Blame view
net/irda/irias_object.c
13.4 KB
1da177e4c Linux-2.6.12-rc2 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 |
/********************************************************************* * * Filename: irias_object.c * Version: 0.3 * Description: IAS object database and functions * Status: Experimental. * Author: Dag Brattli <dagb@cs.uit.no> * Created at: Thu Oct 1 22:50:04 1998 * Modified at: Wed Dec 15 11:23:16 1999 * Modified by: Dag Brattli <dagb@cs.uit.no> * * Copyright (c) 1998-1999 Dag Brattli, All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * |
96de0e252 Convert files to ... |
19 |
* Neither Dag Brattli nor University of Tromsø admit liability nor |
1da177e4c Linux-2.6.12-rc2 |
20 21 22 23 |
* provide warranty for any of this software. This material is * provided "AS-IS" and at no charge. * ********************************************************************/ |
5a0e3ad6a include cleanup: ... |
24 |
#include <linux/slab.h> |
1da177e4c Linux-2.6.12-rc2 |
25 26 27 28 29 30 31 32 33 34 35 36 37 |
#include <linux/string.h> #include <linux/socket.h> #include <linux/module.h> #include <net/irda/irda.h> #include <net/irda/irias_object.h> hashbin_t *irias_objects; /* * Used when a missing value needs to be returned */ struct ias_value irias_missing = { IAS_MISSING, 0, 0, 0, {0}}; |
1da177e4c Linux-2.6.12-rc2 |
38 39 40 41 42 43 44 45 46 |
/* * Function ias_new_object (name, id) * * Create a new IAS object * */ struct ias_object *irias_new_object( char *name, int id) { |
6819bc2e1 [NET] IRDA: Fix w... |
47 |
struct ias_object *obj; |
1da177e4c Linux-2.6.12-rc2 |
48 |
|
0dc47877a net: replace rema... |
49 50 |
IRDA_DEBUG( 4, "%s() ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
51 |
|
0da974f4f [NET]: Conversion... |
52 |
obj = kzalloc(sizeof(struct ias_object), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
53 54 55 |
if (obj == NULL) { IRDA_WARNING("%s(), Unable to allocate object! ", |
0dc47877a net: replace rema... |
56 |
__func__); |
1da177e4c Linux-2.6.12-rc2 |
57 58 |
return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
59 60 |
obj->magic = IAS_OBJECT_MAGIC; |
1e66df3ee add kstrndup |
61 |
obj->name = kstrndup(name, IAS_MAX_CLASSNAME, GFP_ATOMIC); |
bb5aa4273 [IRDA]: handle ou... |
62 63 64 |
if (!obj->name) { IRDA_WARNING("%s(), Unable to allocate name! ", |
0dc47877a net: replace rema... |
65 |
__func__); |
bb5aa4273 [IRDA]: handle ou... |
66 67 68 |
kfree(obj); return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
69 70 71 72 73 74 75 76 77 78 |
obj->id = id; /* Locking notes : the attrib spinlock has lower precendence * than the objects spinlock. Never grap the objects spinlock * while holding any attrib spinlock (risk of deadlock). Jean II */ obj->attribs = hashbin_new(HB_LOCK); if (obj->attribs == NULL) { IRDA_WARNING("%s(), Unable to allocate attribs! ", |
0dc47877a net: replace rema... |
79 |
__func__); |
bb5aa4273 [IRDA]: handle ou... |
80 |
kfree(obj->name); |
1da177e4c Linux-2.6.12-rc2 |
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 |
kfree(obj); return NULL; } return obj; } EXPORT_SYMBOL(irias_new_object); /* * Function irias_delete_attrib (attrib) * * Delete given attribute and deallocate all its memory * */ static void __irias_delete_attrib(struct ias_attrib *attrib) { IRDA_ASSERT(attrib != NULL, return;); IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC, return;); |
a51482bde [NET]: kfree cleanup |
99 |
kfree(attrib->name); |
1da177e4c Linux-2.6.12-rc2 |
100 101 102 103 104 105 106 107 108 109 110 |
irias_delete_value(attrib->value); attrib->magic = ~IAS_ATTRIB_MAGIC; kfree(attrib); } void __irias_delete_object(struct ias_object *obj) { IRDA_ASSERT(obj != NULL, return;); IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); |
