udev/lib/libudev-device.c

   1 /*
   2  * libudev - interface to udev device information
   3  *
   4  * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <stddef.h>
  23 #include <unistd.h>
  24 #include <errno.h>
  25 #include <string.h>
  26 #include <dirent.h>
  27 #include <fcntl.h>
  28 #include <sys/stat.h>
  29
  30 #include "libudev.h"
  31 #include "libudev-private.h"
  32
  33 struct udev_device {
  34         int refcount;
  35         struct udev *udev;
  36         struct udev_device *parent_device;
  37         char *syspath;
  38         const char *devpath;
  39         const char *sysname;
  40         char *devname;
  41         char *subsystem;
  42         struct list_head link_list;
  43         struct list_head env_list;
  44         char *action;
  45         char *driver;
  46         char *devpath_old;
  47         char *physdevpath;
  48         int timeout;
  49         dev_t devnum;
  50         unsigned long long int seqnum;
  51         int num_fake_partitions;
  52         int devlink_priority;
  53         int ignore_remove;
  54         struct list_head attr_list;
  55 };
  56
  57 static size_t syspath_to_db_path(struct udev_device *udev_device, char *filename, size_t len)
  58 {
  59         size_t start;
  60
  61         /* translate to location of db file */
  62         util_strlcpy(filename, udev_get_dev_path(udev_device->udev), len);
  63         start = util_strlcat(filename, "/.udev/db/", len);
  64         util_strlcat(filename, udev_device->devpath, len);
  65         return util_path_encode(&filename[start], len - start);
  66 }
  67
  68 static int device_read_db(struct udev_device *udev_device)
  69 {
  70         struct stat stats;
  71         char filename[UTIL_PATH_SIZE];
  72         char line[UTIL_LINE_SIZE];
  73         FILE *f;
  74         int rc = 0;
  75
  76         syspath_to_db_path(udev_device, filename, sizeof(filename));
  77
  78         if (lstat(filename, &stats) != 0) {
  79                 info(udev_device->udev, "no db file to read %s: %s\n", filename, strerror(errno));
  80                 return -1;
  81         }
  82         if ((stats.st_mode & S_IFMT) == S_IFLNK) {
  83                 char target[UTIL_PATH_SIZE];
  84                 int target_len;
  85
  86                 info(udev_device->udev, "found a symlink as db file\n");
  87                 target_len = readlink(filename, target, sizeof(target));
  88                 if (target_len > 0)
  89                         target[target_len] = '\0';
  90                 else {
  91                         info(udev_device->udev, "error reading db link %s: %s\n", filename, strerror(errno));
  92                         return -1;
  93                 }
  94                 dbg(udev_device->udev, "db link points to '%s'\n", target);
  95                 if (asprintf(&udev_device->devname, "%s/%s", udev_get_dev_path(udev_device->udev), target) < 0)
  96                         return -ENOMEM;
  97                 return 0;
  98         }
  99
 100         f = fopen(filename, "r");
 101         if (f == NULL) {
 102                 info(udev_device->udev, "error reading db file %s: %s\n", filename, strerror(errno));
 103                 return -1;
 104         }
 105         while (fgets(line, sizeof(line), f)) {
 106                 ssize_t len;
 107                 const char *val;
 108                 unsigned int maj, min;
 109
 110                 len = strlen(line);
 111                 if (len < 4)
 112                         break;
 113                 line[len-1] = '\0';
 114                 val = &line[2];
 115
 116                 switch(line[0]) {
 117                 case 'N':
 118                         asprintf(&udev_device->devname, "%s/%s", udev_get_dev_path(udev_device->udev), val);
 119                         break;
 120                 case 'M':
 121                         sscanf(val, "%u:%u", &maj, &min);
 122                         device_set_devnum(udev_device, makedev(maj, min));
 123                         break;
 124                 case 'S':
 125                         util_strlcpy(filename, udev_get_dev_path(udev_device->udev), sizeof(filename));
 126                         util_strlcat(filename, "/", sizeof(filename));
 127                         util_strlcat(filename, val, sizeof(filename));
 128                         device_add_devlink(udev_device, filename);
 129                         break;
 130                 case 'L':
 131                         device_set_devlink_priority(udev_device, atoi(val));
 132                         break;
 133                 case 'T':
 134                         device_set_timeout(udev_device,  atoi(val));
 135                         break;
 136                 case 'A':
 137                         device_set_num_fake_partitions(udev_device, atoi(val));
 138                         break;
 139                 case 'R':
 140                         device_set_ignore_remove(udev_device, atoi(val));
