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 <paths.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <stdint.h>
35 #include <string.h>
36 #include <strings.h>
37 #include <assert.h>
38 #include <libgeom.h>
39 #include <geom/shsec/g_shsec.h>
40
41 #include "core/geom.h"
42 #include "misc/subr.h"
43
44
45 uint32_t lib_version = G_LIB_VERSION;
46 uint32_t version = G_SHSEC_VERSION;
47
48 static void shsec_main(struct gctl_req *req, unsigned flags);
49 static void shsec_clear(struct gctl_req *req);
50 static void shsec_dump(struct gctl_req *req);
51 static void shsec_label(struct gctl_req *req);
52
53 struct g_command class_commands[] = {
54 { "clear", G_FLAG_VERBOSE, shsec_main, G_NULL_OPTS,
55 "[-v] prov ..."
56 },
57 { "dump", 0, shsec_main, G_NULL_OPTS,
58 "prov ..."
59 },
60 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, shsec_main,
61 {
62 { 'h', "hardcode", NULL, G_TYPE_BOOL },
63 G_OPT_SENTINEL
64 },
65 "[-hv] name prov prov ..."
66 },
67 { "stop", G_FLAG_VERBOSE, NULL,
68 {
69 { 'f', "force", NULL, G_TYPE_BOOL },
70 G_OPT_SENTINEL
71 },
72 "[-fv] name ..."
73 },
74 G_CMD_SENTINEL
75 };
76
77 static int verbose = 0;
78
79 static void
shsec_main(struct gctl_req * req,unsigned flags)80 shsec_main(struct gctl_req *req, unsigned flags)
81 {
82 const char *name;
83
84 if ((flags & G_FLAG_VERBOSE) != 0)
85 verbose = 1;
86
87 name = gctl_get_ascii(req, "verb");
88 if (name == NULL) {
89 gctl_error(req, "No '%s' argument.", "verb");
90 return;
91 }
92 if (strcmp(name, "label") == 0)
93 shsec_label(req);
94 else if (strcmp(name, "clear") == 0)
95 shsec_clear(req);
96 else if (strcmp(name, "dump") == 0)
97 shsec_dump(req);
98 else
99 gctl_error(req, "Unknown command: %s.", name);
100 }
101
102 static void
shsec_label(struct gctl_req * req)103 shsec_label(struct gctl_req *req)
104 {
105 struct g_shsec_metadata md;
106 off_t compsize, msize;
107 u_char sector[512];
108 unsigned ssize, secsize;
109 const char *name;
110 int error, i, nargs, hardcode;
111
112 bzero(sector, sizeof(sector));
113 nargs = gctl_get_int(req, "nargs");
114 if (nargs <= 2) {
115 gctl_error(req, "Too few arguments.");
116 return;
117 }
118 hardcode = gctl_get_int(req, "hardcode");
119
120 /*
121 * Clear last sector first to spoil all components if device exists.
122 */
123 compsize = 0;
124 secsize = 0;
125 for (i = 1; i < nargs; i++) {
126 name = gctl_get_ascii(req, "arg%d", i);
127 msize = g_get_mediasize(name);
128 ssize = g_get_sectorsize(name);
129 if (msize == 0 || ssize == 0) {
130 gctl_error(req, "Can't get informations about %s: %s.",
131 name, strerror(errno));
132 return;
133 }
134 msize -= ssize;
135 if (compsize == 0 || (compsize > 0 && msize < compsize))
136 compsize = msize;
137 if (secsize == 0)
138 secsize = ssize;
139 else
140 secsize = g_lcm(secsize, ssize);
141
142 error = g_metadata_clear(name, NULL);
143 if (error != 0) {
144 gctl_error(req, "Can't store metadata on %s: %s.", name,
145 strerror(error));
146 return;
147 }
148 }
149
150 strlcpy(md.md_magic, G_SHSEC_MAGIC, sizeof(md.md_magic));
151 md.md_version = G_SHSEC_VERSION;
152 name = gctl_get_ascii(req, "arg0");
153 strlcpy(md.md_name, name, sizeof(md.md_name));
154 md.md_id = arc4random();
155 md.md_all = nargs - 1;
156
157 /*
158 * Ok, store metadata.
