98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "extmod/vfs_fat.h"
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#include "lib/oofatfs/ff.h"
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#include "lib/oofatfs/diskio.h"
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#include "py/mpstate.h"
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#include "internal_flash.h"
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static mp_vfs_mount_t _mp_vfs;
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static fs_user_mount_t _internal_vfs;
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void filesystem_init(bool create_allowed) {
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// init the vfs object
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fs_user_mount_t *int_vfs = &_internal_vfs;
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int_vfs->flags = 0;
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flash_init_vfs(int_vfs);
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// try to mount the flash
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FRESULT res = f_mount(&int_vfs->fatfs);
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if (res == FR_NO_FILESYSTEM && create_allowed) {
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// no filesystem so create a fresh one
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uint8_t working_buf[_MAX_SS];
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res = f_mkfs(&int_vfs->fatfs, FM_FAT | FM_SFD, 4096, working_buf, sizeof(working_buf));
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// Flush the new file system to make sure its repaired immediately.
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flash_flush();
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if (res != FR_OK) {
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return;
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}
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// set label
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f_setlabel(&int_vfs->fatfs, "CIRCUITPY");
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// create lib folder
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f_mkdir(&int_vfs->fatfs, "/lib");
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flash_flush();
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} else if (res != FR_OK) {
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return;
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}
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mp_vfs_mount_t *mp_vfs = &_mp_vfs;
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mp_vfs->str = "/";
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mp_vfs->len = 1;
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mp_vfs->obj = MP_OBJ_FROM_PTR(int_vfs);
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mp_vfs->next = NULL;
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MP_STATE_VM(vfs_mount_table) = mp_vfs;
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// The current directory is used as the boot up directory.
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// It is set to the internal flash filesystem by default.
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MP_STATE_PORT(vfs_cur) = mp_vfs;
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}
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void filesystem_flush(void) {
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flash_flush();
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}
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void filesystem_writable_by_python(bool writable) {
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fs_user_mount_t *vfs = &_internal_vfs;
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if (writable) {
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vfs->flags |= FSUSER_USB_WRITABLE;
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} else {
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vfs->flags &= ~FSUSER_USB_WRITABLE;
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}
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}
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bool filesystem_present(void) {
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return true;
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}
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