namedev.c

   1 /*
   2  * namedev.c
   3  *
   4  * Userspace devfs
   5  *
   6  * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
   7  *
   8  *
   9  *      This program is free software; you can redistribute it and/or modify it
  10  *      under the terms of the GNU General Public License as published by the
  11  *      Free Software Foundation version 2 of the License.
  12  *
  13  *      This program is distributed in the hope that it will be useful, but
  14  *      WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *      General Public License for more details.
  17  *
  18  *      You should have received a copy of the GNU General Public License along
  19  *      with this program; if not, write to the Free Software Foundation, Inc.,
  20  *      675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  */
  23
  24 /* define this to enable parsing debugging */
  25 /* #define DEBUG_PARSER */
  26
  27 #include <stddef.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <stdio.h>
  31 #include <fcntl.h>
  32 #include <ctype.h>
  33 #include <unistd.h>
  34 #include <errno.h>
  35 #include <sys/wait.h>
  36
  37 #include "list.h"
  38 #include "udev.h"
  39 #include "udev_version.h"
  40 #include "namedev.h"
  41 #include "libsysfs/libsysfs.h"
  42
  43 #define TYPE_LABEL      "LABEL"
  44 #define TYPE_NUMBER     "NUMBER"
  45 #define TYPE_TOPOLOGY   "TOPOLOGY"
  46 #define TYPE_REPLACE    "REPLACE"
  47 #define TYPE_CALLOUT    "CALLOUT"
  48
  49 static LIST_HEAD(config_device_list);
  50
  51 static void dump_dev(struct config_device *dev)
  52 {
  53         switch (dev->type) {
  54         case KERNEL_NAME:
  55                 dbg_parse("KERNEL name ='%s'"
  56                         " owner = '%s', group = '%s', mode = '%#o'",
  57                         dev->attr.name,
  58                         dev->attr.owner, dev->attr.group, dev->attr.mode);
  59                 break;
  60         case LABEL:
  61                 dbg_parse("LABEL name = '%s', bus = '%s', sysfs_file = '%s', sysfs_value = '%s'"
  62                         " owner = '%s', group = '%s', mode = '%#o'",
  63                         dev->attr.name, dev->bus, dev->sysfs_file, dev->sysfs_value,
  64                         dev->attr.owner, dev->attr.group, dev->attr.mode);
  65                 break;
  66         case NUMBER:
  67                 dbg_parse("NUMBER name = '%s', bus = '%s', id = '%s'"
  68                         " owner = '%s', group = '%s', mode = '%#o'",
  69                         dev->attr.name, dev->bus, dev->id,
  70                         dev->attr.owner, dev->attr.group, dev->attr.mode);
  71                 break;
  72         case TOPOLOGY:
  73                 dbg_parse("TOPOLOGY name = '%s', bus = '%s', place = '%s'"
  74                         " owner = '%s', group = '%s', mode = '%#o'",
  75                         dev->attr.name, dev->bus, dev->place,
  76                         dev->attr.owner, dev->attr.group, dev->attr.mode);
  77                 break;
  78         case REPLACE:
  79                 dbg_parse("REPLACE name = %s, kernel_name = %s"
  80                         " owner = '%s', group = '%s', mode = '%#o'",
  81                         dev->attr.name, dev->kernel_name,
  82                         dev->attr.owner, dev->attr.group, dev->attr.mode);
  83                 break;
  84         case CALLOUT:
  85                 dbg_parse("CALLOUT name = '%s', program ='%s', bus = '%s', id = '%s'"
  86                         " owner = '%s', group = '%s', mode = '%#o'",
  87                         dev->attr.name, dev->exec_program, dev->bus, dev->id,
  88                         dev->attr.owner, dev->attr.group, dev->attr.mode);
  89                 break;
  90         default:
  91                 dbg_parse("Unknown type of device!");
  92         }
  93 }
  94
  95 #define copy_var(a, b, var)             \
  96         if (b->var)                     \
  97                 a->var = b->var;
  98
  99 #define copy_string(a, b, var)          \
 100         if (strlen(b->var))             \
 101                 strcpy(a->var, b->var);
 102
 103 static int add_dev(struct config_device *new_dev)
 104 {
 105         struct list_head *tmp;
 106         struct config_device *tmp_dev;
 107
 108         /* loop through the whole list of devices to see if we already have
 109          * this one... */
 110         list_for_each(tmp, &config_device_list) {
 111                 struct config_device *dev = list_entry(tmp, struct config_device, node);
 112                 if (strcmp(dev->attr.name, new_dev->attr.name) == 0) {
