| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2015 Stephen Warren |
| # Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved. |
| |
| """ |
| Test operation of shell commands relating to environment variables. |
| """ |
| |
| import os |
| import os.path |
| from subprocess import call, CalledProcessError |
| import tempfile |
| |
| import pytest |
| import u_boot_utils |
| |
| # FIXME: This might be useful for other tests; |
| # perhaps refactor it into ConsoleBase or some other state object? |
| class StateTestEnv(object): |
| """Container that represents the state of all U-Boot environment variables. |
| This enables quick determination of existant/non-existant variable |
| names. |
| """ |
| |
| def __init__(self, u_boot_console): |
| """Initialize a new StateTestEnv object. |
| |
| Args: |
| u_boot_console: A U-Boot console. |
| |
| Returns: |
| Nothing. |
| """ |
| |
| self.u_boot_console = u_boot_console |
| self.get_env() |
| self.set_var = self.get_non_existent_var() |
| |
| def get_env(self): |
| """Read all current environment variables from U-Boot. |
| |
| Args: |
| None. |
| |
| Returns: |
| Nothing. |
| """ |
| |
| if self.u_boot_console.config.buildconfig.get( |
| 'config_version_variable', 'n') == 'y': |
| with self.u_boot_console.disable_check('main_signon'): |
| response = self.u_boot_console.run_command('printenv') |
| else: |
| response = self.u_boot_console.run_command('printenv') |
| self.env = {} |
| for l in response.splitlines(): |
| if not '=' in l: |
| continue |
| (var, value) = l.split('=', 1) |
| self.env[var] = value |
| |
| def get_existent_var(self): |
| """Return the name of an environment variable that exists. |
| |
| Args: |
| None. |
| |
| Returns: |
| The name of an environment variable. |
| """ |
| |
| for var in self.env: |
| return var |
| |
| def get_non_existent_var(self): |
| """Return the name of an environment variable that does not exist. |
| |
| Args: |
| None. |
| |
| Returns: |
| The name of an environment variable. |
| """ |
| |
| n = 0 |
| while True: |
| var = 'test_env_' + str(n) |
| if var not in self.env: |
| return var |
| n += 1 |
| |
| ste = None |
| @pytest.fixture(scope='function') |
| def state_test_env(u_boot_console): |
| """pytest fixture to provide a StateTestEnv object to tests.""" |
| |
| global ste |
| if not ste: |
| ste = StateTestEnv(u_boot_console) |
| return ste |
| |
| def unset_var(state_test_env, var): |
| """Unset an environment variable. |
| |
| This both executes a U-Boot shell command and updates a StateTestEnv |
| object. |
| |
| Args: |
| state_test_env: The StateTestEnv object to update. |
| var: The variable name to unset. |
| |
| Returns: |
| Nothing. |
| """ |
| |
| state_test_env.u_boot_console.run_command('setenv %s' % var) |
| if var in state_test_env.env: |
| del state_test_env.env[var] |
| |
| def set_var(state_test_env, var, value): |
| """Set an environment variable. |
| |
| This both executes a U-Boot shell command and updates a StateTestEnv |
| object. |
| |
| Args: |
| state_test_env: The StateTestEnv object to update. |
| var: The variable name to set. |
| value: The value to set the variable to. |
| |
| Returns: |
| Nothing. |
| """ |
| |
| bc = state_test_env.u_boot_console.config.buildconfig |
| if bc.get('config_hush_parser', None): |
| quote = '"' |
| else: |
| quote = '' |
| if ' ' in value: |
| pytest.skip('Space in variable value on non-Hush shell') |
| |
| state_test_env.u_boot_console.run_command( |
| 'setenv %s %s%s%s' % (var, quote, value, quote)) |
| state_test_env.env[var] = value |
| |
| def validate_empty(state_test_env, var): |
| """Validate that a variable is not set, using U-Boot shell commands. |
| |
| Args: |
| var: The variable name to test. |
| |
| Returns: |
| Nothing. |
| """ |
| |
| response = state_test_env.u_boot_console.run_command('echo ${%s}' % var) |
| assert response == '' |
| |
| def validate_set(state_test_env, var, value): |
