| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: nsprepkg - Validation of package objects for predefined names |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include "acpi.h" |
| 45 | #include "accommon.h" |
| 46 | #include "acnamesp.h" |
| 47 | #include "acpredef.h" |
| 48 | |
| 49 | |
| 50 | #define _COMPONENT ACPI_NAMESPACE |
| 51 | ACPI_MODULE_NAME ("nsprepkg" ) |
| 52 | |
| 53 | |
| 54 | /* Local prototypes */ |
| 55 | |
| 56 | static ACPI_STATUS |
| 57 | AcpiNsCheckPackageList ( |
| 58 | ACPI_EVALUATE_INFO *Info, |
| 59 | const ACPI_PREDEFINED_INFO *Package, |
| 60 | ACPI_OPERAND_OBJECT **Elements, |
| 61 | UINT32 Count); |
| 62 | |
| 63 | static ACPI_STATUS |
| 64 | AcpiNsCheckPackageElements ( |
| 65 | ACPI_EVALUATE_INFO *Info, |
| 66 | ACPI_OPERAND_OBJECT **Elements, |
| 67 | UINT8 Type1, |
| 68 | UINT32 Count1, |
| 69 | UINT8 Type2, |
| 70 | UINT32 Count2, |
| 71 | UINT32 StartIndex); |
| 72 | |
| 73 | static ACPI_STATUS |
| 74 | AcpiNsCustomPackage ( |
| 75 | ACPI_EVALUATE_INFO *Info, |
| 76 | ACPI_OPERAND_OBJECT **Elements, |
| 77 | UINT32 Count); |
| 78 | |
| 79 | |
| 80 | /******************************************************************************* |
| 81 | * |
| 82 | * FUNCTION: AcpiNsCheckPackage |
| 83 | * |
| 84 | * PARAMETERS: Info - Method execution information block |
| 85 | * ReturnObjectPtr - Pointer to the object returned from the |
| 86 | * evaluation of a method or object |
| 87 | * |
| 88 | * RETURN: Status |
| 89 | * |
| 90 | * DESCRIPTION: Check a returned package object for the correct count and |
| 91 | * correct type of all sub-objects. |
| 92 | * |
| 93 | ******************************************************************************/ |
| 94 | |
| 95 | ACPI_STATUS |
| 96 | AcpiNsCheckPackage ( |
| 97 | ACPI_EVALUATE_INFO *Info, |
| 98 | ACPI_OPERAND_OBJECT **ReturnObjectPtr) |
| 99 | { |
| 100 | ACPI_OPERAND_OBJECT *ReturnObject = *ReturnObjectPtr; |
| 101 | const ACPI_PREDEFINED_INFO *Package; |
| 102 | ACPI_OPERAND_OBJECT **Elements; |
| 103 | ACPI_STATUS Status = AE_OK; |
| 104 | UINT32 ExpectedCount; |
| 105 | UINT32 Count; |
| 106 | UINT32 i; |
| 107 | |
| 108 | |
| 109 | ACPI_FUNCTION_NAME (NsCheckPackage); |
| 110 | |
| 111 | |
| 112 | /* The package info for this name is in the next table entry */ |
| 113 | |
| 114 | Package = Info->Predefined + 1; |
| 115 | |
| 116 | ACPI_DEBUG_PRINT ((ACPI_DB_NAMES, |
| 117 | "%s Validating return Package of Type %X, Count %X\n" , |
| 118 | Info->FullPathname, Package->RetInfo.Type, |
| 119 | ReturnObject->Package.Count)); |
| 120 | |
| 121 | /* |
| 122 | * For variable-length Packages, we can safely remove all embedded |
| 123 | * and trailing NULL package elements |
| 124 | */ |
| 125 | AcpiNsRemoveNullElements (Info, Package->RetInfo.Type, ReturnObject); |
| 126 | |
| 127 | /* Extract package count and elements array */ |
| 128 | |
| 129 | Elements = ReturnObject->Package.Elements; |
| 130 | Count = ReturnObject->Package.Count; |
| 131 | |
| 132 | /* |
| 133 | * Most packages must have at least one element. The only exception |
| 134 | * is the variable-length package (ACPI_PTYPE1_VAR). |
| 135 | */ |
| 136 | if (!Count) |
| 137 | { |
| 138 | if (Package->RetInfo.Type == ACPI_PTYPE1_VAR) |
| 139 | { |
| 140 | return (AE_OK); |
| 141 | } |
| 142 | |
| 143 | ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, |
