Clib chsize, fstat, setmode.

set_file_size: watcom-specific implementation git-svn-id: svn://kolibrios.org@727 a494cfbc-eb01-0410-851d-a64ba20cac60
2008-02-10 14:10:44 +00:00
parent 26580c8bd1
commit a73bea0da8
9 changed files with 481 additions and 44 deletions
--- a/watcom/trunk/clib/handleio/setmd.c
+++ b/watcom/trunk/clib/handleio/setmd.c
@@ -0,0 +1,91 @@
+/****************************************************************************
+*
+*                            Open Watcom Project
+*
+*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
+*
+*  ========================================================================
+*
+*    This file contains Original Code and/or Modifications of Original
+*    Code as defined in and that are subject to the Sybase Open Watcom
+*    Public License version 1.0 (the 'License'). You may not use this file
+*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
+*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
+*    provided with the Original Code and Modifications, and is also
+*    available at www.sybase.com/developer/opensource.
+*
+*    The Original Code and all software distributed under the License are
+*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
+*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
+*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
+*    NON-INFRINGEMENT. Please see the License for the specific language
+*    governing rights and limitations under the License.
+*
+*  ========================================================================
+*
+* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
+*               DESCRIBE IT HERE!
+*
+****************************************************************************/
+
+
+#include "variety.h"
+#include <stdio.h>
+#include <errno.h>
+#if defined(__NT__)
+ //   #include <windows.h>
+#endif
+#include <unistd.h>
+#include "fcntl.h"
+#include "dos.h"
+#include "dosfunc.h"
+#include "fileacc.h"
+#include "rtcheck.h"
+#include "rtdata.h"
+#include "iomode.h"
+#include "seterrno.h"
+
+_WCRTLINK int setmode( int handle, int mode )
+{
+    unsigned        iomode_flags;
+    unsigned        old_mode;
+    __stream_link   *link;
+    FILE            *fp;
+
+    __handle_check( handle, -1 );
+
+    iomode_flags = __GetIOMode( handle );
+    if( iomode_flags == 0 ) {
+        __set_errno( EBADF );
+        return( -1 );
+    }
+    old_mode = (iomode_flags & _BINARY) ? O_BINARY : O_TEXT;
+    if( mode != old_mode ) {
+        if( mode == O_BINARY  ||  mode == O_TEXT ) {
+            iomode_flags &= ~ _BINARY;
+            if( mode == O_BINARY ) {
+                iomode_flags |= _BINARY;
+            }
+            __SetIOMode( handle, iomode_flags );
+            _AccessFileH( handle );
+            for( link = _RWD_ostream; link != NULL; link = link->next ) {
+                fp = link->stream;
+                if( fp->_flag != 0 ) {      /* if file is open */
+                    if( fileno( fp ) == handle ) {
+                        fp->_flag &= ~ _BINARY;
+                        if( mode == O_BINARY ) {
+                            fp->_flag |= _BINARY;
+                        }
+                        break;
+                    }
+                }
+            }
+            _ReleaseFileH( handle );
+        } else {
+            __set_errno( EINVAL );
+            old_mode = -1;
+        }
+    }
+    return( old_mode );
+}