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kernelbase: Save registry keys directly to the destination file. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2019-12-12 11:16:59 +01:00
parent d5449a8905
commit 2d0e8ff672
1 changed files with 15 additions and 36 deletions
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51
dlls/kernelbase/registry.c
View File

@ -2263,12 +2263,10 @@ LSTATUS WINAPI RegLoadKeyA( HKEY hkey, LPCSTR subkey, LPCSTR filename )
*/
LSTATUS WINAPI RegSaveKeyExW( HKEY hkey, LPCWSTR file, SECURITY_ATTRIBUTES *sa, DWORD flags )
{
static const WCHAR format[] =
{'r','e','g','%','0','4','x','.','t','m','p',0};
WCHAR buffer[MAX_PATH];
int count = 0;
LPWSTR nameW;
DWORD ret, err;
UNICODE_STRING nameW;
OBJECT_ATTRIBUTES attr;
IO_STATUS_BLOCK io;
NTSTATUS status;
HANDLE handle;
TRACE( "(%p,%s,%p)\n", hkey, debugstr_w(file), sa );
@ -2276,39 +2274,20 @@ LSTATUS WINAPI RegSaveKeyExW( HKEY hkey, LPCWSTR file, SECURITY_ATTRIBUTES *sa,
if (!file || !*file) return ERROR_INVALID_PARAMETER;
if (!(hkey = get_special_root_hkey( hkey, 0 ))) return ERROR_INVALID_HANDLE;
err = GetLastError();
GetFullPathNameW( file, ARRAY_SIZE( buffer ), buffer, &nameW );
if ((status = RtlDosPathNameToNtPathName_U_WithStatus( file, &nameW, NULL, NULL )))
return RtlNtStatusToDosError( status );
for (;;)
InitializeObjectAttributes( &attr, &nameW, OBJ_CASE_INSENSITIVE, 0, sa );
status = NtCreateFile( &handle, GENERIC_WRITE | SYNCHRONIZE, &attr, &io, NULL, FILE_NON_DIRECTORY_FILE,
FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_OVERWRITE_IF,
FILE_SYNCHRONOUS_IO_NONALERT, NULL, 0 );
RtlFreeUnicodeString( &nameW );
if (!status)
{
swprintf( nameW, 16, format, count++ );
handle = CreateFileW( buffer, GENERIC_WRITE, 0, NULL,
CREATE_NEW, FILE_ATTRIBUTE_NORMAL, 0 );
if (handle != INVALID_HANDLE_VALUE) break;
if ((ret = GetLastError()) != ERROR_FILE_EXISTS) goto done;
/* Something gone haywire ? Please report if this happens abnormally */
if (count >= 100)
MESSAGE("Wow, we are already fiddling with a temp file %s with an ordinal as high as %d !\nYou might want to delete all corresponding temp files in that directory.\n", debugstr_w(buffer), count);
status = NtSaveKey( hkey, handle );
CloseHandle( handle );
}
ret = RtlNtStatusToDosError(NtSaveKey(hkey, handle));
CloseHandle( handle );
if (!ret)
{
if (!MoveFileExW( buffer, file, MOVEFILE_REPLACE_EXISTING ))
{
ERR( "Failed to move %s to %s\n", debugstr_w(buffer),
debugstr_w(file) );
ret = GetLastError();
}
}
if (ret) DeleteFileW( buffer );
done:
SetLastError( err ); /* restore last error code */
return ret;
return RtlNtStatusToDosError( status );
}