Bug#854548: Package install failure - dpkg: error processing package xrdp (--configure)

[Thorsten Glaser]

Forwarding to the BTS because, apparently, there’s a bug in
jessie-backports or POSSIBLY also in stretch, and so it’s
all archived in the same place. Comments inline, but full quote.

On Thu, 26 Oct 2017, Stefan Seidel wrote:

> Hi,
>
> I think I incorrectly reported this as Followup-For: Bug #862837, so here it is to the backports mailing list.
>
> Upon upgrading xrdp from xrdp/0.9.1-4 to xrdp/0.9.1-9 (jessie backports), xrdp
> still doesn't start. I get these errors in the journal:
>
> Failed at step RUNTIME_DIRECTORY spawning /bin/sh: File exists
> xrdp.service: control process exited, code=exited status=233
>
> I believe there are two issues that prevent the start:
>
> 1. /var/run/xrdp needs to be chgrp'd to xrdp, otherwise xrdp will never be able
> to start (that bug is actually present for a long time, I've always worked
> around it using a Puppet rule)

I just looked it up (as I use sysvinit myself), systemd is specified
to chown RuntimeDirectory to User/Group. Apparently, in your case,
it’s created by xrdp-sesman.service (which does NOT have the User/Group
lines) instead of xrdp.service (which does).

Please report this as separate bug against xrdp in the BTS.

ObNote: the sysvinit script does not chown either, and it still
Works For Me™… and I’d think that only the sockdir would need
to belong to xrdp, not the parent dir with the pidfiles.

> 2. I needed to apply the workaround mentioned in https://bugs.debian.org/cgi-
> bin/bugreport.cgi?bug=854548;msg=30 to finally make it start up

Dominik says that that is a workaround for a bug in systemd in jessie
for which the cause is unknown, or something… I’ll leave this for him
to answer in more detail.

@Nik: might the above point (same RuntimeDirectory, different User/Group
and unspecified(?) execution order) be the reason for this bug as well?

@Stefan, Tim: actually, then you’re supposed to remove it from
xrdp-sesman.service, not from xrdp.service…

Hm, actually, considering all of these: is it possible that xrdp
chowns the sockdir itself (so sysvinit works), but that systemd
creates the RuntimeDirectory twice? Can systemd units actually
share a RuntimeDirectory?

>
> I hope this is helpful.
>
> Stefan
>
>
>
> -- System Information:
> Debian Release: 8.9
> APT prefers oldstable-updates
> APT policy: (500, 'oldstable-updates'), (500, 'oldstable')
> Architecture: amd64 (x86_64)
>
> Kernel: Linux 4.4.83-1-pve (SMP w/8 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
>
> Versions of packages xrdp depends on:
> ii adduser 3.113+nmu3
> ii init-system-helpers 1.22
> ii libc6 2.19-18+deb8u10
> ii libfuse2 2.9.3-15+deb8u2
> ii libjpeg62-turbo 1:1.3.1-12
> ii libopus0 1.1-2
> ii libpam0g 1.1.8-3.1+deb8u2+b1
> ii libssl1.0.0 1.0.1t-1+deb8u6
> ii libx11-6 2:1.6.2-3
> ii libxfixes3 1:5.0.1-2+b2
> ii libxrandr2 2:1.4.2-1+b1
> ii lsb-base 4.1+Debian13+nmu1
> ii ssl-cert 1.0.35
>
> Versions of packages xrdp recommends:
> pn fuse <none>
> ii xorgxrdp 0.9.1-9~bpo8+1
>
> Versions of packages xrdp suggests:
> pn guacamole <none>
>
> Versions of packages xorgxrdp depends on:
> ii libc6 2.19-18+deb8u10
> pn xorg-input-abi-21 <none>
> ii xserver-xorg-core [xorg-video-abi-18] 2:1.16.4-1+deb8u2
>
> Versions of packages xorgxrdp recommends:
> ii xorg 1:7.7+7
>
> Versions of packages xrdp is related to:
> pn vnc-server <none>
> pn xserver-xorg-legacy <none>
>
> -- Configuration Files:
> /etc/pam.d/xrdp-sesman changed [not included]
>
> -- debconf-show failed
>