release/src/router/mdadm/config.c

   1 /*
   2  * mdadm - manage Linux "md" devices aka RAID arrays.
   3  *
   4  * Copyright (C) 2001-2006 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@cse.unsw.edu.au>
  23  *    Paper: Neil Brown
  24  *           School of Computer Science and Engineering
  25  *           The University of New South Wales
  26  *           Sydney, 2052
  27  *           Australia
  28  */
  29
  30 #include        "mdadm.h"
  31 #include        "dlink.h"
  32 #include        <sys/dir.h>
  33 #include        <glob.h>
  34 #include        <fnmatch.h>
  35 #include        <ctype.h>
  36 #include        <pwd.h>
  37 #include        <grp.h>
  38
  39 /*
  40  * Read the config file
  41  *
  42  * conf_get_uuids gets a list of devicename+uuid pairs
  43  * conf_get_devs gets device names after expanding wildcards
  44  *
  45  * Each keeps the returned list and frees it when asked to make
  46  * a new list.
  47  *
  48  * The format of the config file needs to be fairly extensible.
  49  * Now, arrays only have names and uuids and devices merely are.
  50  * But later arrays might want names, and devices might want superblock
  51  * versions, and who knows what else.
  52  * I like free format, abhore backslash line continuation, adore
  53  *   indentation for structure and am ok about # comments.
  54  *
  55  * So, each line that isn't blank or a #comment must either start
  56  *  with a key word, and not be indented, or must start with a
  57  *  non-key-word and must be indented.
  58  *
  59  * Keywords are DEVICE and ARRAY
  60  * DEV{ICE} introduces some devices that might contain raid components.
  61  * e.g.
  62  *   DEV style=0 /dev/sda* /dev/hd*
  63  *   DEV style=1 /dev/sd[b-f]*
  64  * ARR{AY} describes an array giving md device and attributes like uuid=whatever
  65  * e.g.
  66  *   ARRAY /dev/md0 uuid=whatever name=something
  67  * Spaces separate words on each line.  Quoting, with "" or '' protects them,
  68  * but may not wrap over lines
  69  *
  70  */
  71
  72 #ifndef CONFFILE
  73 #define CONFFILE "/etc/mdadm.conf"
  74 #endif
  75 #ifndef CONFFILE2
  76 /* for Debian compatibility .... */
  77 #define CONFFILE2 "/etc/mdadm/mdadm.conf"
  78 #endif
  79 char DefaultConfFile[] = CONFFILE;
  80 char DefaultAltConfFile[] = CONFFILE2;
  81
  82 enum linetype { Devices, Array, Mailaddr, Mailfrom, Program, CreateDev, Homehost, LTEnd };
  83 char *keywords[] = {
  84         [Devices]  = "devices",
  85         [Array]    = "array",
  86         [Mailaddr] = "mailaddr",
  87         [Mailfrom] = "mailfrom",
  88         [Program]  = "program",
  89         [CreateDev]= "create",
  90         [Homehost] = "homehost",
  91         [LTEnd]    = NULL
  92 };
  93
  94 /*
  95  * match_keyword returns an index into the keywords array, or -1 for no match
  96  * case is ignored, and at least three characters must be given
  97  */
  98
  99 int match_keyword(char *word)
 100 {
 101         int len = strlen(word);
 102         int n;
 103
 104         if (len < 3) return -1;
 105         for (n=0; keywords[n]; n++) {
 106                 if (strncasecmp(word, keywords[n], len)==0)
 107                         return n;
 108         }
 109         return -1;
 110 }
 111
 112 /* conf_word gets one word from the conf file.
 113  * if "allow_key", then accept words at the start of a line,
 114  * otherwise stop when such a word is found.
 115  * We assume that the file pointer is at the end of a word, so the
 116  * next character is a space, or a newline.  If not, it is the start of a line.
