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Date:      Wed, 11 Feb 2015 18:23:33 GMT
From:      Martin Simmons <martin@lispworks.com>
To:        Kevin Oberman <rkoberman@gmail.com>
Cc:        gljennjohn@gmail.com, freebsd-emulation@freebsd.org
Subject:   Re: /compat/linux and /usr/compat/linux
Message-ID:  <201502111823.t1BINXdp009344@higson.cam.lispworks.com>
In-Reply-To: <CAN6yY1uYU3Pvd=NQVDnWfsr6wpGVAwT1ME6m9k%2B6t9WEZ7AVBQ@mail.gmail.com> (message from Kevin Oberman on Tue, 10 Feb 2015 18:12:43 -0800)
References:  <54D4EF23.7050604@astart.com> <20150208111022.4094218f@ernst.home> <54DA6B4B.6080708@astart.com> <a93bcb61fed8194e6831e8a51bd71c57@ultimatedns.net> <CAN6yY1uYU3Pvd=NQVDnWfsr6wpGVAwT1ME6m9k%2B6t9WEZ7AVBQ@mail.gmail.com>

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>>>>> On Tue, 10 Feb 2015 18:12:43 -0800, Kevin Oberman said:
> 
> On Tue, Feb 10, 2015 at 2:54 PM, Chris H <bsd-lists@bsdforge.com> wrote:
> 
> > On Tue, 10 Feb 2015 12:34:19 -0800 Patrick Powell <papowell@astart.com>
> > wrote
> >
> > > On 02/08/15 02:10, Gary Jennejohn wrote:
> > > > On Fri, 06 Feb 2015 08:43:15 -0800
> > > > Patrick Powell <papowell@astart.com> wrote:
> > > >
> > > >> The latest linux-base appears to install into /compat,  rather than
> > > >> /usr/compat
> > > >>
> > > >> However, some FreeBSD FAQ and other documents appear to refer to
> > > >> /usr/compat.
> > > >>
> > > >> Question:  when did the move from using /usr/compat to /compat take
> > > >> place (just out of curiosity)?
> > > >>
> > > >> Question:  can linproc be in /compat/linux/proc or
> > /usr/compat/linux/proc?
> > > >> Question:  if you have a /usr/compat/linux/lib directory will this be
> > > >> added to the
> > > >> libraries for linux emulation?
> > > >>
> > > > /compat has historically always been a symbolic link to /usr/compat:
> > > >
> > > > lrwxr-xr-x  1 root  wheel  10 Nov 25  2011 /compat -> usr/compat
> > > >
> > > > linprocfs on /usr/compat/linux/proc (linprocfs, local)
> > > > but in my /etc/fstab I have
> > > > linproc         /compat/linux/proc      linprocfs rw            0
> >  0
> > > >
> > > > Since /compat is a symbolic link it resolves to /usr/compat when it's
> > > > used.
> > > >
> > > # uname -a
> > > FreeBSD astart2.astart.com 9.3-RELEASE-p9 FreeBSD 9.3-RELEASE-p9 #0: Tue
> > > Jan 27 10:43:40 UTC 2015
> > > root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
> > >
> > > # ls -l / |grep compat
> > >
> > > drwxr-xr-x   3 root  wheel    512 Dec  3 14:41 compat
> > >
> > > # ls -l /usr |grep compat
> > > drwxr-xr-x   3 root  wheel    512 Nov 21 21:06 compat
> > >
> > > Note that neither /compat or /usr/compat are symbolic links.
> > Interesting. On a RELENG_9 (9.3-STABLE); I only return
> > /compat
> > no linux, or compat available in /usr
> > So what's the *real* story behind all this?
> >
> > > ls -ld /compat
> lrwxr-xr-x  1 root  wheel  11 Feb  8 09:18 /compat@ -> /usr/compat
> 
> It is NOT created by the OS or any port, as far as I know.

FWIW, the pre-9.0 installer (sysinstall) creates /usr/compat with /compat
linked to it, but it bsdinstall doesn't.  See
http://lists.freebsd.org/pipermail/freebsd-emulation/2011-December/009339.html

__Martin



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