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 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <errno.h> 34 #include <paths.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <stdint.h> 38 #include <string.h> 39 #include <strings.h> 40 #include <assert.h> 41 #include <libgeom.h> 42 #include <geom/shsec/g_shsec.h> 43 44 #include "core/geom.h" 45 #include "misc/subr.h" 46 47 48 uint32_t lib_version = G_LIB_VERSION; 49 uint32_t version = G_SHSEC_VERSION; 50 51 static void shsec_main(struct gctl_req *req, unsigned flags); 52 static void shsec_clear(struct gctl_req *req); 53 static void shsec_dump(struct gctl_req *req); 54 static void shsec_label(struct gctl_req *req); 55 56 struct g_command class_commands[] = { 57 { "clear", G_FLAG_VERBOSE, shsec_main, G_NULL_OPTS, 58 "[-v] prov ..." 59 }, 60 { "dump", 0, shsec_main, G_NULL_OPTS, 61 "prov ..." 62 }, 63 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, shsec_main, 64 { 65 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 66 G_OPT_SENTINEL 67 }, 68 "[-hv] name prov prov ..." 69 }, 70 { "stop", G_FLAG_VERBOSE, NULL, 71 { 72 { 'f', "force", NULL, G_TYPE_BOOL }, 73 G_OPT_SENTINEL 74 }, 75 "[-fv] name ..." 76 }, 77 G_CMD_SENTINEL 78 }; 79 80 static int verbose = 0; 81 82 static void 83 shsec_main(struct gctl_req *req, unsigned flags) 84 { 85 const char *name; 86 87 if ((flags & G_FLAG_VERBOSE) != 0) 88 verbose = 1; 89 90 name = gctl_get_ascii(req, "verb"); 91 if (name == NULL) { 92 gctl_error(req, "No '%s' argument.", "verb"); 93 return; 94 } 95 if (strcmp(name, "label") == 0) 96 shsec_label(req); 97 else if (strcmp(name, "clear") == 0) 98 shsec_clear(req); 99 else if (strcmp(name, "dump") == 0) 100 shsec_dump(req); 101 else 102 gctl_error(req, "Unknown command: %s.", name); 103 } 104 105 static void 106 shsec_label(struct gctl_req *req) 107 { 108 struct g_shsec_metadata md; 109 off_t compsize, msize; 110 u_char sector[512]; 111 unsigned ssize, secsize; 112 const char *name; 113 int error, i, nargs, hardcode; 114 115 bzero(sector, sizeof(sector)); 116 nargs = gctl_get_int(req, "nargs"); 117 if (nargs <= 2) { 118 gctl_error(req, "Too few arguments."); 119 return; 120 } 121 hardcode = gctl_get_int(req, "hardcode"); 122 123 /* 124 * Clear last sector first to spoil all components if device exists. 125 */ 126 compsize = 0; 127 secsize = 0; 128 for (i = 1; i < nargs; i++) { 129 name = gctl_get_ascii(req, "arg%d", i); 130 msize = g_get_mediasize(name); 131 ssize = g_get_sectorsize(name); 132 if (msize == 0 || ssize == 0) { 133 gctl_error(req, "Can't get informations about %s: %s.", 134 name, strerror(errno)); 135 return; 136 } 137 msize -= ssize; 138 if (compsize == 0 || (compsize > 0 && msize < compsize)) 139 compsize = msize; 140 if (secsize == 0) 141 secsize = ssize; 142 else 143 secsize = g_lcm(secsize, ssize); 144 145 error = g_metadata_clear(name, NULL); 146 if (error != 0) { 147 gctl_error(req, "Can't store metadata on %s: %s.", name, 148 strerror(error)); 149 return; 150 } 151 } 152 153 strlcpy(md.md_magic, G_SHSEC_MAGIC, sizeof(md.md_magic)); 154 md.md_version = G_SHSEC_VERSION; 155 name = gctl_get_ascii(req, "arg0"); 156 strlcpy(md.md_name, name, sizeof(md.md_name)); 157 md.md_id = arc4random(); 158 md.md_all = nargs - 1; 159 160 /* 161 * Ok, store metadata. 162 */ 163 for (i = 1; i < nargs; i++) { 164 name = gctl_get_ascii(req, "arg%d", i); 165 msize = g_get_mediasize(name); 166 ssize = g_get_sectorsize(name); 167 if (compsize < msize - ssize) { 168 fprintf(stderr, 169 "warning: %s: only %jd bytes from %jd bytes used.\n", 170 name, (intmax_t)compsize, (intmax_t)(msize - ssize)); 171 } 172 173 md.md_no = i - 1; 174 md.md_provsize = msize; 175 if (!hardcode) 176 bzero(md.md_provider, sizeof(md.md_provider)); 177 else { 178 if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 179 name += sizeof(_PATH_DEV) - 1; 180 strlcpy(md.md_provider, name, sizeof(md.md_provider)); 181 } 182 shsec_metadata_encode(&md, sector); 183 error = g_metadata_store(name, sector, sizeof(sector)); 184 if (error != 0) { 185 fprintf(stderr, "Can't store metadata on %s: %s.\n", 186 name, strerror(error)); 187 gctl_error(req, "Not fully done."); 188 continue; 189 } 190 if (verbose) 191 printf("Metadata value stored on %s.\n", name); 192 } 193 } 194 195 static void 196 shsec_clear(struct gctl_req *req) 197 { 198 const char *name; 199 int error, i, nargs; 200 201 nargs = gctl_get_int(req, "nargs"); 202 if (nargs < 1) { 203 gctl_error(req, "Too few arguments."); 204 return; 205 } 206 207 for (i = 0; i < nargs; i++) { 208 name = gctl_get_ascii(req, "arg%d", i); 209 error = g_metadata_clear(name, G_SHSEC_MAGIC); 210 if (error != 0) { 211 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 212 name, strerror(error)); 213 gctl_error(req, "Not fully done."); 214 continue; 215 } 216 if (verbose) 217 printf("Metadata cleared on %s.\n", name); 218 } 219 } 220 221 static void 222 shsec_metadata_dump(const struct g_shsec_metadata *md) 223 { 224 225 printf(" Magic string: %s\n", md->md_magic); 226 printf(" Metadata version: %u\n", (u_int)md->md_version); 227 printf(" Device name: %s\n", md->md_name); 228 printf(" Device ID: %u\n", (u_int)md->md_id); 229 printf(" Disk number: %u\n", (u_int)md->md_no); 230 printf("Total number of disks: %u\n", (u_int)md->md_all); 231 printf(" Hardcoded provider: %s\n", md->md_provider); 232 } 233 234 static void 235 shsec_dump(struct gctl_req *req) 236 { 237 struct g_shsec_metadata md, tmpmd; 238 const char *name; 239 int error, i, nargs; 240 241 nargs = gctl_get_int(req, "nargs"); 242 if (nargs < 1) { 243 gctl_error(req, "Too few arguments."); 244 return; 245 } 246 247 for (i = 0; i < nargs; i++) { 248 name = gctl_get_ascii(req, "arg%d", i); 249 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 250 G_SHSEC_MAGIC); 251 if (error != 0) { 252 fprintf(stderr, "Can't read metadata from %s: %s.\n", 253 name, strerror(error)); 254 gctl_error(req, "Not fully done."); 255 continue; 256 } 257 shsec_metadata_decode((u_char *)&tmpmd, &md); 258 printf("Metadata on %s:\n", name); 259 shsec_metadata_dump(&md); 260 printf("\n"); 261 } 262 } 263