access_flags_to_smbopen_mode(const int access_flags)
{
	int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE);

	if (masked_flags == GENERIC_READ)
		return SMBOPEN_READ;
	else if (masked_flags == GENERIC_WRITE)
		return SMBOPEN_WRITE;

	/* just go for read/write */
	return SMBOPEN_READWRITE;
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.