1 /* 2 * Copyright (c) 2014, STMicroelectronics International N.V. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 #include <stdlib.h> 28 #include <string.h> 29 30 #include <tee_api.h> 31 #include <utee_syscalls.h> 32 33 #include <assert.h> 34 35 #define TEE_USAGE_DEFAULT 0xffffffff 36 37 #define TEE_ATTR_BIT_VALUE (1 << 29) 38 #define TEE_ATTR_BIT_PROTECTED (1 << 28) 39 40 /* Data and Key Storage API - Generic Object Functions */ 41 /* 42 * Use of this function is deprecated 43 * new code SHOULD use the TEE_GetObjectInfo1 function instead 44 * These functions will be removed at some future major revision of 45 * this specification 46 */ 47 void TEE_GetObjectInfo(TEE_ObjectHandle object, TEE_ObjectInfo *objectInfo) 48 { 49 TEE_Result res; 50 51 res = utee_cryp_obj_get_info((uint32_t)object, objectInfo); 52 53 if (res != TEE_SUCCESS) 54 TEE_Panic(res); 55 56 if (objectInfo->objectType == TEE_TYPE_CORRUPTED_OBJECT) { 57 objectInfo->keySize = 0; 58 objectInfo->maxKeySize = 0; 59 objectInfo->objectUsage = 0; 60 objectInfo->dataSize = 0; 61 objectInfo->dataPosition = 0; 62 objectInfo->handleFlags = 0; 63 } 64 } 65 66 TEE_Result TEE_GetObjectInfo1(TEE_ObjectHandle object, TEE_ObjectInfo *objectInfo) 67 { 68 TEE_Result res; 69 70 res = utee_cryp_obj_get_info((uint32_t)object, objectInfo); 71 72 if (res == TEE_ERROR_CORRUPT_OBJECT) { 73 res = utee_storage_obj_del(object); 74 if (res != TEE_SUCCESS) 75 TEE_Panic(0); 76 return TEE_ERROR_CORRUPT_OBJECT; 77 } 78 79 if (res != TEE_SUCCESS && res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 80 TEE_Panic(res); 81 82 return res; 83 } 84 85 /* 86 * Use of this function is deprecated 87 * new code SHOULD use the TEE_RestrictObjectUsage1 function instead 88 * These functions will be removed at some future major revision of 89 * this specification 90 */ 91 void TEE_RestrictObjectUsage(TEE_ObjectHandle object, uint32_t objectUsage) 92 { 93 TEE_Result res; 94 TEE_ObjectInfo objectInfo; 95 96 res = utee_cryp_obj_get_info((uint32_t)object, &objectInfo); 97 if (objectInfo.objectType == TEE_TYPE_CORRUPTED_OBJECT) 98 return; 99 100 res = TEE_RestrictObjectUsage1(object, objectUsage); 101 102 if (res != TEE_SUCCESS) 103 TEE_Panic(0); 104 } 105 106 TEE_Result TEE_RestrictObjectUsage1(TEE_ObjectHandle object, uint32_t objectUsage) 107 { 108 TEE_Result res; 109 110 res = utee_cryp_obj_restrict_usage((uint32_t)object, objectUsage); 111 112 if (res == TEE_ERROR_CORRUPT_OBJECT) { 113 res = utee_storage_obj_del(object); 114 if (res != TEE_SUCCESS) 115 TEE_Panic(0); 116 return TEE_ERROR_CORRUPT_OBJECT; 117 } 118 119 if (res != TEE_SUCCESS && res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 120 TEE_Panic(0); 121 122 return res; 123 } 124 125 TEE_Result TEE_GetObjectBufferAttribute(TEE_ObjectHandle object, 126 uint32_t attributeID, void *buffer, 127 uint32_t *size) 128 { 129 TEE_Result res; 130 TEE_ObjectInfo info; 131 132 res = utee_cryp_obj_get_info((uint32_t)object, &info); 133 if (res != TEE_SUCCESS) 134 TEE_Panic(0); 135 136 