busybox-syslog: add configuration file /etc/syslog.conf

By default, busybox has CONFIG_FEATURE_SYSLOGD_CFG enabled, but it
doesn't ship a configuration file.

This patch adds a configuration file (/etc/syslog.conf) to the
busybox-syslog package. This configuration file mainly serves as a
placeholder now.

The advantages of this change are:
1. Make the users aware of the fact that the /etc/syslog.conf file
   will actually be parsed by busybox's syslogd utility. And configuring
   that file will change the logging behaviour.
2. In a systemd based system, this file will prevent the same configuration
   file provided by the sysklogd package from messing things up.

[YOCTO #5066]

(From OE-Core rev: b7f6688f0700a1575037362af7a8ca94dccce471)

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

3 files changed, 7 insertions, 1 deletions

diff --git a/meta/recipes-core/busybox/busybox.inc b/meta/recipes-core/busybox/busybox.inc
index b4cf20a77e..b3d0cd25de 100644
--- a/meta/recipes-core/busybox/busybox.inc
+++ b/meta/recipes-core/busybox/busybox.inc
@@ -21,7 +21,7 @@ export EXTRA_LDFLAGS = "${LDFLAGS}"
 PACKAGES =+ "${PN}-httpd ${PN}-udhcpd ${PN}-udhcpc ${PN}-syslog ${PN}-mdev ${PN}-hwclock"
 
 FILES_${PN}-httpd = "${sysconfdir}/init.d/busybox-httpd /srv/www"
-FILES_${PN}-syslog = "${sysconfdir}/init.d/syslog* ${sysconfdir}/syslog-startup.conf* ${systemd_unitdir}/system/syslog.service ${sysconfdir}/default/busybox-syslog"
+FILES_${PN}-syslog = "${sysconfdir}/init.d/syslog* ${sysconfdir}/syslog-startup.conf* ${sysconfdir}/syslog.conf* ${systemd_unitdir}/system/syslog.service ${sysconfdir}/default/busybox-syslog"
 FILES_${PN}-mdev = "${sysconfdir}/init.d/mdev ${sysconfdir}/mdev.conf"
 FILES_${PN}-udhcpd = "${sysconfdir}/init.d/busybox-udhcpd"
 FILES_${PN}-udhcpc = "${sysconfdir}/udhcpc.d ${datadir}/udhcpc"
@@ -233,6 +233,7 @@ do_install () {
         if grep -q "CONFIG_SYSLOGD=y" ${B}/.config; then
                 install -m 0755 ${WORKDIR}/syslog ${D}${sysconfdir}/init.d/syslog.${BPN}
                 install -m 644 ${WORKDIR}/syslog-startup.conf ${D}${sysconfdir}/syslog-startup.conf.${BPN}
+                install -m 644 ${WORKDIR}/syslog.conf ${D}${sysconfdir}/syslog.conf.${BPN}
         fi
         if grep "CONFIG_CROND=y" ${B}/.config; then
                 install -m 0755 ${WORKDIR}/busybox-cron ${D}${sysconfdir}/init.d/
@@ -290,6 +291,9 @@ inherit update-alternatives
 
 ALTERNATIVE_PRIORITY = "50"
 
+ALTERNATIVE_${PN}-syslog += "syslog-conf"
+ALTERNATIVE_LINK_NAME[syslog-conf] = "${sysconfdir}/syslog.conf"
+
 python () {
     if 'sysvinit' in d.getVar("DISTRO_FEATURES", True).split():
         pn = d.getVar('PN', True)
diff --git a/meta/recipes-core/busybox/busybox_1.21.1.bb b/meta/recipes-core/busybox/busybox_1.21.1.bb
index 784c924d50..f766beec03 100644
--- a/meta/recipes-core/busybox/busybox_1.21.1.bb
+++ b/meta/recipes-core/busybox/busybox_1.21.1.bb
@@ -17,6 +17,7 @@ SRC_URI = "http://www.busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
            file://mount.busybox \
            file://syslog \
            file://syslog-startup.conf \
+           file://syslog.conf \
            file://busybox-syslog.default \
            file://mdev \
            file://mdev.conf \
diff --git a/meta/recipes-core/busybox/files/syslog.conf b/meta/recipes-core/busybox/files/syslog.conf
new file mode 100644
index 0000000000..75bb6309ab
--- /dev/null
+++ b/meta/recipes-core/busybox/files/syslog.conf
@@ -0,0 +1 @@
+#  /etc/syslog.conf     Configuration file for busybox's syslogd utility