 117  */
 118
 119 char *conf_word(FILE *file, int allow_key)
 120 {
 121         int wsize = 100;
 122         int len = 0;
 123         int c;
 124         int quote;
 125         int wordfound = 0;
 126         char *word = malloc(wsize);
 127
 128         if (!word) abort();
 129
 130         while (wordfound==0) {
 131                 /* at the end of a word.. */
 132                 c = getc(file);
 133                 if (c == '#')
 134                         while (c != EOF && c != '\n')
 135                                 c = getc(file);
 136                 if (c == EOF) break;
 137                 if (c == '\n') continue;
 138
 139                 if (c != ' ' && c != '\t' && ! allow_key) {
 140                         ungetc(c, file);
 141                         break;
 142                 }
 143                 /* looks like it is safe to get a word here, if there is one */
 144                 quote = 0;
 145                 /* first, skip any spaces */
 146                 while (c == ' ' || c == '\t')
 147                         c = getc(file);
 148                 if (c != EOF && c != '\n' && c != '#') {
 149                         /* we really have a character of a word, so start saving it */
 150                         while (c != EOF && c != '\n' && (quote || (c!=' ' && c != '\t'))) {
 151                                 wordfound = 1;
 152                                 if (quote && c == quote) quote = 0;
 153                                 else if (quote == 0 && (c == '\'' || c == '"'))
 154                                         quote = c;
 155                                 else {
 156                                         if (len == wsize-1) {
 157                                                 wsize += 100;
 158                                                 word = realloc(word, wsize);
 159                                                 if (!word) abort();
 160                                         }
 161                                         word[len++] = c;
 162                                 }
 163                                 c = getc(file);
 164                         }
 165                 }
 166                 if (c != EOF) ungetc(c, file);
 167         }
 168         word[len] = 0;
 169 /*    printf("word is <%s>\n", word); */
 170         if (!wordfound) {
 171                 free(word);
 172                 word = NULL;
 173         }
 174         return word;
 175 }
 176
 177 /*
 178  * conf_line reads one logical line from the conffile.
 179  * It skips comments and continues until it finds a line that starts
 180  * with a non blank/comment.  This character is pushed back for the next call
 181  * A doubly linked list of words is returned.
 182  * the first word will be a keyword.  Other words will have had quotes removed.
 183  */
 184
 185 char *conf_line(FILE *file)
 186 {
 187         char *w;
 188         char *list;
 189
 190         w = conf_word(file, 1);
 191         if (w == NULL) return NULL;
 192
 193         list = dl_strdup(w);
 194         free(w);
 195         dl_init(list);
 196
 197         while ((w = conf_word(file,0))){
 198                 char *w2 = dl_strdup(w);
 199                 free(w);
 200                 dl_add(list, w2);
 201         }
 202 /*    printf("got a line\n");*/
 203         return list;
 204 }
 205
 206 void free_line(char *line)
 207 {
 208         char *w;
 209         for (w=dl_next(line); w != line; w=dl_next(line)) {
 210                 dl_del(w);
 211                 dl_free(w);
 212         }
 213         dl_free(line);
 214 }
 215
 216
 217 struct conf_dev {
 218     struct conf_dev *next;
 219     char *name;
 220 } *cdevlist = NULL;
 221
 222 mddev_dev_t load_partitions(void)
 223 {
 224         FILE *f = fopen("/proc/partitions", "r");
 225         char buf[1024];
 226         mddev_dev_t rv = NULL;
 227         if (f == NULL) {
 228                 fprintf(stderr, Name ": cannot open /proc/partitions\n");
 229                 return NULL;
 230         }
 231         while (fgets(buf, 1024, f)) {
 232                 int major, minor;
 233                 char *name, *mp;
 234                 mddev_dev_t d;
