mdadm.c

   1 /*
   2  * mdadm - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
   5  *
   6  *
   7  *    This program is free software; you can redistribute it and/or modify
   8  *    it under the terms of the GNU General Public License as published by
   9  *    the Free Software Foundation; either version 2 of the License, or
  10  *    (at your option) any later version.
  11  *
  12  *    This program is distributed in the hope that it will be useful,
  13  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *    GNU General Public License for more details.
  16  *
  17  *    You should have received a copy of the GNU General Public License
  18  *    along with this program; if not, write to the Free Software
  19  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  *    Author: Neil Brown
  22  *    Email: <neilb@suse.de>
  23  *
  24  *    Additions for bitmap and write-behind RAID options, Copyright (C) 2003-2004,
  25  *    Paul Clements, SteelEye Technology, Inc.
  26  */
  27
  28 #include "mdadm.h"
  29 #include "md_p.h"
  30 #include <ctype.h>
  31
  32
  33 int main(int argc, char *argv[])
  34 {
  35         int mode = 0;
  36         int opt;
  37         int option_index;
  38         char *c;
  39         int rv;
  40         int i;
  41
  42         int chunk = 0;
  43         long long size = -1;
  44         int level = UnSet;
  45         int layout = UnSet;
  46         int raiddisks = 0;
  47         int max_disks = MD_SB_DISKS; /* just a default */
  48         int sparedisks = 0;
  49         struct mddev_ident_s ident;
  50         char *configfile = NULL;
  51         char *cp;
  52         char *update = NULL;
  53         int scan = 0;
  54         char devmode = 0;
  55         int runstop = 0;
  56         int readonly = 0;
  57         int write_behind = 0;
  58         int bitmap_fd = -1;
  59         char *bitmap_file = NULL;
  60         char *backup_file = NULL;
  61         int bitmap_chunk = UnSet;
  62         int SparcAdjust = 0;
  63         mddev_dev_t devlist = NULL;
  64         mddev_dev_t *devlistend = & devlist;
  65         mddev_dev_t dv;
  66         int devs_found = 0;
  67         int verbose = 0;
  68         int quiet = 0;
  69         int brief = 0;
  70         int force = 0;
  71         int test = 0;
  72         int export = 0;
  73         int assume_clean = 0;
  74         char *symlinks = NULL;
  75         /* autof indicates whether and how to create device node.
  76          * bottom 3 bits are style.  Rest (when shifted) are number of parts
  77          * 0  - unset
  78          * 1  - don't create (no)
  79          * 2  - if is_standard, then create (yes)
  80          * 3  - create as 'md' - reject is_standard mdp (md)
  81          * 4  - create as 'mdp' - reject is_standard md (mdp)
  82          * 5  - default to md if not is_standard (md in config file)
  83          * 6  - default to mdp if not is_standard (part, or mdp in config file)
  84          */
  85         int autof = 0;
  86
  87         char *homehost = NULL;
  88         char sys_hostname[256];
  89         int require_homehost = 1;
  90         char *mailaddr = NULL;
  91         char *program = NULL;
  92         int delay = 0;
  93         int daemonise = 0;
  94         char *pidfile = NULL;
  95         int oneshot = 0;
  96         struct supertype *ss = NULL;
  97         int writemostly = 0;
  98         int re_add = 0;
  99         char *shortopt = short_options;
 100         int dosyslog = 0;
 101         int rebuild_map = 0;
 102         int auto_update_home = 0;
 103
 104         int copies;
 105         int print_help = 0;
 106         FILE *outf;
 107
 108         int mdfd = -1;
 109
 110         srandom(time(0) ^ getpid());
 111
 112         ident.uuid_set=0;
 113         ident.level = UnSet;
 114         ident.raid_disks = UnSet;
 115         ident.super_minor= UnSet;
 116         ident.devices=0;
 117         ident.spare_group = NULL;
 118         ident.autof = 0;
 119         ident.st = NULL;
 120         ident.bitmap_fd = -1;
 121         ident.bitmap_file = NULL;
 122         ident.name[0] = 0;
 123         ident.container = NULL;
 124         ident.member = NULL;
 125
 126         while ((option_index = -1) ,
 127                (opt=getopt_long(argc, argv,
 128                                 shortopt, long_options,
 129                                 &option_index)) != -1) {
 130                 int newmode = mode;
 131                 /* firstly, some mode-independent options */
 132                 switch(opt) {
 133                 case 'h':
 134                         if (option_index > 0 &&
 135                             strcmp(long_options[option_index].name, "help-options")==0)
 136                                 print_help = 2;
 137                         else
 138                                 print_help = 1;
 139                         continue;
 140
 141                 case 'V':
 142                         fputs(Version, stderr);
 143                         exit(0);
 144
 145                 case 'v': verbose++;
 146                         continue;
 147
 148                 case 'q': quiet++;
 149                         continue;
 150
 151                 case 'b':
 152                         if (mode == ASSEMBLE || mode == BUILD || mode == CREATE || mode == GROW)
 153                                 break; /* b means bitmap */
 154                         brief = 1;
 155                         if (optarg) {
 156                                 fprintf(stderr, Name ": -b cannot have any extra immediately after it, sorry.\n");
 157                                 exit(2);
 158                         }
 159                         continue;
 160
 161                 case 'Y': export++;
 162                         continue;
 163
 164                 case HomeHost:
 165                         if (strcasecmp(optarg, "<ignore>") == 0)
 166                                 require_homehost = 0;
 167                         else
 168                                 homehost = optarg;
 169                         continue;
 170
 171                 case ':':
 172                 case '?':
 173                         fputs(Usage, stderr);
 174                         exit(2);
 175                 }
 176                 /* second, figure out the mode.
