KernelSU.patch

From 97357837f2db1b6ecdd0b3ad6ec568307cf68240 Mon Sep 17 00:00:00 2001
From: CHIZI-0618 <kay9925@outlook.com>
Date: Thu, 16 Feb 2023 14:51:23 +0800
Subject: [PATCH] Patch:

Add KernelSU support
Add KernelSU SafeMode support
---
 drivers/input/input.c | 3 +++
 fs/exec.c             | 4 ++++
 fs/open.c             | 4 ++++
 fs/read_write.c       | 5 +++++
 fs/stat.c             | 4 ++++
 5 files changed, 20 insertions(+)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 159dd87b93b0..e8bfe037e705 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -378,10 +378,13 @@ static int input_get_disposition(struct input_dev *dev,
 	return disposition;
 }
 
+extern int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code, int *value);
+
 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);
+	ksu_handle_input_handle_event(&type, &code, &value);
 
 	if (disposition != INPUT_IGNORE_EVENT && type != EV_SYN)
 		add_input_randomness(type, code, value);
diff --git a/fs/exec.c b/fs/exec.c
index 087f003b9674..895ba941c398 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1929,11 +1929,15 @@ static int __do_execve_file(int fd, struct filename *filename,
 	return retval;
 }
 
+extern int ksu_handle_execveat(int *fd, struct filename **filename_ptr, void *argv,
+			void *envp, int *flags);
+
 static int do_execveat_common(int fd, struct filename *filename,
 			      struct user_arg_ptr argv,
 			      struct user_arg_ptr envp,
 			      int flags)
 {
+	ksu_handle_execveat(&fd, &filename, &argv, &envp, &flags);
 	return __do_execve_file(fd, filename, argv, envp, flags, NULL);
 }
 
diff --git a/fs/open.c b/fs/open.c
index 998303c7b72e..d9541e222763 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -348,6 +348,9 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
 	return ksys_fallocate(fd, mode, offset, len);
 }
 
+extern int ksu_handle_faccessat(int *dfd, const char __user **filename_user, int *mode,
+			 int *flags);
+
 /*
  * access() needs to use the real uid/gid, not the effective uid/gid.
  * We do this by temporarily clearing all FS-related capabilities and
@@ -355,6 +358,7 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
  */
 long do_faccessat(int dfd, const char __user *filename, int mode)
 {
+	ksu_handle_faccessat(&dfd, &filename, &mode, NULL);
 	const struct cred *old_cred;
 	struct cred *override_cred;
 	struct path path;
diff --git a/fs/read_write.c b/fs/read_write.c
index 650fc7e0f3a6..29740df1519e 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -434,10 +434,15 @@ ssize_t kernel_read(struct file *file, void *buf, size_t count, loff_t *pos)
 }
 EXPORT_SYMBOL(kernel_read);
 
+extern int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
+			size_t *count_ptr, loff_t **pos);
+
 ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
 {
 	ssize_t ret;
 
+	ksu_handle_vfs_read(&file, &buf, &count, &pos);
+
 	if (!(file->f_mode & FMODE_READ))
 		return -EBADF;
 	if (!(file->f_mode & FMODE_CAN_READ))
diff --git a/fs/stat.c b/fs/stat.c
index 376543199b5a..b35e21047ce7 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -148,6 +148,8 @@ int vfs_statx_fd(unsigned int fd, struct kstat *stat,
 }
 EXPORT_SYMBOL(vfs_statx_fd);
 
+extern int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags);
+
 /**
  * vfs_statx - Get basic and extra attributes by filename
  * @dfd: A file descriptor representing the base dir for a relative filename
@@ -170,6 +172,8 @@ int vfs_statx(int dfd, const char __user *filename, int flags,
 	int error = -EINVAL;
 	unsigned int lookup_flags = LOOKUP_FOLLOW | LOOKUP_AUTOMOUNT;
 
+	ksu_handle_stat(&dfd, &filename, &flags);
+
 	if ((flags & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT |
 		       AT_EMPTY_PATH | KSTAT_QUERY_FLAGS)) != 0)
 		return -EINVAL;
-- 
2.34.1