 141                         break;
 142                 case 'E':
 143                         device_add_property_from_string(udev_device, val);
 144                         break;
 145                 }
 146         }
 147         fclose(f);
 148
 149         return rc;
 150 }
 151
 152 struct udev_device *device_init(struct udev *udev)
 153 {
 154         struct udev_device *udev_device;
 155
 156         if (udev == NULL)
 157                 return NULL;
 158
 159         udev_device = malloc(sizeof(struct udev_device));
 160         if (udev_device == NULL)
 161                 return NULL;
 162         memset(udev_device, 0x00, sizeof(struct udev_device));
 163         udev_device->refcount = 1;
 164         udev_device->udev = udev;
 165         INIT_LIST_HEAD(&udev_device->link_list);
 166         INIT_LIST_HEAD(&udev_device->env_list);
 167         INIT_LIST_HEAD(&udev_device->attr_list);
 168         info(udev_device->udev, "udev_device: %p created\n", udev_device);
 169         return udev_device;
 170 }
 171
 172 /**
 173  * udev_device_new_from_syspath:
 174  * @udev: udev library context
 175  * @syspath: sys device path including sys directory
 176  *
 177  * Create new udev device, and fill in information from the sys
 178  * device and the udev database entry. The sypath is the absolute
 179  * path to the device, including the sys mount point.
 180  *
 181  * The initial refcount is 1, and needs to be decremented to
 182  * release the ressources of the udev device.
 183  *
 184  * Returns: a new udev device, or #NULL, if it does not exist
 185  **/
 186 struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath)
 187 {
 188         char path[UTIL_PATH_SIZE];
 189         struct stat statbuf;
 190         struct udev_device *udev_device;
 191
 192         if (udev == NULL)
 193                 return NULL;
 194         if (syspath == NULL)
 195                 return NULL;
 196
 197         util_strlcpy(path, syspath, sizeof(path));
 198         util_strlcat(path, "/uevent", sizeof(path));
 199         if (stat(path, &statbuf) != 0) {
 200                 info(udev, "not a device :%s\n", syspath);
 201                 return NULL;
 202         }
 203
 204         udev_device = device_init(udev);
 205         if (udev_device == NULL)
 206                 return NULL;
 207
 208         /* resolve possible symlink to real path */
 209         util_strlcpy(path, syspath, sizeof(path));
 210         util_resolve_sys_link(udev, path, sizeof(path));
 211         device_set_syspath(udev_device, path);
 212         info(udev, "device %p has devpath '%s'\n", udev_device, udev_device_get_devpath(udev_device));
 213
 214         if (device_read_db(udev_device) >= 0)
 215                 info(udev, "device %p filled with udev database data\n", udev_device);
 216         return udev_device;
 217 }
 218
 219 static struct udev_device *device_new_from_parent(struct udev_device *udev_device)
 220 {
 221         struct udev_device *udev_device_parent = NULL;
 222         char path[UTIL_PATH_SIZE];
 223         char *pos;
 224
 225         if (udev_device == NULL)
 226                 return NULL;
 227
 228         util_strlcpy(path, udev_device->syspath, sizeof(path));
 229         while (1) {
 230                 pos = strrchr(path, '/');
 231                 if (pos == path || pos == NULL)
 232                         break;
 233                 pos[0] = '\0';
 234                 udev_device_parent = udev_device_new_from_syspath(udev_device->udev, path);
 235                 if (udev_device_parent != NULL)
 236                         return udev_device_parent;
 237         }
 238
 239         /* follow "device" link in deprecated sys /sys/class/ layout */
 240         if (strncmp(udev_device->devpath, "/class/", 7) == 0) {
 241                 util_strlcpy(path, udev_device->syspath, sizeof(path));
 242                 util_strlcat(path, "/device", sizeof(path));
 243                 if (util_resolve_sys_link(udev_device->udev, path, sizeof(path)) == 0) {
 244                         udev_device_parent = udev_device_new_from_syspath(udev_device->udev, path);
 245                         if (udev_device_parent != NULL)
 246                                 return udev_device_parent;
 247                 }
 248         }
 249         return NULL;
 250 }
 251
 252 struct udev_device *udev_device_get_parent(struct udev_device *udev_device)
 253 {
 254         if (udev_device->parent_device != NULL) {
 255                 info(udev_device->udev, "returning existing parent %p\n", udev_device->parent_device);
 256                 return udev_device->parent_device;
 257         }
 258         udev_device->parent_device = device_new_from_parent(udev_device);
 259         return udev_device->parent_device;
 260 }
 261
 262 /**
 263  * udev_device_get_udev:
 264  * @udev_device: udev device
 265  *
 266  * Retrieve the udev library context the device was created with.