 177                  * Some options force the mode.  Others
 178                  * set the mode if it isn't already
 179                  */
 180
 181                 switch(opt) {
 182                 case '@': /* just incase they say --manage */
 183                         newmode = MANAGE;
 184                         shortopt = short_bitmap_options;
 185                         break;
 186                 case 'a':
 187                 case 'r':
 188                 case 'f':
 189                 case ReAdd: /* re-add */
 190                         if (!mode) {
 191                                 newmode = MANAGE;
 192                                 shortopt = short_bitmap_options;
 193                         }
 194                         break;
 195
 196                 case 'A': newmode = ASSEMBLE; shortopt = short_bitmap_auto_options; break;
 197                 case 'B': newmode = BUILD; shortopt = short_bitmap_auto_options; break;
 198                 case 'C': newmode = CREATE; shortopt = short_bitmap_auto_options; break;
 199                 case 'F': newmode = MONITOR;break;
 200                 case 'G': newmode = GROW;
 201                         shortopt = short_bitmap_options;
 202                         break;
 203                 case 'I': newmode = INCREMENTAL;
 204                         shortopt = short_bitmap_auto_options; break;
 205                 case AutoDetect:
 206                         newmode = AUTODETECT; break;
 207
 208                 case '#':
 209                 case 'D':
 210                 case 'E':
 211                 case 'X':
 212                 case 'Q': newmode = MISC; break;
 213                 case 'R':
 214                 case 'S':
 215                 case 'o':
 216                 case 'w':
 217                 case 'W':
 218                 case Waitclean:
 219                 case DetailPlatform:
 220                 case 'K': if (!mode) newmode = MISC; break;
 221                 }
 222                 if (mode && newmode == mode) {
 223                         /* everybody happy ! */
 224                 } else if (mode && newmode != mode) {
 225                         /* not allowed.. */
 226                         fprintf(stderr, Name ": ");
 227                         if (option_index >= 0)
 228                                 fprintf(stderr, "--%s", long_options[option_index].name);
 229                         else
 230                                 fprintf(stderr, "-%c", opt);
 231                         fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
 232                                 map_num(modes, newmode),
 233                                 map_num(modes, mode));
 234                         exit(2);
 235                 } else if (!mode && newmode) {
 236                         mode = newmode;
 237                 } else {
 238                         /* special case of -c --help */
 239                         if (opt == 'c' &&
 240                             ( strncmp(optarg, "--h", 3)==0 ||
 241                               strncmp(optarg, "-h", 2)==0)) {
 242                                 fputs(Help_config, stdout);
 243                                 exit(0);
 244                         }
 245
 246                         /* If first option is a device, don't force the mode yet */
 247                         if (opt == 1) {
 248                                 if (devs_found == 0) {
 249                                         dv = malloc(sizeof(*dv));
 250                                         if (dv == NULL) {
 251                                                 fprintf(stderr, Name ": malloc failed\n");
 252                                                 exit(3);
 253                                         }
 254                                         dv->devname = optarg;
 255                                         dv->disposition = devmode;
 256                                         dv->writemostly = writemostly;
 257                                         dv->re_add = re_add;
 258                                         dv->used = 0;
 259                                         dv->content = NULL;
 260                                         dv->next = NULL;
 261                                         *devlistend = dv;
 262                                         devlistend = &dv->next;
 263
 264                                         devs_found++;
 265                                         continue;
 266                                 }
 267                                 /* No mode yet, and this is the second device ... */
 268                                 fprintf(stderr, Name ": An option must be given to set the mode before a second device is listed\n");
 269                                 exit(2);
 270                         }
 271                         if (option_index >= 0)
 272                                 fprintf(stderr, Name ": --%s", long_options[option_index].name);
 273                         else
 274                                 fprintf(stderr, Name ": -%c", opt);
 275                         fprintf(stderr, " does not set the mode, and so cannot be the first option.\n");
 276                         exit(2);
 277                 }
 278
 279                 /* if we just set the mode, then done */
 280                 switch(opt) {
 281                 case '@':
 282                 case '#':
 283                 case 'A':
 284                 case 'B':
 285                 case 'C':
 286                 case 'F':
 287                 case 'G':
 288                 case 'I':
 289                 case AutoDetect:
 290                         continue;
 291                 }
 292                 if (opt == 1) {
 293                         /* an undecorated option - must be a device name.
 294                          */
 295                         if (devs_found > 0 && mode == '@' && !devmode) {
 296                                 fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
 297                                 exit(2);
 298                         }
 299                         if (devs_found > 0 && mode == 'G' && !devmode) {
 300                                 fprintf(stderr, Name ": Must give one of -a for devices do add: %s\n", optarg);
 301                                 exit(2);
 302                         }
 303                         dv = malloc(sizeof(*dv));
 304                         if (dv == NULL) {
 305                                 fprintf(stderr, Name ": malloc failed\n");
 306                                 exit(3);
 307                         }
 308                         dv->devname = optarg;
 309                         dv->disposition = devmode;
 310                         dv->writemostly = writemostly;
 311                         dv->re_add = re_add;
 312                         dv->used = 0;
 313                         dv->content = NULL;
 314                         dv->next = NULL;
 315                         *devlistend = dv;
 316                         devlistend = &dv->next;
 317
 318                         devs_found++;
 319                         continue;
 320                 }
 321
 322                 /* We've got a mode, and opt is now something else which
 323                  * could depend on the mode */
 324 #define O(a,b) ((a<<8)|b)
 325                 switch (O(mode,opt)) {
 326                 case O(CREATE,'c'):
 327                 case O(BUILD,'c'): /* chunk or rounding */
 328                         if (chunk) {
 329                                 fprintf(stderr, Name ": chunk/rounding may only be specified once. "
 330                                         "Second value is %s.\n", optarg);
 331                                 exit(2);
 332                         }
 333                         chunk = strtol(optarg, &c, 10);
 334                         if (!optarg[0] || *c || chunk<4 || ((chunk-1)&chunk)) {
 335                                 fprintf(stderr, Name ": invalid chunk/rounding value: %s\n",
 336                                         optarg);
 337                                 exit(2);
 338                         }
 339                         continue;
 340
 341 #if 0
 342                 case O(ASSEMBLE,AutoHomeHost):
 343                         auto_update_home = 1;
 344                         continue;
 345 #endif
 346                 case O(INCREMENTAL, 'e'):
 347                 case O(CREATE,'e'):
 348                 case O(ASSEMBLE,'e'):
 349                 case O(MISC,'e'): /* set metadata (superblock) information */
 350                         if (ss) {
 351                                 fprintf(stderr, Name ": metadata information already given\n");
 352                                 exit(2);
 353                         }
 354                         for(i=0; !ss && superlist[i]; i++)
 355                                 ss = superlist[i]->match_metadata_desc(optarg);
 356
 357                         if (!ss) {
 358                                 fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
 359                                 exit(2);
 360                         }
 361                         max_disks = ss->max_devs;
 362                         continue;
 363
 364                 case O(MANAGE,'W'):
 365                 case O(BUILD,'W'):
 366                 case O(CREATE,'W'):
 367                         /* set write-mostly for following devices */
 368                         writemostly = 1;
 369                         continue;
 370
 371                 case O(MANAGE,'w'):
 372                         /* clear write-mostly for following devices */
 373                         writemostly = 2;
 374                         continue;
 375
 376
 377                 case O(GROW,'z'):
