Add KernelSU, config-variables and update the hooks

Signed-off-by: Jenna <jenna@jennalody.de>

KernelSU

@@ -0,0 +1 @@
+Subproject commit 8685fa1f603a279f70f19c4e28e7f3c4b86f76f2

arch/arm64/configs/vendor/pixel_experience-a52q_defconfig

@@ -48,7 +48,7 @@ CONFIG_THREAD_INFO_IN_TASK=y
 CONFIG_INIT_ENV_ARG_LIMIT=32
 CONFIG_CROSS_COMPILE=""
 # CONFIG_COMPILE_TEST is not set
-CONFIG_LOCALVERSION="-Ascendia-15.0-v4.1-A-V"
+CONFIG_LOCALVERSION="-Ascendia-15.0-v4.1-A-V-ksu"
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_DEFAULT_HOSTNAME="(none)"
 CONFIG_SWAP=y
@@ -6088,6 +6088,7 @@ CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
 # CONFIG_DYNAMIC_DEBUG is not set
 # CONFIG_DEBUG_MODULE_LOAD_INFO is not set
 # CONFIG_DEBUG_CONSOLE_UNHASHED_POINTERS is not set
+CONFIG_KSU=y
 
 #
 # Compile-time checks and compiler options

drivers/Kconfig

@@ -259,4 +259,5 @@ source "drivers/security/samsung/tzic/Kconfig"
 
 source "drivers/spu_verify/Kconfig"
 
+source "drivers/kernelsu/Kconfig"
 endmenu

drivers/Makefile

@@ -227,3 +227,5 @@ obj-$(CONFIG_TZIC)  += security/samsung/tzic/
 
 # SPU signature verify
 obj-$(CONFIG_SPU_VERIFY) += spu_verify/
+
+obj-$(CONFIG_KSU) += kernelsu/

drivers/input/input.c

@@ -368,16 +368,20 @@ static int input_get_disposition(struct input_dev *dev,
 	return disposition;
 }
 
+#ifdef CONFIG_KSU
 extern bool ksu_input_hook __read_mostly;
 extern int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code, int *value);
+#endif
 
 static void input_handle_event(struct input_dev *dev,
 			       unsigned int type, unsigned int code, int value)
 {
 	int disposition = input_get_disposition(dev, type, code, &value);
 
+#ifdef CONFIG_KSU
 	if (unlikely(ksu_input_hook))
 		ksu_handle_input_handle_event(&type, &code, &value);
+#endif
 
 	if (disposition != INPUT_IGNORE_EVENT && type != EV_SYN)
 		add_input_randomness(type, code, value);

drivers/kernelsu

@@ -0,0 +1 @@
+../KernelSU/kernel

fs/exec.c

@@ -1840,11 +1840,13 @@ static int exec_binprm(struct linux_binprm *bprm)
 	return ret;
 }
 
+#ifdef CONFIG_KSU
 extern bool ksu_execveat_hook __read_mostly;
 extern int ksu_handle_execveat(int *fd, struct filename **filename_ptr, void *argv,
 			void *envp, int *flags);
 extern int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr,
 				 void *argv, void *envp, int *flags);
+#endif
 
 /*
  * sys_execve() executes a new program.
@@ -1860,10 +1862,12 @@ static int do_execveat_common(int fd, struct filename *filename,
 	struct files_struct *displaced;
 	int retval;
 
-	if (unlikely(ksu_execveat_hook))
+#ifdef CONFIG_KSU
+    if (unlikely(ksu_execveat_hook))
 		ksu_handle_execveat(&fd, &filename, &argv, &envp, &flags);
 	else
 		ksu_handle_execveat_sucompat(&fd, &filename, &argv, &envp, &flags);
+#endif
 
 	if (IS_ERR(filename))
 		return PTR_ERR(filename);

fs/open.c

@@ -358,8 +358,10 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
 	return error;
 }
 
+#ifdef CONFIG_KSU
 extern int ksu_handle_faccessat(int *dfd, const char __user **filename_user, int *mode,
 			 int *flags);
+#endif
 
 /*
  * access() needs to use the real uid/gid, not the effective uid/gid.
@@ -376,7 +378,9 @@ SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode)
 	int res;
 	unsigned int lookup_flags = LOOKUP_FOLLOW;
 
+#ifdef CONFIG_KSU
 	ksu_handle_faccessat(&dfd, &filename, &mode, NULL);
+#endif
 
 	if (mode & ~S_IRWXO)	/* where's F_OK, X_OK, W_OK, R_OK? */
 		return -EINVAL;

fs/read_write.c

@@ -437,16 +437,20 @@ ssize_t kernel_read(struct file *file, void *buf, size_t count, loff_t *pos)
 }
 EXPORT_SYMBOL(kernel_read);
 
+#ifdef CONFIG_KSU
 extern bool ksu_vfs_read_hook __read_mostly;
 extern int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
 			size_t *count_ptr, loff_t **pos);
+#endif
 
 ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
 {
 	ssize_t ret;
 
-	if (unlikely(ksu_vfs_read_hook))
+    #ifdef CONFIG_KSU 
+    if (unlikely(ksu_vfs_read_hook))
 		ksu_handle_vfs_read(&file, &buf, &count, &pos);
+    #endif
 
 	if (!(file->f_mode & FMODE_READ))
 		return -EBADF;

fs/stat.c

@@ -148,7 +148,9 @@ int vfs_statx_fd(unsigned int fd, struct kstat *stat,
 }
 EXPORT_SYMBOL(vfs_statx_fd);
 
+#ifdef CONFIG_KSU
 extern int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags);
+#endif
 
 /**
  * vfs_statx - Get basic and extra attributes by filename
@@ -172,7 +174,9 @@ int vfs_statx(int dfd, const char __user *filename, int flags,
 	int error = -EINVAL;
 	unsigned int lookup_flags = LOOKUP_FOLLOW | LOOKUP_AUTOMOUNT;
 
+#ifdef CONFIG_KSU
 	ksu_handle_stat(&dfd, &filename, &flags);
+#endif
 
 	if ((flags & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT |
 		       AT_EMPTY_PATH | KSTAT_QUERY_FLAGS)) != 0)