From: Jacek Caban <jacek@codeweavers.com>
Subject: [PATCH 1/2] ntdll: Fix handling \\.\CON path in RtlDosPathNameToNtPathName.
Message-Id: <126a9774-9dca-841b-7069-cbd241d95aec@codeweavers.com>
Date: Thu, 30 Dec 2021 15:49:38 +0100


Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=32183
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
---
It seems to be a special case, like in RtlIsDosDeviceName_U.

  dlls/ntdll/path.c       |  4 +++-
  dlls/ntdll/tests/path.c | 12 ++++++++++++
  2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/path.c b/dlls/ntdll/path.c
index 47196067cd4..cccd000a6c6 100644
--- a/dlls/ntdll/path.c
+++ b/dlls/ntdll/path.c
@@ -197,7 +197,8 @@ NTSTATUS WINAPI RtlDosPathNameToNtPathName_U_WithStatus(const WCHAR *dos_path, U
         return STATUS_OBJECT_NAME_INVALID;
 
     if (!memcmp(dos_path, global_prefix, sizeof(global_prefix)) ||
-        (!memcmp(dos_path, global_prefix2, sizeof(global_prefix2)) && dos_path[4]))
+        (!memcmp(dos_path, global_prefix2, sizeof(global_prefix2)) && dos_path[4]) ||
+        !wcsicmp( dos_path, L"\\\\.\\CON" ))
     {
         ntpath->Length = wcslen(dos_path) * sizeof(WCHAR);
         ntpath->MaximumLength = ntpath->Length + sizeof(WCHAR);
@@ -205,6 +206,7 @@ NTSTATUS WINAPI RtlDosPathNameToNtPathName_U_WithStatus(const WCHAR *dos_path, U
         if (!ntpath->Buffer) return STATUS_NO_MEMORY;
         memcpy( ntpath->Buffer, dos_path, ntpath->MaximumLength );
         ntpath->Buffer[1] = '?';  /* change \\?\ to \??\ */
+        ntpath->Buffer[2] = '?';
         if (file_part)
         {
             if ((ptr = wcsrchr( ntpath->Buffer, '\\' )) && ptr[1]) *file_part = ptr + 1;
diff --git a/dlls/ntdll/tests/path.c b/dlls/ntdll/tests/path.c
index dba889fdec7..e9cb0199876 100644
--- a/dlls/ntdll/tests/path.c
+++ b/dlls/ntdll/tests/path.c
@@ -120,6 +120,8 @@ static void test_RtlIsDosDeviceName_U(void)
         { "\\\\.\\CON",    8, 6, TRUE },  /* fails on win8 */
         { "\\\\.\\con",    8, 6, TRUE },  /* fails on win8 */
         { "\\\\.\\CON2",   0, 0 },
+        { "\\\\.\\CONIN$", 0, 0 },
+        { "\\\\.\\CONOUT$",0, 0 },
         { "",              0, 0 },
         { "\\\\foo\\nul",  0, 0 },
         { "c:\\nul:",      6, 6 },
@@ -435,6 +437,7 @@ static void test_RtlDosPathNameToNtPathName_U(void)
         const WCHAR *nt;
         int file_offset;    /* offset to file part */
         const WCHAR *alt_nt;
+        BOOL may_fail;
     }
     tests[] =
     {
@@ -558,6 +561,10 @@ static void test_RtlDosPathNameToNtPathName_U(void)
         {L"CONOUT$",        L"\\??\\CONOUT$",               -1, L"\\??\\C:\\windows\\CONOUT$" /* winxp */ },
         {L"cOnOuT$",        L"\\??\\cOnOuT$",               -1, L"\\??\\C:\\windows\\cOnOuT$" /* winxp */ },
         {L"CONERR$",        L"\\??\\C:\\windows\\CONERR$",  15},
+        {L"\\\\.\\foo",     L"\\??\\foo",                    4},
+        {L"\\\\.\\CON",     L"\\??\\CON",                    4, NULL, TRUE}, /* broken on win7 */
+        {L"\\\\.\\CONIN$",  L"\\??\\CONIN$",                 4},
+        {L"\\\\.\\CONOUT$", L"\\??\\CONOUT$",                4},
     };
     static const WCHAR *error_paths[] = {
         NULL, L"", L" ", L"C:\\nonexistent\\nul", L"C:\\con\\con"
@@ -586,6 +593,11 @@ static void test_RtlDosPathNameToNtPathName_U(void)
     for (i = 0; i < ARRAY_SIZE(tests); ++i)
     {
         ret = pRtlDosPathNameToNtPathName_U(tests[i].dos, &nameW, &file_part, NULL);
+        if (!ret && tests[i].may_fail)
+        {
+            win_skip("skipping broken %s\n", debugstr_w(tests[i].dos));
+            continue;
+        }
         ok(ret == TRUE, "%s: Got %d.\n", debugstr_w(tests[i].dos), ret);
 
         if (pRtlDosPathNameToNtPathName_U_WithStatus)