 267  *
 268  * Returns: the udev library context
 269  **/
 270 struct udev *udev_device_get_udev(struct udev_device *udev_device)
 271 {
 272         if (udev_device == NULL)
 273                 return NULL;
 274         return udev_device->udev;
 275 }
 276
 277 /**
 278  * udev_device_ref:
 279  * @udev_device: udev device
 280  *
 281  * Take a reference of a udev device.
 282  *
 283  * Returns: the passed udev device
 284  **/
 285 struct udev_device *udev_device_ref(struct udev_device *udev_device)
 286 {
 287         if (udev_device == NULL)
 288                 return NULL;
 289         udev_device->refcount++;
 290         return udev_device;
 291 }
 292
 293 /**
 294  * udev_device_unref:
 295  * @udev_device: udev device
 296  *
 297  * Drop a reference of a udev device. If the refcount reaches zero,
 298  * the ressources of the device will be released.
 299  *
 300  **/
 301 void udev_device_unref(struct udev_device *udev_device)
 302 {
 303         if (udev_device == NULL)
 304                 return;
 305         udev_device->refcount--;
 306         if (udev_device->refcount > 0)
 307                 return;
 308         if (udev_device->parent_device != NULL)
 309                 udev_device_unref(udev_device->parent_device);
 310         free(udev_device->syspath);
 311         free(udev_device->devname);
 312         free(udev_device->subsystem);
 313         util_name_list_cleanup(udev_device->udev, &udev_device->link_list);
 314         util_name_list_cleanup(udev_device->udev, &udev_device->env_list);
 315         free(udev_device->action);
 316         free(udev_device->driver);
 317         free(udev_device->devpath_old);
 318         free(udev_device->physdevpath);
 319         util_name_list_cleanup(udev_device->udev, &udev_device->attr_list);
 320         info(udev_device->udev, "udev_device: %p released\n", udev_device);
 321         free(udev_device);
 322 }
 323
 324 /**
 325  * udev_device_get_devpath:
 326  * @udev_device: udev device
 327  *
 328  * Retrieve the kernel devpath value of the udev device. The path
 329  * does not contain the sys mount point, and starts with a '/'.
 330  *
 331  * Returns: the devpath of the udev device
 332  **/
 333 const char *udev_device_get_devpath(struct udev_device *udev_device)
 334 {
 335         if (udev_device == NULL)
 336                 return NULL;
 337         return udev_device->devpath;
 338 }
 339
 340 /**
 341  * udev_device_get_syspath:
 342  * @udev_device: udev device
 343  *
 344  * Retrieve the sys path of the udev device. The path is an
 345  * absolute path and starts with the sys mount point.
 346  *
 347  * Returns: the sys path of the udev device
 348  **/
 349 const char *udev_device_get_syspath(struct udev_device *udev_device)
 350 {
 351         if (udev_device == NULL)
 352                 return NULL;
 353         return udev_device->syspath;
 354 }
 355
 356 const char *udev_device_get_sysname(struct udev_device *udev_device)
 357 {
 358         if (udev_device == NULL)
 359                 return NULL;
 360         return udev_device->sysname;
 361 }
 362
 363 /**
 364  * udev_device_get_devname:
 365  * @udev_device: udev device
 366  *
 367  * Retrieve the device node file name belonging to the udev device.
 368  * The path is an absolute path, and starts with the device directory.
 369  *
 370  * Returns: the device node file name of the udev device, or #NULL if no device node exists
 371  **/
 372 const char *udev_device_get_devname(struct udev_device *udev_device)
 373 {
 374         if (udev_device == NULL)
 375                 return NULL;
 376         return udev_device->devname;
 377 }
 378
 379 /**
 380  * udev_device_get_subsystem:
 381  * @udev_device: udev device
 382  *
 383  * Retrieve the subsystem string of the udev device. The string does not
 384  * contain any "/".
