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 <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <strings.h> 36 #include <assert.h> 37 #include <libgeom.h> 38 #include <geom/label/g_label.h> 39 40 #include "core/geom.h" 41 #include "misc/subr.h" 42 43 #ifdef STATIC_GEOM_CLASSES 44 #define PUBSYM(x) glabel_##x 45 #else 46 #define PUBSYM(x) x 47 #endif 48 49 uint32_t PUBSYM(lib_version) = G_LIB_VERSION; 50 uint32_t PUBSYM(version) = G_LABEL_VERSION; 51 52 static void label_main(struct gctl_req *req, unsigned flags); 53 static void label_clear(struct gctl_req *req); 54 static void label_dump(struct gctl_req *req); 55 static void label_label(struct gctl_req *req); 56 static void label_refresh(struct gctl_req *req); 57 58 struct g_command PUBSYM(class_commands)[] = { 59 { "clear", G_FLAG_VERBOSE, label_main, G_NULL_OPTS, 60 "[-v] dev ..." 61 }, 62 { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, G_NULL_OPTS, 63 "[-v] name dev" 64 }, 65 { "destroy", G_FLAG_VERBOSE, NULL, 66 { 67 { 'f', "force", NULL, G_TYPE_BOOL }, 68 G_OPT_SENTINEL 69 }, 70 "[-fv] name ..." 71 }, 72 { "dump", 0, label_main, G_NULL_OPTS, 73 "dev ..." 74 }, 75 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, label_main, G_NULL_OPTS, 76 "[-v] name dev" 77 }, 78 { "refresh", 0, label_main, G_NULL_OPTS, 79 "dev ..." 80 }, 81 { "stop", G_FLAG_VERBOSE, NULL, 82 { 83 { 'f', "force", NULL, G_TYPE_BOOL }, 84 G_OPT_SENTINEL 85 }, 86 "[-fv] name ..." 87 }, 88 G_CMD_SENTINEL 89 }; 90 91 static int verbose = 0; 92 93 static void 94 label_main(struct gctl_req *req, unsigned flags) 95 { 96 const char *name; 97 98 if ((flags & G_FLAG_VERBOSE) != 0) 99 verbose = 1; 100 101 name = gctl_get_ascii(req, "verb"); 102 if (name == NULL) { 103 gctl_error(req, "No '%s' argument.", "verb"); 104 return; 105 } 106 if (strcmp(name, "label") == 0) 107 label_label(req); 108 else if (strcmp(name, "clear") == 0) 109 label_clear(req); 110 else if (strcmp(name, "dump") == 0) 111 label_dump(req); 112 else if (strcmp(name, "refresh") == 0) 113 label_refresh(req); 114 else 115 gctl_error(req, "Unknown command: %s.", name); 116 } 117 118 static void 119 label_label(struct gctl_req *req) 120 { 121 struct g_label_metadata md; 122 const char *name, *label; 123 u_char sector[512]; 124 int error, nargs; 125 126 bzero(sector, sizeof(sector)); 127 nargs = gctl_get_int(req, "nargs"); 128 if (nargs != 2) { 129 gctl_error(req, "Invalid number of arguments."); 130 return; 131 } 132 133 /* 134 * Clear last sector first to spoil all components if device exists. 135 */ 136 name = gctl_get_ascii(req, "arg1"); 137 error = g_metadata_clear(name, NULL); 138 if (error != 0) { 139 gctl_error(req, "Can't store metadata on %s: %s.", name, 140 strerror(error)); 141 return; 142 } 143 144 strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic)); 145 md.md_version = G_LABEL_VERSION; 146 label = gctl_get_ascii(req, "arg0"); 147 bzero(md.md_label, sizeof(md.md_label)); 148 strlcpy(md.md_label, label, sizeof(md.md_label)); 149 md.md_provsize = g_get_mediasize(name); 150 if (md.md_provsize == 0) { 151 gctl_error(req, "Can't get mediasize of %s: %s.", name, 152 strerror(errno)); 153 return; 154 } 155 156 /* 157 * Ok, store metadata. 158 */ 159 label_metadata_encode(&md, sector); 160 error = g_metadata_store(name, sector, sizeof(sector)); 161 if (error != 0) { 162 fprintf(stderr, "Can't store metadata on %s: %s.\n", name, 163 strerror(error)); 164 gctl_error(req, "Not done."); 165 } 166 if (verbose) 167 printf("Metadata value stored on %s.\n", name); 168 } 169 170 static void 171 label_clear(struct gctl_req *req) 172 { 173 const char *name; 174 int error, i, nargs; 175 176 nargs = gctl_get_int(req, "nargs"); 177 if (nargs < 1) { 178 gctl_error(req, "Too few arguments."); 179 return; 180 } 181 182 for (i = 0; i < nargs; i++) { 183 name = gctl_get_ascii(req, "arg%d", i); 184 error = g_metadata_clear(name, G_LABEL_MAGIC); 185 if (error != 0) { 186 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 187 name, strerror(error)); 188 gctl_error(req, "Not fully done."); 189 continue; 190 } 191 if (verbose) 192 printf("Metadata cleared on %s.\n", name); 193 } 194 } 195 196 static void 197 label_metadata_dump(const struct g_label_metadata *md) 198 { 199 200 printf(" Magic string: %s\n", md->md_magic); 201 printf("Metadata version: %u\n", (u_int)md->md_version); 202 printf(" Label: %s\n", md->md_label); 203 } 204 205 static void 206 label_dump(struct gctl_req *req) 207 { 208 struct g_label_metadata md, tmpmd; 209 const char *name; 210 int error, i, nargs; 211 212 nargs = gctl_get_int(req, "nargs"); 213 if (nargs < 1) { 214 gctl_error(req, "Too few arguments."); 215 return; 216 } 217 218 for (i = 0; i < nargs; i++) { 219 name = gctl_get_ascii(req, "arg%d", i); 220 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 221 G_LABEL_MAGIC); 222 if (error != 0) { 223 fprintf(stderr, "Can't read metadata from %s: %s.\n", 224 name, strerror(error)); 225 gctl_error(req, "Not fully done."); 226 continue; 227 } 228 label_metadata_decode((u_char *)&tmpmd, &md); 229 printf("Metadata on %s:\n", name); 230 label_metadata_dump(&md); 231 printf("\n"); 232 } 233 } 234 235 static void 236 label_refresh(struct gctl_req *req) 237 { 238 const char *name; 239 int i, nargs, fd; 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 fd = g_open(name, 1); 250 if (fd == -1) { 251 printf("Can't refresh metadata from %s: %s.\n", 252 name, strerror(errno)); 253 } else { 254 printf("Metadata from %s refreshed.\n", name); 255 (void)g_close(fd); 256 } 257 } 258 } 259