| """Validate that a variable is set, using U-Boot shell commands. |
| |
| Args: |
| var: The variable name to test. |
| value: The value the variable is expected to have. |
| |
| Returns: |
| Nothing. |
| """ |
| |
| # echo does not preserve leading, internal, or trailing whitespace in the |
| # value. printenv does, and hence allows more complete testing. |
| response = state_test_env.u_boot_console.run_command('printenv %s' % var) |
| assert response == ('%s=%s' % (var, value)) |
| |
| def test_env_echo_exists(state_test_env): |
| """Test echoing a variable that exists.""" |
| |
| var = state_test_env.get_existent_var() |
| value = state_test_env.env[var] |
| validate_set(state_test_env, var, value) |
| |
| @pytest.mark.buildconfigspec('cmd_echo') |
| def test_env_echo_non_existent(state_test_env): |
| """Test echoing a variable that doesn't exist.""" |
| |
| var = state_test_env.set_var |
| validate_empty(state_test_env, var) |
| |
| def test_env_printenv_non_existent(state_test_env): |
| """Test printenv error message for non-existant variables.""" |
| |
| var = state_test_env.set_var |
| c = state_test_env.u_boot_console |
| with c.disable_check('error_notification'): |
| response = c.run_command('printenv %s' % var) |
| assert response == '## Error: "%s" not defined' % var |
| |
| @pytest.mark.buildconfigspec('cmd_echo') |
| def test_env_unset_non_existent(state_test_env): |
| """Test unsetting a nonexistent variable.""" |
| |
| var = state_test_env.get_non_existent_var() |
| unset_var(state_test_env, var) |
| validate_empty(state_test_env, var) |
| |
| def test_env_set_non_existent(state_test_env): |
| """Test set a non-existant variable.""" |
| |
| var = state_test_env.set_var |
| value = 'foo' |
| set_var(state_test_env, var, value) |
| validate_set(state_test_env, var, value) |
| |
| def test_env_set_existing(state_test_env): |
| """Test setting an existant variable.""" |
| |
| var = state_test_env.set_var |
| value = 'bar' |
| set_var(state_test_env, var, value) |
| validate_set(state_test_env, var, value) |
| |
| @pytest.mark.buildconfigspec('cmd_echo') |
| def test_env_unset_existing(state_test_env): |
| """Test unsetting a variable.""" |
| |
| var = state_test_env.set_var |
| unset_var(state_test_env, var) |
| validate_empty(state_test_env, var) |
| |
| def test_env_expansion_spaces(state_test_env): |
| """Test expanding a variable that contains a space in its value.""" |
| |
| var_space = None |
| var_test = None |
| try: |
| var_space = state_test_env.get_non_existent_var() |
| set_var(state_test_env, var_space, ' ') |
| |
| var_test = state_test_env.get_non_existent_var() |
| value = ' 1${%(var_space)s}${%(var_space)s} 2 ' % locals() |
| set_var(state_test_env, var_test, value) |
| value = ' 1 2 ' |
| validate_set(state_test_env, var_test, value) |
| finally: |
| if var_space: |
| unset_var(state_test_env, var_space) |
| if var_test: |
| unset_var(state_test_env, var_test) |
| |
| @pytest.mark.buildconfigspec('cmd_importenv') |
| def test_env_import_checksum_no_size(state_test_env): |
| """Test that omitted ('-') size parameter with checksum validation fails the |
| env import function. |
| """ |
| c = state_test_env.u_boot_console |
| ram_base = u_boot_utils.find_ram_base(state_test_env.u_boot_console) |
| addr = '%08x' % ram_base |
| |
| with c.disable_check('error_notification'): |
| response = c.run_command('env import -c %s -' % addr) |
| assert response == '## Error: external checksum format must pass size' |
| |
| @pytest.mark.buildconfigspec('cmd_importenv') |
| def test_env_import_whitelist_checksum_no_size(state_test_env): |
| """Test that omitted ('-') size parameter with checksum validation fails the |
| env import function when variables are passed as parameters. |
| """ |
| c = state_test_env.u_boot_console |
| ram_base = u_boot_utils.find_ram_base(state_test_env.u_boot_console) |
| addr = '%08x' % ram_base |
| |
| with c.disable_check('error_notification'): |