 113                         /* the same, copy the new info into this structure */
 114                         copy_var(dev, new_dev, type);
 115                         copy_var(dev, new_dev, attr.mode);
 116                         copy_string(dev, new_dev, bus);
 117                         copy_string(dev, new_dev, sysfs_file);
 118                         copy_string(dev, new_dev, sysfs_value);
 119                         copy_string(dev, new_dev, id);
 120                         copy_string(dev, new_dev, place);
 121                         copy_string(dev, new_dev, kernel_name);
 122                         copy_string(dev, new_dev, attr.owner);
 123                         copy_string(dev, new_dev, attr.group);
 124                         return 0;
 125                 }
 126         }
 127
 128         /* not found, lets create a new structure, and add it to the list */
 129         tmp_dev = malloc(sizeof(*tmp_dev));
 130         if (!tmp_dev)
 131                 return -ENOMEM;
 132         memcpy(tmp_dev, new_dev, sizeof(*tmp_dev));
 133         list_add(&tmp_dev->node, &config_device_list);
 134         //dump_dev(tmp_dev);
 135         return 0;
 136 }
 137
 138 static void dump_dev_list(void)
 139 {
 140         struct list_head *tmp;
 141
 142         list_for_each(tmp, &config_device_list) {
 143                 struct config_device *dev = list_entry(tmp, struct config_device, node);
 144                 dump_dev(dev);
 145         }
 146 }
 147
 148 static int get_value(const char *left, char **orig_string, char **ret_string)
 149 {
 150         char *temp;
 151         char *string = *orig_string;
 152
 153         /* eat any whitespace */
 154         while (isspace(*string))
 155                 ++string;
 156
 157         /* split based on '=' */
 158         temp = strsep(&string, "=");
 159         if (strcasecmp(temp, left) == 0) {
 160                 /* got it, now strip off the '"' */
 161                 while (isspace(*string))
 162                         ++string;
 163                 if (*string == '"')
 164                         ++string;
 165                 temp = strsep(&string, "\"");
 166                 *ret_string = temp;
 167                 *orig_string = string;
 168                 return 0;
 169         }
 170         return -ENODEV;
 171 }
 172
 173 static int get_pair(char **orig_string, char **left, char **right)
 174 {
 175         char *temp;
 176         char *string = *orig_string;
 177
 178         /* eat any whitespace */
 179         while (isspace(*string))
 180                 ++string;
 181
 182         /* split based on '=' */
 183         temp = strsep(&string, "=");
 184         *left = temp;
 185
 186         /* take the right side and strip off the '"' */
 187         while (isspace(*string))
 188                 ++string;
 189         if (*string == '"')
 190                 ++string;
 191         temp = strsep(&string, "\"");
 192         *right = temp;
 193         *orig_string = string;
 194
 195         return 0;
 196 }
 197
 198 static int namedev_init_config(void)
 199 {
 200         char filename[255];
 201         char line[255];
 202         char *temp;
 203         char *temp2;
 204         char *temp3;
 205         FILE *fd;
 206         int retval = 0;
 207         struct config_device dev;
 208
 209         strcpy(filename, UDEV_CONFIG_DIR NAMEDEV_CONFIG_FILE);
 210         dbg("opening %s to read as permissions config", filename);
 211         fd = fopen(filename, "r");
 212         if (fd == NULL) {
 213                 dbg("Can't open %s", filename);
 214                 return -ENODEV;
 215         }
 216
 217         /* loop through the whole file */
 218         while (1) {
 219                 /* get a line */
 220                 temp = fgets(line, sizeof(line), fd);
 221                 if (temp == NULL)
 222                         break;
 223
 224                 dbg_parse("read %s", temp);
 225
 226                 /* eat the whitespace at the beginning of the line */
 227                 while (isspace(*temp))
 228                         ++temp;
 229
 230                 /* no more line? */
 231                 if (*temp == 0x00)
 232                         continue;
 233
 234                 /* see if this is a comment */
 235                 if (*temp == COMMENT_CHARACTER)
 236                         continue;
 237
 238                 memset(&dev, 0x00, sizeof(struct config_device));
 239
 240                 /* parse the line */
 241                 temp2 = strsep(&temp, ",");
 242                 if (strcasecmp(temp2, TYPE_LABEL) == 0) {
 243                         /* label type */
 244                         dev.type = LABEL;
