Date: Thu, 24 Aug 2006 17:10:26 -0600 From: John E Hein <jhein@timing.com> To: Boris Samorodov <bsam@ipt.ru> Cc: Alexander Leidinger <Alexander@Leidinger.net>, freebsd-emulation@freebsd.org, Markus Hoenicka <markus.hoenicka@mhoenicka.de> Subject: Re: ports/102474: linux_base-fc-4_8 appears broken, does not allow to run Linux binaries Message-ID: <17646.12770.712906.640034@gromit.timing.com> In-Reply-To: <48492411@bsam.ru> References: <E1GGL6p-0000Bd-2Z@bsam.ru> <17646.3029.176290.711490@yeti.mininet> <80657181@bsam.ru> <17646.6613.28038.72832@yeti.mininet> <14575472@bsam.ru> <17646.7832.330245.660064@yeti.mininet> <48492411@bsam.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
Boris Samorodov wrote at 02:28 +0400 on Aug 25, 2006:
> Aha, /compat/linux/usr/bin/ldd is a script. Can't say for sure should
> it work or not but something strange does exist:
> -----
> 24546 ktrace RET ktrace 0
> 24546 ktrace CALL execve(0xbfbfe85e,0xbfbfe75c,0xbfbfe768)
> 24546 ktrace NAMI "/compat/linux/usr/bin/ldd"
> 24546 ktrace NAMI "/bin/sh"
> 24546 ktrace NAMI "/libexec/ld-elf.so.1"
> 24546 sh RET execve 0
^^^^ you probably get something different if
you use linux_kdump?
As far as ldd goes, it calls ld-linux.so.2 (yes, the lib is
executable) which is a sym link to ld-2.3.6.so
file /compat/linux/lib/ld-2.3.6.so
/compat/linux/lib/ld-2.3.6.so: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), not stripped
Note the improper brandelf if it were to be run as an executable
(should be GNU/Linux, not SYSV).
You could copy ld-2.3.6.so to somewhere else, brandelf -t Linux it (I
wouldn't do that to the real /compat/linux/lib/ld-2.3.6.so), and tell
the ldd script to use that version.
It would probably be best to run the script with bash rather than
FreeBSD's sh. I suspect there are bash-specific idioms in that
script.
I tried that and ld-2.3.6.so returns funky results (not surprising)...
/tmp/ld-2.3.6.so --verify /compat/linux/bin/bash ; echo $?
1
On a real linux box:
/lib/ld-2.3.6.so --verify /bin/bash ; echo status: $?
6
status: 0
To get /compat/linux/lib/ld-linux.so.2 (and thus
/compat/linux/usr/bin/ldd) working in the emulated environment would
probably take some hacking. I vaguely recall this being discussed
before?
To the OP, why not just use native FreeBSD ldd?
ldd /compat/linux/bin/bash
/compat/linux/bin/bash:
libtermcap.so.2 => /lib/libtermcap.so.2 (0x28109000)
libdl.so.2 => /lib/libdl.so.2 (0x2810e000)
libc.so.6 => /lib/obsolete/linuxthreads/libc.so.6 (0x28112000)
/lib/ld-linux.so.2 (0x280e9000)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?17646.12770.712906.640034>