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