snap"
run_check $SUDO_HELPER "$TOP/btrfs" send -f "$file" "$snap" "$@"
cd "$here" || _fail "cannot chdir back to test directory"
run_check_umount_test_dev
}
receive_one() {
local str
str="$1"
shift
run_check_mkfs_test_dev
run_check_mount_test_dev
run_check $SUDO_HELPER "$TOP/btrfs" receive "$@" -v -f "$str" "$TEST_MNT"
run_check_umount_test_dev
run_check rm -f -- "$str"
}
test_one_write_encoded() {
local str
local algorithm
algorithm="$1"
shift
str="$here/stream-$algorithm.stream"
run_check_mkfs_test_dev
send_one "$algorithm" "$str" --compressed-data
receive_one "$str" "$@"
}
test_one_stream_v1() {
local str
local algorithm
algorithm="$1"
shift
str="$here/stream-$algorithm.stream"
run_check_mkfs_test_dev
send_one "$algorithm" "$str" --proto 1
receive_one "$str" "$@"
}
test_mix_write_encoded() {
local strzlib
local strlzo
local strzstd
strzlib="$here/stream-zlib.stream"
strlzo="$here/stream-lzo.stream"
strzstd="$here/stream-zstd.stream"
run_check_mkfs_test_dev
send_one "zlib" "$strzlib" --compressed-data
send_one "lzo" "$strlzo" --compressed-data
send_one "zstd" "$strzstd" --compressed-data
receive_one "$strzlib"
receive_one "$strlzo"
receive_one "$strzstd"
}
test_one_write_encoded "zlib"
test_one_write_encoded "lzo"
test_one_write_encoded "zstd"
# with decompression forced
test_one_write_encoded "zlib" "--force-decompress"
test_one_write_encoded "lzo" "--force-decompress"
test_one_write_encoded "zstd" "--force-decompress"
# send stream v1
test_one_stream_v1 "zlib"
test_one_stream_v1 "lzo"
test_one_stream_v1 "zstd"
# files use a mix of compression algorithms
test_mix_write_encoded