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Re: OpenBSD -current compat_linux = Bad system call?
- To: <tech_(_at_)_openbsd_(_dot_)_org>
- Subject: Re: OpenBSD -current compat_linux = Bad system call?
- From: "Kenneth R. Westerback" <krw_(_at_)_tcn_(_dot_)_net>
- Date: Tue, 24 Nov 1998 14:27:37 -0500
As predicted, recompiling with SVR4 fixes my immediate problem of
Linux emulation not working, glibc seems to work fine so no need to
find libc5 files.
Now if only I can figure out how to get the jdk working .... but that's for
From: Marc Espie <Marc_(_dot_)_Espie_(_at_)_liafa_(_dot_)_jussieu_(_dot_)_fr>
To: tech_(_at_)_openbsd_(_dot_)_org <tech_(_at_)_openbsd_(_dot_)_org>
Date: Sunday, November 22, 1998 9:04 PM
Subject: Re: OpenBSD -current compat_linux = Bad system call?
>On Sun, Nov 22, 1998 at 10:54:48AM -0500, Kenneth R Westerback wrote:
>> Following the instructions in 'man compat_linux' I get to the point
>> where I have created /emul/linux/etc/ld.so.conf and I want to run
>> /emul/linux/sbin/ldconfig. However, running ldconfig gives me the
>> error message 'Bad system call' and exits without creating the
>> A 'ktrace /emul/linux/sbin/ldconfig' followed by a
>> 'kdump -e linux -f ktrace.out' gives the following output:
>> 18827 ktrace RET brk 0
>> 18827 ktrace CALL oldolduname(0xefbfd86f,0xefbfd7ec,0xefbfd7f4)
>> 18827 ktrace NAMI "/emul/linux/sbin/ldconfig"
>> 18827 ldconfig EMUL "svr4"
>THIS is the important line. You're calling svr4 emulation instead of linux
>Your kernel is compiled with both COMPAT_SVR4 and COMPAT_LINUX in, isn't it
>(if it's generic it is).
>> 18827 ldconfig RET execve 0
>> 18827 ldconfig CALL setegid(0)
>> 18827 ldconfig RET setegid 0
>> 18827 ldconfig CALL getpid
>> 18827 ldconfig RET getpid 18827/0x498b
>> 18827 ldconfig CALL #45 (unimplemented plock)
>linux's 45 is linux_sys_brk, which is implemented.
>unimplemented plock is definitely svr4's turf.
>[ snipping red herrings ]
>> Can anyone spot what I'm doing wrong? What I'm REALLY trying to do is get
>> the jdk installed and working. If someone has specific instructions on
>> best way of accomplishing that, I would be extremely interested in
>I don't know much more about the way compatibility goes... several
>- you managed to put a svr4 ldconfig binary in /emul/linux/sbin/ldconfig
>(I doubt that).
>- openbsd should be able to differentiate between linux and svr4
>but it doesn't.
>- linux and svr4 executables are undistinguishable, in which case the
>should try harder (apply other criteria ?), or GENERIC and the
>In your case, the fix should be rather easy: rebuild a kernel with
>COMPAT_LINUX and *WITHOUT* COMPAT_SVR4
> Marc Espie
>|anime, sf, juggling, unicycle, acrobatics, comics...
>|AmigaOS, OpenBSD, C++, perl, Icon, PostScript...
>| `real programmers don't die, they just get out of beta'
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