bpo-35674: Add os.posix_spawnp() (GH-11554)

Add a new os.posix_spawnp() function.

Modules/posixmodule.c

@@ -5381,39 +5381,12 @@ fail:
     return -1;
 }
 
-/*[clinic input]
-
-os.posix_spawn
-    path: path_t
-        Path of executable file.
-    argv: object
-        Tuple or list of strings.
-    env: object
-        Dictionary of strings mapping to strings.
-    /
-    *
-    file_actions: object(c_default='NULL') = ()
-        A sequence of file action tuples.
-    setpgroup: object = NULL
-        The pgroup to use with the POSIX_SPAWN_SETPGROUP flag.
-    resetids: bool(accept={int}) = False
-        If the value is `True` the POSIX_SPAWN_RESETIDS will be activated.
-    setsigmask: object(c_default='NULL') = ()
-        The sigmask to use with the POSIX_SPAWN_SETSIGMASK flag.
-    setsigdef: object(c_default='NULL') = ()
-        The sigmask to use with the POSIX_SPAWN_SETSIGDEF flag.
-    scheduler: object = NULL
-        A tuple with the scheduler policy (optional) and parameters.
-
-Execute the program specified by path in a new process.
-[clinic start generated code]*/
 
 static PyObject *
-os_posix_spawn_impl(PyObject *module, path_t *path, PyObject *argv,
-                    PyObject *env, PyObject *file_actions,
-                    PyObject *setpgroup, int resetids, PyObject *setsigmask,
-                    PyObject *setsigdef, PyObject *scheduler)
-/*[clinic end generated code: output=45dfa4c515d09f2c input=2891c2f1d457e39b]*/
+py_posix_spawn(int use_posix_spawnp, PyObject *module, path_t *path, PyObject *argv,
+               PyObject *env, PyObject *file_actions,
+               PyObject *setpgroup, int resetids, PyObject *setsigmask,
+               PyObject *setsigdef, PyObject *scheduler)
 {
     EXECV_CHAR **argvlist = NULL;
     EXECV_CHAR **envlist = NULL;
@@ -5489,9 +5462,19 @@ os_posix_spawn_impl(PyObject *module, path_t *path, PyObject *argv,
     attrp = &attr;
 
     _Py_BEGIN_SUPPRESS_IPH
-    err_code = posix_spawn(&pid, path->narrow,
-                           file_actionsp, attrp, argvlist, envlist);
+#ifdef HAVE_POSIX_SPAWNP
+    if (use_posix_spawnp) {
+        err_code = posix_spawnp(&pid, path->narrow,
+                                file_actionsp, attrp, argvlist, envlist);
+    }
+    else
+#endif /* HAVE_POSIX_SPAWNP */
+    {
+        err_code = posix_spawn(&pid, path->narrow,
+                               file_actionsp, attrp, argvlist, envlist);
+    }
     _Py_END_SUPPRESS_IPH
+
     if (err_code) {
         errno = err_code;
         PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError, path->object);
@@ -5518,7 +5501,90 @@ exit:
     Py_XDECREF(temp_buffer);
     return result;
 }
-#endif /* HAVE_POSIX_SPAWN */
+
+
+/*[clinic input]
+
+os.posix_spawn
+    path: path_t
+        Path of executable file.
+    argv: object
+        Tuple or list of strings.
+    env: object
+        Dictionary of strings mapping to strings.
+    /
+    *
+    file_actions: object(c_default='NULL') = ()
+        A sequence of file action tuples.
+    setpgroup: object = NULL
+        The pgroup to use with the POSIX_SPAWN_SETPGROUP flag.
+    resetids: bool(accept={int}) = False
+        If the value is `True` the POSIX_SPAWN_RESETIDS will be activated.
+    setsigmask: object(c_default='NULL') = ()
+        The sigmask to use with the POSIX_SPAWN_SETSIGMASK flag.
+    setsigdef: object(c_default='NULL') = ()
+        The sigmask to use with the POSIX_SPAWN_SETSIGDEF flag.
+    scheduler: object = NULL
+        A tuple with the scheduler policy (optional) and parameters.
+
+Execute the program specified by path in a new process.
+[clinic start generated code]*/
+
+static PyObject *
+os_posix_spawn_impl(PyObject *module, path_t *path, PyObject *argv,
+                    PyObject *env, PyObject *file_actions,
+                    PyObject *setpgroup, int resetids, PyObject *setsigmask,
+                    PyObject *setsigdef, PyObject *scheduler)
+/*[clinic end generated code: output=45dfa4c515d09f2c input=2891c2f1d457e39b]*/
+{
+    return py_posix_spawn(0, module, path, argv, env, file_actions,
+                          setpgroup, resetids, setsigmask, setsigdef,
+                          scheduler);
+}
+ #endif /* HAVE_POSIX_SPAWN */
+
+
+
+#ifdef HAVE_POSIX_SPAWNP
+/*[clinic input]
+
+os.posix_spawnp
+    path: path_t
+        Path of executable file.
+    argv: object
+        Tuple or list of strings.
+    env: object
+        Dictionary of strings mapping to strings.
+    /
+    *
+    file_actions: object(c_default='NULL') = ()
+        A sequence of file action tuples.
+    setpgroup: object = NULL
+        The pgroup to use with the POSIX_SPAWN_SETPGROUP flag.
+    resetids: bool(accept={int}) = False
+        If the value is `True` the POSIX_SPAWN_RESETIDS will be activated.
+    setsigmask: object(c_default='NULL') = ()
+        The sigmask to use with the POSIX_SPAWN_SETSIGMASK flag.
+    setsigdef: object(c_default='NULL') = ()
+        The sigmask to use with the POSIX_SPAWN_SETSIGDEF flag.
+    scheduler: object = NULL
+        A tuple with the scheduler policy (optional) and parameters.
+
+Execute the program specified by path in a new process.
+[clinic start generated code]*/
+
+static PyObject *
+os_posix_spawnp_impl(PyObject *module, path_t *path, PyObject *argv,
+                     PyObject *env, PyObject *file_actions,
+                     PyObject *setpgroup, int resetids, PyObject *setsigmask,
+                     PyObject *setsigdef, PyObject *scheduler)
+/*[clinic end generated code: output=7955dc0edc82b8c3 input=b7576eb25b1ed9eb]*/
+{
+    return py_posix_spawn(1, module, path, argv, env, file_actions,
+                          setpgroup, resetids, setsigmask, setsigdef,
+                          scheduler);
+}
+#endif /* HAVE_POSIX_SPAWNP */
 
 
 #if defined(HAVE_SPAWNV) || defined(HAVE_WSPAWNV)
@@ -13084,6 +13150,7 @@ static PyMethodDef posix_methods[] = {
     OS_GETPRIORITY_METHODDEF
     OS_SETPRIORITY_METHODDEF
     OS_POSIX_SPAWN_METHODDEF
+    OS_POSIX_SPAWNP_METHODDEF
     OS_READLINK_METHODDEF
     OS_RENAME_METHODDEF
     OS_REPLACE_METHODDEF