Issue #7333: The `posix` module gains an `initgroups()` function providing
access to the initgroups(3) C library call on Unix systems which implement
it. Patch by Jean-Paul Calderone.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 68e7286..8956e93 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -3861,6 +3861,30 @@
}
#endif
+#ifdef HAVE_INITGROUPS
+PyDoc_STRVAR(posix_initgroups__doc__,
+"initgroups(username, gid) -> None\n\n\
+Call the system initgroups() to initialize the group access list with all of\n\
+the groups of which the specified username is a member, plus the specified\n\
+group id.");
+
+static PyObject *
+posix_initgroups(PyObject *self, PyObject *args)
+{
+ char *username;
+ long gid;
+
+ if (!PyArg_ParseTuple(args, "sl:initgroups", &username, &gid))
+ return NULL;
+
+ if (initgroups(username, (gid_t) gid) == -1)
+ return PyErr_SetFromErrno(PyExc_OSError);
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+#endif
+
#ifdef HAVE_GETPGID
PyDoc_STRVAR(posix_getpgid__doc__,
"getpgid(pid) -> pgid\n\n\
@@ -8629,6 +8653,9 @@
#ifdef HAVE_SETGROUPS
{"setgroups", posix_setgroups, METH_O, posix_setgroups__doc__},
#endif /* HAVE_SETGROUPS */
+#ifdef HAVE_INITGROUPS
+ {"initgroups", posix_initgroups, METH_VARARGS, posix_initgroups__doc__},
+#endif /* HAVE_INITGROUPS */
#ifdef HAVE_GETPGID
{"getpgid", posix_getpgid, METH_VARARGS, posix_getpgid__doc__},
#endif /* HAVE_GETPGID */