if ((info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) 137 TEE_Panic(0); 138 139 /* This function only supports reference attributes */ 140 if ((attributeID & TEE_ATTR_BIT_VALUE) != 0) 141 TEE_Panic(0); 142 143 res = utee_cryp_obj_get_attr((uint32_t)object, 144 attributeID, buffer, size); 145 146 if (res != TEE_SUCCESS && 147 res != TEE_ERROR_ITEM_NOT_FOUND && 148 res != TEE_ERROR_SHORT_BUFFER && 149 res != TEE_ERROR_CORRUPT_OBJECT && 150 res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 151 TEE_Panic(0); 152 153 return res; 154 } 155 156 TEE_Result TEE_GetObjectValueAttribute(TEE_ObjectHandle object, 157 uint32_t attributeID, uint32_t *a, 158 uint32_t *b) 159 { 160 TEE_Result res; 161 TEE_ObjectInfo info; 162 uint32_t buf[2]; 163 uint32_t size = sizeof(buf); 164 165 res = utee_cryp_obj_get_info((uint32_t)object, &info); 166 if (res != TEE_SUCCESS) 167 TEE_Panic(0); 168 169 if ((info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) 170 TEE_Panic(0); 171 172 /* This function only supports value attributes */ 173 if ((attributeID & TEE_ATTR_BIT_VALUE) == 0) 174 TEE_Panic(0); 175 176 res = utee_cryp_obj_get_attr((uint32_t)object, 177 attributeID, buf, &size); 178 179 if (res != TEE_SUCCESS && 180 res != TEE_ERROR_ITEM_NOT_FOUND && 181 res != TEE_ERROR_CORRUPT_OBJECT && 182 res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 183 TEE_Panic(0); 184 185 if (size != sizeof(buf)) 186 TEE_Panic(0); 187 188 *a = buf[0]; 189 *b = buf[1]; 190 191 return res; 192 } 193 194 void TEE_CloseObject(TEE_ObjectHandle object) 195 { 196 TEE_Result res; 197 198 if (object == TEE_HANDLE_NULL) 199 return; 200 201 res = utee_cryp_obj_close((uint32_t)object); 202 if (res != TEE_SUCCESS) 203 TEE_Panic(0); 204 } 205 206 /* Data and Key Storage API - Transient Object Functions */ 207 208 TEE_Result TEE_AllocateTransientObject(TEE_ObjectType objectType, 209 uint32_t maxKeySize, 210 TEE_ObjectHandle *object) 211 { 212 TEE_Result res; 213 uint32_t obj; 214 215 res = utee_cryp_obj_alloc(objectType, maxKeySize, &obj); 216 217 if (res != TEE_SUCCESS && 218 res != TEE_ERROR_OUT_OF_MEMORY && 219 res != TEE_ERROR_NOT_SUPPORTED) 220 TEE_Panic(0); 221 222 if (res == TEE_SUCCESS) 223 *object = (TEE_ObjectHandle) obj; 224 225 return res; 226 } 227 228 void TEE_FreeTransientObject(TEE_ObjectHandle object) 229 { 230 TEE_Result res; 231 TEE_ObjectInfo info; 232 233 if (object == TEE_HANDLE_NULL) 234 return; 235 236 res = utee_cryp_obj_get_info((uint32_t)object, &info); 237 if (res != TEE_SUCCESS) 238 TEE_Panic(0); 239 240 if ((info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0) 241 TEE_Panic(0); 242 243 res = utee_cryp_obj_close((uint32_t)object); 244 if (res != TEE_SUCCESS) 245 TEE_Panic(0); 246 } 247 248 void TEE_ResetTransientObject(TEE_ObjectHandle object) 249 { 250 TEE_Result res; 251 TEE_ObjectInfo info; 252 253 if (object == TEE_HANDLE_NULL) 254 return; 255 256 res = utee_cryp_obj_get_info((uint32_t)object, &info); 257 if (res != TEE_SUCCESS) 258 TEE_Panic(0); 259 260 