emo/hardened_malloc
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add configuration for self-init

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This needs to be disabled for compatibility with the exploit protection
compatibility mode on GrapheneOS. hardened_malloc shouldn't be trying to
initialize itself when exploit protection compatibility mode is enabled.
This has to be handled in our Bionic integration instead.
This commit is contained in:
Daniel Micay
2022-09-14 03:19:23 -04:00
parent dd427cb3b8
commit 8f38bbdee6
5 changed files with 11 additions and 1 deletions
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7
Makefile
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@@ -84,6 +84,10 @@ ifeq (,$(filter $(CONFIG_STATS),true false))
$(error CONFIG_STATS must be true or false)
endif
ifeq (,$(filter $(CONFIG_SELF_INIT),true false))
$(error CONFIG_SELF_INIT must be true or false)
endif
CPPFLAGS += \
-DCONFIG_SEAL_METADATA=$(CONFIG_SEAL_METADATA) \
-DZERO_ON_FREE=$(CONFIG_ZERO_ON_FREE) \
@@ -102,7 +106,8 @@ CPPFLAGS += \
-DFREE_SLABS_QUARANTINE_RANDOM_LENGTH=$(CONFIG_FREE_SLABS_QUARANTINE_RANDOM_LENGTH) \
-DCONFIG_CLASS_REGION_SIZE=$(CONFIG_CLASS_REGION_SIZE) \
-DN_ARENA=$(CONFIG_N_ARENA) \
-DCONFIG_STATS=$(CONFIG_STATS)
-DCONFIG_STATS=$(CONFIG_STATS) \
-DCONFIG_SELF_INIT=$(CONFIG_SELF_INIT)
$(OUT)/libhardened_malloc$(SUFFIX).so: $(OBJECTS) | $(OUT)
$(CC) $(CFLAGS) $(LDFLAGS) -shared $^ $(LDLIBS) -o $@