a51482bde [NET]: kfree cleanup |
111 |
kfree(obj->name); |
1da177e4c Linux-2.6.12-rc2 |
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 |
hashbin_delete(obj->attribs, (FREE_FUNC) __irias_delete_attrib); obj->magic = ~IAS_OBJECT_MAGIC; kfree(obj); } /* * Function irias_delete_object (obj) * * Remove object from hashbin and deallocate all attributes associated with * with this object and the object itself * */ int irias_delete_object(struct ias_object *obj) { struct ias_object *node; IRDA_ASSERT(obj != NULL, return -1;); IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -1;); /* Remove from list */ node = hashbin_remove_this(irias_objects, (irda_queue_t *) obj); if (!node) IRDA_DEBUG( 0, "%s(), object already removed! ", |
0dc47877a net: replace rema... |
139 |
__func__); |
1da177e4c Linux-2.6.12-rc2 |
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 |
/* Destroy */ __irias_delete_object(obj); return 0; } EXPORT_SYMBOL(irias_delete_object); /* * Function irias_delete_attrib (obj) * * Remove attribute from hashbin and, if it was the last attribute of * the object, remove the object as well. * */ int irias_delete_attrib(struct ias_object *obj, struct ias_attrib *attrib, int cleanobject) { struct ias_attrib *node; IRDA_ASSERT(obj != NULL, return -1;); IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return -1;); IRDA_ASSERT(attrib != NULL, return -1;); /* Remove attribute from object */ node = hashbin_remove_this(obj->attribs, (irda_queue_t *) attrib); if (!node) return 0; /* Already removed or non-existent */ /* Deallocate attribute */ __irias_delete_attrib(node); /* Check if object has still some attributes, destroy it if none. * At first glance, this look dangerous, as the kernel reference * various IAS objects. However, we only use this function on * user attributes, not kernel attributes, so there is no risk * of deleting a kernel object this way. Jean II */ node = (struct ias_attrib *) hashbin_get_first(obj->attribs); if (cleanobject && !node) irias_delete_object(obj); return 0; } /* * Function irias_insert_object (obj) * * Insert an object into the LM-IAS database * */ void irias_insert_object(struct ias_object *obj) { IRDA_ASSERT(obj != NULL, return;); IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); hashbin_insert(irias_objects, (irda_queue_t *) obj, 0, obj->name); } EXPORT_SYMBOL(irias_insert_object); /* * Function irias_find_object (name) * * Find object with given name * */ struct ias_object *irias_find_object(char *name) { IRDA_ASSERT(name != NULL, return NULL;); /* Unsafe (locking), object might change */ return hashbin_lock_find(irias_objects, 0, name); } EXPORT_SYMBOL(irias_find_object); /* * Function irias_find_attrib (obj, name) * * Find named attribute in object * */ struct ias_attrib *irias_find_attrib(struct ias_object *obj, char *name) { struct ias_attrib *attrib; IRDA_ASSERT(obj != NULL, return NULL;); IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return NULL;); IRDA_ASSERT(name != NULL, return NULL;); attrib = hashbin_lock_find(obj->attribs, 0, name); if (attrib == NULL) return NULL; /* Unsafe (locking), attrib might change */ return attrib; } |
1da177e4c Linux-2.6.12-rc2 |
235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 |
