From 1389c74f95c8de5121b4423cea789de42cd6325c Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@tele2.at>
Date: Sat, 21 Apr 2018 19:39:48 +0200
Subject: [PATCH] Add pygos specific init setup to init package

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
---
 pkg/init/build                       |  2 +-
 pkg/init/etc/init.d/mountusr         |  1 +
 pkg/init/etc/init.d/tmpfsrun         |  1 +
 pkg/init/etc/init.d/tmpfsvar         |  1 +
 pkg/init/etc/initd.env               |  1 +
 pkg/init/lib/libexec/init/overlay.sh | 21 +++++++++++++++++++++
 pkg/init/share/init/mountusr         |  5 +++++
 pkg/init/share/init/tmpfsrun         | 11 +++++++++++
 pkg/init/share/init/tmpfsvar         | 12 ++++++++++++
 9 files changed, 54 insertions(+), 1 deletion(-)
 create mode 120000 pkg/init/etc/init.d/mountusr
 create mode 120000 pkg/init/etc/init.d/tmpfsrun
 create mode 120000 pkg/init/etc/init.d/tmpfsvar
 create mode 100644 pkg/init/etc/initd.env
 create mode 100755 pkg/init/lib/libexec/init/overlay.sh
 create mode 100644 pkg/init/share/init/mountusr
 create mode 100644 pkg/init/share/init/tmpfsrun
 create mode 100644 pkg/init/share/init/tmpfsvar

diff --git a/pkg/init/build b/pkg/init/build
index 59207b0..8b695d1 100755
--- a/pkg/init/build
+++ b/pkg/init/build
@@ -26,7 +26,7 @@ deploy() {
 
 	make DESTDIR="$DEPLOY" install-strip
 
-	mkdir -p "$DEPLOY/etc/init.d"
+	cp -r ${SCRIPTDIR}/pkg/${PKGNAME}/{etc,lib,share} "$DEPLOY"
 
 	if [ -e "$SCRIPTDIR/board/$BOARD/INIT" ]; then
 		source "$SCRIPTDIR/board/$BOARD/INIT"
diff --git a/pkg/init/etc/init.d/mountusr b/pkg/init/etc/init.d/mountusr
new file mode 120000
index 0000000..33d4846
--- /dev/null
+++ b/pkg/init/etc/init.d/mountusr
@@ -0,0 +1 @@
+/share/init/mountusr
\ No newline at end of file
diff --git a/pkg/init/etc/init.d/tmpfsrun b/pkg/init/etc/init.d/tmpfsrun
new file mode 120000
index 0000000..3c4d418
--- /dev/null
+++ b/pkg/init/etc/init.d/tmpfsrun
@@ -0,0 +1 @@
+/share/init/tmpfsrun
\ No newline at end of file
diff --git a/pkg/init/etc/init.d/tmpfsvar b/pkg/init/etc/init.d/tmpfsvar
new file mode 120000
index 0000000..76fe5d9
--- /dev/null
+++ b/pkg/init/etc/init.d/tmpfsvar
@@ -0,0 +1 @@
+/share/init/tmpfsvar
\ No newline at end of file
diff --git a/pkg/init/etc/initd.env b/pkg/init/etc/initd.env
new file mode 100644
index 0000000..c31cb70
--- /dev/null
+++ b/pkg/init/etc/initd.env
@@ -0,0 +1 @@
+PATH=/bin
\ No newline at end of file
diff --git a/pkg/init/lib/libexec/init/overlay.sh b/pkg/init/lib/libexec/init/overlay.sh
new file mode 100755
index 0000000..090671c
--- /dev/null
+++ b/pkg/init/lib/libexec/init/overlay.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+lower=/cfg/preserve/${1}
+upper=/cfg/overlay/${1}
+work=/cfg/overlay/${1}_work
+target=${2}
+
+if [ ! -d "$target" ]; then
+	exit
+fi
+
+if [ -d "$lower" ]; then
+	if [ -d "$upper" ]; then
+		mkdir -p "$work"
+		mount -t overlay overlay \
+			-olowerdir=${lower},upperdir=${upper},workdir=${work} \
+			${target}
+	else
+		mount --bind "$lower" "$target"
+	fi
+fi
diff --git a/pkg/init/share/init/mountusr b/pkg/init/share/init/mountusr
new file mode 100644
index 0000000..5c0c676
--- /dev/null
+++ b/pkg/init/share/init/mountusr
@@ -0,0 +1,5 @@
+description "mount /usr"
+type wait
+target boot
+before vfs
+exec /lib/libexec/init/overlay.sh usr /usr
diff --git a/pkg/init/share/init/tmpfsrun b/pkg/init/share/init/tmpfsrun
new file mode 100644
index 0000000..07dbd0a
--- /dev/null
+++ b/pkg/init/share/init/tmpfsrun
@@ -0,0 +1,11 @@
+description "mount /run"
+type wait
+target boot
+before vfs
+after tmpfsvar
+exec {
+	mount -t tmpfs none /run
+	mkdir /run/lock -m 0755
+	ln -s /run /var/run
+	ln -s /run/lock /var/lock
+}
diff --git a/pkg/init/share/init/tmpfsvar b/pkg/init/share/init/tmpfsvar
new file mode 100644
index 0000000..219c81c
--- /dev/null
+++ b/pkg/init/share/init/tmpfsvar
@@ -0,0 +1,12 @@
+description "mount /var"
+type wait
+target boot
+before vfs
+exec {
+	mount -t tmpfs none /var
+	mkdir /var/log -m 0755
+	mkdir /var/spool -m 0755
+	mkdir /var/lib -m 0755
+	mkdir /var/tmp -m 0755
+	/lib/libexec/init/overlay.sh var_lib /var/lib
+}