 245
 246                         /* BUS="bus" */
 247                         retval = get_value("BUS", &temp, &temp3);
 248                         if (retval)
 249                                 continue;
 250                         strcpy(dev.bus, temp3);
 251
 252                         /* file="value" */
 253                         temp2 = strsep(&temp, ",");
 254                         retval = get_pair(&temp, &temp2, &temp3);
 255                         if (retval)
 256                                 continue;
 257                         strcpy(dev.sysfs_file, temp2);
 258                         strcpy(dev.sysfs_value, temp3);
 259
 260                         /* NAME="new_name" */
 261                         temp2 = strsep(&temp, ",");
 262                         retval = get_value("NAME", &temp, &temp3);
 263                         if (retval)
 264                                 continue;
 265                         strcpy(dev.attr.name, temp3);
 266
 267                         dbg_parse("LABEL name = '%s', bus = '%s', "
 268                                 "sysfs_file = '%s', sysfs_value = '%s'",
 269                                 dev.attr.name, dev.bus, dev.sysfs_file,
 270                                 dev.sysfs_value);
 271                 }
 272
 273                 if (strcasecmp(temp2, TYPE_NUMBER) == 0) {
 274                         /* number type */
 275                         dev.type = NUMBER;
 276
 277                         /* BUS="bus" */
 278                         retval = get_value("BUS", &temp, &temp3);
 279                         if (retval)
 280                                 continue;
 281                         strcpy(dev.bus, temp3);
 282
 283                         /* ID="id" */
 284                         temp2 = strsep(&temp, ",");
 285                         retval = get_value("id", &temp, &temp3);
 286                         if (retval)
 287                                 continue;
 288                         strcpy(dev.id, temp3);
 289
 290                         /* NAME="new_name" */
 291                         temp2 = strsep(&temp, ",");
 292                         retval = get_value("NAME", &temp, &temp3);
 293                         if (retval)
 294                                 continue;
 295                         strcpy(dev.attr.name, temp3);
 296
 297                         dbg_parse("NUMBER name = '%s', bus = '%s', id = '%s'",
 298                                         dev.attr.name, dev.bus, dev.id);
 299                 }
 300
 301                 if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
 302                         /* number type */
 303                         dev.type = TOPOLOGY;
 304
 305                         /* BUS="bus" */
 306                         retval = get_value("BUS", &temp, &temp3);
 307                         if (retval)
 308                                 continue;
 309                         strcpy(dev.bus, temp3);
 310
 311                         /* PLACE="place" */
 312                         temp2 = strsep(&temp, ",");
 313                         retval = get_value("place", &temp, &temp3);
 314                         if (retval)
 315                                 continue;
 316                         strcpy(dev.place, temp3);
 317
 318                         /* NAME="new_name" */
 319                         temp2 = strsep(&temp, ",");
 320                         retval = get_value("NAME", &temp, &temp3);
 321                         if (retval)
 322                                 continue;
 323                         strcpy(dev.attr.name, temp3);
 324
 325                         dbg_parse("TOPOLOGY name = '%s', bus = '%s', place = '%s'",
 326                                         dev.attr.name, dev.bus, dev.place);
 327                 }
 328
 329                 if (strcasecmp(temp2, TYPE_REPLACE) == 0) {
 330                         /* number type */
 331                         dev.type = REPLACE;
 332
 333                         /* KERNEL="kernel_name" */
 334                         retval = get_value("KERNEL", &temp, &temp3);
 335                         if (retval)
 336                                 continue;
 337                         strcpy(dev.kernel_name, temp3);
 338
 339                         /* NAME="new_name" */
 340                         temp2 = strsep(&temp, ",");
 341                         retval = get_value("NAME", &temp, &temp3);
 342                         if (retval)
 343                                 continue;
 344                         strcpy(dev.attr.name, temp3);
 345                         dbg_parse("REPLACE name = %s, kernel_name = %s",
