Alexandre Julliard : ntdll: Make sure that serial ioctl calls fail on non-serial handles.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 72241b5d47ddd5a4373f206502e876e7ef13683d
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=72241b5d47ddd5a4373f206502e876e7ef13683d

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Thu Sep 10 11:06:01 2009 +0200

ntdll: Make sure that serial ioctl calls fail on non-serial handles.

---

 dlls/kernel32/tests/comm.c |   10 ++++++++++
 dlls/ntdll/serial.c        |   11 ++++++++++-
 2 files changed, 20 insertions(+), 1 deletions(-)

diff --git a/dlls/kernel32/tests/comm.c b/dlls/kernel32/tests/comm.c
index 2fb95cd..3d0d17b 100644
--- a/dlls/kernel32/tests/comm.c
+++ b/dlls/kernel32/tests/comm.c
@@ -1643,6 +1643,15 @@ static void  test_WaitBreak(HANDLE hcom)
     ok(ClearCommBreak(hcom), "ClearCommBreak failed\n");
 }
 
+static void test_stdio(void)
+{
+    DCB dcb;
+
+    /* cygwin tries this to determine the stdin handle type */
+    ok( !GetCommState( GetStdHandle(STD_INPUT_HANDLE), &dcb ), "GetCommState succeeded on stdin\n" );
+    ok( GetLastError() == ERROR_INVALID_HANDLE, "got error %u\n", GetLastError() );
+}
+
 START_TEST(comm)
 {
     HANDLE hcom;
@@ -1735,4 +1744,5 @@ START_TEST(comm)
 	test_WaitBreak(hcom);
 	CloseHandle(hcom);
     }
+    test_stdio();
 }
diff --git a/dlls/ntdll/serial.c b/dlls/ntdll/serial.c
index 2aff6fc..1936428 100644
--- a/dlls/ntdll/serial.c
+++ b/dlls/ntdll/serial.c
@@ -1110,8 +1110,17 @@ static inline NTSTATUS io_control(HANDLE hDevice,
 
     if (dwIoControlCode != IOCTL_SERIAL_GET_TIMEOUTS &&
         dwIoControlCode != IOCTL_SERIAL_SET_TIMEOUTS)
-        if ((status = server_get_unix_fd( hDevice, access, &fd, &needs_close, NULL, NULL )))
+    {
+        enum server_fd_type type;
+        if ((status = server_get_unix_fd( hDevice, access, &fd, &needs_close, &type, NULL )))
+            goto error;
+        if (type != FD_TYPE_SERIAL)
+        {
+            if (needs_close) close( fd );
+            status = STATUS_OBJECT_TYPE_MISMATCH;
             goto error;
+        }
+    }
 
     switch (dwIoControlCode)
     {