text: /*
   * This file is part of the MicroPython project, http://micropython.org/
   *
   * The MIT License (MIT)
   *
   * Copyright (c) 2019-2020 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 <stdio.h>
  #include <string.h>
  
  #include "py/runtime.h"
  #include "py/stream.h"
  #include "py/binary.h"
  #include "py/objarray.h"
  #include "py/objstr.h"
  #include "py/mperrno.h"
  #include "extmod/vfs.h"
  #include "lib/timeutils/timeutils.h"
  
  STATIC int MP_VFS_LFSx(dev_ioctl)(const struct LFSx_API (config) * c, int cmd, int arg, bool must_return_int) {
      mp_obj_t ret = mp_vfs_blockdev_ioctl(c->context, cmd, arg);
      int ret_i = 0;
      if (must_return_int || ret != mp_const_none) {
          ret_i = mp_obj_get_int(ret);
      }
      return ret_i;
  }
  
  STATIC int MP_VFS_LFSx(dev_read)(const struct LFSx_API (config) * c, LFSx_API(block_t) block, LFSx_API(off_t) off, void *buffer, LFSx_API(size_t) size) {
      return mp_vfs_blockdev_read_ext(c->context, block, off, size, buffer);
  }
  
  STATIC int MP_VFS_LFSx(dev_prog)(const struct LFSx_API (config) * c, LFSx_API(block_t) block, LFSx_API(off_t) off, const void *buffer, LFSx_API(size_t) size) {
      return mp_vfs_blockdev_write_ext(c->context, block, off, size, buffer);
  }
  
  STATIC int MP_VFS_LFSx(dev_erase)(const struct LFSx_API (config) * c, LFSx_API(block_t) block) {
      return MP_VFS_LFSx(dev_ioctl)(c, MP_BLOCKDEV_IOCTL_BLOCK_ERASE, block, true);
  }
  
  STATIC int MP_VFS_LFSx(dev_sync)(const struct LFSx_API (config) * c) {
      return MP_VFS_LFSx(dev_ioctl)(c, MP_BLOCKDEV_IOCTL_SYNC, 0, false);
  }
  
  STATIC void MP_VFS_LFSx(init_config)(MP_OBJ_VFS_LFSx * self, mp_obj_t bdev, size_t read_size, size_t prog_size, size_t lookahead) {
      self->blockdev.flags = MP_BLOCKDEV_FLAG_FREE_OBJ;
      mp_vfs_blockdev_init(&self->blockdev, bdev);
  
      struct LFSx_API (config) * config = &self->config;
      memset(config, 0, sizeof(*config));
  
      config->context = &self->blockdev;
  
      config->read = MP_VFS_LFSx(dev_read);
      config->prog = MP_VFS_LFSx(dev_prog);
      config->erase = MP_VFS_LFSx(dev_erase);
      config->sync = MP_VFS_LFSx(dev_sync);
  
      MP_VFS_LFSx(dev_ioctl)(config, MP_BLOCKDEV_IOCTL_INIT, 1, false); // initialise block device
      int bs = MP_VFS_LFSx(dev_ioctl)(config, MP_BLOCKDEV_IOCTL_BLOCK_SIZE, 0, true); // get block size
      int bc = MP_VFS_LFSx(dev_ioctl)(config, MP_BLOCKDEV_IOCTL_BLOCK_COUNT, 0, true); // get block count
      self->blockdev.block_size = bs;
  
      config->read_size = read_size;
      config->prog_size = prog_size;
      config->block_size = bs;
      config->block_count = bc;
  
