[OE-core] [PATCH] systemd: remove the group 'lock'

[Hannu Lounento]

The upstream commit 61f32bff6130a44d077886d38cff89ad161bf177 included in
the release v229 removed the use of the group:

    commit 61f32bff6130a44d077886d38cff89ad161bf177
    Author: Martin Pitt <martin.pitt at ubuntu.com>
    Date:   Mon Feb 1 12:09:34 2016 +0100

        tmpfiles: drop /run/lock/lockdev

        Hardly any software uses that any more, and better locking mechanisms like
        flock() have been available for many years.

        Also drop the corresponding "lock" group from sysusers.d/basic.conf.in, as
        nothing else is using this.

    [...]
    diff --git a/sysusers.d/basic.conf.in b/sysusers.d/basic.conf.in
    index 823d6cb20..b2dc5ebd4 100644
    --- a/sysusers.d/basic.conf.in
    +++ b/sysusers.d/basic.conf.in
    @@ -19,7 +19,6 @@ g wheel   -     -            -

     # Access to certain kernel and userspace facilities
     g kmem    -     -            -
    -g lock    -     -            -
     g tty     @TTY_GID@     -            -
     g utmp    -     -            -
    [...]

The upstream documentation doc/UIDS-GIDS.md says that basic.conf.in is "the
precise list of the currently defined groups":

    ## Special `systemd` GIDs

    `systemd` defines no special UIDs beyond what Linux already defines (see
    above). However, it does define some special group/GID assignments, which are
    primarily used for `systemd-udevd`'s device management. The precise list of the
    currently defined groups is found in this `sysusers.d` snippet:
    [basic.conf](https://raw.githubusercontent.com/systemd/systemd/master/sysusers.d/basic.conf.in)

    It's strongly recommended that downstream distributions include these groups in
    their default group databases.

Removing the creation of the group also avoids the need to define a GID
for it when using static ids.

Signed-off-by: Hannu Lounento <hannu.lounento at vaisala.com>
---
 meta/recipes-core/systemd/systemd_237.bb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/recipes-core/systemd/systemd_237.bb b/meta/recipes-core/systemd/systemd_237.bb
index b7c2113255..46bc30b478 100644
--- a/meta/recipes-core/systemd/systemd_237.bb
+++ b/meta/recipes-core/systemd/systemd_237.bb
@@ -310,7 +310,7 @@ USERADD_PARAM_${PN} += "${@bb.utils.contains('PACKAGECONFIG', 'networkd', '--sys
 USERADD_PARAM_${PN} += "${@bb.utils.contains('PACKAGECONFIG', 'coredump', '--system -d / -M --shell /bin/nologin systemd-coredump;', '', d)}"
 USERADD_PARAM_${PN} += "${@bb.utils.contains('PACKAGECONFIG', 'resolved', '--system -d / -M --shell /bin/nologin systemd-resolve;', '', d)}"
 USERADD_PARAM_${PN} += "${@bb.utils.contains('PACKAGECONFIG', 'polkit', '--system --no-create-home --user-group --home-dir ${sysconfdir}/polkit-1 polkitd;', '', d)}"
-GROUPADD_PARAM_${PN} = "-r lock; -r systemd-journal"
+GROUPADD_PARAM_${PN} = "-r systemd-journal"
 USERADD_PARAM_${PN}-extra-utils += "--system -d / -M --shell /bin/nologin systemd-bus-proxy;"
 
 FILES_${PN}-analyze = "${bindir}/systemd-analyze"
-- 
2.11.0