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/param.h> 30 #include <errno.h> 31 #include <paths.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <stdint.h> 35 #include <string.h> 36 #include <strings.h> 37 #include <assert.h> 38 #include <libgeom.h> 39 #include <geom/stripe/g_stripe.h> 40 41 #include "core/geom.h" 42 #include "misc/subr.h" 43 44 45 uint32_t lib_version = G_LIB_VERSION; 46 uint32_t version = G_STRIPE_VERSION; 47 48 #define GSTRIPE_STRIPESIZE "65536" 49 50 static void stripe_main(struct gctl_req *req, unsigned flags); 51 static void stripe_clear(struct gctl_req *req); 52 static void stripe_dump(struct gctl_req *req); 53 static void stripe_label(struct gctl_req *req); 54 55 struct g_command class_commands[] = { 56 { "clear", G_FLAG_VERBOSE, stripe_main, G_NULL_OPTS, 57 "[-v] prov ..." 58 }, 59 { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, 60 { 61 { 's', "stripesize", GSTRIPE_STRIPESIZE, G_TYPE_NUMBER }, 62 G_OPT_SENTINEL 63 }, 64 "[-v] [-s stripesize] name prov prov ..." 65 }, 66 { "destroy", G_FLAG_VERBOSE, NULL, 67 { 68 { 'f', "force", NULL, G_TYPE_BOOL }, 69 G_OPT_SENTINEL 70 }, 71 "[-fv] name ..." 72 }, 73 { "dump", 0, stripe_main, G_NULL_OPTS, 74 "prov ..." 75 }, 76 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, stripe_main, 77 { 78 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 79 { 's', "stripesize", GSTRIPE_STRIPESIZE, G_TYPE_NUMBER }, 80 G_OPT_SENTINEL 81 }, 82 "[-hv] [-s stripesize] name prov prov ..." 83 }, 84 { "stop", G_FLAG_VERBOSE, NULL, 85 { 86 { 'f', "force", NULL, G_TYPE_BOOL }, 87 G_OPT_SENTINEL 88 }, 89 "[-fv] name ..." 90 }, 91 G_CMD_SENTINEL 92 }; 93 94 static int verbose = 0; 95 96 static void 97 stripe_main(struct gctl_req *req, unsigned flags) 98 { 99 const char *name; 100 101 if ((flags & G_FLAG_VERBOSE) != 0) 102 verbose = 1; 103 104 name = gctl_get_ascii(req, "verb"); 105 if (name == NULL) { 106 gctl_error(req, "No '%s' argument.", "verb"); 107 return; 108 } 109 if (strcmp(name, "label") == 0) 110 stripe_label(req); 111 else if (strcmp(name, "clear") == 0) 112 stripe_clear(req); 113 else if (strcmp(name, "dump") == 0) 114 stripe_dump(req); 115 else 116 gctl_error(req, "Unknown command: %s.", name); 117 } 118 119 static void 120 stripe_label(struct gctl_req *req) 121 { 122 struct g_stripe_metadata md; 123 intmax_t stripesize; 124 off_t compsize, msize; 125 u_char sector[512]; 126 unsigned ssize, secsize; 127 const char *name; 128 int error, i, nargs, hardcode; 129 130 bzero(sector, sizeof(sector)); 131 nargs = gctl_get_int(req, "nargs"); 132 if (nargs < 3) { 133 gctl_error(req, "Too few arguments."); 134 return; 135 } 136 hardcode = gctl_get_int(req, "hardcode"); 137 138 /* 139 * Clear last sector first to spoil all components if device exists. 140 */ 141 compsize = 0; 142 secsize = 0; 143 for (i = 1; i < nargs; i++) { 144 name = gctl_get_ascii(req, "arg%d", i); 145 msize = g_get_mediasize(name); 146 ssize = g_get_sectorsize(name); 147 if (msize == 0 || ssize == 0) { 148 gctl_error(req, "Can't get informations about %s: %s.", 149 name, strerror(errno)); 150 return; 151 } 152 msize -= ssize; 153 if (compsize == 0 || (compsize > 0 && msize < compsize)) 154 compsize = msize; 155 if (secsize == 0) 156 secsize = ssize; 157 else 158 secsize = g_lcm(secsize, ssize); 159 160 error = g_metadata_clear(name, NULL); 161 if (error != 0) { 162 gctl_error(req, "Can't store metadata on %s: %s.", name, 163 