| 144 | "Return Package has no elements (empty)" )); |
| 145 | |
| 146 | return (AE_AML_OPERAND_VALUE); |
| 147 | } |
| 148 | |
| 149 | /* |
| 150 | * Decode the type of the expected package contents |
| 151 | * |
| 152 | * PTYPE1 packages contain no subpackages |
| 153 | * PTYPE2 packages contain subpackages |
| 154 | */ |
| 155 | switch (Package->RetInfo.Type) |
| 156 | { |
| 157 | case ACPI_PTYPE_CUSTOM: |
| 158 | |
| 159 | Status = AcpiNsCustomPackage (Info, Elements, Count); |
| 160 | break; |
| 161 | |
| 162 | case ACPI_PTYPE1_FIXED: |
| 163 | /* |
| 164 | * The package count is fixed and there are no subpackages |
| 165 | * |
| 166 | * If package is too small, exit. |
| 167 | * If package is larger than expected, issue warning but continue |
| 168 | */ |
| 169 | ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; |
| 170 | if (Count < ExpectedCount) |
| 171 | { |
| 172 | goto PackageTooSmall; |
| 173 | } |
| 174 | else if (Count > ExpectedCount) |
| 175 | { |
| 176 | ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, |
| 177 | "%s: Return Package is larger than needed - " |
| 178 | "found %u, expected %u\n" , |
| 179 | Info->FullPathname, Count, ExpectedCount)); |
| 180 | } |
| 181 | |
| 182 | /* Validate all elements of the returned package */ |
| 183 | |
| 184 | Status = AcpiNsCheckPackageElements (Info, Elements, |
| 185 | Package->RetInfo.ObjectType1, Package->RetInfo.Count1, |
| 186 | Package->RetInfo.ObjectType2, Package->RetInfo.Count2, 0); |
| 187 | break; |
| 188 | |
| 189 | case ACPI_PTYPE1_VAR: |
| 190 | /* |
| 191 | * The package count is variable, there are no subpackages, and all |
| 192 | * elements must be of the same type |
| 193 | */ |
| 194 | for (i = 0; i < Count; i++) |
| 195 | { |
| 196 | Status = AcpiNsCheckObjectType (Info, Elements, |
| 197 | Package->RetInfo.ObjectType1, i); |
| 198 | if (ACPI_FAILURE (Status)) |
| 199 | { |
| 200 | return (Status); |
| 201 | } |
| 202 | |
| 203 | Elements++; |
| 204 | } |
| 205 | break; |
| 206 | |
| 207 | case ACPI_PTYPE1_OPTION: |
| 208 | /* |
| 209 | * The package count is variable, there are no subpackages. There are |
| 210 | * a fixed number of required elements, and a variable number of |
| 211 | * optional elements. |
| 212 | * |
| 213 | * Check if package is at least as large as the minimum required |
| 214 | */ |
| 215 | ExpectedCount = Package->RetInfo3.Count; |
| 216 | if (Count < ExpectedCount) |
| 217 | { |
| 218 | goto PackageTooSmall; |
| 219 | } |
| 220 | |
| 221 | /* Variable number of sub-objects */ |
| 222 | |
| 223 | for (i = 0; i < Count; i++) |
| 224 | { |
| 225 | if (i < Package->RetInfo3.Count) |
| 226 | { |
| 227 | /* These are the required package elements (0, 1, or 2) */ |
| 228 | |
| 229 | Status = AcpiNsCheckObjectType (Info, Elements, |
| 230 | Package->RetInfo3.ObjectType[i], i); |
| 231 | if (ACPI_FAILURE (Status)) |
| 232 | { |
| 233 | return (Status); |
| 234 | } |
| 235 | } |
| 236 | else |
| 237 | { |
| 238 | /* These are the optional package elements */ |
| 239 | |
| 240 | Status = AcpiNsCheckObjectType (Info, Elements, |
| 241 | Package->RetInfo3.TailObjectType, i); |
| 242 | if (ACPI_FAILURE (Status)) |
| 243 | { |
| 244 | return (Status); |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | Elements++; |
| 249 | } |
| 250 | break; |
| 251 | |
| 252 | case ACPI_PTYPE2_REV_FIXED: |
| 253 | |
| 254 | /* First element is the (Integer) revision */ |