 346                                         dev.attr.name, dev.kernel_name);
 347                 }
 348                 if (strcasecmp(temp2, TYPE_CALLOUT) == 0) {
 349                         /* number type */
 350                         dev.type = CALLOUT;
 351
 352                         /* PROGRAM="executable" */
 353                         retval = get_value("PROGRAM", &temp, &temp3);
 354                         if (retval)
 355                                 continue;
 356                         strcpy(dev.exec_program, temp3);
 357
 358                         /* BUS="bus" */
 359                         temp2 = strsep(&temp, ",");
 360                         retval = get_value("BUS", &temp, &temp3);
 361                         if (retval)
 362                                 continue;
 363                         strcpy(dev.bus, temp3);
 364
 365                         /* ID="id" */
 366                         temp2 = strsep(&temp, ",");
 367                         retval = get_value("ID", &temp, &temp3);
 368                         if (retval)
 369                                 continue;
 370                         strcpy(dev.id, temp3);
 371
 372                         /* NAME="new_name" */
 373                         temp2 = strsep(&temp, ",");
 374                         retval = get_value("NAME", &temp, &temp3);
 375                         if (retval)
 376                                 continue;
 377                         strcpy(dev.attr.name, temp3);
 378                         dbg_parse("CALLOUT name = %s, program = %s",
 379                                         dev.attr.name, dev.exec_program);
 380                 }
 381
 382                 retval = add_dev(&dev);
 383                 if (retval) {
 384                         dbg("add_dev returned with error %d", retval);
 385                         goto exit;
 386                 }
 387         }
 388
 389 exit:
 390         fclose(fd);
 391         return retval;
 392 }
 393
 394
 395 static int namedev_init_permissions(void)
 396 {
 397         char filename[255];
 398         char line[255];
 399         char *temp;
 400         char *temp2;
 401         FILE *fd;
 402         int retval = 0;
 403         struct config_device dev;
 404
 405         strcpy(filename, UDEV_CONFIG_DIR NAMEDEV_CONFIG_PERMISSION_FILE);
 406         dbg("opening %s to read as permissions config", filename);
 407         fd = fopen(filename, "r");
 408         if (fd == NULL) {
 409                 dbg("Can't open %s", filename);
 410                 return -ENODEV;
 411         }
 412
 413         /* loop through the whole file */
 414         while (1) {
 415                 /* get a line */
 416                 temp = fgets(line, sizeof(line), fd);
 417                 if (temp == NULL)
 418                         break;
 419
 420                 dbg_parse("read %s", temp);
 421
 422                 /* eat the whitespace at the beginning of the line */
 423                 while (isspace(*temp))
 424                         ++temp;
 425
 426                 /* no more line? */
 427                 if (*temp == 0x00)
 428                         continue;
 429
 430                 /* see if this is a comment */
 431                 if (*temp == COMMENT_CHARACTER)
 432                         continue;
 433
 434                 memset(&dev, 0x00, sizeof(dev));
 435
 436                 /* parse the line */
 437                 temp2 = strsep(&temp, ":");
 438                 strncpy(dev.attr.name, temp2, sizeof(dev.attr.name));
 439
 440                 temp2 = strsep(&temp, ":");
 441                 strncpy(dev.attr.owner, temp2, sizeof(dev.attr.owner));
 442
 443                 temp2 = strsep(&temp, ":");
 444                 strncpy(dev.attr.group, temp2, sizeof(dev.attr.owner));
 445
 446                 dev.attr.mode = strtol(temp, NULL, 8);
 447
 448                 dbg_parse("name = %s, owner = %s, group = %s, mode = %#o",
 449                                 dev.attr.name, dev.attr.owner, dev.attr.group, dev.attr.mode);
 450                 retval = add_dev(&dev);
 451                 if (retval) {
 452                         dbg("add_dev returned with error %d", retval);
 453                         goto exit;
 454                 }
 455         }
 456
 457 exit:
 458         fclose(fd);
 459         return retval;
 460 }
 461
 462 static int get_default_mode(struct sysfs_class_device *class_dev)
 463 {
 464         /* just default everyone to rw for the world! */
 465         return 0666;
 466 }
 467
 468
 469 static int exec_callout(struct config_device *dev, char *value, int len)
