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 "config.h"
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <stddef.h>
  25 #include <unistd.h>
  26 #include <errno.h>
  27 #include <string.h>
  28 #include <dirent.h>
  29 #include <fcntl.h>
  30 #include <sys/stat.h>
  31
  32 #include "libudev.h"
  33 #include "libudev-private.h"
  34
  35 struct udev_device {
  36         int refcount;
  37         struct udev *udev;
  38         struct udev_device *parent_device;
  39         char *syspath;
  40         const char *devpath;
  41         const char *sysname;
  42         char *devname;
  43         char *subsystem;
  44         struct list_head link_list;
  45         struct list_head env_list;
  46         char *action;
  47         char *driver;
  48         char *devpath_old;
  49         char *physdevpath;
  50         int timeout;
  51         dev_t devnum;
  52         unsigned long long int seqnum;
  53         int num_fake_partitions;
  54         int devlink_priority;
  55         int ignore_remove;
  56         struct list_head attr_list;
  57 };
  58
  59 static size_t syspath_to_db_path(struct udev_device *udev_device, char *filename, size_t len)
  60 {
  61         size_t start;
  62
  63         /* translate to location of db file */
  64         util_strlcpy(filename, udev_get_dev_path(udev_device->udev), len);
  65         start = util_strlcat(filename, "/.udev/db/", len);
  66         util_strlcat(filename, udev_device->devpath, len);
  67         return util_path_encode(&filename[start], len - start);
  68 }
  69
  70 static int device_read_db(struct udev_device *udev_device)
  71 {
  72         struct stat stats;
  73         char filename[UTIL_PATH_SIZE];
  74         char line[UTIL_LINE_SIZE];
  75         FILE *f;
  76         int rc = 0;
  77
  78         syspath_to_db_path(udev_device, filename, sizeof(filename));
  79
  80         if (lstat(filename, &stats) != 0) {
  81                 info(udev_device->udev, "no db file to read %s: %s\n", filename, strerror(errno));
  82                 return -1;
  83         }
  84         if ((stats.st_mode & S_IFMT) == S_IFLNK) {
  85                 char target[UTIL_PATH_SIZE];
  86                 int target_len;
  87
  88                 info(udev_device->udev, "found a symlink as db file\n");
  89                 target_len = readlink(filename, target, sizeof(target));
  90                 if (target_len > 0)
  91                         target[target_len] = '\0';
  92                 else {
  93                         info(udev_device->udev, "error reading db link %s: %s\n", filename, strerror(errno));
  94                         return -1;
  95                 }
  96                 dbg(udev_device->udev, "db link points to '%s'\n", target);
  97                 if (asprintf(&udev_device->devname, "%s/%s", udev_get_dev_path(udev_device->udev), target) < 0)
  98                         return -ENOMEM;
  99                 return 0;
 100         }
 101
 102         f = fopen(filename, "r");
 103         if (f == NULL) {
 104                 info(udev_device->udev, "error reading db file %s: %s\n", filename, strerror(errno));
 105                 return -1;
 106         }
 107         while (fgets(line, sizeof(line), f)) {
 108                 ssize_t len;
 109                 const char *val;
 110                 unsigned int maj, min;
 111
 112                 len = strlen(line);
 113                 if (len < 4)
 114                         break;
 115                 line[len-1] = '\0';
 116                 val = &line[2];
 117
 118                 switch(line[0]) {
 119                 case 'N':
 120                         asprintf(&udev_device->devname, "%s/%s", udev_get_dev_path(udev_device->udev), val);
 121                         break;
 122                 case 'M':
 123                         sscanf(val, "%u:%u", &maj, &min);
 124                         device_set_devnum(udev_device, makedev(maj, min));
 125                         break;
 126                 case 'S':
 127                         util_strlcpy(filename, udev_get_dev_path(udev_device->udev), sizeof(filename));
 128                         util_strlcat(filename, "/", sizeof(filename));
 129                         util_strlcat(filename, val, sizeof(filename));
 130                         device_add_devlink(udev_device, filename);
 131                         break;
 132                 case 'L':
 133                         device_set_devlink_priority(udev_device, atoi(val));
 134                         break;
 135                 case 'T':
 136                         device_set_timeout(udev_device,  atoi(val));
 137                         break;
 138                 case 'A':
 139                         device_set_num_fake_partitions(udev_device, atoi(val));
 140                         break;
 141                 case 'R':
 142                         device_set_ignore_remove(udev_device, atoi(val));
