usr.bin/crunch/crunchide/exec_coff.c

   1 /* $NetBSD: exec_coff.c,v 1.6 2003/07/26 20:34:12 salo Exp $ */
   2
   3 /*
   4  * Copyright (c) 1997 Christopher G. Demetriou
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *          This product includes software developed for the
  18  *          NetBSD Project.  See http://www.NetBSD.org/ for
  19  *          information about NetBSD.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
  35  */
  36
  37 #include <sys/cdefs.h>
  38 #ifndef lint
  39 __RCSID("$NetBSD: exec_coff.c,v 1.6 2003/07/26 20:34:12 salo Exp $");
  40 #endif
  41
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <unistd.h>
  46 #include <errno.h>
  47 #include <limits.h>
  48 #include <sys/types.h>
  49 #include <sys/stat.h>
  50
  51 #include "extern.h"
  52
  53 #if defined(NLIST_COFF)
  54
  55 #include <sys/exec_coff.h>
  56
  57 int
  58 check_coff(int fd, const char *filename)
  59 {
  60         struct coff_filehdr fh;
  61         struct stat sb;
  62
  63         /*
  64          * Check the header to make sure it's an COFF file (of the
  65          * appropriate size).
  66          */
  67         if (fstat(fd, &sb) == -1)
  68                 return 0;
  69         if (sb.st_size > SIZE_T_MAX)
  70                 return 0;
  71         if (read(fd, &fh, sizeof fh) != sizeof fh)
  72                 return 0;
  73
  74         if (COFF_BADMAG(&fh))
  75                 return 0;
  76
  77         return 1;
  78 }
  79
  80 int
  81 hide_coff(int fd, const char *filename)
  82 {
  83
  84         fprintf(stderr, "%s: COFF executables not currently supported\n",
  85                 filename);
  86         return 1;
  87 }
  88
  89 #endif /* defined(NLIST_COFF) */