Re: OpenBSD -current compat_linux = Bad system call?

["Kenneth R. Westerback" <krw_(_at_)_tcn_(_dot_)_net>]

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
another thread.

---- Ken

-----Original Message-----
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
>> hints.
>
>> 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
>emulation.
>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
the
>> best way of accomplishing that, I would be extremely interested in
getting
>> them.
>
>I don't know much more about the way compatibility goes... several
>possibilities:
>- 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
executables,
>but it doesn't.
>- linux and svr4 executables are undistinguishable, in which case the
kernel
>should try harder (apply other criteria ?), or GENERIC and the
documentation
>are broken.
>
>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'
>