 378                 case O(CREATE,'z'):
 379                 case O(BUILD,'z'): /* size */
 380                         if (size >= 0) {
 381                                 fprintf(stderr, Name ": size may only be specified once. "
 382                                         "Second value is %s.\n", optarg);
 383                                 exit(2);
 384                         }
 385                         if (strcmp(optarg, "max")==0)
 386                                 size = 0;
 387                         else {
 388                                 size = strtoll(optarg, &c, 10);
 389                                 if (!optarg[0] || *c || size < 4) {
 390                                         fprintf(stderr, Name ": invalid size: %s\n",
 391                                                 optarg);
 392                                         exit(2);
 393                                 }
 394                         }
 395                         continue;
 396
 397                 case O(GROW,'l'): /* hack - needed to understand layout */
 398                 case O(CREATE,'l'):
 399                 case O(BUILD,'l'): /* set raid level*/
 400                         if (level != UnSet) {
 401                                 fprintf(stderr, Name ": raid level may only be set once.  "
 402                                         "Second value is %s.\n", optarg);
 403                                 exit(2);
 404                         }
 405                         level = map_name(pers, optarg);
 406                         if (level == UnSet) {
 407                                 fprintf(stderr, Name ": invalid raid level: %s\n",
 408                                         optarg);
 409                                 exit(2);
 410                         }
 411                         if (level != 0 && level != LEVEL_LINEAR && level != 1 &&
 412                             level != LEVEL_MULTIPATH && level != LEVEL_FAULTY &&
 413                             level != 10 &&
 414                             mode == BUILD) {
 415                                 fprintf(stderr, Name ": Raid level %s not permitted with --build.\n",
 416                                         optarg);
 417                                 exit(2);
 418                         }
 419                         if (sparedisks > 0 && level < 1 && level >= -1) {
 420                                 fprintf(stderr, Name ": raid level %s is incompatible with spare-devices setting.\n",
 421                                         optarg);
 422                                 exit(2);
 423                         }
 424                         ident.level = level;
 425                         continue;
 426
 427                 case O(CREATE,'p'): /* raid5 layout */
 428                 case O(BUILD,'p'): /* faulty layout */
 429                 case O(GROW, 'p'): /* faulty reconfig */
 430                         if (layout != UnSet) {
 431                                 fprintf(stderr,Name ": layout may only be sent once.  "
 432                                         "Second value was %s\n", optarg);
 433                                 exit(2);
 434                         }
 435                         switch(level) {
 436                         default:
 437                                 fprintf(stderr, Name ": layout not meaningful for %s arrays.\n",
 438                                         map_num(pers, level));
 439                                 exit(2);
 440                         case UnSet:
 441                                 fprintf(stderr, Name ": raid level must be given before layout.\n");
 442                                 exit(2);
 443
 444                         case 5:
 445                                 layout = map_name(r5layout, optarg);
 446                                 if (layout==UnSet) {
 447                                         fprintf(stderr, Name ": layout %s not understood for raid5.\n",
 448                                                 optarg);
 449                                         exit(2);
 450                                 }
 451                                 break;
 452                         case 6:
 453                                 layout = map_name(r6layout, optarg);
 454                                 if (layout==UnSet) {
 455                                         fprintf(stderr, Name ": layout %s not understood for raid6.\n",
 456                                                 optarg);
 457                                         exit(2);
 458                                 }
 459                                 break;
 460
 461                         case 10:
 462                                 /* 'f', 'o' or 'n' followed by a number <= raid_disks */
 463                                 if ((optarg[0] !=  'n' && optarg[0] != 'f' && optarg[0] != 'o') ||
 464                                     (copies = strtoul(optarg+1, &cp, 10)) < 1 ||
 465                                     copies > 200 ||
 466                                     *cp) {
 467                                         fprintf(stderr, Name ": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg);
 468                                         exit(2);
 469                                 }
 470                                 if (optarg[0] == 'n')
 471                                         layout = 256 + copies;
 472                                 else if (optarg[0] == 'o')
 473                                         layout = 0x10000 + (copies<<8) + 1;
 474                                 else
 475                                         layout = 1 + (copies<<8);
 476                                 break;
 477                         case -5: /* Faulty
 478                                   * modeNNN
 479                                   */
 480
 481                         {
 482                                 int ln = strcspn(optarg, "0123456789");
 483                                 char *m = strdup(optarg);
 484                                 int mode;
 485                                 m[ln] = 0;
 486                                 mode = map_name(faultylayout, m);
 487                                 if (mode == UnSet) {
 488                                         fprintf(stderr, Name ": layout %s not understood for faulty.\n",
 489                                                 optarg);
 490                                         exit(2);
 491                                 }
 492                                 layout = mode | (atoi(optarg+ln)<< ModeShift);
 493                         }
 494                         }
 495                         continue;
 496
 497                 case O(CREATE,AssumeClean):
 498                 case O(BUILD,AssumeClean): /* assume clean */
 499                         assume_clean = 1;
 500                         continue;
 501
 502                 case O(GROW,'n'):
 503                 case O(CREATE,'n'):
 504                 case O(BUILD,'n'): /* number of raid disks */
 505                         if (raiddisks) {
 506                                 fprintf(stderr, Name ": raid-devices set twice: %d and %s\n",
 507                                         raiddisks, optarg);
 508                                 exit(2);
 509                         }
 510                         raiddisks = strtol(optarg, &c, 10);
 511                         if (!optarg[0] || *c || raiddisks<=0) {
 512                                 fprintf(stderr, Name ": invalid number of raid devices: %s\n",
 513                                         optarg);
 514                                 exit(2);
 515                         }
 516                         ident.raid_disks = raiddisks;
 517                         continue;
 518
 519                 case O(CREATE,'x'): /* number of spare (eXtra) discs */
 520                         if (sparedisks) {
 521                                 fprintf(stderr,Name ": spare-devices set twice: %d and %s\n",
 522                                         sparedisks, optarg);
 523                                 exit(2);
 524                         }
 525                         if (level != UnSet && level <= 0 && level >= -1) {
 526                                 fprintf(stderr, Name ": spare-devices setting is incompatible with raid level %d\n",
 527                                         level);
 528                                 exit(2);
 529                         }
 530                         sparedisks = strtol(optarg, &c, 10);
 531                         if (!optarg[0] || *c || sparedisks < 0) {
 532                                 fprintf(stderr, Name ": invalid number of spare-devices: %s\n",
 533                                         optarg);
 534                                 exit(2);
 535                         }
 536                         continue;
 537
 538                 case O(CREATE,'a'):
 539                 case O(BUILD,'a'):
 540                 case O(INCREMENTAL,'a'):
 541                 case O(ASSEMBLE,'a'): /* auto-creation of device node */
 542                         autof = parse_auto(optarg, "--auto flag", 0);
 543                         continue;
 544
 545                 case O(CREATE,Symlinks):
 546                 case O(BUILD,Symlinks):
 547                 case O(ASSEMBLE,Symlinks): /* auto creation of symlinks in /dev to /dev/md */
 548                         symlinks = optarg;
 549                         continue;
 550
 551                 case O(BUILD,'f'): /* force honouring '-n 1' */
 552                 case O(GROW,'f'): /* ditto */
 553                 case O(CREATE,'f'): /* force honouring of device list */
 554                 case O(ASSEMBLE,'f'): /* force assembly */