| response = c.run_command('env import -c %s - foo1 foo2 foo4' % addr) |
| assert response == '## Error: external checksum format must pass size' |
| |
| @pytest.mark.buildconfigspec('cmd_exportenv') |
| @pytest.mark.buildconfigspec('cmd_importenv') |
| def test_env_import_whitelist(state_test_env): |
| """Test importing only a handful of env variables from an environment.""" |
| c = state_test_env.u_boot_console |
| ram_base = u_boot_utils.find_ram_base(state_test_env.u_boot_console) |
| addr = '%08x' % ram_base |
| |
| set_var(state_test_env, 'foo1', 'bar1') |
| set_var(state_test_env, 'foo2', 'bar2') |
| set_var(state_test_env, 'foo3', 'bar3') |
| |
| c.run_command('env export %s' % addr) |
| |
| unset_var(state_test_env, 'foo1') |
| set_var(state_test_env, 'foo2', 'test2') |
| set_var(state_test_env, 'foo4', 'bar4') |
| |
| # no foo1 in current env, foo2 overridden, foo3 should be of the value |
| # before exporting and foo4 should be of the value before importing. |
| c.run_command('env import %s - foo1 foo2 foo4' % addr) |
| |
| validate_set(state_test_env, 'foo1', 'bar1') |
| validate_set(state_test_env, 'foo2', 'bar2') |
| validate_set(state_test_env, 'foo3', 'bar3') |
| validate_set(state_test_env, 'foo4', 'bar4') |
| |
| # Cleanup test environment |
| unset_var(state_test_env, 'foo1') |
| unset_var(state_test_env, 'foo2') |
| unset_var(state_test_env, 'foo3') |
| unset_var(state_test_env, 'foo4') |
| |
| @pytest.mark.buildconfigspec('cmd_exportenv') |
| @pytest.mark.buildconfigspec('cmd_importenv') |
| def test_env_import_whitelist_delete(state_test_env): |
| |
| """Test importing only a handful of env variables from an environment, with. |
| deletion if a var A that is passed to env import is not in the |
| environment to be imported. |
| """ |
| c = state_test_env.u_boot_console |
| ram_base = u_boot_utils.find_ram_base(state_test_env.u_boot_console) |
| addr = '%08x' % ram_base |
| |
| set_var(state_test_env, 'foo1', 'bar1') |
| set_var(state_test_env, 'foo2', 'bar2') |
| set_var(state_test_env, 'foo3', 'bar3') |
| |
| c.run_command('env export %s' % addr) |
| |
| unset_var(state_test_env, 'foo1') |
| set_var(state_test_env, 'foo2', 'test2') |
| set_var(state_test_env, 'foo4', 'bar4') |
| |
| # no foo1 in current env, foo2 overridden, foo3 should be of the value |
| # before exporting and foo4 should be empty. |
| c.run_command('env import -d %s - foo1 foo2 foo4' % addr) |
| |
| validate_set(state_test_env, 'foo1', 'bar1') |
| validate_set(state_test_env, 'foo2', 'bar2') |
| validate_set(state_test_env, 'foo3', 'bar3') |
| validate_empty(state_test_env, 'foo4') |
| |
| # Cleanup test environment |
| unset_var(state_test_env, 'foo1') |
| unset_var(state_test_env, 'foo2') |
| unset_var(state_test_env, 'foo3') |
| unset_var(state_test_env, 'foo4') |
| |
| @pytest.mark.buildconfigspec('cmd_nvedit_info') |
| def test_env_info(state_test_env): |
| |
| """Test 'env info' command with all possible options. |
| """ |
| c = state_test_env.u_boot_console |
| |
| response = c.run_command('env info') |
| nb_line = 0 |
| for l in response.split('\n'): |
| if 'env_valid = ' in l: |
| assert '= invalid' in l or '= valid' in l or '= redundant' in l |
| nb_line += 1 |
| elif 'env_ready =' in l or 'env_use_default =' in l: |
| assert '= true' in l or '= false' in l |
| nb_line += 1 |
| else: |
| assert True |
| assert nb_line == 3 |
| |
| response = c.run_command('env info -p -d') |
| assert 'Default environment is used' in response or \ |
| "Environment was loaded from persistent storage" in response |
| assert 'Environment can be persisted' in response or \ |
| "Environment cannot be persisted" in response |
| |
| response = c.run_command('env info -p -d -q') |
| assert response == "" |
| |
| response = c.run_command('env info -p -q') |
| assert response == "" |
| |
| response = c.run_command('env info -d -q') |
| assert response == "" |
| |
| @pytest.mark.boardspec('sandbox') |
| @pytest.mark.buildconfigspec('cmd_nvedit_info') |
