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42f8fb75 BM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: nsprepkg - Validation of package objects for predefined names | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
c8100dc4 | 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
42f8fb75 BM |
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/acpi.h> | |
45 | #include "accommon.h" | |
46 | #include "acnamesp.h" | |
47 | #include "acpredef.h" | |
48 | ||
49 | #define _COMPONENT ACPI_NAMESPACE | |
50 | ACPI_MODULE_NAME("nsprepkg") | |
51 | ||
52 | /* Local prototypes */ | |
53 | static acpi_status | |
29a241cc | 54 | acpi_ns_check_package_list(struct acpi_evaluate_info *info, |
42f8fb75 BM |
55 | const union acpi_predefined_info *package, |
56 | union acpi_operand_object **elements, u32 count); | |
57 | ||
58 | static acpi_status | |
29a241cc | 59 | acpi_ns_check_package_elements(struct acpi_evaluate_info *info, |
42f8fb75 BM |
60 | union acpi_operand_object **elements, |
61 | u8 type1, | |
62 | u32 count1, | |
63 | u8 type2, u32 count2, u32 start_index); | |
64 | ||
65 | /******************************************************************************* | |
66 | * | |
67 | * FUNCTION: acpi_ns_check_package | |
68 | * | |
29a241cc | 69 | * PARAMETERS: info - Method execution information block |
42f8fb75 BM |
70 | * return_object_ptr - Pointer to the object returned from the |
71 | * evaluation of a method or object | |
72 | * | |
73 | * RETURN: Status | |
74 | * | |
75 | * DESCRIPTION: Check a returned package object for the correct count and | |
76 | * correct type of all sub-objects. | |
77 | * | |
78 | ******************************************************************************/ | |
79 | ||
80 | acpi_status | |
29a241cc | 81 | acpi_ns_check_package(struct acpi_evaluate_info *info, |
42f8fb75 BM |
82 | union acpi_operand_object **return_object_ptr) |
83 | { | |
84 | union acpi_operand_object *return_object = *return_object_ptr; | |
85 | const union acpi_predefined_info *package; | |
86 | union acpi_operand_object **elements; | |
87 | acpi_status status = AE_OK; | |
88 | u32 expected_count; | |
89 | u32 count; | |
90 | u32 i; | |
91 | ||
92 | ACPI_FUNCTION_NAME(ns_check_package); | |
93 | ||
94 | /* The package info for this name is in the next table entry */ | |
95 | ||
29a241cc | 96 | package = info->predefined + 1; |
42f8fb75 BM |
97 | |
98 | ACPI_DEBUG_PRINT((ACPI_DB_NAMES, | |
99 | "%s Validating return Package of Type %X, Count %X\n", | |
29a241cc | 100 | info->full_pathname, package->ret_info.type, |
42f8fb75 BM |
101 | return_object->package.count)); |
102 | ||
103 | /* | |
104 | * For variable-length Packages, we can safely remove all embedded | |
105 | * and trailing NULL package elements | |
106 | */ | |
29a241cc | 107 | acpi_ns_remove_null_elements(info, package->ret_info.type, |
42f8fb75 BM |
108 | return_object); |
109 | ||
110 | /* Extract package count and elements array */ | |
111 | ||
112 | elements = return_object->package.elements; | |
113 | count = return_object->package.count; | |
114 | ||
02d4fb36 BM |
115 | /* |
116 | * Most packages must have at least one element. The only exception | |
117 | * is the variable-length package (ACPI_PTYPE1_VAR). | |
118 | */ | |
42f8fb75 | 119 | if (!count) { |
02d4fb36 BM |
120 | if (package->ret_info.type == ACPI_PTYPE1_VAR) { |
121 | return (AE_OK); | |
122 | } | |
123 | ||
29a241cc BM |
124 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, |
125 | info->node_flags, | |
42f8fb75 BM |
126 | "Return Package has no elements (empty)")); |
127 | ||
128 | return (AE_AML_OPERAND_VALUE); | |
129 | } | |
130 | ||
131 | /* | |
