19c6c2e191
Update the ddimage script to allow it to work on Mac OS too. The biggest difference is sysfs vs diskutil and in the syntax of the stat command between Mac OS and Linux, unfortunately. Workarounds using ls, cut, and columns got really fragile really quickly. Relying on stat and switching on uname seemed the more robust solution. (From OE-Core rev: 8962fe11a0697348affb8a1ab95abca4995470a6) Signed-off-by: Darren Hart <dvhart@linux.intel.com> Cc: Koen Kooi <koen@dominion.thruhere.net> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
105 lines
2.1 KiB
Bash
Executable file
105 lines
2.1 KiB
Bash
Executable file
#!/bin/sh
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# Default to avoiding the first two disks on typical Linux and Mac OS installs
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# Better safe than sorry :-)
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BLACKLIST_DEVICES="/dev/sda /dev/sdb /dev/disk1 /dev/disk2"
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# 1MB blocksize
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BLOCKSIZE=1048576
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usage() {
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echo "Usage: $(basename $0) IMAGE DEVICE"
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}
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image_details() {
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IMG=$1
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echo "Image details"
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echo "============="
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echo " image: $(basename $IMG)"
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# stat format is different on Mac OS and Linux
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if [ "$(uname)" = "Darwin" ]; then
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echo " size: $(stat -L -f '%z bytes' $IMG)"
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echo " modified: $(stat -L -f '%Sm' $IMG)"
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else
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echo " size: $(stat -L -c '%s bytes' $IMG)"
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echo " modified: $(stat -L -c '%y' $IMG)"
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fi
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echo " type: $(file -L -b $IMG)"
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echo ""
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}
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device_details() {
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DEV=$1
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BLOCK_SIZE=512
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echo "Device details"
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echo "=============="
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# Collect disk info using diskutil on Mac OS
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if [ "$(uname)" = "Darwin" ]; then
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diskutil info $DEVICE | egrep "(Device Node|Media Name|Total Size)"
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return
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fi
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# Default / Linux information collection
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echo " device: $DEVICE"
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if [ -f "/sys/class/block/$DEV/device/vendor" ]; then
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echo " vendor: $(cat /sys/class/block/$DEV/device/vendor)"
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else
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echo " vendor: UNKOWN"
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fi
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if [ -f "/sys/class/block/$DEV/device/model" ]; then
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echo " model: $(cat /sys/class/block/$DEV/device/model)"
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else
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echo " model: UNKNOWN"
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fi
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if [ -f "/sys/class/block/$DEV/size" ]; then
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echo " size: $(($(cat /sys/class/block/$DEV/size) * $BLOCK_SIZE)) bytes"
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else
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echo " size: UNKNOWN"
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fi
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echo ""
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}
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if [ $# -ne 2 ]; then
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usage
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exit 1
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fi
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IMAGE=$1
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DEVICE=$2
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if [ ! -e "$IMAGE" ]; then
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echo "ERROR: Image $IMAGE does not exist"
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usage
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exit 1
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fi
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for i in ${BLACKLIST_DEVICES}; do
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if [ "$i" = "$DEVICE" ]; then
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echo "ERROR: Device $DEVICE is blacklisted"
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exit 1
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fi
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done
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if [ ! -w "$DEVICE" ]; then
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echo "ERROR: Device $DEVICE does not exist or is not writable"
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usage
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exit 1
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fi
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image_details $IMAGE
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device_details $(basename $DEVICE)
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printf "Write $IMAGE to $DEVICE [y/N]? "
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read RESPONSE
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if [ "$RESPONSE" != "y" ]; then
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echo "Write aborted"
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exit 0
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fi
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echo "Writing image..."
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dd if="$IMAGE" of="$DEVICE" bs="$BLOCKSIZE"
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sync
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