/* ********************************************************************** *\
 *         Copyright IBM Corporation 1988,1991 - All Rights Reserved      *
 *        For full copyright information see:'andrew/config/COPYRITE'     *
\* ********************************************************************** */

/*
	$Disclaimer: 
 * Permission to use, copy, modify, and distribute this software and its 
 * documentation for any purpose is hereby granted without fee, 
 * provided that the above copyright notice appear in all copies and that 
 * both that copyright notice, this permission notice, and the following 
 * disclaimer appear in supporting documentation, and that the names of 
 * IBM, Carnegie Mellon University, and other copyright holders, not be 
 * used in advertising or publicity pertaining to distribution of the software 
 * without specific, written prior permission.
 * 
 * IBM, CARNEGIE MELLON UNIVERSITY, AND THE OTHER COPYRIGHT HOLDERS 
 * DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 
 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT 
 * SHALL IBM, CARNEGIE MELLON UNIVERSITY, OR ANY OTHER COPYRIGHT HOLDER 
 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY 
 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 
 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
 * OF THIS SOFTWARE.
 *  $
*/

#ifndef NORCSID
#define NORCSID
static char rcsid[]="$Header: /afs/cs.cmu.edu/project/atk-dist/auis-6.3/ams/libs/ms/RCS/storfile.c,v 2.9 1993/08/25 20:36:15 susan Exp $";
#endif

#include <stdio.h>
#include <ms.h>
#include <andrewos.h> /* sys/file.h */

MS_StorePartialFile(FileName, startpos, len, mode, Truncate, WhatToStore)
char *FileName, *WhatToStore;
int startpos, len, mode, Truncate;
{
    int fd, errsave;

    debug(1, ("MS_StorePartialFile %s pos %d len %d mode %d\n", FileName, startpos, len, mode));
    fd = open(FileName, O_RDWR | O_CREAT, mode);
    if (fd<0) {
	AMS_RETURN_ERRCODE(errno, EIN_OPEN, EVIA_STOREPARTIALFILE);
    }
    if (startpos>0 && lseek(fd, startpos, L_SET) < 0) {
	errsave = errno;
	vclose(fd);
	if ((startpos == 0) && Truncate) unlink(FileName);
	AMS_RETURN_ERRCODE(errsave, EIN_LSEEK, EVIA_STOREPARTIALFILE);
    }
    if (writeall(fd, WhatToStore, len) < 0) {
	errsave = errno;
	vclose(fd); /* BOGUS -- should somehow ABORT the Vice store */
	if ((startpos == 0) && Truncate) unlink(FileName);
	AMS_RETURN_ERRCODE(errsave, EIN_WRITE, EVIA_STOREPARTIALFILE);
    }
    if (Truncate && ftruncate(fd, startpos + len)) {
	errsave = errno;
	vclose(fd); /* BOGUS -- should somehow ABORT the Vice store */
	if ((startpos == 0) && Truncate) unlink(FileName);
	AMS_RETURN_ERRCODE(errsave, EIN_FTRUNCATE, EVIA_STOREPARTIALFILE);
    }
    if (vclose(fd)) {
	errsave = errno;
	if ((startpos == 0) && Truncate) unlink(FileName);
	AMS_RETURN_ERRCODE(errsave, EIN_VCLOSE, EVIA_STOREPARTIALFILE);
    }
    return(0);
}