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Issue #19752: Fix "HAVE_DEV_PTMX" implementation of os.openpty() 

Regression introduced by the implementation of the PEP 446 (non-inheritable
file descriptors by default).

master_fd must be set non-inheritable after the creation of the slave_fd,
otherwise grantpt(master_fd) fails with EPERM (errno 13).
This commit is contained in:
Victor Stinner 2013-11-25 23:19:58 +01:00
parent b4a04fb7e6
commit 000de53624
1 changed files with 5 additions and 1 deletions
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6
Modules/posixmodule.c
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@ -6014,7 +6014,7 @@ posix_openpty(PyObject *self, PyObject *noargs)
goto posix_error;
#else
master_fd = _Py_open(DEV_PTY_FILE, O_RDWR | O_NOCTTY); /* open master */
master_fd = open(DEV_PTY_FILE, O_RDWR | O_NOCTTY); /* open master */
if (master_fd < 0)
goto posix_error;
@ -6041,6 +6041,10 @@ posix_openpty(PyObject *self, PyObject *noargs)
slave_fd = _Py_open(slave_name, O_RDWR | O_NOCTTY); /* open slave */
if (slave_fd < 0)
goto posix_error;
if (_Py_set_inheritable(master_fd, 0, NULL) < 0)
goto posix_error;
#if !defined(__CYGWIN__) && !defined(HAVE_DEV_PTC)
ioctl(slave_fd, I_PUSH, "ptem"); /* push ptem */
ioctl(slave_fd, I_PUSH, "ldterm"); /* push ldterm */