132 | * Decode the type of the expected package contents | |
133 | * | |
134 | * PTYPE1 packages contain no subpackages | |
0a16d12a | 135 | * PTYPE2 packages contain subpackages |
42f8fb75 BM |
136 | */ |
137 | switch (package->ret_info.type) { | |
138 | case ACPI_PTYPE1_FIXED: | |
42f8fb75 | 139 | /* |
0a16d12a | 140 | * The package count is fixed and there are no subpackages |
42f8fb75 BM |
141 | * |
142 | * If package is too small, exit. | |
143 | * If package is larger than expected, issue warning but continue | |
144 | */ | |
145 | expected_count = | |
146 | package->ret_info.count1 + package->ret_info.count2; | |
147 | if (count < expected_count) { | |
148 | goto package_too_small; | |
149 | } else if (count > expected_count) { | |
150 | ACPI_DEBUG_PRINT((ACPI_DB_REPAIR, | |
151 | "%s: Return Package is larger than needed - " | |
152 | "found %u, expected %u\n", | |
29a241cc | 153 | info->full_pathname, count, |
42f8fb75 BM |
154 | expected_count)); |
155 | } | |
156 | ||
157 | /* Validate all elements of the returned package */ | |
158 | ||
29a241cc | 159 | status = acpi_ns_check_package_elements(info, elements, |
42f8fb75 BM |
160 | package->ret_info. |
161 | object_type1, | |
162 | package->ret_info. | |
163 | count1, | |
164 | package->ret_info. | |
165 | object_type2, | |
166 | package->ret_info. | |
167 | count2, 0); | |
168 | break; | |
169 | ||
170 | case ACPI_PTYPE1_VAR: | |
42f8fb75 | 171 | /* |
0a16d12a | 172 | * The package count is variable, there are no subpackages, and all |
42f8fb75 BM |
173 | * elements must be of the same type |
174 | */ | |
175 | for (i = 0; i < count; i++) { | |
29a241cc | 176 | status = acpi_ns_check_object_type(info, elements, |
42f8fb75 BM |
177 | package->ret_info. |
178 | object_type1, i); | |
179 | if (ACPI_FAILURE(status)) { | |
180 | return (status); | |
181 | } | |
182 | elements++; | |
183 | } | |
184 | break; | |
185 | ||
186 | case ACPI_PTYPE1_OPTION: | |
42f8fb75 | 187 | /* |
0a16d12a | 188 | * The package count is variable, there are no subpackages. There are |
42f8fb75 BM |
189 | * a fixed number of required elements, and a variable number of |
190 | * optional elements. | |
191 | * | |
192 | * Check if package is at least as large as the minimum required | |
193 | */ | |
194 | expected_count = package->ret_info3.count; | |
195 | if (count < expected_count) { | |
196 | goto package_too_small; | |
197 | } | |
198 | ||
199 | /* Variable number of sub-objects */ | |
200 | ||
201 | for (i = 0; i < count; i++) { | |
202 | if (i < package->ret_info3.count) { | |
203 | ||
204 | /* These are the required package elements (0, 1, or 2) */ | |
205 | ||
206 | status = | |
29a241cc | 207 | acpi_ns_check_object_type(info, elements, |
42f8fb75 BM |
208 | package-> |
209 | ret_info3. | |
210 | object_type[i], | |
211 | i); | |
212 | if (ACPI_FAILURE(status)) { | |
213 | return (status); | |
214 | } | |
215 | } else { | |
216 | /* These are the optional package elements */ | |
217 | ||
218 | status = | |
29a241cc | 219 | acpi_ns_check_object_type(info, elements, |
42f8fb75 BM |
220 | package-> |
221 | ret_info3. | |
222 | tail_object_type, | |
223 | i); | |
224 | if (ACPI_FAILURE(status)) { | |
225 | return (status); | |
226 | } | |
227 | } | |
228 | elements++; | |
229 | } | |
230 | break; | |
231 | ||
232 | case ACPI_PTYPE2_REV_FIXED: | |
233 | ||
234 | /* First element is the (Integer) revision */ | |
235 | ||
1fad8738 BM |
236 | status = |
237 | acpi_ns_check_object_type(info, elements, | |
238 | ACPI_RTYPE_INTEGER, 0); | |
42f8fb75 BM |
239 | if (ACPI_FAILURE(status)) { |
240 | return (status); | |
241 | } | |
242 | ||
243 | elements++; | |
244 | count--; | |
245 | ||
0a16d12a | 246 | /* Examine the subpackages */ |
