From 4a22a2a72a1dc1f614433457b5cd536a52d8b991 Mon Sep 17 00:00:00 2001
From: Kartavya Vashishtha <sendtokartavya@gmail.com>
Date: Fri, 16 Feb 2024 19:14:22 -0500
Subject: [PATCH] kernelbase: Implement CopyFile2().

(cherry picked from commit 1e348427994e5675ded3b1540a15a8af85cc8ebc)
---
 dlls/kernel32/kernel32.spec     |  1 +
 dlls/kernelbase/file.c          | 50 +++++++++++++++++++++++++++++----
 dlls/kernelbase/kernelbase.spec |  2 +-
 3 files changed, 46 insertions(+), 7 deletions(-)

diff --git a/dlls/kernel32/kernel32.spec b/dlls/kernel32/kernel32.spec
index fb4e21adc30..ab1ece4eb6c 100644
--- a/dlls/kernel32/kernel32.spec
+++ b/dlls/kernel32/kernel32.spec
@@ -257,6 +257,7 @@
 @ stdcall -import ConvertThreadToFiberEx(ptr long)
 @ stdcall ConvertToGlobalHandle(long)
 @ stdcall -import CopyContext(ptr long ptr)
+@ stdcall -import CopyFile2(wstr wstr ptr)
 @ stdcall CopyFileA(str str long)
 @ stdcall CopyFileExA (str str ptr ptr ptr long)
 @ stdcall -import CopyFileExW(wstr wstr ptr ptr ptr long)
diff --git a/dlls/kernelbase/file.c b/dlls/kernelbase/file.c
index 42c47707582..f4f9d14518f 100644
--- a/dlls/kernelbase/file.c
+++ b/dlls/kernelbase/file.c
@@ -487,13 +487,15 @@ BOOL WINAPI DECLSPEC_HOTPATCH AreFileApisANSI(void)
     return !oem_file_apis;
 }
 
-
-/***********************************************************************
- *	CopyFileExW   (kernelbase.@)
+/******************************************************************************
+ *  copy_file
  */
-BOOL WINAPI CopyFileExW( const WCHAR *source, const WCHAR *dest, LPPROGRESS_ROUTINE progress,
-                         void *param, BOOL *cancel_ptr, DWORD flags )
+static BOOL copy_file( const WCHAR *source, const WCHAR *dest, COPYFILE2_EXTENDED_PARAMETERS *params )
 {
+    DWORD flags = params ? params->dwCopyFlags : 0;
+    BOOL *cancel_ptr = params ? params->pfCancel : NULL;
+    PCOPYFILE2_PROGRESS_ROUTINE progress = params ? params->pProgressRoutine : NULL;
+
     static const int buffer_size = 65536;
     HANDLE h1, h2;
     FILE_BASIC_INFORMATION info;
@@ -502,6 +504,11 @@ BOOL WINAPI CopyFileExW( const WCHAR *source, const WCHAR *dest, LPPROGRESS_ROUT
     BOOL ret = FALSE;
     char *buffer;
 
+    if (cancel_ptr)
+        FIXME("pfCancel is not supported\n");
+    if (progress)
+        FIXME("PCOPYFILE2_PROGRESS_ROUTINE is not supported\n");
+
     if (!source || !dest)
     {
         SetLastError( ERROR_INVALID_PARAMETER );
@@ -577,7 +584,7 @@ BOOL WINAPI CopyFileExW( const WCHAR *source, const WCHAR *dest, LPPROGRESS_ROUT
             count -= res;
         }
     }
-    ret =  TRUE;
+    ret = TRUE;
 done:
     /* Maintain the timestamp of source file to destination file */
     info.FileAttributes = 0;
@@ -589,6 +596,37 @@ BOOL WINAPI CopyFileExW( const WCHAR *source, const WCHAR *dest, LPPROGRESS_ROUT
     return ret;
 }
 
+/***********************************************************************
+ *	CopyFile2   (kernelbase.@)
+ */
+HRESULT WINAPI CopyFile2( const WCHAR *source, const WCHAR *dest, COPYFILE2_EXTENDED_PARAMETERS *params )
+{
+    return copy_file(source, dest, params) ? S_OK : HRESULT_FROM_WIN32(GetLastError());
+}
+
+
+/***********************************************************************
+ *	CopyFileExW   (kernelbase.@)
+ */
+BOOL WINAPI CopyFileExW( const WCHAR *source, const WCHAR *dest, LPPROGRESS_ROUTINE progress,
+                         void *param, BOOL *cancel_ptr, DWORD flags )
+{
+    COPYFILE2_EXTENDED_PARAMETERS params;
+
+    if (progress)
+        FIXME("LPPROGRESS_ROUTINE is not supported\n");
+    if (cancel_ptr)
+        FIXME("cancel_ptr is not supported\n");
+
+    params.dwSize = sizeof(params);
+    params.dwCopyFlags = flags;
+    params.pProgressRoutine = NULL;
+    params.pvCallbackContext = NULL;
+    params.pfCancel = NULL;
+
+    return copy_file( source, dest, &params );
+}
+
 
 /**************************************************************************
  *	CopyFileW   (kernelbase.@)
diff --git a/dlls/kernelbase/kernelbase.spec b/dlls/kernelbase/kernelbase.spec
index 62b3b4d0488..a710372fcc0 100644
--- a/dlls/kernelbase/kernelbase.spec
+++ b/dlls/kernelbase/kernelbase.spec
@@ -168,7 +168,7 @@
 @ stdcall ConvertThreadToFiberEx(ptr long)
 @ stdcall ConvertToAutoInheritPrivateObjectSecurity(ptr ptr ptr ptr long ptr)
 @ stdcall CopyContext(ptr long ptr)
-# @ stub CopyFile2
+@ stdcall CopyFile2(wstr wstr ptr)
 @ stdcall CopyFileExW(wstr wstr ptr ptr ptr long)
 @ stdcall CopyFileW(wstr wstr long)
 @ stdcall -arch=x86_64 CopyMemoryNonTemporal(ptr ptr long) ntdll.RtlCopyMemoryNonTemporal