1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2003 Poul-Henning Kamp 5 * Copyright (c) 1996 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 * NetBSD: ccdconfig.c,v 1.6 1996/05/16 07:11:18 thorpej Exp $ 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <sys/param.h> 39 #include <sys/linker.h> 40 #include <sys/module.h> 41 #include <ctype.h> 42 #include <err.h> 43 #include <errno.h> 44 #include <limits.h> 45 #include <paths.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <unistd.h> 50 #include <libgeom.h> 51 52 #define CCDF_UNIFORM 0x02 /* use LCCD of sizes for uniform interleave */ 53 #define CCDF_MIRROR 0x04 /* use mirroring */ 54 #define CCDF_NO_OFFSET 0x08 /* do not leave space in front */ 55 #define CCDF_LINUX 0x10 /* use Linux compatibility mode */ 56 57 #include "pathnames.h" 58 59 static int lineno = 0; 60 static int verbose = 0; 61 static const char *ccdconf = _PATH_CCDCONF; 62 63 static struct flagval { 64 const char *fv_flag; 65 int fv_val; 66 } flagvaltab[] = { 67 { "CCDF_UNIFORM", CCDF_UNIFORM }, 68 { "uniform", CCDF_UNIFORM }, 69 { "CCDF_MIRROR", CCDF_MIRROR }, 70 { "mirror", CCDF_MIRROR }, 71 { "CCDF_NO_OFFSET", CCDF_NO_OFFSET }, 72 { "no_offset", CCDF_NO_OFFSET }, 73 { "CCDF_LINUX", CCDF_LINUX }, 74 { "linux", CCDF_LINUX }, 75 { "none", 0 }, 76 { NULL, 0 }, 77 }; 78 79 #define CCD_CONFIG 0 /* configure a device */ 80 #define CCD_CONFIGALL 1 /* configure all devices */ 81 #define CCD_UNCONFIG 2 /* unconfigure a device */ 82 #define CCD_UNCONFIGALL 3 /* unconfigure all devices */ 83 #define CCD_DUMP 4 /* dump a ccd's configuration */ 84 85 static int do_single(int, char **, int); 86 static int do_all(int); 87 static int dump_ccd(int, char **); 88 static int flags_to_val(char *); 89 static int resolve_ccdname(char *); 90 static void usage(void); 91 92 int 93 main(int argc, char *argv[]) 94 { 95 int ch, options = 0, action = CCD_CONFIG; 96 97 while ((ch = getopt(argc, argv, "cCf:guUv")) != -1) { 98 switch (ch) { 99 case 'c': 100 action = CCD_CONFIG; 101 ++options; 102 break; 103 104 case 'C': 105 action = CCD_CONFIGALL; 106 ++options; 107 break; 108 109 case 'f': 110 ccdconf = optarg; 111 break; 112 113 case 'g': 114 action = CCD_DUMP; 115 break; 116 117 case 'u': 118 action = CCD_UNCONFIG; 119 ++options; 120 break; 121 122 case 'U': 123 action = CCD_UNCONFIGALL; 124 ++options; 125 break; 126 127 case 'v': 128 verbose = 1; 129 break; 130 131 default: 132 usage(); 133 } 134 } 135 argc -= optind; 136 argv += optind; 137 138 if (options > 1) 139 usage(); 140 141 if (modfind("g_ccd") < 0) { 142 /* Not present in kernel, try loading it */ 143 if (kldload("geom_ccd") < 0 || modfind("g_ccd") < 0) 144 warn("geom_ccd module not available!"); 145 } 146 147 switch (action) { 148 case CCD_CONFIG: 149 case CCD_UNCONFIG: 150 exit(do_single(argc, argv, action)); 151 /* NOTREACHED */ 152 153 case CCD_CONFIGALL: 154 case CCD_UNCONFIGALL: 155 exit(do_all(action)); 156 /* NOTREACHED */ 157 158 case CCD_DUMP: 159 exit(dump_ccd(argc, argv)); 160 /* NOTREACHED */ 161 } 162 /* NOTREACHED */ 163 return (0); 164 } 165 166 static int 167 do_single(int argc, char **argv, int action) 168 { 169 char *cp, *cp2; 170 int ccd, noflags = 0, i, ileave, flags = 0; 171 struct gctl_req *grq; 172 char const *errstr; 173 char buf1[BUFSIZ]; 174 int ex; 175 176 /* 177 * If unconfiguring, all arguments are treated as ccds. 178 */ 179 if (action == CCD_UNCONFIG || action == CCD_UNCONFIGALL) { 180 ex = 0; 181 for (; argc != 0;) { 182 cp = *argv++; --argc; 183 if ((ccd = resolve_ccdname(cp)) < 0) { 184 warnx("invalid ccd name: %s", cp); 185 continue; 186 } 187 grq = gctl_get_handle(); 188 gctl_ro_param(grq, "verb", -1, "destroy geom"); 189 gctl_ro_param(grq, "class", -1, "CCD"); 190 sprintf(buf1, "ccd%d", ccd); 191 gctl_ro_param(grq, "geom", -1, buf1); 192 errstr = gctl_issue(grq); 193 if (errstr == NULL) { 194 if (verbose) 195 printf("%s unconfigured\n", cp); 196 gctl_free(grq); 197 continue; 198 } 199 warnx( 200 "%s\nor possibly kernel and ccdconfig out of sync", 201 errstr); 202 ex = 1; 203 } 204 return (ex); 205 } 206 207 /* Make sure there are enough arguments. */ 208 if (argc < 4) { 209 if (argc == 3) { 210 /* Assume that no flags are specified. */ 211 noflags = 1; 212 } else { 213 if (action == CCD_CONFIGALL) { 214 warnx("%s: bad line: %d", ccdconf, lineno); 215 return (1); 216 } else 217 usage(); 218 } 219 } 220 221 /* First argument is the ccd to configure. */ 222 cp = *argv++; --argc; 223 if ((ccd = resolve_ccdname(cp)) < 0) { 224 warnx("invalid ccd name: %s", cp); 225 return (1); 226 } 227 228 /* Next argument is the interleave factor. */ 229 cp = *argv++; --argc; 230 errno = 0; /* to check for ERANGE */ 231 ileave = (int)strtol(cp, &cp2, 10); 232 if ((errno == ERANGE) || (ileave < 0) || (*cp2 != '\0')) { 233 warnx("invalid interleave factor: %s", cp); 234 return (1); 235 } 236 237 if (noflags == 0) { 238 /* Next argument is the ccd configuration flags. */ 239 cp = *argv++; --argc; 240 if ((flags = flags_to_val(cp)) < 0) { 241 warnx("invalid flags argument: %s", cp); 242 return (1); 243 } 244 } 245 grq = gctl_get_handle(); 246 gctl_ro_param(grq, "verb", -1, "create geom"); 247 gctl_ro_param(grq, "class", -1, "CCD"); 248 gctl_ro_param(grq, "unit", sizeof(ccd), &ccd); 249 gctl_ro_param(grq, "ileave", sizeof(ileave), &ileave); 250 if (flags & CCDF_UNIFORM) 251 gctl_ro_param(grq, "uniform", -1, ""); 252 if (flags & CCDF_MIRROR) 253 gctl_ro_param(grq, "mirror", -1, ""); 254 if (flags & CCDF_NO_OFFSET) 255 gctl_ro_param(grq, "no_offset", -1, ""); 256 if (flags & CCDF_LINUX) 257 gctl_ro_param(grq, "linux", -1, ""); 258 gctl_ro_param(grq, "nprovider", sizeof(argc), &argc); 259 for (i = 0; i < argc; i++) { 260 sprintf(buf1, "provider%d", i); 261 cp = argv[i]; 262 if (!strncmp(cp, _PATH_DEV, strlen(_PATH_DEV))) 263 cp += strlen(_PATH_DEV); 264 gctl_ro_param(grq, buf1, -1, cp); 265 } 266 gctl_rw_param(grq, "output", sizeof(buf1), buf1); 267 errstr = gctl_issue(grq); 268 if (errstr == NULL) { 269 if (verbose) { 270 printf("%s", buf1); 271 } 272 gctl_free(grq); 273 return (0); 274 } 275 warnx( 276 "%s\nor possibly kernel and ccdconfig out of sync", 277 errstr); 278 return (1); 279 } 280 281 static int 282 do_all(int action) 283 { 284 FILE *f; 285 char line[_POSIX2_LINE_MAX]; 286 char *cp, **argv; 287 int argc, rval; 288 gid_t egid; 289 290 rval = 0; 291 egid = getegid(); 292 if (setegid(getgid()) != 0) 293 err(1, "setegid failed"); 294 if ((f = fopen(ccdconf, "r")) == NULL) { 295 if (setegid(egid) != 0) 296 err(1, "setegid failed"); 297 warn("fopen: %s", ccdconf); 298 return (1); 299 } 300 if (setegid(egid) != 0) 301 err(1, "setegid failed"); 302 303 while (fgets(line, sizeof(line), f) != NULL) { 304 argc = 0; 305 argv = NULL; 306 ++lineno; 307 if ((cp = strrchr(line, '\n')) != NULL) 308 *cp = '\0'; 309 310 /* Break