Home | History | Annotate | Line # | Download | only in gpt 
      1 /*-
      2  * Copyright (c) 2002 Marcel Moolenaar
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #if HAVE_NBTOOL_CONFIG_H
     28 #include "nbtool_config.h"
     29 #endif
     30 
     31 #include <sys/cdefs.h>
     32 #ifdef __FBSDID
     33 __FBSDID("$FreeBSD: src/sbin/gpt/add.c,v 1.14 2006/06/22 22:05:28 marcel Exp $");
     34 #endif
     35 #ifdef __RCSID
     36 __RCSID("$NetBSD: unset.c,v 1.16 2025/02/23 20:47:19 christos Exp $");
     37 #endif
     38 
     39 #include <sys/types.h>
     40 
     41 #include <err.h>
     42 #include <stddef.h>
     43 #include <stdio.h>
     44 #include <stdlib.h>
     45 #include <string.h>
     46 #include <unistd.h>
     47 
     48 #include "map.h"
     49 #include "gpt.h"
     50 #include "gpt_private.h"
     51 
     52 static int cmd_unset(gpt_t, int, char *[]);
     53 
     54 static const char *unsethelp[] = {
     55 	"-a attribute -i index",
     56 	"-a attribute -b startsec",
     57 	"-l",
     58 };
     59 
     60 const struct gpt_cmd c_unset = {
     61 	"unset",
     62 	cmd_unset,
     63 	unsethelp, __arraycount(unsethelp),
     64 	GPT_OPTDEV,
     65 };
     66 
     67 #define usage() gpt_usage(NULL, &c_unset)
     68 
     69 static int
     70 cmd_unset(gpt_t gpt, int argc, char *argv[])
     71 {
     72 	int ch;
     73 	unsigned int entry = 0;
     74 	uint64_t attributes = 0;
     75 	off_t start = 0;
     76 	map_t m;
     77 
     78 	while ((ch = getopt(argc, argv, "a:b:i:l")) != -1) {
     79 		switch(ch) {
     80 		case 'a':
     81 			if (gpt == NULL || gpt_attr_get(gpt, &attributes) == -1)
     82 				return usage();
     83 			break;
     84 		case 'b':
     85 			if (gpt == NULL || gpt_human_get(gpt, &start) == -1)
     86 				return usage();
     87 			break;
     88 		case 'i':
     89 			if (gpt == NULL || gpt_uint_get(gpt, &entry) == -1)
     90 				return usage();
     91 			break;
     92 		case 'l':
     93 			gpt_attr_help("\t");
     94 			return 0;
     95 		default:
     96 			return usage();
     97 		}
     98 	}
     99 
    100 	if (start > 0) {
    101 		for (m = map_first(gpt); m != NULL; m = m->map_next) {
    102 			if (m->map_type != MAP_TYPE_GPT_PART ||
    103 			    m->map_index < 1)
    104 				continue;
    105 			if (start != m->map_start)
    106 				continue;
    107 			entry = m->map_index;
    108 			break;
    109 		}
    110 	}
    111 
    112 	if (gpt == NULL || argc != optind)
    113 		return usage();
    114 
    115 	return gpt_attr_update(gpt, entry, 0, attributes);
    116 }
    117