1 /*- 2 * Copyright (c) 2004 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 * $FreeBSD$ 27 */ 28 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <unistd.h> 32 #include <fcntl.h> 33 #include <sys/param.h> 34 #include <sys/disk.h> 35 #include <sys/stat.h> 36 #include <sys/endian.h> 37 #include <sys/socket.h> 38 #include <sys/linker.h> 39 #include <sys/module.h> 40 #include <netinet/in.h> 41 #include <arpa/inet.h> 42 #include <signal.h> 43 #include <err.h> 44 #include <errno.h> 45 #include <string.h> 46 #include <strings.h> 47 #include <libgen.h> 48 #include <netdb.h> 49 #include <syslog.h> 50 #include <stdarg.h> 51 #include <libgeom.h> 52 53 #include <geom/gate/g_gate.h> 54 #include "ggate.h" 55 56 57 int g_gate_devfd = -1; 58 int g_gate_verbose = 0; 59 60 61 void 62 g_gate_vlog(int priority, const char *message, va_list ap) 63 { 64 65 if (g_gate_verbose) { 66 const char *prefix; 67 68 switch (priority) { 69 case LOG_ERR: 70 prefix = "error"; 71 break; 72 case LOG_WARNING: 73 prefix = "warning"; 74 break; 75 case LOG_NOTICE: 76 prefix = "notice"; 77 break; 78 case LOG_INFO: 79 prefix = "info"; 80 break; 81 case LOG_DEBUG: 82 prefix = "debug"; 83 break; 84 default: 85 prefix = "unknown"; 86 } 87 88 printf("%s: ", prefix); 89 vprintf(message, ap); 90 printf("\n"); 91 } else { 92 if (priority != LOG_DEBUG) 93 vsyslog(priority, message, ap); 94 } 95 } 96 97 void 98 g_gate_log(int priority, const char *message, ...) 99 { 100 va_list ap; 101 102 va_start(ap, message); 103 g_gate_vlog(priority, message, ap); 104 va_end(ap); 105 } 106 107 void 108 g_gate_xvlog(const char *message, va_list ap) 109 { 110 111 g_gate_vlog(LOG_ERR, message, ap); 112 g_gate_vlog(LOG_ERR, "Exiting.", ap); 113 exit(EXIT_FAILURE); 114 } 115 116 void 117 g_gate_xlog(const char *message, ...) 118 { 119 va_list ap; 120 121 va_start(ap, message); 122 g_gate_xvlog(message, ap); 123 /* NOTREACHED */ 124 va_end(ap); 125 exit(EXIT_FAILURE); 126 } 127 128 off_t 129 g_gate_mediasize(int fd) 130 { 131 off_t mediasize; 132 struct stat sb; 133 134 if (fstat(fd, &sb) < 0) 135 g_gate_xlog("fstat(): %s.", strerror(errno)); 136 if (S_ISCHR(sb.st_mode)) { 137 if (ioctl(fd, DIOCGMEDIASIZE, &mediasize) < 0) { 138 g_gate_xlog("Can't get media size: %s.", 139 strerror(errno)); 140 } 141 } else if (S_ISREG(sb.st_mode)) { 142 mediasize = sb.st_size; 143 } else { 144 g_gate_xlog("Unsupported file system object."); 145 } 146 return (mediasize); 147 } 148 149 size_t 150 g_gate_sectorsize(int fd) 151 { 152 size_t secsize; 153 struct stat sb; 154 155 if (fstat(fd, &sb) < 0) 156 g_gate_xlog("fstat(): %s.", strerror(errno)); 157 if (S_ISCHR(sb.st_mode)) { 158 if (ioctl(fd, DIOCGSECTORSIZE, &secsize) < 0) { 159 g_gate_xlog("Can't get sector size: %s.", 160 strerror(errno)); 161 } 162 } else if (S_ISREG(sb.st_mode)) { 163 secsize = 512; 164 } else { 165 g_gate_xlog("Unsupported file system object."); 166 } 167 return (secsize); 168 } 169 170 void 171 g_gate_open_device(void) 172 { 173 174 g_gate_devfd = open("/dev/" G_GATE_CTL_NAME, O_RDWR, 0); 175 if (g_gate_devfd < 0) 176 err(EXIT_FAILURE, "open(/dev/%s)", G_GATE_CTL_NAME); 177 } 178 179 void 180 g_gate_close_device(void) 181 { 182 183 close(g_gate_devfd); 184 } 185 186 void 187 g_gate_ioctl(unsigned long req, void *data) 188 { 189 190 if (ioctl(g_gate_devfd, req, data) < 0) { 191 