1/*- 2 * Copyright (c) 2006 Ruslan Ermilov <ru@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 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 42uint32_t lib_version = G_LIB_VERSION; 43uint32_t version = G_CACHE_VERSION; 44 45#define GCACHE_BLOCKSIZE "65536" 46#define GCACHE_SIZE "100" 47 48static void cache_main(struct gctl_req *req, unsigned flags); 49static void cache_clear(struct gctl_req *req); 50static void cache_dump(struct gctl_req *req); 51static void cache_label(struct gctl_req *req); 52 53struct 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 104static int verbose = 0; 105 106static void 107cache_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 129static void 130cache_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 nargs = gctl_get_int(req, "nargs"); 139 if (nargs != 2) { 140 gctl_error(req, "Invalid number of arguments."); 141 return; 142 } 143 144 strlcpy(md.md_magic, G_CACHE_MAGIC, sizeof(md.md_magic)); 145 md.md_version = G_CACHE_VERSION; 146 name = gctl_get_ascii(req, "arg0"); 147 strlcpy(md.md_name, name, sizeof(md.md_name)); 148 val = gctl_get_intmax(req, "blocksize"); 149 md.md_bsize = val; 150 val = gctl_get_intmax(req, "size"); 151 md.md_size = val; 152 153 name = gctl_get_ascii(req, "arg1"); 154 md.md_provsize = g_get_mediasize(name); 155 if (md.md_provsize == 0) { 156 fprintf(stderr, "Can't get mediasize of %s: %s.\n", 157 name, strerror(errno)); 158 gctl_error(req, "Not fully done."); 159 return; 160 } 161 cache_metadata_encode(&md, sector); 162 error = g_metadata_store(name, sector, sizeof(sector)); 163 if (error != 0) { 164 fprintf(stderr, "Can't store metadata on %s: %s.\n", 165 name, strerror(error)); 166 gctl_error(req, "Not fully done."); 167 return; 168 } 169 if (verbose) 170 printf("Metadata value stored on %s.\n", name); 171} 172 173static void 174cache_clear(struct gctl_req *req) 175{ 176 const char *name; 177 int error, i, nargs; 178 179 nargs = gctl_get_int(req, "nargs"); 180 if (nargs < 1) { 181 gctl_error(req, "Too few arguments."); 182 return; 183 } 184 185 for (i = 0; i < nargs; i++) { 186 name = gctl_get_ascii(req, "arg%d", i); 187 error = g_metadata_clear(name, G_CACHE_MAGIC); 188 if (error != 0) { 189 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 190 name, strerror(error)); 191 gctl_error(req, "Not fully done."); 192 continue; 193 } 194 if (verbose) 195 printf("Metadata cleared on %s.\n", name); 196 } 197} 198 199static void 200cache_metadata_dump(const struct g_cache_metadata *md) 201{ 202 203 printf(" Magic string: %s\n", md->md_magic); 204 printf(" Metadata version: %u\n", (u_int)md->md_version); 205 printf(" Device name: %s\n", md->md_name); 206 printf(" Block size: %u\n", (u_int)md->md_bsize); 207 printf(" Cache size: %u\n", (u_int)md->md_size); 208 printf(" Provider size: %ju\n", (uintmax_t)md->md_provsize); 209} 210 211static void 212cache_dump(struct gctl_req *req) 213{ 214 struct g_cache_metadata md, tmpmd; 215 const char *name; 216 int error, i, nargs; 217 218 nargs = gctl_get_int(req, "nargs"); 219 if (nargs < 1) { 220 gctl_error(req, "Too few arguments."); 221 return; 222 } 223 224 for (i = 0; i < nargs; i++) { 225 name = gctl_get_ascii(req, "arg%d", i); 226 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 227 G_CACHE_MAGIC); 228 if (error != 0) { 229 fprintf(stderr, "Can't read metadata from %s: %s.\n", 230 name, strerror(error)); 231 gctl_error(req, "Not fully done."); 232 continue; 233 } 234 cache_metadata_decode((u_char *)&tmpmd, &md); 235 printf("Metadata on %s:\n", name); 236 cache_metadata_dump(&md); 237 printf("\n"); 238 } 239} 240