1/*- 2 * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 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 49uint32_t PUBSYM(lib_version) = G_LIB_VERSION; 50uint32_t PUBSYM(version) = G_LABEL_VERSION; 51 52static void label_main(struct gctl_req *req, unsigned flags); 53static void label_clear(struct gctl_req *req); 54static void label_dump(struct gctl_req *req); 55static void label_label(struct gctl_req *req); 56 57struct 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 { "stop", G_FLAG_VERBOSE, NULL, 78 { 79 { 'f', "force", NULL, G_TYPE_BOOL }, 80 G_OPT_SENTINEL 81 }, 82 "[-fv] name ..." 83 }, 84 G_CMD_SENTINEL 85}; 86 87static int verbose = 0; 88 89static void 90label_main(struct gctl_req *req, unsigned flags) 91{ 92 const char *name; 93 94 if ((flags & G_FLAG_VERBOSE) != 0) 95 verbose = 1; 96 97 name = gctl_get_ascii(req, "verb"); 98 if (name == NULL) { 99 gctl_error(req, "No '%s' argument.", "verb"); 100 return; 101 } 102 if (strcmp(name, "label") == 0) 103 label_label(req); 104 else if (strcmp(name, "clear") == 0) 105 label_clear(req); 106 else if (strcmp(name, "dump") == 0) 107 label_dump(req); 108 else 109 gctl_error(req, "Unknown command: %s.", name); 110} 111 112static void 113label_label(struct gctl_req *req) 114{ 115 struct g_label_metadata md; 116 const char *name, *label; 117 u_char sector[512]; 118 int error, nargs; 119 120 nargs = gctl_get_int(req, "nargs"); 121 if (nargs != 2) { 122 gctl_error(req, "Invalid number of arguments."); 123 return; 124 } 125 126 /* 127 * Clear last sector first to spoil all components if device exists. 128 */ 129 name = gctl_get_ascii(req, "arg1"); 130 error = g_metadata_clear(name, NULL); 131 if (error != 0) { 132 gctl_error(req, "Can't store metadata on %s: %s.", name, 133 strerror(error)); 134 return; 135 } 136 137 strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic)); 138 md.md_version = G_LABEL_VERSION; 139 label = gctl_get_ascii(req, "arg0"); 140 strlcpy(md.md_label, label, sizeof(md.md_label)); 141 md.md_provsize = g_get_mediasize(name); 142 if (md.md_provsize == 0) { 143 gctl_error(req, "Can't get mediasize of %s: %s.", name, 144 strerror(errno)); 145 return; 146 } 147 148 /* 149 * Ok, store metadata. 150 */ 151 label_metadata_encode(&md, sector); 152 error = g_metadata_store(name, sector, sizeof(sector)); 153 if (error != 0) { 154 fprintf(stderr, "Can't store metadata on %s: %s.\n", name, 155 strerror(error)); 156 gctl_error(req, "Not done."); 157 } 158 if (verbose) 159 printf("Metadata value stored on %s.\n", name); 160} 161 162static void 163label_clear(struct gctl_req *req) 164{ 165 const char *name; 166 int error, i, nargs; 167 168 nargs = gctl_get_int(req, "nargs"); 169 if (nargs < 1) { 170 gctl_error(req, "Too few arguments."); 171 return; 172 } 173 174 for (i = 0; i < nargs; i++) { 175 name = gctl_get_ascii(req, "arg%d", i); 176 error = g_metadata_clear(name, G_LABEL_MAGIC); 177 if (error != 0) { 178 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 179 name, strerror(error)); 180 gctl_error(req, "Not fully done."); 181 continue; 182 } 183 if (verbose) 184 printf("Metadata cleared on %s.\n", name); 185 } 186} 187 188static void 189label_metadata_dump(const struct g_label_metadata *md) 190{ 191 192 printf(" Magic string: %s\n", md->md_magic); 193 printf("Metadata version: %u\n", (u_int)md->md_version); 194 printf(" Label: %s\n", md->md_label); 195} 196 197static void 198label_dump(struct gctl_req *req) 199{ 200 struct g_label_metadata md, tmpmd; 201 const char *name; 202 int error, i, nargs; 203 204 nargs = gctl_get_int(req, "nargs"); 205 if (nargs < 1) { 206 gctl_error(req, "Too few arguments."); 207 return; 208 } 209 210 for (i = 0; i < nargs; i++) { 211 name = gctl_get_ascii(req, "arg%d", i); 212 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 213 G_LABEL_MAGIC); 214 if (error != 0) { 215 fprintf(stderr, "Can't read metadata from %s: %s.\n", 216 name, strerror(error)); 217 gctl_error(req, "Not fully done."); 218 continue; 219 } 220 label_metadata_decode((u_char *)&tmpmd, &md); 221 printf("Metadata on %s:\n", name); 222 label_metadata_dump(&md); 223 printf("\n"); 224 } 225} 226