80643c90e3
but is useful to have handy. EFI GPT partitions are used instead of the fdisk+disklabel combination. They are pure 64 bit LBA, are fully extensible, support up to 16383 partitons per disk, etc.
115 lines
2.6 KiB
C
115 lines
2.6 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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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/uuid.h>
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#include <sys/gpt.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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int recoverable;
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static void
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usage_destroy(void)
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{
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fprintf(stderr,
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"usage: %s [-r] device ...\n", getprogname());
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exit(1);
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}
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static void
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destroy(int fd)
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{
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map_t *pri_hdr, *sec_hdr;
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pri_hdr = map_find(MAP_TYPE_PRI_GPT_HDR);
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sec_hdr = map_find(MAP_TYPE_SEC_GPT_HDR);
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if (pri_hdr == NULL && sec_hdr == NULL) {
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warnx("%s: error: device doesn't contain a GPT", device_name);
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return;
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}
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if (recoverable && sec_hdr == NULL) {
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warnx("%s: error: recoverability not possible", device_name);
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return;
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}
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if (pri_hdr != NULL) {
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bzero(pri_hdr->map_data, secsz);
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gpt_write(fd, pri_hdr);
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}
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if (!recoverable && sec_hdr != NULL) {
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bzero(sec_hdr->map_data, secsz);
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gpt_write(fd, sec_hdr);
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}
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}
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int
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cmd_destroy(int argc, char *argv[])
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{
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int ch, fd;
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while ((ch = getopt(argc, argv, "r")) != -1) {
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switch(ch) {
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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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usage_destroy();
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}
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}
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if (argc == optind)
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usage_destroy();
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while (optind < argc) {
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fd = gpt_open(argv[optind++]);
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if (fd == -1) {
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warn("unable to open device '%s'", device_name);
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continue;
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}
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destroy(fd);
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gpt_close(fd);
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}
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return (0);
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}
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