recipes-multimedia: lightmediascanner: switch from user dbus session to system

To avoid multiple instances of lightmediascanner from being created
it should run only once in the system dbus session.

Bug-AGL: SPEC-2655
Change-Id: I6c9510926f82ec9eb5625d63d08998a145504227
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>

4 files changed, 69 insertions, 15 deletions

diff --git a/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/0002-switch-from-G_BUS_TYPE_SESSION-to-G_BUS_TYPE_SYSTEM.patch b/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/0002-switch-from-G_BUS_TYPE_SESSION-to-G_BUS_TYPE_SYSTEM.patch
new file mode 100644
index 000000000..5abb980b8
--- /dev/null
+++ b/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/0002-switch-from-G_BUS_TYPE_SESSION-to-G_BUS_TYPE_SYSTEM.patch
@@ -0,0 +1,49 @@
+From 5a618b444e424483c3a9d34dd9b196796cac8e3f Mon Sep 17 00:00:00 2001
+From: Matt Ranostay <matt.ranostay@konsulko.com>
+Date: Mon, 22 Jul 2019 13:29:52 -0700
+Subject: [PATCH] switch from G_BUS_TYPE_SESSION to G_BUS_TYPE_SYSTEM
+
+Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
+---
+ src/bin/lightmediascannerctl.c | 4 ++--
+ src/bin/lightmediascannerd.c   | 2 +-
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/src/bin/lightmediascannerctl.c b/src/bin/lightmediascannerctl.c
+index 5764bc0..1d4d844 100644
+--- a/src/bin/lightmediascannerctl.c
++++ b/src/bin/lightmediascannerctl.c
+@@ -11,7 +11,7 @@ start_service_by_name(void)
+     GVariant *var;
+     GDBusConnection *conn;
+ 
+-    conn = g_bus_get_sync(G_BUS_TYPE_SESSION, NULL, &error);
++    conn = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, &error);
+     if (error) {
+         fprintf(stderr, "Could not get session bus connection: %s\n",
+                 error->message);
+@@ -526,7 +526,7 @@ main(int argc, char *argv[])
+ 
+     app.timer = NULL;
+     app.loop = g_main_loop_new(NULL, FALSE);
+-    app.proxy = g_dbus_proxy_new_for_bus_sync(G_BUS_TYPE_SESSION,
++    app.proxy = g_dbus_proxy_new_for_bus_sync(G_BUS_TYPE_SYSTEM,
+                                               G_DBUS_PROXY_FLAGS_NONE,
+                                               NULL,
+                                               "org.lightmediascanner",
+diff --git a/src/bin/lightmediascannerd.c b/src/bin/lightmediascannerd.c
+index 319db42..6db81cc 100644
+--- a/src/bin/lightmediascannerd.c
++++ b/src/bin/lightmediascannerd.c
+@@ -1721,7 +1721,7 @@ main(int argc, char *argv[])
+     introspection_data = g_dbus_node_info_new_for_xml(introspection_xml, NULL);
+     g_assert(introspection_xml != NULL);
+ 
+-    id = g_bus_own_name(G_BUS_TYPE_SESSION, "org.lightmediascanner",
++    id = g_bus_own_name(G_BUS_TYPE_SYSTEM, "org.lightmediascanner",
+                         G_BUS_NAME_OWNER_FLAGS_NONE,
+                         NULL, on_name_acquired, NULL, NULL, NULL);
+ 
+-- 
+2.20.1
+
diff --git a/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/dbus-lightmediascanner.conf b/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/dbus-lightmediascanner.conf
index 9cb321ba9..8a9e35b09 100644
--- a/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/dbus-lightmediascanner.conf
+++ b/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/dbus-lightmediascanner.conf
@@ -1,7 +1,12 @@
 <?xml version="1.0"?> <!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
 <busconfig>
-    <policy context="default">
+    <policy user="root">
+        <allow own="org.lightmediascanner"/>
         <allow send_destination="org.lightmediascanner"/>
         <allow receive_type="signal" receive_sender="org.lightmediascanner" receive_interface="org.freedesktop.DBus.Properties"/>
     </policy>
+
+    <policy at_console="true">
+        <allow send_destination="org.lightmediascanner"/>
+    </policy>
 </busconfig>
diff --git a/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/lightmediascanner.service b/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/lightmediascanner.service
index 3b8a6d361..b75e19e25 100644
--- a/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/lightmediascanner.service
+++ b/meta-agl-profile-core/recipes-multimedia/lightmediascanner/files/lightmediascanner.service
@@ -5,8 +5,9 @@ Description=Lightmediascanner (LMS)
 Type=dbus
 BusName=org.lightmediascanner
 UMask=0077
-ExecStart=/usr/bin/lightmediascannerd --startup-scan --db-path=/run/user/%U/usrshr/lightmediascannerd.db --directory=/media --directory=%h/Music --directory=%h/Videos
+SmackProcessLabel=User::App::agl-service-mediascanner
+ExecStart=/usr/bin/lightmediascannerd --startup-scan --db-path=/run/user/%U/usrshr/lightmediascannerd.db --directory=/media --directory=/home/0/Music --directory=/home/0/Videos
 
