116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
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/*-
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* Copyright (c) 2012 SRI International
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* All rights reserved.
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
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* ("CTSRD"), as part of the DARPA CRASH research programme.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <err.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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/* XXXBED: should install and include sys/dev/isf.h */
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struct isf_range {
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off_t ir_off; /* Offset of range to delete (set to 0xFF) */
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size_t ir_size; /* Size of range */
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};
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#define ISF_ERASE _IOW('I', 1, struct isf_range)
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#define ISF_ERASE_BLOCK (128 * 1024)
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static enum {UNSET, ERASE} action = UNSET;
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static void
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usage(void)
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{
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fprintf(stderr, "usage: isfctl <device> erase <offset> <size>\n");
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exit(1);
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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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struct isf_range ir;
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int fd, i;
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char *p, *dev;
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if (argc < 2)
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usage();
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argc--; argv++;
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if (*argv[0] == '/')
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dev = argv[0];
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else
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asprintf(&dev, "/dev/%s", argv[0]);
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argc--; argv++;
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fd = open(dev, O_RDWR);
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if (fd < 0)
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err(1, "unable to open device -- %s", dev);
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if (strcmp(argv[0], "erase") == 0) {
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if (argc != 3)
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usage();
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action = ERASE;
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ir.ir_off = strtol(argv[1], &p, 0);
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if (*p)
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errx(1, "invalid offset -- %s", argv[2]);
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ir.ir_size = strtol(argv[2], &p, 0);
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if (*p)
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errx(1, "invalid size -- %s", argv[3]);
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/*
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* If the user requests to delete less than 32K of space
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* then assume that they want to delete a number of 128K
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* blocks.
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*/
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if (ir.ir_size < 32 * 1024)
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ir.ir_size *= 128 * 1024;
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}
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switch (action) {
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case ERASE:
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i = ioctl(fd, ISF_ERASE, &ir);
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if (i < 0)
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err(1, "ioctl(%s, %jx, %zx)", dev,
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(intmax_t)ir.ir_off, ir.ir_size);
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break;
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default:
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usage();
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}
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close(fd);
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return (0);
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}
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