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/*****************************************************************************\
* $Id:$
*****************************************************************************
* Copyright (C) 2001-2002 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Jim Garlick <garlick@llnl.gov>.
* UCRL-CODE-2003-006.
*
* This file is part of Scrub, a program for erasing disks.
* For details, see <http://www.llnl.gov/linux/scrub/>.
*
* Scrub is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* Scrub is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along
* with Scrub; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
\*****************************************************************************/
/* pat - generate pattern on stdout */
#if HAVE_CONFIG_H
#include "config.h"
#endif
#if HAVE_GETOPT_H
#include <getopt.h>
#endif
#include <stdio.h>
#include <sys/types.h>
#include <libgen.h>
#include <stdlib.h>
#include <string.h>
#include "getsize.h"
void usage(void);
#define OPTIONS "Sp:s:"
#if HAVE_GETOPT_LONG
#define GETOPT(ac,av,opt,lopt) getopt_long(ac,av,opt,lopt,NULL)
static struct option longopts[] = {
{"pattern", required_argument, 0, 'p'},
{"device-size", required_argument, 0, 's'},
{"no-signature", no_argument, 0, 'S'},
{0, 0, 0, 0},
};
#else
#define GETOPT(ac,av,opt,lopt) getopt(ac,av,opt)
#endif
#define SCRUB_MAGIC "\001\002\003SCRUBBED!"
char *prog;
int main(int argc, char *argv[])
{
extern int optind;
extern char *optarg;
int c;
off_t size = 0;
int Sopt = 0;
unsigned char pat = 0;
prog = basename(argv[0]);
while ((c = GETOPT(argc, argv, OPTIONS, longopts)) != EOF) {
switch (c) {
case 'S': /* --no-signature */
Sopt = 1;
break;
case 'p': /* --pattern */
pat = strtoul(optarg, NULL, 0);
break;
case 's': /* --device-size */
size = str2size(optarg);
if (size == 0) {
fprintf(stderr, "%s: error parsing size string\n", prog);
exit(1);
}
break;
default:
usage();
}
}
if (size == 0)
usage();
if (size < strlen(SCRUB_MAGIC) + 1) {
fprintf(stderr, "%s: size is too small\n", prog);
exit(1);
}
if (!Sopt) {
printf("%s", SCRUB_MAGIC);
size -= strlen(SCRUB_MAGIC);
putchar(0);
size--;
}
while (size-- > 0)
putchar(pat);
exit(0);
}
void usage(void)
{
fprintf(stderr, "Usage: pat [-S] -s size -p byte\n");
exit(1);
}
/*
* vi:tabstop=4 shiftwidth=4 expandtab
*/
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