web_api_mock = <requests_mock.mocker.Mocker object at 0x7f57ecb61e80> @pytest.fixture def fuse_mntdir(web_api_mock): tmpdir = TemporaryDirectory(suffix=".swh-fuse-test") # Run FUSE in foreground mode but in a separate process, so it does not # block execution and remains easy to kill during teardown def fuse_process(tmpdir): with tmpdir as mntdir: CliRunner().invoke( cli.mount, args=[ mntdir, ROOT_SWHID, "--foreground", "--cache-dir", ":memory:", "--api-url", API_URL, ], ) fuse = Process(target=fuse_process, args=[tmpdir]) fuse.start() # Wait max 3 seconds for the FUSE to correctly mount i = 0 while i < 30: try: root = listdir(tmpdir.name) if root: break except FileNotFoundError: i += 1 time.sleep(0.1) yield tmpdir.name > subprocess.run(["fusermount", "-u", tmpdir.name], check=True) .tox/py3/lib/python3.7/site-packages/swh/fuse/tests/conftest.py:63: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ /usr/lib/python3.7/subprocess.py:472: in run with Popen(*popenargs, **kwargs) as process: /usr/lib/python3.7/subprocess.py:775: in __init__ restore_signals, start_new_session) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ self = <subprocess.Popen object at 0x7f57ecb65f60> args = ['fusermount', '-u', '/tmp/tmphq9nyosw.swh-fuse-test'] executable = b'fusermount', preexec_fn = None, close_fds = True, pass_fds = () cwd = None, env = None, startupinfo = None, creationflags = 0, shell = False p2cread = -1, p2cwrite = -1, c2pread = -1, c2pwrite = -1, errread = -1 errwrite = -1, restore_signals = True, start_new_session = False def _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, restore_signals, start_new_session): """Execute program (POSIX version)""" if isinstance(args, (str, bytes)): args = [args] else: args = list(args) if shell: # On Android the default shell is at '/system/bin/sh'. unix_shell = ('/system/bin/sh' if hasattr(sys, 'getandroidapilevel') else '/bin/sh') args = [unix_shell, "-c"] + args if executable: args[0] = executable if executable is None: executable = args[0] orig_executable = executable # For transferring possible exec failure from child to parent. # Data format: "exception name:hex errno:description" # Pickle is not used; it is complex and involves memory allocation. errpipe_read, errpipe_write = os.pipe() # errpipe_write must not be in the standard io 0, 1, or 2 fd range. low_fds_to_close = [] while errpipe_write < 3: low_fds_to_close.append(errpipe_write) errpipe_write = os.dup(errpipe_write) for low_fd in low_fds_to_close: os.close(low_fd) try: try: # We must avoid complex work that could involve # malloc or free in the child process to avoid # potential deadlocks, thus we do all this here. # and pass it to fork_exec() if env is not None: env_list = [] for k, v in env.items(): k = os.fsencode(k) if b'=' in k: raise ValueError("illegal environment variable name") env_list.append(k + b'=' + os.fsencode(v)) else: env_list = None # Use execv instead of execve. executable = os.fsencode(executable) if os.path.dirname(executable): executable_list = (executable,) else: # This matches the behavior of os._execvpe(). executable_list = tuple( os.path.join(os.fsencode(dir), executable) for dir in os.get_exec_path(env)) fds_to_keep = set(pass_fds) fds_to_keep.add(errpipe_write) self.pid = _posixsubprocess.fork_exec( args, executable_list, close_fds, tuple(sorted(map(int, fds_to_keep))), cwd, env_list, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, errpipe_read, errpipe_write, restore_signals, start_new_session, preexec_fn) self._child_created = True finally: # be sure the FD is closed no matter what os.close(errpipe_write) # self._devnull is not always defined. devnull_fd = getattr(self, '_devnull', None) if p2cread != -1 and p2cwrite != -1 and p2cread != devnull_fd: os.close(p2cread) if c2pwrite != -1 and c2pread != -1 and c2pwrite != devnull_fd: os.close(c2pwrite) if errwrite != -1 and errread != -1 and errwrite != devnull_fd: os.close(errwrite) if devnull_fd is not None: os.close(devnull_fd) # Prevent a double close of these fds from __init__ on error. self._closed_child_pipe_fds = True # Wait for exec to fail or succeed; possibly raising an # exception (limited in size) errpipe_data = bytearray() while True: part = os.read(errpipe_read, 50000) errpipe_data += part if not part or len(errpipe_data) > 50000: break finally: # be sure the FD is closed no matter what os.close(errpipe_read) if errpipe_data: try: pid, sts = os.waitpid(self.pid, 0) if pid == self.pid: self._handle_exitstatus(sts) else: self.returncode = sys.maxsize except ChildProcessError: pass try: exception_name, hex_errno, err_msg = ( errpipe_data.split(b':', 2)) # The encoding here should match the encoding # written in by the subprocess implementations # like _posixsubprocess err_msg = err_msg.decode() except ValueError: exception_name = b'SubprocessError' hex_errno = b'0' err_msg = 'Bad exception data from child: {!r}'.format( bytes(errpipe_data)) child_exception_type = getattr( builtins, exception_name.decode('ascii'), SubprocessError) if issubclass(child_exception_type, OSError) and hex_errno: errno_num = int(hex_errno, 16) child_exec_never_called = (err_msg == "noexec") if child_exec_never_called: err_msg = "" # The error must be from chdir(cwd). err_filename = cwd else: err_filename = orig_executable if errno_num != 0: err_msg = os.strerror(errno_num) if errno_num == errno.ENOENT: err_msg += ': ' + repr(err_filename) > raise child_exception_type(errno_num, err_msg, err_filename) E FileNotFoundError: [Errno 2] No such file or directory: 'fusermount': 'fusermount' /usr/lib/python3.7/subprocess.py:1522: FileNotFoundError