 470 {
 471         int retval;
 472         int res;
 473         int status;
 474         int fds[2];
 475         pid_t pid;
 476         int value_set = 0;
 477         char buffer[256];
 478
 479         dbg("callout to %s\n", dev->exec_program);
 480         retval = pipe(fds);
 481         if (retval != 0) {
 482                 dbg("pipe failed");
 483                 return -1;
 484         }
 485         pid = fork();
 486         if (pid == -1) {
 487                 dbg("fork failed");
 488                 return -1;
 489         }
 490
 491         if (pid == 0) {
 492                 /*
 493                  * child
 494                  */
 495                 close(STDOUT_FILENO);
 496                 dup(fds[1]);    /* dup write side of pipe to STDOUT */
 497                 retval = execve(dev->exec_program, main_argv, main_envp);
 498                 if (retval != 0) {
 499                         dbg("child execve failed");
 500                         exit(1);
 501                 }
 502                 return -1; /* avoid compiler warning */
 503         } else {
 504                 /*
 505                  * Parent reads from fds[0].
 506                  */
 507                 close(fds[1]);
 508                 retval = 0;
 509                 while (1) {
 510                         res = read(fds[0], buffer, sizeof(buffer) - 1);
 511                         if (res <= 0)
 512                                 break;
 513                         buffer[res] = '\0';
 514                         if (res > len) {
 515                                 dbg("callout len %d too short\n", len);
 516                                 retval = -1;
 517                         }
 518                         if (value_set) {
 519                                 dbg("callout value already set");
 520                                 retval = -1;
 521                         } else {
 522                                 value_set = 1;
 523                                 strncpy(value, buffer, len);
 524                         }
 525                 }
 526                 close(fds[0]);
 527                 res = wait(&status);
 528                 if (res < 0) {
 529                         dbg("wait failed result %d", res);
 530                         retval = -1;
 531                 }
 532
 533                 if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
 534                         dbg("callout program status 0x%x", status);
 535                         retval = -1;
 536                 }
 537         }
 538         return retval;
 539 }
 540
 541 static int get_attr(struct sysfs_class_device *class_dev, struct device_attr *attr)
 542 {
 543         struct list_head *tmp;
 544         int retval = 0;
 545         int found;
 546
 547         attr->mode = -1;
 548         if (class_dev->sysdevice) {
 549                 dbg_parse("class_dev->sysdevice->directory->path = '%s'", class_dev->sysdevice->directory->path);
 550                 dbg_parse("class_dev->sysdevice->bus_id = '%s'", class_dev->sysdevice->bus_id);
 551         } else {
 552                 dbg_parse("class_dev->name = '%s'", class_dev->name);
 553         }
 554         list_for_each(tmp, &config_device_list) {
 555                 struct config_device *dev = list_entry(tmp, struct config_device, node);
 556                 switch (dev->type) {
 557                 case LABEL:
 558                         {
 559                         char *temp;
 560
 561                         dbg_parse("LABEL: match file '%s' with value '%s'",
 562                                         dev->sysfs_file, dev->sysfs_value);
 563                         /* try to find the attribute in the class device directory */
 564                         temp = sysfs_get_value_from_attributes(class_dev->directory->attributes, dev->sysfs_file);
 565                         if (temp)
 566                                 goto label_found;
 567
 568                         /* look in the class device device directory if present */
 569                         if (class_dev->sysdevice) {
 570                                 temp = sysfs_get_value_from_attributes(class_dev->sysdevice->directory->attributes, dev->sysfs_file);
 571                                 if (temp)
 572                                         goto label_found;
 573                         }
 574
 575                         /* bah, let's go backwards up a level to see if the device is there,
 576                          * as block partitions don't point to the physical device.  Need to fix that
 577                          * up in the kernel...
