xref: /netbsd-src/sbin/gpt/remove.c (revision e003a26f4c045a107e32f411093c2c6729750c7c)
1 /*-
2  * Copyright (c) 2004 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/remove.c,v 1.10 2006/10/04 18:20:25 marcel Exp $");
34 #endif
35 #ifdef __RCSID
36 __RCSID("$NetBSD: remove.c,v 1.23 2019/06/21 02:14:59 jnemeth 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_remove(gpt_t, int, char *[]);
53 
54 static const char *removehelp[] = {
55 	"-a",
56 	"[-b blocknr] [-i index] [-L label] [-s sectors] [-t type]",
57 };
58 
59 struct gpt_cmd c_remove = {
60 	"remove",
61 	cmd_remove,
62 	removehelp, __arraycount(removehelp),
63 	GPT_SYNC,
64 };
65 
66 #define usage() gpt_usage(NULL, &c_remove)
67 
68 static void
change(struct gpt_ent * ent,void * v,int backup)69 change(struct gpt_ent *ent, void *v, int backup)
70 {
71 	/* Remove the primary entry by clearing the partition type. */
72 	gpt_uuid_copy(ent->ent_type, gpt_uuid_nil);
73 }
74 
75 static int
cmd_remove(gpt_t gpt,int argc,char * argv[])76 cmd_remove(gpt_t gpt, int argc, char *argv[])
77 {
78 	int ch;
79 	struct gpt_find find;
80 
81 	memset(&find, 0, sizeof(find));
82 	find.msg = "removed";
83 
84 	/* Get the remove options */
85 	while ((ch = getopt(argc, argv, GPT_FIND)) != -1)
86 		if (gpt_add_find(gpt, &find, ch) == -1)
87 			return usage();
88 
89 	if (argc != optind)
90 		return usage();
91 
92 	return gpt_change_ent(gpt, &find, change, NULL);
93 }
94