vfs_get_cwd
status_t vfs_get_cwd(dev_t *_mountID, ino_t *_vnodeID);
if (vfs_get_cwd(&log->device, &log->parent) != B_OK) {
fssh_status_t vfs_get_cwd(fssh_mount_id *_mountID, fssh_vnode_id *_vnodeID);