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->name,
  58                         dev->owner, dev->group, dev->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->name, dev->bus, dev->sysfs_file, dev->sysfs_value,
  64                         dev->owner, dev->group, dev->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->name, dev->bus, dev->id,
  70                         dev->owner, dev->group, dev->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->name, dev->bus, dev->place,
  76                         dev->owner, dev->group, dev->mode);
  77                 break;
  78         case REPLACE:
  79                 dbg_parse("REPLACE name = %s, kernel_name = %s"
  80                         " owner = '%s', group = '%s', mode = '%#o'",
  81                         dev->name, dev->kernel_name,
  82                         dev->owner, dev->group, dev->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->name, dev->exec_program, dev->bus, dev->id,
  88                         dev->owner, dev->group, dev->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->name, new_dev->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, 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, owner);
 123                         copy_string(dev, new_dev, 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 line[255];
 201         char *temp;
 202         char *temp2;
 203         char *temp3;
 204         FILE *fd;
 205         int retval = 0;
 206         struct config_device dev;
 207
 208         dbg("opening %s to read as config", udev_config_filename);
 209         fd = fopen(udev_config_filename, "r");
 210         if (fd == NULL) {
 211                 dbg("Can't open %s", udev_config_filename);
 212                 return -ENODEV;
 213         }
 214
 215         /* loop through the whole file */
 216         while (1) {
 217                 /* get a line */
 218                 temp = fgets(line, sizeof(line), fd);
 219                 if (temp == NULL)
 220                         break;
 221
 222                 dbg_parse("read %s", temp);
 223
 224                 /* eat the whitespace at the beginning of the line */
 225                 while (isspace(*temp))
 226                         ++temp;
 227
 228                 /* no more line? */
 229                 if (*temp == 0x00)
 230                         continue;
 231
 232                 /* see if this is a comment */
 233                 if (*temp == COMMENT_CHARACTER)
 234                         continue;
 235
 236                 memset(&dev, 0x00, sizeof(struct config_device));
 237
 238                 /* parse the line */
 239                 temp2 = strsep(&temp, ",");
 240                 if (strcasecmp(temp2, TYPE_LABEL) == 0) {
 241                         /* label type */
 242                         dev.type = LABEL;
 243
 244                         /* BUS="bus" */
 245                         retval = get_value("BUS", &temp, &temp3);
 246                         if (retval)
 247                                 continue;
 248                         strcpy(dev.bus, temp3);
 249
 250                         /* file="value" */
 251                         temp2 = strsep(&temp, ",");
 252                         retval = get_pair(&temp, &temp2, &temp3);
 253                         if (retval)
 254                                 continue;
 255                         strcpy(dev.sysfs_file, temp2);
 256                         strcpy(dev.sysfs_value, temp3);
 257
 258                         /* NAME="new_name" */
 259                         temp2 = strsep(&temp, ",");
 260                         retval = get_value("NAME", &temp, &temp3);
 261                         if (retval)
 262                                 continue;
 263                         strcpy(dev.name, temp3);
 264
 265                         dbg_parse("LABEL name = '%s', bus = '%s', "
 266                                 "sysfs_file = '%s', sysfs_value = '%s'",
 267                                 dev.name, dev.bus, dev.sysfs_file,
 268                                 dev.sysfs_value);
 269                 }
 270
 271                 if (strcasecmp(temp2, TYPE_NUMBER) == 0) {
 272                         /* number type */
 273                         dev.type = NUMBER;
 274
 275                         /* BUS="bus" */
 276                         retval = get_value("BUS", &temp, &temp3);
