/**
* 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;
}
/**
* 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;
}
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;
}