Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /********************************************************************* |
| 2 | * |
| 3 | * Filename: irias_object.c |
| 4 | * Version: 0.3 |
| 5 | * Description: IAS object database and functions |
| 6 | * Status: Experimental. |
| 7 | * Author: Dag Brattli <dagb@cs.uit.no> |
| 8 | * Created at: Thu Oct 1 22:50:04 1998 |
| 9 | * Modified at: Wed Dec 15 11:23:16 1999 |
| 10 | * Modified by: Dag Brattli <dagb@cs.uit.no> |
| 11 | * |
| 12 | * Copyright (c) 1998-1999 Dag Brattli, All Rights Reserved. |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or |
| 15 | * modify it under the terms of the GNU General Public License as |
| 16 | * published by the Free Software Foundation; either version 2 of |
| 17 | * the License, or (at your option) any later version. |
| 18 | * |
| 19 | * Neither Dag Brattli nor University of Tromsø admit liability nor |
| 20 | * provide warranty for any of this software. This material is |
| 21 | * provided "AS-IS" and at no charge. |
| 22 | * |
| 23 | ********************************************************************/ |
| 24 | |
| 25 | #include <linux/string.h> |
| 26 | #include <linux/socket.h> |
| 27 | #include <linux/module.h> |
| 28 | |
| 29 | #include <net/irda/irda.h> |
| 30 | #include <net/irda/irias_object.h> |
| 31 | |
| 32 | hashbin_t *irias_objects; |
| 33 | |
| 34 | /* |
| 35 | * Used when a missing value needs to be returned |
| 36 | */ |
| 37 | struct ias_value irias_missing = { IAS_MISSING, 0, 0, 0, {0}}; |
| 38 | |
| 39 | /* |
| 40 | * Function strndup (str, max) |
| 41 | * |
| 42 | * My own kernel version of strndup! |
| 43 | * |
| 44 | * Faster, check boundary... Jean II |
| 45 | */ |
| 46 | static char *strndup(char *str, int max) |
| 47 | { |
| 48 | char *new_str; |
| 49 | int len; |
| 50 | |
| 51 | /* Check string */ |
| 52 | if (str == NULL) |
| 53 | return NULL; |
| 54 | /* Check length, truncate */ |
| 55 | len = strlen(str); |
| 56 | if(len > max) |
| 57 | len = max; |
| 58 | |
| 59 | /* Allocate new string */ |
| 60 | new_str = kmalloc(len + 1, GFP_ATOMIC); |
| 61 | if (new_str == NULL) { |
| 62 | IRDA_WARNING("%s: Unable to kmalloc!\n", __FUNCTION__); |
| 63 | return NULL; |
| 64 | } |
| 65 | |
| 66 | /* Copy and truncate */ |
| 67 | memcpy(new_str, str, len); |
| 68 | new_str[len] = '\0'; |
| 69 | |
| 70 | return new_str; |
| 71 | } |
| 72 | |
| 73 | /* |
| 74 | * Function ias_new_object (name, id) |
| 75 | * |
| 76 | * Create a new IAS object |
| 77 | * |
| 78 | */ |
| 79 | struct ias_object *irias_new_object( char *name, int id) |
| 80 | { |
| 81 | struct ias_object *obj; |
| 82 | |
| 83 | IRDA_DEBUG( 4, "%s()\n", __FUNCTION__); |
| 84 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 85 | obj = kzalloc(sizeof(struct ias_object), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | if (obj == NULL) { |
| 87 | IRDA_WARNING("%s(), Unable to allocate object!\n", |
| 88 | __FUNCTION__); |
| 89 | return NULL; |
| 90 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
| 92 | obj->magic = IAS_OBJECT_MAGIC; |
| 93 | obj->name = strndup(name, IAS_MAX_CLASSNAME); |
| 94 | obj->id = id; |
| 95 | |
| 96 | /* Locking notes : the attrib spinlock has lower precendence |
| 97 | * than the objects spinlock. Never grap the objects spinlock |
