1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <strings.h> 38 #include <assert.h> 39 #include <libgeom.h> 40 #include <geom/label/g_label.h> 41 42 #include "core/geom.h" 43 #include "misc/subr.h" 44 45 #ifdef STATIC_GEOM_CLASSES 46 #define PUBSYM(x) glabel_##x 47 #else 48 #define PUBSYM(x) x 49 #endif 50 51 uint32_t PUBSYM(lib_version) = G_LIB_VERSION; 52 uint32_t PUBSYM(version) = G_LABEL_VERSION; 53 54 static void label_main(struct gctl_req *req, unsigned flags); 55 static void label_clear(struct gctl_req *req); 56 static void label_dump(struct gctl_req *req); 57 static void label_label(struct gctl_req *req); 58 static void label_refresh(struct gctl_req *req); 59 60 struct g_command PUBSYM(class_commands)[] = { 61 { "clear", G_FLAG_VERBOSE, label_main, G_NULL_OPTS, 62 "[-v] dev ..." 63 }, 64 { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, G_NULL_OPTS, 65 "[-v] name dev" 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, label_main, G_NULL_OPTS, 75 "dev ..." 76 }, 77 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, label_main, G_NULL_OPTS, 78 "[-v] name dev" 79 }, 80 { "refresh", 0, label_main, G_NULL_OPTS, 81 "dev ..." 82 }, 83 { "stop", G_FLAG_VERBOSE, NULL, 84 { 85 { 'f', "force", NULL, G_TYPE_BOOL }, 86 G_OPT_SENTINEL 87 }, 88 "[-fv] name ..." 89 }, 90 G_CMD_SENTINEL 91 }; 92 93 static int verbose = 0; 94 95 static void 96 label_main(struct gctl_req *req, unsigned flags) 97 { 98 const char *name; 99 100 if ((flags & G_FLAG_VERBOSE) != 0) 101 verbose = 1; 102 103 name = gctl_get_ascii(req, "verb"); 104 if (name == NULL) { 105 gctl_error(req, "No '%s' argument.", "verb"); 106 return; 107 } 108 if (strcmp(name, "label") == 0) 109 label_label(req); 110 else if (strcmp(name, "clear") == 0) 111 label_clear(req); 112 else if (strcmp(name, "dump") == 0) 113 label_dump(req); 114 else if (strcmp(name, "refresh") == 0) 115 label_refresh(req); 116 else 117 gctl_error(req, "Unknown command: %s.", name); 118 } 119 120 static void 121 label_label(struct gctl_req *req) 122 { 123 struct g_label_metadata md; 124 const char *name, *label; 125 u_char sector[512]; 126 int error, nargs; 127 128 bzero(sector, sizeof(sector)); 129 nargs = gctl_get_int(req, "nargs"); 130 if (nargs != 2) { 131 gctl_error(req, "Invalid number of arguments."); 132 return; 133 } 134 135 /* 136 * Clear last sector first to spoil all components if device exists. 137 */ 138 name = gctl_get_ascii(req, "arg1"); 139 error = g_metadata_clear(name, NULL); 140 if (error != 0) { 141 gctl_error(req, "Can't store metadata on %s: %s.", name, 142 strerror(error)); 143 return; 144 } 145 146 strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic)); 147 md.md_version = G_LABEL_VERSION; 148 label = gctl_get_ascii(req, "arg0"); 149 bzero(md.md_label, sizeof(md.md_label)); 150 strlcpy(md.md_label, label, sizeof(md.md_label)); 151 md.md_provsize = g_get_mediasize(name); 152 if (md.md_provsize == 0) { 153 gctl_error(req, "Can't get mediasize of %s: %s.", name, 154 strerror(errno)); 155 return; 156 } 157 158 /* 159 * Ok, store metadata. 160 */ 161 label_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", name, 165 strerror(error)); 166 gctl_error(req, "Not done."); 167 } 168 if (verbose) 169 printf("Metadata value stored on %s.\n", name); 170 } 171 172 static void 173 label_clear(struct gctl_req *req) 174 { 175 const char *name; 176 int error, i, nargs; 177 178 nargs = gctl_get_int(req, "nargs"); 179 if (nargs < 1) { 180 gctl_error(req, "Too few arguments."); 181 return; 182 } 183 184 for (i = 0; i < nargs; i++) { 185 name = gctl_get_ascii(req, "arg%d", i); 186 error = g_metadata_clear(name, G_LABEL_MAGIC); 187 if (error != 0) { 188 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 189 name, strerror(error)); 190 gctl_error(req, "Not fully done."); 191 continue; 192 } 193 if (verbose) 194 printf("Metadata cleared on %s.\n", name); 195 } 196 } 197 198 static void 199 label_metadata_dump(const struct g_label_metadata *md) 200 { 201 202 printf(" Magic string: %s\n", md->md_magic); 203 printf("Metadata version: %u\n", (u_int)md->md_version); 204 printf(" Label: %s\n", md->md_label); 205 } 206 207 static void 208 label_dump(struct gctl_req *req) 209 { 210 struct g_label_metadata md, tmpmd; 211 const char *name; 212 int error, i, nargs; 213 214 nargs = gctl_get_int(req, "nargs"); 215 if (nargs < 1) { 216 gctl_error(req, "Too few arguments."); 217 return; 218 } 219 220 for (i = 0; i < nargs; i++) { 221 name = gctl_get_ascii(req, "arg%d", i); 222 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 223 G_LABEL_MAGIC); 224 if (error != 0) { 225 fprintf(stderr, "Can't read metadata from %s: %s.\n", 226 name, strerror(error)); 227 gctl_error(req, "Not fully done."); 228 continue; 229 } 230 label_metadata_decode((u_char *)&tmpmd, &md); 231 printf("Metadata on %s:\n", name); 232 label_metadata_dump(&md); 233 printf("\n"); 234 } 235 } 236 237 static void 238 label_refresh(struct gctl_req *req) 239 { 240 const char *name; 241 int i, nargs, fd; 242 243 nargs = gctl_get_int(req, "nargs"); 244 if (nargs < 1) { 245 gctl_error(req, "Too few arguments."); 246 return; 247 } 248 249 for (i = 0; i < nargs; i++) { 250 name = gctl_get_ascii(req, "arg%d", i); 251 fd = g_open(name, 1); 252 if (fd == -1) { 253 printf("Can't refresh metadata from %s: %s.\n", 254 name, strerror(errno)); 255 } else { 256 printf("Metadata from %s refreshed.\n", name); 257 (void)g_close(fd); 258 } 259 } 260 } 261