[arch-general] Upgrading mlocate: /var/lib/mlocate/ Permissions Warning.

[Tinu Weber]

On Sun, Jun 10, 2018 at 10:51:49 +0100, Ralph Corderoy wrote:
> This morning's `pacman -Su' encountered
> 
>     (10/13) upgrading mlocate           [######################] 100%
>     warning: directory permissions differ on /var/lib/mlocate/ filesystem: 750  package: 755
>     (11/13) upgrading xkeyboard-config  [######################] 100%
> 
> when upgrading from version 0.26-6 to 0.26.git.20170220-1.
> Sure enough, afterwards
> 
>     drwxr-x--- 2 root locate     4096 Jun 10 00:01 /var/lib/mlocate
>     -rw-r----- 1 root locate 16287372 Jun 10 00:01 /var/lib/mlocate/mlocate.db
> 
> https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/mlocate#n58
> seems to take care that /var/lib/locate is 750 on line 58, but that's
> `locate', not `mlocate', so perhaps `mlocate' needs a similar set up?

I don't quite see the relation between locate an mlocate here (other
than that they are provided by the same package and are listed next to
each other in the mtree)...

>     $ zcat /var/lib/pacman/local/mlocate-0.26.git.20170220-1/mtree |
>     > grep '^\./var/lib'
>     ./var/lib time=1528233128.0 mode=755 type=dir
>  ✓  ./var/lib/locate time=1528233128.0 mode=750 gid=21 type=dir
>  ✗  ./var/lib/mlocate time=1528233128.0 mode=755 type=dir
>     $
>     $ tar tvf /var/cache/pacman/pkg/mlocate-0.26.git.20170220-1-x86_64.pkg.tar.xz \
>     >     --warning=no-unknown-keyword var/lib
>     drwxr-xr-x root/root         0 2018-06-05 22:12 var/lib/
>  ✓  drwxr-x--- root/21           0 2018-06-05 22:12 var/lib/locate/
>  ✗  drwxr-xr-x root/root         0 2018-06-05 22:12 var/lib/mlocate/
>     $

The package wants /var/lib/mlocate to have 755, but the directory on
your system has 750. I assume this is because the previous version of
mlocate (0.26-6) set the permission that way:

    $ zcat .MTREE | tail -n4 
  → /set gid=21 mode=750
    ./var/lib time=1491283536.206666666 mode=755 gid=0 type=dir
    ./var/lib/locate time=1491283536.206666666 type=dir
  → ./var/lib/mlocate time=1491283536.156666666 type=dir

I assume pacman never touches permissions on existing directories,
hence the warning.

Best,
Tinu
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