/* * Function irias_add_attribute (obj, attrib) * * Add attribute to object * */ static void irias_add_attrib(struct ias_object *obj, struct ias_attrib *attrib, int owner) { IRDA_ASSERT(obj != NULL, return;); IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); IRDA_ASSERT(attrib != NULL, return;); IRDA_ASSERT(attrib->magic == IAS_ATTRIB_MAGIC, return;); /* Set if attrib is owned by kernel or user space */ attrib->value->owner = owner; hashbin_insert(obj->attribs, (irda_queue_t *) attrib, 0, attrib->name); } /* * Function irias_object_change_attribute (obj_name, attrib_name, new_value) * * Change the value of an objects attribute. * */ int irias_object_change_attribute(char *obj_name, char *attrib_name, struct ias_value *new_value) { struct ias_object *obj; struct ias_attrib *attrib; unsigned long flags; /* Find object */ obj = hashbin_lock_find(irias_objects, 0, obj_name); if (obj == NULL) { |
0dc47877a net: replace rema... |
273 274 |
IRDA_WARNING("%s: Unable to find object: %s ", __func__, |
1da177e4c Linux-2.6.12-rc2 |
275 276 277 278 279 280 281 282 283 284 285 286 |
obj_name); return -1; } /* Slightly unsafe (obj might get removed under us) */ spin_lock_irqsave(&obj->attribs->hb_spinlock, flags); /* Find attribute */ attrib = hashbin_find(obj->attribs, 0, attrib_name); if (attrib == NULL) { IRDA_WARNING("%s: Unable to find attribute: %s ", |
0dc47877a net: replace rema... |
287 |
__func__, attrib_name); |
1da177e4c Linux-2.6.12-rc2 |
288 289 290 291 292 293 294 |
spin_unlock_irqrestore(&obj->attribs->hb_spinlock, flags); return -1; } if ( attrib->value->type != new_value->type) { IRDA_DEBUG( 0, "%s(), changing value type not allowed! ", |
0dc47877a net: replace rema... |
295 |
__func__); |
1da177e4c Linux-2.6.12-rc2 |
296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 |
spin_unlock_irqrestore(&obj->attribs->hb_spinlock, flags); return -1; } /* Delete old value */ irias_delete_value(attrib->value); /* Insert new value */ attrib->value = new_value; /* Success */ spin_unlock_irqrestore(&obj->attribs->hb_spinlock, flags); return 0; } EXPORT_SYMBOL(irias_object_change_attribute); /* * Function irias_object_add_integer_attrib (obj, name, value) * * Add an integer attribute to an LM-IAS object * */ void irias_add_integer_attrib(struct ias_object *obj, char *name, int value, int owner) { struct ias_attrib *attrib; IRDA_ASSERT(obj != NULL, return;); IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); IRDA_ASSERT(name != NULL, return;); |
0da974f4f [NET]: Conversion... |
326 |
attrib = kzalloc(sizeof(struct ias_attrib), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
327 328 329 |
if (attrib == NULL) { IRDA_WARNING("%s: Unable to allocate attribute! ", |
0dc47877a net: replace rema... |
330 |
__func__); |
1da177e4c Linux-2.6.12-rc2 |
331 332 |
return; } |
1da177e4c Linux-2.6.12-rc2 |
333 334 |
attrib->magic = IAS_ATTRIB_MAGIC; |
1e66df3ee add kstrndup |
335 |
attrib->name = kstrndup(name, IAS_MAX_ATTRIBNAME, GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
336 337 338 |
/* Insert value */ attrib->value = irias_new_integer_value(value); |
bb5aa4273 [IRDA]: handle ou... |
339 340 341 |
if (!attrib->name || !attrib->value) { IRDA_WARNING("%s: Unable to allocate attribute! ", |
0dc47877a net: replace rema... |
342 |
__func__); |
bb5aa4273 [IRDA]: handle ou... |
343 344 345 346 347 348 |
if (attrib->value) irias_delete_value(attrib->value); kfree(attrib->name); kfree(attrib); return; } |
1da177e4c Linux-2.6.12-rc2 |
349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 |
irias_add_attrib(obj, attrib, owner); } EXPORT_SYMBOL(irias_add_integer_attrib); /* * Function irias_add_octseq_attrib (obj, name, octet_seq, len) * * Add a octet sequence attribute to an LM-IAS object * */ void irias_add_octseq_attrib(struct ias_object *obj, char *name, __u8 *octets, int len, int owner) { struct ias_attrib *attrib; IRDA_ASSERT(obj != NULL, return;); IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); IRDA_ASSERT(name != NULL, return;); IRDA_ASSERT(octets != NULL, return;); |
