/* $NetBSD: exec_coff.c,v 1.7 2009/08/20 17:39:51 he Exp $ */

/*
* Copyright (c) 1997 Christopher G. Demetriou
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*          This product includes software developed for the
*          NetBSD Project.  See http://www.NetBSD.org/ for
*          information about NetBSD.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
*/

#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: exec_coff.c,v 1.7 2009/08/20 17:39:51 he Exp $");
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "extern.h"

#if defined(NLIST_COFF)

#include <sys/exec_coff.h>

int
check_coff(int fd, const char *filename)
{
       struct coff_filehdr fh;
       struct stat sb;

       /*
        * Check the header to make sure it's an COFF file (of the
        * appropriate size).
        */
       if (fstat(fd, &sb) == -1)
               return 0;
       if (sb.st_size > SIZE_T_MAX)
               return 0;
       if (read(fd, &fh, sizeof fh) != sizeof fh)
               return 0;

       if (COFF_BADMAG(&fh))
               return 0;

       return 1;
}

int
hide_coff(int fd, const char *filename)
{

       fprintf(stderr, "%s: COFF executables not currently supported\n",
               filename);
       return 1;
}

#endif /* defined(NLIST_COFF) */