      #if LFS_BUILD_VERSION == 1
      config->lookahead = lookahead;
      config->read_buffer = m_new(uint8_t, config->read_size);
      config->prog_buffer = m_new(uint8_t, config->prog_size);
      config->lookahead_buffer = m_new(uint8_t, config->lookahead / 8);
      #else
      config->block_cycles = 100;
      config->cache_size = 4 * MAX(read_size, prog_size);
      config->lookahead_size = lookahead;
      config->read_buffer = m_new(uint8_t, config->cache_size);
      config->prog_buffer = m_new(uint8_t, config->cache_size);
      config->lookahead_buffer = m_new(uint8_t, config->lookahead_size);
      #endif
  }
  
  const char *MP_VFS_LFSx(make_path)(MP_OBJ_VFS_LFSx * self, mp_obj_t path_in) {
      const char *path = mp_obj_str_get_str(path_in);
      if (path[0] != '/') {
          size_t l = vstr_len(&self->cur_dir);
          if (l > 0) {
              vstr_add_str(&self->cur_dir, path);
              path = vstr_null_terminated_str(&self->cur_dir);
              self->cur_dir.len = l;
          }
      }
      return path;
  }
  
  STATIC mp_obj_t MP_VFS_LFSx(make_new)(const mp_obj_type_t * type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
      mp_arg_val_t args[MP_ARRAY_SIZE(lfs_make_allowed_args)];
      mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(lfs_make_allowed_args), lfs_make_allowed_args, args);
  
      MP_OBJ_VFS_LFSx *self = m_new0(MP_OBJ_VFS_LFSx, 1);
      self->base.type = type;
      vstr_init(&self->cur_dir, 16);
      vstr_add_byte(&self->cur_dir, '/');
      #if LFS_BUILD_VERSION == 2
      self->enable_mtime = args[LFS_MAKE_ARG_mtime].u_bool;
      #endif
      MP_VFS_LFSx(init_config)(self, args[LFS_MAKE_ARG_bdev].u_obj,
          args[LFS_MAKE_ARG_readsize].u_int, args[LFS_MAKE_ARG_progsize].u_int, args[LFS_MAKE_ARG_lookahead].u_int);
      int ret = LFSx_API(mount)(&self->lfs, &self->config);
      if (ret < 0) {
          mp_raise_OSError(-ret);
      }
      return MP_OBJ_FROM_PTR(self);
  }
  
  STATIC mp_obj_t MP_VFS_LFSx(mkfs)(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
      mp_arg_val_t args[MP_ARRAY_SIZE(lfs_make_allowed_args)];
      mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(lfs_make_allowed_args), lfs_make_allowed_args, args);
  
      MP_OBJ_VFS_LFSx self;
      MP_VFS_LFSx(init_config)(&self, args[LFS_MAKE_ARG_bdev].u_obj,
          args[LFS_MAKE_ARG_readsize].u_int, args[LFS_MAKE_ARG_progsize].u_int, args[LFS_MAKE_ARG_lookahead].u_int);
      int ret = LFSx_API(format)(&self.lfs, &self.config);
      if (ret < 0) {
          mp_raise_OSError(-ret);
      }
      return mp_const_none;
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_KW(MP_VFS_LFSx(mkfs_fun_obj), 0, MP_VFS_LFSx(mkfs));
  STATIC MP_DEFINE_CONST_STATICMETHOD_OBJ(MP_VFS_LFSx(mkfs_obj), MP_ROM_PTR(&MP_VFS_LFSx(mkfs_fun_obj)));
  
  // Implementation of mp_vfs_lfs_file_open is provided in vfs_lfsx_file.c
  STATIC MP_DEFINE_CONST_FUN_OBJ_3(MP_VFS_LFSx(open_obj), MP_VFS_LFSx(file_open));
  
  typedef struct MP_VFS_LFSx (_ilistdir_it_t) {
      mp_obj_base_t base;
      mp_fun_1_t iternext;
      bool is_str;
      MP_OBJ_VFS_LFSx *vfs;
      LFSx_API(dir_t) dir;
  } MP_VFS_LFSx(ilistdir_it_t);
  
  STATIC mp_obj_t MP_VFS_LFSx(ilistdir_it_iternext)(mp_obj_t self_in) {
      MP_VFS_LFSx(ilistdir_it_t) * self = MP_OBJ_TO_PTR(self_in);
  
      struct LFSx_API (info) info;
      for (;;) {
          int ret = LFSx_API(dir_read)(&self->vfs->lfs, &self->dir, &info);
          if (ret == 0) {
              LFSx_API(dir_close)(&self->vfs->lfs, &self->dir);
              return MP_OBJ_STOP_ITERATION;
          }
          if (!(info.name[0] == '.' && (info.name[1] == '\0'
                                        || (info.name[1] == '.' && info.name[2] == '\0')))) {
              break;
          }
      }
  