| @pytest.mark.buildconfigspec('cmd_echo') |
| def test_env_info_sandbox(state_test_env): |
| """Test 'env info' command result with several options on sandbox |
| with a known ENV configuration: ready & default & persistent |
| """ |
| c = state_test_env.u_boot_console |
| |
| response = c.run_command('env info') |
| assert 'env_ready = true' in response |
| assert 'env_use_default = true' in response |
| |
| response = c.run_command('env info -p -d') |
| assert 'Default environment is used' in response |
| assert 'Environment cannot be persisted' in response |
| |
| response = c.run_command('env info -d -q') |
| response = c.run_command('echo $?') |
| assert response == "0" |
| |
| response = c.run_command('env info -p -q') |
| response = c.run_command('echo $?') |
| assert response == "1" |
| |
| response = c.run_command('env info -d -p -q') |
| response = c.run_command('echo $?') |
| assert response == "1" |
| |
| def mk_env_ext4(state_test_env): |
| |
| """Create a empty ext4 file system volume.""" |
| c = state_test_env.u_boot_console |
| filename = 'env.ext4.img' |
| persistent = c.config.persistent_data_dir + '/' + filename |
| fs_img = c.config.result_dir + '/' + filename |
| |
| if os.path.exists(persistent): |
| c.log.action('Disk image file ' + persistent + ' already exists') |
| else: |
| # Some distributions do not add /sbin to the default PATH, where mkfs.ext4 lives |
| os.environ["PATH"] += os.pathsep + '/sbin' |
| try: |
| u_boot_utils.run_and_log(c, 'dd if=/dev/zero of=%s bs=1M count=16' % persistent) |
| u_boot_utils.run_and_log(c, 'mkfs.ext4 %s' % persistent) |
| sb_content = u_boot_utils.run_and_log(c, 'tune2fs -l %s' % persistent) |
| if 'metadata_csum' in sb_content: |
| u_boot_utils.run_and_log(c, 'tune2fs -O ^metadata_csum %s' % persistent) |
| except CalledProcessError: |
| call('rm -f %s' % persistent, shell=True) |
| raise |
| |
| u_boot_utils.run_and_log(c, ['cp', '-f', persistent, fs_img]) |
| return fs_img |
| |
| @pytest.mark.boardspec('sandbox') |
| @pytest.mark.buildconfigspec('cmd_echo') |
| @pytest.mark.buildconfigspec('cmd_nvedit_info') |
| @pytest.mark.buildconfigspec('cmd_nvedit_load') |
| @pytest.mark.buildconfigspec('cmd_nvedit_select') |
| @pytest.mark.buildconfigspec('env_is_in_ext4') |
| def test_env_ext4(state_test_env): |
| |
| """Test ENV in EXT4 on sandbox.""" |
| c = state_test_env.u_boot_console |
| fs_img = '' |
| try: |
| fs_img = mk_env_ext4(state_test_env) |
| |
| c.run_command('host bind 0 %s' % fs_img) |
| |
| response = c.run_command('ext4ls host 0:0') |
| assert 'uboot.env' not in response |
| |
| # force env location: EXT4 (prio 1 in sandbox) |
| response = c.run_command('env select EXT4') |
| assert 'Select Environment on EXT4: OK' in response |
| |
| response = c.run_command('env save') |
| assert 'Saving Environment to EXT4' in response |
| |
| response = c.run_command('env load') |
| assert 'Loading Environment from EXT4... OK' in response |
| |
| response = c.run_command('ext4ls host 0:0') |
| assert '8192 uboot.env' in response |
| |
| response = c.run_command('env info') |
| assert 'env_valid = valid' in response |
| assert 'env_ready = true' in response |
| assert 'env_use_default = false' in response |
| |
| response = c.run_command('env info -p -d') |
| assert 'Environment was loaded from persistent storage' in response |
| assert 'Environment can be persisted' in response |
| |
| response = c.run_command('env info -d -q') |
| assert response == "" |
| response = c.run_command('echo $?') |
| assert response == "1" |
| |
| response = c.run_command('env info -p -q') |
| assert response == "" |
| response = c.run_command('echo $?') |
| assert response == "0" |
| |
| response = c.run_command('env erase') |
| assert 'OK' in response |
| |
| response = c.run_command('env load') |
| assert 'Loading Environment from EXT4... ' in response |
| assert 'bad CRC, using default environment' in response |
| |
| response = c.run_command('env info') |
