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
cmd_unset(gpt_t gpt,int argc,char * argv[])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