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exec_coff.c revision 1.2 
      1 /*	$NetBSD: exec_coff.c,v 1.2 2000/01/07 09:40:34 msaitoh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 Christopher G. Demetriou.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *      This product includes software developed by Christopher G. Demetriou
     17  *	for the NetBSD Project.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 #ifndef lint
     35 __RCSID("$NetBSD: exec_coff.c,v 1.2 2000/01/07 09:40:34 msaitoh Exp $");
     36 #endif
     37 
     38 #include <stdio.h>
     39 #include <stdlib.h>
     40 #include <string.h>
     41 #include <unistd.h>
     42 #include <errno.h>
     43 #include <a.out.h>
     44 #include <sys/types.h>
     45 #include <sys/stat.h>
     46 
     47 #include "extern.h"
     48 
     49 #if defined(NLIST_COFF)
     50 
     51 #include <sys/exec_coff.h>
     52 
     53 int
     54 check_coff(int fd, const char *filename)
     55 {
     56 	struct coff_filehdr fh;
     57 	struct stat sb;
     58 
     59 	/*
     60 	 * Check the header to make sure it's an COFF file (of the
     61 	 * appropriate size).
     62 	 */
     63 	if (fstat(fd, &sb) == -1)
     64 		return 0;
     65 	if (sb.st_size > SIZE_T_MAX)
     66 		return 0;
     67 	if (read(fd, &fh, sizeof fh) != sizeof fh)
     68 		return 0;
     69 
     70 	if (COFF_BADMAG(&fh))
     71 		return 0;
     72 
     73 	return 1;
     74 }
     75 
     76 int
     77 hide_coff(int fd, const char *filename)
     78 {
     79 
     80 	fprintf(stderr, "%s: COFF executables not currently supported\n",
     81 		filename);
     82 	return 1;
     83 }
     84 
     85 #endif /* defined(NLIST_COFF) */
     86