#!/usr/bin/env bash # SPDX-License-Identifier: LGPL-2.1-or-later set -e # Exclude following paths from the Coccinelle transformations EXCLUDED_PATHS=( "src/boot/efi/*" "src/shared/linux/*" "src/basic/linux/*" # Symlinked to test-bus-vtable-cc.cc, which causes issues with the IN_SET macro "src/libsystemd/sd-bus/test-bus-vtable.c" "src/libsystemd/sd-journal/lookup3.c" # Ignore man examples, as they redefine some macros we use internally, which makes Coccinelle complain # and ignore code that tries to use the redefined stuff "man/*" ) TOP_DIR="$(git rev-parse --show-toplevel)" CACHE_DIR="$(dirname "$0")/.coccinelle-cache" ARGS=() # Create an array from files tracked by git... mapfile -t FILES < <(git ls-files ':/*.c') # ...and filter everything that matches patterns from EXCLUDED_PATHS for excl in "${EXCLUDED_PATHS[@]}"; do # shellcheck disable=SC2206 FILES=(${FILES[@]//$excl}) done case "$1" in -i) ARGS+=(--in-place) shift ;; esac if ! parallel -h >/dev/null; then echo 'Please install GNU parallel (package "parallel")' exit 1 fi [[ ${#@} -ne 0 ]] && SCRIPTS=("$@") || SCRIPTS=("$TOP_DIR"/coccinelle/*.cocci) mkdir -p "$CACHE_DIR" echo "--x-- Using Coccinelle cache directory: $CACHE_DIR" echo "--x--" echo "--x-- Note: running spatch for the first time without populated cache takes" echo "--x-- a _long_ time (15-30 minutes). Also, the cache is quite large" echo "--x-- (~15 GiB), so make sure you have enough free space." echo for script in "${SCRIPTS[@]}"; do echo "--x-- Processing $script --x--" TMPFILE="$(mktemp)" echo "+ spatch --sp-file $script ${ARGS[*]} ..." # A couple of notes: # # 1) Limit this to 10 files at once, as processing the ASTs is _very_ memory hungry - e.g. with 20 files # at once one spatch process can take around 2.5 GiB of RAM, which can easily eat up all available RAM # when paired together with parallel # # 2) Make sure spatch can find our includes via -I