if ((info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0) 261 TEE_Panic(0); 262 263 res = utee_cryp_obj_reset((uint32_t)object); 264 if (res != TEE_SUCCESS) 265 TEE_Panic(0); 266 } 267 268 TEE_Result TEE_PopulateTransientObject(TEE_ObjectHandle object, 269 TEE_Attribute *attrs, 270 uint32_t attrCount) 271 { 272 TEE_Result res; 273 TEE_ObjectInfo info; 274 275 res = utee_cryp_obj_get_info((uint32_t)object, &info); 276 if (res != TEE_SUCCESS) 277 TEE_Panic(0); 278 279 /* Must be a transient object */ 280 if ((info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0) 281 TEE_Panic(0); 282 283 /* Must not be initialized already */ 284 if ((info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) != 0) 285 TEE_Panic(0); 286 287 res = utee_cryp_obj_populate((uint32_t)object, attrs, attrCount); 288 if (res != TEE_SUCCESS && res != TEE_ERROR_BAD_PARAMETERS) 289 TEE_Panic(res); 290 return res; 291 } 292 293 void TEE_InitRefAttribute(TEE_Attribute *attr, uint32_t attributeID, 294 void *buffer, uint32_t length) 295 { 296 if (attr == NULL) 297 TEE_Panic(0); 298 if ((attributeID & TEE_ATTR_BIT_VALUE) != 0) 299 TEE_Panic(0); 300 attr->attributeID = attributeID; 301 attr->content.ref.buffer = buffer; 302 attr->content.ref.length = length; 303 } 304 305 void TEE_InitValueAttribute(TEE_Attribute *attr, uint32_t attributeID, 306 uint32_t a, uint32_t b) 307 { 308 if (attr == NULL) 309 TEE_Panic(0); 310 if ((attributeID & TEE_ATTR_BIT_VALUE) == 0) 311 TEE_Panic(0); 312 attr->attributeID = attributeID; 313 attr->content.value.a = a; 314 attr->content.value.b = b; 315 } 316 317 /* 318 * Use of this function is deprecated 319 * new code SHOULD use the TEE_CopyObjectAttributes1 function instead 320 * These functions will be removed at some future major revision of 321 * this specification 322 */ 323 void TEE_CopyObjectAttributes(TEE_ObjectHandle destObject, 324 TEE_ObjectHandle srcObject) 325 { 326 TEE_Result res; 327 TEE_ObjectInfo src_info; 328 329 res = utee_cryp_obj_get_info((uint32_t)srcObject, &src_info); 330 if (src_info.objectType == TEE_TYPE_CORRUPTED_OBJECT) 331 return; 332 333 res = TEE_CopyObjectAttributes1(destObject, srcObject); 334 if (res != TEE_SUCCESS) 335 TEE_Panic(0); 336 } 337 338 TEE_Result TEE_CopyObjectAttributes1(TEE_ObjectHandle destObject, 339 TEE_ObjectHandle srcObject) 340 { 341 TEE_Result res; 342 TEE_ObjectInfo dst_info; 343 TEE_ObjectInfo src_info; 344 345 res = utee_cryp_obj_get_info((uint32_t)destObject, &dst_info); 346 if (res != TEE_SUCCESS) 347 goto err; 348 349 res = utee_cryp_obj_get_info((uint32_t)srcObject, &src_info); 350 if (res != TEE_SUCCESS) 351 goto err; 352 353 if ((src_info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) == 0) 354 TEE_Panic(0); 355 if ((dst_info.handleFlags & TEE_HANDLE_FLAG_PERSISTENT) != 0) 356 TEE_Panic(0); 357 if ((dst_info.handleFlags & TEE_HANDLE_FLAG_INITIALIZED) != 0) 358 TEE_Panic(0); 359 360 res = utee_cryp_obj_copy((uint32_t)destObject, (uint32_t)srcObject); 361 if (res != TEE_SUCCESS) 362 