      // make 4-tuple with info about this entry
      mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(4, NULL));
      if (self->is_str) {
          t->items[0] = mp_obj_new_str(info.name, strlen(info.name));
      } else {
          t->items[0] = mp_obj_new_bytes((const byte *)info.name, strlen(info.name));
      }
      t->items[1] = MP_OBJ_NEW_SMALL_INT(info.type == LFSx_MACRO(_TYPE_REG) ? MP_S_IFREG : MP_S_IFDIR);
      t->items[2] = MP_OBJ_NEW_SMALL_INT(0); // no inode number
      t->items[3] = MP_OBJ_NEW_SMALL_INT(info.size);
  
      return MP_OBJ_FROM_PTR(t);
  }
  
  STATIC mp_obj_t MP_VFS_LFSx(ilistdir_func)(size_t n_args, const mp_obj_t *args) {
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(args[0]);
      bool is_str_type = true;
      const char *path;
      if (n_args == 2) {
          if (mp_obj_get_type(args[1]) == &mp_type_bytes) {
              is_str_type = false;
          }
          path = MP_VFS_LFSx(make_path)(self, args[1]);
      } else {
          path = vstr_null_terminated_str(&self->cur_dir);
      }
  
      MP_VFS_LFSx(ilistdir_it_t) * iter = m_new_obj(MP_VFS_LFSx(ilistdir_it_t));
      iter->base.type = &mp_type_polymorph_iter;
      iter->iternext = MP_VFS_LFSx(ilistdir_it_iternext);
      iter->is_str = is_str_type;
      iter->vfs = self;
      int ret = LFSx_API(dir_open)(&self->lfs, &iter->dir, path);
      if (ret < 0) {
          mp_raise_OSError(-ret);
      }
      return MP_OBJ_FROM_PTR(iter);
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(MP_VFS_LFSx(ilistdir_obj), 1, 2, MP_VFS_LFSx(ilistdir_func));
  
  STATIC mp_obj_t MP_VFS_LFSx(remove)(mp_obj_t self_in, mp_obj_t path_in) {
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
      const char *path = MP_VFS_LFSx(make_path)(self, path_in);
      int ret = LFSx_API(remove)(&self->lfs, path);
      if (ret < 0) {
          mp_raise_OSError(-ret);
      }
      return mp_const_none;
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(remove_obj), MP_VFS_LFSx(remove));
  
  STATIC mp_obj_t MP_VFS_LFSx(rmdir)(mp_obj_t self_in, mp_obj_t path_in) {
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
      const char *path = MP_VFS_LFSx(make_path)(self, path_in);
      int ret = LFSx_API(remove)(&self->lfs, path);
      if (ret < 0) {
          mp_raise_OSError(-ret);
      }
      return mp_const_none;
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(rmdir_obj), MP_VFS_LFSx(rmdir));
  
  STATIC mp_obj_t MP_VFS_LFSx(rename)(mp_obj_t self_in, mp_obj_t path_old_in, mp_obj_t path_new_in) {
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
      const char *path_old = MP_VFS_LFSx(make_path)(self, path_old_in);
      const char *path = mp_obj_str_get_str(path_new_in);
      vstr_t path_new;
      vstr_init(&path_new, vstr_len(&self->cur_dir));
      if (path[0] != '/') {
          vstr_add_strn(&path_new, vstr_str(&self->cur_dir), vstr_len(&self->cur_dir));
      }
      vstr_add_str(&path_new, path);
      int ret = LFSx_API(rename)(&self->lfs, path_old, vstr_null_terminated_str(&path_new));
      vstr_clear(&path_new);
      if (ret < 0) {
          mp_raise_OSError(-ret);
      }
      return mp_const_none;
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_3(MP_VFS_LFSx(rename_obj), MP_VFS_LFSx(rename));
  
