HardenedBSD/tools/build/stale-symlink-buildworld.sh
2024-09-09 14:55:29 +00:00

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#!/bin/sh
# Copyright (c) Feb 2024 Wolfram Schneider <wosch@FreeBSD.org>
# SPDX-License-Identifier: BSD-2-Clause
#
# stale-symlink-buildworld.sh - check for stale symlinks on a FreeBSD system
#
# The purpose of this script is to detect stale symlinks, report them to
# stderr and exit with a non-zero status. All other cases are ignored,
# such as no symlinks, missing directories, permission problems, etc.
#
# You can run the script before or after `make installworld', or any other
# make targets thats installs files.
#
# You can also check your local ports with:
#
# env STALE_SYMLINK_BUILDWORLD_DIRS=/usr/local ./stale-symlink-buildworld.sh
PATH="/bin:/usr/bin"; export PATH
: ${ncpu=$(nproc)}
obj_dir_prefix=${MAKEOBJDIRPREFIX:="/usr/obj"}
# check other directories as well
: ${STALE_SYMLINK_BUILDWORLD_DIRS=$obj_dir_prefix}
trap 'rm -f $script' 0
script=$(mktemp -t stale-symlink)
chmod u+x $script
# create a temporary shell script to check for stale symbolic links
cat << 'EOF' > $script
file="$1"
if [ ! -e "$file" ]; then
echo "stale symlink detected: $(ls -ld $file)" >&2
exit 1
else
exit 0
fi
EOF
find -s -H \
/bin \
/boot \
/etc \
/lib \
/libexec \
/sbin \
/usr/bin \
/usr/include \
/usr/lib \
/usr/lib32 \
/usr/libdata \
/usr/libexec \
/usr/sbin \
/usr/src \
/usr/share \
$STALE_SYMLINK_BUILDWORLD_DIRS \
-type l \
-print0 | xargs -n1 -0 -P${ncpu} $script
#EOF