 385  *
 386  * Returns: the subsystem name of the udev device, or #NULL if it can not be determined
 387  **/
 388 const char *udev_device_get_subsystem(struct udev_device *udev_device)
 389 {
 390         char subsystem[UTIL_NAME_SIZE];
 391
 392         if (udev_device == NULL)
 393                 return NULL;
 394         if (udev_device->subsystem != NULL)
 395                 return udev_device->subsystem;
 396
 397         /* read "subsytem" link */
 398         if (util_get_sys_subsystem(udev_device->udev, udev_device->syspath, subsystem, sizeof(subsystem)) > 0) {
 399                 udev_device->subsystem = strdup(subsystem);
 400                 return udev_device->subsystem;
 401         }
 402
 403         /* implicit names */
 404         if (strncmp(udev_device->devpath, "/module/", 8) == 0) {
 405                 udev_device->subsystem = strdup("module");
 406                 return udev_device->subsystem;
 407         }
 408         if (strstr(udev_device->devpath, "/drivers/") != NULL) {
 409                 udev_device->subsystem = strdup("drivers");
 410                 return udev_device->subsystem;
 411         }
 412         if (strncmp(udev_device->devpath, "/subsystem/", 11) == 0 ||
 413             strncmp(udev_device->devpath, "/class/", 7) == 0 ||
 414             strncmp(udev_device->devpath, "/bus/", 5) == 0) {
 415                 udev_device->subsystem = strdup("subsystem");
 416                 return udev_device->subsystem;
 417         }
 418         return NULL;
 419 }
 420
 421 /**
 422  * udev_device_get_devlinks:
 423  * @udev_device: udev device
 424  * @cb: function to be called for every device link found
 425  * @data: data to be passed to the function
 426  *
 427  * Retrieve the device links pointing to the device file of the
 428  * udev device. For every device link, the passed function will be
 429  * called with the device link string.
 430  * The path is an absolute path, and starts with the device directory.
 431  * If the function returns 1, remaning device links will be ignored.
 432  *
 433  * Returns: the number of device links passed to the caller, or a negative value on error
 434  **/
 435 int udev_device_get_devlinks(struct udev_device *udev_device,
 436                               int (*cb)(struct udev_device *udev_device, const char *value, void *data),
 437                               void *data)
 438 {
 439         struct util_name_entry *name_loop;
 440         int count = 0;
 441
 442         if (udev_device == NULL)
 443                 return -1;
 444         list_for_each_entry(name_loop, &udev_device->link_list, node) {
 445                 count++;
 446                 if (cb(udev_device, name_loop->name, data) != 0)
 447                         break;
 448         }
 449         return count;
 450 }
 451
 452 /**
 453  * udev_device_get_properties:
 454  * @udev_device: udev device
 455  * @cb: function to be called for every property found
 456  * @data: data to be passed to the function
 457  *
 458  * Retrieve the property key/value pairs belonging to the
 459  * udev device. For every key/value pair, the passed function will be
 460  * called. If the function returns 1, remaning properties will be
 461  * ignored.
 462  *
 463  * Returns: the number of properties passed to the caller, or a negative value on error
 464  **/
 465 int udev_device_get_properties(struct udev_device *udev_device,
 466                                 int (*cb)(struct udev_device *udev_device, const char *key, const char *value, void *data),
 467                                 void *data)
 468 {
 469         struct util_name_entry *name_loop;
 470         int count = 0;
 471
 472         if (udev_device == NULL)
 473                 return -1;
 474         list_for_each_entry(name_loop, &udev_device->env_list, node) {
 475                 count++;
 476                 if (cb(udev_device, name_loop->name, name_loop->value, data) != 0)
 477                         break;
 478         }
 479         return count;
 480 }
 481
 482 const char *udev_device_get_driver(struct udev_device *udev_device)
 483 {
 484         char driver[UTIL_NAME_SIZE];
 485
 486         if (udev_device == NULL)
 487                 return NULL;
 488         if (udev_device->driver != NULL)
 489                 return udev_device->driver;
 490         if (util_get_sys_driver(udev_device->udev, udev_device->syspath, driver, sizeof(driver)) < 2)
 491                 return NULL;
 492         udev_device->driver = strdup(driver);
 493         return udev_device->driver;
 494 }
 495
