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 <stdio.h> 32 #include <stdlib.h> 33 #include <string.h> 34 #include <strings.h> 35 #include <assert.h> 36 #include <libgeom.h> 37 #include <geom/label/g_label.h> 38 39 #include "core/geom.h" 40 #include "misc/subr.h" 41 42 #ifdef STATIC_GEOM_CLASSES 43 #define PUBSYM(x) glabel_##x 44 #else 45 #define PUBSYM(x) x 46 #endif 47 48 uint32_t PUBSYM(lib_version) = G_LIB_VERSION; 49 uint32_t PUBSYM(version) = G_LABEL_VERSION; 50 51 static void label_main(struct gctl_req *req, unsigned flags); 52 static void label_clear(struct gctl_req *req); 53 static void label_dump(struct gctl_req *req); 54 static void label_label(struct gctl_req *req); 55 static void label_refresh(struct gctl_req *req); 56 57 struct g_command PUBSYM(class_commands)[] = { 58 { "clear", G_FLAG_VERBOSE, label_main, G_NULL_OPTS, 59 "[-v] dev ..." 60 }, 61 { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, G_NULL_OPTS, 62 "[-v] name dev" 63 }, 64 { "destroy", G_FLAG_VERBOSE, NULL, 65 { 66 { 'f', "force", NULL, G_TYPE_BOOL }, 67 G_OPT_SENTINEL 68 }, 69 "[-fv] name ..." 70 }, 71 { "dump", 0, label_main, G_NULL_OPTS, 72 "dev ..." 73 }, 74 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, label_main, G_NULL_OPTS, 75 "[-v] name dev" 76 }, 77 { "refresh", 0, label_main, G_NULL_OPTS, 78 "dev ..." 79 }, 80 { "stop", G_FLAG_VERBOSE, NULL, 81 { 82 { 'f', "force", NULL, G_TYPE_BOOL }, 83 G_OPT_SENTINEL 84 }, 85 "[-fv] name ..." 86 }, 87 G_CMD_SENTINEL 88 }; 89 90 static int verbose = 0; 91 92 static void 93 label_main(struct gctl_req *req, unsigned flags) 94 { 95 const char *name; 96 97 if ((flags & G_FLAG_VERBOSE) != 0) 98 verbose = 1; 99 100 name = gctl_get_ascii(req, "verb"); 101 if (name == NULL) { 102 gctl_error(req, "No '%s' argument.", "verb"); 103 return; 104 } 105 if (strcmp(name, "label") == 0) 106 label_label(req); 107 else if (strcmp(name, "clear") == 0) 108 label_clear(req); 109 else if (strcmp(name, "dump") == 0) 110 label_dump(req); 111 else if (strcmp(name, "refresh") == 0) 112 label_refresh(req); 113 else 114 gctl_error(req, "Unknown command: %s.", name); 115 } 116 117 static void 118 label_label(struct gctl_req *req) 119 { 120 struct g_label_metadata md; 121 const char *name, *label; 122 u_char sector[512]; 123 int error, nargs; 124 125 bzero(sector, sizeof(sector)); 126 nargs = gctl_get_int(req, "nargs"); 127 if (nargs != 2) { 128 gctl_error(req, "Invalid number of arguments."); 129 return; 130 } 131 132 /* 133 * Clear last sector first to spoil all components if device exists. 134 */ 135 name = gctl_get_ascii(req, "arg1"); 136 error = g_metadata_clear(name, NULL); 137 if (error != 0) { 138 gctl_error(req, "Can't store metadata on %s: %s.", name, 139 strerror(error)); 140 return; 141 } 142 143 strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic)); 144 md.md_version = G_LABEL_VERSION; 145 label = gctl_get_ascii(req, "arg0"); 146 bzero(md.md_label, sizeof(md.md_label)); 147 strlcpy(md.md_label, label, sizeof(md.md_label)); 148 md.md_provsize = g_get_mediasize(name); 149 if (md.md_provsize == 0) { 150 gctl_error(req, "Can't get mediasize of %s: %s.", name, 151 strerror(errno)); 152 return; 153 } 154 155 /* 156 * Ok, store metadata. 157 */ 158 label_metadata_encode(&md, sector); 159 error = g_metadata_store(name, sector, sizeof(sector)); 160 if (error != 0) { 161 fprintf(stderr, "Can't store metadata on %s: %s.\n", name, 162 strerror(error)); 163 gctl_error(req, "Not done."); 164 } 165 if (verbose) 166 printf("Metadata value stored on %s.\n", name); 167 } 168 169 static void 170 label_clear(struct gctl_req *req) 171 { 172 const char *name; 173 int error, i, nargs; 174 175 nargs = gctl_get_int(req, "nargs"); 176 if (nargs < 1) { 177 gctl_error(req, "Too few arguments."); 178 return; 179 } 180 181 for (i = 0; i < nargs; i++) { 182 name = gctl_get_ascii(req, "arg%d", i); 183 error = g_metadata_clear(name, G_LABEL_MAGIC); 184 if (error != 0) { 185 fprintf(stderr, "Can't clear 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 cleared on %s.\n", name); 192 } 193 } 194 195 static void 196 label_metadata_dump(const struct g_label_metadata *md) 197 { 198 199 printf(" Magic string: %s\n", md->md_magic); 200 printf("Metadata version: %u\n", (u_int)md->md_version); 201 printf(" Label: %s\n", md->md_label); 202 } 203 204 static void 205 label_dump(struct gctl_req *req) 206 { 207 struct g_label_metadata md, tmpmd; 208 const char *name; 209 int error, i, nargs; 210 211 nargs = gctl_get_int(req, "nargs"); 212 if (nargs < 1) { 213 gctl_error(req, "Too few arguments."); 214 return; 215 } 216 217 for (i = 0; i < nargs; i++) { 218 name = gctl_get_ascii(req, "arg%d", i); 219 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 220 G_LABEL_MAGIC); 221 if (error != 0) { 222 fprintf(stderr, "Can't read metadata from %s: %s.\n", 223 name, strerror(error)); 224 gctl_error(req, "Not fully done."); 225 continue; 226 } 227 label_metadata_decode((u_char *)&tmpmd, &md); 228 printf("Metadata on %s:\n", name); 229 label_metadata_dump(&md); 230 printf("\n"); 231 } 232 } 233 234 static void 235 label_refresh(struct gctl_req *req) 236 { 237 const char *name; 238 int i, nargs, fd; 239 240 nargs = gctl_get_int(req, "nargs"); 241 if (nargs < 1) { 242 gctl_error(req, "Too few arguments."); 243 return; 244 } 245 246 for (i = 0; i < nargs; i++) { 247 name = gctl_get_ascii(req, "arg%d", i); 248 fd = g_open(name, 1); 249 if (fd == -1) { 250 printf("Can't refresh metadata from %s: %s.\n", 251 name, strerror(errno)); 252 } else { 253 printf("Metadata from %s refreshed.\n", name); 254 (void)g_close(fd); 255 } 256 } 257 } 258