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Remove duplicate get_cred_rcu backport

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ShirkNeko
2025-05-15 21:26:12 +08:00
committed by GitHub
parent e3b6f4d35d
commit 049865daea
1 changed files with 0 additions and 43 deletions
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43
kernel/Makefile
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@@ -134,49 +134,6 @@ ccflags-y += -DSAMSUNG_UH_DRIVER_EXIST
endif
ccflags-y += -DKSU_UMOUNT
ccflags-y += -DKSU_COMPAT_GET_CRED_RCU
# 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 $$?),0)
$(info -- SukiSU compat: adding function 'static inline const struct cred *get_cred_rcu(const struct cred *cred);' to $(srctree)/include/linux/cred.h)
GET_CRED_RCU = static inline const struct cred *get_cred_rcu(const struct cred *cred)\n\
{\n\t\
struct cred *nonconst_cred = (struct cred *) cred;\n\t\
if (!cred)\n\t\t\
return NULL;\n\t\
if (!$(ATOMIC_INC_FUNC)(&nonconst_cred->usage))\n\t\t\
return NULL;\n\t\
validate_creds(cred);\n\t\
return cred;\n\
}\n
$(shell grep -qF "$(GET_CRED_RCU)" $(srctree)/include/linux/cred.h || sed -i '/^static inline void put_cred/i $(GET_CRED_RCU)' $(srctree)/include/linux/cred.h)
# Modify get_task_cred in cred.c
$(info -- SukiSU compat: modifying 'get_task_cred' function in $(srctree)/kernel/cred.c)
$(shell sed -i "s/!$(ATOMIC_INC_FUNC)(&((struct cred \*)cred)->usage)/!get_cred_rcu(cred)/g" $(srctree)/kernel/cred.c)
endif
ifneq ($(shell grep -Eq "^static int can_umount" $(srctree)/fs/namespace.c; echo $$?),0)
$(info -- SukiSU compat: adding function 'static int can_umount(const struct path *path, int flags);' to $(srctree)/fs/namespace.c)
CAN_UMOUNT = static int can_umount(const struct path *path, int flags)\n\
{\n\t\
struct mount *mnt = real_mount(path->mnt);\n\t\
if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))\n\t\t\
return -EINVAL;\n\t\
if (!may_mount())\n\t\t\
return -EPERM;\n\t\
if (path->dentry != path->mnt->mnt_root)\n\t\t\
return -EINVAL;\n\t\
if (!check_mnt(mnt))\n\t\t\
return -EINVAL;\n\t\
if (mnt->mnt.mnt_flags & MNT_LOCKED)\n\t\t\
return -EINVAL;\n\t\
if (flags & MNT_FORCE && !capable(CAP_SYS_ADMIN))\n\t\t\
return -EPERM;\n\t\
return 0;\n\
}\n
$(shell sed -i '/^static bool is_mnt_ns_file/i $(CAN_UMOUNT)' $(srctree)/fs/namespace.c;)
endif
ifneq ($(shell grep -Eq "^int path_umount" $(srctree)/fs/namespace.c; echo $$?),0)
$(info -- SukiSU compat: adding function 'int path_umount(struct path *path, int flags);' to $(srctree)/fs/namespace.c)