Re: General device properties API

[Michael <macallan%netbsd.org@localhost>]

Hello,

On Fri, 13 Aug 2021 19:10:20 -0700
Jason Thorpe <thorpej%me.com@localhost> wrote:

> ==> int device_getprop_string(device_t dev, const char *prop, void *buf, int buflen);  
> Fetch the specified property as a string info buf, copying at most
> buflen bytes, **including the terminating NUL**.  If the backing
> store has typing information, ensures the property is a string.
> Returns the actual size of the property in the backing store
> **including the terminating NUL** or -1 if the property does not
> exist or is not a string.

Does this append a NUL if the property doesn't have one?
IIRC OpenFirmware can be a bit inconsistent with that, I remember doing
things like zeroing the buffer, then requesting buffer_size - 1 from
OF_getprop() to make sure the result is NUL terminated.
Looking at you, Apple...

have fun
Michael