Issue #18571: Implementation of the PEP 446: file descriptors and file handles

are now created non-inheritable; add functions os.get/set_inheritable(),
os.get/set_handle_inheritable() and socket.socket.get/set_inheritable().

2 files changed, 3 insertions, 3 deletions

diff --git a/PC/_msi.c b/PC/_msi.c
index 6aba8b0dea..eb69014073 100644
--- a/PC/_msi.c
+++ b/PC/_msi.c
@@ -55,7 +55,7 @@ static FNFCIFREE(cb_free)
 
 static FNFCIOPEN(cb_open)
 {
-    int result = _open(pszFile, oflag, pmode);
+    int result = _open(pszFile, oflag | O_NOINHERIT, pmode);
     if (result == -1)
         *err = errno;
     return result;
@@ -179,7 +179,7 @@ static FNFCIGETOPENINFO(cb_getopeninfo)
 
     CloseHandle(handle);
 
-    return _open(pszName, _O_RDONLY | _O_BINARY);
+    return _open(pszName, _O_RDONLY | _O_BINARY | O_NOINHERIT);
 }
 
 static PyObject* fcicreate(PyObject* obj, PyObject* args)
diff --git a/PC/bdist_wininst/install.c b/PC/bdist_wininst/install.c
index c11d45de22..e9401d9f3f 100644
--- a/PC/bdist_wininst/install.c
+++ b/PC/bdist_wininst/install.c
@@ -743,7 +743,7 @@ do_run_installscript(HINSTANCE hPython, char *pathname, int argc, char **argv)
     if (pathname == NULL || pathname[0] == '\0')
         return 2;
 
-    fh = open(pathname, _O_RDONLY);
+    fh = open(pathname, _O_RDONLY | O_NOINHERIT);
     if (-1 == fh) {
         fprintf(stderr, "Could not open postinstall-script %s\n",
             pathname);