 277                         if (retval)
 278                                 continue;
 279                         strcpy(dev.bus, temp3);
 280
 281                         /* ID="id" */
 282                         temp2 = strsep(&temp, ",");
 283                         retval = get_value("id", &temp, &temp3);
 284                         if (retval)
 285                                 continue;
 286                         strcpy(dev.id, temp3);
 287
 288                         /* NAME="new_name" */
 289                         temp2 = strsep(&temp, ",");
 290                         retval = get_value("NAME", &temp, &temp3);
 291                         if (retval)
 292                                 continue;
 293                         strcpy(dev.name, temp3);
 294
 295                         dbg_parse("NUMBER name = '%s', bus = '%s', id = '%s'",
 296                                         dev.name, dev.bus, dev.id);
 297                 }
 298
 299                 if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
 300                         /* number type */
 301                         dev.type = TOPOLOGY;
 302
 303                         /* BUS="bus" */
 304                         retval = get_value("BUS", &temp, &temp3);
 305                         if (retval)
 306                                 continue;
 307                         strcpy(dev.bus, temp3);
 308
 309                         /* PLACE="place" */
 310                         temp2 = strsep(&temp, ",");
 311                         retval = get_value("place", &temp, &temp3);
 312                         if (retval)
 313                                 continue;
 314                         strcpy(dev.place, temp3);
 315
 316                         /* NAME="new_name" */
 317                         temp2 = strsep(&temp, ",");
 318                         retval = get_value("NAME", &temp, &temp3);
 319                         if (retval)
 320                                 continue;
 321                         strcpy(dev.name, temp3);
 322
 323                         dbg_parse("TOPOLOGY name = '%s', bus = '%s', place = '%s'",
 324                                         dev.name, dev.bus, dev.place);
 325                 }
 326
 327                 if (strcasecmp(temp2, TYPE_REPLACE) == 0) {
 328                         /* number type */
 329                         dev.type = REPLACE;
 330
 331                         /* KERNEL="kernel_name" */
 332                         retval = get_value("KERNEL", &temp, &temp3);
 333                         if (retval)
 334                                 continue;
 335                         strcpy(dev.kernel_name, temp3);
 336
 337                         /* NAME="new_name" */
 338                         temp2 = strsep(&temp, ",");
 339                         retval = get_value("NAME", &temp, &temp3);
 340                         if (retval)
 341                                 continue;
 342                         strcpy(dev.name, temp3);
 343                         dbg_parse("REPLACE name = %s, kernel_name = %s",
 344                                         dev.name, dev.kernel_name);
 345                 }
 346                 if (strcasecmp(temp2, TYPE_CALLOUT) == 0) {
 347                         /* number type */
 348                         dev.type = CALLOUT;
 349
 350                         /* PROGRAM="executable" */
 351                         retval = get_value("PROGRAM", &temp, &temp3);
 352                         if (retval)
 353                                 continue;
 354                         strcpy(dev.exec_program, temp3);
 355
 356                         /* BUS="bus" */
 357                         temp2 = strsep(&temp, ",");
 358                         retval = get_value("BUS", &temp, &temp3);
 359                         if (retval)
 360                                 continue;
 361                         strcpy(dev.bus, temp3);
 362
 363                         /* ID="id" */
 364                         temp2 = strsep(&temp, ",");
 365                         retval = get_value("ID", &temp, &temp3);
 366                         if (retval)
 367                                 continue;
 368                         strcpy(dev.id, temp3);
 369
 370                         /* NAME="new_name" */
 371                         temp2 = strsep(&temp, ",");
 372                         retval = get_value("NAME", &temp, &temp3);
