[RFC][HELP][PATCH v6] kernel32: Correct ReplaceFileW behaviour

[Brock York]

The following patch does correct the behaviours I was trying to fix
and now the tests I modified/added work as expected it also
removes the low level checks that Dmitry wasn't happy about in
the v5 attempt but seems inellegant so I'm hoping for some feedback
on what I should really do.

--------BEGIN ACTUAL PATCH-------------------------------------------

ReplaceFileW should fail with ERROR_ACCESS_DENIED when either the replaced
or replacement file is set to read only using SetFileAttributes.
Testing for the return values of ReplaceFileW was performed on a
Windows XP SP3 and Windows 10 vm.

Open replaced file without GENERIC_WRITE flag if a sharing violation is
returned on the first call checking for the READ_ONLY attribute.
ReplaceFileW should not fail when called to replace the current executable which
is the case as tested on Windows 7, 10 and XP this is because the
"replaced" file is opened with the GENERIC_WRITE flag.
The MSDN also mentions that the replaced file is only opened with
GENERIC_READ, DELETE and SYNCHRONIZE.

This patch will fix the following bug once it is
merged into Wine-Staging as the WarFrame launcher
requires patches from Wine-Staging to work.
Wine-Bug:https://bugs.winehq.org/show_bug.cgi?id=33845

Signed-off-by: Brock York <twunknown at gmail.com>
---
 dlls/kernel32/file.c       | 15 +++++++++++++--
 dlls/kernel32/tests/file.c |  4 ++--
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/dlls/kernel32/file.c b/dlls/kernel32/file.c
index 081f0760a5..485cc8c96a 100644
--- a/dlls/kernel32/file.c
+++ b/dlls/kernel32/file.c
@@ -1764,7 +1764,7 @@ BOOL WINAPI ReplaceFileW(LPCWSTR lpReplacedFileName, LPCWSTR lpReplacementFileNa
     attr.SecurityDescriptor = NULL;
     attr.SecurityQualityOfService = NULL;
 
-    /* Open the "replaced" file for reading and writing */
+    /* Open the "replaced" file for reading and writing to check for READ_ONLY attribute */
     if (!(RtlDosPathNameToNtPathName_U(lpReplacedFileName, &nt_replaced_name, NULL, NULL)))
     {
         error = ERROR_PATH_NOT_FOUND;
@@ -1776,6 +1776,12 @@ BOOL WINAPI ReplaceFileW(LPCWSTR lpReplacedFileName, LPCWSTR lpReplacementFileNa
                         &attr, &io,
                         FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
                         FILE_SYNCHRONOUS_IO_NONALERT|FILE_NON_DIRECTORY_FILE);
+    /*If we didn't get ACCESS_DENIED, then open the file for reading and delete ready for the replacement*/
+    if (status == STATUS_SHARING_VIOLATION)
+	status = NtOpenFile(&hReplaced, GENERIC_READ|DELETE|SYNCHRONIZE,
+			&attr, &io,
+			FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
+			FILE_SYNCHRONOUS_IO_NONALERT|FILE_NON_DIRECTORY_FILE);
     if (status == STATUS_SUCCESS)
         status = wine_nt_to_unix_file_name(&nt_replaced_name, &unix_replaced_name, replaced_flags, FALSE);
     RtlFreeUnicodeString(&nt_replaced_name);
@@ -1783,6 +1789,8 @@ BOOL WINAPI ReplaceFileW(LPCWSTR lpReplacedFileName, LPCWSTR lpReplacementFileNa
     {
         if (status == STATUS_OBJECT_NAME_NOT_FOUND)
             error = ERROR_FILE_NOT_FOUND;
+	else if (status == STATUS_ACCESS_DENIED)
+            error = ERROR_ACCESS_DENIED;
         else
             error = ERROR_UNABLE_TO_REMOVE_REPLACED;
         goto fail;
@@ -1807,7 +1815,10 @@ BOOL WINAPI ReplaceFileW(LPCWSTR lpReplacedFileName, LPCWSTR lpReplacementFileNa
     RtlFreeUnicodeString(&nt_replacement_name);
     if (status != STATUS_SUCCESS)
     {
-        error = RtlNtStatusToDosError(status);
+	if (status == STATUS_ACCESS_DENIED)
+	    error = ERROR_ACCESS_DENIED;
+	else
+	    error = RtlNtStatusToDosError(status);
         goto fail;
     }
 
diff --git a/dlls/kernel32/tests/file.c b/dlls/kernel32/tests/file.c
index 33cae4b7c4..8e4a994142 100644
--- a/dlls/kernel32/tests/file.c
+++ b/dlls/kernel32/tests/file.c
@@ -3666,7 +3666,7 @@ static void test_ReplaceFileA(void)
      */
     SetLastError(0xdeadbeef);
     ret = pReplaceFileA(replaced, replacement, backup, 0, 0, 0);
-    todo_wine ok(ret == 0 && GetLastError() == ERROR_ACCESS_DENIED, "ReplaceFileA: unexpected error %d\n", GetLastError());
+    ok(ret == 0 && GetLastError() == ERROR_ACCESS_DENIED, "ReplaceFileA: unexpected error %d\n", GetLastError());
     /* make sure that the replacement file still exists */
     hReplacementFile = CreateFileA(replacement, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
     ok(hReplacementFile != INVALID_HANDLE_VALUE ||
@@ -3698,7 +3698,7 @@ static void test_ReplaceFileA(void)
        "unexpected error, replaced file should be able to be opened %d\n", GetLastError());
     /*Calling ReplaceFileA on an exe should succeed*/
     ret = pReplaceFileA(replaced, replacement, NULL, 0, 0, 0);
-    todo_wine ok(ret, "ReplaceFileA: unexpected error %d\n", GetLastError());
+    ok(ret, "ReplaceFileA: unexpected error %d\n", GetLastError());
     CloseHandle(hReplacedFile);
 
     /* replacement file still exists, make pass w/o "replaced" */
-- 
2.19.0