 143                         break;
 144                 case 'E':
 145                         device_add_property_from_string(udev_device, val);
 146                         break;
 147                 }
 148         }
 149         fclose(f);
 150
 151         return rc;
 152 }
 153
 154 struct udev_device *device_init(struct udev *udev)
 155 {
 156         struct udev_device *udev_device;
 157
 158         if (udev == NULL)
 159                 return NULL;
 160
 161         udev_device = malloc(sizeof(struct udev_device));
 162         if (udev_device == NULL)
 163                 return NULL;
 164         memset(udev_device, 0x00, sizeof(struct udev_device));
 165         udev_device->refcount = 1;
 166         udev_device->udev = udev;
 167         INIT_LIST_HEAD(&udev_device->link_list);
 168         INIT_LIST_HEAD(&udev_device->env_list);
 169         INIT_LIST_HEAD(&udev_device->attr_list);
 170         info(udev_device->udev, "udev_device: %p created\n", udev_device);
 171         return udev_device;
 172 }
 173
 174 /**
 175  * udev_device_new_from_syspath:
 176  * @udev: udev library context
 177  * @syspath: sys device path including sys directory
 178  *
 179  * Create new udev device, and fill in information from the sys
 180  * device and the udev database entry. The sypath is the absolute
 181  * path to the device, including the sys mount point.
 182  *
 183  * The initial refcount is 1, and needs to be decremented to
 184  * release the ressources of the udev device.
 185  *
 186  * Returns: a new udev device, or #NULL, if it does not exist
 187  **/
 188 struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath)
 189 {
 190         char path[UTIL_PATH_SIZE];
 191         struct stat statbuf;
 192         struct udev_device *udev_device;
 193
 194         if (udev == NULL)
 195                 return NULL;
 196         if (syspath == NULL)
 197                 return NULL;
 198
 199         util_strlcpy(path, syspath, sizeof(path));
 200         util_strlcat(path, "/uevent", sizeof(path));
 201         if (stat(path, &statbuf) != 0) {
 202                 info(udev, "not a device :%s\n", syspath);
 203                 return NULL;
 204         }
 205
 206         udev_device = device_init(udev);
 207         if (udev_device == NULL)
 208                 return NULL;
 209
 210         /* resolve possible symlink to real path */
 211         util_strlcpy(path, syspath, sizeof(path));
 212         util_resolve_sys_link(udev, path, sizeof(path));
 213         device_set_syspath(udev_device, path);
 214         info(udev, "device %p has devpath '%s'\n", udev_device, udev_device_get_devpath(udev_device));
 215
 216         if (device_read_db(udev_device) >= 0)
 217                 info(udev, "device %p filled with udev database data\n", udev_device);
 218         return udev_device;
 219 }
 220
 221 static struct udev_device *device_new_from_parent(struct udev_device *udev_device)
 222 {
 223         struct udev_device *udev_device_parent = NULL;
 224         char path[UTIL_PATH_SIZE];
 225         char *pos;
 226
 227         if (udev_device == NULL)
 228                 return NULL;
 229
 230         util_strlcpy(path, udev_device->syspath, sizeof(path));
 231         while (1) {
 232                 pos = strrchr(path, '/');
 233                 if (pos == path || pos == NULL)
 234                         break;
 235                 pos[0] = '\0';
 236                 udev_device_parent = udev_device_new_from_syspath(udev_device->udev, path);
 237                 if (udev_device_parent != NULL)
 238                         return udev_device_parent;
 239         }
 240
 241         /* follow "device" link in deprecated sys /sys/class/ layout */
 242         if (strncmp(udev_device->devpath, "/class/", 7) == 0) {
 243                 util_strlcpy(path, udev_device->syspath, sizeof(path));
 244                 util_strlcat(path, "/device", sizeof(path));
 245                 if (util_resolve_sys_link(udev_device->udev, path, sizeof(path)) == 0) {
 246                         udev_device_parent = udev_device_new_from_syspath(udev_device->udev, path);
 247                         if (udev_device_parent != NULL)
 248                                 return udev_device_parent;
 249                 }
 250         }
 251         return NULL;
 252 }
 253
 254 struct udev_device *udev_device_get_parent(struct udev_device *udev_device)
 255 {
 256         if (udev_device->parent_device != NULL) {
 257                 info(udev_device->udev, "returning existing parent %p\n", udev_device->parent_device);
 258                 return udev_device->parent_device;
 259         }
 260         udev_device->parent_device = device_new_from_parent(udev_device);
 261         return udev_device->parent_device;
 262 }
 263
 264 /**
 265  * udev_device_get_udev:
 266  * @udev_device: udev device
 267  *
 268  * Retrieve the udev library context the device was created with.
