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Update kernel Makefile to support KSU compatibility, add get_cred_rcu function and modify get_task_cred logic

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This commit is contained in:
ShirkNeko
2025-04-11 03:17:23 +08:00
parent 9554f7eba7
commit 204eba4cc1
1 changed files with 2 additions and 13 deletions
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15
kernel/Makefile
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@@ -127,20 +127,12 @@ ifeq ($(shell grep -q "CONFIG_KDP_CRED" $(srctree)/kernel/cred.c; echo $$?),0)
ccflags-y += -DSAMSUNG_UH_DRIVER_EXIST
endif
BackPort := $(strip $(shell \
if [ "$(VERSION)" -ge "5" -a "$(PATCHLEVEL)" -ge "10" ]; then \
echo FALSE; \
else \
echo TRUE; \
fi \
))
ifeq ($(BackPort),FALSE)
# 处理自动backport
ifeq ($(IS_GKI),FALSE)
ccflags-y += -DKSU_COMPAT_GET_CRED_RCU
ccflags-y += -DKSU_UMOUNT
# Determine the appropriate atomic function and apply patch accordingly
ifeq ($(shell grep -q "atomic_inc_not_zero" $(srctree)/kernel/cred.c; echo $$?),0)
ATOMIC_INC_FUNC = atomic_inc_not_zero
else ifeq ($(shell grep -q "atomic_long_inc_not_zero" $(srctree)/kernel/cred.c; echo $$?),0)
@@ -149,10 +141,8 @@ else
$(info -- SukiSU: Neither atomic_inc_not_zero nor atomic_long_inc_not_zero found in kernel/cred.c)
endif
# Inform which function is being patched
$(info -- SukiSU: Using $(ATOMIC_INC_FUNC) in get_cred_rcu patch.)
# Add the get_cred_rcu function to cred.h if not already present
ifneq ($(shell grep -Eq "^static inline const struct cred \*get_cred_rcu" $(srctree)/include/linux/cred.h; echo $$?),0)
$(info -- SukiSU: adding function 'static inline const struct cred *get_cred_rcu(const struct cred *cred);' to $(srctree)/include/linux/cred.h)
GET_CRED_RCU = static inline const struct cred *get_cred_rcu(const struct cred *cred)\n\
@@ -167,7 +157,6 @@ GET_CRED_RCU = static inline const struct cred *get_cred_rcu(const struct cred *
}\n
$(shell grep -qF "$(GET_CRED_RCU)" $(srctree)/include/linux/cred.h || sed -i '/^static inline void put_cred/i $(GET_CRED_RCU)' $(srctree)/include/linux/cred.h)
# Modify get_task_cred in cred.c
$(info -- SukiSU: modifying 'get_task_cred' function in $(srctree)/kernel/cred.c)
$(shell sed -i "s/!$(ATOMIC_INC_FUNC)(&((struct cred \*)cred)->usage)/!get_cred_rcu(cred)/g" $(srctree)/kernel/cred.c)
endif