TEE_Panic(0); 363 364 goto out; 365 366 err: 367 if (res == TEE_ERROR_CORRUPT_OBJECT) { 368 res = utee_storage_obj_del(srcObject); 369 if (res != TEE_SUCCESS) 370 TEE_Panic(0); 371 return TEE_ERROR_CORRUPT_OBJECT; 372 } 373 if (res == TEE_ERROR_STORAGE_NOT_AVAILABLE) 374 return res; 375 TEE_Panic(0); 376 out: 377 return TEE_SUCCESS; 378 } 379 380 TEE_Result TEE_GenerateKey(TEE_ObjectHandle object, uint32_t keySize, 381 TEE_Attribute *params, uint32_t paramCount) 382 { 383 TEE_Result res; 384 385 res = utee_cryp_obj_generate_key((uint32_t)object, keySize, 386 params, paramCount); 387 388 if (res != TEE_SUCCESS && res != TEE_ERROR_BAD_PARAMETERS) 389 TEE_Panic(0); 390 391 return res; 392 } 393 394 /* Data and Key Storage API - Persistent Object Functions */ 395 396 TEE_Result TEE_OpenPersistentObject(uint32_t storageID, void *objectID, 397 uint32_t objectIDLen, uint32_t flags, 398 TEE_ObjectHandle *object) 399 { 400 TEE_Result res; 401 402 if (storageID != TEE_STORAGE_PRIVATE) { 403 res = TEE_ERROR_ITEM_NOT_FOUND; 404 goto out; 405 } 406 407 if (!objectID) { 408 res = TEE_ERROR_ITEM_NOT_FOUND; 409 goto out; 410 } 411 412 if (objectIDLen > TEE_OBJECT_ID_MAX_LEN) { 413 res = TEE_ERROR_BAD_PARAMETERS; 414 goto out; 415 } 416 417 if (!object) { 418 res = TEE_ERROR_BAD_PARAMETERS; 419 goto out; 420 } 421 422 res = utee_storage_obj_open(storageID, objectID, objectIDLen, flags, 423 object); 424 425 out: 426 if (res != TEE_SUCCESS && 427 res != TEE_ERROR_ITEM_NOT_FOUND && 428 res != TEE_ERROR_ACCESS_CONFLICT && 429 res != TEE_ERROR_OUT_OF_MEMORY && 430 res != TEE_ERROR_CORRUPT_OBJECT && 431 res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 432 TEE_Panic(0); 433 434 return res; 435 } 436 437 TEE_Result TEE_CreatePersistentObject(uint32_t storageID, void *objectID, 438 uint32_t objectIDLen, uint32_t flags, 439 TEE_ObjectHandle attributes, 440 const void *initialData, 441 uint32_t initialDataLen, 442 TEE_ObjectHandle *object) 443 { 444 TEE_Result res; 445 446 if (storageID != TEE_STORAGE_PRIVATE) { 447 res = TEE_ERROR_ITEM_NOT_FOUND; 448 goto err; 449 } 450 451 if (!objectID) { 452 res = TEE_ERROR_ITEM_NOT_FOUND; 453 goto err; 454 } 455 456 if (objectIDLen > TEE_OBJECT_ID_MAX_LEN) { 457 res = TEE_ERROR_BAD_PARAMETERS; 458 goto err; 459 } 460 461 if (!object) { 462 res = TEE_ERROR_BAD_PARAMETERS; 463 goto err; 464 } 465 466 res = utee_storage_obj_create(storageID, objectID, objectIDLen, flags, 467 attributes, initialData, initialDataLen, 468 object); 469 if (res == TEE_SUCCESS) 470 goto out; 471 err: 472 if (res == TEE_ERROR_ITEM_NOT_FOUND || 473 res == TEE_ERROR_ACCESS_CONFLICT || 474 res == TEE_ERROR_OUT_OF_MEMORY || 475 res == TEE_ERROR_STORAGE_NO_SPACE || 476 res == TEE_ERROR_CORRUPT_OBJECT || 477 res == TEE_ERROR_STORAGE_NOT_AVAILABLE) 478 return res; 479 TEE_Panic(0); 480 out: 481 return TEE_SUCCESS; 482 } 483 484 /* 485 * Use of this function is deprecated 486 * new code SHOULD use the TEE_CloseAndDeletePersistentObject1 function instead 487 * These functions will be