core/openrc: set the default rc_cgroup_mode back to hybrid

openrc-0.51-r0 switched the default rc_cgroup_mode from hybrid
to unified. This revealed an issue with `docker top` which
is critical for our infrastructure:

opencontainers/runc#4097

While the issue is being investigated, we are reverting
the mode back to hybrid to make `docker top` work with
the default openrc configuration.

core/openrc/0104-Set-default-rc_cgroup_mode-back-to-hybrid.patch

@@ -0,0 +1,46 @@
+From b3b8d1f8a2f37209879449ff7604eb628bd04087 Mon Sep 17 00:00:00 2001
+From: Stanislav Kholmanskikh <stanislav.kholmanskikh@bell-sw.com>
+Date: Thu, 26 Oct 2023 15:59:46 +0300
+Subject: [PATCH] Set default rc_cgroup_mode back to hybrid
+
+When it's "unified", docker top fails. See:
+
+https://github.com/opencontainers/runc/issues/4097
+
+It looks like an issue in runc, but fixing it
+may take some time. Meanwhile we should make docker
+work with the default openrc configuration.
+---
+ etc/rc.conf       | 2 +-
+ init.d/cgroups.in | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/etc/rc.conf b/etc/rc.conf
+index 6f226cc..580f310 100644
+--- a/etc/rc.conf
++++ b/etc/rc.conf
+@@ -203,7 +203,7 @@ rc_tty_number=12
+ # cgroups version 1 on /sys/fs/cgroup.
+ # "legacy" mounts cgroups version 1 on /sys/fs/cgroup
+ # "unified" mounts cgroups version 2 on /sys/fs/cgroup
+-#rc_cgroup_mode="unified"
++#rc_cgroup_mode="hybrid"
+
+ # This is a list of controllers which should be enabled for cgroups version 2
+ # when hybrid mode is being used.
+diff --git a/init.d/cgroups.in b/init.d/cgroups.in
+index faf53d8..4fa6b13 100644
+--- a/init.d/cgroups.in
++++ b/init.d/cgroups.in
+@@ -128,7 +128,7 @@ cgroups_unified()
+
+ mount_cgroups()
+ {
+-	case "${rc_cgroup_mode:-unified}" in
++	case "${rc_cgroup_mode:-hybrid}" in
+ 	hybrid) cgroups_hybrid ;;
+ 	legacy) cgroups_legacy ;;
+ 	unified) cgroups_unified ;;
+-- 
+2.41.0
+

core/openrc/APKBUILD

@@ -4,7 +4,7 @@
 pkgname=openrc
 pkgver=0.51
 _ver=${pkgver/_git*/}
-pkgrel=0
+pkgrel=1
 pkgdesc="OpenRC dependency-based init system"
 url="https://github.com/OpenRC/openrc"
 arch="all"
@@ -53,6 +53,7 @@ source="$pkgname-$pkgver.tar.gz::https://github.com/OpenRC/openrc/archive/$pkgve
 	0101-init.d-agetty-depend-on-hostname-to-show-in-prompt.patch
 	0102-openrc-add-rc_quiet_openrc-for-openrc-binary.patch
 	0103-mountinfo-only-explicit-quiet.patch
+	0104-Set-default-rc_cgroup_mode-back-to-hybrid.patch
 	"
 options="!check" # not updated to meson build system, require makefile build
 replaces="$VENDOR_DISTRO-baselayout" # due to move of mkmntdirs
@@ -203,4 +204,5 @@ af17947aa3954e317dc06580da829200e0b0f2ddc37ce842c3fc7fc0d8ca2f40220e4f4665f61b4b
 aaf51536d18188951fe20da1b4459ae8b976f7bb6a1927d5cace1c305037b40481c496d71e6677bad2bb2dbfdeefaa5d54b6f5e326ddd5b471d3ddfff440621c  0101-init.d-agetty-depend-on-hostname-to-show-in-prompt.patch
 2f55eb788c49a87031e2311dd549d720650b48b00bb562e1797e18b1a85f523525b50639d0601040a7f23574988d07b16cd603669ce1d90ee03d75b4fb37b608  0102-openrc-add-rc_quiet_openrc-for-openrc-binary.patch
 bfa580eeac40aba91c98e0e754c3e198068f12d2570c02dfe5a74233cab141514a7a9e7e6d4dea613846a1a8f96ed0ab349194497f63b80ea09cc43a2ba7d79c  0103-mountinfo-only-explicit-quiet.patch
+ebe2fd240449ba45b81d6534a78a411116fe01b429e5337c7b1b0ecf82dc448cfa6487322f44f04754c54c0363abdbca85ebef6f98fe7244af56d210ffaee323  0104-Set-default-rc_cgroup_mode-back-to-hybrid.patch
 "