CONFIG_WERROR := true CONFIG_NATIVE := true CONFIG_CXX_ALLOCATOR := true CONFIG_UBSAN := false CONFIG_SEAL_METADATA := false CONFIG_ZERO_ON_FREE := true CONFIG_WRITE_AFTER_FREE_CHECK := true CONFIG_SLOT_RANDOMIZE := true CONFIG_SLAB_CANARY := true CONFIG_SLAB_QUARANTINE_RANDOM_LENGTH := 1 CONFIG_SLAB_QUARANTINE_QUEUE_LENGTH := 1 CONFIG_EXTENDED_SIZE_CLASSES := true CONFIG_LARGE_SIZE_CLASSES := true CONFIG_GUARD_SLABS_INTERVAL := 1 CONFIG_GUARD_SIZE_DIVISOR := 2 CONFIG_REGION_QUARANTINE_RANDOM_LENGTH := 128 CONFIG_REGION_QUARANTINE_QUEUE_LENGTH := 1024 CONFIG_REGION_QUARANTINE_SKIP_THRESHOLD := 33554432 # 32MiB CONFIG_FREE_SLABS_QUARANTINE_RANDOM_LENGTH := 32 CONFIG_CLASS_REGION_SIZE := 34359738368 # 32GiB CONFIG_N_ARENA := 4 CONFIG_STATS := false define safe_flag $(shell $(CC) $(if $(filter clang,$(CC)),-Werror=unknown-warning-option) -E $1 - </dev/null >/dev/null 2>&1 && echo $1 || echo $2) endef CPPFLAGS := $(CPPFLAGS) -D_GNU_SOURCE -I include SHARED_FLAGS := -O3 -flto -fPIC -fvisibility=hidden $(call safe_flag,-fno-plt) \ $(call safe_flag,-fstack-clash-protection) -fstack-protector-strong -pipe -Wall -Wextra \ $(call safe_flag,-Wcast-align=strict,-Wcast-align) -Wcast-qual -Wwrite-strings ifeq ($(CC),clang) SHARED_FLAGS += -Wno-constant-logical-operand endif ifeq ($(CONFIG_WERROR),true) SHARED_FLAGS += -Werror endif ifeq ($(CONFIG_NATIVE),true) SHARED_FLAGS += -march=native endif CFLAGS := $(CFLAGS) -std=c11 $(SHARED_FLAGS) -Wmissing-prototypes CXXFLAGS := $(CXXFLAGS) $(call safe_flag,-std=c++17,-std=c++14) $(SHARED_FLAGS) LDFLAGS := $(LDFLAGS) -Wl,--as-needed,-z,defs,-z,relro,-z,now,-z,nodlopen,-z,text SOURCES := chacha.c h_malloc.c memory.c pages.c random.c util.c OBJECTS := $(SOURCES:.c=.o) ifeq ($(CONFIG_CXX_ALLOCATOR),true) # make sure LTO is compatible in case CC and CXX don't match (such as clang and g++) CXX := $(CC) LDLIBS += -lstdc++ -lgcc_s SOURCES += new.cc OBJECTS += new.o endif ifeq ($(CONFIG_UBSAN),true) CFLAGS += -fsanitize=undefined -fno-sanitize-recover=undefined CXXFLAGS += -fsanitize=undefined -fno-sanitize-recover=undefined endif ifeq (,$(filter $(CONFIG_SEAL_METADATA),true false)) $(error CONFIG_SEAL_METADATA must be true or false) endif ifeq (,$(filter $(CONFIG_ZERO_ON_FREE),true false)) $(error CONFIG_ZERO_ON_FREE must be true or false) endif ifeq (,$(filter $(CONFIG_WRITE_AFTER_FREE_CHECK),true false)) $(error CONFIG_WRITE_AFTER_FREE_CHECK must be true or false) endif ifeq (,$(filter $(CONFIG_SLOT_RANDOMIZE),true false)) $(error CONFIG_SLOT_RANDOMIZE must be true or false) endif ifeq (,$(filter $(CONFIG_SLAB_CANARY),true false)) $(error CONFIG_SLAB_CANARY must be true or false) endif ifeq (,$(filter $(CONFIG_EXTENDED_SIZE_CLASSES),true false)) $(error CONFIG_EXTENDED_SIZE_CLASSES must be true or false) endif ifeq (,$(filter $(CONFIG_LARGE_SIZE_CLASSES),true false)) $(error CONFIG_LARGE_SIZE_CLASSES must be true or false) endif ifeq (,$(filter $(CONFIG_STATS),true false)) $(error CONFIG_STATS must be true or false) endif CPPFLAGS += \ -DCONFIG_SEAL_METADATA=$(CONFIG_SEAL_METADATA) \ -DZERO_ON_FREE=$(CONFIG_ZERO_ON_FREE) \ -DWRITE_AFTER_FREE_CHECK=$(CONFIG_WRITE_AFTER_FREE_CHECK) \ -DSLOT_RANDOMIZE=$(CONFIG_SLOT_RANDOMIZE) \ -DSLAB_CANARY=$(CONFIG_SLAB_CANARY) \ -DSLAB_QUARANTINE_RANDOM_LENGTH=$(CONFIG_SLAB_QUARANTINE_RANDOM_LENGTH) \ -DSLAB_QUARANTINE_QUEUE_LENGTH=$(CONFIG_SLAB_QUARANTINE_QUEUE_LENGTH) \ -DCONFIG_EXTENDED_SIZE_CLASSES=$(CONFIG_EXTENDED_SIZE_CLASSES) \ -DCONFIG_LARGE_SIZE_CLASSES=$(CONFIG_LARGE_SIZE_CLASSES) \ -DGUARD_SLABS_INTERVAL=$(CONFIG_GUARD_SLABS_INTERVAL) \ -DGUARD_SIZE_DIVISOR=$(CONFIG_GUARD_SIZE_DIVISOR) \ -DREGION_QUARANTINE_RANDOM_LENGTH=$(CONFIG_REGION_QUARANTINE_RANDOM_LENGTH) \ -DREGION_QUARANTINE_QUEUE_LENGTH=$(CONFIG_REGION_QUARANTINE_QUEUE_LENGTH) \ -DREGION_QUARANTINE_SKIP_THRESHOLD=$(CONFIG_REGION_QUARANTINE_SKIP_THRESHOLD) \ -DFREE_SLABS_QUARANTINE_RANDOM_LENGTH=$(CONFIG_FREE_SLABS_QUARANTINE_RANDOM_LENGTH) \ -DCONFIG_CLASS_REGION_SIZE=$(CONFIG_CLASS_REGION_SIZE) \ -DN_ARENA=$(CONFIG_N_ARENA) \ -DCONFIG_STATS=$(CONFIG_STATS) libhardened_malloc.so: $(OBJECTS) $(CC) $(CFLAGS) $(LDFLAGS) -shared $^ $(LDLIBS) -o $@ chacha.o: chacha.c chacha.h util.h h_malloc.o: h_malloc.c include/h_malloc.h mutex.h memory.h pages.h random.h util.h memory.o: memory.c memory.h util.h new.o: new.cc include/h_malloc.h util.h pages.o: pages.c pages.h memory.h util.h random.o: random.c random.h chacha.h util.h util.o: util.c util.h check: tidy tidy: clang-tidy $(SOURCES) -- $(CPPFLAGS) clean: rm -f libhardened_malloc.so $(OBJECTS) test: libhardened_malloc.so make -C test/ -python3 -m unittest discover --start-directory test/ .PHONY: check clean tidy test