Which version of FreeBSD a binary was compiled for?

[Andrew P.]

On 10/27/05, Joshua Tinnin <krinklyfig at comcast.net> wrote:
> On Wed 26 Oct 05 09:18, "Andrew P." <infofarmer at gmail.com> wrote:
> > On 10/26/05, Robert Huff <roberthuff at rcn.com> wrote:
> > > Andrew P. writes:
> > > >  > file /usr/bin/man
> > > >  >
> > > >  > on my machine outputs:
> > > >  >
> > > >  > /usr/bin/man: ELF 32-bit LSB executable, Intel 80386, version
> > > >  > 1 (FreeBSD), for FreeBSD 5.4-CURRENT (rev 3), dynamically
> > > >  > linked (uses shared libs), stripped
> > > >
> > > >  Oh, it's just that file hasn't leared anything about
> > > >  FreeBSD 6 yet, so it doesn't display version info
> > > >  when run against my binaries.
> > >
> > >         Curious.
> > >
> > > huff@> file /usr/bin/man
> > > /usr/bin/man: ELF 32-bit LSB executable, Intel 80386, version 1
> > > (FreeBSD), for FreeBSD 7.0 (700003), dynamically linked (uses
> > > shared libs), stripped huff@>
> >
> > I tried both versions of file (base system and ports)
> > on 6.0 RC1, none showed any info about that
> > /usr/bin/man (or any other system binary I tried).
> >
> > On my firewall (5.4) it works.
>
> That's odd. Am on 6.0-RC1:
>
> # uname -a
> FreeBSD smogmonster.local 6.0-RC1 FreeBSD 6.0-RC1 #0: Thu Oct 20
> 14:41:23 MDT 2005
> krinklyfig at smogmonster.local:/usr/obj/usr/src/sys/MYKERNEL60  i386
>
> % file /usr/bin/xargs
> /usr/bin/xargs: ELF 32-bit LSB executable, Intel 80386, version 1
> (FreeBSD), for FreeBSD 6.0 (600034), dynamically linked (uses shared
> libs), stripped
>
> % file /usr/bin/man
> /usr/bin/man: ELF 32-bit LSB executable, Intel 80386, version 1
> (FreeBSD), for FreeBSD 6.0 (600034), dynamically linked (uses shared
> libs), stripped
>
> % file /bin/echo
> /bin/echo: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD),
> for FreeBSD 6.0 (600034), dynamically linked (uses shared libs),
> stripped
>
>
> I know I built valgrind just a few days ago:
>
> % file /usr/local/bin/valgrind
> /usr/local/bin/valgrind: ELF 32-bit LSB executable, Intel 80386, version
> 1 (FreeBSD), for FreeBSD 6.0 (600034), statically linked, stripped
>
> vim, too:
>
> % file /usr/local/bin/vim
> /usr/local/bin/vim: ELF 32-bit LSB executable, Intel 80386, version 1
> (FreeBSD), for FreeBSD 6.0 (600034), dynamically linked (uses shared
> libs), stripped
>
>
> I'm not sure what it means when this information isn't accessible, but
> I'd say it's symptomatic of another issue, and most likely it's not
> good. If you built from source, did you follow the procedure described
> in the handbook?
> http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
>
> Not sure, but are you installing kernel after building world, and then
> installing world in single user? I've seen strange things happen if you
> don't do this procedure the right way. Of course, I'm just guessing, as
> I'm not at all sure what could be causing this problem or what your
> exact circumstances are.
>
> - jt
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sat64% uname -a
FreeBSD sat64.net17 6.0-RC1 FreeBSD 6.0-RC1 #2: Fri Oct 14 22:57:08 MSD 2005
 sat at sat64.net17:/usr/obj/usr/src/sys/SATCUR32  i386

sat64% file /usr/bin/xargs
/usr/bin/xargs: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), dyn
amically linked (uses shared libs), stripped

sat64% file /usr/bin/man
/usr/bin/man: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), dynam
ically linked (uses shared libs), stripped

sat64% file /bin/echo
/bin/echo: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), dynamica
lly linked (uses shared libs), stripped

sat64% file /usr/local/bin/waveplay
/usr/local/bin/waveplay: ELF 32-bit LSB executable, Intel 80386, version 1 (Free
BSD), dynamically linked (uses shared libs), stripped

sat64% file /usr/local/lib/oss/bin/ossplay
/usr/local/lib/oss/bin/ossplay: ELF 32-bit LSB executable, Intel 80386, version
1 (FreeBSD), dynamically linked (uses shared libs), stripped

sat64% /usr/local/bin/file /usr/local/lib/oss/bin/ossplay
/usr/local/lib/oss/bin/ossplay: ELF 32-bit LSB executable, Intel 80386, version
1 (FreeBSD), dynamically linked (uses shared libs), stripped


Maybe you're right. I never go to single-user when
upgrading. But then, I'm the only user and there are
not many processes. I'm not gonna worry anyway,
hope it's not a rootkit :-)