elogind: add Gentoo patch (#11002)

Close #10997

srcpkgs/elogind/patches/elogind-235.2-legacy-cgroupmode.patch

@@ -0,0 +1,56 @@
+From 003ece760231aba0c661e2390dfd11075d72a8da Mon Sep 17 00:00:00 2001
+From: Sven Eden <yamakuzure@gmx.net>
+Date: Thu, 18 Jan 2018 23:01:12 +0100
+Subject: [PATCH] Prep v235.3 : Fix cgroup hierarchy detection code
+
+There is no sub-grouping with elogind, so /sys/fs/cgroup/elogind is
+not needed to be mounted as cgroup fs in legacy mode.
+
+Fixes Bug https://bugs.gentoo.org/644834
+---
+ src/basic/cgroup-util.c | 17 ++++++++++-------
+ 1 file changed, 10 insertions(+), 7 deletions(-)
+
+diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
+index 7f86c532c..cb60108ef 100644
+--- src/basic/cgroup-util.c
++++ src/basic/cgroup-util.c
+@@ -2550,28 +2550,31 @@ static int cg_unified_update(void) {
+ 
+         if (F_TYPE_EQUAL(fs.f_type, CGROUP2_SUPER_MAGIC))
+                 unified_cache = CGROUP_UNIFIED_ALL;
++#if 0 /// The handling of cgroups is a bit different with elogind
+         else if (F_TYPE_EQUAL(fs.f_type, TMPFS_MAGIC)) {
++#else
++        else if (F_TYPE_EQUAL(fs.f_type, CGROUP_SUPER_MAGIC)
++              || F_TYPE_EQUAL(fs.f_type, TMPFS_MAGIC)) {
++#endif // 0
+                 if (statfs("/sys/fs/cgroup/unified/", &fs) == 0 &&
+                     F_TYPE_EQUAL(fs.f_type, CGROUP2_SUPER_MAGIC)) {
+                         unified_cache = CGROUP_UNIFIED_SYSTEMD;
+                         unified_systemd_v232 = false;
+ #if 0 /// elogind uses its own name
+                 } else if (statfs("/sys/fs/cgroup/systemd/", &fs) == 0 &&
+-                           F_TYPE_EQUAL(fs.f_type, CGROUP2_SUPER_MAGIC)) {
+-                        unified_cache = CGROUP_UNIFIED_SYSTEMD;
+-                        unified_systemd_v232 = true;
+-                } else {
+-                        if (statfs("/sys/fs/cgroup/systemd/", &fs) < 0)
+-                                return -errno;
+ #else
+                 } else if (statfs("/sys/fs/cgroup/elogind/", &fs) == 0 &&
++#endif // 0
+                            F_TYPE_EQUAL(fs.f_type, CGROUP2_SUPER_MAGIC)) {
+                         unified_cache = CGROUP_UNIFIED_SYSTEMD;
+                         unified_systemd_v232 = true;
+                 } else {
+-#endif // 0
++#if 0 /// There is no sub-grouping within elogind
++                        if (statfs("/sys/fs/cgroup/systemd/", &fs) < 0)
++                                return -errno;
+                         if (!F_TYPE_EQUAL(fs.f_type, CGROUP_SUPER_MAGIC))
+                                 return -ENOMEDIUM;
++#endif // 0
+                         unified_cache = CGROUP_UNIFIED_NONE;
+                 }
+         } else

srcpkgs/elogind/template

@@ -1,7 +1,7 @@
 # Template file for 'elogind'
 pkgname=elogind
 version=235.2
-revision=1
+revision=2
 build_style=meson
 hostmakedepends="intltool pkg-config gperf docbook-xsl gettext-devel shadow m4 libxslt git"
 makedepends="libcap-devel libmount-devel libseccomp-devel libblkid-devel pam-devel gettext-devel eudev-libudev-devel acl-devel glib-devel"