[PATCH] ntdll: Fix handling of DOS style device paths in RtlIsDosDeviceName_U

[Lukas Platz]

Use existing general processing code instead of hardcoding a
less general result.

Signed-off-by: Lukas Platz <lukas.platz at bluescan.de>
---
 dlls/ntdll/path.c       | 6 ++----
 dlls/ntdll/tests/path.c | 1 +
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/dlls/ntdll/path.c b/dlls/ntdll/path.c
index 11483fabba..c41dc81a20 100644
--- a/dlls/ntdll/path.c
+++ b/dlls/ntdll/path.c
@@ -268,7 +268,6 @@ DOS_PATHNAME_TYPE WINAPI RtlDetermineDosPathNameType_U( PCWSTR path )
  */
 ULONG WINAPI RtlIsDosDeviceName_U( PCWSTR dos_name )
 {
-    static const WCHAR consoleW[] = {'\\','\\','.','\\','C','O','N',0};
     static const WCHAR auxW[] = {'A','U','X'};
     static const WCHAR comW[] = {'C','O','M'};
     static const WCHAR conW[] = {'C','O','N'};
@@ -284,9 +283,8 @@ ULONG WINAPI RtlIsDosDeviceName_U( PCWSTR dos_name )
     case UNC_PATH:
         return 0;
     case DEVICE_PATH:
-        if (!strcmpiW( dos_name, consoleW ))
-            return MAKELONG( sizeof(conW), 4 * sizeof(WCHAR) );  /* 4 is length of \\.\ prefix */
-        return 0;
+        start = dos_name + 4;  /* skip device path prefix */
+        break;
     case ABSOLUTE_DRIVE_PATH:
     case RELATIVE_DRIVE_PATH:
         start = dos_name + 2;  /* skip drive letter */
diff --git a/dlls/ntdll/tests/path.c b/dlls/ntdll/tests/path.c
index 195dea37e8..e744c10649 100644
--- a/dlls/ntdll/tests/path.c
+++ b/dlls/ntdll/tests/path.c
@@ -114,6 +114,7 @@ static void test_RtlIsDosDeviceName_U(void)
         { "\\\\.\\CON",    8, 6, TRUE },  /* fails on win8 */
         { "\\\\.\\con",    8, 6, TRUE },  /* fails on win8 */
         { "\\\\.\\CON2",   0, 0 },
+        { "\\\\.\\com3",   8, 8 },
         { "",              0, 0 },
         { "\\\\foo\\nul",  0, 0 },
         { "c:\\nul:",      6, 6 },
-- 
2.18.0