| 255 | |
| 256 | Status = AcpiNsCheckObjectType ( |
| 257 | Info, Elements, ACPI_RTYPE_INTEGER, 0); |
| 258 | if (ACPI_FAILURE (Status)) |
| 259 | { |
| 260 | return (Status); |
| 261 | } |
| 262 | |
| 263 | Elements++; |
| 264 | Count--; |
| 265 | |
| 266 | /* Examine the subpackages */ |
| 267 | |
| 268 | Status = AcpiNsCheckPackageList (Info, Package, Elements, Count); |
| 269 | break; |
| 270 | |
| 271 | case ACPI_PTYPE2_PKG_COUNT: |
| 272 | |
| 273 | /* First element is the (Integer) count of subpackages to follow */ |
| 274 | |
| 275 | Status = AcpiNsCheckObjectType ( |
| 276 | Info, Elements, ACPI_RTYPE_INTEGER, 0); |
| 277 | if (ACPI_FAILURE (Status)) |
| 278 | { |
| 279 | return (Status); |
| 280 | } |
| 281 | |
| 282 | /* |
| 283 | * Count cannot be larger than the parent package length, but allow it |
| 284 | * to be smaller. The >= accounts for the Integer above. |
| 285 | */ |
| 286 | ExpectedCount = (UINT32) (*Elements)->Integer.Value; |
| 287 | if (ExpectedCount >= Count) |
| 288 | { |
| 289 | goto PackageTooSmall; |
| 290 | } |
| 291 | |
| 292 | Count = ExpectedCount; |
| 293 | Elements++; |
| 294 | |
| 295 | /* Examine the subpackages */ |
| 296 | |
| 297 | Status = AcpiNsCheckPackageList (Info, Package, Elements, Count); |
| 298 | break; |
| 299 | |
| 300 | case ACPI_PTYPE2: |
| 301 | case ACPI_PTYPE2_FIXED: |
| 302 | case ACPI_PTYPE2_MIN: |
| 303 | case ACPI_PTYPE2_COUNT: |
| 304 | case ACPI_PTYPE2_FIX_VAR: |
| 305 | /* |
| 306 | * These types all return a single Package that consists of a |
| 307 | * variable number of subpackages. |
| 308 | * |
| 309 | * First, ensure that the first element is a subpackage. If not, |
| 310 | * the BIOS may have incorrectly returned the object as a single |
| 311 | * package instead of a Package of Packages (a common error if |
| 312 | * there is only one entry). We may be able to repair this by |
| 313 | * wrapping the returned Package with a new outer Package. |
| 314 | */ |
| 315 | if (*Elements && ((*Elements)->Common.Type != ACPI_TYPE_PACKAGE)) |
| 316 | { |
| 317 | /* Create the new outer package and populate it */ |
| 318 | |
| 319 | Status = AcpiNsWrapWithPackage ( |
| 320 | Info, ReturnObject, ReturnObjectPtr); |
| 321 | if (ACPI_FAILURE (Status)) |
| 322 | { |
| 323 | return (Status); |
| 324 | } |
| 325 | |
| 326 | /* Update locals to point to the new package (of 1 element) */ |
| 327 | |
| 328 | ReturnObject = *ReturnObjectPtr; |
| 329 | Elements = ReturnObject->Package.Elements; |
| 330 | Count = 1; |
| 331 | } |
| 332 | |
| 333 | /* Examine the subpackages */ |
| 334 | |
| 335 | Status = AcpiNsCheckPackageList (Info, Package, Elements, Count); |
| 336 | break; |
| 337 | |
| 338 | case ACPI_PTYPE2_VAR_VAR: |
| 339 | /* |
| 340 | * Returns a variable list of packages, each with a variable list |
| 341 | * of objects. |
| 342 | */ |
| 343 | break; |
| 344 | |
| 345 | case ACPI_PTYPE2_UUID_PAIR: |
| 346 | |
| 347 | /* The package must contain pairs of (UUID + type) */ |
| 348 | |
| 349 | if (Count & 1) |
| 350 | { |
| 351 | ExpectedCount = Count + 1; |
| 352 | goto PackageTooSmall; |
| 353 | } |
| 354 | |
| 355 | while (Count > 0) |
| 356 | { |
| 357 | Status = AcpiNsCheckObjectType(Info, Elements, |
| 358 | Package->RetInfo.ObjectType1, 0); |
| 359 | if (ACPI_FAILURE(Status)) |
| 360 | { |
| 361 | return (Status); |
| 362 | } |
| 363 | |
| 364 | /* Validate length of the UUID buffer */ |