42f8fb75 BM |
247 | |
248 | status = | |
29a241cc | 249 | acpi_ns_check_package_list(info, package, elements, count); |
42f8fb75 BM |
250 | break; |
251 | ||
252 | case ACPI_PTYPE2_PKG_COUNT: | |
253 | ||
0a16d12a | 254 | /* First element is the (Integer) count of subpackages to follow */ |
42f8fb75 | 255 | |
1fad8738 BM |
256 | status = |
257 | acpi_ns_check_object_type(info, elements, | |
258 | ACPI_RTYPE_INTEGER, 0); | |
42f8fb75 BM |
259 | if (ACPI_FAILURE(status)) { |
260 | return (status); | |
261 | } | |
262 | ||
263 | /* | |
264 | * Count cannot be larger than the parent package length, but allow it | |
265 | * to be smaller. The >= accounts for the Integer above. | |
266 | */ | |
267 | expected_count = (u32)(*elements)->integer.value; | |
268 | if (expected_count >= count) { | |
269 | goto package_too_small; | |
270 | } | |
271 | ||
272 | count = expected_count; | |
273 | elements++; | |
274 | ||
0a16d12a | 275 | /* Examine the subpackages */ |
42f8fb75 BM |
276 | |
277 | status = | |
29a241cc | 278 | acpi_ns_check_package_list(info, package, elements, count); |
42f8fb75 BM |
279 | break; |
280 | ||
281 | case ACPI_PTYPE2: | |
282 | case ACPI_PTYPE2_FIXED: | |
283 | case ACPI_PTYPE2_MIN: | |
284 | case ACPI_PTYPE2_COUNT: | |
285 | case ACPI_PTYPE2_FIX_VAR: | |
42f8fb75 BM |
286 | /* |
287 | * These types all return a single Package that consists of a | |
0a16d12a | 288 | * variable number of subpackages. |
42f8fb75 | 289 | * |
0a16d12a | 290 | * First, ensure that the first element is a subpackage. If not, |
42f8fb75 BM |
291 | * the BIOS may have incorrectly returned the object as a single |
292 | * package instead of a Package of Packages (a common error if | |
293 | * there is only one entry). We may be able to repair this by | |
294 | * wrapping the returned Package with a new outer Package. | |
295 | */ | |
296 | if (*elements | |
297 | && ((*elements)->common.type != ACPI_TYPE_PACKAGE)) { | |
298 | ||
299 | /* Create the new outer package and populate it */ | |
300 | ||
301 | status = | |
29a241cc | 302 | acpi_ns_wrap_with_package(info, return_object, |
42f8fb75 BM |
303 | return_object_ptr); |
304 | if (ACPI_FAILURE(status)) { | |
305 | return (status); | |
306 | } | |
307 | ||
308 | /* Update locals to point to the new package (of 1 element) */ | |
309 | ||
310 | return_object = *return_object_ptr; | |
311 | elements = return_object->package.elements; | |
312 | count = 1; | |
313 | } | |
314 | ||
0a16d12a | 315 | /* Examine the subpackages */ |
42f8fb75 BM |
316 | |
317 | status = | |
29a241cc | 318 | acpi_ns_check_package_list(info, package, elements, count); |
42f8fb75 BM |
319 | break; |
320 | ||
e34a7813 BM |
321 | case ACPI_PTYPE2_VAR_VAR: |
322 | /* | |
323 | * Returns a variable list of packages, each with a variable list | |
324 | * of objects. | |
325 | */ | |
326 | break; | |
327 | ||
b1272e1f MW |
328 | case ACPI_PTYPE2_UUID_PAIR: |
329 | ||
330 | /* The package must contain pairs of (UUID + type) */ | |
331 | ||
332 | if (count & 1) { | |
333 | expected_count = count + 1; | |
334 | goto package_too_small; | |
335 | } | |
336 | ||
337 | while (count > 0) { | |
338 | status = acpi_ns_check_object_type(info, elements, | |
339 | package->ret_info. | |
340 | object_type1, 0); | |
341 | if (ACPI_FAILURE(status)) { | |
342 | return (status); | |
343 | } | |
344 | ||
345 | /* Validate length of the UUID buffer */ | |
346 | ||
347 | if ((*elements)->buffer.length != 16) { | |
348 | ACPI_WARN_PREDEFINED((AE_INFO, | |
349 | info->full_pathname, | |
350 | info->node_flags, | |
351 | "Invalid length for UUID Buffer")); | |
352 | return (AE_AML_OPERAND_VALUE); | |
353 | } | |
354 | ||
355 | status = acpi_ns_check_object_type(info, elements + 1, | |