 269  *
 270  * Returns: the udev library context
 271  **/
 272 struct udev *udev_device_get_udev(struct udev_device *udev_device)
 273 {
 274         if (udev_device == NULL)
 275                 return NULL;
 276         return udev_device->udev;
 277 }
 278
 279 /**
 280  * udev_device_ref:
 281  * @udev_device: udev device
 282  *
 283  * Take a reference of a udev device.
 284  *
 285  * Returns: the passed udev device
 286  **/
 287 struct udev_device *udev_device_ref(struct udev_device *udev_device)
 288 {
 289         if (udev_device == NULL)
 290                 return NULL;
 291         udev_device->refcount++;
 292         return udev_device;
 293 }
 294
 295 /**
 296  * udev_device_unref:
 297  * @udev_device: udev device
 298  *
 299  * Drop a reference of a udev device. If the refcount reaches zero,
 300  * the ressources of the device will be released.
 301  *
 302  **/
 303 void udev_device_unref(struct udev_device *udev_device)
 304 {
 305         if (udev_device == NULL)
 306                 return;
 307         udev_device->refcount--;
 308         if (udev_device->refcount > 0)
 309                 return;
 310         if (udev_device->parent_device != NULL)
 311                 udev_device_unref(udev_device->parent_device);
 312         free(udev_device->syspath);
 313         free(udev_device->devname);
 314         free(udev_device->subsystem);
 315         util_name_list_cleanup(udev_device->udev, &udev_device->link_list);
 316         util_name_list_cleanup(udev_device->udev, &udev_device->env_list);
 317         free(udev_device->action);
 318         free(udev_device->driver);
 319         free(udev_device->devpath_old);
 320         free(udev_device->physdevpath);
 321         util_name_list_cleanup(udev_device->udev, &udev_device->attr_list);
 322         info(udev_device->udev, "udev_device: %p released\n", udev_device);
 323         free(udev_device);
 324 }
 325
 326 /**
 327  * udev_device_get_devpath:
 328  * @udev_device: udev device
 329  *
 330  * Retrieve the kernel devpath value of the udev device. The path
 331  * does not contain the sys mount point, and starts with a '/'.
 332  *
 333  * Returns: the devpath of the udev device
 334  **/
 335 const char *udev_device_get_devpath(struct udev_device *udev_device)
 336 {
 337         if (udev_device == NULL)
 338                 return NULL;
 339         return udev_device->devpath;
 340 }
 341
 342 /**
 343  * udev_device_get_syspath:
 344  * @udev_device: udev device
 345  *
 346  * Retrieve the sys path of the udev device. The path is an
 347  * absolute path and starts with the sys mount point.
 348  *
 349  * Returns: the sys path of the udev device
 350  **/
 351 const char *udev_device_get_syspath(struct udev_device *udev_device)
 352 {
 353         if (udev_device == NULL)
 354                 return NULL;
 355         return udev_device->syspath;
 356 }
 357
 358 const char *udev_device_get_sysname(struct udev_device *udev_device)
 359 {
 360         if (udev_device == NULL)
 361                 return NULL;
 362         return udev_device->sysname;
 363 }
 364
 365 /**
 366  * udev_device_get_devname:
 367  * @udev_device: udev device
 368  *
 369  * Retrieve the device node file name belonging to the udev device.
 370  * The path is an absolute path, and starts with the device directory.
 371  *
 372  * Returns: the device node file name of the udev device, or #NULL if no device node exists
 373  **/
 374 const char *udev_device_get_devname(struct udev_device *udev_device)
 375 {
 376         if (udev_device == NULL)
 377                 return NULL;
 378         return udev_device->devname;
 379 }
 380
 381 /**
 382  * udev_device_get_subsystem:
 383  * @udev_device: udev device
 384  *
 385  * Retrieve the subsystem string of the udev device. The string does not
 386  * contain any "/".