 235
 236                 buf[1023] = '\0';
 237                 if (buf[0] != ' ')
 238                         continue;
 239                 major = strtoul(buf, &mp, 10);
 240                 if (mp == buf || *mp != ' ')
 241                         continue;
 242                 minor = strtoul(mp, NULL, 10);
 243
 244                 name = map_dev(major, minor, 1);
 245                 if (!name)
 246                         continue;
 247                 d = malloc(sizeof(*d));
 248                 d->devname = strdup(name);
 249                 d->next = rv;
 250                 d->used = 0;
 251                 rv = d;
 252         }
 253         fclose(f);
 254         return rv;
 255 }
 256
 257 struct createinfo createinfo = {
 258         .autof = 2, /* by default, create devices with standard names */
 259         .symlinks = 1,
 260 #ifdef DEBIAN
 261         .gid = 6, /* disk */
 262         .mode = 0660,
 263 #else
 264         .mode = 0600,
 265 #endif
 266 };
 267
 268 int parse_auto(char *str, char *msg, int config)
 269 {
 270         int autof;
 271         if (str == NULL || *str == 0)
 272                 autof = 2;
 273         else if (strcasecmp(str,"no")==0)
 274                 autof = 1;
 275         else if (strcasecmp(str,"yes")==0)
 276                 autof = 2;
 277         else if (strcasecmp(str,"md")==0)
 278                 autof = config?5:3;
 279         else {
 280                 /* There might be digits, and maybe a hypen, at the end */
 281                 char *e = str + strlen(str);
 282                 int num = 4;
 283                 int len;
 284                 while (e > str && isdigit(e[-1]))
 285                         e--;
 286                 if (*e) {
 287                         num = atoi(e);
 288                         if (num <= 0) num = 1;
 289                 }
 290                 if (e > str && e[-1] == '-')
 291                         e--;
 292                 len = e - str;
 293                 if ((len == 2 && strncasecmp(str,"md",2)==0)) {
 294                         autof = config ? 5 : 3;
 295                 } else if ((len == 3 && strncasecmp(str,"yes",3)==0)) {
 296                         autof = 2;
 297                 } else if ((len == 3 && strncasecmp(str,"mdp",3)==0)) {
 298                         autof = config ? 6 : 4;
 299                 } else if ((len == 1 && strncasecmp(str,"p",1)==0) ||
 300                            (len >= 4 && strncasecmp(str,"part",4)==0)) {
 301                         autof = 6;
 302                 } else {
 303                         fprintf(stderr, Name ": %s arg of \"%s\" unrecognised: use no,yes,md,mdp,part\n"
 304                                 "        optionally followed by a number.\n",
 305                                 msg, str);
 306                         exit(2);
 307                 }
 308                 autof |= num << 3;
 309         }
 310         return autof;
 311 }
 312
 313 static void createline(char *line)
 314 {
 315         char *w;
 316         char *ep;
 317
 318         for (w=dl_next(line); w!=line; w=dl_next(w)) {
 319                 if (strncasecmp(w, "auto=", 5) == 0)
 320                         createinfo.autof = parse_auto(w+5, "auto=", 1);
 321                 else if (strncasecmp(w, "owner=", 6) == 0) {
 322                         if (w[6] == 0) {
 323                                 fprintf(stderr, Name ": missing owner name\n");
 324                                 continue;
 325                         }
 326                         createinfo.uid = strtoul(w+6, &ep, 10);
 327                         if (*ep != 0) {
 328                                 struct passwd *pw;
 329                                 /* must be a name */
 330                                 pw = getpwnam(w+6);
 331                                 if (pw)
 332                                         createinfo.uid = pw->pw_uid;
 333                                 else
 334                                         fprintf(stderr, Name ": CREATE user %s not found\n", w+6);
 335                         }
 336                 } else if (strncasecmp(w, "group=", 6) == 0) {