356 | package->ret_info. | |
357 | object_type2, 0); | |
358 | if (ACPI_FAILURE(status)) { | |
359 | return (status); | |
360 | } | |
361 | ||
362 | elements += 2; | |
363 | count -= 2; | |
364 | } | |
365 | break; | |
366 | ||
42f8fb75 BM |
367 | default: |
368 | ||
369 | /* Should not get here if predefined info table is correct */ | |
370 | ||
29a241cc BM |
371 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, |
372 | info->node_flags, | |
42f8fb75 BM |
373 | "Invalid internal return type in table entry: %X", |
374 | package->ret_info.type)); | |
375 | ||
376 | return (AE_AML_INTERNAL); | |
377 | } | |
378 | ||
379 | return (status); | |
380 | ||
10622bf8 | 381 | package_too_small: |
42f8fb75 BM |
382 | |
383 | /* Error exit for the case with an incorrect package count */ | |
384 | ||
29a241cc | 385 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags, |
42f8fb75 BM |
386 | "Return Package is too small - found %u elements, expected %u", |
387 | count, expected_count)); | |
388 | ||
389 | return (AE_AML_OPERAND_VALUE); | |
390 | } | |
391 | ||
392 | /******************************************************************************* | |
393 | * | |
394 | * FUNCTION: acpi_ns_check_package_list | |
395 | * | |
29a241cc | 396 | * PARAMETERS: info - Method execution information block |
42f8fb75 BM |
397 | * package - Pointer to package-specific info for method |
398 | * elements - Element list of parent package. All elements | |
399 | * of this list should be of type Package. | |
400 | * count - Count of subpackages | |
401 | * | |
402 | * RETURN: Status | |
403 | * | |
404 | * DESCRIPTION: Examine a list of subpackages | |
405 | * | |
406 | ******************************************************************************/ | |
407 | ||
408 | static acpi_status | |
29a241cc | 409 | acpi_ns_check_package_list(struct acpi_evaluate_info *info, |
42f8fb75 BM |
410 | const union acpi_predefined_info *package, |
411 | union acpi_operand_object **elements, u32 count) | |
412 | { | |
413 | union acpi_operand_object *sub_package; | |
414 | union acpi_operand_object **sub_elements; | |
415 | acpi_status status; | |
416 | u32 expected_count; | |
417 | u32 i; | |
418 | u32 j; | |
419 | ||
420 | /* | |
0a16d12a | 421 | * Validate each subpackage in the parent Package |
42f8fb75 | 422 | * |
0a16d12a | 423 | * NOTE: assumes list of subpackages contains no NULL elements. |
42f8fb75 BM |
424 | * Any NULL elements should have been removed by earlier call |
425 | * to acpi_ns_remove_null_elements. | |
426 | */ | |
427 | for (i = 0; i < count; i++) { | |
428 | sub_package = *elements; | |
429 | sub_elements = sub_package->package.elements; | |
29a241cc | 430 | info->parent_package = sub_package; |
42f8fb75 BM |
431 | |
432 | /* Each sub-object must be of type Package */ | |
433 | ||
29a241cc | 434 | status = acpi_ns_check_object_type(info, &sub_package, |
42f8fb75 BM |
435 | ACPI_RTYPE_PACKAGE, i); |
436 | if (ACPI_FAILURE(status)) { | |
437 | return (status); | |
438 | } | |
439 | ||
0a16d12a | 440 | /* Examine the different types of expected subpackages */ |
42f8fb75 | 441 | |
29a241cc | 442 | info->parent_package = sub_package; |
42f8fb75 BM |
443 | switch (package->ret_info.type) { |
444 | case ACPI_PTYPE2: | |
445 | case ACPI_PTYPE2_PKG_COUNT: | |
446 | case ACPI_PTYPE2_REV_FIXED: | |
447 | ||
448 | /* Each subpackage has a fixed number of elements */ | |
449 | ||
450 | expected_count = | |
451 | package->ret_info.count1 + package->ret_info.count2; | |
452 | if (sub_package->package.count < expected_count) { | |
453 | goto package_too_small; | |
454 | } | |
455 | ||
456 | status = | |
