From cf3a1e4794daf9db8045003c893540c7af8180a1 Mon Sep 17 00:00:00 2001
From: Mykola Grymalyuk <khronokernel@icloud.com>
Date: Sun, 23 Oct 2022 19:55:45 -0600
Subject: [PATCH] kern_start: Add Big Sur+ support for Install.app usage

---
 Changelog.md                |  3 +++
 CryptexFixup/kern_start.cpp | 38 ++++++++++++++++++++-----------------
 2 files changed, 24 insertions(+), 17 deletions(-)

diff --git a/Changelog.md b/Changelog.md
index 588555d..c15bdb5 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -2,3 +2,6 @@ CryptexFixup Changelog
 ======================
 #### v1.0.0
 - Initial release
+
+#### v1.0.1
+- Allow in-OS Install macOS.app usage on Big Sur and newer
diff --git a/CryptexFixup/kern_start.cpp b/CryptexFixup/kern_start.cpp
index 3c422d1..1106b72 100644
--- a/CryptexFixup/kern_start.cpp
+++ b/CryptexFixup/kern_start.cpp
@@ -102,23 +102,27 @@ static void pluginStart() {
 		}
 	}
 
-	// Userspace Patcher (ramrod)
-	lilu.onPatcherLoadForce([](void *user, KernelPatcher &patcher) {
-		KernelPatcher::RouteRequest csRoute = KernelPatcher::RouteRequest("_cs_validate_page", patched_cs_validate_page, orig_cs_validate);
-		if (!patcher.routeMultipleLong(KernelPatcher::KernelID, &csRoute, 1))
-			SYSLOG(MODULE_SHORT, "failed to route cs validation pages");
-	});
-
+    // Userspace Patcher (ramrod)
+    // Support Big Sur and newer for in-place Install macOS.app usage
+    if (getKernelVersion() >= KernelVersion::BigSur) {
+        lilu.onPatcherLoadForce([](void *user, KernelPatcher &patcher) {
+            KernelPatcher::RouteRequest csRoute = KernelPatcher::RouteRequest("_cs_validate_page", patched_cs_validate_page, orig_cs_validate);
+            if (!patcher.routeMultipleLong(KernelPatcher::KernelID, &csRoute, 1))
+                SYSLOG(MODULE_SHORT, "failed to route cs validation pages");
+        });
+    }
+    
 	// Kernel Space Patcher (APFS.kext)
-	if (checkKernelArgument("-crypt_allow_hash_validation")) {
-		SYSLOG(MODULE_SHORT, "disabling APFS.kext patching upon user request");
-	} else {
-		lilu.onKextLoadForce(kextList, arrsize(kextList),
-		[](void *user, KernelPatcher &patcher, size_t index, mach_vm_address_t address, size_t size) {
-			processKext(patcher, index, address, size);
-		}, nullptr);
-	}
-
+    if (getKernelVersion() >= KernelVersion::Ventura) {
+        if (checkKernelArgument("-crypt_allow_hash_validation")) {
+            SYSLOG(MODULE_SHORT, "disabling APFS.kext patching upon user request");
+        } else {
+            lilu.onKextLoadForce(kextList, arrsize(kextList),
+                                 [](void *user, KernelPatcher &patcher, size_t index, mach_vm_address_t address, size_t size) {
+                processKext(patcher, index, address, size);
+            }, nullptr);
+        }
+    }
 }
 
 // Boot args.
@@ -143,7 +147,7 @@ PluginConfiguration ADDPR(config) {
 	arrsize(bootargDebug),
 	bootargBeta,
 	arrsize(bootargBeta),
-	KernelVersion::Ventura,
+	KernelVersion::BigSur,
 	KernelVersion::Ventura,
 	pluginStart
 };