 373                         if (retval)
 374                                 continue;
 375                         strcpy(dev.name, temp3);
 376                         dbg_parse("CALLOUT name = %s, program = %s",
 377                                         dev.name, dev.exec_program);
 378                 }
 379
 380                 retval = add_dev(&dev);
 381                 if (retval) {
 382                         dbg("add_dev returned with error %d", retval);
 383                         goto exit;
 384                 }
 385         }
 386
 387 exit:
 388         fclose(fd);
 389         return retval;
 390 }
 391
 392
 393 static int namedev_init_permissions(void)
 394 {
 395         char line[255];
 396         char *temp;
 397         char *temp2;
 398         FILE *fd;
 399         int retval = 0;
 400         struct config_device dev;
 401
 402         dbg("opening %s to read as permissions config", udev_config_permission_filename);
 403         fd = fopen(udev_config_permission_filename, "r");
 404         if (fd == NULL) {
 405                 dbg("Can't open %s", udev_config_permission_filename);
 406                 return -ENODEV;
 407         }
 408
 409         /* loop through the whole file */
 410         while (1) {
 411                 /* get a line */
 412                 temp = fgets(line, sizeof(line), fd);
 413                 if (temp == NULL)
 414                         break;
 415
 416                 dbg_parse("read %s", temp);
 417
 418                 /* eat the whitespace at the beginning of the line */
 419                 while (isspace(*temp))
 420                         ++temp;
 421
 422                 /* no more line? */
 423                 if (*temp == 0x00)
 424                         continue;
 425
 426                 /* see if this is a comment */
 427                 if (*temp == COMMENT_CHARACTER)
 428                         continue;
 429
 430                 memset(&dev, 0x00, sizeof(dev));
 431
 432                 /* parse the line */
 433                 temp2 = strsep(&temp, ":");
 434                 strncpy(dev.name, temp2, sizeof(dev.name));
 435
 436                 temp2 = strsep(&temp, ":");
 437                 strncpy(dev.owner, temp2, sizeof(dev.owner));
 438
 439                 temp2 = strsep(&temp, ":");
 440                 strncpy(dev.group, temp2, sizeof(dev.owner));
 441
 442                 dev.mode = strtol(temp, NULL, 8);
 443
 444                 dbg_parse("name = %s, owner = %s, group = %s, mode = %#o",
 445                                 dev.name, dev.owner, dev.group,
 446                                 dev.mode);
 447                 retval = add_dev(&dev);
 448                 if (retval) {
 449                         dbg("add_dev returned with error %d", retval);
 450                         goto exit;
 451                 }
 452         }
 453
 454 exit:
 455         fclose(fd);
 456         return retval;
 457 }
 458
 459 static mode_t get_default_mode(struct sysfs_class_device *class_dev)
 460 {
 461         /* just default everyone to rw for the world! */
 462         return 0666;
 463 }
 464
 465
 466 static int exec_callout(struct config_device *dev, char *value, int len)
 467 {
 468         int retval;
 469         int res;
 470         int status;
 471         int fds[2];
 472         pid_t pid;
 473         int value_set = 0;
 474         char buffer[256];
 475
 476         dbg("callout to %s\n", dev->exec_program);
 477         retval = pipe(fds);
 478         if (retval != 0) {
 479                 dbg("pipe failed");
 480                 return -1;
 481         }
 482         pid = fork();
 483         if (pid == -1) {
 484                 dbg("fork failed");
 485                 return -1;
 486         }
 487
 488         if (pid == 0) {
 489                 /*
 490                  * child
 491                  */
 492                 close(STDOUT_FILENO);
 493                 dup(fds[1]);    /* dup write side of pipe to STDOUT */
 494                 retval = execve(dev->exec_program, main_argv, main_envp);
 495                 if (retval != 0) {
 496                         dbg("child execve failed");
 497                         exit(1);
 498                 }
 499                 return -1; /* avoid compiler warning */
 500         } else {
 501                 /*
 502                  * Parent reads from fds[0].