| assert 'env_valid = invalid' in response |
| assert 'env_ready = true' in response |
| assert 'env_use_default = true' in response |
| |
| response = c.run_command('env info -p -d') |
| assert 'Default environment is used' in response |
| assert 'Environment can be persisted' in response |
| |
| # restore env location: NOWHERE (prio 0 in sandbox) |
| response = c.run_command('env select nowhere') |
| assert 'Select Environment on nowhere: OK' in response |
| |
| response = c.run_command('env load') |
| assert 'Loading Environment from nowhere... OK' in response |
| |
| response = c.run_command('env info') |
| assert 'env_valid = invalid' in response |
| assert 'env_ready = true' in response |
| assert 'env_use_default = true' in response |
| |
| response = c.run_command('env info -p -d') |
| assert 'Default environment is used' in response |
| assert 'Environment cannot be persisted' in response |
| |
| finally: |
| if fs_img: |
| call('rm -f %s' % fs_img, shell=True) |
| |
| def test_env_text(u_boot_console): |
| """Test the script that converts the environment to a text file""" |
| |
| def check_script(intext, expect_val): |
| """Check a test case |
| |
| Args: |
| intext: Text to pass to the script |
| expect_val: Expected value of the CONFIG_EXTRA_ENV_TEXT string, or |
| None if we expect it not to be defined |
| """ |
| with tempfile.TemporaryDirectory() as path: |
| fname = os.path.join(path, 'infile') |
| with open(fname, 'w') as inf: |
| print(intext, file=inf) |
| result = u_boot_utils.run_and_log(cons, ['awk', '-f', script, fname]) |
| if expect_val is not None: |
| expect = '#define CONFIG_EXTRA_ENV_TEXT "%s"\n' % expect_val |
| assert result == expect |
| else: |
| assert result == '' |
| |
| cons = u_boot_console |
| script = os.path.join(cons.config.source_dir, 'scripts', 'env2string.awk') |
| |
| # simple script with a single var |
| check_script('fred=123', 'fred=123\\0') |
| |
| # no vars |
| check_script('', None) |
| |
| # two vars |
| check_script('''fred=123 |
| ernie=456''', 'fred=123\\0ernie=456\\0') |
| |
| # blank lines |
| check_script('''fred=123 |
| |
| |
| ernie=456 |
| |
| ''', 'fred=123\\0ernie=456\\0') |
| |
| # append |
| check_script('''fred=123 |
| ernie=456 |
| fred+= 456''', 'fred=123 456\\0ernie=456\\0') |
| |
| # append from empty |
| check_script('''fred= |
| ernie=456 |
| fred+= 456''', 'fred= 456\\0ernie=456\\0') |
| |
| # variable with + in it |
| check_script('fred+ernie=123', 'fred+ernie=123\\0') |
| |
| # ignores variables that are empty |
| check_script('''fred= |
| fred+= |
| ernie=456''', 'ernie=456\\0') |
| |
| # single-character env name |
| check_script('''f=123 |
| e=456 |
| f+= 456''', 'e=456\\0f=123 456\\0') |
| |
| # contains quotes |
| check_script('''fred="my var" |
| ernie=another"''', 'fred=\\"my var\\"\\0ernie=another\\"\\0') |
| |
| # variable name ending in + |
| check_script('''fred\\+=my var |
| fred++= again''', 'fred+=my var again\\0') |
| |
| # variable name containing + |
| check_script('''fred+jane=both |
| fred+jane+=again |
| ernie=456''', 'fred+jane=bothagain\\0ernie=456\\0') |
| |
| # multi-line vars - new vars always start at column 1 |
| check_script('''fred=first |
| second |
| \tthird with tab |
| |
| after blank |
| confusing=oops |
| ernie=another"''', 'fred=first second third with tab after blank confusing=oops\\0ernie=another\\"\\0') |
| |
| # real-world example |
| check_script('''ubifs_boot= |
| env exists bootubipart || |
| env set bootubipart UBI; |
| env exists bootubivol || |
| env set bootubivol boot; |
| if ubi part ${bootubipart} && |
| ubifsmount ubi${devnum}:${bootubivol}; |
| then |
| devtype=ubi; |
| run scan_dev_for_boot; |
| fi |
| ''', |
| 'ubifs_boot=env exists bootubipart || env set bootubipart UBI; ' |
| 'env exists bootubivol || env set bootubivol boot; ' |
| 'if ubi part ${bootubipart} && ubifsmount ubi${devnum}:${bootubivol}; ' |
| 'then devtype=ubi; run scan_dev_for_boot; fi\\0') |