Subject: init.d: add support for read-only rootfs
|
|
Upstream-Status: Inappropriate [oe specific]
|
|
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
|
---
|
init.d | 40 ++++++++++++++++++++++++++++++++++++++++
|
1 file changed, 40 insertions(+)
|
|
diff --git a/init.d b/init.d
|
index 0111ed4..24677c8 100644
|
--- a/init.d
|
+++ b/init.d
|
@@ -6,8 +6,48 @@ PATH=/sbin:/bin:/usr/sbin:/usr/bin
|
# Don't modify this line, change or create /etc/default/bind9.
|
OPTIONS=""
|
|
+test -f /etc/default/rcS && . /etc/default/rcS
|
test -f /etc/default/bind9 && . /etc/default/bind9
|
|
+# This function is here because it's possible that /var and / are on different partitions.
|
+is_on_read_only_partition () {
|
+ DIRECTORY=$1
|
+ dir=`readlink -f $DIRECTORY`
|
+ while true; do
|
+ if [ ! -d "$dir" ]; then
|
+ echo "ERROR: $dir is not a directory"
|
+ exit 1
|
+ else
|
+ for flag in `awk -v dir=$dir '{ if ($2 == dir) { print "FOUND"; split($4,FLAGS,",") } }; \
|
+ END { for (f in FLAGS) print FLAGS[f] }' < /proc/mounts`; do
|
+ [ "$flag" = "FOUND" ] && partition="read-write"
|
+ [ "$flag" = "ro" ] && { partition="read-only"; break; }
|
+ done
|
+ if [ "$dir" = "/" -o -n "$partition" ]; then
|
+ break
|
+ else
|
+ dir=`dirname $dir`
|
+ fi
|
+ fi
|
+ done
|
+ [ "$partition" = "read-only" ] && echo "yes" || echo "no"
|
+}
|
+
|
+bind_mount () {
|
+ olddir=$1
|
+ newdir=$2
|
+ mkdir -p $olddir
|
+ cp -a $newdir/* $olddir
|
+ mount --bind $olddir $newdir
|
+}
|
+
|
+# Deal with read-only rootfs
|
+if [ "$ROOTFS_READ_ONLY" = "yes" ]; then
|
+ [ "$VERBOSE" != "no" ] && echo "WARN: start bind service in read-only rootfs"
|
+ [ `is_on_read_only_partition /etc/bind` = "yes" ] && bind_mount /var/volatile/bind/etc /etc/bind
|
+ [ `is_on_read_only_partition /var/named` = "yes" ] && bind_mount /var/volatile/bind/named /var/named
|
+fi
|
+
|
test -x /usr/sbin/rndc || exit 0
|
|
case "$1" in
|
--
|
1.7.9.5
|