  STATIC mp_obj_t MP_VFS_LFSx(mkdir)(mp_obj_t self_in, mp_obj_t path_o) {
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
      const char *path = MP_VFS_LFSx(make_path)(self, path_o);
      int ret = LFSx_API(mkdir)(&self->lfs, path);
      if (ret < 0) {
          mp_raise_OSError(-ret);
      }
      return mp_const_none;
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(mkdir_obj), MP_VFS_LFSx(mkdir));
  
  STATIC mp_obj_t MP_VFS_LFSx(chdir)(mp_obj_t self_in, mp_obj_t path_in) {
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
  
      // Check path exists
      const char *path = MP_VFS_LFSx(make_path)(self, path_in);
      if (path[1] != '\0') {
          // Not at root, check it exists
          struct LFSx_API (info) info;
          int ret = LFSx_API(stat)(&self->lfs, path, &info);
          if (ret < 0 || info.type != LFSx_MACRO(_TYPE_DIR)) {
              mp_raise_OSError(-MP_ENOENT);
          }
      }
  
      // Update cur_dir with new path
      if (path == vstr_str(&self->cur_dir)) {
          self->cur_dir.len = strlen(path);
      } else {
          vstr_reset(&self->cur_dir);
          vstr_add_str(&self->cur_dir, path);
      }
  
      // If not at root add trailing / to make it easy to build paths
      // and then normalise the path
      if (vstr_len(&self->cur_dir) != 1) {
          vstr_add_byte(&self->cur_dir, '/');
  
          #define CWD_LEN (vstr_len(&self->cur_dir))
          size_t to = 1;
          size_t from = 1;
          char *cwd = vstr_str(&self->cur_dir);
          while (from < CWD_LEN) {
              for (; cwd[from] == '/' && from < CWD_LEN; ++from) {
                  // Scan for the start
              }
              if (from > to) {
                  // Found excessive slash chars, squeeze them out
                  vstr_cut_out_bytes(&self->cur_dir, to, from - to);
                  from = to;
              }
              for (; cwd[from] != '/' && from < CWD_LEN; ++from) {
                  // Scan for the next /
              }
              if ((from - to) == 1 && cwd[to] == '.') {
                  // './', ignore
                  vstr_cut_out_bytes(&self->cur_dir, to, ++from - to);
                  from = to;
              } else if ((from - to) == 2 && cwd[to] == '.' && cwd[to + 1] == '.') {
                  // '../', skip back
                  if (to > 1) {
                      // Only skip back if not at the tip
                      for (--to; to > 1 && cwd[to - 1] != '/'; --to) {
                          // Skip back
                      }
                  }
                  vstr_cut_out_bytes(&self->cur_dir, to, ++from - to);
                  from = to;
              } else {
                  // Normal element, keep it and just move the offset
                  to = ++from;
              }
          }
      }
  
      return mp_const_none;
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(chdir_obj), MP_VFS_LFSx(chdir));
  
  STATIC mp_obj_t MP_VFS_LFSx(getcwd)(mp_obj_t self_in) {
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
      if (vstr_len(&self->cur_dir) == 1) {
          return MP_OBJ_NEW_QSTR(MP_QSTR__slash_);
      } else {
          // don't include trailing /
          return mp_obj_new_str(self->cur_dir.buf, self->cur_dir.len - 1);
      }
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_1(MP_VFS_LFSx(getcwd_obj), MP_VFS_LFSx(getcwd));
  
  STATIC mp_obj_t MP_VFS_LFSx(stat)(mp_obj_t self_in, mp_obj_t path_in) {
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
      const char *path = MP_VFS_LFSx(make_path)(self, path_in);
      struct LFSx_API (info) info;
      int ret = LFSx_API(stat)(&self->lfs, path, &info);
      if (ret < 0) {
          mp_raise_OSError(-ret);
      }
  
      mp_uint_t mtime = 0;
      #if LFS_BUILD_VERSION == 2
      uint8_t mtime_buf[8];
      lfs2_ssize_t sz = lfs2_getattr(&self->lfs, path, LFS_ATTR_MTIME, &mtime_buf, sizeof(mtime_buf));
      if (sz == sizeof(mtime_buf)) {
          uint64_t ns = 0;
          for (size_t i = sizeof(mtime_buf); i > 0; --i) {
              ns = ns << 8 | mtime_buf[i - 1];
          }
          // On-disk storage of timestamps uses 1970 as the Epoch, so convert to host's Epoch.
          mtime = timeutils_seconds_since_epoch_from_nanoseconds_since_1970(ns);
      }
      #endif
  
      mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(10, NULL));
      t->items[0] = MP_OBJ_NEW_SMALL_INT(info.type == LFSx_MACRO(_TYPE_REG) ? MP_S_IFREG : MP_S_IFDIR); // st_mode
      t->items[1] = MP_OBJ_NEW_SMALL_INT(0); // st_ino
      t->items[2] = MP_OBJ_NEW_SMALL_INT(0); // st_dev
      t->items[3] = MP_OBJ_NEW_SMALL_INT(0); // st_nlink
      t->items[4] = MP_OBJ_NEW_SMALL_INT(0); // st_uid
      t->items[5] = MP_OBJ_NEW_SMALL_INT(0); // st_gid
      t->items[6] = mp_obj_new_int_from_uint(info.size); // st_size
      t->items[7] = mp_obj_new_int_from_uint(mtime); // st_atime
      t->items[8] = mp_obj_new_int_from_uint(mtime); // st_mtime
      t->items[9] = mp_obj_new_int_from_uint(mtime); // st_ctime
  
      return MP_OBJ_FROM_PTR(t);
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(stat_obj), MP_VFS_LFSx(stat));
  
  STATIC int LFSx_API(traverse_cb)(void *data, LFSx_API(block_t) bl) {
      (void)bl;
      uint32_t *n = (uint32_t *)data;
      *n += 1;
      return LFSx_MACRO(_ERR_OK);
  }
  
  STATIC mp_obj_t MP_VFS_LFSx(statvfs)(mp_obj_t self_in, mp_obj_t path_in) {
      (void)path_in;
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
      uint32_t n_used_blocks = 0;
      #if LFS_BUILD_VERSION == 1
      int ret = LFSx_API(traverse)(&self->lfs, LFSx_API(traverse_cb), &n_used_blocks);
      #else
      int ret = LFSx_API(fs_traverse)(&self->lfs, LFSx_API(traverse_cb), &n_used_blocks);
      #endif
      if (ret < 0) {
          mp_raise_OSError(-ret);
      }
  
      mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(10, NULL));
      t->items[0] = MP_OBJ_NEW_SMALL_INT(self->lfs.cfg->block_size); // f_bsize
      t->items[1] = t->items[0]; // f_frsize
      t->items[2] = MP_OBJ_NEW_SMALL_INT(self->lfs.cfg->block_count); // f_blocks
      t->items[3] = MP_OBJ_NEW_SMALL_INT(self->lfs.cfg->block_count - n_used_blocks); // f_bfree
      t->items[4] = t->items[3]; // f_bavail
      t->items[5] = MP_OBJ_NEW_SMALL_INT(0); // f_files
      t->items[6] = MP_OBJ_NEW_SMALL_INT(0); // f_ffree
      t->items[7] = MP_OBJ_NEW_SMALL_INT(0); // f_favail
      t->items[8] = MP_OBJ_NEW_SMALL_INT(0); // f_flags
      t->items[9] = MP_OBJ_NEW_SMALL_INT(LFSx_MACRO(_NAME_MAX)); // f_namemax
  
      return MP_OBJ_FROM_PTR(t);
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_2(MP_VFS_LFSx(statvfs_obj), MP_VFS_LFSx(statvfs));
  
  STATIC mp_obj_t MP_VFS_LFSx(mount)(mp_obj_t self_in, mp_obj_t readonly, mp_obj_t mkfs) {
      (void)self_in;
      (void)readonly;
      (void)mkfs;
      // already called LFSx_API(mount) in MP_VFS_LFSx(make_new)
      return mp_const_none;
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_3(MP_VFS_LFSx(mount_obj), MP_VFS_LFSx(mount));
  