 555                 case O(MISC,'f'): /* force zero */
 556                         force=1;
 557                         continue;
 558
 559                         /* now for the Assemble options */
 560                 case O(CREATE,'u'): /* uuid of array */
 561                 case O(ASSEMBLE,'u'): /* uuid of array */
 562                         if (ident.uuid_set) {
 563                                 fprintf(stderr, Name ": uuid cannot be set twice.  "
 564                                         "Second value %s.\n", optarg);
 565                                 exit(2);
 566                         }
 567                         if (parse_uuid(optarg, ident.uuid))
 568                                 ident.uuid_set = 1;
 569                         else {
 570                                 fprintf(stderr,Name ": Bad uuid: %s\n", optarg);
 571                                 exit(2);
 572                         }
 573                         continue;
 574
 575                 case O(CREATE,'N'):
 576                 case O(ASSEMBLE,'N'):
 577                         if (ident.name[0]) {
 578                                 fprintf(stderr, Name ": name cannot be set twice.   "
 579                                         "Second value %s.\n", optarg);
 580                                 exit(2);
 581                         }
 582                         if (strlen(optarg) > 32) {
 583                                 fprintf(stderr, Name ": name '%s' is too long, 32 chars max.\n",
 584                                         optarg);
 585                                 exit(2);
 586                         }
 587                         strcpy(ident.name, optarg);
 588                         continue;
 589
 590                 case O(ASSEMBLE,'m'): /* super-minor for array */
 591                         if (ident.super_minor != UnSet) {
 592                                 fprintf(stderr, Name ": super-minor cannot be set twice.  "
 593                                         "Second value: %s.\n", optarg);
 594                                 exit(2);
 595                         }
 596                         if (strcmp(optarg, "dev")==0)
 597                                 ident.super_minor = -2;
 598                         else {
 599                                 ident.super_minor = strtoul(optarg, &cp, 10);
 600                                 if (!optarg[0] || *cp) {
 601                                         fprintf(stderr, Name ": Bad super-minor number: %s.\n", optarg);
 602                                         exit(2);
 603                                 }
 604                         }
 605                         continue;
 606
 607                 case O(ASSEMBLE,'U'): /* update the superblock */
 608                         if (update) {
 609                                 fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
 610                                         update, optarg);
 611                                 exit(2);
 612                         }
 613                         update = optarg;
 614                         if (strcmp(update, "sparc2.2")==0)
 615                                 continue;
 616                         if (strcmp(update, "super-minor") == 0)
 617                                 continue;
 618                         if (strcmp(update, "summaries")==0)
 619                                 continue;
 620                         if (strcmp(update, "resync")==0)
 621                                 continue;
 622                         if (strcmp(update, "uuid")==0)
 623                                 continue;
 624                         if (strcmp(update, "name")==0)
 625                                 continue;
 626                         if (strcmp(update, "homehost")==0)
 627                                 continue;
 628                         if (strcmp(update, "devicesize")==0)
 629                                 continue;
 630                         if (strcmp(update, "byteorder")==0) {
 631                                 if (ss) {
 632                                         fprintf(stderr, Name ": must not set metadata type with --update=byteorder.\n");
 633                                         exit(2);
 634                                 }
 635                                 for(i=0; !ss && superlist[i]; i++)
 636                                         ss = superlist[i]->match_metadata_desc("0.swap");
 637                                 if (!ss) {
 638                                         fprintf(stderr, Name ": INTERNAL ERROR cannot find 0.swap\n");
 639                                         exit(2);
 640                                 }
 641
 642                                 continue;
 643                         }
 644                         if (strcmp(update,"?") == 0 ||
 645                             strcmp(update, "help") == 0) {
 646                                 outf = stdout;
 647                                 fprintf(outf, Name ": ");
 648                         } else {
 649                                 outf = stderr;
 650                                 fprintf(outf,
 651                                         Name ": '--update=%s' is invalid.  ",
 652                                         update);
 653                         }
 654                         fprintf(outf, "Valid --update options are:\n"
 655                 "     'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
 656                 "     'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
 657                         exit(outf == stdout ? 0 : 2);
 658
 659                 case O(INCREMENTAL,NoDegraded):
 660                 case O(ASSEMBLE,NoDegraded): /* --no-degraded */
 661                         runstop = -1; /* --stop isn't allowed for --assemble,
 662                                        * so we overload slightly */
 663                         continue;
 664
 665                 case O(ASSEMBLE,'c'): /* config file */
 666                 case O(INCREMENTAL, 'c'):
 667                 case O(MISC, 'c'):
 668                 case O(MONITOR,'c'):
 669                         if (configfile) {
 670                                 fprintf(stderr, Name ": configfile cannot be set twice.  "
 671                                         "Second value is %s.\n", optarg);
 672                                 exit(2);
 673                         }
 674                         configfile = optarg;
 675                         set_conffile(configfile);
 676                         /* FIXME possibly check that config file exists.  Even parse it */
 677                         continue;
 678                 case O(ASSEMBLE,'s'): /* scan */
 679                 case O(MISC,'s'):
 680                 case O(MONITOR,'s'):
 681                 case O(INCREMENTAL,'s'):
 682                         scan = 1;
 683                         continue;
 684
 685                 case O(MONITOR,'m'): /* mail address */
 686                         if (mailaddr)
 687                                 fprintf(stderr, Name ": only specify one mailaddress. %s ignored.\n",
 688                                         optarg);
 689                         else
 690                                 mailaddr = optarg;
 691                         continue;
 692
 693                 case O(MONITOR,'p'): /* alert program */
 694                         if (program)
 695                                 fprintf(stderr, Name ": only specify one alter program. %s ignored.\n",
 696                                         optarg);
 697                         else
 698                                 program = optarg;
 699                         continue;
 700
 701                 case O(MONITOR,'d'): /* delay in seconds */
 702                 case O(GROW, 'd'):
 703                 case O(BUILD,'d'): /* delay for bitmap updates */
 704                 case O(CREATE,'d'):
 705                         if (delay)
 706                                 fprintf(stderr, Name ": only specify delay once. %s ignored.\n",
 707                                         optarg);
 708                         else {
 709                                 delay = strtol(optarg, &c, 10);
 710                                 if (!optarg[0] || *c || delay<1) {
 711                                         fprintf(stderr, Name ": invalid delay: %s\n",
 712                                                 optarg);
 713                                         exit(2);
 714                                 }
 715                         }
 716                         continue;
 717                 case O(MONITOR,'f'): /* daemonise */
 718                         daemonise = 1;
 719                         continue;
 720                 case O(MONITOR,'i'): /* pid */
 721                         if (pidfile)
 722                                 fprintf(stderr, Name ": only specify one pid file. %s ignored.\n",
 723                                         optarg);
 724                         else
 725                                 pidfile = optarg;
 726                         continue;
 727                 case O(MONITOR,'1'): /* oneshot */
 728                         oneshot = 1;
 729                         continue;
 730                 case O(MONITOR,'t'): /* test */
 731                         test = 1;
 732                         continue;
 733                 case O(MONITOR,'y'): /* log messages to syslog */
 734                         openlog("mdadm", LOG_PID, SYSLOG_FACILITY);
 735                         dosyslog = 1;
 736                         continue;
 737
 738                         /* now the general management options.  Some are applicable
 739                          * to other modes. None have arguments.
