1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2004-2005 Pawel Jakub Dawidek <[email protected]>
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/cdefs.h>
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
49 uint32_t PUBSYM(lib_version) = G_LIB_VERSION;
50 uint32_t PUBSYM(version) = G_LABEL_VERSION;
51
52 static void label_main(struct gctl_req *req, unsigned flags);
53 static void label_clear(struct gctl_req *req);
54 static void label_dump(struct gctl_req *req);
55 static void label_label(struct gctl_req *req);
56 static void label_refresh(struct gctl_req *req);
57
58 struct g_command PUBSYM(class_commands)[] = {
59 { "clear", G_FLAG_VERBOSE, label_main, G_NULL_OPTS,
60 "[-v] dev ..."
61 },
62 { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, G_NULL_OPTS,
63 "[-v] name dev"
64 },
65 { "destroy", G_FLAG_VERBOSE, NULL,
66 {
67 { 'f', "force", NULL, G_TYPE_BOOL },
68 G_OPT_SENTINEL
69 },
70 "[-fv] name ..."
71 },
72 { "dump", 0, label_main, G_NULL_OPTS,
73 "dev ..."
74 },
75 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, label_main, G_NULL_OPTS,
76 "[-v] name dev"
77 },
78 { "refresh", 0, label_main, G_NULL_OPTS,
79 "dev ..."
80 },
81 { "stop", G_FLAG_VERBOSE, NULL,
82 {
83 { 'f', "force", NULL, G_TYPE_BOOL },
84 G_OPT_SENTINEL
85 },
86 "[-fv] name ..."
87 },
88 G_CMD_SENTINEL
89 };
90
91 static int verbose = 0;
92
93 static void
label_main(struct gctl_req * req,unsigned flags)94 label_main(struct gctl_req *req, unsigned flags)
95 {
96 const char *name;
97
98 if ((flags & G_FLAG_VERBOSE) != 0)
99 verbose = 1;
100
101 name = gctl_get_ascii(req, "verb");
102 if (name == NULL) {
103 gctl_error(req, "No '%s' argument.", "verb");
104 return;
105 }
106 if (strcmp(name, "label") == 0)
107 label_label(req);
108 else if (strcmp(name, "clear") == 0)
109 label_clear(req);
110 else if (strcmp(name, "dump") == 0)
111 label_dump(req);
112 else if (strcmp(name, "refresh") == 0)
113 label_refresh(req);
114 else
115 gctl_error(req, "Unknown command: %s.", name);
116 }
117
118 static void
label_label(struct gctl_req * req)119 label_label(struct gctl_req *req)
120 {
121 struct g_label_metadata md;
122 const char *name, *label;
123 u_char sector[512];
124 int error, nargs;
125
126 bzero(sector, sizeof(sector));
127 nargs = gctl_get_int(req, "nargs");
128 if (nargs != 2) {
129 gctl_error(req, "Invalid number of arguments.");
130 return;
131 }
132
133 /*
134 * Clear last sector first to spoil all components if device exists.
135 */
136 name = gctl_get_ascii(req, "arg1");
137 error = g_metadata_clear(name, NULL);
138 if (error != 0) {
139 gctl_error(req, "Can't store metadata on %s: %s.", name,
140 strerror(error));
141 return;
142 }
143
144 strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic));
145 md.md_version = G_LABEL_VERSION;
146 label = gctl_get_ascii(req, "arg0");
147 bzero(md.md_label, sizeof(md.md_label));
148 strlcpy(md.md_label, label, sizeof(md.md_label));
149 md.md_provsize = g_get_mediasize(name);
150 if (md.md_provsize == 0) {
151 gctl_error(req, "Can't get mediasize of %s: %s.", name,
152 strerror(errno));
153 return;
154 }
155
156 /*
157 * Ok, store metadata.
158 */
159 label_metadata_encode(&md, sector);
160 error = g_metadata_store(name, sector, sizeof(sector));
161 if (error != 0) {
162 fprintf(stderr, "Can't store metadata on %s: %s.\n", name,
163 strerror(error));
164 gctl_error(req, "Not done.");
165 }
166 if (verbose)
167 printf("Metadata value stored on %s.\n", name);
168 }
169
170 static void
label_clear(struct gctl_req * req)171 label_clear(struct gctl_req *req)
172 {
173 const char *name;
174 int error, i, nargs;
175
176 nargs = gctl_get_int(req, "nargs");
177 if (nargs < 1) {
178 gctl_error(req, "Too few arguments.");
179 return;
180 }
181
182 for (i = 0; i < nargs; i++) {
183 name = gctl_get_ascii(req, "arg%d", i);
184 error = g_metadata_clear(name, G_LABEL_MAGIC);
185 if (error != 0) {
186 fprintf(stderr, "Can't clear metadata on %s: %s.\n",
187 name, strerror(error));
188 gctl_error(req, "Not fully done.");
189 continue;
190 }
191 if (verbose)
192 printf("Metadata cleared on %s.\n", name);
193 }
194 }
195
196 static void
label_metadata_dump(const struct g_label_metadata * md)197 label_metadata_dump(const struct g_label_metadata *md)
198 {
199
200 printf(" Magic string: %s\n", md->md_magic);
201 printf("Metadata version: %u\n", (u_int)md->md_version);
202 printf(" Label: %s\n", md->md_label);
203 }
204
205 static void
label_dump(struct gctl_req * req)206 label_dump(struct gctl_req *req)
207 {
208 struct g_label_metadata md, tmpmd;
209 const char *name;
210 int error, i, nargs;
211
212 nargs = gctl_get_int(req, "nargs");
213 if (nargs < 1) {
214 gctl_error(req, "Too few arguments.");
215 return;
216 }
217
218 for (i = 0; i < nargs; i++) {
219 name = gctl_get_ascii(req, "arg%d", i);
220 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
221 G_LABEL_MAGIC);
222 if (error != 0) {
223 fprintf(stderr, "Can't read metadata from %s: %s.\n",
224 name, strerror(error));
225 gctl_error(req, "Not fully done.");
226 continue;
227 }
228 label_metadata_decode((u_char *)&tmpmd, &md);
229 printf("Metadata on %s:\n", name);
230 label_metadata_dump(&md);
231 printf("\n");
232 }
233 }
234
235 static void
label_refresh(struct gctl_req * req)236 label_refresh(struct gctl_req *req)
237 {
238 const char *name;
239 int i, nargs, fd;
240
241 nargs = gctl_get_int(req, "nargs");
242 if (nargs < 1) {
243 gctl_error(req, "Too few arguments.");
244 return;
245 }
246
247 for (i = 0; i < nargs; i++) {
248 name = gctl_get_ascii(req, "arg%d", i);
249 fd = g_open(name, 1);
250 if (fd == -1) {
251 printf("Can't refresh metadata from %s: %s.\n",
252 name, strerror(errno));
253 } else {
254 printf("Metadata from %s refreshed.\n", name);
255 (void)g_close(fd);
256 }
257 }
258 }
259