debootsrap and problems

R

rdindir

Hello All,

I wanted to use linux emulation/compatibility in FreeBSD (13.1).

I followed the handbook (https://docs.freebsd.org/en/books/handbook/linuxemu/) and the page about linux jails (https://wiki.freebsd.org/LinuxJails).

I have installed a debian system (version bullseye) with "debootstrap bullseye /compat/debian" (following the linux jails page).

I changed the fstab as described in the linux jails page, and chroot into /compat/debian (with chroot /compat/debian /bin/bash). Installed some applications and development tools into /compat debian.

I did not pay attention to my / mount point or directory. Now I am seeing a couple of files in that folder/directory (with ls -al /). Here are the results.

-rw-r--r-- 2 root wheel 1023 May 12 11:25 .cshrc
-rw-r--r-- 2 root wheel 507 May 12 11:25 .profile
drwxrwxr-x 2 root operator 512 Jul 25 21:32 .snap
-r-------- 1 root wheel 33554432 Jul 25 21:32 .sujournal
-r--r--r-- 1 root wheel 6109 May 12 11:33 COPYRIGHT
drwxr-xr-x 2 root wheel 1024 May 12 11:25 bin
drwxr-xr-x 14 root wheel 1536 Sep 10 11:03 boot
drwxr-xr-x 4 root wheel 512 Sep 10 09:35 compat
dr-xr-xr-x 19 root wheel 512 Sep 10 14:04 dev
-rw------- 1 root wheel 4096 Sep 10 11:04 entropy
drwxr-xr-x 28 root wheel 2560 Sep 6 06:43 etc
lrwxr-xr-x 1 root wheel 8 Jul 25 21:35 home -> usr/home
drwxr-xr-x 5 root wheel 1536 May 12 11:28 lib
drwxr-xr-x 3 root wheel 512 May 12 11:25 libexec
drwxr-xr-x 2 root wheel 512 May 12 11:15 media
drwxr-xr-x 2 root wheel 512 Aug 4 18:04 mnt
drwxr-xr-x 2 root wheel 512 May 12 11:15 net
dr-xr-xr-x 1 root wheel 0 Sep 10 11:08 proc
drwxr-xr-x 2 root wheel 2560 May 12 11:27 rescue
drwxr-x--- 3 root wheel 512 Sep 10 09:52 root
drwxr-xr-x 2 root wheel 3072 May 12 11:31 sbin
lrwxr-xr-x 1 root wheel 11 May 12 11:15 sys -> usr/src/sys
drwxrwxrwt 9 root wheel 2048 Sep 10 11:05 tmp
drwxr-xr-x 15 root wheel 512 Jul 25 21:35 usr
drwxr-xr-x 25 root wheel 512 Sep 10 14:04 var

I do not remember how this directory looked like (the / directory). I might have messed up somethings. But I have highlighted the entries above that I am not sure of.

Could you tell me if the home entry is correct? It is a link to usr/home. I am not sure if that was as this before. Is this OK?

Could you also tell me if the sys entry is correct? It is again a link. Again I am not sure about this too. Is this OK?

Do you see anything wrong with this root directory (/)?

Obviously the files COPYRIGHT, .sujournal, .snap, .profile, .cshrc do not belong here (in the / directory). Would this be correct? I am planning on deleting these files, but am not sure, but I think they do not belong there.

I chroot from any place, using (su root -c "chroot /compat/debian /bin/bash"). Would this usage be correct? This does work fine as far as I can tell, because when I list the contents after chroot, I see the contents of the /compat/debian directory, but I am not sure.

Thanks in advance for any help. And I am sorry for a long message like this.

Regards
Riza
 
This is all standard FreeBSD stuff (and btw, it's the point of chroot that you can't reach anything outside of the new / dir it sets).

rdindir said:
-rw-r--r-- 2 root wheel 1023 May 12 11:25 .cshrc
-rw-r--r-- 2 root wheel 507 May 12 11:25 .profile
Click to expand...
Root config files. They do belong here, although I'm not entirely sure why.
rdindir said:
drwxrwxr-x 2 root operator 512 Jul 25 21:32 .snap
-r-------- 1 root wheel 33554432 Jul 25 21:32 .sujournal
Click to expand...
Those belong to UFS, journaling and snapshots.
rdindir said:
-r--r--r-- 1 root wheel 6109 May 12 11:33 COPYRIGHT
Click to expand...
The original FreeBSD copyright notice.
rdindir said:
lrwxr-xr-x 1 root wheel 8 Jul 25 21:35 home -> usr/home
Click to expand...
You can place home directories wherever you like, but both /usr/home and /home are typical places. FreeBSD by default uses the location below /usr and sets a symlink.
rdindir said:
lrwxr-xr-x 1 root wheel 11 May 12 11:15 sys -> usr/src/sys
Click to expand...
Direct symlink to the FreeBSD kernel source.
rdindir said:
Obviously the files COPYRIGHT, .sujournal, .snap, .profile, .cshrc do not belong here (in the / directory). Would this be correct? I am planning on deleting these files, but am not sure, but I think they do not belong there.
Click to expand...
No. Don't touch these.
rdindir said:
I chroot from any place, using (su root -c "chroot /compat/debian /bin/bash"). Would this usage be correct?
Click to expand...
That's correct usage of chroot.

You could also set up a jail in that location. Or you could even use it as an overlay for your real filesystem (like, by default, /compat/linux), so you can actually share files with your host. But that's up to you.
 
zirias@ said:
This is all standard FreeBSD stuff (and btw, it's the point of chroot that you can't reach anything outside of the new / dir it sets).


Root config files. They do belong here, although I'm not entirely sure why.

Those belong to UFS, journaling and snapshots.

The original FreeBSD copyright notice.

You can place home directories wherever you like, but both /usr/home and /home are typical places. FreeBSD by default uses the location below /usr and sets a symlink.

Direct symlink to the FreeBSD kernel source.

No. Don't touch these.

That's correct usage of chroot.

You could also set up a jail in that location. Or you could even use it as an overlay for your real filesystem (like, by default, /compat/linux), so you can actually share files with your host. But that's up to you.
Click to expand...
Hello zirias,

Thank you very much for the information.
 
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