 740                          */
 741                 case O(GROW,'a'):
 742                 case O(MANAGE,'a'): /* add a drive */
 743                         devmode = 'a';
 744                         re_add = 0;
 745                         continue;
 746                 case O(MANAGE,ReAdd):
 747                         devmode = 'a';
 748                         re_add = 1;
 749                         continue;
 750                 case O(MANAGE,'r'): /* remove a drive */
 751                         devmode = 'r';
 752                         continue;
 753                 case O(MANAGE,'f'): /* set faulty */
 754                         devmode = 'f';
 755                         continue;
 756                 case O(INCREMENTAL,'R'):
 757                 case O(MANAGE,'R'):
 758                 case O(ASSEMBLE,'R'):
 759                 case O(BUILD,'R'):
 760                 case O(CREATE,'R'): /* Run the array */
 761                         if (runstop < 0) {
 762                                 fprintf(stderr, Name ": Cannot both Stop and Run an array\n");
 763                                 exit(2);
 764                         }
 765                         runstop = 1;
 766                         continue;
 767                 case O(MANAGE,'S'):
 768                         if (runstop > 0) {
 769                                 fprintf(stderr, Name ": Cannot both Run and Stop an array\n");
 770                                 exit(2);
 771                         }
 772                         runstop = -1;
 773                         continue;
 774
 775                 case O(MISC,'Q'):
 776                 case O(MISC,'D'):
 777                 case O(MISC,'E'):
 778                 case O(MISC,'K'):
 779                 case O(MISC,'R'):
 780                 case O(MISC,'S'):
 781                 case O(MISC,'X'):
 782                 case O(MISC,'o'):
 783                 case O(MISC,'w'):
 784                 case O(MISC,'W'):
 785                 case O(MISC, Waitclean):
 786                 case O(MISC, DetailPlatform):
 787                         if (devmode && devmode != opt &&
 788                             (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
 789                                 fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
 790                                         devmode =='E'?opt:devmode);
 791                                 exit(2);
 792                         }
 793                         devmode = opt;
 794                         continue;
 795                 case O(MISC,'t'):
 796                         test = 1;
 797                         continue;
 798
 799                 case O(MISC, Sparc22):
 800                         if (devmode != 'E') {
 801                                 fprintf(stderr, Name ": --sparc2.2 only allowed with --examine\n");
 802                                 exit(2);
 803                         }
 804                         SparcAdjust = 1;
 805                         continue;
 806
 807                 case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */
 808                         if (!optarg) {
 809                                 fprintf(stderr, Name ": bitmap file needed with -b in --assemble mode\n");
 810                                 exit(2);
 811                         }
 812                         if (strcmp(optarg, "internal")==0) {
 813                                 fprintf(stderr, Name ": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
 814                                 continue;
 815                         }
 816                         bitmap_fd = open(optarg, O_RDWR);
 817                         if (!*optarg || bitmap_fd < 0) {
 818                                 fprintf(stderr, Name ": cannot open bitmap file %s: %s\n", optarg, strerror(errno));
 819                                 exit(2);
 820                         }
 821                         ident.bitmap_fd = bitmap_fd; /* for Assemble */
 822                         continue;
 823
 824                 case O(ASSEMBLE, BackupFile):
 825                 case O(GROW, BackupFile):
 826                         /* Specify a file into which grow might place a backup,
 827                          * or from which assemble might recover a backup
 828                          */
 829                         if (backup_file) {
 830                                 fprintf(stderr, Name ": backup file already specified, rejecting %s\n", optarg);
 831                                 exit(2);
 832                         }
 833                         backup_file = optarg;
 834                         continue;
 835
 836                 case O(BUILD,'b'):
 837                 case O(CREATE,'b'): /* here we create the bitmap */
 838                         if (strcmp(optarg, "none") == 0) {
 839                                 fprintf(stderr, Name ": '--bitmap none' only"
 840                                         " support for --grow\n");
 841                                 exit(2);
 842                         }
 843                         /* FALL THROUGH */
 844                 case O(GROW,'b'):
 845                         if (strcmp(optarg, "internal")== 0 ||
 846                             strcmp(optarg, "none")== 0 ||
 847                             strchr(optarg, '/') != NULL) {
 848                                 bitmap_file = optarg;
 849                                 continue;
 850                         }
 851                         /* probable typo */
 852                         fprintf(stderr, Name ": bitmap file must contain a '/', or be 'internal', or 'none'\n");
 853                         exit(2);
 854
 855                 case O(GROW,BitmapChunk):
 856                 case O(BUILD,BitmapChunk):
 857                 case O(CREATE,BitmapChunk): /* bitmap chunksize */
 858                         bitmap_chunk = strtol(optarg, &c, 10);
 859                         if (!optarg[0] || *c || bitmap_chunk < 0 ||
 860                                         bitmap_chunk & (bitmap_chunk - 1)) {
 861                                 fprintf(stderr, Name ": invalid bitmap chunksize: %s\n",
 862                                                 optarg);
 863                                 exit(2);
 864                         }
 865                         /* convert K to B, chunk of 0K means 512B */
 866                         bitmap_chunk = bitmap_chunk ? bitmap_chunk * 1024 : 512;
 867                         continue;
 868
 869                 case O(GROW, WriteBehind):
 870                 case O(BUILD, WriteBehind):
 871                 case O(CREATE, WriteBehind): /* write-behind mode */
 872                         write_behind = DEFAULT_MAX_WRITE_BEHIND;
 873                         if (optarg) {
 874                                 write_behind = strtol(optarg, &c, 10);
 875                                 if (write_behind < 0 || *c ||
 876                                     write_behind > 16383) {
 877                                         fprintf(stderr, Name ": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg);
 878                                         exit(2);
 879                                 }
 880                         }
 881                         continue;
 882
 883                 case O(INCREMENTAL, 'r'):
 884                         rebuild_map = 1;
 885                         continue;
 886                 }
 887                 /* We have now processed all the valid options. Anything else is
 888                  * an error
 889                  */
 890                 if (option_index > 0)
 891                         fprintf(stderr, Name ":option --%s not valid in %s mode\n",
 892                                 long_options[option_index].name,
 893                                 map_num(modes, mode));
 894                 else
 895                         fprintf(stderr, Name ": option -%c not valid in %s mode\n",
 896                                 opt, map_num(modes, mode));
 897                 exit(2);
 898
 899         }
 900
 901         if (print_help) {
 902                 char *help_text = Help;
 903                 if (print_help == 2)
 904                         help_text = OptionHelp;
 905                 else
 906                         switch (mode) {
 907                         case ASSEMBLE : help_text = Help_assemble; break;
 908                         case BUILD    : help_text = Help_build; break;
 909                         case CREATE   : help_text = Help_create; break;
 910                         case MANAGE   : help_text = Help_manage; break;
 911                         case MISC     : help_text = Help_misc; break;
 912                         case MONITOR  : help_text = Help_monitor; break;
 913                         case GROW     : help_text = Help_grow; break;
 914                         case INCREMENTAL:help_text= Help_incr; break;
 915                         }
 916                 fputs(help_text,stdout);
 917                 exit(0);
 918         }
 919
 920         if (!mode && devs_found) {
 921                 mode = MISC;
 922                 devmode = 'Q';
 923                 if (devlist->disposition == 0)
 924                         devlist->disposition = devmode;
 925         }
 926         if (!mode) {
 927                 fputs(Usage, stderr);
 928                 exit(2);
 929         }
 930
 931         if (symlinks) {
 932                 struct createinfo *ci = conf_get_create_info();
 933
 934                 if (strcasecmp(symlinks, "yes") == 0)
 935                         ci->symlinks = 1;
 936                 else if (strcasecmp(symlinks, "no") == 0)
 937                         ci->symlinks = 0;
 938                 else {
 939                         fprintf(stderr, Name ": option --symlinks must be 'no' or 'yes'\n");
 940                         exit(2);
 941                 }
 942         }
 943         /* Ok, got the option parsing out of the way
 944          * hopefully it's mostly right but there might be some stuff
 945          * missing
 946          *
 947          * That is mosty checked in the per-mode stuff but...