0da974f4f [NET]: Conversion... |
371 |
attrib = kzalloc(sizeof(struct ias_attrib), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
372 373 374 |
if (attrib == NULL) { IRDA_WARNING("%s: Unable to allocate attribute! ", |
0dc47877a net: replace rema... |
375 |
__func__); |
1da177e4c Linux-2.6.12-rc2 |
376 377 |
return; } |
1da177e4c Linux-2.6.12-rc2 |
378 379 |
attrib->magic = IAS_ATTRIB_MAGIC; |
1e66df3ee add kstrndup |
380 |
attrib->name = kstrndup(name, IAS_MAX_ATTRIBNAME, GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
381 382 |
attrib->value = irias_new_octseq_value( octets, len); |
bb5aa4273 [IRDA]: handle ou... |
383 384 385 |
if (!attrib->name || !attrib->value) { IRDA_WARNING("%s: Unable to allocate attribute! ", |
0dc47877a net: replace rema... |
386 |
__func__); |
bb5aa4273 [IRDA]: handle ou... |
387 388 389 390 391 392 |
if (attrib->value) irias_delete_value(attrib->value); kfree(attrib->name); kfree(attrib); return; } |
1da177e4c Linux-2.6.12-rc2 |
393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 |
irias_add_attrib(obj, attrib, owner); } EXPORT_SYMBOL(irias_add_octseq_attrib); /* * Function irias_object_add_string_attrib (obj, string) * * Add a string attribute to an LM-IAS object * */ void irias_add_string_attrib(struct ias_object *obj, char *name, char *value, int owner) { struct ias_attrib *attrib; IRDA_ASSERT(obj != NULL, return;); IRDA_ASSERT(obj->magic == IAS_OBJECT_MAGIC, return;); IRDA_ASSERT(name != NULL, return;); IRDA_ASSERT(value != NULL, return;); |
0da974f4f [NET]: Conversion... |
414 |
attrib = kzalloc(sizeof( struct ias_attrib), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
415 416 417 |
if (attrib == NULL) { IRDA_WARNING("%s: Unable to allocate attribute! ", |
0dc47877a net: replace rema... |
418 |
__func__); |
1da177e4c Linux-2.6.12-rc2 |
419 420 |
return; } |
1da177e4c Linux-2.6.12-rc2 |
421 422 |
attrib->magic = IAS_ATTRIB_MAGIC; |
1e66df3ee add kstrndup |
423 |
attrib->name = kstrndup(name, IAS_MAX_ATTRIBNAME, GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
424 425 |
attrib->value = irias_new_string_value(value); |
bb5aa4273 [IRDA]: handle ou... |
426 427 428 |
if (!attrib->name || !attrib->value) { IRDA_WARNING("%s: Unable to allocate attribute! ", |
0dc47877a net: replace rema... |
429 |
__func__); |
bb5aa4273 [IRDA]: handle ou... |
430 431 432 433 434 435 |
if (attrib->value) irias_delete_value(attrib->value); kfree(attrib->name); kfree(attrib); return; } |
1da177e4c Linux-2.6.12-rc2 |
436 437 438 439 440 441 442 443 444 445 446 447 448 449 |
irias_add_attrib(obj, attrib, owner); } EXPORT_SYMBOL(irias_add_string_attrib); /* * Function irias_new_integer_value (integer) * * Create new IAS integer value * */ struct ias_value *irias_new_integer_value(int integer) { struct ias_value *value; |
0da974f4f [NET]: Conversion... |
450 |
value = kzalloc(sizeof(struct ias_value), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
451 |
if (value == NULL) { |
0dc47877a net: replace rema... |
452 453 |
IRDA_WARNING("%s: Unable to kmalloc! ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
454 455 |
return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 |
value->type = IAS_INTEGER; value->len = 4; value->t.integer = integer; return value; } EXPORT_SYMBOL(irias_new_integer_value); /* * Function irias_new_string_value (string) * * Create new IAS string value * * Per IrLMP 1.1, 4.3.3.2, strings are up to 256 chars - Jean II */ struct ias_value *irias_new_string_value(char *string) { struct ias_value *value; |
0da974f4f [NET]: Conversion... |
475 |
value = kzalloc(sizeof(struct ias_value), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
