NetBSD/sbin/gpt/uuid.c

115 lines
3.0 KiB
C

/*-
* Copyright (c) 2004 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#ifdef __FBSDID
__FBSDID("$FreeBSD: src/sbin/gpt/remove.c,v 1.10 2006/10/04 18:20:25 marcel Exp $");
#endif
#ifdef __RCSID
__RCSID("$NetBSD: uuid.c,v 1.1 2019/06/25 04:53:40 jnemeth Exp $");
#endif
#include <sys/types.h>
#include <err.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "map.h"
#include "gpt.h"
#include "gpt_private.h"
static int cmd_uuid(gpt_t, int, char *[]);
static const char *uuidhelp[] = {
"-a",
"[-b blocknr] [-i index] [-L label] [-s sectors] [-t type]",
};
struct gpt_cmd c_uuid = {
"uuid",
cmd_uuid,
uuidhelp, __arraycount(uuidhelp),
GPT_SYNC,
};
#define usage() gpt_usage(NULL, &c_uuid)
static void
change_ent(struct gpt_ent *ent, void *v, int backup)
{
static gpt_uuid_t uuidstore;
if (!backup)
gpt_uuid_generate(NULL, uuidstore);
memmove(ent->ent_guid, uuidstore, sizeof(ent->ent_guid));
}
static void
change_hdr(struct gpt_hdr *hdr, void *v, int backup)
{
static gpt_uuid_t uuidstore;
if (!backup)
gpt_uuid_generate(NULL, uuidstore);
memmove(hdr->hdr_guid, uuidstore, sizeof(hdr->hdr_guid));
}
static int
cmd_uuid(gpt_t gpt, int argc, char *argv[])
{
int ch, rc;
struct gpt_find find;
memset(&find, 0, sizeof(find));
find.msg = "UUID changed";
/* Get the uuid options */
while ((ch = getopt(argc, argv, GPT_FIND)) != -1) {
if (gpt == NULL || gpt_add_find(gpt, &find, ch) == -1)
return usage();
}
if (gpt == NULL || argc != optind)
return usage();
rc = gpt_change_ent(gpt, &find, change_ent, NULL);
if (rc != 0)
return rc;
if (find.all)
return gpt_change_hdr(gpt, &find, change_hdr, NULL);
return 0;
}