 503                  */
 504                 close(fds[1]);
 505                 retval = 0;
 506                 while (1) {
 507                         res = read(fds[0], buffer, sizeof(buffer) - 1);
 508                         if (res <= 0)
 509                                 break;
 510                         buffer[res] = '\0';
 511                         if (res > len) {
 512                                 dbg("callout len %d too short\n", len);
 513                                 retval = -1;
 514                         }
 515                         if (value_set) {
 516                                 dbg("callout value already set");
 517                                 retval = -1;
 518                         } else {
 519                                 value_set = 1;
 520                                 strncpy(value, buffer, len);
 521                         }
 522                 }
 523                 close(fds[0]);
 524                 res = wait(&status);
 525                 if (res < 0) {
 526                         dbg("wait failed result %d", res);
 527                         retval = -1;
 528                 }
 529
 530 #ifndef __KLIBC__
 531                 if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) {
 532                         dbg("callout program status 0x%x", status);
 533                         retval = -1;
 534                 }
 535 #endif
 536         }
 537         return retval;
 538 }
 539
 540 static int do_callout(struct sysfs_class_device *class_dev, struct udevice *udev)
 541 {
 542         struct config_device *dev;
 543         struct list_head *tmp;
 544         char value[ID_SIZE];
 545
 546         list_for_each(tmp, &config_device_list) {
 547                 dev = list_entry(tmp, struct config_device, node);
 548                 if (dev->type != CALLOUT)
 549                         continue;
 550
 551                 if (exec_callout(dev, value, sizeof(value)))
 552                         continue;
 553                 if (strncmp(value, dev->id, sizeof(value)) != 0)
 554                         continue;
 555                 strcpy(udev->name, dev->name);
 556                 if (dev->mode != 0) {
 557                         udev->mode = dev->mode;
 558                         strcpy(udev->owner, dev->owner);
 559                         strcpy(udev->group, dev->group);
 560                 }
 561                 dbg_parse("device callout '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 562                         dev->id, udev->name,
 563                         dev->owner, dev->group, dev->mode);
 564                 return 0;
 565         }
 566         return -ENODEV;
 567 }
 568
 569 static int do_label(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 570 {
 571         struct sysfs_attribute *tmpattr = NULL;
 572         struct config_device *dev;
 573         struct list_head *tmp;
 574         char *temp = NULL;
 575
 576         list_for_each(tmp, &config_device_list) {
 577                 dev = list_entry(tmp, struct config_device, node);
 578                 if (dev->type != LABEL)
 579                         continue;
 580
 581                 dbg_parse("LABEL: match file '%s' with value '%s'",
 582                                 dev->sysfs_file, dev->sysfs_value);
 583                 /* try to find the attribute in the class device directory */
 584                 tmpattr = sysfs_get_classdev_attr(class_dev, dev->sysfs_file);
 585                 if (tmpattr)
 586                         goto label_found;
 587
 588                 /* look in the class device directory if present */
 589                 if (sysfs_device) {
 590                         tmpattr = sysfs_get_device_attr(sysfs_device, dev->sysfs_file);
 591                         if (tmpattr)
 592                                 goto label_found;
 593                 }
 594
 595                 continue;
 596
 597 label_found:
 598                 tmpattr->value[strlen(tmpattr->value)-1] = 0x00;
 599                 dbg_parse("file '%s' found with value '%s' compare with '%s'", dev->sysfs_file, tmpattr->value, dev->sysfs_value);
 600                 if (strcmp(dev->sysfs_value, tmpattr->value) != 0)
 601                         continue;
 602
 603                 strcpy(udev->name, dev->name);
 604                 if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
 605                         temp = &class_dev->path[strlen(class_dev->path)-1];
 606                         strcat(udev->name, temp);
 607                 }
 608                 if (dev->mode != 0) {
 609                         udev->mode = dev->mode;
 610                         strcpy(udev->owner, dev->owner);
 611                         strcpy(udev->group, dev->group);
 612                 }
 613                 dbg_parse("file '%s' with value '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 614                         dev->sysfs_file, dev->sysfs_value, udev->name,
 615                         dev->owner, dev->group, dev->mode);
 616
 617                 return 0;
 618         }
 619         return -ENODEV;
 620 }
 621
 622 static int do_number(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 623 {
 624         struct config_device *dev;
 625         struct list_head *tmp;
 626         char path[SYSFS_PATH_MAX];
 627         int found;
 628         char *temp = NULL;
 629
 630         /* we have to have a sysfs device for NUMBER to work */
 631         if (!sysfs_device)
 632                 return -ENODEV;
 633
 634         list_for_each(tmp, &config_device_list) {
 635                 dev = list_entry(tmp, struct config_device, node);