 337                         if (w[6] == 0) {
 338                                 fprintf(stderr, Name ": missing group name\n");
 339                                 continue;
 340                         }
 341                         createinfo.gid = strtoul(w+6, &ep, 10);
 342                         if (*ep != 0) {
 343                                 struct group *gr;
 344                                 /* must be a name */
 345                                 gr = getgrnam(w+6);
 346                                 if (gr)
 347                                         createinfo.gid = gr->gr_gid;
 348                                 else
 349                                         fprintf(stderr, Name ": CREATE group %s not found\n", w+6);
 350                         }
 351                 } else if (strncasecmp(w, "mode=", 5) == 0) {
 352                         if (w[5] == 0) {
 353                                 fprintf(stderr, Name ": missing CREATE mode\n");
 354                                 continue;
 355                         }
 356                         createinfo.mode = strtoul(w+5, &ep, 8);
 357                         if (*ep != 0) {
 358                                 createinfo.mode = 0600;
 359                                 fprintf(stderr, Name ": unrecognised CREATE mode %s\n",
 360                                         w+5);
 361                         }
 362                 } else if (strncasecmp(w, "metadata=", 9) == 0) {
 363                         /* style of metadata to use by default */
 364                         int i;
 365                         for (i=0; superlist[i] && !createinfo.supertype; i++)
 366                                 createinfo.supertype =
 367                                         superlist[i]->match_metadata_desc(w+9);
 368                         if (!createinfo.supertype)
 369                                 fprintf(stderr, Name ": metadata format %s unknown, ignoring\n",
 370                                         w+9);
 371                 } else if (strncasecmp(w, "symlinks=yes", 12) == 0)
 372                         createinfo.symlinks = 1;
 373                 else if  (strncasecmp(w, "symlinks=no", 11) == 0)
 374                         createinfo.symlinks = 0;
 375                 else {
 376                         fprintf(stderr, Name ": unrecognised word on CREATE line: %s\n",
 377                                 w);
 378                 }
 379         }
 380 }
 381
 382 void devline(char *line)
 383 {
 384         char *w;
 385         struct conf_dev *cd;
 386
 387         for (w=dl_next(line); w != line; w=dl_next(w)) {
 388                 if (w[0] == '/' || strcasecmp(w, "partitions") == 0) {
 389                         cd = malloc(sizeof(*cd));
 390                         cd->name = strdup(w);
 391                         cd->next = cdevlist;
 392                         cdevlist = cd;
 393                 } else {
 394                         fprintf(stderr, Name ": unreconised word on DEVICE line: %s\n",
 395                                 w);
 396                 }
 397         }
 398 }
 399
 400 mddev_ident_t mddevlist = NULL;
 401 mddev_ident_t *mddevlp = &mddevlist;
 402
 403 void arrayline(char *line)
 404 {
 405         char *w;
 406
 407         struct mddev_ident_s mis;
 408         mddev_ident_t mi;
 409
 410         mis.uuid_set = 0;
 411         mis.super_minor = UnSet;
 412         mis.level = UnSet;
 413         mis.raid_disks = UnSet;
 414         mis.spare_disks = 0;
 415         mis.devices = NULL;
 416         mis.devname = NULL;
 417         mis.spare_group = NULL;
 418         mis.autof = 0;
 419         mis.next = NULL;
 420         mis.st = NULL;
 421         mis.bitmap_fd = -1;
 422         mis.bitmap_file = NULL;
 423         mis.name[0] = 0;
 424
 425         for (w=dl_next(line); w!=line; w=dl_next(w)) {
 426                 if (w[0] == '/') {
 427                         if (mis.devname)
 428                                 fprintf(stderr, Name ": only give one device per ARRAY line: %s and %s\n",
 429                                         mis.devname, w);
 430                         else mis.devname = w;