| 98 | * while holding any attrib spinlock (risk of deadlock). Jean II */ |
| 99 | obj->attribs = hashbin_new(HB_LOCK); |
| 100 | |
| 101 | if (obj->attribs == NULL) { |
| 102 | IRDA_WARNING("%s(), Unable to allocate attribs!\n", |
| 103 | __FUNCTION__); |
| 104 | kfree(obj); |
| 105 | return NULL; |
| 106 | } |
| 107 | |
| 108 | return obj; |
| 109 | } |
| 110 | EXPORT_SYMBOL(irias_new_object); |
| 111 | |
| 112 | /* |
| 113 | * Function irias_delete_attrib (attrib) |
| 114 | * |
| 115 | * Delete given attribute and deallocate all its memory |
| 116 | * |
| 117 | */ |
| 118 | static void __irias_delete_attrib(struct ias_attrib *attrib) |
| 119 | { |
| 120 | IRDA_ASSERT(attrib != NULL, return;); |
| 121 | IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC, return;); |
| 122 | |
Jesper Juhl | a51482b | 2005-11-08 09:41:34 -0800 | [diff] [blame] | 123 | kfree(attrib->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
| 125 | irias_delete_value(attrib->value); |
| 126 | attrib->magic = ~IAS_ATTRIB_MAGIC; |
| 127 | |
| 128 | kfree(attrib); |
| 129 | } |
| 130 | |
| 131 | void __irias_delete_object(struct ias_object *obj) |
| 132 | { |
| 133 | IRDA_ASSERT(obj != NULL, return;); |
| 134 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); |
| 135 | |
Jesper Juhl | a51482b | 2005-11-08 09:41:34 -0800 | [diff] [blame] | 136 | kfree(obj->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
| 138 | hashbin_delete(obj->attribs, (FREE_FUNC) __irias_delete_attrib); |
| 139 | |
| 140 | obj->magic = ~IAS_OBJECT_MAGIC; |
| 141 | |
| 142 | kfree(obj); |
| 143 | } |
| 144 | |
| 145 | /* |
| 146 | * Function irias_delete_object (obj) |
| 147 | * |
| 148 | * Remove object from hashbin and deallocate all attributes associated with |
| 149 | * with this object and the object itself |
| 150 | * |
| 151 | */ |
| 152 | int irias_delete_object(struct ias_object *obj) |
| 153 | { |
| 154 | struct ias_object *node; |
| 155 | |
| 156 | IRDA_ASSERT(obj != NULL, return -1;); |
| 157 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -1;); |
| 158 | |
| 159 | /* Remove from list */ |
| 160 | node = hashbin_remove_this(irias_objects, (irda_queue_t *) obj); |
| 161 | if (!node) |
| 162 | IRDA_DEBUG( 0, "%s(), object already removed!\n", |
| 163 | __FUNCTION__); |
| 164 | |
| 165 | /* Destroy */ |
| 166 | __irias_delete_object(obj); |
| 167 | |
| 168 | return 0; |
| 169 | } |
| 170 | EXPORT_SYMBOL(irias_delete_object); |
| 171 | |
| 172 | /* |
| 173 | * Function irias_delete_attrib (obj) |
| 174 | * |
| 175 | * Remove attribute from hashbin and, if it was the last attribute of |
| 176 | * the object, remove the object as well. |
| 177 | * |
| 178 | */ |
| 179 | int irias_delete_attrib(struct ias_object *obj, struct ias_attrib *attrib, |
| 180 | int cleanobject) |
| 181 | { |
| 182 | struct ias_attrib *node; |
| 183 | |
| 184 | IRDA_ASSERT(obj != NULL, return -1;); |
| 185 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -1;); |
| 186 | IRDA_ASSERT(attrib != NULL, return -1;); |
| 187 | |
| 188 | /* Remove attribute from object */ |
| 189 | node = hashbin_remove_this(obj->attribs, (irda_queue_t *) attrib); |
| 190 | if (!node) |
| 191 | return 0; /* Already removed or non-existent */ |
| 192 | |
| 193 | /* Deallocate attribute */ |
