1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <errno.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <strings.h>
35 #include <assert.h>
36 #include <libgeom.h>
37 #include <geom/label/g_label.h>
38
39 #include "core/geom.h"
40 #include "misc/subr.h"
41
42 #ifdef STATIC_GEOM_CLASSES
43 #define PUBSYM(x) glabel_##x
44 #else
45 #define PUBSYM(x) x
46 #endif
47
48 uint32_t PUBSYM(lib_version) = G_LIB_VERSION;
49 uint32_t PUBSYM(version) = G_LABEL_VERSION;
50
51 static void label_main(struct gctl_req *req, unsigned flags);
52 static void label_clear(struct gctl_req *req);
53 static void label_dump(struct gctl_req *req);
54 static void label_label(struct gctl_req *req);
55 static void label_refresh(struct gctl_req *req);
56
57 struct 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 { "refresh", 0, label_main, G_NULL_OPTS,
78 "dev ..."
79 },
80 { "stop", G_FLAG_VERBOSE, NULL,
81 {
82 { 'f', "force", NULL, G_TYPE_BOOL },
83 G_OPT_SENTINEL
84 },
85 "[-fv] name ..."
86 },
87 G_CMD_SENTINEL
88 };
89
90 static int verbose = 0;
91
92 static void
label_main(struct gctl_req * req,unsigned flags)93 label_main(struct gctl_req *req, unsigned flags)
94 {
95 const char *name;
96
97 if ((flags & G_FLAG_VERBOSE) != 0)
98 verbose = 1;
99
100 name = gctl_get_ascii(req, "verb");
101 if (name == NULL) {
102 gctl_error(req, "No '%s' argument.", "verb");
103 return;
104 }
105 if (strcmp(name, "label") == 0)
106 label_label(req);
107 else if (strcmp(name, "clear") == 0)
108 label_clear(req);
109 else if (strcmp(name, "dump") == 0)
110 label_dump(req);
111 else if (strcmp(name, "refresh") == 0)
112 label_refresh(req);
113 else
114 gctl_error(req, "Unknown command: %s.", name);
115 }
116
117 static void
label_label(struct gctl_req * req)118 label_label(struct gctl_req *req)
119 {
120 struct g_label_metadata md;
121 const char *name, *label;
122 u_char sector[512];
123 int error, nargs;
124
125 bzero(sector, sizeof(sector));
126 nargs = gctl_get_int(req, "nargs");
127 if (nargs != 2) {
128 gctl_error(req, "Invalid number of arguments.");
129 return;
130 }
131
132 /*
133 * Clear last sector first to spoil all components if device exists.
134 */
135 name = gctl_get_ascii(req, "arg1");
136 error = g_metadata_clear(name, NULL);
137 if (error != 0) {
138 gctl_error(req, "Can't store metadata on %s: %s.", name,
139 strerror(error));
140 return;
141 }
142
143 strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic));
144 md.md_version = G_LABEL_VERSION;
145 label = gctl_get_ascii(req, "arg0");
146 bzero(md.md_label, sizeof(md.md_label));
147 strlcpy(md.md_label, label, sizeof(md.md_label));
148 md.md_provsize = g_get_mediasize(name);
149 if (md.md_provsize == 0) {
150 gctl_error(req, "Can't get mediasize of %s: %s.", name,
151 strerror(errno));
152 return;
153 }
154
155 /*
156 * Ok, store metadata.
157 */
158 label_metadata_encode(&md, sector);
159 error = g_metadata_store(name, sector, sizeof(sector));
160 if (error != 0) {
161 fprintf(stderr, "Can't store metadata on %s: %s.\n", name,
162 strerror(error));
163 gctl_error(req, "Not done.");
164 }
165 if (verbose)
166 printf("Metadata value stored on %s.\n", name);
167 }
168
169 static void
label_clear(struct gctl_req * req)170 label_clear(struct gctl_req *req)
171 {
172 const char *name;
173 int error, i, nargs;
174
175 nargs = gctl_get_int(req, "nargs");
176 if (nargs < 1) {
177 gctl_error(req, "Too few arguments.");
178 return;
179 }
180
181 for (i = 0; i < nargs; i++) {
182 name = gctl_get_ascii(req, "arg%d", i);
183 error = g_metadata_clear(name, G_LABEL_MAGIC);
184 if (error != 0) {
185 fprintf(stderr, "Can't clear metadata on %s: %s.\n",
186 name, strerror(error));
187 gctl_error(req, "Not fully done.");
188 continue;
189 }
190 if (verbose)
191 printf("Metadata cleared on %s.\n", name);
192 }
193 }
194
195 static void
label_metadata_dump(const struct g_label_metadata * md)196 label_metadata_dump(const struct g_label_metadata *md)
197 {
198
199 printf(" Magic string: %s\n", md->md_magic);
200 printf("Metadata version: %u\n", (u_int)md->md_version);
201 printf(" Label: %s\n", md->md_label);
202 }
203
204 static void
label_dump(struct gctl_req * req)205 label_dump(struct gctl_req *req)
206 {
207 struct g_label_metadata md, tmpmd;
208 const char *name;
209 int error, i, nargs;
210
211 nargs = gctl_get_int(req, "nargs");
212 if (nargs < 1) {
213 gctl_error(req, "Too few arguments.");
214 return;
215 }
216
217 for (i = 0; i < nargs; i++) {
218 name = gctl_get_ascii(req, "arg%d", i);
219 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
220 G_LABEL_MAGIC);
221 if (error != 0) {
222 fprintf(stderr, "Can't read metadata from %s: %s.\n",
223 name, strerror(error));
224 gctl_error(req, "Not fully done.");
225 continue;
226 }
227 label_metadata_decode((u_char *)&tmpmd, &md);
228 printf("Metadata on %s:\n", name);
229 label_metadata_dump(&md);
230 printf("\n");
231 }
232 }
233
234 static void
label_refresh(struct gctl_req * req)235 label_refresh(struct gctl_req *req)
236 {
237 const char *name;
238 int i, nargs, fd;
239
240 nargs = gctl_get_int(req, "nargs");
241 if (nargs < 1) {
242 gctl_error(req, "Too few arguments.");
243 return;
244 }
245
246 for (i = 0; i < nargs; i++) {
247 name = gctl_get_ascii(req, "arg%d", i);
248 fd = g_open(name, 1);
249 if (fd == -1) {
250 printf("Can't refresh metadata from %s: %s.\n",
251 name, strerror(errno));
252 } else {
253 printf("Metadata from %s refreshed.\n", name);
254 (void)g_close(fd);
255 }
256 }
257 }
258