[RFC v7 18/21] um: host: add utilities functions

[Johannes Berg]

On Wed, 2020-10-07 at 15:53 +0100, Anton Ivanov wrote:
> 
> These are actually different on different architectures. These look
> like the x86 values.
> 
> IMHO a kernel strerror() would be the right way of dealing with this
> in the long term (i understand that we cannot call the platform one,
> because it may be different from the internal Linux errors). It will
> be useful in a lot of other places.
> 
> If we leave it as is, we need to make this arch specific at some
> point.
> 
> > +
> > +static const char * const lkl_err_strings[] = {
> > +	"Success",
> > +	"Operation not permitted",

Might be possible to more or less address this (except for arch-specific 
errors that don't always exist) but using C99 initializers?

[0] = "Success",
[EPERM] = "Operation not permitted",
..

johannes