/**
* 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;
}
static void uffs_ObjectDevLock(uffs_Object *obj)
{
if (obj) {
if (obj->dev) {
uffs_DeviceLock(obj->dev);
obj->dev_lock_count++;
}
}
}
/**
* Find the first object
*
* \param[out] info the object information will be filled to info.
* if info is NULL, then skip this object.
* \param[in] f uffs_FindInfo structure, openned by uffs_FindObjectOpen().
*
* \return U_SUCC if an object is found, U_FAIL if no object is found.
*/
URET uffs_FindObjectFirst(uffs_ObjectInfo * info, uffs_FindInfo * f)
{
uffs_Device *dev = f->dev;
URET ret = U_SUCC;
uffs_DeviceLock(dev);
ResetFindInfo(f);
ret = do_FindObject(f, info, dev->tree.dir_entry[0]);
uffs_DeviceUnLock(dev);
return ret;
}
/**
* Find the next object.
*
* \param[out] info the object information will be filled to info.
* if info is NULL, then skip this object.
* \param[in] f uffs_FindInfo structure, openned by uffs_FindObjectOpen().
*
* \return U_SUCC if an object is found, U_FAIL if no object is found.
*
* \note uffs_FindObjectFirst() should be called before uffs_FindObjectNext().
*/
URET uffs_FindObjectNext(uffs_ObjectInfo *info, uffs_FindInfo * f)
{
uffs_Device *dev = f->dev;
URET ret = U_SUCC;
if (f->dev == NULL || f->step > 1)
return U_FAIL;
if (f->work == NULL)
return uffs_FindObjectFirst(info, f);
uffs_DeviceLock(dev);
ret = do_FindObject(f, info, f->work->hash_next);
uffs_DeviceUnLock(dev);
return ret;
}
/**
* 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;
}