mirror of
https://github.com/micropython/micropython.git
synced 2025-09-05 17:30:41 +02:00
50637ff239
This commit defines a new ROMFS filesystem for storing read-only files that can be memory mapped, and a new VfsRom driver. Files opened from this filesystem support the buffer protocol. This allows naturally getting the memory-mapped address of the file using: - memoryview(file) - uctypes.addressof(file) Furthermore, if these files are .mpy files then their content can be referenced in-place when importing. Such imports take up a lot less RAM than importing from a normal filesystem. This is essentially dynamically frozen .mpy files, building on the revamped v6 .mpy file format. Signed-off-by: Damien George <damien@micropython.org>
72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/*
|
|
* 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"
|
|
#include "extmod/vfs_rom.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_ROM
|
|
{ MP_ROM_QSTR(MP_QSTR_VfsRom), MP_ROM_PTR(&mp_type_vfs_rom) },
|
|
#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
|