Started piping implementation.

[reactos.git] / reactos / lib / msvcrt / io / dup.c

diff --git a/reactos/lib/msvcrt/io/dup.c b/reactos/lib/msvcrt/io/dup.c
index 9364791..d677901 100644 (file)
--- a/reactos/lib/msvcrt/io/dup.c
+++ b/reactos/lib/msvcrt/io/dup.c
@@ -1,8 +1,33 @@
+/* $Id: dup.c,v 1.2 2002/05/07 22:31:25 hbirr Exp $ */
+#include <windows.h>
 #include <msvcrt/io.h>
 #include <msvcrt/internal/file.h>
 
 
 int _dup(int handle)
 {
-  return __fileno_alloc(_get_osfhandle(handle), __fileno_getmode(handle));
+  HANDLE hFile;
+  HANDLE hProcess = GetCurrentProcess();
+  BOOL result;
+  int fd;
+  
+  hFile = _get_osfhandle(handle);
+  if (hFile == INVALID_HANDLE_VALUE)
+         return -1;
+  result = DuplicateHandle(hProcess, 
+                          hFile, 
+                          hProcess, 
+                          &hFile, 
+                          0, 
+                          TRUE, 
+                          DUPLICATE_SAME_ACCESS);
+  if (result == FALSE)
+         return -1;
+
+  fd = __fileno_alloc(hFile, __fileno_getmode(handle));
+  if (fd < 0)
+  {
+         CloseHandle(hFile);
+  }
+  return fd;
 }