From: wchang kim <wchang.kim@samsung.com>
Date: Thu, 3 Nov 2016 11:27:18 +0000 (+0900)
Subject: Description : Applying init.wrapper to init process.
X-Git-Tag: submit/tizen/20161129.011323~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=512fc76fbd4b4e1904cbdc5bcbaf1af753f450b3;p=platform%2Fadaptation%2Fsystem-plugin.git

Description : Applying init.wrapper to init process.

In order to apply RO filesystem for rootfs, we should mount /opt for rw region.
init.wrapper do this job.

Change-Id: I0f546486fa5729bbf4412f86500b0ed43a0ecb3f
Signed-off-by: Woochang Kim <wchang.kim@samsung.com>
---

diff --git a/packaging/system-plugin.spec b/packaging/system-plugin.spec
index 885fbea..2887f7a 100644
--- a/packaging/system-plugin.spec
+++ b/packaging/system-plugin.spec
@@ -105,6 +105,14 @@ BuildArch: noarch
 %description profile_ivi
 This package provides ivi specific system configuration files.
 
+%package init_wrapper
+Summary: Support init.wrapper booting.
+Requires: %{name} = %{version}-%{release}
+BuildArch: noarch
+
+%description init_wrapper
+This package provides init.wrapper and init symlink file for init wrapper booting.
+
 %prep
 %setup -q
 
@@ -185,6 +193,10 @@ install -m 644 units/offline-update.service %{buildroot}%{_unitdir}
 ln -s ../offline-update.service %{buildroot}%{_unitdir}/system-update.target.wants/offline-update.service
 ln -s %{_datadir}/upgrade %{buildroot}/system-update
 
+# init_wrapper
+mkdir -p %{buildroot}%{_sbindir}
+install -m 755 scripts/init.wrapper %{buildroot}%{_sbindir}
+
 %clean
 rm -rf %{buildroot}
 
@@ -312,3 +324,11 @@ echo 'RemainAfterExit=yes' >> /usr/lib/systemd/system/user\@.service
 %files profile_ivi
 %{_unitdir}/ivi-network.service
 %{_unitdir}/multi-user.target.wants/ivi-network.service
+
+
+%files init_wrapper
+%{_sbindir}/init.wrapper
+
+%posttrans init_wrapper
+rm -f /sbin/init
+ln -s /sbin/init.wrapper /sbin/init
diff --git a/scripts/init.wrapper b/scripts/init.wrapper
new file mode 100644
index 0000000..a2f9379
--- /dev/null
+++ b/scripts/init.wrapper
@@ -0,0 +1,45 @@
+#!/bin/sh
+
+PATH=/bin:/usr/bin:/sbin:/usr/sbin
+
+SYSTEM_MNT=/opt
+SYS_BLK_DIR=/sys/class/block
+
+/usr/bin/mount -t proc none /proc
+/usr/bin/mount -t sysfs none /sys
+
+DISK_LIST=`ls $SYS_BLK_DIR`
+
+for BLK_NAME in $DISK_LIST
+do
+lsblk -r -n -d --output LABEL,PARTLABEL /dev/$BLK_NAME | grep -qi "system-data"
+if [ $? = "0" ] 
+then
+SYSTEM_DISK=/dev/$BLK_NAME
+break
+fi
+done
+
+if [ "$SYSTEM_DISK" == "" ]
+then
+    echo "Warning : There is no system-data partition."
+else
+    /usr/bin/mount | grep "$SYSTEM_MNT " > /dev/null
+
+    if [ $? = "0" ]
+    then
+        /usr/bin/umount -l "$SYSTEM_MNT"
+    fi
+
+    /usr/bin/mount $SYSTEM_DISK $SYSTEM_MNT
+fi
+
+INIT=/usr/lib/systemd/systemd
+if [ $$ = 1 ]; then
+        [ "$INIT" ] && exec "$INIT" "$@"
+fi
+
+echo "======================================================================"
+echo "[/sbin/init] WARNING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
+echo "This Message should be never printed. ($INIT execution failure?)"
+echo "======================================================================"