extmod/modvfs: Add new "vfs" module with mount/umount and Vfs classes.

They have been moved from the "os" module.

Signed-off-by: Damien George <damien@micropython.org>

extmod/modvfs.c

@@ -0,0 +1,67 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2023 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "py/runtime.h"
+
+#if MICROPY_PY_VFS
+
+#include "extmod/vfs.h"
+#include "extmod/vfs_fat.h"
+#include "extmod/vfs_lfs.h"
+#include "extmod/vfs_posix.h"
+
+#if !MICROPY_VFS
+#error "MICROPY_PY_VFS requires MICROPY_VFS"
+#endif
+
+STATIC const mp_rom_map_elem_t vfs_module_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_vfs) },
+
+    { MP_ROM_QSTR(MP_QSTR_mount), MP_ROM_PTR(&mp_vfs_mount_obj) },
+    { MP_ROM_QSTR(MP_QSTR_umount), MP_ROM_PTR(&mp_vfs_umount_obj) },
+    #if MICROPY_VFS_FAT
+    { MP_ROM_QSTR(MP_QSTR_VfsFat), MP_ROM_PTR(&mp_fat_vfs_type) },
+    #endif
+    #if MICROPY_VFS_LFS1
+    { MP_ROM_QSTR(MP_QSTR_VfsLfs1), MP_ROM_PTR(&mp_type_vfs_lfs1) },
+    #endif
+    #if MICROPY_VFS_LFS2
+    { MP_ROM_QSTR(MP_QSTR_VfsLfs2), MP_ROM_PTR(&mp_type_vfs_lfs2) },
+    #endif
+    #if MICROPY_VFS_POSIX
+    { MP_ROM_QSTR(MP_QSTR_VfsPosix), MP_ROM_PTR(&mp_type_vfs_posix) },
+    #endif
+};
+STATIC MP_DEFINE_CONST_DICT(vfs_module_globals, vfs_module_globals_table);
+
+const mp_obj_module_t mp_module_vfs = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t *)&vfs_module_globals,
+};
+
+MP_REGISTER_MODULE(MP_QSTR_vfs, mp_module_vfs);
+
+#endif // MICROPY_PY_VFS