 948          *
 949          * For @,B,C  and A without -s, the first device listed must be an md device
 950          * we check that here and open it.
 951          */
 952
 953         if (mode==MANAGE || mode == BUILD || mode == CREATE || mode == GROW ||
 954             (mode == ASSEMBLE && ! scan)) {
 955                 if (devs_found < 1) {
 956                         fprintf(stderr, Name ": an md device must be given in this mode\n");
 957                         exit(2);
 958                 }
 959                 if ((int)ident.super_minor == -2 && autof) {
 960                         fprintf(stderr, Name ": --super-minor=dev is incompatible with --auto\n");
 961                         exit(2);
 962                 }
 963                 if (mode == MANAGE || mode == GROW) {
 964                         mdfd = open_mddev(devlist->devname, 1);
 965                         if (mdfd < 0)
 966                                 exit(1);
 967                 } else
 968                         /* non-existent device is OK */
 969                         mdfd = open_mddev(devlist->devname, 0);
 970                 if (mdfd == -2) {
 971                         fprintf(stderr, Name ": device %s exists but is not an "
 972                                 "md array.\n", devlist->devname);
 973                         exit(1);
 974                 }
 975                 if ((int)ident.super_minor == -2) {
 976                         struct stat stb;
 977                         if (mdfd < 0) {
 978                                 fprintf(stderr, Name ": --super-minor=dev given, and "
 979                                         "listed device %s doesn't exist.\n",
 980                                         devlist->devname);
 981                                 exit(1);
 982                         }
 983                         fstat(mdfd, &stb);
 984                         ident.super_minor = minor(stb.st_rdev);
 985                 }
 986                 if (mdfd >= 0 && mode != MANAGE && mode != GROW) {
 987                         /* We don't really want this open yet, we just might
 988                          * have wanted to check some things
 989                          */
 990                         close(mdfd);
 991                         mdfd = -1;
 992                 }
 993         }
 994
 995         if (raiddisks) {
 996                 if (raiddisks > max_disks) {
 997                         fprintf(stderr, Name ": invalid number of raid devices: %d\n",
 998                                 raiddisks);
 999                         exit(2);
1000                 }
1001                 if (raiddisks == 1 &&  !force && level != -5) {
1002                         fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
1003                                 "     a mistake.  If you really mean it you will need to specify --force before\n"
1004                                 "     setting the number of drives.\n");
1005                         exit(2);
1006                 }
1007         }
1008         if (sparedisks) {
1009                 if ( sparedisks > max_disks - raiddisks) {
1010                         fprintf(stderr, Name ": invalid number of spare-devices: %d\n",
1011                                 sparedisks);
1012                         exit(2);
1013                 }
1014         }
1015
1016         if (homehost == NULL)
1017                 homehost = conf_get_homehost(&require_homehost);
1018         if (homehost == NULL || strcmp(homehost, "<system>")==0) {
1019                 if (gethostname(sys_hostname, sizeof(sys_hostname)) == 0) {
1020                         sys_hostname[sizeof(sys_hostname)-1] = 0;
1021                         homehost = sys_hostname;
1022                 }
1023         }
1024
1025         ident.autof = autof;
1026
1027         rv = 0;
1028         switch(mode) {
1029         case MANAGE:
1030                 /* readonly, add/remove, readwrite, runstop */
1031                 if (readonly>0)
1032                         rv = Manage_ro(devlist->devname, mdfd, readonly);
1033                 if (!rv && devs_found>1)
1034                         rv = Manage_subdevs(devlist->devname, mdfd,
1035                                             devlist->next, verbose-quiet);
1036                 if (!rv && readonly < 0)
1037                         rv = Manage_ro(devlist->devname, mdfd, readonly);
1038                 if (!rv && runstop)
1039                         rv = Manage_runstop(devlist->devname, mdfd, runstop, quiet);
1040                 break;
1041         case ASSEMBLE:
1042                 if (devs_found == 1 && ident.uuid_set == 0 &&
1043                     ident.super_minor == UnSet && ident.name[0] == 0 && !scan ) {
1044                         /* Only a device has been given, so get details from config file */
1045                         mddev_ident_t array_ident = conf_get_ident(devlist->devname);
1046                         if (array_ident == NULL) {
1047                                 fprintf(stderr, Name ": %s not identified in config file.\n",
1048                                         devlist->devname);
1049                                 rv |= 1;
1050                                 if (mdfd >= 0)
1051                                         close(mdfd);
1052                         } else {
1053                                 if (array_ident->autof == 0)
1054                                         array_ident->autof = autof;
1055                                 rv |= Assemble(ss, devlist->devname, array_ident,
1056                                                NULL, backup_file,
1057                                                readonly, runstop, update,
1058                                                homehost, require_homehost,
1059                                                verbose-quiet, force);
1060                         }
1061                 } else if (!scan)
1062                         rv = Assemble(ss, devlist->devname, &ident,
1063                                       devlist->next, backup_file,
1064                                       readonly, runstop, update,
1065                                       homehost, require_homehost,
1066                                       verbose-quiet, force);
1067                 else if (devs_found>0) {
1068                         if (update && devs_found > 1) {
1069                                 fprintf(stderr, Name ": can only update a single array at a time\n");
1070                                 exit(1);
1071                         }
1072                         if (backup_file && devs_found > 1) {
1073                                 fprintf(stderr, Name ": can only assemble a single array when providing a backup file.\n");
1074                                 exit(1);
1075                         }
1076                         for (dv = devlist ; dv ; dv=dv->next) {
1077                                 mddev_ident_t array_ident = conf_get_ident(dv->devname);
1078                                 if (array_ident == NULL) {
1079                                         fprintf(stderr, Name ": %s not identified in config file.\n",
1080                                                 dv->devname);
1081                                         rv |= 1;
1082                                         continue;
1083                                 }
1084                                 if (array_ident->autof == 0)
1085                                         array_ident->autof = autof;
1086                                 rv |= Assemble(ss, dv->devname, array_ident,
1087                                                NULL, backup_file,
1088                                                readonly, runstop, update,
1089                                                homehost, require_homehost,
1090                                                verbose-quiet, force);
1091                         }
1092                 } else {
1093                         mddev_ident_t array_list =  conf_get_ident(NULL);
1094                         mddev_dev_t devlist = conf_get_devs();
1095                         int cnt = 0;
1096                         if (devlist == NULL) {
1097                                 fprintf(stderr, Name ": No devices listed in conf file were found.\n");
1098                                 exit(1);
1099                         }
1100                         if (update) {
1101                                 fprintf(stderr, Name ": --update not meaningful with a --scan assembly.\n");
1102                                 exit(1);
1103                         }
1104                         if (backup_file) {
1105                                 fprintf(stderr, Name ": --backup_file not meaningful with a --scan assembly.\n");
1106                                 exit(1);
1107                         }
1108                         for (; array_list; array_list = array_list->next) {
1109                                 if (array_list->devname &&
1110                                     strcasecmp(array_list->devname, "<ignore>") == 0)
1111                                         continue;
1112                                 if (array_list->autof == 0)
1113                                         array_list->autof = autof;
1114
1115                                 rv |= Assemble(ss, array_list->devname,
1116                                                array_list,
1117                                                NULL, NULL,
1118                                                readonly, runstop, NULL,
1119                                                homehost, require_homehost,
1120                                                verbose-quiet, force);
1121                                 cnt++;
1122                         }
1123                         if (homehost && cnt == 0) {
1124                                 /* Maybe we can auto-assemble something.