up the line and pass it's contents to do_single(). */ 311 if (line[0] == '\0') 312 goto end_of_line; 313 for (cp = line; (cp = strtok(cp, " \t")) != NULL; cp = NULL) { 314 if (*cp == '#') 315 break; 316 if ((argv = realloc(argv, 317 sizeof(char *) * ++argc)) == NULL) { 318 warnx("no memory to configure ccds"); 319 return (1); 320 } 321 argv[argc - 1] = cp; 322 /* 323 * If our action is to unconfigure all, then pass 324 * just the first token to do_single() and ignore 325 * the rest. Since this will be encountered on 326 * our first pass through the line, the Right 327 * Thing will happen. 328 */ 329 if (action == CCD_UNCONFIGALL) { 330 if (do_single(argc, argv, action)) 331 rval = 1; 332 goto end_of_line; 333 } 334 } 335 if (argc != 0) 336 if (do_single(argc, argv, action)) 337 rval = 1; 338 339 end_of_line: 340 if (argv != NULL) 341 free(argv); 342 } 343 344 (void)fclose(f); 345 return (rval); 346 } 347 348 static int 349 resolve_ccdname(char *name) 350 { 351 352 if (!strncmp(name, _PATH_DEV, strlen(_PATH_DEV))) 353 name += strlen(_PATH_DEV); 354 if (strncmp(name, "ccd", 3)) 355 return -1; 356 name += 3; 357 if (!isdigit(*name)) 358 return -1; 359 return (strtoul(name, NULL, 10)); 360 } 361 362 static int 363 dumpout(int unit) 364 { 365 static int v; 366 struct gctl_req *grq; 367 int ncp; 368 char *cp; 369 char const *errstr; 370 371 grq = gctl_get_handle(); 372 ncp = 65536; 373 cp = malloc(ncp); 374 gctl_ro_param(grq, "verb", -1, "list"); 375 gctl_ro_param(grq, "class", -1, "CCD"); 376 gctl_ro_param(grq, "unit", sizeof(unit), &unit); 377 gctl_rw_param(grq, "output", ncp, cp); 378 errstr = gctl_issue(grq); 379 if (errstr != NULL) 380 errx(1, "%s\nor possibly kernel and ccdconfig out of sync", 381 errstr); 382 if (strlen(cp) == 0) 383 errx(1, "ccd%d not configured", unit); 384 if (verbose && !v) { 385 printf("# ccd\t\tileave\tflags\tcomponent devices\n"); 386 v = 1; 387 } 388 printf("%s", cp); 389 free(cp); 390 return (0); 391 } 392 393 static int 394 dump_ccd(int argc, char **argv) 395 { 396 int i, error; 397 398 if (argc == 0) { 399 error = dumpout(-1); 400 } else { 401 error = 0; 402 for (i = 0; error == 0 && i < argc; i++) 403 error = dumpout(resolve_ccdname(argv[i])); 404 } 405 return (error); 406 } 407 408 static int 409 flags_to_val(char *flags) 410 { 411 char *cp, *tok; 412 int i, tmp, val; 413 414 errno = 0; /* to check for ERANGE */ 415 val = (int)strtol(flags, &cp, 0); 416 if ((errno != ERANGE) && (*cp == '\0')) { 417 if (val & ~(CCDF_UNIFORM|CCDF_MIRROR)) 418 return (-1); 419 return (val); 420 } 421 422 /* Check for values represented by strings. */ 423 if ((cp = strdup(flags)) == NULL) 424 err(1, "no memory to parse flags"); 425 tmp = 0; 426 for (tok = cp; (tok = strtok(tok, ",")) != NULL; tok = NULL) { 427 for (i = 0; flagvaltab[i].fv_flag != NULL; ++i) 428 if (strcmp(tok, flagvaltab[i].fv_flag) == 0) 429 break; 430 if (flagvaltab[i].fv_flag == NULL) { 431 free(cp); 432 return (-1); 433 } 434 tmp |= flagvaltab[i].fv_val; 435 } 436 437 /* If we get here, the string was ok. */ 438 free(cp); 439 return (tmp); 440 } 441 442 static void 443 usage(void) 444 { 445 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n", 446 "usage: ccdconfig [-cv] ccd ileave [flags] dev ...", 447 " ccdconfig -C [-v] [-f config_file]", 448 " ccdconfig -u [-v] ccd ...", 449 " ccdconfig -U [-v] [-f config_file]", 450 " ccdconfig -g [ccd ...]"); 451 exit(1); 452 } 453