From 2b0d1faaa95da9c003efb809f488290f3e6313cd Mon Sep 17 00:00:00 2001
From: Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
Date: Wed, 15 May 2024 01:23:30 +0900
Subject: [PATCH] [WORDPAD] Use FILE_SHARE_READ and OPEN_ALWAYS for writing
 (#6883)

Follow-up to #6880. Fix access denial on
writing file "C:\freeldr.ini".
JIRA issue: CORE-19575
- Add FILE_SHARE_READ flag in CreateFileW
  call.
- Use OPEN_ALWAYS instead of
  CREATE_ALWAYS, and then explicitly use
  SetEndOfFile function.
---
 base/applications/wordpad/wordpad.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/base/applications/wordpad/wordpad.c b/base/applications/wordpad/wordpad.c
index 1c0b820308a..85a9be92223 100644
--- a/base/applications/wordpad/wordpad.c
+++ b/base/applications/wordpad/wordpad.c
@@ -843,8 +843,15 @@ static BOOL DoSaveFile(LPCWSTR wszSaveFileName, WPARAM format)
     EDITSTREAM stream;
     LRESULT ret;
 
+#ifdef __REACTOS__
+    /* Use OPEN_ALWAYS instead of CREATE_ALWAYS in order to succeed
+     * even if the file has HIDDEN or SYSTEM attributes */
+    hFile = CreateFileW(wszSaveFileName, GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_ALWAYS,
+        FILE_ATTRIBUTE_NORMAL, NULL);
+#else
     hFile = CreateFileW(wszSaveFileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
         FILE_ATTRIBUTE_NORMAL, NULL);
+#endif
 
     if(hFile == INVALID_HANDLE_VALUE)
     {
@@ -870,6 +877,10 @@ static BOOL DoSaveFile(LPCWSTR wszSaveFileName, WPARAM format)
 
     ret = SendMessageW(hEditorWnd, EM_STREAMOUT, format, (LPARAM)&stream);
 
+#ifdef __REACTOS__
+    /* Truncate the file and close it */
+    SetEndOfFile(hFile);
+#endif
     CloseHandle(hFile);
 
     SetFocus(hEditorWnd);