| 365 | |
| 366 | if ((*Elements)->Buffer.Length != 16) |
| 367 | { |
| 368 | ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, |
| 369 | Info->NodeFlags, "Invalid length for UUID Buffer" )); |
| 370 | return (AE_AML_OPERAND_VALUE); |
| 371 | } |
| 372 | |
| 373 | Status = AcpiNsCheckObjectType(Info, Elements + 1, |
| 374 | Package->RetInfo.ObjectType2, 0); |
| 375 | if (ACPI_FAILURE(Status)) |
| 376 | { |
| 377 | return (Status); |
| 378 | } |
| 379 | |
| 380 | Elements += 2; |
| 381 | Count -= 2; |
| 382 | } |
| 383 | break; |
| 384 | |
| 385 | default: |
| 386 | |
| 387 | /* Should not get here if predefined info table is correct */ |
| 388 | |
| 389 | ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, |
| 390 | "Invalid internal return type in table entry: %X" , |
| 391 | Package->RetInfo.Type)); |
| 392 | |
| 393 | return (AE_AML_INTERNAL); |
| 394 | } |
| 395 | |
| 396 | return (Status); |
| 397 | |
| 398 | |
| 399 | PackageTooSmall: |
| 400 | |
| 401 | /* Error exit for the case with an incorrect package count */ |
| 402 | |
| 403 | ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, |
| 404 | "Return Package is too small - found %u elements, expected %u" , |
| 405 | Count, ExpectedCount)); |
| 406 | |
| 407 | return (AE_AML_OPERAND_VALUE); |
| 408 | } |
| 409 | |
| 410 | |
| 411 | /******************************************************************************* |
| 412 | * |
| 413 | * FUNCTION: AcpiNsCheckPackageList |
| 414 | * |
| 415 | * PARAMETERS: Info - Method execution information block |
| 416 | * Package - Pointer to package-specific info for method |
| 417 | * Elements - Element list of parent package. All elements |
| 418 | * of this list should be of type Package. |
| 419 | * Count - Count of subpackages |
| 420 | * |
| 421 | * RETURN: Status |
| 422 | * |
| 423 | * DESCRIPTION: Examine a list of subpackages |
| 424 | * |
| 425 | ******************************************************************************/ |
| 426 | |
| 427 | static ACPI_STATUS |
| 428 | AcpiNsCheckPackageList ( |
| 429 | ACPI_EVALUATE_INFO *Info, |
| 430 | const ACPI_PREDEFINED_INFO *Package, |
| 431 | ACPI_OPERAND_OBJECT **Elements, |
| 432 | UINT32 Count) |
| 433 | { |
| 434 | ACPI_OPERAND_OBJECT *SubPackage; |
| 435 | ACPI_OPERAND_OBJECT **SubElements; |
| 436 | ACPI_STATUS Status; |
| 437 | UINT32 ExpectedCount; |
| 438 | UINT32 i; |
| 439 | UINT32 j; |
| 440 | |
| 441 | |
| 442 | /* |
| 443 | * Validate each subpackage in the parent Package |
| 444 | * |
| 445 | * NOTE: assumes list of subpackages contains no NULL elements. |
| 446 | * Any NULL elements should have been removed by earlier call |
| 447 | * to AcpiNsRemoveNullElements. |
| 448 | */ |
| 449 | for (i = 0; i < Count; i++) |
| 450 | { |
| 451 | SubPackage = *Elements; |
| 452 | SubElements = SubPackage->Package.Elements; |
| 453 | Info->ParentPackage = SubPackage; |
| 454 | |
| 455 | /* Each sub-object must be of type Package */ |
| 456 | |
| 457 | Status = AcpiNsCheckObjectType (Info, &SubPackage, |
| 458 | ACPI_RTYPE_PACKAGE, i); |
| 459 | if (ACPI_FAILURE (Status)) |
| 460 | { |
| 461 | return (Status); |
| 462 | } |
| 463 | |
| 464 | /* Examine the different types of expected subpackages */ |
| 465 | |
| 466 | Info->ParentPackage = SubPackage; |
| 467 | switch (Package->RetInfo.Type) |
| 468 | { |
| 469 | case ACPI_PTYPE2: |
