Example #1
0
/**
 * get object information
 *
 * \param[in] obj the object to be revealed
 * \param[out] info object information will be loaded to info
 * \param[out] err return error code if failed
 *
 * \return U_SUCC or U_FAIL
 *
 * \node the obj should be openned before call this function.
 */
URET uffs_GetObjectInfo(uffs_Object *obj, uffs_ObjectInfo *info, int *err)
{
	uffs_Device *dev = obj->dev;
	URET ret = U_FAIL;

	uffs_DeviceLock(dev);

	if (obj && dev && info) {
		if (obj->parent == PARENT_OF_ROOT) {
			// this is ROOT. UFFS does not physically has root, just fake it ...
			memset(info, 0, sizeof(uffs_ObjectInfo));
			info->serial = obj->serial;
			info->info.attr |= (FILE_ATTR_DIR | FILE_ATTR_WRITE);
			if (err)
				*err = UENOERR;
			ret = U_SUCC;
		}
		else
			ret = _LoadObjectInfo(dev, obj->node, info, obj->type, err);
	}
	else {
		if (err)
			*err = UEINVAL;
	}

	uffs_DeviceUnLock(dev);

	return ret;
}
Example #2
0
/**
 * get object information
 *
 * \param[in] obj the object to be revealed
 * \param[out] info object information will be loaded to info
 * \param[out] err return error code if failed
 *
 * \return U_SUCC or U_FAIL
 *
 * \node the obj should be openned before call this function.
 */
URET uffs_GetObjectInfo(uffs_Object *obj, uffs_ObjectInfo *info, int *err)
{
	uffs_Device *dev = obj->dev;
	URET ret = U_FAIL;

	uffs_DeviceLock(dev);

	if (obj && dev && info) {
		ret = _LoadObjectInfo(dev, obj->node, info, obj->type, err);
	}
	else {
		if (err)
			*err = UEINVAL;
	}

	uffs_DeviceUnLock(dev);

	return ret;
}
Example #3
0
static URET do_FindObject(uffs_FindInfo *f, uffs_ObjectInfo *info, u16 x)
{
	URET ret = U_SUCC;
	TreeNode *node;
	uffs_Device *dev = f->dev;

	if (f->step == 0) 
	{ //!< working on dirs
		while (x != EMPTY_NODE) 
		{
			node = FROM_IDX(x, TPOOL(dev));
			if (node->u.dir.parent == f->serial) 
			{
				f->work = node;
				f->pos++;
				if (info)
					ret = _LoadObjectInfo(dev, node, info, UFFS_TYPE_DIR, NULL);
				goto ext;
			}
			x = node->hash_next;
		}

		f->hash++; //come to next hash entry

		for (; f->hash < DIR_NODE_ENTRY_LEN; f->hash++) 
		{
			x = dev->tree.dir_entry[f->hash];
			while (x != EMPTY_NODE) 
			{
				node = FROM_IDX(x, TPOOL(dev));
				if (node->u.dir.parent == f->serial) 
				{
					f->work = node;
					f->pos++;
					if (info)
						ret = _LoadObjectInfo(dev, node, info, UFFS_TYPE_DIR, NULL);
					goto ext;
				}
				x = node->hash_next;
			}
		}

		//no subdirs, then lookup files ..
		f->step++;
		f->hash = 0;
		x = EMPTY_NODE;
	}

	if (f->step == 1) 
	{

		while (x != EMPTY_NODE) 
		{
			node = FROM_IDX(x, TPOOL(dev));
			if (node->u.file.parent == f->serial) 
			{
				f->work = node;
				f->pos++;
				if (info)
					ret = _LoadObjectInfo(dev, node, info, UFFS_TYPE_FILE, NULL);
				goto ext;
			}
			x = node->hash_next;
		}

		f->hash++; //come to next hash entry

		for (; f->hash < FILE_NODE_ENTRY_LEN; f->hash++) 
		{
			x = dev->tree.file_entry[f->hash];
			while (x != EMPTY_NODE) 
			{
				node = FROM_IDX(x, TPOOL(dev));
				if (node->u.file.parent == f->serial) 
				{
					f->work = node;
					f->pos++;
					if (info) 
						ret = _LoadObjectInfo(dev, node, info, UFFS_TYPE_FILE, NULL);
					goto ext;
				}
				x = node->hash_next;
			}
		}

		//no any files, stopped.
		f->step++;
	}

	ret = U_FAIL;
ext:

	return ret;

}