 387  *
 388  * Returns: the subsystem name of the udev device, or #NULL if it can not be determined
 389  **/
 390 const char *udev_device_get_subsystem(struct udev_device *udev_device)
 391 {
 392         char subsystem[UTIL_NAME_SIZE];
 393
 394         if (udev_device == NULL)
 395                 return NULL;
 396         if (udev_device->subsystem != NULL)
 397                 return udev_device->subsystem;
 398
 399         /* read "subsytem" link */
 400         if (util_get_sys_subsystem(udev_device->udev, udev_device->syspath, subsystem, sizeof(subsystem)) == 0) {
 401                 udev_device->subsystem = strdup(subsystem);
 402                 return udev_device->subsystem;
 403         }
 404
 405         /* implicit names */
 406         if (strncmp(udev_device->devpath, "/module/", 8) == 0) {
 407                 udev_device->subsystem = strdup("module");
 408                 return udev_device->subsystem;
 409         }
 410         if (strstr(udev_device->devpath, "/drivers/") != NULL) {
 411                 udev_device->subsystem = strdup("drivers");
 412                 return udev_device->subsystem;
 413         }
 414         if (strncmp(udev_device->devpath, "/subsystem/", 11) == 0 ||
 415             strncmp(udev_device->devpath, "/class/", 7) == 0 ||
 416             strncmp(udev_device->devpath, "/bus/", 5) == 0) {
 417                 udev_device->subsystem = strdup("subsystem");
 418                 return udev_device->subsystem;
 419         }
 420         return NULL;
 421 }
 422
 423 /**
 424  * udev_device_get_devlinks:
 425  * @udev_device: udev device
 426  * @cb: function to be called for every device link found
 427  * @data: data to be passed to the function
 428  *
 429  * Retrieve the device links pointing to the device file of the
 430  * udev device. For every device link, the passed function will be
 431  * called with the device link string.
 432  * The path is an absolute path, and starts with the device directory.
 433  * If the function returns 1, remaning device links will be ignored.
 434  *
 435  * Returns: the number of device links passed to the caller, or a negative value on error
 436  **/
 437 int udev_device_get_devlinks(struct udev_device *udev_device,
 438                               int (*cb)(struct udev_device *udev_device, const char *value, void *data),
 439                               void *data)
 440 {
 441         struct util_name_entry *name_loop;
 442         int count = 0;
 443
 444         if (udev_device == NULL)
 445                 return -1;
 446         list_for_each_entry(name_loop, &udev_device->link_list, node) {
 447                 count++;
 448                 if (cb(udev_device, name_loop->name, data) != 0)
 449                         break;
 450         }
 451         return count;
 452 }
 453
 454 /**
 455  * udev_device_get_properties:
 456  * @udev_device: udev device
 457  * @cb: function to be called for every property found
 458  * @data: data to be passed to the function
 459  *
 460  * Retrieve the property key/value pairs belonging to the
 461  * udev device. For every key/value pair, the passed function will be
 462  * called. If the function returns 1, remaning properties will be
 463  * ignored.
 464  *
 465  * Returns: the number of properties passed to the caller, or a negative value on error
 466  **/
 467 int udev_device_get_properties(struct udev_device *udev_device,
 468                                 int (*cb)(struct udev_device *udev_device, const char *key, const char *value, void *data),
 469                                 void *data)
 470 {
 471         struct util_name_entry *name_loop;
 472         int count = 0;
 473
 474         if (udev_device == NULL)
 475                 return -1;
 476         list_for_each_entry(name_loop, &udev_device->env_list, node) {
 477                 count++;
 478                 if (cb(udev_device, name_loop->name, name_loop->value, data) != 0)
 479                         break;
 480         }
 481         return count;
 482 }
 483
 484 const char *udev_device_get_driver(struct udev_device *udev_device)
 485 {
 486         char driver[UTIL_NAME_SIZE];
 487
 488         if (udev_device == NULL)
 489                 return NULL;
 490         if (udev_device->driver != NULL)
 491                 return udev_device->driver;
 492         if (util_get_sys_driver(udev_device->udev, udev_device->syspath, driver, sizeof(driver)) < 2)
 493                 return NULL;
 494         udev_device->driver = strdup(driver);
 495         return udev_device->driver;
 496 }
 497
