defaultsetup.conf: enable select init manager

Introduce a new variable INIT_MANAGER and create 4 init-manager-*.inc
files to configure init manager settings. Available values of
INIT_MANAGER are sysvinit, systemd, mdev-busybox and a default of none.
'none' provides backwards compatibility.

The settings of various VIRTUAL-RUNTIME variables are moved into these
files from the packagegroups.

[YOCTO #13031]

[Modifications by RP for backwards compatibility]

(From OE-Core rev: 8d0b4704a526a48cd5e67df61b613424bbbdccde)

Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

7 files changed, 25 insertions, 6 deletions

diff --git a/meta/conf/distro/defaultsetup.conf b/meta/conf/distro/defaultsetup.conf
index 20e61232e9..9b1ee20aaa 100644
--- a/meta/conf/distro/defaultsetup.conf
+++ b/meta/conf/distro/defaultsetup.conf
@@ -23,3 +23,6 @@ PACKAGE_CLASSES ?= "package_ipk"
 INHERIT_BLACKLIST = "blacklist"
 INHERIT_DISTRO ?= "debian devshell sstate license remove-libtool"
 INHERIT += "${PACKAGE_CLASSES} ${USER_CLASSES} ${INHERIT_DISTRO} ${INHERIT_BLACKLIST}"
+
+INIT_MANAGER ??= "none"
+require conf/distro/include/init-manager-${INIT_MANAGER}.inc
diff --git a/meta/conf/distro/include/init-manager-mdev-busybox.inc b/meta/conf/distro/include/init-manager-mdev-busybox.inc
new file mode 100644
index 0000000000..4e3be14a82
--- /dev/null
+++ b/meta/conf/distro/include/init-manager-mdev-busybox.inc
@@ -0,0 +1,7 @@
+# enable mdev/busybox for init
+DISTRO_FEATURES_BACKFILL_CONSIDERED_append = " systemd sysvinit"
+VIRTUAL-RUNTIME_dev_manager ??= "busybox-mdev"
+VIRTUAL-RUNTIME_init_manager ??= "busybox"
+VIRTUAL-RUNTIME_initscripts ??= "initscripts"
+VIRTUAL-RUNTIME_keymaps ??= "keymaps"
+VIRTUAL-RUNTIME_login_manager ??= "busybox"
diff --git a/meta/conf/distro/include/init-manager-none.inc b/meta/conf/distro/include/init-manager-none.inc
new file mode 100644
index 0000000000..bbedf898f7
--- /dev/null
+++ b/meta/conf/distro/include/init-manager-none.inc
@@ -0,0 +1,3 @@
+VIRTUAL-RUNTIME_init_manager ??= "sysvinit"
+VIRTUAL-RUNTIME_initscripts ??= "initscripts"
+VIRTUAL-RUNTIME_login_manager ??= "busybox"
diff --git a/meta/conf/distro/include/init-manager-systemd.inc b/meta/conf/distro/include/init-manager-systemd.inc
new file mode 100644
index 0000000000..1558b85250
--- /dev/null
+++ b/meta/conf/distro/include/init-manager-systemd.inc
@@ -0,0 +1,6 @@
+# Use systemd for system initialization
+DISTRO_FEATURES_append = " systemd"
+DISTRO_FEATURES_BACKFILL_CONSIDERED_append = " sysvinit"
+VIRTUAL-RUNTIME_init_manager ??= "systemd"
+VIRTUAL-RUNTIME_initscripts ??= "systemd-compat-units"
+VIRTUAL-RUNTIME_login_manager ??= "shadow-base"
diff --git a/meta/conf/distro/include/init-manager-sysvinit.inc b/meta/conf/distro/include/init-manager-sysvinit.inc
new file mode 100644
index 0000000000..6b662d60bb
--- /dev/null
+++ b/meta/conf/distro/include/init-manager-sysvinit.inc
@@ -0,0 +1,6 @@
+# Use sysvinit for system initialization
+DISTRO_FEATURES_append = " sysvinit"
+DISTRO_FEATURES_BACKFILL_CONSIDERED_append = " systemd"
+VIRTUAL-RUNTIME_init_manager ??= "sysvinit"
+VIRTUAL-RUNTIME_initscripts ??= "initscripts"
+VIRTUAL-RUNTIME_login_manager ??= "busybox"
diff --git a/meta/recipes-core/packagegroups/packagegroup-core-boot.bb b/meta/recipes-core/packagegroups/packagegroup-core-boot.bb
index 8dc445dc8f..3a2f50febb 100644
--- a/meta/recipes-core/packagegroups/packagegroup-core-boot.bb
+++ b/meta/recipes-core/packagegroups/packagegroup-core-boot.bb
@@ -18,9 +18,6 @@ MACHINE_ESSENTIAL_EXTRA_RRECOMMENDS ?= ""
 
 # Distro can override the following VIRTUAL-RUNTIME providers:
 VIRTUAL-RUNTIME_dev_manager ?= "udev"
-VIRTUAL-RUNTIME_login_manager ?= "busybox"
-VIRTUAL-RUNTIME_init_manager ?= "sysvinit"
-VIRTUAL-RUNTIME_initscripts ?= "initscripts"
 VIRTUAL-RUNTIME_keymaps ?= "keymaps"
 
 EFI_PROVIDER ??= "grub-efi"
diff --git a/meta/recipes-extended/packagegroups/packagegroup-core-full-cmdline.bb b/meta/recipes-extended/packagegroups/packagegroup-core-full-cmdline.bb
index d38f545e06..2d96d1ba38 100644
--- a/meta/recipes-extended/packagegroups/packagegroup-core-full-cmdline.bb
+++ b/meta/recipes-extended/packagegroups/packagegroup-core-full-cmdline.bb
@@ -111,9 +111,6 @@ RDEPENDS_packagegroup-core-full-cmdline-dev-utils = "\
     patch \
     "
 
-VIRTUAL-RUNTIME_initscripts ?= "initscripts"
-VIRTUAL-RUNTIME_init_manager ?= "sysvinit"
-VIRTUAL-RUNTIME_login_manager ?= "busybox"
 VIRTUAL-RUNTIME_syslog ?= "sysklogd"
 RDEPENDS_packagegroup-core-full-cmdline-initscripts = "\
     ${VIRTUAL-RUNTIME_initscripts} \