Re: [Qemu-devel] [PATCH v6 48/49] linux-user: Split out ioctl

[Laurent Vivier]

On 13/02/2019 14:09, Laurent Vivier wrote:
> Hi,
> 
> this one is really a cut'n'paste but it introduces a problem with 
> qemu-alpha, I don't know how/why:
> 
>   $ sudo unshare --ipc --uts --pid --fork --kill-child --mount chroot 
> chroot/alpha/sid/
>   Unsupported ioctl: cmd=0x80047476
> 
> And then it hangs.
> 
> I'll try to debug.

In fact it happens with sid, with ppc64 too, but not with m68k and sh4.

And only with "unshare --pid --fork".

Without "unshare", the result is:

  Unsupported ioctl: cmd=0x80047476
  bash: cannot set terminal process group (11507): Function not implemented
  bash: no job control in this shell
  Unsupported ioctl: cmd=0x80087467
  Unsupported ioctl: cmd=0x80087467
  Unsupported ioctl: cmd=0x802c7415

Thanks,
Laurent