On Tue, Jan 19, 2010 at 09:15:00AM +0100, Alexander Leidinger wrote:
> Quoting "Wojciech A. Koszek" <wkos...@freebsd.org> (from Mon, 18 Jan 2010
> 22:46:06 +0000 (UTC)):
>
>> Author: wkoszek
>> Date: Mon Jan 18 22:46:06 2010
>> New Revision: 202598
>> URL: http://svn.freebsd.org/changeset/base/202598
>>
>> Log:
>> Let us to use our libusb(3) in Linuxolator.
>>
>> With this change, Linux binaries can work with our libusb(3) when
>> it's compiled against our header files on GNU/Linux system -- this
>> solves the problem with differences between /dev layouts.
>>
>> With ported libusb(3), I am able to use my USB JTAG cable with Linux
>> binaries that support it.
>
> The commit log is IMHO omitting the info if you checked (or not) that there
> is no linux ioctl in this range. It would also be nice if the comment in
> linux_ioctl.h tells to check that there is no clash with a linux ioctl when
> the min/max is changed.
Sorry for delay.
I have tested it against ioctl() calls submitted by ported libusb(3).
Apparently, all ioctl() requests in my execution path didn't hit our emulator,
thus I was getting warnings about unsupported ioctl(). Thus, I reserved a range
for them. However, it looks like conflict exists with Linux *SND* stuff.
I believe the easiest solution would be based on picking "untypable" values for
commands:
#define BSDEMUL_USB_REQUEST _IOWR(3, 1, struct usb_ctl_request)
And putting them into linux_ioctl.h just like any other ioctl(). Simple mapping
would be provided for those calls to our native USB stack. grep(1) says 3 or 4
passed as a ioctl() should be fine, since none of those seem to be used in
Linux. I could bring the same macros to ported libusb(3) easily, so that we'd
be using something that Linuxolator can finally understand in a unique way.
Does is sound like an acceptable solution?
--
Wojciech A. Koszek
wkos...@freebsd.org
http://FreeBSD.czest.pl/~wkoszek/
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