 [Install]
-WantedBy=default.target
+WantedBy=multi-user.target
 Alias=dbus-org.lightmediascanner.service
diff --git a/meta-agl-profile-core/recipes-multimedia/lightmediascanner/lightmediascanner_%.bbappend b/meta-agl-profile-core/recipes-multimedia/lightmediascanner/lightmediascanner_%.bbappend
index 7a1dd1a4e..b47b2796c 100644
--- a/meta-agl-profile-core/recipes-multimedia/lightmediascanner/lightmediascanner_%.bbappend
+++ b/meta-agl-profile-core/recipes-multimedia/lightmediascanner/lightmediascanner_%.bbappend
@@ -5,6 +5,7 @@ FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
 
 SRC_URI += "file://lightmediascanner.service \
             file://plugin-ogg-fix-chucksize-issue.patch \
+            file://0002-switch-from-G_BUS_TYPE_SESSION-to-G_BUS_TYPE_SYSTEM.patch \
             file://dbus-lightmediascanner.conf \
            "
 
@@ -12,28 +13,26 @@ CFLAGS_append = " -D_FILE_OFFSET_BITS=64"
 
 inherit systemd
 
+SYSTEMD_PACKAGES = "${PN}"
+SYSTEMD_SERVICE_${PN} = "lightmediascanner.service"
+SYSTEMD_AUTO_ENABLE_${PN} = "enable"
+
 do_install_append() {
        # Install LMS systemd service
        if ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'true', 'false', d)}; then
-              install -m 644 -p -D ${WORKDIR}/lightmediascanner.service ${D}${systemd_user_unitdir}/lightmediascanner.service
-
-              # Execute these manually on behalf of systemctl script (from systemd-systemctl-native.bb)
-              # because it does not support systemd's user mode.
-              mkdir -p ${D}/etc/systemd/user/default.target.wants/
-              ln -sf ${systemd_user_unitdir}/lightmediascanner.service ${D}/etc/systemd/user/dbus-org.lightmediascanner.service
-              ln -sf ${systemd_user_unitdir}/lightmediascanner.service ${D}/etc/systemd/user/default.target.wants/lightmediascanner.service
+              install -d ${D}${systemd_system_unitdir}
+              install -m 644 -p -D ${WORKDIR}/lightmediascanner.service ${D}${systemd_system_unitdir}/lightmediascanner.service
        fi
 
-       install -d ${D}/etc/dbus-1/session.d
-       install -m 0644 ${WORKDIR}/dbus-lightmediascanner.conf ${D}/etc/dbus-1/session.d/lightmediascanner.conf
+       install -d ${D}/etc/dbus-1/system.d
+       install -m 0644 ${WORKDIR}/dbus-lightmediascanner.conf ${D}/etc/dbus-1/system.d/org.lightmediascanner.conf
 }
 
 FILES_${PN} += " \
-    ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '${systemd_user_unitdir}/lightmediascanner.service', '', d)} \
+    ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '${systemd_system_unitdir}/lightmediascanner.service', '', d)} \
     "
 
-# for DEMO
-EXTRA_OECONF = "--enable-static"
+EXTRA_OECONF = "--enable-static --with-dbus-services=${datadir}/dbus-1/system-services"
 PACKAGECONFIG[mp4] = "--enable-mp4,--disable-mp4,libmp4v2"
 
 # add support MP3 because of the format of music files for AGL CES/ALS2017 Demo