29a241cc | 457 | acpi_ns_check_package_elements(info, sub_elements, |
42f8fb75 BM |
458 | package->ret_info. |
459 | object_type1, | |
460 | package->ret_info. | |
461 | count1, | |
462 | package->ret_info. | |
463 | object_type2, | |
464 | package->ret_info. | |
465 | count2, 0); | |
466 | if (ACPI_FAILURE(status)) { | |
467 | return (status); | |
468 | } | |
469 | break; | |
470 | ||
471 | case ACPI_PTYPE2_FIX_VAR: | |
472 | /* | |
473 | * Each subpackage has a fixed number of elements and an | |
474 | * optional element | |
475 | */ | |
476 | expected_count = | |
477 | package->ret_info.count1 + package->ret_info.count2; | |
478 | if (sub_package->package.count < expected_count) { | |
479 | goto package_too_small; | |
480 | } | |
481 | ||
482 | status = | |
29a241cc | 483 | acpi_ns_check_package_elements(info, sub_elements, |
42f8fb75 BM |
484 | package->ret_info. |
485 | object_type1, | |
486 | package->ret_info. | |
487 | count1, | |
488 | package->ret_info. | |
489 | object_type2, | |
490 | sub_package->package. | |
491 | count - | |
492 | package->ret_info. | |
493 | count1, 0); | |
494 | if (ACPI_FAILURE(status)) { | |
495 | return (status); | |
496 | } | |
497 | break; | |
498 | ||
e34a7813 BM |
499 | case ACPI_PTYPE2_VAR_VAR: |
500 | /* | |
501 | * Each subpackage has a fixed or variable number of elements | |
502 | */ | |
503 | break; | |
504 | ||
42f8fb75 BM |
505 | case ACPI_PTYPE2_FIXED: |
506 | ||
0a16d12a | 507 | /* Each subpackage has a fixed length */ |
42f8fb75 BM |
508 | |
509 | expected_count = package->ret_info2.count; | |
510 | if (sub_package->package.count < expected_count) { | |
511 | goto package_too_small; | |
512 | } | |
513 | ||
0a16d12a | 514 | /* Check the type of each subpackage element */ |
42f8fb75 BM |
515 | |
516 | for (j = 0; j < expected_count; j++) { | |
517 | status = | |
29a241cc | 518 | acpi_ns_check_object_type(info, |
42f8fb75 BM |
519 | &sub_elements[j], |
520 | package-> | |
521 | ret_info2. | |
522 | object_type[j], | |
523 | j); | |
524 | if (ACPI_FAILURE(status)) { | |
525 | return (status); | |
526 | } | |
527 | } | |
528 | break; | |
529 | ||
530 | case ACPI_PTYPE2_MIN: | |
531 | ||
0a16d12a | 532 | /* Each subpackage has a variable but minimum length */ |
42f8fb75 BM |
533 | |
534 | expected_count = package->ret_info.count1; | |
535 | if (sub_package->package.count < expected_count) { | |
536 | goto package_too_small; | |
537 | } | |
538 | ||
0a16d12a | 539 | /* Check the type of each subpackage element */ |
42f8fb75 BM |
540 | |
541 | status = | |
29a241cc | 542 | acpi_ns_check_package_elements(info, sub_elements, |
42f8fb75 BM |
543 | package->ret_info. |
544 | object_type1, | |
545 | sub_package->package. | |
546 | count, 0, 0, 0); | |
547 | if (ACPI_FAILURE(status)) { | |
548 | return (status); | |
549 | } | |
550 | break; | |
551 | ||
552 | case ACPI_PTYPE2_COUNT: | |
42f8fb75 BM |
553 | /* |
554 | * First element is the (Integer) count of elements, including | |
555 | * the count field (the ACPI name is num_elements) | |
556 | */ | |
29a241cc | 557 | status = acpi_ns_check_object_type(info, sub_elements, |
42f8fb75 BM |
558 | ACPI_RTYPE_INTEGER, |
559 | 0); | |
560 | if (ACPI_FAILURE(status)) { | |
561 | return (status); | |
562 | } | |
563 | ||
564 | /* | |
565 | * Make sure package is large enough for the Count and is | |
566 | * is as large as the minimum size | |
567 | */ | |
568 | expected_count = (u32)(*sub_elements)->integer.value; | |
569 | if (sub_package->package.count < expected_count) { | |
570 | goto package_too_small; | |
571 | } | |
572 | if (sub_package->package.count < | |
573 | package->ret_info.count1) { | |
574 | expected_count = package->ret_info.count1; | |
575 | goto package_too_small; | |