 498 dev_t udev_device_get_devnum(struct udev_device *udev_device)
 499 {
 500         if (udev_device == NULL)
 501                 return makedev(0, 0);
 502         return udev_device->devnum;
 503 }
 504
 505 const char *udev_device_get_action(struct udev_device *udev_device)
 506 {
 507         if (udev_device == NULL)
 508                 return NULL;
 509         return udev_device->action;
 510 }
 511
 512 unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device)
 513 {
 514         if (udev_device == NULL)
 515                 return 0;
 516         return udev_device->seqnum;
 517 }
 518
 519 const char *udev_device_get_attr_value(struct udev_device *udev_device, const char *attr)
 520 {
 521         struct util_name_entry *name_loop;
 522         char path[UTIL_PATH_SIZE];
 523         char value[UTIL_NAME_SIZE];
 524         struct stat statbuf;
 525         int fd;
 526         ssize_t size;
 527         const char *val = NULL;
 528
 529         /* look for possibly already cached result */
 530         list_for_each_entry(name_loop, &udev_device->attr_list, node) {
 531                 if (strcmp(name_loop->name, attr) == 0) {
 532                         info(udev_device->udev, "'%s' in cache '%s'\n", attr, name_loop->value);
 533                         return name_loop->value;
 534                 }
 535         }
 536
 537         util_strlcpy(path, udev_device_get_syspath(udev_device), sizeof(path));
 538         util_strlcat(path, "/", sizeof(path));
 539         util_strlcat(path, attr, sizeof(path));
 540
 541         if (lstat(path, &statbuf) != 0) {
 542                 info(udev_device->udev, "stat '%s' failed: %s\n", path, strerror(errno));
 543                 goto out;
 544         }
 545
 546         if (S_ISLNK(statbuf.st_mode)) {
 547                 /* links return the last element of the target path */
 548                 char target[UTIL_NAME_SIZE];
 549                 int len;
 550                 char *pos;
 551
 552                 len = readlink(path, target, sizeof(target));
 553                 if (len > 0) {
 554                         target[len] = '\0';
 555                         pos = strrchr(target, '/');
 556                         if (pos != NULL) {
 557                                 pos = &pos[1];
 558                                 info(udev_device->udev, "cache '%s' with link value '%s'\n", attr, pos);
 559                                 val = util_name_list_add(udev_device->udev, &udev_device->attr_list, attr, pos, 0)->value;
 560                         }
 561                 }
 562                 goto out;
 563         }
 564
 565         /* skip directories */
 566         if (S_ISDIR(statbuf.st_mode))
 567                 goto out;
 568
 569         /* skip non-readable files */
 570         if ((statbuf.st_mode & S_IRUSR) == 0)
 571                 goto out;
 572
 573         /* read attribute value */
 574         fd = open(path, O_RDONLY);
 575         if (fd < 0) {
 576                 info(udev_device->udev, "attribute '%s' can not be opened\n", path);
 577                 goto out;
 578         }
 579         size = read(fd, value, sizeof(value));
 580         close(fd);
 581         if (size < 0)
 582                 goto out;
 583         if (size == sizeof(value))
 584                 goto out;
 585
 586         /* got a valid value, store it in cache and return it */
 587         value[size] = '\0';
 588         util_remove_trailing_chars(value, '\n');
 589         info(udev_device->udev, "'%s' has attribute value '%s'\n", path, value);
 590         val = util_name_list_add(udev_device->udev, &udev_device->attr_list, attr, value, 0)->value;
 591 out:
 592         return val;
 593 }
 594 int device_set_syspath(struct udev_device *udev_device, const char *syspath)
 595 {
 596         const char *pos;
 597
 598         udev_device->syspath = strdup(syspath);
 599         if (udev_device->syspath ==  NULL)
 600                 return -ENOMEM;
 601         udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))];
 602         pos = strrchr(udev_device->syspath, '/');
 603         if (pos == NULL)
 604                 return -EINVAL;
 605         udev_device->sysname = &pos[1];
 606         return 0;
 607 }
 608
 609 int device_set_subsystem(struct udev_device *udev_device, const char *subsystem)
 610 {
 611         udev_device->subsystem = strdup(subsystem);
 612         if (udev_device->subsystem == NULL)
 613                 return -1;
 614         return 0;
 615 }
 616
 617 int device_set_devname(struct udev_device *udev_device, const char *devname)
