1 /* 2 * Copyright (c) 2003 Poul-Henning Kamp 3 * Copyright (c) 1995 Jason R. Thorpe. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed for the NetBSD Project 17 * by Jason R. Thorpe. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/param.h> 38 #include <sys/linker.h> 39 #include <sys/module.h> 40 #include <ctype.h> 41 #include <err.h> 42 #include <errno.h> 43 #include <limits.h> 44 #include <paths.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <unistd.h> 49 #include <libgeom.h> 50 51 #define CCDF_UNIFORM 0x02 /* use LCCD of sizes for uniform interleave */ 52 #define CCDF_MIRROR 0x04 /* use mirroring */ 53 #define CCDF_NO_OFFSET 0x08 /* do not leave space in front */ 54 #define CCDF_LINUX 0x10 /* use Linux compatibility mode */ 55 56 #include "pathnames.h" 57 58 static int lineno = 0; 59 static int verbose = 0; 60 static const char *ccdconf = _PATH_CCDCONF; 61 62 struct flagval { 63 const char *fv_flag; 64 int fv_val; 65 } flagvaltab[] = { 66 { "CCDF_UNIFORM", CCDF_UNIFORM }, 67 { "uniform", CCDF_UNIFORM }, 68 { "CCDF_MIRROR", CCDF_MIRROR }, 69 { "mirror", CCDF_MIRROR }, 70 { "CCDF_NO_OFFSET", CCDF_NO_OFFSET }, 71 { "no_offset", CCDF_NO_OFFSET }, 72 { "CCDF_LINUX", CCDF_LINUX }, 73 { "linux", CCDF_LINUX }, 74 { "none", 0 }, 75 { NULL, 0 }, 76 }; 77 78 #define CCD_CONFIG 0 /* configure a device */ 79 #define CCD_CONFIGALL 1 /* configure all devices */ 80 #define CCD_UNCONFIG 2 /* unconfigure a device */ 81 #define CCD_UNCONFIGALL 3 /* unconfigure all devices */ 82 #define CCD_DUMP 4 /* dump a ccd's configuration */ 83 84 static int do_single(int, char **, int); 85 static int do_all(int); 86 static int dump_ccd(int, char **); 87 static int flags_to_val(char *); 88 static int resolve_ccdname(char *); 89 static void usage(void); 90 91 int 92 main(int argc, char *argv[]) 93 { 94 int ch, options = 0, action = CCD_CONFIG; 95 96 while ((ch = getopt(argc, argv, "cCf:guUv")) != -1) { 97 switch (ch) { 98 case 'c': 99 action = CCD_CONFIG; 100 ++options; 101 break; 102 103 case 'C': 104 action = CCD_CONFIGALL; 105 ++options; 106 break; 107 108 case 'f': 109 ccdconf = optarg; 110 break; 111 112 case 'g': 113 action = CCD_DUMP; 114 break; 115 116 case 'u': 117 action = CCD_UNCONFIG; 118 ++options; 119 break; 120 121 case 'U': 122 action = CCD_UNCONFIGALL; 123 ++options; 124 break; 125 126 case 'v': 127 verbose = 1; 128 break; 129 130 default: 131 usage(); 132 } 133 } 134 argc -= optind; 135 argv += optind; 136 137 if (options > 1) 138 usage(); 139 140 if (modfind("g_ccd") < 0) { 141 /* Not present in kernel, try loading it */ 142 if (kldload("geom_ccd") < 0 || modfind("g_ccd") < 0) 143 warn("geom_ccd module not available!"); 144 } 145 146 switch (action) { 147 case CCD_CONFIG: 148 case CCD_UNCONFIG: 149 exit(do_single(argc, argv, action)); 150 /* NOTREACHED */ 151 152 case CCD_CONFIGALL: 153 case CCD_UNCONFIGALL: 154 exit(do_all(action)); 155 /* NOTREACHED */ 156 157 case CCD_DUMP: 158 exit(dump_ccd(argc, argv)); 159 /* NOTREACHED */ 160 } 161 /* NOTREACHED */ 162 return (0); 163 } 164 165 static int 166 do_single(int argc, char **argv, int action) 167 { 168 char *cp, *cp2; 169 int ccd, noflags = 0, i, ileave, flags = 0; 170 struct gctl_req *grq; 171 char const *errstr; 172 char buf1[BUFSIZ]; 173 int ex; 174 175 /* 176 * If unconfiguring, all arguments are treated as ccds. 177 */ 178 if (action == CCD_UNCONFIG || action == CCD_UNCONFIGALL) { 179 ex = 0; 180 for (; argc != 0;) { 181 cp = *argv++; --argc; 182 if ((ccd = resolve_ccdname(cp)) < 0) { 183 warnx("invalid ccd name: %s", cp); 184 continue; 185 } 186 grq = gctl_get_handle(); 187 gctl_ro_param(grq, "verb", -1, "destroy geom"); 188 gctl_ro_param(grq, "class", -1, "CCD"); 189 sprintf(buf1, "ccd%d", ccd); 190 gctl_ro_param(grq, "geom", -1, buf1); 191 errstr = gctl_issue(grq); 192 if (errstr == NULL) { 193 if (verbose) 194 printf("%s unconfigured\n", cp); 195 gctl_free(grq); 196 continue; 197 } 198 warnx( 199 "%s\nor possibly kernel and ccdconfig out of sync", 200 errstr); 201 ex = 1; 202 } 203 return (ex); 204 } 205 206 /* Make sure there are enough arguments. */ 207 if (argc < 4) { 208 if (argc == 3) { 209 /* Assume that no flags are specified. */ 210 noflags = 1; 211 } else { 212 if (action == CCD_CONFIGALL) { 213 warnx("%s: bad line: %d", ccdconf, lineno); 214 return (1); 215 } else 216 usage(); 217 } 218 } 219 220 /* First argument is the ccd to configure. */ 221 cp = *argv++; --argc; 222 if ((ccd = resolve_ccdname(cp)) < 0) { 223 warnx("invalid ccd name: %s", cp); 224 return (1); 225 } 226 227 /* Next argument is the interleave factor. */ 228 cp = *argv++; --argc; 229 errno = 0; /* to check for ERANGE */ 230 ileave = (int)strtol(cp, &cp2, 10); 231 if ((errno == ERANGE) || (ileave < 0) || (*cp2 != '\0')) { 232 warnx("invalid interleave factor: %s", cp); 233 return (1); 234 } 235 236 if (noflags == 0) { 237 /* Next argument is the ccd configuration flags. */ 238 cp = *argv++; --argc; 239 if ((flags = flags_to_val(cp)) < 0) { 240 warnx("invalid flags argument: %s", cp); 241 return (1); 242 } 243 } 244 grq = gctl_get_handle(); 245 gctl_ro_param(grq, "verb", -1, "create geom"); 246 gctl_ro_param(grq, "class", -1, "CCD"); 247 gctl_ro_param(grq, "unit", sizeof(ccd), &ccd); 248 gctl_ro_param(grq, "ileave", sizeof(ileave), &ileave); 249 if (flags & CCDF_UNIFORM) 250 gctl_ro_param(grq, "uniform", -1, ""); 251 if (flags & CCDF_MIRROR) 252 gctl_ro_param(grq, "mirror", -1, ""); 253 if (flags & CCDF_NO_OFFSET) 254 gctl_ro_param(grq, "no_offset", -1, ""); 255 if (flags & CCDF_LINUX) 256 gctl_ro_param(grq, "linux", -1, ""); 257 gctl_ro_param(grq, "nprovider", sizeof(argc), &argc); 258 for (i = 0; i < argc; i++) { 259 sprintf(buf1, "provider%d", i); 260 cp = argv[i]; 261 if (!strncmp(cp, _PATH_DEV, strlen(_PATH_DEV))) 262 cp += strlen(_PATH_DEV); 263 gctl_ro_param(grq, buf1, -1, cp); 264 } 265 gctl_rw_param(grq, "output", sizeof(buf1), buf1); 266 errstr = gctl_issue(grq); 267 if (errstr == NULL) { 268 if (verbose) { 269 printf("%s", buf1); 270 } 271 gctl_free(grq); 272 return (0); 273 } 274 warnx( 275 "%s\nor possibly kernel and ccdconfig out of sync", 276 errstr); 277 return (1); 278 } 279 280 static int 281 do_all(int action) 282 { 283 FILE *f; 284 char line[_POSIX2_LINE_MAX]; 285 char *cp, **argv; 286 int argc, rval; 287 gid_t egid; 288 289 rval = 0; 290 egid = getegid(); 291 setegid(getgid()); 292 if ((f = fopen(ccdconf, "r")) == NULL) { 293 setegid(egid); 294 warn("fopen: %s", ccdconf); 295 return (1); 296 } 297 setegid(egid); 298 299 while (fgets(line, sizeof(line), f) != NULL) { 300 argc = 0; 301 argv = NULL; 302 ++lineno; 303 if ((cp = strrchr(line, '\n')) != NULL) 304 *cp = '\0'; 305 306 /* Break up the line and pass it's contents to do_single(). */ 