| 470 | case ACPI_PTYPE2_PKG_COUNT: |
| 471 | case ACPI_PTYPE2_REV_FIXED: |
| 472 | |
| 473 | /* Each subpackage has a fixed number of elements */ |
| 474 | |
| 475 | ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; |
| 476 | if (SubPackage->Package.Count < ExpectedCount) |
| 477 | { |
| 478 | goto PackageTooSmall; |
| 479 | } |
| 480 | |
| 481 | Status = AcpiNsCheckPackageElements (Info, SubElements, |
| 482 | Package->RetInfo.ObjectType1, |
| 483 | Package->RetInfo.Count1, |
| 484 | Package->RetInfo.ObjectType2, |
| 485 | Package->RetInfo.Count2, 0); |
| 486 | if (ACPI_FAILURE (Status)) |
| 487 | { |
| 488 | return (Status); |
| 489 | } |
| 490 | break; |
| 491 | |
| 492 | case ACPI_PTYPE2_FIX_VAR: |
| 493 | /* |
| 494 | * Each subpackage has a fixed number of elements and an |
| 495 | * optional element |
| 496 | */ |
| 497 | ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; |
| 498 | if (SubPackage->Package.Count < ExpectedCount) |
| 499 | { |
| 500 | goto PackageTooSmall; |
| 501 | } |
| 502 | |
| 503 | Status = AcpiNsCheckPackageElements (Info, SubElements, |
| 504 | Package->RetInfo.ObjectType1, |
| 505 | Package->RetInfo.Count1, |
| 506 | Package->RetInfo.ObjectType2, |
| 507 | SubPackage->Package.Count - Package->RetInfo.Count1, 0); |
| 508 | if (ACPI_FAILURE (Status)) |
| 509 | { |
| 510 | return (Status); |
| 511 | } |
| 512 | break; |
| 513 | |
| 514 | case ACPI_PTYPE2_VAR_VAR: |
| 515 | /* |
| 516 | * Each subpackage has a fixed or variable number of elements |
| 517 | */ |
| 518 | break; |
| 519 | |
| 520 | case ACPI_PTYPE2_FIXED: |
| 521 | |
| 522 | /* Each subpackage has a fixed length */ |
| 523 | |
| 524 | ExpectedCount = Package->RetInfo2.Count; |
| 525 | if (SubPackage->Package.Count < ExpectedCount) |
| 526 | { |
| 527 | goto PackageTooSmall; |
| 528 | } |
| 529 | |
| 530 | /* Check the type of each subpackage element */ |
| 531 | |
| 532 | for (j = 0; j < ExpectedCount; j++) |
| 533 | { |
| 534 | Status = AcpiNsCheckObjectType (Info, &SubElements[j], |
| 535 | Package->RetInfo2.ObjectType[j], j); |
| 536 | if (ACPI_FAILURE (Status)) |
| 537 | { |
| 538 | return (Status); |
| 539 | } |
| 540 | } |
| 541 | break; |
| 542 | |
| 543 | case ACPI_PTYPE2_MIN: |
| 544 | |
| 545 | /* Each subpackage has a variable but minimum length */ |
| 546 | |
| 547 | ExpectedCount = Package->RetInfo.Count1; |
| 548 | if (SubPackage->Package.Count < ExpectedCount) |
| 549 | { |
| 550 | goto PackageTooSmall; |
| 551 | } |
| 552 | |
| 553 | /* Check the type of each subpackage element */ |
| 554 | |
| 555 | Status = AcpiNsCheckPackageElements (Info, SubElements, |
| 556 | Package->RetInfo.ObjectType1, |
| 557 | SubPackage->Package.Count, 0, 0, 0); |
| 558 | if (ACPI_FAILURE (Status)) |
| 559 | { |
| 560 | return (Status); |
| 561 | } |
| 562 | break; |
| 563 | |
| 564 | case ACPI_PTYPE2_COUNT: |
| 565 | /* |
| 566 | * First element is the (Integer) count of elements, including |
| 567 | * the count field (the ACPI name is NumElements) |
| 568 | */ |
| 569 | Status = AcpiNsCheckObjectType (Info, SubElements, |
| 570 | ACPI_RTYPE_INTEGER, 0); |
| 571 | if (ACPI_FAILURE (Status)) |
| 572 | { |
| 573 | return (Status); |
| 574 | } |
| 575 | |
| 576 | /* |
| 577 | * Make sure package is large enough for the Count and is |
| 578 | * is as large as the minimum size |
| 579 | */ |
| 580 | ExpectedCount = (UINT32) (*SubElements)->Integer.Value; |