 618 {
 619         udev_device->devname = strdup(devname);
 620         if (udev_device->devname == NULL)
 621                 return -ENOMEM;
 622         return 0;
 623 }
 624
 625 int device_add_devlink(struct udev_device *udev_device, const char *devlink)
 626 {
 627         if (util_name_list_add(udev_device->udev, &udev_device->link_list, devlink, NULL, 0) == NULL)
 628                 return -ENOMEM;
 629         return 0;
 630 }
 631
 632 int device_add_property(struct udev_device *udev_device, const char *key, const char *value)
 633 {
 634         if (util_name_list_add(udev_device->udev, &udev_device->env_list, key, value, 0) == NULL)
 635                 return -ENOMEM;
 636         return 0;
 637 }
 638
 639 int device_add_property_from_string(struct udev_device *udev_device, const char *property)
 640 {
 641         char name[UTIL_PATH_SIZE];
 642         char *val;
 643
 644         strncpy(name, property, sizeof(name));
 645         val = strchr(name, '=');
 646         if (val == NULL)
 647                 return -1;
 648         val[0] = '\0';
 649         val = &val[1];
 650         if (val[0] == '\0')
 651                 val = NULL;
 652         device_add_property(udev_device, name, val);
 653         return 0;
 654 }
 655
 656 int device_set_action(struct udev_device *udev_device, const char *action)
 657 {
 658         udev_device->action = strdup(action);
 659         if (udev_device->action == NULL)
 660                 return -ENOMEM;
 661         return 0;
 662 }
 663
 664 int device_set_driver(struct udev_device *udev_device, const char *driver)
 665 {
 666         udev_device->driver = strdup(driver);
 667         if (udev_device->driver == NULL)
 668                 return -ENOMEM;
 669         return 0;
 670 }
 671
 672 const char *device_get_devpath_old(struct udev_device *udev_device)
 673 {
 674         if (udev_device == NULL)
 675                 return NULL;
 676         return udev_device->devpath_old;
 677 }
 678
 679 int device_set_devpath_old(struct udev_device *udev_device, const char *devpath_old)
 680 {
 681         udev_device->devpath_old = strdup(devpath_old);
 682         if (udev_device->devpath_old == NULL)
 683                 return -ENOMEM;
 684         return 0;
 685 }
 686
 687 const char *device_get_physdevpath(struct udev_device *udev_device)
 688 {
 689         if (udev_device == NULL)
 690                 return NULL;
 691         return udev_device->physdevpath;
 692 }
 693
 694 int device_set_physdevpath(struct udev_device *udev_device, const char *physdevpath)
 695 {
 696         udev_device->physdevpath = strdup(physdevpath);
 697         if (udev_device->physdevpath == NULL)
 698                 return -ENOMEM;
 699         return 0;
 700 }
 701
 702 int device_get_timeout(struct udev_device *udev_device)
 703 {
 704         if (udev_device == NULL)
 705                 return -1;
 706         return udev_device->timeout;
 707 }
 708
 709 int device_set_timeout(struct udev_device *udev_device, int timeout)
 710 {
 711         udev_device->timeout = timeout;
 712         return 0;
 713 }
 714
 715 int device_set_seqnum(struct udev_device *udev_device, unsigned long long int seqnum)
 716 {
 717         udev_device->seqnum = seqnum;
 718         return 0;
 719 }
 720
 721 int device_set_devnum(struct udev_device *udev_device, dev_t devnum)
 722 {
 723         udev_device->devnum = devnum;
 724         return 0;
 725 }
 726
 727 int device_get_num_fake_partitions(struct udev_device *udev_device)
 728 {
 729         if (udev_device == NULL)
 730                 return -1;
 731         return udev_device->num_fake_partitions;
 732 }
 733
 734 int device_set_num_fake_partitions(struct udev_device *udev_device, int num)
 735 {
 736         udev_device->num_fake_partitions = num;
 737         return 0;
 738 }
 739
 740 int device_get_devlink_priority(struct udev_device *udev_device)
 741 {
 742         if (udev_device == NULL)
 743                 return -1;
 744         return udev_device->devlink_priority;
 745 }
 746
 747 int device_set_devlink_priority(struct udev_device *udev_device, int prio)
 748 {
 749          udev_device->devlink_priority = prio;
 750         return 0;
 751 }
 752
 753 int device_get_ignore_remove(struct udev_device *udev_device)
 754 {
 755         if (udev_device == NULL)
 756                 return -1;
 757         return udev_device->ignore_remove;
 758 }
 759
 760 int device_set_ignore_remove(struct udev_device *udev_device, int ignore)
 761 {
 762         udev_device->ignore_remove = ignore;
 763         return 0;
 764 }
 765