kernelsu: add min_scope_syscall_hooks_v1.4 for manual hook mode

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

Author: Loukious

drivers/input/input.c

@@ -437,18 +437,17 @@ static void input_handle_event(struct input_dev *dev,
  * axis, etc.
  */
 
-#ifdef CONFIG_KSU
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
 extern bool ksu_input_hook __read_mostly;
-extern __attribute__((cold)) int ksu_handle_input_handle_event(
-			unsigned int *type, unsigned int *code, int *value);
+extern int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code, int *value);
 #endif
 
 void input_event(struct input_dev *dev,
 		 unsigned int type, unsigned int code, int value)
 {
 	unsigned long flags;
 
-#ifdef CONFIG_KSU
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
 	if (unlikely(ksu_input_hook))
 		ksu_handle_input_handle_event(&type, &code, &value);
 #endif

fs/exec.c

@@ -1986,11 +1986,26 @@ void set_dumpable(struct mm_struct *mm, int value)
 	} while (cmpxchg(&mm->flags, old, new) != old);
 }
 
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
+extern bool ksu_execveat_hook __read_mostly;
+extern __attribute__((hot, always_inline)) int ksu_handle_execve_sucompat(const char __user **filename_user,
+			       void *__never_use_argv, void *__never_use_envp,
+			       int *__never_use_flags);
+extern int ksu_handle_execve_ksud(const char __user *filename_user,
+			const char __user *const __user *__argv);
+#endif
+
 SYSCALL_DEFINE3(execve,
 		const char __user *, filename,
 		const char __user *const __user *, argv,
 		const char __user *const __user *, envp)
 {
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
+	if (unlikely(ksu_execveat_hook))
+		ksu_handle_execve_ksud(filename, argv);
+	else
+		ksu_handle_execve_sucompat(&filename, NULL, NULL, NULL);
+#endif
 	return do_execve(getname(filename), argv, envp);
 }
 
@@ -2012,6 +2027,10 @@ COMPAT_SYSCALL_DEFINE3(execve, const char __user *, filename,
 	const compat_uptr_t __user *, argv,
 	const compat_uptr_t __user *, envp)
 {
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK) // 32-bit su and 32-on-64 support
+	if (!ksu_execveat_hook)
+		ksu_handle_execve_sucompat(&filename, NULL, NULL, NULL);
+#endif
 	return compat_do_execve(getname(filename), argv, envp);
 }
 

fs/open.c

@@ -354,10 +354,10 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
 	return error;
 }
 
-#ifdef CONFIG_KSU
-__attribute__((hot)) 
-extern int ksu_handle_faccessat(int *dfd, const char __user **filename_user,
-				int *mode, int *flags);
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
+extern __attribute__((hot)) int
+	ksu_handle_faccessat(int *dfd, const char __user **filename_user,
+			     int *mode, int *flags);
 #endif
 
 /*
@@ -375,7 +375,7 @@ SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode)
 	int res;
 	unsigned int lookup_flags = LOOKUP_FOLLOW;
 
-#ifdef CONFIG_KSU
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
 	ksu_handle_faccessat(&dfd, &filename, &mode, NULL);
 #endif
 	if (mode & ~S_IRWXO)	/* where's F_OK, X_OK, W_OK, R_OK? */

fs/read_write.c

@@ -568,23 +568,23 @@ static inline void file_pos_write(struct file *file, loff_t pos)
 		file->f_pos = pos;
 }
 
-#ifdef CONFIG_KSU
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
 extern bool ksu_vfs_read_hook __read_mostly;
-extern __attribute__((cold)) int ksu_handle_sys_read(unsigned int fd,
-				char __user **buf_ptr, size_t *count_ptr);
+extern int ksu_handle_sys_read(unsigned int fd, char __user **buf_ptr,
+			       size_t *count_ptr);
 #endif
 
 SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count)
 {
 	struct fd f = fdget_pos(fd);
 	ssize_t ret = -EBADF;
 
-#ifdef CONFIG_KSU
-	if (unlikely(ksu_vfs_read_hook)) 
-		ksu_handle_sys_read(fd, &buf, &count);
-#endif
 	if (f.file) {
 		loff_t pos = file_pos_read(f.file);
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
+		if (unlikely(ksu_vfs_read_hook))
+			ksu_handle_sys_read(fd, &buf, &count);
+#endif
 		ret = vfs_read(f.file, buf, count, &pos);
 		if (ret >= 0)
 			file_pos_write(f.file, pos);

fs/stat.c

@@ -372,10 +372,8 @@ SYSCALL_DEFINE2(newlstat, const char __user *, filename,
 	return cp_new_stat(&stat, statbuf);
 }
 
-#if defined(CONFIG_KSU)
-__attribute__((hot)) 
-extern int ksu_handle_stat(int *dfd, const char __user **filename_user,
-				int *flags);
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
+extern __attribute__((hot, always_inline)) int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags);
 #endif
 
 #if !defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_SYS_NEWFSTATAT)
@@ -385,6 +383,9 @@ SYSCALL_DEFINE4(newfstatat, int, dfd, const char __user *, filename,
 	struct kstat stat;
 	int error;
 
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
+	ksu_handle_stat(&dfd, &filename, &flag);
+#endif
 	error = vfs_fstatat(dfd, filename, &stat, flag);
 	if (error)
 		return error;
@@ -529,7 +530,7 @@ SYSCALL_DEFINE4(fstatat64, int, dfd, const char __user *, filename,
 	struct kstat stat;
 	int error;
 
-#if defined(CONFIG_KSU)
+#if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)
 	ksu_handle_stat(&dfd, &filename, &flag);
 #endif