Re: chrooting in a 32-bit world from a 64-bit kernel+world

On Tuesday 30 September 2008 21:57:22 Olivier Smedts wrote:
On Tue, Sep 30, 2008 at 09:28:39PM +0200, Mel wrote:
On Tuesday 30 September 2008 20:44:02 Olivier Smedts wrote:
So far I've got a working FreeBSD (kernel+world) in a 512MB image I can
dump on a CompactFlash card :
# cd /usr/src
# make buildworld TARGET=i386
# make buildkernel TARGET=i386
# mount /dev/md0a /mnt
(md0 is a 512MB file backed image I bsdlabel'd and newfs'd before)
# make installworld TARGET=i386 DESTDIR=/mnt
# make distribution TARGET=i386 DESTDIR=/mnt
# make installkernel TARGET=i386 DESTDIR=/mnt

The problem is that I can't chroot in this 32-bit world.
Say I want to install the sysutils/screen port in /mnt :

# mkdir /mnt/usr/ports
# mount -t nullfs /usr/ports /mnt/usr/ports
# mount -t devfs devfs /mnt/dev

It's a guess, but at this point:
chroot /mnt /etc/rc.d/ldconfig start

First, thank you for replying so fast !

/etc/rc.d/ldconfig is a /bin/sh script, and I can't run /bin/sh in this
chroot. Same errors.

If that don't work:
/sbin/ldconfig -32 -s -f /mnt/var/run/ld-elf.so.hints /mnt/lib \
/mnt/usr/lib

After that command, the shared libraries are found, but ld refers to /mnt :
# ldconfig -rf /mnt/var/run/ld-elf.so.hints
/mnt/var/run/ld-elf.so.hints:
search directories: /mnt/lib:/mnt/usr/lib
0:-lc.7 => /mnt/lib/libc.so.7
1:-lcrypt.4 => /mnt/lib/libcrypt.so.4
[...]

Right.
cd /mnt
rmdir mnt
ln -s . mnt

The old chroot symlink hack.

And then when trying to chroot, still the same problem. I also can't launch
ldconfig in the jail :
# chroot /mnt/ /sbin/ldconfig -32 -s -f /var/run/ld-elf.so.hints /lib
/usr/lib ELF interpreter /libexec/ld-elf.so.1 not found
Abandon

If you have /rescue there, maybe chroot /mnt /rescue/ldconfig /lib /usr/lib
will help you. I'm pretty sure it's the missing hints causing this.

If all this fails, I'd try running /mnt as a jail.
--
Mel

Problem with today's modular software: they start with the modules
and never get to the software part.
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