 431                 } else if (strncasecmp(w, "uuid=", 5)==0 ) {
 432                         if (mis.uuid_set)
 433                                 fprintf(stderr, Name ": only specify uuid once, %s ignored.\n",
 434                                         w);
 435                         else {
 436                                 if (parse_uuid(w+5, mis.uuid))
 437                                         mis.uuid_set = 1;
 438                                 else
 439                                         fprintf(stderr, Name ": bad uuid: %s\n", w);
 440                         }
 441                 } else if (strncasecmp(w, "super-minor=", 12)==0 ) {
 442                         if (mis.super_minor != UnSet)
 443                                 fprintf(stderr, Name ": only specify super-minor once, %s ignored.\n",
 444                                         w);
 445                         else {
 446                                 char *endptr;
 447                                 mis.super_minor= strtol(w+12, &endptr, 10);
 448                                 if (w[12]==0 || endptr[0]!=0 || mis.super_minor < 0) {
 449                                         fprintf(stderr, Name ": invalid super-minor number: %s\n",
 450                                                 w);
 451                                         mis.super_minor = UnSet;
 452                                 }
 453                         }
 454                 } else if (strncasecmp(w, "name=", 5)==0) {
 455                         if (mis.name[0])
 456                                 fprintf(stderr, Name ": only specify name once, %s ignored.\n",
 457                                         w);
 458                         else if (strlen(w+5) > 32)
 459                                 fprintf(stderr, Name ": name too long, ignoring %s\n", w);
 460                         else
 461                                 strcpy(mis.name, w+5);
 462
 463                 } else if (strncasecmp(w, "bitmap=", 7) == 0) {
 464                         if (mis.bitmap_file)
 465                                 fprintf(stderr, Name ": only specify bitmap file once. %s ignored\n",
 466                                         w);
 467                         else
 468                                 mis.bitmap_file = strdup(w+7);
 469
 470                 } else if (strncasecmp(w, "devices=", 8 ) == 0 ) {
 471                         if (mis.devices)
 472                                 fprintf(stderr, Name ": only specify devices once (use a comma separated list). %s ignored\n",
 473                                         w);
 474                         else
 475                                 mis.devices = strdup(w+8);
 476                 } else if (strncasecmp(w, "spare-group=", 12) == 0 ) {
 477                         if (mis.spare_group)
 478                                 fprintf(stderr, Name ": only specify one spare group per array. %s ignored.\n",
 479                                         w);
 480                         else
 481                                 mis.spare_group = strdup(w+12);
 482                 } else if (strncasecmp(w, "level=", 6) == 0 ) {
 483                         /* this is mainly for compatability with --brief output */
 484                         mis.level = map_name(pers, w+6);
 485                 } else if (strncasecmp(w, "disks=", 6) == 0 ) {
 486                         /* again, for compat */
 487                         mis.raid_disks = atoi(w+6);
 488                 } else if (strncasecmp(w, "num-devices=", 12) == 0 ) {
 489                         /* again, for compat */
 490                         mis.raid_disks = atoi(w+12);
 491                 } else if (strncasecmp(w, "spares=", 7) == 0 ) {
 492                         /* for warning if not all spares present */
 493                         mis.spare_disks = atoi(w+7);
 494                 } else if (strncasecmp(w, "metadata=", 9) == 0) {
 495                         /* style of metadata on the devices. */
 496                         int i;
 497
 498                         for(i=0; superlist[i] && !mis.st; i++)
