mirror of
https://gitlab.com/kernel-firmware/linux-firmware.git
synced 2025-12-10 07:44:48 +01:00
6edd0fd36a
Currently ./check_whence.py is used when submitting new firmware, while copy-firmware.sh when the firmware is to be consumed. Since the latter does (very little) validation, having a malformed WHENCE file can lead to all sorted of problems. From the obvious, where it errors out, to more serious one where it overwrites or executes something it should not have. Just call check_whence.py and error out. It takes 0.2s on my 5 year old mid-range laptop, so the overhead is negligible. Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
135 lines
3.6 KiB
Bash
Executable file
135 lines
3.6 KiB
Bash
Executable file
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# Copy firmware files based on WHENCE list
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#
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verbose=:
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prune=no
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# shellcheck disable=SC2209
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compress=cat
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compext=
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destdir=
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err() {
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printf "ERROR: %s\n" "$*"
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exit 1
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}
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warn() {
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printf "WARNING: %s\n" "$*"
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}
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while test $# -gt 0; do
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case $1 in
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-v | --verbose)
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# shellcheck disable=SC2209
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verbose=echo
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shift
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;;
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-P | --prune)
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prune=yes
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shift
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;;
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--xz)
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if test "$compext" = ".zst"; then
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err "cannot mix XZ and ZSTD compression"
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fi
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compress="xz --compress --quiet --stdout --check=crc32"
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compext=".xz"
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shift
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;;
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--zstd)
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if test "$compext" = ".xz"; then
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err "cannot mix XZ and ZSTD compression"
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fi
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# shellcheck disable=SC2209
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compress="zstd --compress --quiet --stdout"
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compext=".zst"
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shift
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;;
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*)
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if test -n "$destdir"; then
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err "unknown command-line options: $*"
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fi
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destdir="$1"
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shift
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;;
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esac
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done
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if test -z "$destdir"; then
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err "destination directory was not specified"
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fi
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if test -d "$destdir"; then
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find "$destdir" -type d -empty >/dev/null || warn "destination folder is not empty."
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fi
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$verbose "Checking that WHENCE file is formatted properly"
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./check_whence.py || err "check_whence.py has detected errors."
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# shellcheck disable=SC2162 # file/folder name can include escaped symbols
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grep -E '^(RawFile|File):' WHENCE | sed -E -e 's/^(RawFile|File): */\1 /;s/"//g' | while read k f; do
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test -f "$f" || continue
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install -d "$destdir/$(dirname "$f")"
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$verbose "copying/compressing file $f$compext"
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if test "$compress" != "cat" && test "$k" = "RawFile"; then
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$verbose "compression will be skipped for file $f"
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cat "$f" > "$destdir/$f"
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else
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$compress "$f" > "$destdir/$f$compext"
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fi
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done
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# shellcheck disable=SC2162 # file/folder name can include escaped symbols
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grep -E '^Link:' WHENCE | sed -e 's/^Link: *//g;s/-> //g' | while read f d; do
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if test -L "$f$compext"; then
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test -f "$destdir/$f$compext" && continue
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$verbose "copying link $f$compext"
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install -d "$destdir/$(dirname "$f")"
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cp -d "$f$compext" "$destdir/$f$compext"
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if test "x$d" != "x"; then
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target="$(readlink "$f")"
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if test "x$target" != "x$d"; then
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$verbose "WARNING: inconsistent symlink target: $target != $d"
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else
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if test "x$prune" != "xyes"; then
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$verbose "WARNING: unneeded symlink detected: $f"
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else
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$verbose "WARNING: pruning unneeded symlink $f"
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rm -f "$f$compext"
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fi
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fi
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else
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$verbose "WARNING: missing target for symlink $f"
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fi
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else
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directory="$destdir/$(dirname "$f")"
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install -d "$directory"
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target="$(cd "$directory" && realpath -m -s "$d")"
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if test -e "$target"; then
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$verbose "creating link $f -> $d"
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ln -s "$d" "$destdir/$f"
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else
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$verbose "creating link $f$compext -> $d$compext"
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ln -s "$d$compext" "$destdir/$f$compext"
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fi
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fi
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done
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# Verify no broken symlinks
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if test "$(find "$destdir" -xtype l | wc -l)" -ne 0 ; then
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err "Broken symlinks found:\\n$(find "$destdir" -xtype l)"
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fi
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exit 0
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# vim: et sw=4 sts=4 ts=4
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