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The 'flash.sh' script makes image flashing easy and hassle-free, both for compressed and uncompressed images. Signed-off-by: Ivan Nikolaenko <[email protected]> Co-authored-by: Valentin Kharin <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| # Copyright 2022-2024 TII (SSRC) and the Ghaf contributors | ||
| # SPDX-License-Identifier: Apache-2.0 | ||
| { | ||
| coreutils, | ||
| util-linux, | ||
| writeShellApplication, | ||
| zstd, | ||
| }: | ||
| writeShellApplication { | ||
| name = "flash-script"; | ||
| runtimeInputs = [ | ||
| coreutils | ||
| util-linux | ||
| zstd | ||
| ]; | ||
| text = builtins.readFile ./flash.sh; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| #!/usr/bin/env bash | ||
| # Copyright 2022-2024 TII (SSRC) and the Ghaf contributors | ||
| # SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| # Function to print usage and exit | ||
| print_usage() { | ||
| echo "Usage: $0 -d <disk> -i <imagefile>" | ||
| exit 1 | ||
| } | ||
|
|
||
| if [ "$EUID" -ne 0 ]; then | ||
| echo "Please run as root" | ||
| exit | ||
| fi | ||
|
|
||
| # Check the number of parameters | ||
| if [ "$#" -ne 4 ]; then | ||
| print_usage | ||
| fi | ||
|
|
||
| # Parse the parameters | ||
| while getopts "d:i:" opt; do | ||
| case $opt in | ||
| d) DEVICE="$OPTARG" ;; | ||
| i) FILENAME="$OPTARG" ;; | ||
| *) print_usage ;; | ||
| esac | ||
| done | ||
|
|
||
| # Check if disk and imagefile exist | ||
| if [ ! -e "$DEVICE" ]; then | ||
| echo "No such block device: ${DEVICE}" | ||
| exit 1 | ||
| fi | ||
|
|
||
| if [ ! -e "$FILENAME" ]; then | ||
| echo "No such file: ${FILENAME}" | ||
| exit 1 | ||
| fi | ||
|
|
||
| # Function to wipe any ZFS leftovers exising on the disk | ||
| wipe_filesystem () { | ||
| echo "Wiping filesystem..." | ||
| # Set sector size to 512 bytes | ||
| SECTOR=512 | ||
| # 10 MiB in 512-byte sectors | ||
| MIB_TO_SECTORS=20480 | ||
| # Disk size in 512-byte sectors | ||
| SECTORS=$(blockdev --getsz "$DEVICE") | ||
| # Unmount possible mounted filesystems | ||
| sync; umount -q "$DEVICE"* || true; | ||
| # Wipe first 10MiB of disk | ||
| dd if=/dev/zero of="$DEVICE" bs="$SECTOR" count="$MIB_TO_SECTORS" conv=fsync status=none | ||
| # Wipe last 10MiB of disk | ||
| dd if=/dev/zero of="$DEVICE" bs="$SECTOR" count="$MIB_TO_SECTORS" seek="$((SECTORS - MIB_TO_SECTORS))" conv=fsync status=none | ||
| echo "Flashing..." | ||
| } | ||
|
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||
| echo "Found ${FILENAME}..." | ||
|
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||
| # Check the extension of the image file and run appropriate command | ||
| if [[ "$FILENAME" == *.zst ]]; then | ||
| wipe_filesystem | ||
| zstdcat "$FILENAME" | dd of="$DEVICE" bs=32M status=progress conv=fsync oflag=direct iflag=fullblock | ||
| elif [[ "$FILENAME" == *.iso || "$FILENAME" == *.img ]]; then | ||
| wipe_filesystem | ||
| dd if="$FILENAME" of="$DEVICE" bs=32M status=progress conv=fsync oflag=direct iflag=fullblock | ||
| else | ||
| echo "Unsupported file format" | ||
| exit 1 | ||
| fi |
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