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# SPDX-License-Identifier: GPL-2.0+
# Copyright (C) 2022 Huang Jianan <jnhuang95@gmail.com>
# Author: Huang Jianan <jnhuang95@gmail.com>
import os
import pytest
import shutil
import subprocess
EROFS_SRC_DIR = 'erofs_src_dir'
EROFS_IMAGE_NAME = 'erofs.img'
def generate_file(name, size):
"""
Generates a file filled with 'x'.
"""
content = 'x' * size
file = open(name, 'w')
file.write(content)
file.close()
def make_erofs_image(build_dir):
"""
Makes the EROFS images used for the test.
The image is generated at build_dir with the following structure:
erofs_src_dir/
├── f4096
├── f7812
├── subdir/
│ └── subdir-file
├── symdir -> subdir
└── symfile -> f5096
"""
root = os.path.join(build_dir, EROFS_SRC_DIR)
os.makedirs(root)
# 4096: uncompressed file
generate_file(os.path.join(root, 'f4096'), 4096)
# 7812: Compressed file
generate_file(os.path.join(root, 'f7812'), 7812)
# sub-directory with a single file inside
subdir_path = os.path.join(root, 'subdir')
os.makedirs(subdir_path)
generate_file(os.path.join(subdir_path, 'subdir-file'), 100)
# symlink
os.symlink('subdir', os.path.join(root, 'symdir'))
os.symlink('f7812', os.path.join(root, 'symfile'))
input_path = os.path.join(build_dir, EROFS_SRC_DIR)
output_path = os.path.join(build_dir, EROFS_IMAGE_NAME)
args = ' '.join([output_path, input_path])
subprocess.run(['mkfs.erofs -zlz4 ' + args], shell=True, check=True,
stdout=subprocess.DEVNULL)
def clean_erofs_image(build_dir):
"""
Deletes the image and src_dir at build_dir.
"""
path = os.path.join(build_dir, EROFS_SRC_DIR)
shutil.rmtree(path)
image_path = os.path.join(build_dir, EROFS_IMAGE_NAME)
os.remove(image_path)
def erofs_ls_at_root(u_boot_console):
"""
Test if all the present files and directories were listed.
"""
no_slash = u_boot_console.run_command('erofsls host 0')
slash = u_boot_console.run_command('erofsls host 0 /')
assert no_slash == slash
expected_lines = ['./', '../', '4096 f4096', '7812 f7812', 'subdir/',
'<SYM> symdir', '<SYM> symfile', '4 file(s), 3 dir(s)']
output = u_boot_console.run_command('erofsls host 0')
for line in expected_lines:
assert line in output
def erofs_ls_at_subdir(u_boot_console):
"""
Test if the path resolution works.
"""
expected_lines = ['./', '../', '100 subdir-file', '1 file(s), 2 dir(s)']
output = u_boot_console.run_command('erofsls host 0 subdir')
for line in expected_lines:
assert line in output
def erofs_ls_at_symlink(u_boot_console):
"""
Test if the symbolic link's target resolution works.
"""
output = u_boot_console.run_command('erofsls host 0 symdir')
output_subdir = u_boot_console.run_command('erofsls host 0 subdir')
assert output == output_subdir
expected_lines = ['./', '../', '100 subdir-file', '1 file(s), 2 dir(s)']
for line in expected_lines:
assert line in output
def erofs_ls_at_non_existent_dir(u_boot_console):
"""
Test if the EROFS support will crash when get a nonexistent directory.
"""
out_non_existent = u_boot_console.run_command('erofsls host 0 fff')
out_not_dir = u_boot_console.run_command('erofsls host 0 f1000')
assert out_non_existent == out_not_dir
assert '' in out_non_existent
def erofs_load_files(u_boot_console, files, sizes, address):
"""
Loads files and asserts their checksums.
"""
build_dir = u_boot_console.config.build_dir
for (file, size) in zip(files, sizes):
out = u_boot_console.run_command('erofsload host 0 {} {}'.format(address, file))
# check if the right amount of bytes was read
assert size in out
# calculate u-boot file's checksum
out = u_boot_console.run_command('md5sum {} {}'.format(address, hex(int(size))))
u_boot_checksum = out.split()[-1]
# calculate original file's checksum
original_file_path = os.path.join(build_dir, EROFS_SRC_DIR + '/' + file)
out = subprocess.run(['md5sum ' + original_file_path], shell=True, check=True,
capture_output=True, text=True)
original_checksum = out.stdout.split()[0]
# compare checksum
assert u_boot_checksum == original_checksum
def erofs_load_files_at_root(u_boot_console):
"""
Test load file from the root directory.
"""
files = ['f4096', 'f7812']
sizes = ['4096', '7812']
address = '$kernel_addr_r'
erofs_load_files(u_boot_console, files, sizes, address)
def erofs_load_files_at_subdir(u_boot_console):
"""
Test load file from the subdirectory.
"""
files = ['subdir/subdir-file']
sizes = ['100']
address = '$kernel_addr_r'
erofs_load_files(u_boot_console, files, sizes, address)
def erofs_load_files_at_symlink(u_boot_console):
"""
Test load file from the symlink.
"""
files = ['symfile']
sizes = ['7812']
address = '$kernel_addr_r'
erofs_load_files(u_boot_console, files, sizes, address)
def erofs_load_non_existent_file(u_boot_console):
"""
Test if the EROFS support will crash when load a nonexistent file.
"""
address = '$kernel_addr_r'
file = 'non-existent'
out = u_boot_console.run_command('erofsload host 0 {} {}'.format(address, file))
assert 'Failed to load' in out
def erofs_run_all_tests(u_boot_console):
"""
Runs all test cases.
"""
erofs_ls_at_root(u_boot_console)
erofs_ls_at_subdir(u_boot_console)
erofs_ls_at_symlink(u_boot_console)
erofs_ls_at_non_existent_dir(u_boot_console)
erofs_load_files_at_root(u_boot_console)
erofs_load_files_at_subdir(u_boot_console)
erofs_load_files_at_symlink(u_boot_console)
erofs_load_non_existent_file(u_boot_console)
@pytest.mark.boardspec('sandbox')
@pytest.mark.buildconfigspec('cmd_fs_generic')
@pytest.mark.buildconfigspec('cmd_erofs')
@pytest.mark.buildconfigspec('fs_erofs')
@pytest.mark.requiredtool('mkfs.erofs')
@pytest.mark.requiredtool('md5sum')
def test_erofs(u_boot_console):
"""
Executes the erofs test suite.
"""
build_dir = u_boot_console.config.build_dir
# If the EFI subsystem is enabled and initialized, EFI subsystem tries to
# add EFI boot option when the new disk is detected. If there is no EFI
# System Partition exists, EFI subsystem outputs error messages and
# it ends up with test failure.
# Restart U-Boot to clear the previous state.
# TODO: Ideally EFI test cases need to be fixed, but it will
# increase the number of system reset.
u_boot_console.restart_uboot()
try:
# setup test environment
make_erofs_image(build_dir)
image_path = os.path.join(build_dir, EROFS_IMAGE_NAME)
u_boot_console.run_command('host bind 0 {}'.format(image_path))
# run all tests
erofs_run_all_tests(u_boot_console)
except:
clean_erofs_image(build_dir)
raise AssertionError
# clean test environment
clean_erofs_image(build_dir)
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