/**************************************************************************** * * 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: low level lseek without file extend for Windows NT * ****************************************************************************/ #include "variety.h" #include <stdio.h> #include <unistd.h> #include "iomode.h" #include "rtcheck.h" #include "seterrno.h" #include "lseek.h" #include "handleio.h" #include "kolibri.h" #ifndef INVALID_SET_FILE_POINTER #define INVALID_SET_FILE_POINTER 0xFFFFFFFF #endif typedef struct { char *name; unsigned int offset; }__file_handle; _WCRTLINK long __lseek( int hid, long offset, int origin ) { __file_handle *fh; long rc; __handle_check( hid, -1 ); fh = (__file_handle*) __getOSHandle( hid ); switch(origin) { case SEEK_SET: rc = offset; break; case SEEK_CUR: rc = fh->offset + offset; break; case SEEK_END: { FILEINFO info; get_fileinfo(fh->name,&info); rc = offset + info.size; break; } default: return -1; }; fh->offset = rc; return( rc ); }