removed at some future major revision of 488 * this specification 489 */ 490 void TEE_CloseAndDeletePersistentObject(TEE_ObjectHandle object) 491 { 492 TEE_Result res; 493 494 if (object == TEE_HANDLE_NULL) 495 return; 496 497 res = TEE_CloseAndDeletePersistentObject1(object); 498 499 if (res != TEE_SUCCESS) 500 TEE_Panic(0); 501 } 502 503 TEE_Result TEE_CloseAndDeletePersistentObject1(TEE_ObjectHandle object) 504 { 505 TEE_Result res; 506 507 if (object == TEE_HANDLE_NULL) 508 return TEE_ERROR_STORAGE_NOT_AVAILABLE; 509 510 res = utee_storage_obj_del(object); 511 512 if (res != TEE_SUCCESS && res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 513 TEE_Panic(0); 514 515 return res; 516 } 517 518 519 TEE_Result TEE_RenamePersistentObject(TEE_ObjectHandle object, 520 const void *newObjectID, 521 uint32_t newObjectIDLen) 522 { 523 TEE_Result res; 524 525 if (object == TEE_HANDLE_NULL) 526 return TEE_ERROR_ITEM_NOT_FOUND; 527 528 if (newObjectID == NULL) 529 return TEE_ERROR_BAD_PARAMETERS; 530 531 if (newObjectIDLen > TEE_OBJECT_ID_MAX_LEN) 532 TEE_Panic(0); 533 534 res = utee_storage_obj_rename(object, newObjectID, newObjectIDLen); 535 536 if (res != TEE_SUCCESS && res != TEE_ERROR_ACCESS_CONFLICT) 537 TEE_Panic(0); 538 539 return res; 540 } 541 542 TEE_Result TEE_AllocatePersistentObjectEnumerator(TEE_ObjectEnumHandle * 543 objectEnumerator) 544 { 545 TEE_Result res; 546 547 if (objectEnumerator == NULL) 548 return TEE_ERROR_BAD_PARAMETERS; 549 550 res = utee_storage_alloc_enum(objectEnumerator); 551 552 if (res != TEE_SUCCESS) 553 *objectEnumerator = TEE_HANDLE_NULL; 554 555 return res; 556 } 557 558 void TEE_FreePersistentObjectEnumerator(TEE_ObjectEnumHandle objectEnumerator) 559 { 560 TEE_Result res; 561 562 if (objectEnumerator == TEE_HANDLE_NULL) 563 return; 564 565 res = utee_storage_free_enum(objectEnumerator); 566 567 if (res != TEE_SUCCESS) 568 TEE_Panic(0); 569 } 570 571 void TEE_ResetPersistentObjectEnumerator(TEE_ObjectEnumHandle objectEnumerator) 572 { 573 TEE_Result res; 574 575 if (objectEnumerator == TEE_HANDLE_NULL) 576 return; 577 578 res = utee_storage_reset_enum(objectEnumerator); 579 580 if (res != TEE_SUCCESS) 581 TEE_Panic(0); 582 } 583 584 TEE_Result TEE_StartPersistentObjectEnumerator(TEE_ObjectEnumHandle 585 objectEnumerator, 586 uint32_t storageID) 587 { 588 TEE_Result res; 589 590 if (storageID != TEE_STORAGE_PRIVATE) 591 return TEE_ERROR_ITEM_NOT_FOUND; 592 593 res = utee_storage_start_enum(objectEnumerator, storageID); 594 595 if (res != TEE_SUCCESS && res != TEE_ERROR_ITEM_NOT_FOUND) 596 TEE_Panic(0); 597 598 return res; 599 } 600 601 TEE_Result TEE_GetNextPersistentObject(TEE_ObjectEnumHandle objectEnumerator, 602 TEE_ObjectInfo *objectInfo, 603 void *objectID, uint32_t *objectIDLen) 604 { 605 TEE_Result res; 606 607 res = utee_storage_next_enum(objectEnumerator, objectInfo, objectID, 608 objectIDLen); 609 610 if (res != TEE_SUCCESS && res != TEE_ERROR_ITEM_NOT_FOUND) 611 TEE_Panic(0); 612 613 return res; 614 } 615 616 /* Data and