int nubus_readdir()

in nubus.c [268:294]

• 16 lines of code
• 3 McCabe index (conditional complexity)

int nubus_readdir(struct nubus_dir *nd, struct nubus_dirent *ent)
{
	u32 resid;

	if (nd->done)
		return -1;

	/* Do this first, otherwise nubus_rewind & co are off by 4 */
	ent->base = nd->ptr;

	/* This moves nd->ptr forward */
	resid = nubus_get_rom(&nd->ptr, 4, nd->mask);

	/* EOL marker, as per the Apple docs */
	if ((resid & 0xff000000) == 0xff000000) {
		/* Mark it as done */
		nd->done = 1;
		return -1;
	}

	/* First byte is the resource ID */
	ent->type = resid >> 24;
	/* Low 3 bytes might contain data (or might not) */
	ent->data = resid & 0xffffff;
	ent->mask = nd->mask;
	return 0;
}