 636                 if (dev->type != NUMBER)
 637                         continue;
 638
 639                 found = 0;
 640                 strcpy(path, sysfs_device->path);
 641                 temp = strrchr(path, '/');
 642                 dbg_parse("NUMBER path = '%s'", path);
 643                 dbg_parse("NUMBER temp = '%s' id = '%s'", temp, dev->id);
 644                 if (strstr(temp, dev->id) != NULL) {
 645                         found = 1;
 646                 } else {
 647                         *temp = 0x00;
 648                         temp = strrchr(path, '/');
 649                         dbg_parse("NUMBER temp = '%s' id = '%s'", temp, dev->id);
 650                         if (strstr(temp, dev->id) != NULL)
 651                                 found = 1;
 652                 }
 653                 if (!found)
 654                         continue;
 655                 strcpy(udev->name, dev->name);
 656                 if (dev->mode != 0) {
 657                         udev->mode = dev->mode;
 658                         strcpy(udev->owner, dev->owner);
 659                         strcpy(udev->group, dev->group);
 660                 }
 661                 dbg_parse("device id '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 662                         dev->id, udev->name,
 663                         dev->owner, dev->group, dev->mode);
 664                 return 0;
 665         }
 666         return -ENODEV;
 667 }
 668
 669
 670 static int do_topology(struct sysfs_class_device *class_dev, struct udevice *udev, struct sysfs_device *sysfs_device)
 671 {
 672         struct config_device *dev;
 673         struct list_head *tmp;
 674         char path[SYSFS_PATH_MAX];
 675         int found;
 676         char *temp = NULL;
 677
 678         /* we have to have a sysfs device for TOPOLOGY to work */
 679         if (!sysfs_device)
 680                 return -ENODEV;
 681
 682         list_for_each(tmp, &config_device_list) {
 683                 dev = list_entry(tmp, struct config_device, node);
 684                 if (dev->type != TOPOLOGY)
 685                         continue;
 686
 687                 found = 0;
 688                 strcpy(path, sysfs_device->path);
 689                 temp = strrchr(path, '/');
 690                 dbg_parse("TOPOLOGY path = '%s'", path);
 691                 dbg_parse("TOPOLOGY temp = '%s' place = '%s'", temp, dev->place);
 692                 if (strstr(temp, dev->place) != NULL) {
 693                         found = 1;
 694                 } else {
 695                         *temp = 0x00;
 696                         temp = strrchr(path, '/');
 697                         dbg_parse("TOPOLOGY temp = '%s' place = '%s'", temp, dev->place);
 698                         if (strstr(temp, dev->place) != NULL)
 699                                 found = 1;
 700                 }
 701                 if (!found)
 702                         continue;
 703
 704                 strcpy(udev->name, dev->name);
 705                 if (dev->mode != 0) {
 706                         udev->mode = dev->mode;
 707                         strcpy(udev->owner, dev->owner);
 708                         strcpy(udev->group, dev->group);
 709                 }
 710                 dbg_parse("device at '%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 711                         dev->place, udev->name,
 712                         dev->owner, dev->group, dev->mode);
 713
 714                 return 0;
 715         }
 716         return -ENODEV;
 717 }
 718
 719 static int do_replace(struct sysfs_class_device *class_dev, struct udevice *udev)
 720 {
 721         struct config_device *dev;
 722         struct list_head *tmp;
 723
 724         list_for_each(tmp, &config_device_list) {
 725                 dev = list_entry(tmp, struct config_device, node);
 726                 if (dev->type != REPLACE)
 727                         continue;
 728
 729                 dbg_parse("REPLACE: replace name '%s' with '%s'",
 730                           dev->kernel_name, dev->name);
 731                 if (strcmp(dev->kernel_name, class_dev->name) != 0)
 732                         continue;
 733
 734                 strcpy(udev->name, dev->name);
 735                 if (dev->mode != 0) {
 736                         udev->mode = dev->mode;
 737                         strcpy(udev->owner, dev->owner);
 738                         strcpy(udev->group, dev->group);
 739                 }
 740                 dbg_parse("'%s' becomes '%s' - owner = %s, group = %s, mode = %#o",
 741                         dev->kernel_name, udev->name,
 742                         dev->owner, dev->group, dev->mode);
 743
 744                 return 0;
 745         }
 746         return -ENODEV;
 747 }
 748
 749 static int get_attr(struct sysfs_class_device *class_dev, struct udevice *udev)
 750 {
 751         struct sysfs_device *sysfs_device = NULL;
 752         struct sysfs_class_device *class_dev_parent = NULL;
 753         int retval = 0;
 754         char *temp = NULL;
 755
 756         udev->mode = 0;
 757
 758         /* find the sysfs_device for this class device */
 759         /* Wouldn't it really be nice if libsysfs could do this for us? */
 760         if (class_dev->sysdevice) {
 761                 sysfs_device = class_dev->sysdevice;
 762         } else {
 763                 /* bah, let's go backwards up a level to see if the device is there,
 764                  * as block partitions don't point to the physical device.  Need to fix that
 765                  * up in the kernel...