Key Storage API - Data Stream Access Functions */ 617 618 TEE_Result TEE_ReadObjectData(TEE_ObjectHandle object, void *buffer, 619 uint32_t size, uint32_t *count) 620 { 621 TEE_Result res; 622 623 if (object == TEE_HANDLE_NULL) { 624 res = TEE_ERROR_BAD_PARAMETERS; 625 goto out; 626 } 627 628 res = utee_storage_obj_read(object, buffer, size, count); 629 630 out: 631 if (res != TEE_SUCCESS && 632 res != TEE_ERROR_CORRUPT_OBJECT && 633 res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 634 TEE_Panic(0); 635 636 return res; 637 } 638 639 TEE_Result TEE_WriteObjectData(TEE_ObjectHandle object, void *buffer, 640 uint32_t size) 641 { 642 TEE_Result res; 643 644 if (object == TEE_HANDLE_NULL) { 645 res = TEE_ERROR_BAD_PARAMETERS; 646 goto out; 647 } 648 649 if (size > TEE_DATA_MAX_POSITION) { 650 res = TEE_ERROR_OVERFLOW; 651 goto out; 652 } 653 654 res = utee_storage_obj_write(object, buffer, size); 655 656 out: 657 if (res != TEE_SUCCESS && 658 res != TEE_ERROR_STORAGE_NO_SPACE && 659 res != TEE_ERROR_OVERFLOW && 660 res != TEE_ERROR_CORRUPT_OBJECT && 661 res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 662 TEE_Panic(0); 663 664 return res; 665 } 666 667 TEE_Result TEE_TruncateObjectData(TEE_ObjectHandle object, uint32_t size) 668 { 669 TEE_Result res; 670 671 if (object == TEE_HANDLE_NULL) { 672 res = TEE_ERROR_BAD_PARAMETERS; 673 goto out; 674 } 675 676 res = utee_storage_obj_trunc(object, size); 677 678 out: 679 if (res != TEE_SUCCESS && 680 res != TEE_ERROR_STORAGE_NO_SPACE && 681 res != TEE_ERROR_CORRUPT_OBJECT && 682 res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 683 TEE_Panic(0); 684 685 return res; 686 } 687 688 TEE_Result TEE_SeekObjectData(TEE_ObjectHandle object, int32_t offset, 689 TEE_Whence whence) 690 { 691 TEE_Result res; 692 TEE_ObjectInfo info; 693 694 if (object == TEE_HANDLE_NULL) { 695 res = TEE_ERROR_BAD_PARAMETERS; 696 goto out; 697 } 698 699 res = utee_cryp_obj_get_info((uint32_t)object, &info); 700 if (res != TEE_SUCCESS) 701 goto out; 702 703 switch (whence) { 704 case TEE_DATA_SEEK_SET: 705 if (offset > 0 && (uint32_t)offset > TEE_DATA_MAX_POSITION) { 706 res = TEE_ERROR_OVERFLOW; 707 goto out; 708 } 709 break; 710 case TEE_DATA_SEEK_CUR: 711 if (offset > 0 && 712 ((uint32_t)offset + info.dataPosition > 713 TEE_DATA_MAX_POSITION || 714 (uint32_t)offset + info.dataPosition < 715 info.dataPosition)) { 716 res = TEE_ERROR_OVERFLOW; 717 goto out; 718 } 719 break; 720 case TEE_DATA_SEEK_END: 721 if (offset > 0 && 722 ((uint32_t)offset + info.dataSize > TEE_DATA_MAX_POSITION || 723 (uint32_t)offset + info.dataSize < info.dataSize)) { 724 res = TEE_ERROR_OVERFLOW; 725 goto out; 726 } 727 break; 728 default: 729 res = TEE_ERROR_ITEM_NOT_FOUND; 730 goto out; 731 } 732 733 res = utee_storage_obj_seek(object, offset, whence); 734 735 out: 736 if (res != TEE_SUCCESS && 737 res != TEE_ERROR_OVERFLOW && 738 res != TEE_ERROR_CORRUPT_OBJECT && 739 res != TEE_ERROR_STORAGE_NOT_AVAILABLE) 740 TEE_Panic(0); 741 742 return res; 743 } 744