init functions: added

Add shell library for init scripts.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>

git-svn-id: https://svn.pengutronix.de/svn/ptxdist/trunks/ptxdist-trunk@10662 33e552b5-05e3-0310-8538-816dae2090ed

1 files changed, 32 insertions, 0 deletions

diff --git a/generic/lib/init/initmethod-bbinit-functions.sh b/generic/lib/init/initmethod-bbinit-functions.sh
new file mode 100755
index 000000000..5e0b432a7
--- /dev/null
+++ b/generic/lib/init/initmethod-bbinit-functions.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+#
+# generic functions for bbinit
+#
+
+mount_root_rw() {
+
+    touch "/.root_is_rw" > /dev/null 2>&1 && return
+
+    echo -n "remounting root rw..."
+    mount / -o remount,rw > /dev/null 2>&1
+    if [ "$?" -ne "0" ]; then
+        echo "failed, aborting"
+        return 1
+    fi
+    echo "done"
+}
+
+mount_root_restore() {
+
+    rm "/.root_is_rw" > /dev/null 2>&1 && return
+
+    echo -n "remounting root ro..."
+    mount / -o remount,ro > /dev/null 2>&1
+    if [ "$?" -ne "0" ]; then
+        echo "failed, aborting"
+        return 1
+    fi
+    echo "done"
+}
+