| 581 | if (SubPackage->Package.Count < ExpectedCount) |
| 582 | { |
| 583 | goto PackageTooSmall; |
| 584 | } |
| 585 | |
| 586 | if (SubPackage->Package.Count < Package->RetInfo.Count1) |
| 587 | { |
| 588 | ExpectedCount = Package->RetInfo.Count1; |
| 589 | goto PackageTooSmall; |
| 590 | } |
| 591 | |
| 592 | if (ExpectedCount == 0) |
| 593 | { |
| 594 | /* |
| 595 | * Either the NumEntries element was originally zero or it was |
| 596 | * a NULL element and repaired to an Integer of value zero. |
| 597 | * In either case, repair it by setting NumEntries to be the |
| 598 | * actual size of the subpackage. |
| 599 | */ |
| 600 | ExpectedCount = SubPackage->Package.Count; |
| 601 | (*SubElements)->Integer.Value = ExpectedCount; |
| 602 | } |
| 603 | |
| 604 | /* Check the type of each subpackage element */ |
| 605 | |
| 606 | Status = AcpiNsCheckPackageElements (Info, (SubElements + 1), |
| 607 | Package->RetInfo.ObjectType1, |
| 608 | (ExpectedCount - 1), 0, 0, 1); |
| 609 | if (ACPI_FAILURE (Status)) |
| 610 | { |
| 611 | return (Status); |
| 612 | } |
| 613 | break; |
| 614 | |
| 615 | default: /* Should not get here, type was validated by caller */ |
| 616 | |
| 617 | return (AE_AML_INTERNAL); |
| 618 | } |
| 619 | |
| 620 | Elements++; |
| 621 | } |
| 622 | |
| 623 | return (AE_OK); |
| 624 | |
| 625 | |
| 626 | PackageTooSmall: |
| 627 | |
| 628 | /* The subpackage count was smaller than required */ |
| 629 | |
| 630 | ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, |
| 631 | "Return SubPackage[%u] is too small - found %u elements, expected %u" , |
| 632 | i, SubPackage->Package.Count, ExpectedCount)); |
| 633 | |
| 634 | return (AE_AML_OPERAND_VALUE); |
| 635 | } |
| 636 | |
| 637 | |
| 638 | /******************************************************************************* |
| 639 | * |
| 640 | * FUNCTION: AcpiNsCustomPackage |
| 641 | * |
| 642 | * PARAMETERS: Info - Method execution information block |
| 643 | * Elements - Pointer to the package elements array |
| 644 | * Count - Element count for the package |
| 645 | * |
| 646 | * RETURN: Status |
| 647 | * |
| 648 | * DESCRIPTION: Check a returned package object for the correct count and |
| 649 | * correct type of all sub-objects. |
| 650 | * |
| 651 | * NOTE: Currently used for the _BIX method only. When needed for two or more |
| 652 | * methods, probably a detect/dispatch mechanism will be required. |
| 653 | * |
| 654 | ******************************************************************************/ |
| 655 | |
| 656 | static ACPI_STATUS |
| 657 | AcpiNsCustomPackage ( |
| 658 | ACPI_EVALUATE_INFO *Info, |
| 659 | ACPI_OPERAND_OBJECT **Elements, |
| 660 | UINT32 Count) |
| 661 | { |
| 662 | UINT32 ExpectedCount; |
| 663 | UINT32 Version; |
| 664 | ACPI_STATUS Status = AE_OK; |
| 665 | |
| 666 | |
| 667 | ACPI_FUNCTION_NAME (NsCustomPackage); |
| 668 | |
| 669 | |
| 670 | /* Get version number, must be Integer */ |
| 671 | |
| 672 | if ((*Elements)->Common.Type != ACPI_TYPE_INTEGER) |
| 673 | { |
| 674 | ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, |
| 675 | "Return Package has invalid object type for version number" )); |
| 676 | return_ACPI_STATUS (AE_AML_OPERAND_TYPE); |
| 677 | } |
| 678 | |
| 679 | Version = (UINT32) (*Elements)->Integer.Value; |
| 680 | ExpectedCount = 21; /* Version 1 */ |
| 681 | |
| 682 | if (Version == 0) |
| 683 | { |