307 if (line[0] == '\0') 308 goto end_of_line; 309 for (cp = line; (cp = strtok(cp, " \t")) != NULL; cp = NULL) { 310 if (*cp == '#') 311 break; 312 if ((argv = realloc(argv, 313 sizeof(char *) * ++argc)) == NULL) { 314 warnx("no memory to configure ccds"); 315 return (1); 316 } 317 argv[argc - 1] = cp; 318 /* 319 * If our action is to unconfigure all, then pass 320 * just the first token to do_single() and ignore 321 * the rest. Since this will be encountered on 322 * our first pass through the line, the Right 323 * Thing will happen. 324 */ 325 if (action == CCD_UNCONFIGALL) { 326 if (do_single(argc, argv, action)) 327 rval = 1; 328 goto end_of_line; 329 } 330 } 331 if (argc != 0) 332 if (do_single(argc, argv, action)) 333 rval = 1; 334 335 end_of_line: 336 if (argv != NULL) 337 free(argv); 338 } 339 340 (void)fclose(f); 341 return (rval); 342 } 343 344 static int 345 resolve_ccdname(char *name) 346 { 347 348 if (!strncmp(name, _PATH_DEV, strlen(_PATH_DEV))) 349 name += strlen(_PATH_DEV); 350 if (strncmp(name, "ccd", 3)) 351 return -1; 352 name += 3; 353 if (!isdigit(*name)) 354 return -1; 355 return (strtoul(name, NULL, 10)); 356 } 357 358 static int 359 dumpout(int unit) 360 { 361 static int v; 362 struct gctl_req *grq; 363 int ncp; 364 char *cp; 365 char const *errstr; 366 367 grq = gctl_get_handle(); 368 ncp = 65536; 369 cp = malloc(ncp); 370 gctl_ro_param(grq, "verb", -1, "list"); 371 gctl_ro_param(grq, "class", -1, "CCD"); 372 gctl_ro_param(grq, "unit", sizeof(unit), &unit); 373 gctl_rw_param(grq, "output", ncp, cp); 374 errstr = gctl_issue(grq); 375 if (errstr != NULL) 376 errx(1, "%s\nor possibly kernel and ccdconfig out of sync", 377 errstr); 378 if (strlen(cp) == 0) 379 errx(1, "ccd%d not configured", unit); 380 if (verbose && !v) { 381 printf("# ccd\t\tileave\tflags\tcomponent devices\n"); 382 v = 1; 383 } 384 printf("%s", cp); 385 free(cp); 386 return (0); 387 } 388 389 static int 390 dump_ccd(int argc, char **argv) 391 { 392 int i, error; 393 394 if (argc == 0) { 395 error = dumpout(-1); 396 } else { 397 error = 0; 398 for (i = 0; error == 0 && i < argc; i++) 399 error = dumpout(resolve_ccdname(argv[i])); 400 } 401 return (error); 402 } 403 404 static int 405 flags_to_val(char *flags) 406 { 407 char *cp, *tok; 408 int i, tmp, val; 409 410 errno = 0; /* to check for ERANGE */ 411 val = (int)strtol(flags, &cp, 0); 412 if ((errno != ERANGE) && (*cp == '\0')) { 413 if (val & ~(CCDF_UNIFORM|CCDF_MIRROR)) 414 return (-1); 415 return (val); 416 } 417 418 /* Check for values represented by strings. */ 419 if ((cp = strdup(flags)) == NULL) 420 err(1, "no memory to parse flags"); 421 tmp = 0; 422 for (tok = cp; (tok = strtok(tok, ",")) != NULL; tok = NULL) { 423 for (i = 0; flagvaltab[i].fv_flag != NULL; ++i) 424 if (strcmp(tok, flagvaltab[i].fv_flag) == 0) 425 break; 426 if (flagvaltab[i].fv_flag == NULL) { 427 free(cp); 428 return (-1); 429 } 430 tmp |= flagvaltab[i].fv_val; 431 } 432 433 /* If we get here, the string was ok. */ 434 free(cp); 435 return (tmp); 436 } 437 438 static void 439 usage(void) 440 { 441 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n", 442 "usage: ccdconfig [-cv] ccd ileave [flags] dev ...", 443 " ccdconfig -C [-v] [-f config_file]", 444 " ccdconfig -u [-v] ccd ...", 445 " ccdconfig -U [-v] [-f config_file]", 446 " ccdconfig -g [ccd ...]"); 447 exit(1); 448 } 449