1125                                  * Repeatedly call Assemble in auto-assemble mode
1126                                  * until it fails
1127                                  */
1128                                 int rv2;
1129                                 int acnt;
1130                                 ident.autof = autof;
1131                                 do {
1132                                         mddev_dev_t devlist = conf_get_devs();
1133                                         acnt = 0;
1134                                         do {
1135                                                 rv2 = Assemble(ss, NULL,
1136                                                                &ident,
1137                                                                devlist, NULL,
1138                                                                readonly, runstop, NULL,
1139                                                                homehost, require_homehost,
1140                                                                verbose-quiet, force);
1141                                                 if (rv2==0) {
1142                                                         cnt++;
1143                                                         acnt++;
1144                                                 }
1145                                                 if (rv2 == 1)
1146                                                         /* found something so even though assembly failed  we
1147                                                          * want to avoid auto-updates
1148                                                          */
1149                                                         auto_update_home = 0;
1150                                         } while (rv2!=2);
1151                                         /* Incase there are stacked devices, we need to go around again */
1152                                 } while (acnt);
1153 #if 0
1154                                 if (cnt == 0 && auto_update_home && homehost) {
1155                                         /* Nothing found, maybe we need to bootstrap homehost info */
1156                                         do {
1157                                                 acnt = 0;
1158                                                 do {
1159                                                         rv2 = Assemble(ss, NULL,
1160                                                                        &ident,
1161                                                                        NULL, NULL,
1162                                                                        readonly, runstop, "homehost",
1163                                                                        homehost, require_homehost,
1164                                                                        verbose-quiet, force);
1165                                                         if (rv2==0) {
1166                                                                 cnt++;
1167                                                                 acnt++;
1168                                                         }
1169                                                 } while (rv2!=2);
1170                                                 /* Incase there are stacked devices, we need to go around again */
1171                                         } while (acnt);
1172                                 }
1173 #endif
1174                                 if (cnt == 0 && rv == 0) {
1175                                         fprintf(stderr, Name ": No arrays found in config file or automatically\n");
1176                                         rv = 1;
1177                                 } else if (cnt)
1178                                         rv = 0;
1179                         } else if (cnt == 0 && rv == 0) {
1180                                 fprintf(stderr, Name ": No arrays found in config file\n");
1181                                 rv = 1;
1182                         }
1183                 }
1184                 break;
1185         case BUILD:
1186                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1187                 if (write_behind && !bitmap_file) {
1188                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1189                         rv = 1;
1190                         break;
1191                 }
1192                 if (raiddisks == 0) {
1193                         fprintf(stderr, Name ": no raid-devices specified.\n");
1194                         rv = 1;
1195                         break;
1196                 }
1197
1198                 if (bitmap_file) {
1199                         if (strcmp(bitmap_file, "internal")==0) {
1200                                 fprintf(stderr, Name ": 'internal' bitmaps not supported with --build\n");
1201                                 rv |= 1;
1202                                 break;
1203                         }
1204                 }
1205                 rv = Build(devlist->devname, chunk, level, layout,
1206                            raiddisks, devlist->next, assume_clean,
1207                            bitmap_file, bitmap_chunk, write_behind,
1208                            delay, verbose-quiet, autof, size);
1209                 break;
1210         case CREATE:
1211                 if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1212                 if (write_behind && !bitmap_file) {
1213                         fprintf(stderr, Name ": write-behind mode requires a bitmap.\n");
1214                         rv = 1;
1215                         break;
1216                 }
1217                 if (raiddisks == 0) {
1218                         fprintf(stderr, Name ": no raid-devices specified.\n");
1219                         rv = 1;
1220                         break;
1221                 }
1222
1223                 rv = Create(ss, devlist->devname, chunk, level, layout, size<0 ? 0 : size,
1224                             raiddisks, sparedisks, ident.name, homehost,
1225                             ident.uuid_set ? ident.uuid : NULL,
1226                             devs_found-1, devlist->next, runstop, verbose-quiet, force, assume_clean,
1227                             bitmap_file, bitmap_chunk, write_behind, delay, autof);
1228                 break;
1229         case MISC:
1230                 if (devmode == 'E') {
1231                         if (devlist == NULL && !scan) {
1232                                 fprintf(stderr, Name ": No devices to examine\n");
1233                                 exit(2);
1234                         }
1235                         if (devlist == NULL)
1236                                 devlist = conf_get_devs();
1237                         if (devlist == NULL) {
1238                                 fprintf(stderr, Name ": No devices listed in %s\n", configfile?configfile:DefaultConfFile);
1239                                 exit(1);
1240                         }
1241                         if (brief && verbose)
1242                                 brief = 2;
1243                         rv = Examine(devlist, scan?(verbose>1?0:verbose+1):brief,
1244                                      export, scan,
1245                                      SparcAdjust, ss, homehost);
1246                 } else if (devmode == DetailPlatform) {
1247                         rv = Detail_Platform(ss ? ss->ss : NULL, ss ? scan : 1, verbose);
1248                 } else {
1249                         if (devlist == NULL) {
1250                                 if ((devmode=='D' || devmode == Waitclean) && scan) {
1251                                         /* apply --detail or --wait-clean to
1252                                          * all devices in /proc/mdstat
1253                                          */
1254                                         struct mdstat_ent *ms = mdstat_read(0, 1);
1255                                         struct mdstat_ent *e;
1256                                         struct map_ent *map = NULL;
1257                                         int v = verbose>1?0:verbose+1;
1258
1259                                         for (e=ms ; e ; e=e->next) {
1260                                                 char *name;
1261                                                 struct map_ent *me;
1262                                                 me = map_by_devnum(&map, e->devnum);
1263                                                 if (me && me->path
1264                                                     && strcmp(me->path, "/unknown") != 0)
1265                                                         name = me->path;
1266                                                 else
1267                                                         name = get_md_name(e->devnum);
1268
1269                                                 if (!name) {
1270                                                         fprintf(stderr, Name ": cannot find device file for %s\n",
1271                                                                 e->dev);
1272                                                         continue;
1273                                                 }
1274                                                 if (devmode == 'D')
1275                                                         rv |= Detail(name, v,
1276                                                                      export, test,
1277                                                                      homehost);
1278                                                 else
1279                                                         rv |= WaitClean(name, v);