| 194 | __irias_delete_attrib(node); |
| 195 | |
| 196 | /* Check if object has still some attributes, destroy it if none. |
| 197 | * At first glance, this look dangerous, as the kernel reference |
| 198 | * various IAS objects. However, we only use this function on |
| 199 | * user attributes, not kernel attributes, so there is no risk |
| 200 | * of deleting a kernel object this way. Jean II */ |
| 201 | node = (struct ias_attrib *) hashbin_get_first(obj->attribs); |
| 202 | if (cleanobject && !node) |
| 203 | irias_delete_object(obj); |
| 204 | |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | /* |
| 209 | * Function irias_insert_object (obj) |
| 210 | * |
| 211 | * Insert an object into the LM-IAS database |
| 212 | * |
| 213 | */ |
| 214 | void irias_insert_object(struct ias_object *obj) |
| 215 | { |
| 216 | IRDA_ASSERT(obj != NULL, return;); |
| 217 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); |
| 218 | |
| 219 | hashbin_insert(irias_objects, (irda_queue_t *) obj, 0, obj->name); |
| 220 | } |
| 221 | EXPORT_SYMBOL(irias_insert_object); |
| 222 | |
| 223 | /* |
| 224 | * Function irias_find_object (name) |
| 225 | * |
| 226 | * Find object with given name |
| 227 | * |
| 228 | */ |
| 229 | struct ias_object *irias_find_object(char *name) |
| 230 | { |
| 231 | IRDA_ASSERT(name != NULL, return NULL;); |
| 232 | |
| 233 | /* Unsafe (locking), object might change */ |
| 234 | return hashbin_lock_find(irias_objects, 0, name); |
| 235 | } |
| 236 | EXPORT_SYMBOL(irias_find_object); |
| 237 | |
| 238 | /* |
| 239 | * Function irias_find_attrib (obj, name) |
| 240 | * |
| 241 | * Find named attribute in object |
| 242 | * |
| 243 | */ |
| 244 | struct ias_attrib *irias_find_attrib(struct ias_object *obj, char *name) |
| 245 | { |
| 246 | struct ias_attrib *attrib; |
| 247 | |
| 248 | IRDA_ASSERT(obj != NULL, return NULL;); |
| 249 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return NULL;); |
| 250 | IRDA_ASSERT(name != NULL, return NULL;); |
| 251 | |
| 252 | attrib = hashbin_lock_find(obj->attribs, 0, name); |
| 253 | if (attrib == NULL) |
| 254 | return NULL; |
| 255 | |
| 256 | /* Unsafe (locking), attrib might change */ |
| 257 | return attrib; |
| 258 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
| 260 | /* |
| 261 | * Function irias_add_attribute (obj, attrib) |
| 262 | * |
| 263 | * Add attribute to object |
| 264 | * |
| 265 | */ |
| 266 | static void irias_add_attrib(struct ias_object *obj, struct ias_attrib *attrib, |
| 267 | int owner) |
| 268 | { |
| 269 | IRDA_ASSERT(obj != NULL, return;); |
| 270 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); |
| 271 | |
| 272 | IRDA_ASSERT(attrib != NULL, return;); |
| 273 | IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC, return;); |
| 274 | |
| 275 | /* Set if attrib is owned by kernel or user space */ |
| 276 | attrib->value->owner = owner; |
| 277 | |
| 278 | hashbin_insert(obj->attribs, (irda_queue_t *) attrib, 0, attrib->name); |
| 279 | } |
| 280 | |
| 281 | /* |
| 282 | * Function irias_object_change_attribute (obj_name, attrib_name, new_value) |
| 283 | * |
| 284 | * Change the value of an objects attribute. |
| 285 | * |
| 286 | */ |
| 287 | int irias_object_change_attribute(char *obj_name, char *attrib_name, |
