Date: Tue, 2 Dec 2008 23:13:49 +0100 From: Ed Schouten <ed@80386.nl> To: Arjan van der Velde <noresult@xs4all.nl> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: TCSBRK not implemented in linux compat Message-ID: <20081202221349.GT64969@hoeg.nl> In-Reply-To: <54A75E03-AE64-4DD9-8D15-7A7499E73D43@xs4all.nl> References: <54A75E03-AE64-4DD9-8D15-7A7499E73D43@xs4all.nl>
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Hello Arjan,
* Arjan van der Velde <noresult@xs4all.nl> wrote:
> While trying to get a linux binary running on FreeBSD I encountered the
> following problem during serial port I/O.
>
> Dec 1 22:22:34 soekris kernel: linux: pid 7239 (linuxbinary): ioctl
> fd=0, cmd=0x5409 ('T',9) is not implemented
>
> 0x5409 turns out to be TCSBRK, which is not implemented (yet?). Can
> anyone give me some clues where / how to start implementing this? It
> seems like the linux way of handling it is to call tcdrain(), but I'm
> not sure as to how this translates to the FreeBSD compat layer.
I think you could just make it call TIOCDRAIN directly. Unfortunately
that's not correct if the argument is 0, because then we have to call
TIOCSBRK and TIOCCBRK with a 250 msec interval. I guess adding some kind
of printf() there should be good enough for now.
I can't look into it right now, because I have to get up at 6:15
tomorrow. Sorry! :-/
--
Ed Schouten <ed@80386.nl>
WWW: http://80386.nl/
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