Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path

[John Paul Adrian Glaubitz]

On 7/9/19 2:51 PM, Laurent Vivier wrote:
> if you use systemctl, the parameter of "./scripts/qemu-binfmt-conf.sh"
> must be "--systemd m68k" rather than "--debian".

I tried that and I now get:

root@nofan:/local_scratch/sid-m68k-sbuild> chroot .
chroot: failed to run command ‘/bin/bash’: No such file or directory
root@nofan:/local_scratch/sid-m68k-sbuild>

>> But still don't get the correct path:
>>
>> (sid-m68k-sbuild)root@nofan:/# sh -c 'echo $0'
>> /bin/sh
>> (sid-m68k-sbuild)root@nofan:/#
> 
> Well, I've tested that, and it should work...

Oh, I'm not arguing that. I'm sure the error is on my side ;). I'm just trying
to find out what I'm doing wrong.

-- 
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`. `'   Freie Universitaet Berlin - address@hidden
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https://bugs.launchpad.net/bugs/1835839

Title:
  qemu-user: $0 incorrectly always reports absolute path

Status in QEMU:
  New

Bug description:
  We just ran into an issue with the Perl package on Debian/m68k when
  being built with qemu-user [1].

  The problem can be boiled down to qemu-user always reporting absolute
  paths for the shell variable $0 no matter on how the command was
  invoked.

  A simple reproducer is this:

  On normal system (no emulation):

  root@nofan:~> sh -c 'echo $0'
  sh
  root@nofan:~>

  On qemu-user:

  (sid-m68k-sbuild)root@nofan:/# sh -c 'echo $0'
  /bin/sh
  (sid-m68k-sbuild)root@nofan:/#

  > [1] https://lists.debian.org/debian-68k/2019/07/msg00007.html

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