diff options
Diffstat (limited to '')
| -rwxr-xr-x | copy-firmware.sh | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/copy-firmware.sh b/copy-firmware.sh new file mode 100755 index 0000000..6757c6c --- /dev/null +++ b/copy-firmware.sh @@ -0,0 +1,148 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Copy firmware files based on WHENCE list +# + +verbose=: +prune=no +# shellcheck disable=SC2209 +compress=cat +compext= +skip_dedup=0 + +while test $# -gt 0; do + case $1 in + -v | --verbose) + # shellcheck disable=SC2209 + verbose=echo + shift + ;; + + -P | --prune) + prune=yes + shift + ;; + + --xz) + if test "$compext" = ".zst"; then + echo "ERROR: cannot mix XZ and ZSTD compression" + exit 1 + fi + compress="xz --compress --quiet --stdout --check=crc32" + compext=".xz" + shift + ;; + + --zstd) + if test "$compext" = ".xz"; then + echo "ERROR: cannot mix XZ and ZSTD compression" + exit 1 + fi + # shellcheck disable=SC2209 + compress="zstd --compress --quiet --stdout" + compext=".zst" + shift + ;; + + --ignore-duplicates) + skip_dedup=1 + shift + ;; + + -*) + if test "$compress" = "cat"; then + echo "ERROR: unknown command-line option: $1" + exit 1 + fi + compress="$compress $1" + shift + ;; + *) + if test "x$destdir" != "x"; then + echo "ERROR: unknown command-line options: $*" + exit 1 + fi + + destdir="$1" + shift + ;; + esac +done + +if [ -z "$destdir" ]; then + echo "ERROR: destination directory was not specified" + exit 1 +fi + +if ! command -v rdfind >/dev/null; then + if [ "$skip_dedup" != 1 ]; then + echo "ERROR: rdfind is not installed. Pass --ignore-duplicates to skip deduplication" + exit 1 + fi +fi + +# shellcheck disable=SC2162 # file/folder name can include escaped symbols +grep -E '^(RawFile|File):' WHENCE | sed -E -e 's/^(RawFile|File): */\1 /;s/"//g' | while read k f; do + test -f "$f" || continue + install -d "$destdir/$(dirname "$f")" + $verbose "copying/compressing file $f$compext" + if test "$compress" != "cat" && test "$k" = "RawFile"; then + $verbose "compression will be skipped for file $f" + cat "$f" > "$destdir/$f" + else + $compress "$f" > "$destdir/$f$compext" + fi +done + +if [ "$skip_dedup" != 1 ] ; then + $verbose "Finding duplicate files" + rdfind -makesymlinks true -makeresultsfile false "$destdir" >/dev/null + find "$destdir" -type l | while read -r l; do + target="$(realpath "$l")" + $verbose "Correcting path for $l" + ln -fs "$(realpath --relative-to="$(dirname "$(realpath -s "$l")")" "$target")" "$l" + done +fi + +# shellcheck disable=SC2162 # file/folder name can include escaped symbols +grep -E '^Link:' WHENCE | sed -e 's/^Link: *//g;s/-> //g' | while read f d; do + if test -L "$f$compext"; then + test -f "$destdir/$f$compext" && continue + $verbose "copying link $f$compext" + install -d "$destdir/$(dirname "$f")" + cp -d "$f$compext" "$destdir/$f$compext" + + if test "x$d" != "x"; then + target="$(readlink "$f")" + + if test "x$target" != "x$d"; then + $verbose "WARNING: inconsistent symlink target: $target != $d" + else + if test "x$prune" != "xyes"; then + $verbose "WARNING: unneeded symlink detected: $f" + else + $verbose "WARNING: pruning unneeded symlink $f" + rm -f "$f$compext" + fi + fi + else + $verbose "WARNING: missing target for symlink $f" + fi + else + directory="$destdir/$(dirname "$f")" + install -d "$directory" + target="$(cd "$directory" && realpath -m -s "$d")" + if test -d "$target"; then + $verbose "creating link $f -> $d" + ln -s "$d" "$destdir/$f" + else + $verbose "creating link $f$compext -> $d$compext" + ln -s "$d$compext" "$destdir/$f$compext" + fi + fi +done + +exit 0 + +# vim: et sw=4 sts=4 ts=4 |