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gh-77046: os.pipe() sets _O_NOINHERIT flag on fds (#113817)

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On Windows, set _O_NOINHERIT flag on file descriptors
created by os.pipe() and io.WindowsConsoleIO.

Add test_pipe_spawnl() to test_os.

Co-authored-by: Zackery Spytz <zspytz@gmail.com>
This commit is contained in:
Victor Stinner 2024-01-10 23:02:17 +01:00 • committed by GitHub
parent e82b096335
commit 1d75fa43a2
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5 changed files with 68 additions and 6 deletions
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Modules/posixmodule.c
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@ -11578,8 +11578,8 @@ os_pipe_impl(PyObject *module)
Py_BEGIN_ALLOW_THREADS
ok = CreatePipe(&read, &write, &attr, 0);
if (ok) {
fds[0] = _Py_open_osfhandle_noraise(read, _O_RDONLY);
fds[1] = _Py_open_osfhandle_noraise(write, _O_WRONLY);
fds[0] = _Py_open_osfhandle_noraise(read, _O_RDONLY | _O_NOINHERIT);
fds[1] = _Py_open_osfhandle_noraise(write, _O_WRONLY | _O_NOINHERIT);
if (fds[0] == -1 || fds[1] == -1) {
CloseHandle(read);
CloseHandle(write);