diff options
Diffstat (limited to 'Lib/test/test_subprocess.py')
| -rw-r--r-- | Lib/test/test_subprocess.py | 73 |
1 files changed, 54 insertions, 19 deletions
diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py index 8a3ac4bae7..8cd2d1e07c 100644 --- a/Lib/test/test_subprocess.py +++ b/Lib/test/test_subprocess.py @@ -1501,16 +1501,28 @@ class POSIXProcessTestCase(BaseTestCase): # Terminating a dead process self._kill_dead_process('terminate') + def _save_fds(self, save_fds): + fds = [] + for fd in save_fds: + inheritable = os.get_inheritable(fd) + saved = os.dup(fd) + fds.append((fd, saved, inheritable)) + return fds + + def _restore_fds(self, fds): + for fd, saved, inheritable in fds: + os.dup2(saved, fd, inheritable=inheritable) + os.close(saved) + def check_close_std_fds(self, fds): # Issue #9905: test that subprocess pipes still work properly with # some standard fds closed stdin = 0 - newfds = [] - for a in fds: - b = os.dup(a) - newfds.append(b) - if a == 0: - stdin = b + saved_fds = self._save_fds(fds) + for fd, saved, inheritable in saved_fds: + if fd == 0: + stdin = saved + break try: for fd in fds: os.close(fd) @@ -1525,10 +1537,7 @@ class POSIXProcessTestCase(BaseTestCase): err = support.strip_python_stderr(err) self.assertEqual((out, err), (b'apple', b'orange')) finally: - for b, a in zip(newfds, fds): - os.dup2(b, a) - for b in newfds: - os.close(b) + self._restore_fds(saved_fds) def test_close_fd_0(self): self.check_close_std_fds([0]) @@ -1568,7 +1577,7 @@ class POSIXProcessTestCase(BaseTestCase): os.lseek(temp_fds[1], 0, 0) # move the standard file descriptors out of the way - saved_fds = [os.dup(fd) for fd in range(3)] + saved_fds = self._save_fds(range(3)) try: # duplicate the file objects over the standard fd's for fd, temp_fd in enumerate(temp_fds): @@ -1584,10 +1593,7 @@ class POSIXProcessTestCase(BaseTestCase): stderr=temp_fds[0]) p.wait() finally: - # restore the original fd's underneath sys.stdin, etc. - for std, saved in enumerate(saved_fds): - os.dup2(saved, std) - os.close(saved) + self._restore_fds(saved_fds) for fd in temp_fds: os.lseek(fd, 0, 0) @@ -1611,7 +1617,7 @@ class POSIXProcessTestCase(BaseTestCase): os.unlink(fname) # save a copy of the standard file descriptors - saved_fds = [os.dup(fd) for fd in range(3)] + saved_fds = self._save_fds(range(3)) try: # duplicate the temp files over the standard fd's 0, 1, 2 for fd, temp_fd in enumerate(temp_fds): @@ -1637,9 +1643,7 @@ class POSIXProcessTestCase(BaseTestCase): out = os.read(stdout_no, 1024) err = support.strip_python_stderr(os.read(stderr_no, 1024)) finally: - for std, saved in enumerate(saved_fds): - os.dup2(saved, std) - os.close(saved) + self._restore_fds(saved_fds) self.assertEqual(out, b"got STDIN") self.assertEqual(err, b"err") @@ -1810,6 +1814,9 @@ class POSIXProcessTestCase(BaseTestCase): self.addCleanup(os.close, fd) open_fds.add(fd) + for fd in open_fds: + os.set_inheritable(fd, True) + p = subprocess.Popen([sys.executable, fd_status], stdout=subprocess.PIPE, close_fds=False) output, ignored = p.communicate() @@ -1854,6 +1861,8 @@ class POSIXProcessTestCase(BaseTestCase): fds = os.pipe() self.addCleanup(os.close, fds[0]) self.addCleanup(os.close, fds[1]) + os.set_inheritable(fds[0], True) + os.set_inheritable(fds[1], True) open_fds.update(fds) for fd in open_fds: @@ -1876,6 +1885,32 @@ class POSIXProcessTestCase(BaseTestCase): close_fds=False, pass_fds=(fd, ))) self.assertIn('overriding close_fds', str(context.warning)) + def test_pass_fds_inheritable(self): + script = support.findfile("inherited.py", subdir="subprocessdata") + + inheritable, non_inheritable = os.pipe() + self.addCleanup(os.close, inheritable) + self.addCleanup(os.close, non_inheritable) + os.set_inheritable(inheritable, True) + os.set_inheritable(non_inheritable, False) + pass_fds = (inheritable, non_inheritable) + args = [sys.executable, script] + args += list(map(str, pass_fds)) + + p = subprocess.Popen(args, + stdout=subprocess.PIPE, close_fds=True, + pass_fds=pass_fds) + output, ignored = p.communicate() + fds = set(map(int, output.split(b','))) + + # the inheritable file descriptor must be inherited, so its inheritable + # flag must be set in the child process after fork() and before exec() + self.assertEqual(fds, set(pass_fds)) + + # inheritable flag must not be changed in the parent process + self.assertEqual(os.get_inheritable(inheritable), True) + self.assertEqual(os.get_inheritable(non_inheritable), False) + def test_stdout_stdin_are_single_inout_fd(self): with io.open(os.devnull, "r+") as inout: p = subprocess.Popen([sys.executable, "-c", "import sys; sys.exit(0)"], |