[PATCH 3/6] xinput.sys: Introduce new xinput.sys driver.

[Zebediah Figura (she/her)]

On 8/26/21 12:59 AM, Rémi Bernon wrote:
> +static WCHAR *query_instance_id(DEVICE_OBJECT *device)
> +{
> +    struct device_extension *ext = ext_from_DEVICE_OBJECT(device);
> +    struct device_state *state = ext->state;
> +    DWORD len = wcslen(state->instance_id);
> +    WCHAR *dst;
> +
> +    if ((dst = ExAllocatePool(PagedPool, len * sizeof(WCHAR))))
> +        wcscpy(dst, state->instance_id);
> +
> +    return dst;
> +}
> +
> +static WCHAR *query_device_id(DEVICE_OBJECT *device)
> +{
> +    struct device_extension *ext = ext_from_DEVICE_OBJECT(device);
> +    DWORD len = wcslen(ext->device_id);
> +    WCHAR *dst;
> +
> +    if ((dst = ExAllocatePool(PagedPool, len * sizeof(WCHAR))))
> +        wcscpy(dst, ext->device_id);
> +
> +    return dst;
> +}
> +

Missing space for a null terminator in these two.

In general these could also be memcpy(), although that's a bit of a nitpick.

> +static WCHAR *query_hardware_ids(DEVICE_OBJECT *device)
> +{
> +    struct device_extension *ext = (struct device_extension *)device->DeviceExtension;
> +    DWORD len = wcslen(ext->device_id);
> +    WCHAR *dst;
> +
> +    if ((dst = ExAllocatePool(PagedPool, (len + 2) * sizeof(WCHAR))))
> +    {
> +        wcscpy(dst, ext->device_id);
> +        dst[len + 1] = 0;
> +    }
> +
> +    return dst;
> +}
> +
> +static WCHAR *query_compatible_ids(DEVICE_OBJECT *device)
> +{
> +    DWORD len = wcslen(L"WINEBUS\\WINE_COMP_HID");
> +    WCHAR *dst;
> +
> +    if ((dst = ExAllocatePool(PagedPool, (len + 2) * sizeof(WCHAR))))
> +    {
> +        wcscpy(dst, L"WINEBUS\\WINE_COMP_HID");
> +        dst[len + 1] = 0;
> +    }
> +
> +    return dst;
> +}
> +

Same comment from last time (on a different patch?) about defining a 
static const WCHAR[] variable for that string.

Actually, it seems like quite a lot of feedback from 
<https://www.winehq.org/pipermail/wine-devel/2021-August/193365.html> 
has not been addressed, or responded to.