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Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always repo
From: |
John Paul Adrian Glaubitz |
Subject: |
Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path |
Date: |
Tue, 09 Jul 2019 15:09:35 -0000 |
On 7/9/19 4:01 PM, Laurent Vivier wrote:
> What is the content of:
>
> /etc/binfmt.d/qemu-m68k.conf
> /proc/sys/fs/binfmt_misc/qemu-m68k
root@nofan:~> cat /etc/binfmt.d/qemu-m68k.conf
:qemu-m68k:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x04:\xff\xff\xff\xff\xff\xff\xfe\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-m68k-static:P
root@nofan:~> cat /proc/sys/fs/binfmt_misc/qemu-m68k
enabled
interpreter /usr/bin/qemu-m68k-static
flags: OCF
offset 0
magic 7f454c4601020100000000000000000000020004
mask ffffffffffffff00fffffffffffffffffffeffff
root@nofan:~>
> what is the result of "file sid-m68k-sbuild/usr/bin/qemu-m68k-static"?
>
> Bonus: if you don't want to copy qemu-m68k-static into the chroot, you
> can use "--persistent" with qemu-binfmt-conf.sh.
I'm doing that and I don't have a copy of qemu in the chroot.
But I think I forgot to pass --persistent to the script while testing.
Adrian
--
.''`. John Paul Adrian Glaubitz
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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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- [Qemu-devel] [Bug 1835839] [NEW] qemu-user: $0 incorrectly always reports absolute path, John Paul Adrian Glaubitz, 2019/07/08
- [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path, Laurent Vivier, 2019/07/09
- Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path, John Paul Adrian Glaubitz, 2019/07/09
- Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path, Laurent Vivier, 2019/07/09
- Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path, John Paul Adrian Glaubitz, 2019/07/09
- Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path, Laurent Vivier, 2019/07/09
- Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path,
John Paul Adrian Glaubitz <=
- Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path, John Paul Adrian Glaubitz, 2019/07/09
- Re: [Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path, Laurent Vivier, 2019/07/09
[Qemu-devel] [Bug 1835839] Re: qemu-user: $0 incorrectly always reports absolute path, Peter Maydell, 2019/07/09