Control: tag -1 + patch fixed-upstream
On Sat, 30 Jan 2016 13:02:44 +0300 Michael Tokarev <m...@tls.msk.ru> wrote:
[]
> I looked at this, and can say it is not an easy thing to implement.
>
> The system call is trivial to do in qemu, but the problem is that
> we have to catch reads from the file descriptor returned, and
> convert signalfd_siginfo structure between host and target.
>
> That's probably why it hasn't been implemented so far.
Actually it HAS been implemented, in commit:
commit e36800c91a74b656b4b4c74483863950cf9ec202
Author: Laurent Vivier <laur...@vivier.eu>
Date: Fri Oct 2 14:48:09 2015 +0200
linux-user: add signalfd/signalfd4 syscalls
This patch introduces a system very similar to the one used in the kernel
to attach specific functions to a given file descriptor.
In this case, we attach a specific "host_to_target()" translator to the fd
returned by signalfd() to be able to byte-swap the signalfd_siginfo
structure provided by read().
Which has been applied upstream after 2.5 version.
I'll include it in debian once 2.6 will be out. Hopefully no
backporting of large stuff will be needed.
Thanks,
/mjt
