148 lines
3.6 KiB
C
148 lines
3.6 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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#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/add.c,v 1.14 2006/06/22 22:05:28 marcel Exp $");
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#endif
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#ifdef __RCSID
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__RCSID("$NetBSD: unset.c,v 1.8 2015/12/01 16:32:19 christos 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 unsigned int entry;
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static uint64_t attributes;
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static int cmd_unset(gpt_t, int, char *[]);
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static const char *unsethelp[] = {
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"-a attribute -i index",
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};
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struct gpt_cmd c_unset = {
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"unset",
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cmd_unset,
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unsethelp, __arraycount(unsethelp),
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0,
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};
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#define usage() gpt_usage(NULL, &c_unset)
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static int
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unset(gpt_t gpt)
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{
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struct gpt_hdr *hdr;
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struct gpt_ent *ent;
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unsigned int i;
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if ((hdr = gpt_hdr(gpt)) == NULL)
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return -1;
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if (entry > le32toh(hdr->hdr_entries)) {
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gpt_warnx(gpt, "Index %u out of range (%u max)",
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entry, le32toh(hdr->hdr_entries));
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return -1;
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}
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i = entry - 1;
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ent = gpt_ent_primary(gpt, i);
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if (gpt_uuid_is_nil(ent->ent_type)) {
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gpt_warnx(gpt, "Entry at index %u is unused", entry);
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return -1;
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}
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ent->ent_attr &= ~attributes;
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if (gpt_write_primary(gpt) == -1)
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return -1;
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ent = gpt_ent_backup(gpt, i);
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ent->ent_attr &= ~attributes;
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if (gpt_write_backup(gpt) == -1)
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return -1;
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gpt_msg(gpt, "Partition %d attributes updated", entry);
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return 0;
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}
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static int
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cmd_unset(gpt_t gpt, int argc, char *argv[])
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{
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char *p;
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int ch;
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while ((ch = getopt(argc, argv, "a:i:")) != -1) {
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switch(ch) {
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case 'a':
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if (strcmp(optarg, "biosboot") == 0)
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attributes |= GPT_ENT_ATTR_LEGACY_BIOS_BOOTABLE;
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else if (strcmp(optarg, "bootme") == 0)
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attributes |= GPT_ENT_ATTR_BOOTME;
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else if (strcmp(optarg, "bootonce") == 0)
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attributes |= GPT_ENT_ATTR_BOOTONCE;
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else if (strcmp(optarg, "bootfailed") == 0)
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attributes |= GPT_ENT_ATTR_BOOTFAILED;
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else
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return usage();
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break;
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case 'i':
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if (entry > 0)
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return usage();
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entry = strtoul(optarg, &p, 10);
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if (*p != 0 || entry < 1)
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return usage();
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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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if (entry == 0 || attributes == 0)
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return usage();
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return unset(gpt);
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}
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