strerror(error)); 164 return; 165 } 166 } 167 168 strlcpy(md.md_magic, G_STRIPE_MAGIC, sizeof(md.md_magic)); 169 md.md_version = G_STRIPE_VERSION; 170 name = gctl_get_ascii(req, "arg0"); 171 strlcpy(md.md_name, name, sizeof(md.md_name)); 172 md.md_id = arc4random(); 173 md.md_all = nargs - 1; 174 stripesize = gctl_get_intmax(req, "stripesize"); 175 if ((stripesize % secsize) != 0) { 176 gctl_error(req, "Stripesize should be multiple of %u.", 177 secsize); 178 return; 179 } 180 md.md_stripesize = stripesize; 181 182 /* 183 * Ok, store metadata. 184 */ 185 for (i = 1; i < nargs; i++) { 186 name = gctl_get_ascii(req, "arg%d", i); 187 msize = g_get_mediasize(name); 188 ssize = g_get_sectorsize(name); 189 if (compsize < msize - ssize) { 190 fprintf(stderr, 191 "warning: %s: only %jd bytes from %jd bytes used.\n", 192 name, (intmax_t)compsize, (intmax_t)(msize - ssize)); 193 } 194 195 md.md_no = i - 1; 196 md.md_provsize = msize; 197 if (!hardcode) 198 bzero(md.md_provider, sizeof(md.md_provider)); 199 else { 200 if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 201 name += sizeof(_PATH_DEV) - 1; 202 strlcpy(md.md_provider, name, sizeof(md.md_provider)); 203 } 204 stripe_metadata_encode(&md, sector); 205 error = g_metadata_store(name, sector, sizeof(sector)); 206 if (error != 0) { 207 fprintf(stderr, "Can't store metadata on %s: %s.\n", 208 name, strerror(error)); 209 gctl_error(req, "Not fully done."); 210 continue; 211 } 212 if (verbose) 213 printf("Metadata value stored on %s.\n", name); 214 } 215 } 216 217 static void 218 stripe_clear(struct gctl_req *req) 219 { 220 const char *name; 221 int error, i, nargs; 222 223 nargs = gctl_get_int(req, "nargs"); 224 if (nargs < 1) { 225 gctl_error(req, "Too few arguments."); 226 return; 227 } 228 229 for (i = 0; i < nargs; i++) { 230 name = gctl_get_ascii(req, "arg%d", i); 231 error = g_metadata_clear(name, G_STRIPE_MAGIC); 232 if (error != 0) { 233 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 234 name, strerror(error)); 235 gctl_error(req, "Not fully done."); 236 continue; 237 } 238 if (verbose) 239 printf("Metadata cleared on %s.\n", name); 240 } 241 } 242 243 static void 244 stripe_metadata_dump(const struct g_stripe_metadata *md) 245 { 246 247 printf(" Magic string: %s\n", md->md_magic); 248 printf(" Metadata version: %u\n", (u_int)md->md_version); 249 printf(" Device name: %s\n", md->md_name); 250 printf(" Device ID: %u\n", (u_int)md->md_id); 251 printf(" Disk number: %u\n", (u_int)md->md_no); 252 printf("Total number of disks: %u\n", (u_int)md->md_all); 253 printf(" Stripe size: %u\n", (u_int)md->md_stripesize); 254 printf(" Hardcoded provider: %s\n", md->md_provider); 255 } 256 257 static void 258 stripe_dump(struct gctl_req *req) 259 { 260 struct g_stripe_metadata md, tmpmd; 261 const char *name; 262 int error, i, nargs; 263 264 nargs = gctl_get_int(req, "nargs"); 265 if (nargs < 1) { 266 gctl_error(req, "Too few arguments."); 267 return; 268 } 269 270 for (i = 0; i < nargs; i++) { 271 name = gctl_get_ascii(req, "arg%d", i); 272 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 273 G_STRIPE_MAGIC); 274 if (error != 0) { 275 fprintf(stderr, "Can't read metadata from %s: %s.\n", 276 name, strerror(error)); 277 gctl_error(req, "Not fully done."); 278 continue; 279 } 280 stripe_metadata_decode((u_char *)&tmpmd, &md); 281 printf("Metadata on %s:\n", name); 282 stripe_metadata_dump(&md); 283 printf("\n"); 284 } 285 } 286