 578                          */
 579                         if (strstr(class_dev->directory->path, "block")) {
 580                                 dbg_parse("looking at block device...");
 581                                 if (isdigit(class_dev->directory->path[strlen(class_dev->directory->path)-1])) {
 582                                         char path[SYSFS_PATH_MAX];
 583                                         struct sysfs_class_device *class_dev_parent;
 584
 585                                         dbg_parse("really is a partition...");
 586                                         strcpy(path, class_dev->directory->path);
 587                                         temp = strrchr(path, '/');
 588                                         *temp = 0x00;
 589                                         dbg_parse("looking for a class device at '%s'", path);
 590                                         class_dev_parent = sysfs_open_class_device(path);
 591                                         if (class_dev_parent == NULL) {
 592                                                 dbg("sysfs_open_class_device at '%s' failed", path);
 593                                                 continue;
 594                                         }
 595                                         dbg_parse("class_dev_parent->name = %s", class_dev_parent->name);
 596
 597                                         /* try to find the attribute in the class device directory */
 598                                         temp = sysfs_get_value_from_attributes(class_dev_parent->directory->attributes, dev->sysfs_file);
 599                                         if (temp) {
 600                                                 //sysfs_close_class_device(class_dev_parent);
 601                                                 goto label_found;
 602                                         }
 603
 604                                         /* look in the class device device directory if present */
 605                                         if (class_dev_parent->sysdevice) {
 606                                                 temp = sysfs_get_value_from_attributes(class_dev_parent->sysdevice->directory->attributes, dev->sysfs_file);
 607                                                 if (temp) {
 608                                                         // sysfs_close_class_device(class_dev_parent);
 609                                                         goto label_found;
 610                                                 }
 611                                         }
 612
 613                                 }
 614                         }
 615                         continue;
 616
 617 label_found:
 618                         temp[strlen(temp)-1] = 0x00;
 619                         dbg_parse("file '%s' found with value '%s' compare with '%s'", dev->sysfs_file, temp, dev->sysfs_value);
 620                         if (strcmp(dev->sysfs_value, temp) != 0)
 621                                 continue;
 622
 623                         strcpy(attr->name, dev->attr.name);
 624                         if (isdigit(class_dev->directory->path[strlen(class_dev->directory->path)-1])) {
 625                                 temp[0] = class_dev->directory->path[strlen(class_dev->directory->path)-1];
 626                                 temp[1] = 0x00;
 627                                 strcat(attr->name, temp);
 628                         }
 629                         if (dev->attr.mode != 0) {
 630                                 attr->mode = dev->attr.mode;
 631                                 strcpy(attr->owner, dev->attr.owner);
 632                                 strcpy(attr->group, dev->attr.group);
 633                         }
 634                         dbg_parse("file '%s' with value '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 635                                 dev->sysfs_file, dev->sysfs_value, attr->name,
 636                                 dev->attr.owner, dev->attr.group, dev->attr.mode);
 637                         goto done;
 638                         break;
 639                         }
 640                 case NUMBER:
 641                         {
 642                         char path[SYSFS_PATH_MAX];
 643                         char *temp;
 644
 645                         found = 0;
 646                         if (!class_dev->sysdevice)
 647                                 continue;
 648                         strcpy(path, class_dev->sysdevice->directory->path);
 649                         temp = strrchr(path, '/');
 650                         dbg_parse("NUMBER path = '%s'", path);
 651                         dbg_parse("NUMBER temp = '%s' id = '%s'", temp, dev->id);
 652                         if (strstr(temp, dev->id) != NULL) {
 653                                 found = 1;
 654                         } else {
 655                                 *temp = 0x00;
 656                                 temp = strrchr(path, '/');
 657                                 dbg_parse("NUMBERY temp = '%s' id = '%s'", temp, dev->id);
 658                                 if (strstr(temp, dev->id) != NULL)
 659                                         found = 1;
 660                         }
 661                         if (!found)
 662                                 continue;
 663
 664                         strcpy(attr->name, dev->attr.name);
 665                         if (dev->attr.mode != 0) {
 666                                 attr->mode = dev->attr.mode;
 667                                 strcpy(attr->owner, dev->attr.owner);
