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diff --git a/libbtrfsutil/python/btrfsutilpy.h b/libbtrfsutil/python/btrfsutilpy.h
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+/*
+ * Copyright (C) 2018 Facebook
+ *
+ * This file is part of libbtrfsutil.
+ *
+ * libbtrfsutil is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * libbtrfsutil is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libbtrfsutil. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef BTRFSUTILPY_H
+#define BTRFSUTILPY_H
+
+#define PY_SSIZE_T_CLEAN
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <Python.h>
+#include "structmember.h"
+
+#include <btrfsutil.h>
+
+typedef struct {
+ PyObject_HEAD
+ struct btrfs_util_qgroup_inherit *inherit;
+} QgroupInherit;
+
+extern PyTypeObject BtrfsUtilError_type;
+extern PyStructSequence_Desc SubvolumeInfo_desc;
+extern PyTypeObject SubvolumeInfo_type;
+extern PyTypeObject SubvolumeIterator_type;
+extern PyTypeObject QgroupInherit_type;
+
+/*
+ * Helpers for path arguments based on posixmodule.c in CPython.
+ */
+struct path_arg {
+ bool allow_fd;
+ char *path;
+ int fd;
+ Py_ssize_t length;
+ PyObject *object;
+ PyObject *cleanup;
+};
+int path_converter(PyObject *o, void *p);
+void path_cleanup(struct path_arg *path);
+
+PyObject *list_from_uint64_array(const uint64_t *arr, size_t n);
+
+void SetFromBtrfsUtilError(enum btrfs_util_error err);
+void SetFromBtrfsUtilErrorWithPath(enum btrfs_util_error err,
+ struct path_arg *path);
+void SetFromBtrfsUtilErrorWithPaths(enum btrfs_util_error err,
+ struct path_arg *path1,
+ struct path_arg *path2);
+
+PyObject *filesystem_sync(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *start_sync(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *wait_sync(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *is_subvolume(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *subvolume_id(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *subvolume_path(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *subvolume_info(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *get_subvolume_read_only(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *set_subvolume_read_only(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *get_default_subvolume(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *set_default_subvolume(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *create_subvolume(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *create_snapshot(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *delete_subvolume(PyObject *self, PyObject *args, PyObject *kwds);
+PyObject *deleted_subvolumes(PyObject *self, PyObject *args, PyObject *kwds);
+
+void add_module_constants(PyObject *m);
+
+#endif /* BTRFSUTILPY_H */