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# Copyright (c) Meta Platforms, Inc. and affiliates.
# SPDX-License-Identifier: LGPL-2.1-or-later
# Makefile used to generate tests/resources/crashme*
.PHONY: all cores clean
.DELETE_ON_ERROR:
EXECUTABLES := crashme crashme_pie crashme_static crashme_static_pie
CORES := $(addsuffix .core, $(EXECUTABLES)) $(addsuffix _no_headers.core, $(EXECUTABLES))
BINARIES := crashme.so $(EXECUTABLES) crashme.dwz crashme.so.dwz crashme.alt
ZSTD_BINARIES := $(addsuffix .zst, $(BINARIES))
ZSTD_CORES := $(addsuffix .zst, $(CORES))
all: $(BINARIES) cores $(ZSTD_BINARIES) $(ZSTD_CORES)
clean:
rm -f $(BINARIES) $(CORES) $(ZSTD_BINARIES) $(ZSTD_CORES)
crashme.so: crashme.c common.c
gcc -g -Os -fpic -shared $^ -o $@
crashme: main.c common.c crashme.so
gcc -g -Os -fno-pie -no-pie $(filter-out crashme.so,$^) -o $@ -L . -l:crashme.so -Wl,-rpath,$(CURDIR)
crashme_pie: main.c common.c crashme.so
gcc -g -Os -fpie -pie $(filter-out crashme.so,$^) -o $@ -L . -l:crashme.so -Wl,-rpath,$(CURDIR)
crashme_static: main.c common.c crashme.c
musl-gcc -g -Os -fno-pie -static $^ -o $@
crashme_static_pie: main.c common.c crashme.c
musl-gcc -g -Os -fpie -static-pie $^ -o $@
crashme.dwz crashme.so.dwz crashme.alt &: crashme crashme.so
cp crashme crashme.dwz
cp crashme.so crashme.so.dwz
dwz -m crashme.alt -r crashme.dwz crashme.so.dwz
cores: $(CORES)
.NOTPARALLEL: cores
define CORE_COMMAND
flock /proc/sys/kernel/core_pattern sh -e -c '\
ulimit -c unlimited; \
echo "$$COREDUMP_FILTER" > /proc/$$$$/coredump_filter; \
old_pattern=$$(cat /proc/sys/kernel/core_pattern); \
restore_core_pattern() { \
echo "$$old_pattern" > /proc/sys/kernel/core_pattern; \
}; \
trap restore_core_pattern EXIT; \
echo "$$PWD/core.%p" > /proc/sys/kernel/core_pattern; \
su "$$SUDO_USER" -c "env -i sh -l -c \"exec ./$<\" & wait; mv core.\$$! $@"'
endef
%.core: %
sudo env COREDUMP_FILTER=0x33 $(CORE_COMMAND)
%_no_headers.core: %
sudo env COREDUMP_FILTER=0x23 $(CORE_COMMAND)
%.zst: %
zstd -19 $< -o $@
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