[OE-core] [PATCH 1/1] systemd: make /etc/sysctl.conf have real effect

[Chen Qi]

In systemd, /etc/sysctl.conf is actually ignored by systemd-sysctl,
because this command only examine *.conf files under a bunch of directories
like /etc/sysctl.d or /usr/lib/sysctl.d.

The problem is we are used to configuring kernel parameters in /etc/sysctl.conf,
so it would be really strange if the configuration in that file doesn't have any
effect.

This patch reference Fedora's solution to this problem, creating a symlink to
/etc/sysctl.conf under /etc/sysctl.d/.

Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
---
 meta/recipes-core/systemd/systemd_216.bb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/meta/recipes-core/systemd/systemd_216.bb b/meta/recipes-core/systemd/systemd_216.bb
index 27a5d92..b730b13 100644
--- a/meta/recipes-core/systemd/systemd_216.bb
+++ b/meta/recipes-core/systemd/systemd_216.bb
@@ -148,6 +148,9 @@ do_install() {
 
 	# Enable journal to forward message to syslog daemon
 	sed -i -e 's/.*ForwardToSyslog.*/ForwardToSyslog=yes/' ${D}${sysconfdir}/systemd/journald.conf
+
+	# Make /etc/sysctl.conf have real effect on systemd based systems
+	ln -sf ../sysctl.conf ${D}${sysconfdir}/sysctl.d/99-sysctl.conf
 }
 
 do_install_ptest () {
-- 
1.9.1