| 684 | ExpectedCount = 20; /* Version 0 */ |
| 685 | } |
| 686 | |
| 687 | if (Count < ExpectedCount) |
| 688 | { |
| 689 | ACPI_WARN_PREDEFINED ((AE_INFO, Info->FullPathname, Info->NodeFlags, |
| 690 | "Return Package is too small - found %u elements, expected %u" , |
| 691 | Count, ExpectedCount)); |
| 692 | return_ACPI_STATUS (AE_AML_OPERAND_VALUE); |
| 693 | } |
| 694 | else if (Count > ExpectedCount) |
| 695 | { |
| 696 | ACPI_DEBUG_PRINT ((ACPI_DB_REPAIR, |
| 697 | "%s: Return Package is larger than needed - " |
| 698 | "found %u, expected %u\n" , |
| 699 | Info->FullPathname, Count, ExpectedCount)); |
| 700 | } |
| 701 | |
| 702 | /* Validate all elements of the returned package */ |
| 703 | |
| 704 | Status = AcpiNsCheckPackageElements (Info, Elements, |
| 705 | ACPI_RTYPE_INTEGER, 16, |
| 706 | ACPI_RTYPE_STRING, 4, 0); |
| 707 | if (ACPI_FAILURE (Status)) |
| 708 | { |
| 709 | return_ACPI_STATUS (Status); |
| 710 | } |
| 711 | |
| 712 | /* Version 1 has a single trailing integer */ |
| 713 | |
| 714 | if (Version > 0) |
| 715 | { |
| 716 | Status = AcpiNsCheckPackageElements (Info, Elements + 20, |
| 717 | ACPI_RTYPE_INTEGER, 1, 0, 0, 20); |
| 718 | } |
| 719 | |
| 720 | return_ACPI_STATUS (Status); |
| 721 | } |
| 722 | |
| 723 | |
| 724 | /******************************************************************************* |
| 725 | * |
| 726 | * FUNCTION: AcpiNsCheckPackageElements |
| 727 | * |
| 728 | * PARAMETERS: Info - Method execution information block |
| 729 | * Elements - Pointer to the package elements array |
| 730 | * Type1 - Object type for first group |
| 731 | * Count1 - Count for first group |
| 732 | * Type2 - Object type for second group |
| 733 | * Count2 - Count for second group |
| 734 | * StartIndex - Start of the first group of elements |
| 735 | * |
| 736 | * RETURN: Status |
| 737 | * |
| 738 | * DESCRIPTION: Check that all elements of a package are of the correct object |
| 739 | * type. Supports up to two groups of different object types. |
| 740 | * |
| 741 | ******************************************************************************/ |
| 742 | |
| 743 | static ACPI_STATUS |
| 744 | AcpiNsCheckPackageElements ( |
| 745 | ACPI_EVALUATE_INFO *Info, |
| 746 | ACPI_OPERAND_OBJECT **Elements, |
| 747 | UINT8 Type1, |
| 748 | UINT32 Count1, |
| 749 | UINT8 Type2, |
| 750 | UINT32 Count2, |
| 751 | UINT32 StartIndex) |
| 752 | { |
| 753 | ACPI_OPERAND_OBJECT **ThisElement = Elements; |
| 754 | ACPI_STATUS Status; |
| 755 | UINT32 i; |
| 756 | |
| 757 | |
| 758 | /* |
| 759 | * Up to two groups of package elements are supported by the data |
| 760 | * structure. All elements in each group must be of the same type. |
| 761 | * The second group can have a count of zero. |
| 762 | */ |
| 763 | for (i = 0; i < Count1; i++) |
| 764 | { |
| 765 | Status = AcpiNsCheckObjectType (Info, ThisElement, |
| 766 | Type1, i + StartIndex); |
| 767 | if (ACPI_FAILURE (Status)) |
| 768 | { |
| 769 | return (Status); |
| 770 | } |
| 771 | |
| 772 | ThisElement++; |
| 773 | } |
| 774 | |
| 775 | for (i = 0; i < Count2; i++) |
| 776 | { |
| 777 | Status = AcpiNsCheckObjectType (Info, ThisElement, |
| 778 | Type2, (i + Count1 + StartIndex)); |
| 779 | if (ACPI_FAILURE (Status)) |
| 780 | { |
| 781 | return (Status); |
| 782 | } |
| 783 | |
| 784 | ThisElement++; |
| 785 | } |
| 786 | |
| 787 | return (AE_OK); |
| 788 | } |
| 789 | |