| 288 | struct ias_value *new_value) |
| 289 | { |
| 290 | struct ias_object *obj; |
| 291 | struct ias_attrib *attrib; |
| 292 | unsigned long flags; |
| 293 | |
| 294 | /* Find object */ |
| 295 | obj = hashbin_lock_find(irias_objects, 0, obj_name); |
| 296 | if (obj == NULL) { |
| 297 | IRDA_WARNING("%s: Unable to find object: %s\n", __FUNCTION__, |
| 298 | obj_name); |
| 299 | return -1; |
| 300 | } |
| 301 | |
| 302 | /* Slightly unsafe (obj might get removed under us) */ |
| 303 | spin_lock_irqsave(&obj->attribs->hb_spinlock, flags); |
| 304 | |
| 305 | /* Find attribute */ |
| 306 | attrib = hashbin_find(obj->attribs, 0, attrib_name); |
| 307 | if (attrib == NULL) { |
| 308 | IRDA_WARNING("%s: Unable to find attribute: %s\n", |
| 309 | __FUNCTION__, attrib_name); |
| 310 | spin_unlock_irqrestore(&obj->attribs->hb_spinlock, flags); |
| 311 | return -1; |
| 312 | } |
| 313 | |
| 314 | if ( attrib->value->type != new_value->type) { |
| 315 | IRDA_DEBUG( 0, "%s(), changing value type not allowed!\n", |
| 316 | __FUNCTION__); |
| 317 | spin_unlock_irqrestore(&obj->attribs->hb_spinlock, flags); |
| 318 | return -1; |
| 319 | } |
| 320 | |
| 321 | /* Delete old value */ |
| 322 | irias_delete_value(attrib->value); |
| 323 | |
| 324 | /* Insert new value */ |
| 325 | attrib->value = new_value; |
| 326 | |
| 327 | /* Success */ |
| 328 | spin_unlock_irqrestore(&obj->attribs->hb_spinlock, flags); |
| 329 | return 0; |
| 330 | } |
| 331 | EXPORT_SYMBOL(irias_object_change_attribute); |
| 332 | |
| 333 | /* |
| 334 | * Function irias_object_add_integer_attrib (obj, name, value) |
| 335 | * |
| 336 | * Add an integer attribute to an LM-IAS object |
| 337 | * |
| 338 | */ |
| 339 | void irias_add_integer_attrib(struct ias_object *obj, char *name, int value, |
| 340 | int owner) |
| 341 | { |
| 342 | struct ias_attrib *attrib; |
| 343 | |
| 344 | IRDA_ASSERT(obj != NULL, return;); |
| 345 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); |
| 346 | IRDA_ASSERT(name != NULL, return;); |
| 347 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 348 | attrib = kzalloc(sizeof(struct ias_attrib), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | if (attrib == NULL) { |
| 350 | IRDA_WARNING("%s: Unable to allocate attribute!\n", |
| 351 | __FUNCTION__); |
| 352 | return; |
| 353 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
| 355 | attrib->magic = IAS_ATTRIB_MAGIC; |
| 356 | attrib->name = strndup(name, IAS_MAX_ATTRIBNAME); |
| 357 | |
| 358 | /* Insert value */ |
| 359 | attrib->value = irias_new_integer_value(value); |
| 360 | |
| 361 | irias_add_attrib(obj, attrib, owner); |
| 362 | } |
| 363 | EXPORT_SYMBOL(irias_add_integer_attrib); |
| 364 | |
| 365 | /* |
| 366 | * Function irias_add_octseq_attrib (obj, name, octet_seq, len) |
| 367 | * |
| 368 | * Add a octet sequence attribute to an LM-IAS object |
| 369 | * |
| 370 | */ |
| 371 | |
| 372 | void irias_add_octseq_attrib(struct ias_object *obj, char *name, __u8 *octets, |
| 373 | int len, int owner) |
| 374 | { |
| 375 | struct ias_attrib *attrib; |
| 376 | |
| 377 | IRDA_ASSERT(obj != NULL, return;); |
| 378 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); |
| 379 | |
| 380 | IRDA_ASSERT(name != NULL, return;); |
| 381 | IRDA_ASSERT(octets != NULL, return;); |
