KSU:Manually call KernelSU

Author: Molyuu

arch/arm64/configs/vendor/gauguin_user_defconfig

@@ -599,7 +599,7 @@ CONFIG_CRYPTO_AES_ARM64_NEON_BLK=y
 # CONFIG_JUMP_LABEL is not set
 CONFIG_UPROBES=y
 CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
-CONFIG_KPROBES=y
+# CONFIG_KPROBES=y
 CONFIG_HAVE_KPROBES=y
 CONFIG_HAVE_KRETPROBES=y
 CONFIG_HAVE_NMI=y

fs/exec.c

@@ -1912,11 +1912,14 @@ 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);
 }
 

fs/open.c

@@ -348,13 +348,16 @@ 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
  * switching the fsuid/fsgid around to the real ones.
  */
 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;