 766                  */
 767                 if (strstr(class_dev->path, "block")) {
 768                         dbg_parse("looking at block device...");
 769                         if (isdigit(class_dev->path[strlen(class_dev->path)-1])) {
 770                                 char path[SYSFS_PATH_MAX];
 771
 772                                 dbg_parse("really is a partition...");
 773                                 strcpy(path, class_dev->path);
 774                                 temp = strrchr(path, '/');
 775                                 *temp = 0x00;
 776                                 dbg_parse("looking for a class device at '%s'", path);
 777                                 class_dev_parent = sysfs_open_class_device(path);
 778                                 if (class_dev_parent == NULL) {
 779                                         dbg("sysfs_open_class_device at '%s' failed", path);
 780                                 } else {
 781                                         dbg_parse("class_dev_parent->name = %s", class_dev_parent->name);
 782                                         if (class_dev_parent->sysdevice)
 783                                                 sysfs_device = class_dev_parent->sysdevice;
 784                                 }
 785                         }
 786                 }
 787         }
 788
 789         if (sysfs_device) {
 790                 dbg_parse("sysfs_device->path = '%s'", sysfs_device->path);
 791                 dbg_parse("sysfs_device->bus_id = '%s'", sysfs_device->bus_id);
 792         } else {
 793                 dbg_parse("class_dev->name = '%s'", class_dev->name);
 794         }
 795
 796         /* rules are looked at in priority order */
 797         retval = do_callout(class_dev, udev);
 798         if (retval == 0)
 799                 goto done;
 800
 801         retval = do_label(class_dev, udev, sysfs_device);
 802         if (retval == 0)
 803                 goto done;
 804
 805         retval = do_number(class_dev, udev, sysfs_device);
 806         if (retval == 0)
 807                 goto done;
 808
 809         retval = do_topology(class_dev, udev, sysfs_device);
 810         if (retval == 0)
 811                 goto done;
 812
 813         retval = do_replace(class_dev, udev);
 814         if (retval == 0)
 815                 goto done;
 816
 817         strcpy(udev->name, class_dev->name);
 818
 819 done:
 820         /* mode was never set above */
 821         if (!udev->mode) {
 822                 udev->mode = get_default_mode(class_dev);
 823                 udev->owner[0] = 0x00;
 824                 udev->group[0] = 0x00;
 825         }
 826
 827         if (class_dev_parent)
 828                 sysfs_close_class_device(class_dev_parent);
 829
 830         return 0;
 831 }
 832
 833 int namedev_name_device(struct sysfs_class_device *class_dev, struct udevice *dev)
 834 {
 835         int retval;
 836
 837         retval = get_attr(class_dev, dev);
 838         if (retval)
 839                 dbg("get_attr failed");
 840
 841         return retval;
 842 }
 843
 844 int namedev_init(void)
 845 {
 846         int retval;
 847
 848         retval = namedev_init_config();
 849         if (retval)
 850                 return retval;
 851
 852         retval = namedev_init_permissions();
 853         if (retval)
 854                 return retval;
 855
 856         dump_dev_list();
 857         return retval;
 858 }
 859
 860