| 382 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 383 | attrib = kzalloc(sizeof(struct ias_attrib), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | if (attrib == NULL) { |
| 385 | IRDA_WARNING("%s: Unable to allocate attribute!\n", |
| 386 | __FUNCTION__); |
| 387 | return; |
| 388 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
| 390 | attrib->magic = IAS_ATTRIB_MAGIC; |
| 391 | attrib->name = strndup(name, IAS_MAX_ATTRIBNAME); |
| 392 | |
| 393 | attrib->value = irias_new_octseq_value( octets, len); |
| 394 | |
| 395 | irias_add_attrib(obj, attrib, owner); |
| 396 | } |
| 397 | EXPORT_SYMBOL(irias_add_octseq_attrib); |
| 398 | |
| 399 | /* |
| 400 | * Function irias_object_add_string_attrib (obj, string) |
| 401 | * |
| 402 | * Add a string attribute to an LM-IAS object |
| 403 | * |
| 404 | */ |
| 405 | void irias_add_string_attrib(struct ias_object *obj, char *name, char *value, |
| 406 | int owner) |
| 407 | { |
| 408 | struct ias_attrib *attrib; |
| 409 | |
| 410 | IRDA_ASSERT(obj != NULL, return;); |
| 411 | IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); |
| 412 | |
| 413 | IRDA_ASSERT(name != NULL, return;); |
| 414 | IRDA_ASSERT(value != NULL, return;); |
| 415 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 416 | attrib = kzalloc(sizeof( struct ias_attrib), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | if (attrib == NULL) { |
| 418 | IRDA_WARNING("%s: Unable to allocate attribute!\n", |
| 419 | __FUNCTION__); |
| 420 | return; |
| 421 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
| 423 | attrib->magic = IAS_ATTRIB_MAGIC; |
| 424 | attrib->name = strndup(name, IAS_MAX_ATTRIBNAME); |
| 425 | |
| 426 | attrib->value = irias_new_string_value(value); |
| 427 | |
| 428 | irias_add_attrib(obj, attrib, owner); |
| 429 | } |
| 430 | EXPORT_SYMBOL(irias_add_string_attrib); |
| 431 | |
| 432 | /* |
| 433 | * Function irias_new_integer_value (integer) |
| 434 | * |
| 435 | * Create new IAS integer value |
| 436 | * |
| 437 | */ |
| 438 | struct ias_value *irias_new_integer_value(int integer) |
| 439 | { |
| 440 | struct ias_value *value; |
| 441 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 442 | value = kzalloc(sizeof(struct ias_value), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | if (value == NULL) { |
| 444 | IRDA_WARNING("%s: Unable to kmalloc!\n", __FUNCTION__); |
| 445 | return NULL; |
| 446 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | |
| 448 | value->type = IAS_INTEGER; |
| 449 | value->len = 4; |
| 450 | value->t.integer = integer; |
| 451 | |
| 452 | return value; |
| 453 | } |
| 454 | EXPORT_SYMBOL(irias_new_integer_value); |
| 455 | |
| 456 | /* |
| 457 | * Function irias_new_string_value (string) |
| 458 | * |
| 459 | * Create new IAS string value |
| 460 | * |
| 461 | * Per IrLMP 1.1, 4.3.3.2, strings are up to 256 chars - Jean II |
| 462 | */ |
| 463 | struct ias_value *irias_new_string_value(char *string) |
| 464 | { |
| 465 | struct ias_value *value; |
| 466 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 467 | value = kzalloc(sizeof(struct ias_value), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | if (value == NULL) { |
| 469 | IRDA_WARNING("%s: Unable to kmalloc!\n", __FUNCTION__); |
| 470 | return NULL; |
