1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2006 Ruslan Ermilov <ru@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 AUTHOR 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 AUTHOR 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 <errno.h>
31 #include <stdio.h>
32 #include <stdint.h>
33 #include <string.h>
34 #include <strings.h>
35 #include <libgeom.h>
36 #include <geom/cache/g_cache.h>
37
38 #include "core/geom.h"
39 #include "misc/subr.h"
40
41
42 uint32_t lib_version = G_LIB_VERSION;
43 uint32_t version = G_CACHE_VERSION;
44
45 #define GCACHE_BLOCKSIZE "65536"
46 #define GCACHE_SIZE "100"
47
48 static void cache_main(struct gctl_req *req, unsigned flags);
49 static void cache_clear(struct gctl_req *req);
50 static void cache_dump(struct gctl_req *req);
51 static void cache_label(struct gctl_req *req);
52
53 struct g_command class_commands[] = {
54 { "clear", G_FLAG_VERBOSE, cache_main, G_NULL_OPTS,
55 "[-v] prov ..."
56 },
57 { "configure", G_FLAG_VERBOSE, NULL,
58 {
59 { 'b', "blocksize", "0", G_TYPE_NUMBER },
60 { 's', "size", "0", G_TYPE_NUMBER },
61 G_OPT_SENTINEL
62 },
63 "[-v] [-b blocksize] [-s size] name"
64 },
65 { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL,
66 {
67 { 'b', "blocksize", GCACHE_BLOCKSIZE, G_TYPE_NUMBER },
68 { 's', "size", GCACHE_SIZE, G_TYPE_NUMBER },
69 G_OPT_SENTINEL
70 },
71 "[-v] [-b blocksize] [-s size] name prov"
72 },
73 { "destroy", G_FLAG_VERBOSE, NULL,
74 {
75 { 'f', "force", NULL, G_TYPE_BOOL },
76 G_OPT_SENTINEL
77 },
78 "[-fv] name ..."
79 },
80 { "dump", 0, cache_main, G_NULL_OPTS,
81 "prov ..."
82 },
83 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, cache_main,
84 {
85 { 'b', "blocksize", GCACHE_BLOCKSIZE, G_TYPE_NUMBER },
86 { 's', "size", GCACHE_SIZE, G_TYPE_NUMBER },
87 G_OPT_SENTINEL
88 },
89 "[-v] [-b blocksize] [-s size] name prov"
90 },
91 { "reset", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
92 "[-v] name ..."
93 },
94 { "stop", G_FLAG_VERBOSE, NULL,
95 {
96 { 'f', "force", NULL, G_TYPE_BOOL },
97 G_OPT_SENTINEL
98 },
99 "[-fv] name ..."
100 },
101 G_CMD_SENTINEL
102 };
103
104 static int verbose = 0;
105
106 static void
cache_main(struct gctl_req * req,unsigned flags)107 cache_main(struct gctl_req *req, unsigned flags)
108 {
109 const char *name;
110
111 if ((flags & G_FLAG_VERBOSE) != 0)
112 verbose = 1;
113
114 name = gctl_get_ascii(req, "verb");
115 if (name == NULL) {
116 gctl_error(req, "No '%s' argument.", "verb");
117 return;
118 }
119 if (strcmp(name, "label") == 0)
120 cache_label(req);
121 else if (strcmp(name, "clear") == 0)
122 cache_clear(req);
123 else if (strcmp(name, "dump") == 0)
124 cache_dump(req);
125 else
126 gctl_error(req, "Unknown command: %s.", name);
127 }
128
129 static void
cache_label(struct gctl_req * req)130 cache_label(struct gctl_req *req)
131 {
132 struct g_cache_metadata md;
133 u_char sector[512];
134 const char *name;
135 int error, nargs;
136 intmax_t val;
137
138 bzero(sector, sizeof(sector));
139 nargs = gctl_get_int(req, "nargs");
140 if (nargs != 2) {
141 gctl_error(req, "Invalid number of arguments.");
142 return;
143 }
144
145 strlcpy(md.md_magic, G_CACHE_MAGIC, sizeof(md.md_magic));
146 md.md_version = G_CACHE_VERSION;
147 name = gctl_get_ascii(req, "arg0");
148 strlcpy(md.md_name, name, sizeof(md.md_name));
149 val = gctl_get_intmax(req, "blocksize");
150 md.md_bsize = val;
151 val = gctl_get_intmax(req, "size");
152 md.md_size = val;
153
154 name = gctl_get_ascii(req, "arg1");
155 md.md_provsize = g_get_mediasize(name);
156 if (md.md_provsize == 0) {
157 fprintf(stderr, "Can't get mediasize of %s: %s.\n",
158 name, strerror(errno));
159 gctl_error(req, "Not fully done.");
160 return;
161 }
162 cache_metadata_encode(&md, sector);
163 error = g_metadata_store(name, sector, sizeof(sector));
164 if (error != 0) {
165 fprintf(stderr, "Can't store metadata on %s: %s.\n",
166 name, strerror(error));
167 gctl_error(req, "Not fully done.");
168 return;
169 }
170 if (verbose)
171 printf("Metadata value stored on %s.\n", name);
172 }
173
174 static void
cache_clear(struct gctl_req * req)175 cache_clear(struct gctl_req *req)
176 {
177 const char *name;
178 int error, i, nargs;
179
180 nargs = gctl_get_int(req, "nargs");
181 if (nargs < 1) {
182 gctl_error(req, "Too few arguments.");
183 return;
184 }
185
186 for (i = 0; i < nargs; i++) {
187 name = gctl_get_ascii(req, "arg%d", i);
188 error = g_metadata_clear(name, G_CACHE_MAGIC);
189 if (error != 0) {
190 fprintf(stderr, "Can't clear metadata on %s: %s.\n",
191 name, strerror(error));
192 gctl_error(req, "Not fully done.");
193 continue;
194 }
195 if (verbose)
196 printf("Metadata cleared on %s.\n", name);
197 }
198 }
199
200 static void
cache_metadata_dump(const struct g_cache_metadata * md)201 cache_metadata_dump(const struct g_cache_metadata *md)
202 {
203
204 printf(" Magic string: %s\n", md->md_magic);
205 printf(" Metadata version: %u\n", (u_int)md->md_version);
206 printf(" Device name: %s\n", md->md_name);
207 printf(" Block size: %u\n", (u_int)md->md_bsize);
208 printf(" Cache size: %u\n", (u_int)md->md_size);
209 printf(" Provider size: %ju\n", (uintmax_t)md->md_provsize);
210 }
211
212 static void
cache_dump(struct gctl_req * req)213 cache_dump(struct gctl_req *req)
214 {
215 struct g_cache_metadata md, tmpmd;
216 const char *name;
217 int error, i, nargs;
218
219 nargs = gctl_get_int(req, "nargs");
220 if (nargs < 1) {
221 gctl_error(req, "Too few arguments.");
222 return;
223 }
224
225 for (i = 0; i < nargs; i++) {
226 name = gctl_get_ascii(req, "arg%d", i);
227 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
228 G_CACHE_MAGIC);
229 if (error != 0) {
230 fprintf(stderr, "Can't read metadata from %s: %s.\n",
231 name, strerror(error));
232 gctl_error(req, "Not fully done.");
233 continue;
234 }
235 cache_metadata_decode((u_char *)&tmpmd, &md);
236 printf("Metadata on %s:\n", name);
237 cache_metadata_dump(&md);
238 printf("\n");
239 }
240 }
241