g_gate_xlog("%s: ioctl(/dev/%s): %s.", getprogname(), 192 G_GATE_CTL_NAME, strerror(errno)); 193 } 194 } 195 196 void 197 g_gate_destroy(int unit, int force) 198 { 199 struct g_gate_ctl_destroy ggio; 200 201 ggio.gctl_version = G_GATE_VERSION; 202 ggio.gctl_unit = unit; 203 ggio.gctl_force = force; 204 g_gate_ioctl(G_GATE_CMD_DESTROY, &ggio); 205 } 206 207 int 208 g_gate_openflags(unsigned ggflags) 209 { 210 211 if ((ggflags & G_GATE_FLAG_READONLY) != 0) 212 return (O_RDONLY); 213 else if ((ggflags & G_GATE_FLAG_WRITEONLY) != 0) 214 return (O_WRONLY); 215 return (O_RDWR); 216 } 217 218 void 219 g_gate_load_module(void) 220 { 221 222 if (modfind("g_gate") < 0) { 223 /* Not present in kernel, try loading it. */ 224 if (kldload("geom_gate") < 0 || modfind("g_gate") < 0) { 225 if (errno != EEXIST) { 226 errx(EXIT_FAILURE, 227 "geom_gate module not available!"); 228 } 229 } 230 } 231 } 232 233 #ifdef LIBGEOM 234 static struct gclass * 235 find_class(struct gmesh *mesh, const char *name) 236 { 237 struct gclass *class; 238 239 LIST_FOREACH(class, &mesh->lg_class, lg_class) { 240 if (strcmp(class->lg_name, name) == 0) 241 return (class); 242 } 243 return (NULL); 244 } 245 246 static const char * 247 get_conf(struct ggeom *gp, const char *name) 248 { 249 struct gconfig *conf; 250 251 LIST_FOREACH(conf, &gp->lg_config, lg_config) { 252 if (strcmp(conf->lg_name, name) == 0) 253 return (conf->lg_val); 254 } 255 return (NULL); 256 } 257 258 static void 259 show_config(struct ggeom *gp, int verbose) 260 { 261 struct gprovider *pp; 262 263 pp = LIST_FIRST(&gp->lg_provider); 264 if (pp == NULL) 265 return; 266 if (!verbose) { 267 printf("%s\n", pp->lg_name); 268 return; 269 } 270 printf(" NAME: %s\n", pp->lg_name); 271 printf(" info: %s\n", get_conf(gp, "info")); 272 printf(" access: %s\n", get_conf(gp, "access")); 273 printf(" timeout: %s\n", get_conf(gp, "timeout")); 274 printf("queue_count: %s\n", get_conf(gp, "queue_count")); 275 printf(" queue_size: %s\n", get_conf(gp, "queue_size")); 276 printf(" references: %s\n", get_conf(gp, "ref")); 277 printf(" mediasize: %jd\n", pp->lg_mediasize); 278 printf(" sectorsize: %u\n", pp->lg_sectorsize); 279 printf(" mode: %s\n", pp->lg_mode); 280 printf("\n"); 281 } 282 283 void 284 g_gate_list(int unit, int verbose) 285 { 286 struct gmesh mesh; 287 struct gclass *class; 288 struct ggeom *gp; 289 char name[64]; 290 int error; 291 292 error = geom_gettree(&mesh); 293 if (error != 0) 294 exit(EXIT_FAILURE); 295 class = find_class(&mesh, G_GATE_CLASS_NAME); 296 if (class == NULL) { 297 geom_deletetree(&mesh); 298 exit(EXIT_SUCCESS); 299 } 300 if (unit >= 0) { 301 snprintf(name, sizeof(name), "%s%d", G_GATE_PROVIDER_NAME, 302 unit); 303 } 304 LIST_FOREACH(gp, &class->lg_geom, lg_geom) { 305 if (unit != -1 && strcmp(gp->lg_name, name) != 0) 306 continue; 307 show_config(gp, verbose); 308 } 309 geom_deletetree(&mesh); 310 exit(EXIT_SUCCESS); 311 } 312 #endif /* LIBGEOM */ 313 314 in_addr_t 315 g_gate_str2ip(const char *str) 316 { 317 struct hostent *hp; 318 in_addr_t ip; 319 320 ip = inet_addr(str); 321 if (ip != INADDR_NONE) { 322 /* It is a valid IP address. */ 323 return (ip); 324 } 325 /* Check if it is a valid host name. */ 326 hp = gethostbyname(str); 327 if (hp == NULL) 328 return (INADDR_NONE); 329 return (((struct in_addr *)(hp->h_addr))->s_addr); 330 } 331