159 */
160 for (i = 1; i < nargs; i++) {
161 name = gctl_get_ascii(req, "arg%d", i);
162 msize = g_get_mediasize(name);
163 ssize = g_get_sectorsize(name);
164 if (compsize < msize - ssize) {
165 fprintf(stderr,
166 "warning: %s: only %jd bytes from %jd bytes used.\n",
167 name, (intmax_t)compsize, (intmax_t)(msize - ssize));
168 }
169
170 md.md_no = i - 1;
171 md.md_provsize = msize;
172 if (!hardcode)
173 bzero(md.md_provider, sizeof(md.md_provider));
174 else {
175 if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
176 name += sizeof(_PATH_DEV) - 1;
177 strlcpy(md.md_provider, name, sizeof(md.md_provider));
178 }
179 shsec_metadata_encode(&md, sector);
180 error = g_metadata_store(name, sector, sizeof(sector));
181 if (error != 0) {
182 fprintf(stderr, "Can't store metadata on %s: %s.\n",
183 name, strerror(error));
184 gctl_error(req, "Not fully done.");
185 continue;
186 }
187 if (verbose)
188 printf("Metadata value stored on %s.\n", name);
189 }
190 }
191
192 static void
shsec_clear(struct gctl_req * req)193 shsec_clear(struct gctl_req *req)
194 {
195 const char *name;
196 int error, i, nargs;
197
198 nargs = gctl_get_int(req, "nargs");
199 if (nargs < 1) {
200 gctl_error(req, "Too few arguments.");
201 return;
202 }
203
204 for (i = 0; i < nargs; i++) {
205 name = gctl_get_ascii(req, "arg%d", i);
206 error = g_metadata_clear(name, G_SHSEC_MAGIC);
207 if (error != 0) {
208 fprintf(stderr, "Can't clear metadata on %s: %s.\n",
209 name, strerror(error));
210 gctl_error(req, "Not fully done.");
211 continue;
212 }
213 if (verbose)
214 printf("Metadata cleared on %s.\n", name);
215 }
216 }
217
218 static void
shsec_metadata_dump(const struct g_shsec_metadata * md)219 shsec_metadata_dump(const struct g_shsec_metadata *md)
220 {
221
222 printf(" Magic string: %s\n", md->md_magic);
223 printf(" Metadata version: %u\n", (u_int)md->md_version);
224 printf(" Device name: %s\n", md->md_name);
225 printf(" Device ID: %u\n", (u_int)md->md_id);
226 printf(" Disk number: %u\n", (u_int)md->md_no);
227 printf("Total number of disks: %u\n", (u_int)md->md_all);
228 printf(" Hardcoded provider: %s\n", md->md_provider);
229 }
230
231 static void
shsec_dump(struct gctl_req * req)232 shsec_dump(struct gctl_req *req)
233 {
234 struct g_shsec_metadata md, tmpmd;
235 const char *name;
236 int error, i, nargs;
237
238 nargs = gctl_get_int(req, "nargs");
239 if (nargs < 1) {
240 gctl_error(req, "Too few arguments.");
241 return;
242 }
243
244 for (i = 0; i < nargs; i++) {
245 name = gctl_get_ascii(req, "arg%d", i);
246 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
247 G_SHSEC_MAGIC);
248 if (error != 0) {
249 fprintf(stderr, "Can't read metadata from %s: %s.\n",
250 name, strerror(error));
251 gctl_error(req, "Not fully done.");
252 continue;
253 }
254 shsec_metadata_decode((u_char *)&tmpmd, &md);
255 printf("Metadata on %s:\n", name);
256 shsec_metadata_dump(&md);
257 printf("\n");
258 }
259 }
260