1 files changed, 73 insertions, 0 deletions
diff --git a/dung-3.4.25-m2/common/write-dd.sh b/dung-3.4.25-m2/common/write-dd.sh
new file mode 100755
index 0000000..0299819
--- /dev/null
+++ b/dung-3.4.25-m2/common/write-dd.sh
@@ -0,0 +1,73 @@
+#!/bin/sh
+# write-dev.sh
+#
+# Simple dd-based write test
+# 
+# Copyright (C) 2013 Horms Soltutions Ltd.
+#
+# Contact: Simon Horman <horms@verge.net.au>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+
+set -e
+#set -x
+
+if [ $# -ne 3 ]; then
+	echo "usage: $(basename $0) PATH BLOCK_SIZE BLOCK_COUNT" >& 2
+	exit 1
+fi
+
+DEV="$1"
+BLOCK_SIZE="$2"
+BLOCK_COUNT="$3"
+
+echo "write test for $DEV (bs=$BLOCK_SIZE count=$BLOCK_COUNT)"
+
+echo "Test that device exists"
+if [ ! -e "$DEV" ]; then
+	echo \'$DEV\': No such file or directory >&2
+	exit 1
+fi
+
+IN=""
+OUT=""
+cleanup ()
+{
+    [ -n "$IN" -a -f "$IN" ] && rm "$IN"
+    [ -n "$OUT" -a -f "$OUT" ] && rm "$OUT"
+}
+trap cleanup exit
+IN=$(mktemp)
+OUT=$(mktemp)
+
+echo "Write random data to test file"
+dd if=/dev/urandom of="$IN" bs="$BLOCK_SIZE" count="$BLOCK_COUNT"
+
+echo "Write test data to device"
+
+dd if="$IN" of="$DEV" oflag=direct bs="$BLOCK_SIZE" count="$BLOCK_COUNT"
+
+echo "Read test data from device"
+dd if="$DEV" of="$OUT" bs="$BLOCK_SIZE" count="$BLOCK_COUNT"
+
+IN_SUM=$(sha256sum "$IN" | cut -f 1 -d ' ')
+OUT_SUM=$(sha256sum "$OUT" | cut -f 1 -d ' ')
+
+IN_SIZE=$(wc -c "$IN" | cut -f 1 -d ' ')
+OUT_SIZE=$(wc -c "$OUT" | cut -f 1 -d ' ')
+
+echo "Compare data writen to data read"
+if [ "$IN_SUM" != "$OUT_SUM" ]; then
+	echo "Data read does not match data written" >&2
+	echo "Size (bytes):" >&2
+	echo "    in:  $IN_SIZE" >&2
+	echo "    out: $OUT_SIZE" >&2
+	echo "SHA 256 Checksums:" >&2
+	echo "    in:  $IN_SUM" >&2
+	echo "    out: $OUT_SUM" >&2
+	exit 1
+fi
+
+echo "Test passed"