1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 __FBSDID("$FreeBSD$"); 31 32 #include <errno.h> 33 #include <stdio.h> 34 #include <stdint.h> 35 #include <string.h> 36 #include <strings.h> 37 #include <libgeom.h> 38 #include <geom/cache/g_cache.h> 39 40 #include "core/geom.h" 41 #include "misc/subr.h" 42 43 44 uint32_t lib_version = G_LIB_VERSION; 45 uint32_t version = G_CACHE_VERSION; 46 47 #define GCACHE_BLOCKSIZE "65536" 48 #define GCACHE_SIZE "100" 49 50 static void cache_main(struct gctl_req *req, unsigned flags); 51 static void cache_clear(struct gctl_req *req); 52 static void cache_dump(struct gctl_req *req); 53 static void cache_label(struct gctl_req *req); 54 55 struct g_command class_commands[] = { 56 { "clear", G_FLAG_VERBOSE, cache_main, G_NULL_OPTS, 57 "[-v] prov ..." 58 }, 59 { "configure", G_FLAG_VERBOSE, NULL, 60 { 61 { 'b', "blocksize", "0", G_TYPE_NUMBER }, 62 { 's', "size", "0", G_TYPE_NUMBER }, 63 G_OPT_SENTINEL 64 }, 65 "[-v] [-b blocksize] [-s size] name" 66 }, 67 { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, 68 { 69 { 'b', "blocksize", GCACHE_BLOCKSIZE, G_TYPE_NUMBER }, 70 { 's', "size", GCACHE_SIZE, G_TYPE_NUMBER }, 71 G_OPT_SENTINEL 72 }, 73 "[-v] [-b blocksize] [-s size] name prov" 74 }, 75 { "destroy", G_FLAG_VERBOSE, NULL, 76 { 77 { 'f', "force", NULL, G_TYPE_BOOL }, 78 G_OPT_SENTINEL 79 }, 80 "[-fv] name ..." 81 }, 82 { "dump", 0, cache_main, G_NULL_OPTS, 83 "prov ..." 84 }, 85 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, cache_main, 86 { 87 { 'b', "blocksize", GCACHE_BLOCKSIZE, G_TYPE_NUMBER }, 88 { 's', "size", GCACHE_SIZE, G_TYPE_NUMBER }, 89 G_OPT_SENTINEL 90 }, 91 "[-v] [-b blocksize] [-s size] name prov" 92 }, 93 { "reset", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, 94 "[-v] name ..." 95 }, 96 { "stop", G_FLAG_VERBOSE, NULL, 97 { 98 { 'f', "force", NULL, G_TYPE_BOOL }, 99 G_OPT_SENTINEL 100 }, 101 "[-fv] name ..." 102 }, 103 G_CMD_SENTINEL 104 }; 105 106 static int verbose = 0; 107 108 static void 109 cache_main(struct gctl_req *req, unsigned flags) 110 { 111 const char *name; 112 113 if ((flags & G_FLAG_VERBOSE) != 0) 114 verbose = 1; 115 116 name = gctl_get_ascii(req, "verb"); 117 if (name == NULL) { 118 gctl_error(req, "No '%s' argument.", "verb"); 119 return; 120 } 121 if (strcmp(name, "label") == 0) 122 cache_label(req); 123 else if (strcmp(name, "clear") == 0) 124 cache_clear(req); 125 else if (strcmp(name, "dump") == 0) 126 cache_dump(req); 127 else 128 gctl_error(req, "Unknown command: %s.", name); 129 } 130 131 static void 132 cache_label(struct gctl_req *req) 133 { 134 struct g_cache_metadata md; 135 u_char sector[512]; 136 const char *name; 137 int error, nargs; 138 intmax_t val; 139 140 bzero(sector, sizeof(sector)); 141 nargs = gctl_get_int(req, "nargs"); 142 if (nargs != 2) { 143 gctl_error(req, "Invalid number of arguments."); 144 return; 145 } 146 147 strlcpy(md.md_magic, G_CACHE_MAGIC, sizeof(md.md_magic)); 148 md.md_version = G_CACHE_VERSION; 149 name = gctl_get_ascii(req, "arg0"); 150 strlcpy(md.md_name, name, sizeof(md.md_name)); 151 val = gctl_get_intmax(req, "blocksize"); 152 md.md_bsize = val; 153 val = gctl_get_intmax(req, "size"); 154 md.md_size = val; 155 156 name = gctl_get_ascii(req, "arg1"); 157 md.md_provsize = g_get_mediasize(name); 158 if (md.md_provsize == 0) { 159 fprintf(stderr, "Can't get mediasize of %s: %s.\n", 160 name, strerror(errno)); 161 gctl_error(req, "Not fully done."); 162 return; 163 } 164 cache_metadata_encode(&md, sector); 165 error = g_metadata_store(name, sector, sizeof(sector)); 166 if (error != 0) { 167 fprintf(stderr, "Can't store metadata on %s: %s.\n", 168 name, strerror(error)); 169 gctl_error(req, "Not fully done."); 170 return; 171 } 172 if (verbose) 173 printf("Metadata value stored on %s.\n", name); 174 } 175 176 static void 177 cache_clear(struct gctl_req *req) 178 { 179 const char *name; 180 int error, i, nargs; 181 182 nargs = gctl_get_int(req, "nargs"); 183 if (nargs < 1) { 184 gctl_error(req, "Too few arguments."); 185 return; 186 } 187 188 for (i = 0; i < nargs; i++) { 189 name = gctl_get_ascii(req, "arg%d", i); 190 error = g_metadata_clear(name, G_CACHE_MAGIC); 191 if (error != 0) { 192 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 193 name, strerror(error)); 194 gctl_error(req, "Not fully done."); 195 continue; 196 } 197 if (verbose) 198 printf("Metadata cleared on %s.\n", name); 199 } 200 } 201 202 static void 203 cache_metadata_dump(const struct g_cache_metadata *md) 204 { 205 206 printf(" Magic string: %s\n", md->md_magic); 207 printf(" Metadata version: %u\n", (u_int)md->md_version); 208 printf(" Device name: %s\n", md->md_name); 209 printf(" Block size: %u\n", (u_int)md->md_bsize); 210 printf(" Cache size: %u\n", (u_int)md->md_size); 211 printf(" Provider size: %ju\n", (uintmax_t)md->md_provsize); 212 } 213 214 static void 215 cache_dump(struct gctl_req *req) 216 { 217 struct g_cache_metadata md, tmpmd; 218 const char *name; 219 int error, i, nargs; 220 221 nargs = gctl_get_int(req, "nargs"); 222 if (nargs < 1) { 223 gctl_error(req, "Too few arguments."); 224 return; 225 } 226 227 for (i = 0; i < nargs; i++) { 228 name = gctl_get_ascii(req, "arg%d", i); 229 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 230 G_CACHE_MAGIC); 231 if (error != 0) { 232 fprintf(stderr, "Can't read metadata from %s: %s.\n", 233 name, strerror(error)); 234 gctl_error(req, "Not fully done."); 235 continue; 236 } 237 cache_metadata_decode((u_char *)&tmpmd, &md); 238 printf("Metadata on %s:\n", name); 239 cache_metadata_dump(&md); 240 printf("\n"); 241 } 242 } 243