1 files changed, 25 insertions, 0 deletions

diff --git a/src/api/burn/WixToolset.BootstrapperCore.Native/inc/BootstrapperApplication.h b/src/api/burn/WixToolset.BootstrapperCore.Native/inc/BootstrapperApplication.h
index ea3be214..ad3ef8a3 100644
--- a/src/api/burn/WixToolset.BootstrapperCore.Native/inc/BootstrapperApplication.h
+++ b/src/api/burn/WixToolset.BootstrapperCore.Native/inc/BootstrapperApplication.h
@@ -226,6 +226,7 @@ enum BOOTSTRAPPER_APPLICATION_MESSAGE
     BOOTSTRAPPER_APPLICATION_MESSAGE_ONAPPLYDOWNGRADE,
     BOOTSTRAPPER_APPLICATION_MESSAGE_ONEXECUTEPROCESSCANCEL,
     BOOTSTRAPPER_APPLICATION_MESSAGE_ONDETECTRELATEDBUNDLEPACKAGE,
+    BOOTSTRAPPER_APPLICATION_MESSAGE_ONCACHEPACKAGENONVITALVALIDATIONFAILURE,
 };
 
 enum BOOTSTRAPPER_APPLYCOMPLETE_ACTION
@@ -257,6 +258,14 @@ enum BOOTSTRAPPER_CACHEPACKAGECOMPLETE_ACTION
     BOOTSTRAPPER_CACHEPACKAGECOMPLETE_ACTION_RETRY,
 };
 
+enum BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION
+{
+    BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION_NONE,
+    // Instructs the engine to try to acquire the package so execution can use it.
+    // Most of the time this is used for installing the package during rollback.
+    BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION_ACQUIRE,
+};
+
 enum BOOTSTRAPPER_CACHEVERIFYCOMPLETE_ACTION
 {
     BOOTSTRAPPER_CACHEVERIFYCOMPLETE_ACTION_NONE,
@@ -546,6 +555,8 @@ struct BA_ONCACHEPACKAGEBEGIN_ARGS
     LPCWSTR wzPackageId;
     DWORD cCachePayloads;
     DWORD64 dw64PackageCacheSize;
+    // If caching a package is not vital, then acquisition will be skipped unless the BA opts in through OnCachePackageNonVitalValidationFailure.
+    BOOL fVital;
 };
 
 struct BA_ONCACHEPACKAGEBEGIN_RESULTS
@@ -568,6 +579,20 @@ struct BA_ONCACHEPACKAGECOMPLETE_RESULTS
     BOOTSTRAPPER_CACHEPACKAGECOMPLETE_ACTION action;
 };
 
+struct BA_ONCACHEPACKAGENONVITALVALIDATIONFAILURE_ARGS
+{
+    DWORD cbSize;
+    LPCWSTR wzPackageId;
+    HRESULT hrStatus;
+    BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION recommendation;
+};
+
+struct BA_ONCACHEPACKAGENONVITALVALIDATIONFAILURE_RESULTS
+{
+    DWORD cbSize;
+    BOOTSTRAPPER_CACHEPACKAGENONVITALVALIDATIONFAILURE_ACTION action;
+};
+
 struct BA_ONCACHEPAYLOADEXTRACTBEGIN_ARGS
 {
     DWORD cbSize;