Issue #10755: Add the posix.fdlistdir() function. Patch by Ross Lagerwall.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 1281af7..077343e 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -2678,6 +2678,76 @@
#endif /* which OS */
} /* end of posix_listdir */
+#ifdef HAVE_FDOPENDIR
+PyDoc_STRVAR(posix_fdlistdir__doc__,
+"fdlistdir(fd) -> list_of_strings\n\n\
+Like listdir(), but uses a file descriptor instead.\n\
+After succesful execution of this function, fd will be closed.");
+
+static PyObject *
+posix_fdlistdir(PyObject *self, PyObject *args)
+{
+ PyObject *d, *v;
+ DIR *dirp;
+ struct dirent *ep;
+ int fd;
+
+ errno = 0;
+ if (!PyArg_ParseTuple(args, "i:fdlistdir", &fd))
+ return NULL;
+ Py_BEGIN_ALLOW_THREADS
+ dirp = fdopendir(fd);
+ Py_END_ALLOW_THREADS
+ if (dirp == NULL) {
+ close(fd);
+ return posix_error();
+ }
+ if ((d = PyList_New(0)) == NULL) {
+ Py_BEGIN_ALLOW_THREADS
+ closedir(dirp);
+ Py_END_ALLOW_THREADS
+ return NULL;
+ }
+ for (;;) {
+ errno = 0;
+ Py_BEGIN_ALLOW_THREADS
+ ep = readdir(dirp);
+ Py_END_ALLOW_THREADS
+ if (ep == NULL) {
+ if (errno == 0) {
+ break;
+ } else {
+ Py_BEGIN_ALLOW_THREADS
+ closedir(dirp);
+ Py_END_ALLOW_THREADS
+ Py_DECREF(d);
+ return posix_error();
+ }
+ }
+ if (ep->d_name[0] == '.' &&
+ (NAMLEN(ep) == 1 ||
+ (ep->d_name[1] == '.' && NAMLEN(ep) == 2)))
+ continue;
+ v = PyUnicode_DecodeFSDefaultAndSize(ep->d_name, NAMLEN(ep));
+ if (v == NULL) {
+ Py_CLEAR(d);
+ break;
+ }
+ if (PyList_Append(d, v) != 0) {
+ Py_DECREF(v);
+ Py_CLEAR(d);
+ break;
+ }
+ Py_DECREF(v);
+ }
+ Py_BEGIN_ALLOW_THREADS
+ closedir(dirp);
+ Py_END_ALLOW_THREADS
+
+ return d;
+}
+#endif
+
#ifdef MS_WINDOWS
/* A helper function for abspath on win32 */
static PyObject *
@@ -8599,6 +8669,9 @@
{"link", posix_link, METH_VARARGS, posix_link__doc__},
#endif /* HAVE_LINK */
{"listdir", posix_listdir, METH_VARARGS, posix_listdir__doc__},
+#ifdef HAVE_FDOPENDIR
+ {"fdlistdir", posix_fdlistdir, METH_VARARGS, posix_fdlistdir__doc__},
+#endif
{"lstat", posix_lstat, METH_VARARGS, posix_lstat__doc__},
{"mkdir", posix_mkdir, METH_VARARGS, posix_mkdir__doc__},
#ifdef HAVE_NICE