accomodate a read only rootfs

1 files changed, 10 insertions, 0 deletions

diff --git a/target/generic/target_skeleton/etc/init.d/S20urandom b/target/generic/target_skeleton/etc/init.d/S20urandom
index 433fafee4..f73cea59e 100755
--- a/target/generic/target_skeleton/etc/init.d/S20urandom
+++ b/target/generic/target_skeleton/etc/init.d/S20urandom
@@ -21,6 +21,12 @@ case "$1" in
 		then
 			cat /etc/random-seed >/dev/urandom
 		fi
+		# check for read only file system
+		if ! touch /etc/random-seed 2>/dev/null
+		then
+			echo "read-only file system detected...done"
+			exit
+		fi
 		rm -f /etc/random-seed
 		umask 077
 		dd if=/dev/urandom of=/etc/random-seed count=1 \
@@ -29,6 +35,10 @@ case "$1" in
 		[ "$VERBOSE" != no ] && echo "done."
 		;;
 	stop)
+		if ! touch /etc/random-seed 2>/dev/null
+                then
+                        exit
+                fi
 		# Carry a random seed from shut-down to start-up;
 		# see documentation in linux/drivers/char/random.c
 		[ "$VERBOSE" != no ] && echo -n "Saving random seed... "