Python os.get_inheritable() Examples

The following are 30 code examples of os.get_inheritable(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module os , or try the search function .
Example #1
Source File: ipc.py    From hupper with MIT License 6 votes vote down vote up 
def set_inheritable(fd, inheritable):
    # On py34+ we can use os.set_inheritable but < py34 we must polyfill
    # with fcntl and SetHandleInformation
    if hasattr(os, 'get_inheritable'):
        if os.get_inheritable(fd) != inheritable:
            os.set_inheritable(fd, inheritable)

    elif WIN:
        h = get_handle(fd)
        flags = winapi.HANDLE_FLAG_INHERIT if inheritable else 0
        winapi.SetHandleInformation(h, winapi.HANDLE_FLAG_INHERIT, flags)

    else:
        flags = fcntl.fcntl(fd, fcntl.F_GETFD)
        if inheritable:
            new_flags = flags & ~fcntl.FD_CLOEXEC
        else:
            new_flags = flags | fcntl.FD_CLOEXEC
        if new_flags != flags:
            fcntl.fcntl(fd, fcntl.F_SETFD, new_flags)
Example #2
Source File: test_posix.py    From ironpython3 with Apache License 2.0 6 votes vote down vote up 
def test_pipe2(self):
        self.assertRaises(TypeError, os.pipe2, 'DEADBEEF')
        self.assertRaises(TypeError, os.pipe2, 0, 0)

        # try calling with flags = 0, like os.pipe()
        r, w = os.pipe2(0)
        os.close(r)
        os.close(w)

        # test flags
        r, w = os.pipe2(os.O_CLOEXEC|os.O_NONBLOCK)
        self.addCleanup(os.close, r)
        self.addCleanup(os.close, w)
        self.assertFalse(os.get_inheritable(r))
        self.assertFalse(os.get_inheritable(w))
        self.assertTrue(fcntl.fcntl(r, fcntl.F_GETFL) & os.O_NONBLOCK)
        self.assertTrue(fcntl.fcntl(w, fcntl.F_GETFL) & os.O_NONBLOCK)
        # try reading from an empty pipe: this should fail, not block
        self.assertRaises(OSError, os.read, r, 1)
        # try a write big enough to fill-up the pipe: this should either
        # fail or perform a partial write, not block
        try:
            os.write(w, b'x' * support.PIPE_MAX_SIZE)
        except OSError:
            pass
Example #3
Source File: test_os.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 6 votes vote down vote up 
def test_dup2(self):
        fd = os.open(__file__, os.O_RDONLY)
        self.addCleanup(os.close, fd)

        # inheritable by default
        fd2 = os.open(__file__, os.O_RDONLY)
        try:
            os.dup2(fd, fd2)
            self.assertEqual(os.get_inheritable(fd2), True)
        finally:
            os.close(fd2)

        # force non-inheritable
        fd3 = os.open(__file__, os.O_RDONLY)
        try:
            os.dup2(fd, fd3, inheritable=False)
            self.assertEqual(os.get_inheritable(fd3), False)
        finally:
            os.close(fd3)
Example #4
Source File: test_os.py    From ironpython3 with Apache License 2.0 6 votes vote down vote up 
def test_dup2(self):
        fd = os.open(__file__, os.O_RDONLY)
        self.addCleanup(os.close, fd)

        # inheritable by default
        fd2 = os.open(__file__, os.O_RDONLY)
        try:
            os.dup2(fd, fd2)
            self.assertEqual(os.get_inheritable(fd2), True)
        finally:
            os.close(fd2)

        # force non-inheritable
        fd3 = os.open(__file__, os.O_RDONLY)
        try:
            os.dup2(fd, fd3, inheritable=False)
            self.assertEqual(os.get_inheritable(fd3), False)
        finally:
            os.close(fd3)
Example #5
Source File: test_posix.py    From Fluid-Designer with GNU General Public License v3.0 6 votes vote down vote up 
def test_pipe2(self):
        self.assertRaises(TypeError, os.pipe2, 'DEADBEEF')
        self.assertRaises(TypeError, os.pipe2, 0, 0)

        # try calling with flags = 0, like os.pipe()
        r, w = os.pipe2(0)
        os.close(r)
        os.close(w)

        # test flags
        r, w = os.pipe2(os.O_CLOEXEC|os.O_NONBLOCK)
        self.addCleanup(os.close, r)
        self.addCleanup(os.close, w)
        self.assertFalse(os.get_inheritable(r))
        self.assertFalse(os.get_inheritable(w))
        self.assertFalse(os.get_blocking(r))
        self.assertFalse(os.get_blocking(w))
        # try reading from an empty pipe: this should fail, not block
        self.assertRaises(OSError, os.read, r, 1)
        # try a write big enough to fill-up the pipe: this should either
        # fail or perform a partial write, not block
        try:
            os.write(w, b'x' * support.PIPE_MAX_SIZE)
        except OSError:
            pass
Example #6
Source File: test_subprocess.py    From Fluid-Designer with GNU General Public License v3.0 6 votes vote down vote up 
def test_pass_fds_inheritable(self):
        script = support.findfile("fd_status.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), "output=%a" % output)