  STATIC mp_obj_t MP_VFS_LFSx(umount)(mp_obj_t self_in) {
      MP_OBJ_VFS_LFSx *self = MP_OBJ_TO_PTR(self_in);
      // LFS unmount never fails
      LFSx_API(unmount)(&self->lfs);
      return mp_const_none;
  }
  STATIC MP_DEFINE_CONST_FUN_OBJ_1(MP_VFS_LFSx(umount_obj), MP_VFS_LFSx(umount));
  
  STATIC const mp_rom_map_elem_t MP_VFS_LFSx(locals_dict_table)[] = {
      { MP_ROM_QSTR(MP_QSTR_mkfs), MP_ROM_PTR(&MP_VFS_LFSx(mkfs_obj)) },
      { MP_ROM_QSTR(MP_QSTR_open), MP_ROM_PTR(&MP_VFS_LFSx(open_obj)) },
      { MP_ROM_QSTR(MP_QSTR_ilistdir), MP_ROM_PTR(&MP_VFS_LFSx(ilistdir_obj)) },
      { MP_ROM_QSTR(MP_QSTR_mkdir), MP_ROM_PTR(&MP_VFS_LFSx(mkdir_obj)) },
      { MP_ROM_QSTR(MP_QSTR_rmdir), MP_ROM_PTR(&MP_VFS_LFSx(rmdir_obj)) },
      { MP_ROM_QSTR(MP_QSTR_chdir), MP_ROM_PTR(&MP_VFS_LFSx(chdir_obj)) },
      { MP_ROM_QSTR(MP_QSTR_getcwd), MP_ROM_PTR(&MP_VFS_LFSx(getcwd_obj)) },
      { MP_ROM_QSTR(MP_QSTR_remove), MP_ROM_PTR(&MP_VFS_LFSx(remove_obj)) },
      { MP_ROM_QSTR(MP_QSTR_rename), MP_ROM_PTR(&MP_VFS_LFSx(rename_obj)) },
      { MP_ROM_QSTR(MP_QSTR_stat), MP_ROM_PTR(&MP_VFS_LFSx(stat_obj)) },
      { MP_ROM_QSTR(MP_QSTR_statvfs), MP_ROM_PTR(&MP_VFS_LFSx(statvfs_obj)) },
      { MP_ROM_QSTR(MP_QSTR_mount), MP_ROM_PTR(&MP_VFS_LFSx(mount_obj)) },
      { MP_ROM_QSTR(MP_QSTR_umount), MP_ROM_PTR(&MP_VFS_LFSx(umount_obj)) },
  };
  STATIC MP_DEFINE_CONST_DICT(MP_VFS_LFSx(locals_dict), MP_VFS_LFSx(locals_dict_table));
  
  STATIC mp_import_stat_t MP_VFS_LFSx(import_stat)(void *self_in, const char *path) {
      MP_OBJ_VFS_LFSx *self = self_in;
      struct LFSx_API (info) info;
      mp_obj_str_t path_obj = { { &mp_type_str }, 0, 0, (const byte *)path };
      path = MP_VFS_LFSx(make_path)(self, MP_OBJ_FROM_PTR(&path_obj));
      int ret = LFSx_API(stat)(&self->lfs, path, &info);
      if (ret == 0) {
          if (info.type == LFSx_MACRO(_TYPE_REG)) {
              return MP_IMPORT_STAT_FILE;
          } else {
              return MP_IMPORT_STAT_DIR;
          }
      }
      return MP_IMPORT_STAT_NO_EXIST;
  }
  
  STATIC const mp_vfs_proto_t MP_VFS_LFSx(proto) = {
      .import_stat = MP_VFS_LFSx(import_stat),
  };
  
  const mp_obj_type_t MP_TYPE_VFS_LFSx = {
      { &mp_type_type },
      #if LFS_BUILD_VERSION == 1
      .name = MP_QSTR_VfsLfs1,
      #else
      .name = MP_QSTR_VfsLfs2,
      #endif
      .make_new = MP_VFS_LFSx(make_new),
      .protocol = &MP_VFS_LFSx(proto),
      .locals_dict = (mp_obj_dict_t *)&MP_VFS_LFSx(locals_dict),
  };
  