| 471 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | |
| 473 | value->type = IAS_STRING; |
| 474 | value->charset = CS_ASCII; |
| 475 | value->t.string = strndup(string, IAS_MAX_STRING); |
| 476 | value->len = strlen(value->t.string); |
| 477 | |
| 478 | return value; |
| 479 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
| 481 | /* |
| 482 | * Function irias_new_octseq_value (octets, len) |
| 483 | * |
| 484 | * Create new IAS octet-sequence value |
| 485 | * |
| 486 | * Per IrLMP 1.1, 4.3.3.2, octet-sequence are up to 1024 bytes - Jean II |
| 487 | */ |
| 488 | struct ias_value *irias_new_octseq_value(__u8 *octseq , int len) |
| 489 | { |
| 490 | struct ias_value *value; |
| 491 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 492 | value = kzalloc(sizeof(struct ias_value), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | if (value == NULL) { |
| 494 | IRDA_WARNING("%s: Unable to kmalloc!\n", __FUNCTION__); |
| 495 | return NULL; |
| 496 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
| 498 | value->type = IAS_OCT_SEQ; |
| 499 | /* Check length */ |
| 500 | if(len > IAS_MAX_OCTET_STRING) |
| 501 | len = IAS_MAX_OCTET_STRING; |
| 502 | value->len = len; |
| 503 | |
| 504 | value->t.oct_seq = kmalloc(len, GFP_ATOMIC); |
| 505 | if (value->t.oct_seq == NULL){ |
| 506 | IRDA_WARNING("%s: Unable to kmalloc!\n", __FUNCTION__); |
| 507 | kfree(value); |
| 508 | return NULL; |
| 509 | } |
| 510 | memcpy(value->t.oct_seq, octseq , len); |
| 511 | return value; |
| 512 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| 514 | struct ias_value *irias_new_missing_value(void) |
| 515 | { |
| 516 | struct ias_value *value; |
| 517 | |
Panagiotis Issaris | 0da974f | 2006-07-21 14:51:30 -0700 | [diff] [blame] | 518 | value = kzalloc(sizeof(struct ias_value), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | if (value == NULL) { |
| 520 | IRDA_WARNING("%s: Unable to kmalloc!\n", __FUNCTION__); |
| 521 | return NULL; |
| 522 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
| 524 | value->type = IAS_MISSING; |
| 525 | value->len = 0; |
| 526 | |
| 527 | return value; |
| 528 | } |
| 529 | |
| 530 | /* |
| 531 | * Function irias_delete_value (value) |
| 532 | * |
| 533 | * Delete IAS value |
| 534 | * |
| 535 | */ |
| 536 | void irias_delete_value(struct ias_value *value) |
| 537 | { |
| 538 | IRDA_DEBUG(4, "%s()\n", __FUNCTION__); |
| 539 | |
| 540 | IRDA_ASSERT(value != NULL, return;); |
| 541 | |
| 542 | switch (value->type) { |
| 543 | case IAS_INTEGER: /* Fallthrough */ |
| 544 | case IAS_MISSING: |
| 545 | /* No need to deallocate */ |
| 546 | break; |
| 547 | case IAS_STRING: |
Jesper Juhl | a51482b | 2005-11-08 09:41:34 -0800 | [diff] [blame] | 548 | /* Deallocate string */ |
| 549 | kfree(value->t.string); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | break; |
| 551 | case IAS_OCT_SEQ: |
Jesper Juhl | a51482b | 2005-11-08 09:41:34 -0800 | [diff] [blame] | 552 | /* Deallocate byte stream */ |
| 553 | kfree(value->t.oct_seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | break; |
| 555 | default: |
| 556 | IRDA_DEBUG(0, "%s(), Unknown value type!\n", __FUNCTION__); |
| 557 | break; |
| 558 | } |
| 559 | kfree(value); |
| 560 | } |
| 561 | EXPORT_SYMBOL(irias_delete_value); |