- Allow always shared read for a file which is opened for read only.

reactos/lib/msvcrt/io

diff -u -r1.18 -r1.19
--- open.c	15 Aug 2004 18:16:36 -0000	1.18
+++ open.c	31 Aug 2004 20:07:06 -0000	1.19
@@ -1,4 +1,4 @@

-/* $Id: open.c,v 1.18 2004/08/15 18:16:36 chorns Exp $

+/* $Id: open.c,v 1.19 2004/08/31 20:07:06 hbirr Exp $

  *
  * COPYRIGHT:   See COPYING in the top level directory
  * PROJECT:     ReactOS system libraries

@@ -141,11 +141,6 @@

    else //if ((_oflag & O_RDONLY) == O_RDONLY)
      dwDesiredAccess |= GENERIC_READ;
 #endif

-   if (( _oflag & S_IREAD ) == S_IREAD)
-     dwShareMode |= FILE_SHARE_READ;
-   
-   if (( _oflag & S_IWRITE ) == S_IWRITE)
-     dwShareMode |= FILE_SHARE_WRITE;

 
    if (( _oflag & (_O_CREAT | _O_EXCL)) == (_O_CREAT | _O_EXCL))
      dwCreationDistribution |= CREATE_NEW;

@@ -177,6 +172,13 @@

    }
    if (_oflag & _O_NOINHERIT)
      sa.bInheritHandle = FALSE;

+
+   if (dwCreationDistribution == OPEN_EXISTING &&
+       (dwDesiredAccess & (GENERIC_WRITE|GENERIC_READ)) == GENERIC_READ) {
+      /* Allow always shared read for a file which is opened for read only */
+      dwShareMode |= FILE_SHARE_READ;
+   }
+

    hFile = CreateFileA(_path,
                dwDesiredAccess,
                dwShareMode,