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-rwxr-xr-xscripts/contrib/ddimage104
1 files changed, 104 insertions, 0 deletions
diff --git a/scripts/contrib/ddimage b/scripts/contrib/ddimage
new file mode 100755
index 0000000..a503f11
--- /dev/null
+++ b/scripts/contrib/ddimage
@@ -0,0 +1,104 @@
+#!/bin/sh
+
+# Default to avoiding the first two disks on typical Linux and Mac OS installs
+# Better safe than sorry :-)
+BLACKLIST_DEVICES="/dev/sda /dev/sdb /dev/disk1 /dev/disk2"
+
+# 1MB blocksize
+BLOCKSIZE=1048576
+
+usage() {
+ echo "Usage: $(basename $0) IMAGE DEVICE"
+}
+
+image_details() {
+ IMG=$1
+ echo "Image details"
+ echo "============="
+ echo " image: $(basename $IMG)"
+ # stat format is different on Mac OS and Linux
+ if [ "$(uname)" = "Darwin" ]; then
+ echo " size: $(stat -L -f '%z bytes' $IMG)"
+ echo " modified: $(stat -L -f '%Sm' $IMG)"
+ else
+ echo " size: $(stat -L -c '%s bytes' $IMG)"
+ echo " modified: $(stat -L -c '%y' $IMG)"
+ fi
+ echo " type: $(file -L -b $IMG)"
+ echo ""
+}
+
+device_details() {
+ DEV=$1
+ BLOCK_SIZE=512
+
+ echo "Device details"
+ echo "=============="
+
+ # Collect disk info using diskutil on Mac OS
+ if [ "$(uname)" = "Darwin" ]; then
+ diskutil info $DEVICE | egrep "(Device Node|Media Name|Total Size)"
+ return
+ fi
+
+ # Default / Linux information collection
+ echo " device: $DEVICE"
+ if [ -f "/sys/class/block/$DEV/device/vendor" ]; then
+ echo " vendor: $(cat /sys/class/block/$DEV/device/vendor)"
+ else
+ echo " vendor: UNKOWN"
+ fi
+ if [ -f "/sys/class/block/$DEV/device/model" ]; then
+ echo " model: $(cat /sys/class/block/$DEV/device/model)"
+ else
+ echo " model: UNKNOWN"
+ fi
+ if [ -f "/sys/class/block/$DEV/size" ]; then
+ echo " size: $(($(cat /sys/class/block/$DEV/size) * $BLOCK_SIZE)) bytes"
+ else
+ echo " size: UNKNOWN"
+ fi
+ echo ""
+}
+
+if [ $# -ne 2 ]; then
+ usage
+ exit 1
+fi
+
+IMAGE=$1
+DEVICE=$2
+
+if [ ! -e "$IMAGE" ]; then
+ echo "ERROR: Image $IMAGE does not exist"
+ usage
+ exit 1
+fi
+
+
+for i in ${BLACKLIST_DEVICES}; do
+ if [ "$i" = "$DEVICE" ]; then
+ echo "ERROR: Device $DEVICE is blacklisted"
+ exit 1
+ fi
+done
+
+if [ ! -w "$DEVICE" ]; then
+ echo "ERROR: Device $DEVICE does not exist or is not writable"
+ usage
+ exit 1
+fi
+
+image_details $IMAGE
+device_details $(basename $DEVICE)
+
+printf "Write $IMAGE to $DEVICE [y/N]? "
+read RESPONSE
+if [ "$RESPONSE" != "y" ]; then
+ echo "Write aborted"
+ exit 0
+fi
+
+echo "Writing image..."
+dd if="$IMAGE" of="$DEVICE" bs="$BLOCKSIZE"
+sync