 499                                 mis.st = superlist[i]->match_metadata_desc(w+9);
 500
 501                         if (!mis.st)
 502                                 fprintf(stderr, Name ": metadata format %s unknown, ignored.\n", w+9);
 503                 } else if (strncasecmp(w, "auto=", 5) == 0 ) {
 504                         /* whether to create device special files as needed */
 505                         mis.autof = parse_auto(w+5, "auto type", 0);
 506                 } else {
 507                         fprintf(stderr, Name ": unrecognised word on ARRAY line: %s\n",
 508                                 w);
 509                 }
 510         }
 511         if (mis.devname == NULL)
 512                 fprintf(stderr, Name ": ARRAY line with no device\n");
 513         else if (mis.uuid_set == 0 && mis.devices == NULL && mis.super_minor == UnSet && mis.name[0] == 0)
 514                 fprintf(stderr, Name ": ARRAY line %s has no identity information.\n", mis.devname);
 515         else {
 516                 mi = malloc(sizeof(*mi));
 517                 *mi = mis;
 518                 mi->devname = strdup(mis.devname);
 519                 mi->next = NULL;
 520                 *mddevlp = mi;
 521                 mddevlp = &mi->next;
 522         }
 523 }
 524
 525 static char *alert_email = NULL;
 526 void mailline(char *line)
 527 {
 528         char *w;
 529
 530         for (w=dl_next(line); w != line ; w=dl_next(w)) {
 531                 if (alert_email == NULL)
 532                         alert_email = strdup(w);
 533                 else
 534                         fprintf(stderr, Name ": excess address on MAIL line: %s - ignored\n",
 535                                 w);
 536         }
 537 }
 538
 539 static char *alert_mail_from = NULL;
 540 void mailfromline(char *line)
 541 {
 542         char *w;
 543
 544         for (w=dl_next(line); w != line ; w=dl_next(w)) {
 545                 if (alert_mail_from == NULL)
 546                         alert_mail_from = strdup(w);
 547                 else {
 548                         char *t= NULL;
 549                         asprintf(&t, "%s %s", alert_mail_from, w);
 550                         free(alert_mail_from);
 551                         alert_mail_from = t;
 552                 }
 553         }
 554 }
 555
 556
 557 static char *alert_program = NULL;
 558 void programline(char *line)
 559 {
 560         char *w;
 561
 562         for (w=dl_next(line); w != line ; w=dl_next(w)) {
 563                 if (alert_program == NULL)
 564                         alert_program = strdup(w);
 565                 else
 566                         fprintf(stderr, Name ": excess program on PROGRAM line: %s - ignored\n",
 567                                 w);
 568         }
 569 }
 570
 571 static char *home_host = NULL;
 572 void homehostline(char *line)
 573 {
 574         char *w;
 575
 576         for (w=dl_next(line); w != line ; w=dl_next(w)) {
 577                 if (home_host == NULL)
 578                         home_host = strdup(w);
 579                 else
 580                         fprintf(stderr, Name ": excess host name on HOMEHOST line: %s - ignored\n",
 581                                 w);
 582         }
 583 }
 584
 585
 586 int loaded = 0;
 587
 588 static char *conffile = NULL;
 589 void set_conffile(char *file)
 590 {
 591         conffile = file;
 592 }
 593
 594 void load_conffile(void)
 595 {
 596         FILE *f;
 597         char *line;
 598
 599         if (loaded) return;
 600         if (conffile == NULL)
 601                 conffile = DefaultConfFile;
 602
 603         if (strcmp(conffile, "none") == 0) {
 604                 loaded = 1;
 605                 return;
 606         }
 607         if (strcmp(conffile, "partitions")==0) {
 608                 char *list = dl_strdup("DEV");
 609                 dl_init(list);
 610                 dl_add(list, dl_strdup("partitions"));
 611                 devline(list);
 612                 free_line(list);
 613                 loaded = 1;
 614                 return;
 615         }
 616         f = fopen(conffile, "r");
 617         /* Debian chose to relocate mdadm.conf into /etc/mdadm/.