 496 dev_t udev_device_get_devnum(struct udev_device *udev_device)
 497 {
 498         if (udev_device == NULL)
 499                 return makedev(0, 0);
 500         return udev_device->devnum;
 501 }
 502
 503 const char *udev_device_get_action(struct udev_device *udev_device)
 504 {
 505         if (udev_device == NULL)
 506                 return NULL;
 507         return udev_device->action;
 508 }
 509
 510 unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device)
 511 {
 512         if (udev_device == NULL)
 513                 return 0;
 514         return udev_device->seqnum;
 515 }
 516
 517 const char *udev_device_get_attr_value(struct udev_device *udev_device, const char *attr)
 518 {
 519         struct util_name_entry *name_loop;
 520         char path[UTIL_PATH_SIZE];
 521         char value[UTIL_NAME_SIZE];
 522         struct stat statbuf;
 523         int fd;
 524         ssize_t size;
 525         const char *val = NULL;
 526
 527         /* look for possibly already cached result */
 528         list_for_each_entry(name_loop, &udev_device->attr_list, node) {
 529                 if (strcmp(name_loop->name, attr) == 0) {
 530                         info(udev_device->udev, "'%s' in cache '%s'\n", attr, name_loop->value);
 531                         return name_loop->value;
 532                 }
 533         }
 534
 535         util_strlcpy(path, udev_device_get_syspath(udev_device), sizeof(path));
 536         util_strlcat(path, "/", sizeof(path));
 537         util_strlcat(path, attr, sizeof(path));
 538
 539         if (lstat(path, &statbuf) != 0) {
 540                 info(udev_device->udev, "stat '%s' failed: %s\n", path, strerror(errno));
 541                 goto out;
 542         }
 543
 544         if (S_ISLNK(statbuf.st_mode)) {
 545                 /* links return the last element of the target path */
 546                 char target[UTIL_NAME_SIZE];
 547                 int len;
 548                 char *pos;
 549
 550                 len = readlink(path, target, sizeof(target));
 551                 if (len > 0) {
 552                         target[len] = '\0';
 553                         pos = strrchr(target, '/');
 554                         if (pos != NULL) {
 555                                 pos = &pos[1];
 556                                 info(udev_device->udev, "cache '%s' with link value '%s'\n", attr, pos);
 557                                 val = util_name_list_add(udev_device->udev, &udev_device->attr_list, attr, pos, 0)->value;
 558                         }
 559                 }
 560                 goto out;
 561         }
 562
 563         /* skip directories */
 564         if (S_ISDIR(statbuf.st_mode))
 565                 goto out;
 566
 567         /* skip non-readable files */
 568         if ((statbuf.st_mode & S_IRUSR) == 0)
 569                 goto out;
 570
 571         /* read attribute value */
 572         fd = open(path, O_RDONLY);
 573         if (fd < 0) {
 574                 info(udev_device->udev, "attribute '%s' can not be opened\n", path);
 575                 goto out;
 576         }
 577         size = read(fd, value, sizeof(value));
 578         close(fd);
 579         if (size < 0)
 580                 goto out;
 581         if (size == sizeof(value))
 582                 goto out;
 583
 584         /* got a valid value, store it in cache and return it */
 585         value[size] = '\0';
 586         util_remove_trailing_chars(value, '\n');
 587         info(udev_device->udev, "'%s' has attribute value '%s'\n", path, value);
 588         val = util_name_list_add(udev_device->udev, &udev_device->attr_list, attr, value, 0)->value;
 589 out:
 590         return val;
 591 }
 592 int device_set_syspath(struct udev_device *udev_device, const char *syspath)
 593 {
 594         const char *pos;
 595
 596         udev_device->syspath = strdup(syspath);
 597         if (udev_device->syspath ==  NULL)
 598                 return -ENOMEM;
 599         udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))];
 600         pos = strrchr(udev_device->syspath, '/');
 601         if (pos == NULL)
 602                 return -EINVAL;
 603         udev_device->sysname = &pos[1];
 604         return 0;
 605 }
 606
 607 int device_set_subsystem(struct udev_device *udev_device, const char *subsystem)
 608 {
 609         udev_device->subsystem = strdup(subsystem);
 610         if (udev_device->subsystem == NULL)
 611                 return -1;
 612         return 0;
 613 }
 614
 615 int device_set_devname(struct udev_device *udev_device, const char *devname)
