1/*-
2 * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include <sys/param.h>
31#include <errno.h>
32#include <stdio.h>
33#include <stdlib.h>
34#include <string.h>
35#include <strings.h>
36#include <assert.h>
37#include <libgeom.h>
38#include <geom/label/g_label.h>
39
40#include "core/geom.h"
41#include "misc/subr.h"
42
43#ifdef STATIC_GEOM_CLASSES
44#define PUBSYM(x)	glabel_##x
45#else
46#define PUBSYM(x)	x
47#endif
48
49uint32_t PUBSYM(lib_version) = G_LIB_VERSION;
50uint32_t PUBSYM(version) = G_LABEL_VERSION;
51
52static void label_main(struct gctl_req *req, unsigned flags);
53static void label_clear(struct gctl_req *req);
54static void label_dump(struct gctl_req *req);
55static void label_label(struct gctl_req *req);
56
57struct g_command PUBSYM(class_commands)[] = {
58	{ "clear", G_FLAG_VERBOSE, label_main, G_NULL_OPTS,
59	    "[-v] dev ..."
60	},
61	{ "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, G_NULL_OPTS,
62	    "[-v] name dev"
63	},
64	{ "destroy", G_FLAG_VERBOSE, NULL,
65	    {
66		{ 'f', "force", NULL, G_TYPE_BOOL },
67		G_OPT_SENTINEL
68	    },
69	    "[-fv] name ..."
70	},
71	{ "dump", 0, label_main, G_NULL_OPTS,
72	    "dev ..."
73	},
74	{ "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, label_main, G_NULL_OPTS,
75	    "[-v] name dev"
76	},
77	{ "stop", G_FLAG_VERBOSE, NULL,
78	    {
79		{ 'f', "force", NULL, G_TYPE_BOOL },
80		G_OPT_SENTINEL
81	    },
82	    "[-fv] name ..."
83	},
84	G_CMD_SENTINEL
85};
86
87static int verbose = 0;
88
89static void
90label_main(struct gctl_req *req, unsigned flags)
91{
92	const char *name;
93
94	if ((flags & G_FLAG_VERBOSE) != 0)
95		verbose = 1;
96
97	name = gctl_get_ascii(req, "verb");
98	if (name == NULL) {
99		gctl_error(req, "No '%s' argument.", "verb");
100		return;
101	}
102	if (strcmp(name, "label") == 0)
103		label_label(req);
104	else if (strcmp(name, "clear") == 0)
105		label_clear(req);
106	else if (strcmp(name, "dump") == 0)
107		label_dump(req);
108	else
109		gctl_error(req, "Unknown command: %s.", name);
110}
111
112static void
113label_label(struct gctl_req *req)
114{
115	struct g_label_metadata md;
116	const char *name, *label;
117	u_char sector[512];
118	int error, nargs;
119
120	nargs = gctl_get_int(req, "nargs");
121	if (nargs != 2) {
122		gctl_error(req, "Invalid number of arguments.");
123		return;
124	}
125
126	/*
127	 * Clear last sector first to spoil all components if device exists.
128	 */
129	name = gctl_get_ascii(req, "arg1");
130	error = g_metadata_clear(name, NULL);
131	if (error != 0) {
132		gctl_error(req, "Can't store metadata on %s: %s.", name,
133		    strerror(error));
134		return;
135	}
136
137	strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic));
138	md.md_version = G_LABEL_VERSION;
139	label = gctl_get_ascii(req, "arg0");
140	strlcpy(md.md_label, label, sizeof(md.md_label));
141	md.md_provsize = g_get_mediasize(name);
142	if (md.md_provsize == 0) {
143		gctl_error(req, "Can't get mediasize of %s: %s.", name,
144		    strerror(errno));
145		return;
146	}
147
148	/*
149	 * Ok, store metadata.
150	 */
151	label_metadata_encode(&md, sector);
152	error = g_metadata_store(name, sector, sizeof(sector));
153	if (error != 0) {
154		fprintf(stderr, "Can't store metadata on %s: %s.\n", name,
155		    strerror(error));
156		gctl_error(req, "Not done.");
157	}
158	if (verbose)
159		printf("Metadata value stored on %s.\n", name);
160}
161
162static void
163label_clear(struct gctl_req *req)
164{
165	const char *name;
166	int error, i, nargs;
167
168	nargs = gctl_get_int(req, "nargs");
169	if (nargs < 1) {
170		gctl_error(req, "Too few arguments.");
171		return;
172	}
173
174	for (i = 0; i < nargs; i++) {
175		name = gctl_get_ascii(req, "arg%d", i);
176		error = g_metadata_clear(name, G_LABEL_MAGIC);
177		if (error != 0) {
178			fprintf(stderr, "Can't clear metadata on %s: %s.\n",
179			    name, strerror(error));
180			gctl_error(req, "Not fully done.");
181			continue;
182		}
183		if (verbose)
184			printf("Metadata cleared on %s.\n", name);
185	}
186}
187
188static void
189label_metadata_dump(const struct g_label_metadata *md)
190{
191
192	printf("    Magic string: %s\n", md->md_magic);
193	printf("Metadata version: %u\n", (u_int)md->md_version);
194	printf("           Label: %s\n", md->md_label);
195}
196
197static void
198label_dump(struct gctl_req *req)
199{
200	struct g_label_metadata md, tmpmd;
201	const char *name;
202	int error, i, nargs;
203
204	nargs = gctl_get_int(req, "nargs");
205	if (nargs < 1) {
206		gctl_error(req, "Too few arguments.");
207		return;
208	}
209
210	for (i = 0; i < nargs; i++) {
211		name = gctl_get_ascii(req, "arg%d", i);
212		error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
213		    G_LABEL_MAGIC);
214		if (error != 0) {
215			fprintf(stderr, "Can't read metadata from %s: %s.\n",
216			    name, strerror(error));
217			gctl_error(req, "Not fully done.");
218			continue;
219		}
220		label_metadata_decode((u_char *)&tmpmd, &md);
221		printf("Metadata on %s:\n", name);
222		label_metadata_dump(&md);
223		printf("\n");
224	}
225}
226