static int _mount(vfs_mount_t *mountp)
{
littlefs_desc_t *fs = mountp->private_data;
mutex_init(&fs->lock);
mutex_lock(&fs->lock);
DEBUG("littlefs: mount: mountp=%p\n", (void *)mountp);
if (!fs->config.block_count) {
fs->config.block_count = fs->dev->sector_count - fs->base_addr;
}
if (!fs->config.block_size) {
fs->config.block_size = fs->dev->page_size * fs->dev->pages_per_sector;
}
if (!fs->config.prog_size) {
fs->config.prog_size = fs->dev->page_size;
}
if (!fs->config.read_size) {
fs->config.read_size = fs->dev->page_size;
}
fs->config.lookahead = LITTLEFS_LOOKAHEAD_SIZE;
fs->config.lookahead_buffer = fs->lookahead_buf;
fs->config.context = fs;
fs->config.read = _dev_read;
fs->config.prog = _dev_write;
fs->config.erase = _dev_erase;
fs->config.sync = _dev_sync;
#if LITTLEFS_FILE_BUFFER_SIZE
fs->config.file_buffer = fs->file_buf;
#endif
#if LITTLEFS_READ_BUFFER_SIZE
fs->config.read_buffer = fs->read_buf;
#endif
#if LITTLEFS_PROG_BUFFER_SIZE
fs->config.prog_buffer = fs->prog_buf;
#endif
mtd_init(fs->dev);
int ret = lfs_mount(&fs->fs, &fs->config);
if (ret < 0) {
DEBUG("littlefs: formatting\n");
ret = lfs_format(&fs->fs, &fs->config);
if (ret >= 0) {
DEBUG("littlefs: mounting\n");
ret = lfs_mount(&fs->fs, &fs->config);
}
}
mutex_unlock(&fs->lock);
return littlefs_err_to_errno(ret);
}
int LittleFileSystem::mount(BlockDevice *bd)
{
_mutex.lock();
LFS_INFO("mount(%p)", bd);
_bd = bd;
int err = _bd->init();
if (err) {
LFS_INFO("mount -> %d", err);
_mutex.unlock();
return err;
}
memset(&_config, 0, sizeof(_config));
_config.context = bd;
_config.read = lfs_bd_read;
_config.prog = lfs_bd_prog;
_config.erase = lfs_bd_erase;
_config.sync = lfs_bd_sync;
_config.read_size = bd->get_read_size();
if (_config.read_size < _read_size) {
_config.read_size = _read_size;
}
_config.prog_size = bd->get_program_size();
if (_config.prog_size < _prog_size) {
_config.prog_size = _prog_size;
}
_config.block_size = bd->get_erase_size();
if (_config.block_size < _block_size) {
_config.block_size = _block_size;
}
_config.block_count = bd->size() / _config.block_size;
_config.lookahead = 32 * ((_config.block_count+31)/32);
if (_config.lookahead > _lookahead) {
_config.lookahead = _lookahead;
}
err = lfs_mount(&_lfs, &_config);
LFS_INFO("mount -> %d", lfs_toerror(err));
_mutex.unlock();
return lfs_toerror(err);
}