        # 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)
Example #7
Source File: test_subprocess.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 6 votes vote down vote up 
def test_pass_fds_inheritable(self):
        script = support.findfile("fd_status.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), "output=%a" % output)

        # 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)
Example #8
Source File: test_os.py    From Fluid-Designer with GNU General Public License v3.0 6 votes vote down vote up 
def test_dup2(self):
        fd = os.open(__file__, os.O_RDONLY)
        self.addCleanup(os.close, fd)

        # inheritable by default
        fd2 = os.open(__file__, os.O_RDONLY)
        try:
            os.dup2(fd, fd2)
            self.assertEqual(os.get_inheritable(fd2), True)
        finally:
            os.close(fd2)

        # force non-inheritable
        fd3 = os.open(__file__, os.O_RDONLY)
        try:
            os.dup2(fd, fd3, inheritable=False)
            self.assertEqual(os.get_inheritable(fd3), False)
        finally:
            os.close(fd3)
Example #9
Source File: test_subprocess.py    From ironpython3 with Apache License 2.0 6 votes vote down vote up 
def test_pass_fds_inheritable(self):
        script = support.findfile("fd_status.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), "output=%a" % output)

        # 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)
Example #10
Source File: test_posix.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 6 votes vote down vote up 
def test_pipe2(self):
        self.assertRaises(TypeError, os.pipe2, 'DEADBEEF')
        self.assertRaises(TypeError, os.pipe2, 0, 0)

        # try calling with flags = 0, like os.pipe()
        r, w = os.pipe2(0)
        os.close(r)
        os.close(w)

        # test flags
        r, w = os.pipe2(os.O_CLOEXEC|os.O_NONBLOCK)
        self.addCleanup(os.close, r)
        self.addCleanup(os.close, w)
        self.assertFalse(os.get_inheritable(r))
        self.assertFalse(os.get_inheritable(w))
        self.assertFalse(os.get_blocking(r))
        self.assertFalse(os.get_blocking(w))
        # try reading from an empty pipe: this should fail, not block
        self.assertRaises(OSError, os.read, r, 1)
        # try a write big enough to fill-up the pipe: this should either
        # fail or perform a partial write, not block
        try:
            os.write(w, b'x' * support.PIPE_MAX_SIZE)
        except OSError:
            pass
Example #11
Source File: test_kqueue.py    From android_universal with MIT License 5 votes vote down vote up 
def test_fd_non_inheritable(self):
        kqueue = select.kqueue()
        self.addCleanup(kqueue.close)
        self.assertEqual(os.get_inheritable(kqueue.fileno()), False)
Example #12
Source File: _socket3.py    From PokemonGo-DesktopMap with MIT License 5 votes vote down vote up 
def get_inheritable(self):
                return os.get_inheritable(self.fileno())
Example #13
Source File: test_tempfile.py    From android_universal with MIT License 5 votes vote down vote up 
def test_noinherit(self):
        # _mkstemp_inner file handles are not inherited by child processes

        if support.verbose:
            v="v"
        else:
            v="q"

        file = self.do_create()
        self.assertEqual(os.get_inheritable(file.fd), False)
        fd = "%d" % file.fd

        try:
            me = __file__
        except NameError:
            me = sys.argv[0]

        # We have to exec something, so that FD_CLOEXEC will take
        # effect.  The core of this test is therefore in
        # tf_inherit_check.py, which see.
        tester = os.path.join(os.path.dirname(os.path.abspath(me)),
                              "tf_inherit_check.py")

