FreeBSD user home directory
Glen Barber
gjb at FreeBSD.org
Wed Jul 20 22:06:58 UTC 2016
On Wed, Jul 20, 2016 at 02:55:23PM -0600, Russell Haley wrote:
> On Wed, Jul 20, 2016 at 1:56 PM, Glen Barber <gjb at freebsd.org> wrote:
> > On Wed, Jul 20, 2016 at 01:45:47PM -0600, Russell Haley wrote:
> >> Hi guys,
> >>
> >> Note: auto-correct on this computer is setting freebsd to FreeBSD.
> >> Please assume lowercase where appropriate if I don't catch them all.
> >>
> >> I've decided to be lazy and just use the default freebsd user with the
> >> stuff I'm doing right now. I have two separate instances running:
> >> 10.2 in a Digital Ocean instance and arm 11-ALPHA-6 on my
> >> Hummingboard.
> >>
> >> The home directory for the FreeBSD user on the 10.2 cloud instance is
> >> in the expected location of /usr/home/freebsd.
> >>
> >> freebsd at do:~ % pwd
> >> /usr/home/freebsd
> >>
> >> However, the arm build puts the freebsd home directory is under /home/freebsd
> >>
> >> freebsd at imx6:~ % pwd
> >> /home/freebsd
> >>
> >> Thanks to a previous conversation with Mikael I have found that the
> >> script /usr/src/release/tools/arm.subr calls function
> >> arm_create_user() which places the user under /home (like debian).
> >> Can someone indicate if this is a mistake (which I think it is) or on
> >> purpose.
> >> From http://svnweb.freebsd.org/base/stable/11/release/tools/arm.subr?view=markup:
> >>
> >
> > No, this was not a mistake. This is from the pw(8) manual:
> >
> > -d dir This option sets the account's home directory. Normally,
> > this is only used if the home directory is to be different
> > from the default determined from /etc/pw.conf - normally
> > /home with the account name as a subdirectory.
> >
> > It's a matter of preference. Some installs will create /home as
> > a symlink to /usr/home, some with /usr/home as a symlink to /home.
> >
> >> 79 arm_create_user() {
> >> 80 # Create a default user account 'freebsd' with the password 'freebsd',
> >> 81 # and set the default password for the 'root' user to 'root'.
> >> 82 chroot ${CHROOTDIR} /usr/sbin/pw -R ${DESTDIR} \
> >> 83 groupadd freebsd -g 1001
> >> 84 chroot ${CHROOTDIR} mkdir -p ${DESTDIR}/home/freebsd
> >> 85 chroot ${CHROOTDIR} /usr/sbin/pw -R ${DESTDIR} \
> >> 86 useradd freebsd \
> >> 87 -m -M 0755 -w yes -n freebsd -u 1001 -g 1001 -G 0 \
> >> 88 -c 'FreeBSD User' -d '/home/freebsd' -s '/bin/csh'
> >> 89 chroot ${CHROOTDIR} /usr/sbin/pw -R ${DESTDIR} \
> >> 90 usermod root -w yes
> >> 91
> >> 92 return 0
> >> 93}
> >>
> >> Incidentally, I tried to look up the "correct location" by using man
> >> hier and neither instance indicates that a home folder even exists! I
> >> also believe this to be an oversight. Again, if it is, please let me
> >> know and I will attempt to create the correct problem report and
> >> hopefully at some point some patches (i'm not in my usual environment
> >> so doing stuff with src isn't convenient right now).
> >>
> >
> > With the manual page quote above, I don't think there is any "wrong"
> > behavior here.
> >
> > On your DigitalOcean machine, does /home exist? If so, I suspect it is
> > a symlink.
>
> Thanks for the awesome fast response Glen. Yes, you are correct there
> is a symlink to /home in the DO instance. However in the arm instance
> there are no symlinks in either direction:
>
> freebsd at imx6:/% ll
> total 81
> -rw-r--r-- 2 root wheel 1481 Jul 1 16:06 .cshrc
> -rw-r--r-- 2 root wheel 750 Jul 1 16:06 .profile
> drwxrwxr-x 2 root operator 512 Jul 1 15:42 .snap/
> -r--r--r-- 1 root wheel 6190 Jul 1 15:44 COPYRIGHT
> drwxr-xr-x 2 root wheel 1024 Jul 1 15:43 bin/
> drwxr-xr-x 9 root wheel 1024 Jul 1 17:25 boot/
> dr-xr-xr-x 17 root wheel 512 Jul 1 17:25 dev/
> -rw-r--r-- 1 root wheel 4096 Jul 1 17:25 entropy
> drwxr-xr-x 25 root wheel 2560 Jul 2 11:52 etc/
> drwxr-xr-x 4 root wheel 512 Jul 2 11:52 home/
> drwxr-xr-x 4 root wheel 1536 Jul 1 15:43 lib/
> drwxr-xr-x 3 root wheel 512 Jul 1 15:42 libexec/
> drwxr-xr-x 2 root wheel 512 Jul 1 15:42 media/
> drwxr-xr-x 2 root wheel 512 Jul 1 15:42 mnt/
> dr-xr-xr-x 2 root wheel 512 Jul 1 15:42 proc/
> drwxr-xr-x 2 root wheel 2560 Jul 1 15:43 rescue/
> drwxr-xr-x 6 root wheel 512 Jul 2 00:02 root/
> drwxr-xr-x 2 root wheel 2560 Jul 1 15:44 sbin/
> lrwxr-xr-x 1 root wheel 11 Jul 1 15:42 sys@ -> usr/src/sys
> drwxrwxrwt 7 root wheel 180 Jul 2 09:35 tmp/
> drwxr-xr-x 15 root wheel 512 Jul 2 11:52 usr/
> drwxr-xr-x 24 root wheel 512 Jul 1 17:25 var/
>
>
>
> freebsd at imx6:/usr% ll
> total 76
> drwxr-xr-x 2 root wheel 8192 Jul 1 15:44 bin/
> drwxr-xr-x 2 root wheel 512 Jul 2 11:52 home/
> drwxr-xr-x 54 root wheel 6656 Jul 1 15:43 include/
> drwxr-xr-x 10 root wheel 15360 Jul 1 15:44 lib/
> drwxr-xr-x 4 root wheel 512 Jul 1 15:42 lib32/
> drwxr-xr-x 6 root wheel 512 Jul 1 15:42 libdata/
> drwxr-xr-x 8 root wheel 1536 Jul 1 15:44 libexec/
> drwxr-xr-x 14 root wheel 512 Jul 2 00:02 local/
> drwxr-xr-x 2 root wheel 512 Jul 1 15:42 obj/
> drwxr-xr-x 2 root wheel 5120 Jul 1 15:44 sbin/
> drwxr-xr-x 33 root wheel 1024 Jul 1 15:42 share/
> drwxr-xr-x 2 root wheel 512 Jul 1 15:42 src/
> drwxr-xr-x 15 root wheel 512 Jul 1 15:44 tests/
>
> Which seems to me to still be in error as there are now TWO home directories.
>
This seems strange. On one of my boards, /usr/home does not exist.
freebsd at rpi2:~ % ls /usr/home
ls: /usr/home: No such file or directory
In addition, look at the timestamp of your /usr/home.
Could you do an ls(1) in there? I'm curious what added that.
Anyway, this is easy to fix.
> Maybe I haven't been paying enough attention when generating users but
> I could have sworn that all previous users I create went under
> /usr/home (I know, I'm being pedantic if the symlink exists).
>
Well, no, you're not being pedantic. This is a "what does the user
expect" issue. Thank you for the report.
I'll look into this a bit more.
Glen
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