 616 {
 617         udev_device->devname = strdup(devname);
 618         if (udev_device->devname == NULL)
 619                 return -ENOMEM;
 620         return 0;
 621 }
 622
 623 int device_add_devlink(struct udev_device *udev_device, const char *devlink)
 624 {
 625         if (util_name_list_add(udev_device->udev, &udev_device->link_list, devlink, NULL, 0) == NULL)
 626                 return -ENOMEM;
 627         return 0;
 628 }
 629
 630 int device_add_property(struct udev_device *udev_device, const char *key, const char *value)
 631 {
 632         if (util_name_list_add(udev_device->udev, &udev_device->env_list, key, value, 0) == NULL)
 633                 return -ENOMEM;
 634         return 0;
 635 }
 636
 637 int device_add_property_from_string(struct udev_device *udev_device, const char *property)
 638 {
 639         char name[UTIL_PATH_SIZE];
 640         char *val;
 641
 642         strncpy(name, property, sizeof(name));
 643         val = strchr(name, '=');
 644         if (val == NULL)
 645                 return -1;
 646         val[0] = '\0';
 647         val = &val[1];
 648         if (val[0] == '\0')
 649                 val = NULL;
 650         device_add_property(udev_device, name, val);
 651         return 0;
 652 }
 653
 654 int device_set_action(struct udev_device *udev_device, const char *action)
 655 {
 656         udev_device->action = strdup(action);
 657         if (udev_device->action == NULL)
 658                 return -ENOMEM;
 659         return 0;
 660 }
 661
 662 int device_set_driver(struct udev_device *udev_device, const char *driver)
 663 {
 664         udev_device->driver = strdup(driver);
 665         if (udev_device->driver == NULL)
 666                 return -ENOMEM;
 667         return 0;
 668 }
 669
 670 const char *device_get_devpath_old(struct udev_device *udev_device)
 671 {
 672         if (udev_device == NULL)
 673                 return NULL;
 674         return udev_device->devpath_old;
 675 }
 676
 677 int device_set_devpath_old(struct udev_device *udev_device, const char *devpath_old)
 678 {
 679         udev_device->devpath_old = strdup(devpath_old);
 680         if (udev_device->devpath_old == NULL)
 681                 return -ENOMEM;
 682         return 0;
 683 }
 684
 685 const char *device_get_physdevpath(struct udev_device *udev_device)
 686 {
 687         if (udev_device == NULL)
 688                 return NULL;
 689         return udev_device->physdevpath;
 690 }
 691
 692 int device_set_physdevpath(struct udev_device *udev_device, const char *physdevpath)
 693 {
 694         udev_device->physdevpath = strdup(physdevpath);
 695         if (udev_device->physdevpath == NULL)
 696                 return -ENOMEM;
 697         return 0;
 698 }
 699
 700 int device_get_timeout(struct udev_device *udev_device)
 701 {
 702         if (udev_device == NULL)
 703                 return -1;
 704         return udev_device->timeout;
 705 }
 706
 707 int device_set_timeout(struct udev_device *udev_device, int timeout)
 708 {
 709         udev_device->timeout = timeout;
 710         return 0;
 711 }
 712
 713 int device_set_seqnum(struct udev_device *udev_device, unsigned long long int seqnum)
 714 {
 715         udev_device->seqnum = seqnum;
 716         return 0;
 717 }
 718
 719 int device_set_devnum(struct udev_device *udev_device, dev_t devnum)
 720 {
 721         udev_device->devnum = devnum;
 722         return 0;
 723 }
 724
 725 int device_get_num_fake_partitions(struct udev_device *udev_device)
 726 {
 727         if (udev_device == NULL)
 728                 return -1;
 729         return udev_device->num_fake_partitions;
 730 }
 731
 732 int device_set_num_fake_partitions(struct udev_device *udev_device, int num)
 733 {
 734         udev_device->num_fake_partitions = num;
 735         return 0;
 736 }
 737
 738 int device_get_devlink_priority(struct udev_device *udev_device)
 739 {
 740         if (udev_device == NULL)
 741                 return -1;
 742         return udev_device->devlink_priority;
 743 }
 744
 745 int device_set_devlink_priority(struct udev_device *udev_device, int prio)
 746 {
 747          udev_device->devlink_priority = prio;
 748         return 0;
 749 }
 750
 751 int device_get_ignore_remove(struct udev_device *udev_device)
 752 {
 753         if (udev_device == NULL)
 754                 return -1;
 755         return udev_device->ignore_remove;
 756 }
 757
 758 int device_set_ignore_remove(struct udev_device *udev_device, int ignore)
 759 {
 760         udev_device->ignore_remove = ignore;
 761         return 0;
 762 }
 763