IABSD.fr/src/usr.bin/hexdump/hexdump.c

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• Author : mmcc
  Date : 2016-02-08 21:05:51
  Hash : e3c8d195
  Message : remove main() declaration from Michal Mazurek

• usr.bin/hexdump/hexdump.c

• /*	$OpenBSD: hexdump.c,v 1.20 2016/02/08 21:05:51 mmcc Exp $	*/
  /*	$NetBSD: hexdump.c,v 1.7 1997/10/19 02:34:06 lukem Exp $	*/
  
  /*
   * Copyright (c) 1989, 1993
   *	The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
   */
  
  #include <err.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <string.h>
  #include "hexdump.h"
  
  #define MINIMUM(a, b)	(((a) < (b)) ? (a) : (b))
  
  FS *fshead;				/* head of format strings */
  int blocksize;				/* data block size */
  int exitval;				/* final exit value */
  long length = -1;			/* max bytes to read */
  char *iobuf;				/* stdio I/O buffer */
  size_t iobufsiz;			/* size of stdio I/O buffer */
  
  int
  main(int argc, char *argv[])
  {
  	FS *tfs;
  	char *p;
  
  	if (pledge("stdio rpath", NULL) == -1)
  		err(1, "pledge");
  
  	if (!(p = strrchr(argv[0], 'o')) || strcmp(p, "od"))
  		newsyntax(argc, &argv);
  	else
  		oldsyntax(argc, &argv);
  
  	/* figure out the data block size */
  	for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
  		tfs->bcnt = size(tfs);
  		if (blocksize < tfs->bcnt)
  			blocksize = tfs->bcnt;
  	}
  	if (length != -1) {
  		iobufsiz = MINIMUM(length, blocksize);
  		if ((iobuf = malloc(iobufsiz)) == NULL)
  			err(1, NULL);
  	}
  	/* rewrite the rules, do syntax checking */
  	for (tfs = fshead; tfs; tfs = tfs->nextfs)
  		rewrite(tfs);
  
  	(void)next(argv);
  	display();
  	exit(exitval);
  }