137 lines
3.3 KiB
C
137 lines
3.3 KiB
C
/*-
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* Copyright (c) 2002 Marcel Moolenaar
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* All rights reserved.
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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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*
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/cdefs.h>
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#ifdef __FBSDID
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__FBSDID("$FreeBSD: src/sbin/gpt/destroy.c,v 1.6 2005/08/31 01:47:19 marcel Exp $");
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#endif
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#ifdef __RCSID
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__RCSID("$NetBSD: destroy.c,v 1.14 2022/11/20 11:57:02 mlelstv Exp $");
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#endif
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#include <sys/types.h>
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#include <err.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "map.h"
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#include "gpt.h"
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#include "gpt_private.h"
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static int cmd_destroy(gpt_t, int, char *[]);
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static const char *destroyhelp[] = {
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"[-r]",
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};
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struct gpt_cmd c_destroy = {
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"destroy",
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cmd_destroy,
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destroyhelp, __arraycount(destroyhelp),
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GPT_OPTGPT | GPT_SYNC,
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};
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#define usage() gpt_usage(NULL, &c_destroy)
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static int
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destroy(gpt_t gpt, int force, int recoverable)
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{
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map_t pri_hdr, sec_hdr, pmbr;
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pri_hdr = map_find(gpt, MAP_TYPE_PRI_GPT_HDR);
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sec_hdr = map_find(gpt, MAP_TYPE_SEC_GPT_HDR);
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pmbr = map_find(gpt, MAP_TYPE_PMBR);
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if (pri_hdr == NULL && sec_hdr == NULL) {
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gpt_warnx(gpt, "Device doesn't contain a GPT");
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return -1;
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}
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if (recoverable && sec_hdr == NULL) {
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gpt_warnx(gpt, "Recoverability not possible");
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return -1;
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}
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if (pri_hdr != NULL) {
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memset(pri_hdr->map_data, 0, gpt->secsz);
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if (gpt_write(gpt, pri_hdr) == -1) {
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gpt_warnx(gpt, "Error writing primary header");
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return -1;
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}
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}
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if (!recoverable && sec_hdr != NULL) {
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memset(sec_hdr->map_data, 0, gpt->secsz);
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if (gpt_write(gpt, sec_hdr) == -1) {
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gpt_warnx(gpt, "Error writing backup header");
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return -1;
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}
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}
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if (!recoverable && pmbr != NULL) {
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memset(pmbr->map_data, 0, gpt->secsz);
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if (gpt_write(gpt, pmbr) == -1) {
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gpt_warnx(gpt, "Error deleting PMBR");
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return -1;
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}
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}
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return 0;
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}
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static int
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cmd_destroy(gpt_t gpt, int argc, char *argv[])
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{
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int ch;
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int recoverable = 0;
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while ((ch = getopt(argc, argv, "fr")) != -1) {
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switch(ch) {
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case 'f':
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break;
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case 'r':
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recoverable = 1;
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break;
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default:
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return usage();
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}
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}
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if (argc != optind)
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return usage();
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return destroy(gpt, 0, recoverable);
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}
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