rem: return set_cwd(fd, pathBuffer, true);
add: return set_cwd(fd, path != NULL ? pathBuffer : NULL, true);
context: _kern_setcwd(int fd, const char *path){	char pathBuffer[B_PATH_NAME_LENGTH + 1];	if (fd == -1)		strlcpy(pathBuffer, path, B_PATH_NAME_LENGTH);	return set_cwd(fd, pathBuffer, true);}