        # On Windows a spawn* /path/ with embedded spaces shouldn't be quoted,
        # but an arg with embedded spaces should be decorated with double
        # quotes on each end
        if sys.platform == 'win32':
            decorated = '"%s"' % sys.executable
            tester = '"%s"' % tester
        else:
            decorated = sys.executable

        retval = os.spawnl(os.P_WAIT, sys.executable, decorated, tester, v, fd)
        self.assertFalse(retval < 0,
                    "child process caught fatal signal %d" % -retval)
        self.assertFalse(retval > 0, "child process reports failure %d"%retval)
Example #14
Source File: test_os.py    From ironpython3 with Apache License 2.0 5 votes vote down vote up 
def test_openpty(self):
        master_fd, slave_fd = os.openpty()
        self.addCleanup(os.close, master_fd)
        self.addCleanup(os.close, slave_fd)
        self.assertEqual(os.get_inheritable(master_fd), False)
        self.assertEqual(os.get_inheritable(slave_fd), False)
Example #15
Source File: test_builtin.py    From android_universal with MIT License 5 votes vote down vote up 
def test_open_non_inheritable(self):
        fileobj = open(__file__)
        with fileobj:
            self.assertFalse(os.get_inheritable(fileobj.fileno()))
Example #16
Source File: socket.py    From android_universal with MIT License 5 votes vote down vote up 
def get_inheritable(self):
            return os.get_inheritable(self.fileno())
Example #17
Source File: socket.py    From android_universal with MIT License 5 votes vote down vote up 
def get_inheritable(self):
            return os.get_handle_inheritable(self.fileno())
Example #18
Source File: _socket3.py    From PokemonGo-DesktopMap with MIT License 5 votes vote down vote up 
def get_inheritable(self):
                return os.get_inheritable(self.fileno())
Example #19
Source File: _socket3.py    From PokemonGo-DesktopMap with MIT License 5 votes vote down vote up 
def get_inheritable(self):
                return os.get_handle_inheritable(self.fileno())
Example #20
Source File: test_os.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def test_dup(self):
        fd1 = os.open(__file__, os.O_RDONLY)
        self.addCleanup(os.close, fd1)

        fd2 = os.dup(fd1)
        self.addCleanup(os.close, fd2)
        self.assertEqual(os.get_inheritable(fd2), False)
Example #21
Source File: test_os.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def test_get_set_inheritable(self):
        fd = os.open(__file__, os.O_RDONLY)
        self.addCleanup(os.close, fd)
        self.assertEqual(os.get_inheritable(fd), False)

        os.set_inheritable(fd, True)
        self.assertEqual(os.get_inheritable(fd), True)
Example #22
Source File: test_os.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def test_inheritable(self):
        self.check(os.get_inheritable)
        self.check(os.set_inheritable, True)
Example #23
Source File: test_tempfile.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def test_noinherit(self):
        # _mkstemp_inner file handles are not inherited by child processes

        if support.verbose:
            v="v"
        else:
            v="q"

        file = self.do_create()
        self.assertEqual(os.get_inheritable(file.fd), False)
        fd = "%d" % file.fd

        try:
            me = __file__
        except NameError:
            me = sys.argv[0]

        # We have to exec something, so that FD_CLOEXEC will take
        # effect.  The core of this test is therefore in
        # tf_inherit_check.py, which see.
        tester = os.path.join(os.path.dirname(os.path.abspath(me)),
                              "tf_inherit_check.py")

        # On Windows a spawn* /path/ with embedded spaces shouldn't be quoted,
        # but an arg with embedded spaces should be decorated with double
        # quotes on each end
        if sys.platform == 'win32':
            decorated = '"%s"' % sys.executable
            tester = '"%s"' % tester
        else:
            decorated = sys.executable

        retval = os.spawnl(os.P_WAIT, sys.executable, decorated, tester, v, fd)
        self.assertFalse(retval < 0,
                    "child process caught fatal signal %d" % -retval)
        self.assertFalse(retval > 0, "child process reports failure %d"%retval)
Example #24
Source File: test_kqueue.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def test_fd_non_inheritable(self):
        kqueue = select.kqueue()
        self.addCleanup(kqueue.close)
        self.assertEqual(os.get_inheritable(kqueue.fileno()), False)
Example #25
Source File: test_builtin.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def test_open_non_inheritable(self):
        fileobj = open(__file__)
        with fileobj:
            self.assertFalse(os.get_inheritable(fileobj.fileno()))
Example #26
Source File: socket.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def get_inheritable(self):
            return os.get_inheritable(self.fileno())
Example #27
Source File: socket.py    From Project-New-Reign---Nemesis-Main with GNU General Public License v3.0 5 votes vote down vote up 
def get_inheritable(self):
            return os.get_handle_inheritable(self.fileno())
Example #28
Source File: _socket3.py    From PhonePi_SampleServer with MIT License 5 votes vote down vote up 
def get_inheritable(self):
                return os.get_inheritable(self.fileno())
Example #29
Source File: _socket3.py    From PhonePi_SampleServer with MIT License 5 votes vote down vote up 
def get_inheritable(self):
                return os.get_handle_inheritable(self.fileno())
Example #30
Source File: socket.py    From PySocket with Apache License 2.0 5 votes vote down vote up 
def get_inheritable(self):
            return os.get_inheritable(self.fileno())