476 |
if (value == NULL) { |
0dc47877a net: replace rema... |
477 478 |
IRDA_WARNING("%s: Unable to kmalloc! ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
479 480 |
return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
481 482 483 |
value->type = IAS_STRING; value->charset = CS_ASCII; |
1e66df3ee add kstrndup |
484 |
value->t.string = kstrndup(string, IAS_MAX_STRING, GFP_ATOMIC); |
bb5aa4273 [IRDA]: handle ou... |
485 |
if (!value->t.string) { |
0dc47877a net: replace rema... |
486 487 |
IRDA_WARNING("%s: Unable to kmalloc! ", __func__); |
bb5aa4273 [IRDA]: handle ou... |
488 489 490 |
kfree(value); return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
491 492 493 494 |
value->len = strlen(value->t.string); return value; } |
1da177e4c Linux-2.6.12-rc2 |
495 496 497 498 499 500 501 502 503 504 505 |
/* * Function irias_new_octseq_value (octets, len) * * Create new IAS octet-sequence value * * Per IrLMP 1.1, 4.3.3.2, octet-sequence are up to 1024 bytes - Jean II */ struct ias_value *irias_new_octseq_value(__u8 *octseq , int len) { struct ias_value *value; |
0da974f4f [NET]: Conversion... |
506 |
value = kzalloc(sizeof(struct ias_value), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
507 |
if (value == NULL) { |
0dc47877a net: replace rema... |
508 509 |
IRDA_WARNING("%s: Unable to kmalloc! ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
510 511 |
return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
512 513 514 515 516 517 |
value->type = IAS_OCT_SEQ; /* Check length */ if(len > IAS_MAX_OCTET_STRING) len = IAS_MAX_OCTET_STRING; value->len = len; |
b3ab09f9e [IRDA]: Use kmemd... |
518 |
value->t.oct_seq = kmemdup(octseq, len, GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
519 |
if (value->t.oct_seq == NULL){ |
0dc47877a net: replace rema... |
520 521 |
IRDA_WARNING("%s: Unable to kmalloc! ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
522 523 524 |
kfree(value); return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
525 526 |
return value; } |
1da177e4c Linux-2.6.12-rc2 |
527 528 529 530 |
struct ias_value *irias_new_missing_value(void) { struct ias_value *value; |
0da974f4f [NET]: Conversion... |
531 |
value = kzalloc(sizeof(struct ias_value), GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
532 |
if (value == NULL) { |
0dc47877a net: replace rema... |
533 534 |
IRDA_WARNING("%s: Unable to kmalloc! ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
535 536 |
return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
537 538 |
value->type = IAS_MISSING; |
1da177e4c Linux-2.6.12-rc2 |
539 540 541 542 543 544 545 546 547 548 549 550 |
return value; } /* * Function irias_delete_value (value) * * Delete IAS value * */ void irias_delete_value(struct ias_value *value) { |
0dc47877a net: replace rema... |
551 552 |
IRDA_DEBUG(4, "%s() ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
553 554 555 556 557 558 559 560 561 |
IRDA_ASSERT(value != NULL, return;); switch (value->type) { case IAS_INTEGER: /* Fallthrough */ case IAS_MISSING: /* No need to deallocate */ break; case IAS_STRING: |
a51482bde [NET]: kfree cleanup |
562 563 |
/* Deallocate string */ kfree(value->t.string); |
1da177e4c Linux-2.6.12-rc2 |
564 565 |
break; case IAS_OCT_SEQ: |
a51482bde [NET]: kfree cleanup |
566 567 |
/* Deallocate byte stream */ kfree(value->t.oct_seq); |
1da177e4c Linux-2.6.12-rc2 |
568 569 |
break; default: |
0dc47877a net: replace rema... |
570 571 |
IRDA_DEBUG(0, "%s(), Unknown value type! ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
572 573 574 575 576 |
break; } kfree(value); } EXPORT_SYMBOL(irias_delete_value); |