 668                                 strcpy(attr->group, dev->attr.group);
 669                         }
 670                         dbg_parse("device id '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 671                                 dev->id, attr->name,
 672                                 dev->attr.owner, dev->attr.group, dev->attr.mode);
 673                         goto done;
 674                         break;
 675                         }
 676                 case TOPOLOGY:
 677                         {
 678                         char path[SYSFS_PATH_MAX];
 679                         char *temp;
 680
 681                         if (!class_dev->sysdevice)
 682                                 continue;
 683                         found = 0;
 684                         strcpy(path, class_dev->sysdevice->directory->path);
 685                         temp = strrchr(path, '/');
 686                         dbg_parse("TOPOLOGY path = '%s'", path);
 687                         dbg_parse("TOPOLOGY temp = '%s' place = '%s'", temp, dev->place);
 688                         if (strstr(temp, dev->place) != NULL) {
 689                                 found = 1;
 690                         } else {
 691                                 *temp = 0x00;
 692                                 temp = strrchr(path, '/');
 693                                 dbg_parse("TOPOLOGY temp = '%s' place = '%s'", temp, dev->place);
 694                                 if (strstr(temp, dev->place) != NULL)
 695                                         found = 1;
 696                         }
 697                         if (!found)
 698                                 continue;
 699
 700                         strcpy(attr->name, dev->attr.name);
 701                         if (dev->attr.mode != 0) {
 702                                 attr->mode = dev->attr.mode;
 703                                 strcpy(attr->owner, dev->attr.owner);
 704                                 strcpy(attr->group, dev->attr.group);
 705                         }
 706                         dbg_parse("device at '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 707                                 dev->place, attr->name,
 708                                 dev->attr.owner, dev->attr.group, dev->attr.mode);
 709                         goto done;
 710                         break;
 711                         }
 712                 case CALLOUT:
 713                         {
 714                         char value[ID_SIZE];
 715
 716                         if (exec_callout(dev, value, sizeof(value)))
 717                                 continue;
 718                         if (strncmp(value, dev->id, sizeof(value)) != 0)
 719                                 continue;
 720                         strcpy(attr->name, dev->attr.name);
 721                         if (dev->attr.mode != 0) {
 722                                 attr->mode = dev->attr.mode;
 723                                 strcpy(attr->owner, dev->attr.owner);
 724                                 strcpy(attr->group, dev->attr.group);
 725                         }
 726                         dbg_parse("device callout '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 727                                 dev->id, attr->name,
 728                                 dev->attr.owner, dev->attr.group, dev->attr.mode);
 729                         goto done;
 730                         break;
 731                         }
 732                 case REPLACE:
 733                         if (strcmp(dev->kernel_name, class_dev->name) != 0)
 734                                 continue;
 735                         strcpy(attr->name, dev->attr.name);
 736                         if (dev->attr.mode != 0) {
 737                                 attr->mode = dev->attr.mode;
 738                                 strcpy(attr->owner, dev->attr.owner);
 739                                 strcpy(attr->group, dev->attr.group);
 740                         }
 741                         dbg_parse("'%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 742                                 dev->kernel_name, attr->name,
 743                                 dev->attr.owner, dev->attr.group, dev->attr.mode);
 744                         goto done;
 745                         break;
 746                 case KERNEL_NAME:
 747                         break;
 748                 default:
 749                         dbg_parse("Unknown type of device '%d'", dev->type);
 750                         break;
 751                 }
 752         }
 753         strcpy(attr->name, class_dev->name);
 754
 755 done:
 756         if (attr->mode == -1) {
 757                 attr->mode = get_default_mode(class_dev);
 758                 attr->owner[0] = 0x00;
 759                 attr->group[0] = 0x00;
 760         }
 761         return retval;
 762 }
 763
 764 int namedev_name_device(struct sysfs_class_device *class_dev, struct device_attr *attr)
 765 {
 766         int retval;
 767
 768         retval = get_attr(class_dev, attr);
 769         if (retval)
 770                 dbg("get_attr failed");
 771
 772         return retval;
 773 }
 774
 775 int namedev_init(void)
 776 {
 777         int retval;
 778
 779         retval = namedev_init_config();
 780         if (retval)
 781                 return retval;
 782
 783         retval = namedev_init_permissions();
 784         if (retval)
 785                 return retval;
 786
 787         dump_dev_list();
 788         return retval;
 789 }
 790
 791