fsusermount.c

/*
 * This file is part of the Micro Python project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 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/mpconfig.h"
#if MICROPY_FSUSERMOUNT
#include <string.h>
#include <errno.h>

#include "py/nlr.h"
#include "py/runtime.h"
#include "py/mperrno.h"
#if MICROPY_FATFS_OO
#include "lib/oofatfs/ff.h"
#else
#include "lib/fatfs/ff.h"
#endif
#include "extmod/fsusermount.h"

fs_user_mount_t *fatfs_mount_mkfs(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args, bool mkfs) {
    static const mp_arg_t allowed_args[] = {
        { MP_QSTR_readonly, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
        { MP_QSTR_mkfs, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
    };

    // parse args
    mp_obj_t device = pos_args[0];
    mp_obj_t mount_point = pos_args[1];
    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
    mp_arg_parse_all(n_args - 2, pos_args + 2, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);

    // get the mount point
    mp_uint_t mnt_len;
    const char *mnt_str = mp_obj_str_get_data(mount_point, &mnt_len);

    if (device == mp_const_none) {
        // umount
        FRESULT res = FR_NO_FILESYSTEM;
        for (size_t i = 0; i < MP_ARRAY_SIZE(MP_STATE_PORT(fs_user_mount)); ++i) {
            fs_user_mount_t *vfs = MP_STATE_PORT(fs_user_mount)[i];
            if (vfs != NULL && !memcmp(mnt_str, vfs->str, mnt_len + 1)) {
                #if MICROPY_FATFS_OO
                res = f_umount(&vfs->fatfs);
                #else
                res = f_mount(NULL, vfs->str, 0);
                #endif
                if (vfs->flags & FSUSER_FREE_OBJ) {
                    m_del_obj(fs_user_mount_t, vfs);