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/cdefs.h> 30 #include <sys/param.h> 31 #include <errno.h> 32 #include <paths.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <stdint.h> 36 #include <string.h> 37 #include <strings.h> 38 #include <assert.h> 39 #include <libgeom.h> 40 #include <geom/stripe/g_stripe.h> 41 42 #include "core/geom.h" 43 #include "misc/subr.h" 44 45 46 uint32_t lib_version = G_LIB_VERSION; 47 uint32_t version = G_STRIPE_VERSION; 48 49 #define GSTRIPE_STRIPESIZE "65536" 50 51 static void stripe_main(struct gctl_req *req, unsigned flags); 52 static void stripe_clear(struct gctl_req *req); 53 static void stripe_dump(struct gctl_req *req); 54 static void stripe_label(struct gctl_req *req); 55 56 struct g_command class_commands[] = { 57 { "clear", G_FLAG_VERBOSE, stripe_main, G_NULL_OPTS, 58 "[-v] prov ..." 59 }, 60 { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, 61 { 62 { 's', "stripesize", GSTRIPE_STRIPESIZE, G_TYPE_NUMBER }, 63 G_OPT_SENTINEL 64 }, 65 "[-v] [-s stripesize] name prov prov ..." 66 }, 67 { "destroy", G_FLAG_VERBOSE, NULL, 68 { 69 { 'f', "force", NULL, G_TYPE_BOOL }, 70 G_OPT_SENTINEL 71 }, 72 "[-fv] name ..." 73 }, 74 { "dump", 0, stripe_main, G_NULL_OPTS, 75 "prov ..." 76 }, 77 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, stripe_main, 78 { 79 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 80 { 's', "stripesize", GSTRIPE_STRIPESIZE, G_TYPE_NUMBER }, 81 G_OPT_SENTINEL 82 }, 83 "[-hv] [-s stripesize] name prov prov ..." 84 }, 85 { "stop", G_FLAG_VERBOSE, NULL, 86 { 87 { 'f', "force", NULL, G_TYPE_BOOL }, 88 G_OPT_SENTINEL 89 }, 90 "[-fv] name ..." 91 }, 92 G_CMD_SENTINEL 93 }; 94 95 static int verbose = 0; 96 97 static void 98 stripe_main(struct gctl_req *req, unsigned flags) 99 { 100 const char *name; 101 102 if ((flags & G_FLAG_VERBOSE) != 0) 103 verbose = 1; 104 105 name = gctl_get_ascii(req, "verb"); 106 if (name == NULL) { 107 gctl_error(req, "No '%s' argument.", "verb"); 108 return; 109 } 110 if (strcmp(name, "label") == 0) 111 stripe_label(req); 112 else if (strcmp(name, "clear") == 0) 113 stripe_clear(req); 114 else if (strcmp(name, "dump") == 0) 115 stripe_dump(req); 116 else 117 gctl_error(req, "Unknown command: %s.", name); 118 } 119 120 static void 121 stripe_label(struct gctl_req *req) 122 { 123 struct g_stripe_metadata md; 124 intmax_t stripesize; 125 off_t compsize, msize; 126 u_char sector[512]; 127 unsigned ssize, secsize; 128 const char *name; 129 int error, i, nargs, hardcode; 130 131 bzero(sector, sizeof(sector)); 132 nargs = gctl_get_int(req, "nargs"); 133 if (nargs < 3) { 134 gctl_error(req, "Too few arguments."); 135 return; 136 } 137 hardcode = gctl_get_int(req, "hardcode"); 138 139 /* 140 * Clear last sector first to spoil all components if device exists. 141 */ 142 compsize = 0; 143 secsize = 0; 144 for (i = 1; i < nargs; i++) { 145 name = gctl_get_ascii(req, "arg%d", i); 146 msize = g_get_mediasize(name); 147 ssize = g_get_sectorsize(name); 148 if (msize == 0 || ssize == 0) { 149 gctl_error(req, "Can't get informations about %s: %s.", 150 name, strerror(errno)); 151 return; 152 } 153 msize -= ssize; 154 if (compsize == 0 || (compsize > 0 && msize < compsize)) 155 compsize = msize; 156 if (secsize == 0) 157 secsize = ssize; 158 else 159 secsize = g_lcm(secsize, ssize); 160 161 error = g_metadata_clear(name, NULL); 162 if (error != 0) { 163 