75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
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* Copyright (c) 2013, 2014
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* The President and Fellows of Harvard College.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* poisondisk - fill a disk with nonzero poison values
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* usage: poisondisk disk-image
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*/
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#include <stdint.h>
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#include <string.h>
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#include <unistd.h>
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#include <err.h>
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#ifdef HOST
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#include "hostcompat.h"
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#endif
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#include "disk.h"
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#define POISON_BYTE 0xa9
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#define BLOCKSIZE 512
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static
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void
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poison(void)
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{
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char buf[BLOCKSIZE];
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off_t sectors, i;
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memset(buf, POISON_BYTE, sizeof(buf));
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sectors = diskblocks();
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for (i=0; i<sectors; i++) {
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diskwrite(buf, i);
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}
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}
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int
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main(int argc, char *argv[])
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{
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if (argc != 2) {
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errx(1, "Usage: %s disk-image", argv[0]);
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}
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opendisk(argv[1]);
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poison();
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closedisk();
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return 0;
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}
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