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 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 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 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 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 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