gctl_error(req, "Can't store metadata on %s: %s.", name, 164 strerror(error)); 165 return; 166 } 167 } 168 169 strlcpy(md.md_magic, G_STRIPE_MAGIC, sizeof(md.md_magic)); 170 md.md_version = G_STRIPE_VERSION; 171 name = gctl_get_ascii(req, "arg0"); 172 strlcpy(md.md_name, name, sizeof(md.md_name)); 173 md.md_id = arc4random(); 174 md.md_all = nargs - 1; 175 stripesize = gctl_get_intmax(req, "stripesize"); 176 if ((stripesize % secsize) != 0) { 177 gctl_error(req, "Stripesize should be multiple of %u.", 178 secsize); 179 return; 180 } 181 md.md_stripesize = stripesize; 182 183 /* 184 * Ok, store metadata. 185 */ 186 for (i = 1; i < nargs; i++) { 187 name = gctl_get_ascii(req, "arg%d", i); 188 msize = g_get_mediasize(name); 189 ssize = g_get_sectorsize(name); 190 if (compsize < msize - ssize) { 191 fprintf(stderr, 192 "warning: %s: only %jd bytes from %jd bytes used.\n", 193 name, (intmax_t)compsize, (intmax_t)(msize - ssize)); 194 } 195 196 md.md_no = i - 1; 197 md.md_provsize = msize; 198 if (!hardcode) 199 bzero(md.md_provider, sizeof(md.md_provider)); 200 else { 201 if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 202 name += sizeof(_PATH_DEV) - 1; 203 strlcpy(md.md_provider, name, sizeof(md.md_provider)); 204 } 205 stripe_metadata_encode(&md, sector); 206 error = g_metadata_store(name, sector, sizeof(sector)); 207 if (error != 0) { 208 fprintf(stderr, "Can't store 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 value stored on %s.\n", name); 215 } 216 } 217 218 static void 219 stripe_clear(struct gctl_req *req) 220 { 221 const char *name; 222 int error, i, nargs; 223 224 nargs = gctl_get_int(req, "nargs"); 225 if (nargs < 1) { 226 gctl_error(req, "Too few arguments."); 227 return; 228 } 229 230 for (i = 0; i < nargs; i++) { 231 name = gctl_get_ascii(req, "arg%d", i); 232 error = g_metadata_clear(name, G_STRIPE_MAGIC); 233 if (error != 0) { 234 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 235 name, strerror(error)); 236 gctl_error(req, "Not fully done."); 237 continue; 238 } 239 if (verbose) 240 printf("Metadata cleared on %s.\n", name); 241 } 242 } 243 244 static void 245 stripe_metadata_dump(const struct g_stripe_metadata *md) 246 { 247 248 printf(" Magic string: %s\n", md->md_magic); 249 printf(" Metadata version: %u\n", (u_int)md->md_version); 250 printf(" Device name: %s\n", md->md_name); 251 printf(" Device ID: %u\n", (u_int)md->md_id); 252 printf(" Disk number: %u\n", (u_int)md->md_no); 253 printf("Total number of disks: %u\n", (u_int)md->md_all); 254 printf(" Stripe size: %u\n", (u_int)md->md_stripesize); 255 printf(" Hardcoded provider: %s\n", md->md_provider); 256 } 257 258 static void 259 stripe_dump(struct gctl_req *req) 260 { 261 struct g_stripe_metadata md, tmpmd; 262 const char *name; 263 int error, i, nargs; 264 265 nargs = gctl_get_int(req, "nargs"); 266 if (nargs < 1) { 267 gctl_error(req, "Too few arguments."); 268 return; 269 } 270 271 for (i = 0; i < nargs; i++) { 272 name = gctl_get_ascii(req, "arg%d", i); 273 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 274 G_STRIPE_MAGIC); 275 if (error != 0) { 276 fprintf(stderr, "Can't read metadata from %s: %s.\n", 277 name, strerror(error)); 278 gctl_error(req, "Not fully done."); 279 continue; 280 } 281 stripe_metadata_decode((u_char *)&tmpmd, &md); 282 printf("Metadata on %s:\n", name); 283 stripe_metadata_dump(&md); 284 printf("\n"); 285 } 286 } 287