Bug#798391: systemd: RuntimeDirectory= creates directory with wrong group

[Julian Brost]

Package: systemd
Version: 215-17+deb8u2
Severity: normal

Dear Maintainer,

if you create to system groups on the system (suppose we call them 'group0' and
'group1') and a user 'some-user' with the primary group group0 and now create a
service file that makes use of User=, Group= and RuntimeDirectory= like this

    [Unit]
    Description=Some Service
    
    [Service]
    Type=simple
    User=some-user
    Group=group1
    RuntimeDirectory=something
    RuntimeDirectoryMode=0750
    ExecStart=/some/service/executable
    
    [Install]
    WantedBy=multi-user.target

If you now start that service, /var/run/something gets created with ownership
some-user:group0 instead of some-user:group1 as documented in systemd.exec(5):

    The directories will have the access mode specified in
    RuntimeDirectoryMode=, and will be owned by the user and group specified in
    User= and Group=.


-- Package-specific info:

-- System Information:
Debian Release: 8.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 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 systemd depends on:
ii  acl             2.2.52-2
ii  adduser         3.113+nmu3
ii  initscripts     2.88dsf-59
ii  libacl1         2.2.52-2
ii  libaudit1       1:2.4-1+b1
ii  libblkid1       2.25.2-6
ii  libc6           2.19-18+deb8u1
ii  libcap2         1:2.24-8
ii  libcap2-bin     1:2.24-8
ii  libcryptsetup4  2:1.6.6-5
ii  libgcrypt20     1.6.3-2
ii  libkmod2        18-3
ii  liblzma5        5.1.1alpha+20120614-2+b3
ii  libpam0g        1.1.8-3.1
ii  libselinux1     2.3-2
ii  libsystemd0     215-17+deb8u2
ii  mount           2.25.2-6
ii  sysv-rc         2.88dsf-59
ii  udev            215-17+deb8u2
ii  util-linux      2.25.2-6

Versions of packages systemd recommends:
ii  dbus            1.8.20-0+deb8u1
ii  libpam-systemd  215-17+deb8u2

Versions of packages systemd suggests:
pn  systemd-ui  <none>

-- no debconf information