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FreeBSD packaging: compare ELF header bytes without od's column padding

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Brandon ThomasandClaude Opus 5.5 committed 2026-10-30 23:21:55 -04:00
1 parent eaeb06c655
commit 255df314da
1 file changed
+8 -5
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packaging/freebsd/package.sh
+8 -5
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@@ -45,14 +45,17 @@ fi
# Refuse placeholder, wrong-arch or non-FreeBSD binaries (also with --skip-build). Bytes: ELF magic,
# 64-bit little-endian, OSABI SYSV or FreeBSD, e_machine.
case "$ARCH" in
x86_64) MACHINE=" 3e 00" ;;
aarch64) MACHINE=" b7 00" ;;
x86_64) MACHINE=3e00 ;;
aarch64) MACHINE=b700 ;;
*) echo "error: no ELF machine check for arch '$ARCH'" >&2; exit 1 ;;
esac
# FreeBSD's od pads its columns differently from GNU od, so compare the hex digits alone.
hex() { od -An -tx1 "$@" | tr -d ' \n'; }
for f in "$BIN/deckcraft" "$BIN/deckcraft-cli"; do
[[ "$(od -An -tx1 -N6 "$f" 2>/dev/null)" == " 7f 45 4c 46 02 01" ]] || { echo "error: $f is not a 64-bit little-endian ELF" >&2; exit 1; }
[[ "$(od -An -tx1 -j7 -N1 "$f")" =~ ^\ (00|09)$ ]] || { echo "error: $f is not a FreeBSD ELF (OSABI)" >&2; exit 1; }
[[ "$(od -An -tx1 -j18 -N2 "$f")" == "$MACHINE" ]] || { echo "error: $f is not an ELF for $ARCH" >&2; exit 1; }
[[ -f "$f" ]] || { echo "error: $f was not built" >&2; exit 1; }
[[ "$(hex -N6 "$f")" == 7f454c460201 ]] || { echo "error: $f is not a 64-bit little-endian ELF (starts $(hex -N6 "$f"))" >&2; exit 1; }
[[ "$(hex -j7 -N1 "$f")" =~ ^(00|09)$ ]] || { echo "error: $f is not a FreeBSD ELF (OSABI $(hex -j7 -N1 "$f"))" >&2; exit 1; }
[[ "$(hex -j18 -N2 "$f")" == "$MACHINE" ]] || { echo "error: $f is not an ELF for $ARCH (e_machine $(hex -j18 -N2 "$f"))" >&2; exit 1; }
done
NAME="deckcraft-$VERSION-freebsd-$ARCH"