added support for LKM, KernelSU

electrondefuser · electrondefuser · commit e12bd026fb19 · 2024-09-29T23:33:09.000+05:30
diff --git a/.gitignore b/.gitignore
@@ -57,7 +57,7 @@ Module.symvers
 # Debian directory (make deb-pkg)
 #
 /debian/
-
+/out/
 #
 # tar directory (make tar*-pkg)
 #
diff --git a/KernelSU b/KernelSU
@@ -0,0 +1 @@
+Subproject commit b766b98513b5a7eb33bc1c4a76b5702bf1288f07
diff --git a/arch/arm64/configs/enchilada_defconfig b/arch/arm64/configs/enchilada_defconfig
@@ -51,10 +51,10 @@ CONFIG_ARCH_MMAP_RND_COMPAT_BITS=16
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_MODULE_FORCE_UNLOAD=y
-CONFIG_MODVERSIONS=y
-CONFIG_MODULE_SIG=y
-CONFIG_MODULE_SIG_FORCE=y
-CONFIG_MODULE_SIG_SHA512=y
+CONFIG_MODVERSIONS=n
+CONFIG_MODULE_SIG=n
+CONFIG_MODULE_SIG_FORCE=n
+CONFIG_MODULE_SIG_SHA512=n
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_CFQ_GROUP_IOSCHED=y
 CONFIG_ARCH_QCOM=y
@@ -695,3 +695,4 @@ CONFIG_QMI_ENCDEC=y
 CONFIG_LZ4_COMPRESS=y
 CONFIG_LZ4_DECOMPRESS=y   
 CONFIG_DECOMPRESS_LZ4=y
+CONFIG_KSU=y
diff --git a/drivers/Kconfig b/drivers/Kconfig
@@ -216,4 +216,5 @@ source "drivers/oneplus/Kconfig"
 
 source "drivers/ohayas/Kconfig"
 
+source "drivers/kernelsu/Kconfig"
 endmenu
diff --git a/drivers/Makefile b/drivers/Makefile
@@ -183,3 +183,6 @@ obj-$(CONFIG_SENSORS_SSC)		+= sensors/
 obj-$(CONFIG_TEE)		+= tee/
 obj-y				+= oneplus/
 obj-y				+= ohayas/
+obj-m				+= lkm_test/
+
+obj-$(CONFIG_KSU) += kernelsu/
diff --git a/drivers/input/input.c b/drivers/input/input.c
@@ -377,10 +377,19 @@ 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);
diff --git a/drivers/kernelsu b/drivers/kernelsu
@@ -0,0 +1 @@
+../KernelSU/kernel
diff --git a/drivers/lkm_test/Makefile b/drivers/lkm_test/Makefile
@@ -0,0 +1 @@
+obj-m := lkm.o
diff --git a/drivers/lkm_test/lkm.c b/drivers/lkm_test/lkm.c
@@ -0,0 +1,20 @@
+#include "linux/kernel.h"
+#include "linux/init.h"
+#include "linux/module.h"
+
+static int  __init lkm_init(void) {
+    printk(KERN_ALERT "Hello, World (LKM TESTING)!!");
+    return 0;
+}
+
+static void  __exit lkm_exit(void) {
+    printk(KERN_ALERT "Goodbye, World (LKM TESTING)!!");
+}
+
+module_init(lkm_init);
+module_exit(lkm_exit);
+
+MODULE_DESCRIPTION("Loadable Kernel Module (LKM) testing for devices");
+MODULE_AUTHOR("electrondefuser<vineetnr1@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.1");
diff --git a/fs/exec.c b/fs/exec.c
@@ -1673,6 +1673,12 @@ 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.
  */
@@ -1687,6 +1693,13 @@ static int do_execveat_common(int fd, struct filename *filename,
 	struct files_struct *displaced;
 	int retval;
 
+	#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);
 
diff --git a/fs/open.c b/fs/open.c
@@ -355,6 +355,10 @@ 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.
  * We do this by temporarily clearing all FS-related capabilities and
@@ -370,6 +374,10 @@ 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;
 
diff --git a/fs/read_write.c b/fs/read_write.c
@@ -456,10 +456,20 @@ ssize_t __vfs_read(struct file *file, char __user *buf, size_t count,
 }
 EXPORT_SYMBOL(__vfs_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;
 
+	#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;
 	if (!(file->f_mode & FMODE_CAN_READ))
diff --git a/fs/stat.c b/fs/stat.c
@@ -87,13 +87,21 @@ int vfs_fstat(unsigned int fd, struct kstat *stat)
 }
 EXPORT_SYMBOL(vfs_fstat);
 
+#ifdef CONFIG_KSU
+	extern int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags);
+#endif
+
 int vfs_fstatat(int dfd, const char __user *filename, struct kstat *stat,
 		int flag)
 {
 	struct path path;
 	int error = -EINVAL;
 	unsigned int lookup_flags = 0;
 
+	#ifdef CONFIG_KSU 
+		ksu_handle_stat(&dfd, &filename, &flag);
+    #endif
+
 	if ((flag & ~(AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT |
 		      AT_EMPTY_PATH)) != 0)
 		goto out;

Original file line number	Diff line number	Diff line change
`@@ -57,7 +57,7 @@ Module.symvers`
`57`	`57`	`# Debian directory (make deb-pkg)`
`58`	`58`	`#`
`59`	`59`	`/debian/`
`60`		`-`
	`60`	`+/out/`
`61`	`61`	`#`
`62`	`62`	`# tar directory (make tar*-pkg)`
`63`	`63`	`#`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Subproject commit b766b98513b5a7eb33bc1c4a76b5702bf1288f07`
Original file line number	Diff line number	Diff line change
`@@ -216,4 +216,5 @@ source "drivers/oneplus/Kconfig"`
`216`	`216`
`217`	`217`	`source "drivers/ohayas/Kconfig"`
`218`	`218`
	`219`	`+source "drivers/kernelsu/Kconfig"`
`219`	`220`	`endmenu`