[Mono-dev] Unix.Native

[Greg Young]

If we can get a list of all the params that need to be supported and
the varying mappings I have no problem working on it.

I will look into its build etc as I have never dealt with it internally.

Greg

On Tue, Jan 13, 2015 at 3:48 AM, Rodrigo Kumpera <kumpera at gmail.com> wrote:
> I agree we would be better with a better error message.
>
> Said that, right now Mono.Posix lacks a more dedicated maintainer and it
> would be lovely if you
> could bring some love to it. :)
>
> On Mon, Jan 12, 2015 at 8:39 PM, Greg Young <gregoryyoung1 at gmail.com> wrote:
>>
>> There are a ton to surface ... I just ran into this one :)
>>
>> In general I agree with you surfacing is better I was thinking just
>> letting me call it if it doesn't understand it (or having a better
>> message) would be useful. I spun for hours thinking what was wrong
>> with my parameters to the call thinking it for some undocumented
>> reason was returning EINVAL :)
>>
>> On Tue, Jan 13, 2015 at 3:30 AM, Rodrigo Kumpera <kumpera at gmail.com>
>> wrote:
>> > That would change the behavior of the function and translate into a more
>> > fragile API.
>> >
>> > The way to go is to surface this option.
>> >
>> > On Mon, Jan 12, 2015 at 8:23 PM, Greg Young <gregoryyoung1 at gmail.com>
>> > wrote:
>> >>
>> >> I figured out why after a while of looking. The C code translates the
>> >> argument
>> >>
>> >> int Mono_Posix_FromFcntlCommand (int x, int *r)
>> >>
>> >> When its something that is not a known command it returns EINVAL.
>> >> Might a better option be to try to let it pass through otherwise how
>> >> could I call for instance a value on a ac?
>> >>
>> >> Cheers,
>> >>
>> >> Greg
>> >>
>> >> On Tue, Jan 13, 2015 at 2:28 AM, Greg Young <gregoryyoung1 at gmail.com>
>> >> wrote:
>> >> > I have been trying to set F_NOCACHE via fcntl on a mac to no avail.
>> >> >
>> >> >                  r = Syscall.fcntl
>> >> > (handle.DangerousGetHandle().ToInt32(), (FcntlCommand) MAC_F_NOCACHE,
>> >> > 1);
>> >> >                  } while (UnixMarshal.ShouldRetrySyscall ((int) r));
>> >> >                  if (r == -1)
>> >> >                      UnixMarshal.ThrowExceptionForLastError ();
>> >> >
>> >> > (EINVAL)
>> >> >
>> >> > I have tried
>> >> > 48
>> >> > 0x400
>> >> > and 0x40000
>> >> > for F_NOCACHE though from
>> >> >
>> >> >
>> >> > https://github.com/realthunder/mac-headers/blob/master/usr/include/sys/fcntl.h#L256
>> >> >
>> >> > Given FcntlCommandFlags does not expose F_NOCACHE but it still should
>> >> > be fine to jam the value into the enum
>> >> >
>> >> > Has anyone set this before? Chances of finding this on google are
>> >> > slightly better than 0 :)
>> >> >
>> >> > Cheers,
>> >> >
>> >> > Greg
>> >> > --
>> >> > Studying for the Turing test
>> >>
>> >>
>> >>
>> >> --
>> >> Studying for the Turing test
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>> >
>> >
>>
>>
>>
>> --
>> Studying for the Turing test
>
>



-- 
Studying for the Turing test