1280                                                 put_md_name(name);
1281                                         }
1282                                         free_mdstat(ms);
1283                                 } else  if (devmode == 'S' && scan) {
1284                                         /* apply --stop to all devices in /proc/mdstat */
1285                                         /* Due to possible stacking of devices, repeat until
1286                                          * nothing more can be stopped
1287                                          */
1288                                         int progress=1, err;
1289                                         int last = 0;
1290                                         do {
1291                                                 struct mdstat_ent *ms = mdstat_read(0, 0);
1292                                                 struct mdstat_ent *e;
1293
1294                                                 if (!progress) last = 1;
1295                                                 progress = 0; err = 0;
1296                                                 for (e=ms ; e ; e=e->next) {
1297                                                         char *name = get_md_name(e->devnum);
1298
1299                                                         if (!name) {
1300                                                                 fprintf(stderr, Name ": cannot find device file for %s\n",
1301                                                                         e->dev);
1302                                                                 continue;
1303                                                         }
1304                                                         mdfd = open_mddev(name, 1);
1305                                                         if (mdfd >= 0) {
1306                                                                 if (Manage_runstop(name, mdfd, -1, quiet?1:last?0:-1))
1307                                                                         err = 1;
1308                                                                 else
1309                                                                         progress = 1;
1310                                                                 close(mdfd);
1311                                                         }
1312
1313                                                         put_md_name(name);
1314                                                 }
1315                                                 free_mdstat(ms);
1316                                         } while (!last && err);
1317                                         if (err) rv |= 1;
1318                                 } else {
1319                                         fprintf(stderr, Name ": No devices given.\n");
1320                                         exit(2);
1321                                 }
1322                         }
1323                         for (dv=devlist ; dv; dv=dv->next) {
1324                                 switch(dv->disposition) {
1325                                 case 'D':
1326                                         rv |= Detail(dv->devname,
1327                                                      brief?1+verbose:0,
1328                                                      export, test, homehost);
1329                                         continue;
1330                                 case 'K': /* Zero superblock */
1331                                         rv |= Kill(dv->devname, force, quiet,0);
1332                                         continue;
1333                                 case 'Q':
1334                                         rv |= Query(dv->devname); continue;
1335                                 case 'X':
1336                                         rv |= ExamineBitmap(dv->devname, brief, ss); continue;
1337                                 case 'W':
1338                                         rv |= Wait(dv->devname); continue;
1339                                 case Waitclean:
1340                                         rv |= WaitClean(dv->devname, verbose-quiet); continue;
1341                                 }
1342                                 mdfd = open_mddev(dv->devname, 1);
1343                                 if (mdfd>=0) {
1344                                         switch(dv->disposition) {
1345                                         case 'R':
1346                                                 rv |= Manage_runstop(dv->devname, mdfd, 1, quiet); break;
1347                                         case 'S':
1348                                                 rv |= Manage_runstop(dv->devname, mdfd, -1, quiet); break;
1349                                         case 'o':
1350                                                 rv |= Manage_ro(dv->devname, mdfd, 1); break;
1351                                         case 'w':
1352                                                 rv |= Manage_ro(dv->devname, mdfd, -1); break;
1353                                         }
1354                                         close(mdfd);
1355                                 } else
1356                                         rv |= 1;
1357                         }
1358                 }
1359                 break;
1360         case MONITOR:
1361                 if (!devlist && !scan) {
1362                         fprintf(stderr, Name ": Cannot monitor: need --scan or at least one device\n");
1363                         rv = 1;
1364                         break;
1365                 }
1366                 if (pidfile && !daemonise) {
1367                         fprintf(stderr, Name ": Cannot write a pid file when not in daemon mode\n");
1368                         rv = 1;
1369                         break;
1370                 }
1371                 if (delay == 0) {
1372                         if (get_linux_version() > 20616)
1373                                 /* mdstat responds to poll */
1374                                 delay = 1000;
1375                         else
1376                                 delay = 60;
1377                 }
1378                 rv= Monitor(devlist, mailaddr, program,
1379                             delay?delay:60, daemonise, scan, oneshot,
1380                             dosyslog, test, pidfile);
1381                 break;
1382
1383         case GROW:
1384                 if (devs_found > 1) {
1385
1386                         /* must be '-a'. */
1387                         if (size >= 0 || raiddisks) {
1388                                 fprintf(stderr, Name ": --size, --raiddisks, and --add are exclusing in --grow mode\n");
1389                                 rv = 1;
1390                                 break;
1391                         }
1392                         for (dv=devlist->next; dv ; dv=dv->next) {
1393                                 rv = Grow_Add_device(devlist->devname, mdfd, dv->devname);
1394                                 if (rv)
1395                                         break;
1396                         }
1397                 } else if ((size >= 0) + (raiddisks != 0) +  (layout != UnSet) + (bitmap_file != NULL)> 1) {
1398                         fprintf(stderr, Name ": can change at most one of size, raiddisks, bitmap, and layout\n");
1399                         rv = 1;
1400                         break;
1401                 } else if (layout != UnSet)
1402                         rv = Manage_reconfig(devlist->devname, mdfd, layout);
1403                 else if (size >= 0 || raiddisks)
1404                         rv = Grow_reshape(devlist->devname, mdfd, quiet, backup_file,
1405                                           size, level, layout, chunk, raiddisks);
1406                 else if (bitmap_file) {
1407                         if (delay == 0) delay = DEFAULT_BITMAP_DELAY;
1408                         rv = Grow_addbitmap(devlist->devname, mdfd, bitmap_file,
1409                                             bitmap_chunk, delay, write_behind, force);
1410                 } else
1411                         fprintf(stderr, Name ": no changes to --grow\n");
1412                 break;
1413         case INCREMENTAL:
1414                 if (rebuild_map) {
1415                         RebuildMap();
1416                 }
1417                 if (scan) {
1418                         if (runstop <= 0) {
1419                                 fprintf(stderr, Name
1420                          ": --incremental --scan meaningless without --run.\n");
1421                                 break;
1422                         }
1423                         rv = IncrementalScan(verbose);
1424                 }
1425                 if (!devlist) {
1426                         if (!rebuild_map && !scan) {
1427                                 fprintf(stderr, Name
1428                                         ": --incremental requires a device.\n");
1429                                 rv = 1;
1430                         }
1431                         break;
1432                 }
1433                 if (devlist->next) {
1434                         fprintf(stderr, Name
1435                                ": --incremental can only handle one device.\n");
1436                         rv = 1;
1437                         break;
1438                 }
1439                 rv = Incremental(devlist->devname, verbose-quiet, runstop,
1440                                  ss, homehost, require_homehost, autof);
1441                 break;
1442         case AUTODETECT:
1443                 autodetect();
1444                 break;
1445         }
1446         exit(rv);
1447 }