[Buildroot] [RFC] initscripts: new package

[Maxime Hadjinlian]

The folder init.d is currently installed by default since it's part of
our skeleton.
This patch creates a package out of it and busybox/sysvinit depends on
it.

This way, if you chose another init (currently systemd), you don't end up
with a useless init.d folder.

Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian at gmail.com>
Cc: Eric Le Bihan <eric.le.bihan.dev at free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Cc: Maxime Ripard <maxime.ripard at free-electrons.com>
Cc: Jerome Pouiller <jezz at sysmic.org>
---
This is marked as RFC as an email from Eric Le Bihan on the list started an
argument about the lack of a default init skeleton.
This patchs lacks at least a good reworking of the documentation on the subject.

As always, ideas and comments are welcomed !
---
 package/busybox/busybox.mk                         |  4 ++++
 .../inittab => package/initscripts/busybox_inittab |  0
 .../etc => package/initscripts}/init.d/S20urandom  |  0
 .../etc => package/initscripts}/init.d/S40network  |  0
 .../etc => package/initscripts}/init.d/rcK         |  0
 .../etc => package/initscripts}/init.d/rcS         |  0
 package/initscripts/initscripts.mk                 | 28 ++++++++++++++++++++++
 .../inittab => initscripts/sysvinit_inittab}       |  0
 package/sysvinit/sysvinit.mk                       |  9 +++----
 9 files changed, 37 insertions(+), 4 deletions(-)
 rename system/skeleton/etc/inittab => package/initscripts/busybox_inittab (100%)
 rename {system/skeleton/etc => package/initscripts}/init.d/S20urandom (100%)
 rename {system/skeleton/etc => package/initscripts}/init.d/S40network (100%)
 rename {system/skeleton/etc => package/initscripts}/init.d/rcK (100%)
 rename {system/skeleton/etc => package/initscripts}/init.d/rcS (100%)
 create mode 100644 package/initscripts/initscripts.mk
 rename package/{sysvinit/inittab => initscripts/sysvinit_inittab} (100%)

diff --git a/package/busybox/busybox.mk b/package/busybox/busybox.mk
index 150100b..c7b86a2 100644
--- a/package/busybox/busybox.mk
+++ b/package/busybox/busybox.mk
@@ -21,6 +21,10 @@ BUSYBOX_CFLAGS = \
 BUSYBOX_LDFLAGS = \
 	$(TARGET_LDFLAGS)

+# initscripts contains/install only inittab and the init.d folder with base
+# scripts.
+BUSYBOX_DEPENDENCIES = initscripts
+
 # Link against libtirpc if available so that we can leverage its RPC
 # support for NFS mounting with Busybox
 ifeq ($(BR2_PACKAGE_LIBTIRPC),y)
diff --git a/system/skeleton/etc/inittab b/package/initscripts/busybox_inittab
similarity index 100%
rename from system/skeleton/etc/inittab
rename to package/initscripts/busybox_inittab
diff --git a/system/skeleton/etc/init.d/S20urandom b/package/initscripts/init.d/S20urandom
similarity index 100%
rename from system/skeleton/etc/init.d/S20urandom
rename to package/initscripts/init.d/S20urandom
diff --git a/system/skeleton/etc/init.d/S40network b/package/initscripts/init.d/S40network
similarity index 100%
rename from system/skeleton/etc/init.d/S40network
rename to package/initscripts/init.d/S40network
diff --git a/system/skeleton/etc/init.d/rcK b/package/initscripts/init.d/rcK
similarity index 100%
rename from system/skeleton/etc/init.d/rcK
rename to package/initscripts/init.d/rcK
diff --git a/system/skeleton/etc/init.d/rcS b/package/initscripts/init.d/rcS
similarity index 100%
rename from system/skeleton/etc/init.d/rcS
rename to package/initscripts/init.d/rcS
diff --git a/package/initscripts/initscripts.mk b/package/initscripts/initscripts.mk
new file mode 100644
index 0000000..13affe8
--- /dev/null
+++ b/package/initscripts/initscripts.mk
@@ -0,0 +1,28 @@
+################################################################################
+#
+# initscripts
+#
+################################################################################
+
+# source included in buildroot
+INITSCRIPTS_SOURCE =
+
+# Note: We need to override Busybox's inittab with an inittab compatible with
+# sysvinit if we want SYSVINIT as our init.
+ifeq ($(BR2_PACKAGE_SYSVINIT),y)
+define INITSCRIPTS_INSTALL_INITTAB
+	$(INSTALL) -D -m 0644 package/initscripts/sysvinit_inittab $(TARGET_DIR)/etc/inittab
+endef
+else
+define INITSCRIPTS_INSTALL_INITTAB
+	$(INSTALL) -D -m 0644 package/initscripts/busybox_inittab $(TARGET_DIR)/etc/inittab
+endef
+endif
+
+define INITSCRIPTS_INSTALL_TARGET_CMDS
+	mkdir -p  $(TARGET_DIR)/etc/init.d
+	$(INSTALL) -D -m 0755 package/initscripts/init.d/* $(TARGET_DIR)/etc/init.d/
+	$(INITSCRIPTS_INSTALL_INITTAB)
+endef
+
+$(eval $(generic-package))
diff --git a/package/sysvinit/inittab b/package/initscripts/sysvinit_inittab
similarity index 100%
rename from package/sysvinit/inittab
rename to package/initscripts/sysvinit_inittab
diff --git a/package/sysvinit/sysvinit.mk b/package/sysvinit/sysvinit.mk
index 5d4f4bc..4a2d829 100644
--- a/package/sysvinit/sysvinit.mk
+++ b/package/sysvinit/sysvinit.mk
@@ -11,9 +11,13 @@ SYSVINIT_SITE    = $(BR2_DEBIAN_MIRROR)/debian/pool/main/s/sysvinit
 SYSVINIT_LICENSE = GPLv2+
 SYSVINIT_LICENSE_FILES = COPYING

+# initscripts contains/install only inittab and the init.d folder with base
+# scripts.
+SYSVINIT_DEPENDENCIES = initscripts
+
 # Override Busybox implementations if Busybox is enabled.
 ifeq ($(BR2_PACKAGE_BUSYBOX),y)
-SYSVINIT_DEPENDENCIES = busybox
+SYSVINIT_DEPENDENCIES += busybox
 endif

 define SYSVINIT_DEBIAN_PATCHES
@@ -34,9 +38,6 @@ define SYSVINIT_INSTALL_TARGET_CMDS
 	for x in halt init shutdown killall5; do \
 		install -D -m 0755 $(@D)/src/$$x $(TARGET_DIR)/sbin/$$x || exit 1; \
 	done
-	# Override Busybox's inittab with an inittab compatible with
-	# sysvinit
-	install -D -m 0644 package/sysvinit/inittab $(TARGET_DIR)/etc/inittab
 	ln -sf /sbin/halt $(TARGET_DIR)/sbin/reboot
 	ln -sf /sbin/halt $(TARGET_DIR)/sbin/poweroff
 	ln -sf killall5 $(TARGET_DIR)/sbin/pidof
--
2.0.0.rc2