576 | } | |
577 | if (expected_count == 0) { | |
578 | /* | |
579 | * Either the num_entries element was originally zero or it was | |
580 | * a NULL element and repaired to an Integer of value zero. | |
581 | * In either case, repair it by setting num_entries to be the | |
582 | * actual size of the subpackage. | |
583 | */ | |
584 | expected_count = sub_package->package.count; | |
585 | (*sub_elements)->integer.value = expected_count; | |
586 | } | |
587 | ||
0a16d12a | 588 | /* Check the type of each subpackage element */ |
42f8fb75 BM |
589 | |
590 | status = | |
29a241cc | 591 | acpi_ns_check_package_elements(info, |
42f8fb75 BM |
592 | (sub_elements + 1), |
593 | package->ret_info. | |
594 | object_type1, | |
595 | (expected_count - 1), | |
596 | 0, 0, 1); | |
597 | if (ACPI_FAILURE(status)) { | |
598 | return (status); | |
599 | } | |
600 | break; | |
601 | ||
602 | default: /* Should not get here, type was validated by caller */ | |
603 | ||
604 | return (AE_AML_INTERNAL); | |
605 | } | |
606 | ||
607 | elements++; | |
608 | } | |
609 | ||
610 | return (AE_OK); | |
611 | ||
10622bf8 | 612 | package_too_small: |
42f8fb75 | 613 | |
0a16d12a | 614 | /* The subpackage count was smaller than required */ |
42f8fb75 | 615 | |
29a241cc | 616 | ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags, |
0a16d12a | 617 | "Return SubPackage[%u] is too small - found %u elements, expected %u", |
42f8fb75 BM |
618 | i, sub_package->package.count, expected_count)); |
619 | ||
620 | return (AE_AML_OPERAND_VALUE); | |
621 | } | |
622 | ||
623 | /******************************************************************************* | |
624 | * | |
625 | * FUNCTION: acpi_ns_check_package_elements | |
626 | * | |
29a241cc | 627 | * PARAMETERS: info - Method execution information block |
42f8fb75 BM |
628 | * elements - Pointer to the package elements array |
629 | * type1 - Object type for first group | |
630 | * count1 - Count for first group | |
631 | * type2 - Object type for second group | |
632 | * count2 - Count for second group | |
633 | * start_index - Start of the first group of elements | |
634 | * | |
635 | * RETURN: Status | |
636 | * | |
637 | * DESCRIPTION: Check that all elements of a package are of the correct object | |
638 | * type. Supports up to two groups of different object types. | |
639 | * | |
640 | ******************************************************************************/ | |
641 | ||
642 | static acpi_status | |
29a241cc | 643 | acpi_ns_check_package_elements(struct acpi_evaluate_info *info, |
42f8fb75 BM |
644 | union acpi_operand_object **elements, |
645 | u8 type1, | |
646 | u32 count1, | |
647 | u8 type2, u32 count2, u32 start_index) | |
648 | { | |
649 | union acpi_operand_object **this_element = elements; | |
650 | acpi_status status; | |
651 | u32 i; | |
652 | ||
653 | /* | |
654 | * Up to two groups of package elements are supported by the data | |
655 | * structure. All elements in each group must be of the same type. | |
656 | * The second group can have a count of zero. | |
657 | */ | |
658 | for (i = 0; i < count1; i++) { | |
29a241cc | 659 | status = acpi_ns_check_object_type(info, this_element, |
42f8fb75 BM |
660 | type1, i + start_index); |
661 | if (ACPI_FAILURE(status)) { | |
662 | return (status); | |
663 | } | |
664 | this_element++; | |
665 | } | |
666 | ||
667 | for (i = 0; i < count2; i++) { | |
29a241cc | 668 | status = acpi_ns_check_object_type(info, this_element, |
42f8fb75 BM |
669 | type2, |
670 | (i + count1 + start_index)); | |
671 | if (ACPI_FAILURE(status)) { | |
672 | return (status); | |
673 | } | |
674 | this_element++; | |
675 | } | |
676 | ||
677 | return (AE_OK); | |
678 | } |