[OE-core][PATCH V4 1/3] base-passwd: add clock group

[Qi.Chen@windriver.com]

From: Chen Qi <Qi.Chen@windriver.com>

New systemd version (v258) introduces a new group, clock, to
"enable applications like linuxptp to open clocks without root
privileges".[1]

This results in warning at do_rootfs time:
WARNING: Group clock has never been defined

Add group clock with gid 81 to fix this issue. The wheel group's
gid is 80, so 81 is chosen. And as the patch to add wheel group
was not accepted by upstream, directly mark this one's upstream
status to be 'Inappropriate'.

[1] https://github.com/systemd/systemd/commit/af96ccfc24bc4803078a46b4ef2cdeb5decdfbcd

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
---
 .../base-passwd/0001-Add-clock-group.patch    | 38 +++++++++++++++++++
 .../base-passwd/base-passwd_3.6.7.bb          |  1 +
 2 files changed, 39 insertions(+)
 create mode 100644 meta/recipes-core/base-passwd/base-passwd/0001-Add-clock-group.patch

diff --git a/meta/recipes-core/base-passwd/base-passwd/0001-Add-clock-group.patch b/meta/recipes-core/base-passwd/base-passwd/0001-Add-clock-group.patch
new file mode 100644
index 0000000000..0e0cd97a19
--- /dev/null
+++ b/meta/recipes-core/base-passwd/base-passwd/0001-Add-clock-group.patch
@@ -0,0 +1,38 @@
+From 4b3a8f347179d7e2a1062eeed13a6474deb28728 Mon Sep 17 00:00:00 2001
+From: Chen Qi <Qi.Chen@windriver.com>
+Date: Thu, 16 Oct 2025 08:48:49 +0800
+Subject: [PATCH] Add clock group
+
+The clock group is needed to "to enable applications like linuxptp
+to open clocks without root privileges". See the link below:
+https://github.com/systemd/systemd/commit/af96ccfc24bc4803078a46b4ef2cdeb5decdfbcd
+
+Note that this group is needed as long as people use udev from
+systemd because 50-udev-default.rules needs it. See the above
+commit.
+
+Upstream-Status: Inappropriate [oe specific]
+[
+  MR: https://salsa.debian.org/debian/base-passwd/-/merge_requests/17
+  It was rejected by upstream. See details in MR's comments.
+]
+
+Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
+---
+ group.master | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/group.master b/group.master
+index e54fd1d..6f84539 100644
+--- a/group.master
++++ b/group.master
+@@ -39,5 +39,6 @@ staff:*:50:
+ games:*:60:
+ shutdown:*:70:
+ wheel:*:80:
++clock:*:81:
+ users:*:100:
+ nogroup:*:65534:
+-- 
+2.34.1
+
diff --git a/meta/recipes-core/base-passwd/base-passwd_3.6.7.bb b/meta/recipes-core/base-passwd/base-passwd_3.6.7.bb
index 177927d674..e4e0890293 100644
--- a/meta/recipes-core/base-passwd/base-passwd_3.6.7.bb
+++ b/meta/recipes-core/base-passwd/base-passwd_3.6.7.bb
@@ -13,6 +13,7 @@ SRC_URI = "https://launchpad.net/debian/+archive/primary/+files/${BPN}_${PV}.tar
            file://0005-Add-kvm-group.patch \
            file://0007-Add-wheel-group.patch \
            file://0001-base-passwd-Add-the-sgx-group.patch \
+           file://0001-Add-clock-group.patch \
            "
 
 SRC_URI[sha256sum] = "cf869870fed7862b57bfa9e99cd5cd6f365e2349705a1b65af7fc182629bd1ab"
-- 
2.34.1