 618          * To allow Debian users to compile from clean source and still
 619          * have a working mdadm, we read /etc/mdadm/mdadm.conf
 620          * if /etc/mdadm.conf doesn't exist
 621          */
 622         if (f == NULL &&
 623             conffile == DefaultConfFile) {
 624                 f = fopen(DefaultAltConfFile, "r");
 625                 if (f)
 626                         conffile = DefaultAltConfFile;
 627         }
 628         if (f == NULL)
 629                 return;
 630
 631         loaded = 1;
 632         while ((line=conf_line(f))) {
 633                 switch(match_keyword(line)) {
 634                 case Devices:
 635                         devline(line);
 636                         break;
 637                 case Array:
 638                         arrayline(line);
 639                         break;
 640                 case Mailaddr:
 641                         mailline(line);
 642                         break;
 643                 case Mailfrom:
 644                         mailfromline(line);
 645                         break;
 646                 case Program:
 647                         programline(line);
 648                         break;
 649                 case CreateDev:
 650                         createline(line);
 651                         break;
 652                 case Homehost:
 653                         homehostline(line);
 654                         break;
 655                 default:
 656                         fprintf(stderr, Name ": Unknown keyword %s\n", line);
 657                 }
 658                 free_line(line);
 659         }
 660
 661         fclose(f);
 662
 663 /*    printf("got file\n"); */
 664 }
 665
 666 char *conf_get_mailaddr(void)
 667 {
 668         load_conffile();
 669         return alert_email;
 670 }
 671
 672 char *conf_get_mailfrom(void)
 673 {
 674         load_conffile();
 675         return alert_mail_from;
 676 }
 677
 678 char *conf_get_program(void)
 679 {
 680         load_conffile();
 681         return alert_program;
 682 }
 683
 684 char *conf_get_homehost(void)
 685 {
 686         load_conffile();
 687         return home_host;
 688 }
 689
 690 struct createinfo *conf_get_create_info(void)
 691 {
 692         load_conffile();
 693         return &createinfo;
 694 }
 695
 696 mddev_ident_t conf_get_ident(char *dev)
 697 {
 698         mddev_ident_t rv;
 699         load_conffile();
 700         rv = mddevlist;
 701         while (dev && rv && strcmp(dev, rv->devname)!=0)
 702                 rv = rv->next;
 703         return rv;
 704 }
 705
 706 mddev_dev_t conf_get_devs()
 707 {
 708         glob_t globbuf;
 709         struct conf_dev *cd;
 710         int flags = 0;
 711         static mddev_dev_t dlist = NULL;
 712         unsigned int i;
 713
 714         while (dlist) {
 715                 mddev_dev_t t = dlist;
 716                 dlist = dlist->next;
 717                 free(t->devname);
 718                 free(t);
 719         }
 720
 721         load_conffile();
 722
 723         if (cdevlist == NULL)
 724                 /* default to 'partitions */
 725                 dlist = load_partitions();
 726
 727         for (cd=cdevlist; cd; cd=cd->next) {
 728                 if (strcasecmp(cd->name, "partitions")==0 && dlist == NULL)
 729                         dlist = load_partitions();
 730                 else {
 731                         glob(cd->name, flags, NULL, &globbuf);
 732                         flags |= GLOB_APPEND;
 733                 }
 734         }
 735         if (flags & GLOB_APPEND) {
 736                 for (i=0; i<globbuf.gl_pathc; i++) {
 737                         mddev_dev_t t = malloc(sizeof(*t));
 738                         t->devname = strdup(globbuf.gl_pathv[i]);
 739                         t->next = dlist;
 740                         t->used = 0;
 741                         dlist = t;
 742 /*      printf("one dev is %s\n", t->devname);*/
 743                 }
 744                 globfree(&globbuf);
 745         }
 746
 747         return dlist;
 748 }
 749
 750 int conf_test_dev(char *devname)
 751 {
 752         struct conf_dev *cd;
 753         if (cdevlist == NULL)
 754                 /* allow anything by default */
 755                 return 1;
 756         for (cd = cdevlist ; cd ; cd = cd->next) {
 757                 if (strcasecmp(cd->name, "partitions") == 0)
 758                         return 1;
 759                 if (fnmatch(cd->name, devname, FNM_PATHNAME) == 0)
 760                         return 1;
 761         }
 762         return 0;
 763 }
 764
 765
 766 int match_oneof(char *devices, char *devname)
 767 {
 768     /* check if one of the comma separated patterns in devices
 769      * matches devname
 770      */
 771
 772
 773     while (devices && *devices) {
 774         char patn[1024];
 775         char *p = devices;
 776         devices = strchr(devices, ',');
 777         if (!devices)
 778             devices = p + strlen(p);
 779         if (devices-p < 1024) {
 780                 strncpy(patn, p, devices-p);
 781                 patn[devices-p] = 0;
 782                 if (fnmatch(patn, devname, FNM_PATHNAME)==0)
 783                         return 1;
 784         }
 785         if (*devices == ',')
 786                 devices++;
 787     }
 788     return 0;
 789 }