blob: 456cc859f8698ecac208e20aa6e851a2d2a86237 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*******************************************************************************
2 *
3 * Module Name: nssearch - Namespace search
4 *
5 ******************************************************************************/
6
7/*
Bob Moore77848132012-01-12 13:27:23 +08008 * Copyright (C) 2000 - 2012, Intel Corp.
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#include <acpi/acpi.h>
Len Browne2f7a772009-01-09 00:30:03 -050045#include "accommon.h"
46#include "acnamesp.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
Bob Mooree4c1ebf2009-04-22 13:02:06 +080048#ifdef ACPI_ASL_COMPILER
49#include "amlcode.h"
50#endif
51
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#define _COMPONENT ACPI_NAMESPACE
Len Brown4be44fc2005-08-05 00:44:28 -040053ACPI_MODULE_NAME("nssearch")
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
Robert Moore44f6c012005-04-18 22:49:35 -040055/* Local prototypes */
Robert Moore44f6c012005-04-18 22:49:35 -040056static acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -040057acpi_ns_search_parent_tree(u32 target_name,
58 struct acpi_namespace_node *node,
59 acpi_object_type type,
60 struct acpi_namespace_node **return_node);
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
62/*******************************************************************************
63 *
Bob Moore41195322006-05-26 16:36:00 -040064 * FUNCTION: acpi_ns_search_one_scope
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 *
Robert Moore44f6c012005-04-18 22:49:35 -040066 * PARAMETERS: target_name - Ascii ACPI name to search for
Bob Moore41195322006-05-26 16:36:00 -040067 * parent_node - Starting node where search will begin
Bob Mooreba494be2012-07-12 09:40:10 +080068 * type - Object type to match
Robert Moore44f6c012005-04-18 22:49:35 -040069 * return_node - Where the matched Named obj is returned
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 *
71 * RETURN: Status
72 *
Bob Moore41195322006-05-26 16:36:00 -040073 * DESCRIPTION: Search a single level of the namespace. Performs a
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 * simple search of the specified level, and does not add
75 * entries or search parents.
76 *
77 *
78 * Named object lists are built (and subsequently dumped) in the
79 * order in which the names are encountered during the namespace load;
80 *
81 * All namespace searching is linear in this implementation, but
82 * could be easily modified to support any improved search
Bob Moore41195322006-05-26 16:36:00 -040083 * algorithm. However, the linear search was chosen for simplicity
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 * and because the trees are small and the other interpreter
85 * execution overhead is relatively high.
86 *
Bob Moore41195322006-05-26 16:36:00 -040087 * Note: CPU execution analysis has shown that the AML interpreter spends
88 * a very small percentage of its time searching the namespace. Therefore,
89 * the linear search seems to be sufficient, as there would seem to be
90 * little value in improving the search.
91 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 ******************************************************************************/
93
94acpi_status
Bob Moore41195322006-05-26 16:36:00 -040095acpi_ns_search_one_scope(u32 target_name,
96 struct acpi_namespace_node *parent_node,
97 acpi_object_type type,
98 struct acpi_namespace_node **return_node)
Linus Torvalds1da177e2005-04-16 15:20:36 -070099{
Bob Moore41195322006-05-26 16:36:00 -0400100 struct acpi_namespace_node *node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
Bob Moore41195322006-05-26 16:36:00 -0400102 ACPI_FUNCTION_TRACE(ns_search_one_scope);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
104#ifdef ACPI_DEBUG_OUTPUT
105 if (ACPI_LV_NAMES & acpi_dbg_level) {
Len Brown4be44fc2005-08-05 00:44:28 -0400106 char *scope_name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
Bob Moore41195322006-05-26 16:36:00 -0400108 scope_name = acpi_ns_get_external_pathname(parent_node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 if (scope_name) {
Len Brown4be44fc2005-08-05 00:44:28 -0400110 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
111 "Searching %s (%p) For [%4.4s] (%s)\n",
Bob Moore41195322006-05-26 16:36:00 -0400112 scope_name, parent_node,
113 ACPI_CAST_PTR(char, &target_name),
Len Brown4be44fc2005-08-05 00:44:28 -0400114 acpi_ut_get_type_name(type)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115
Bob Moore83135242006-10-03 00:00:00 -0400116 ACPI_FREE(scope_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 }
118 }
119#endif
120
121 /*
122 * Search for name at this namespace level, which is to say that we
123 * must search for the name among the children of this object
124 */
Bob Moore41195322006-05-26 16:36:00 -0400125 node = parent_node->child;
126 while (node) {
Bob Moore52fc0b02006-10-02 00:00:00 -0400127
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 /* Check for match against the name */
129
Bob Moore41195322006-05-26 16:36:00 -0400130 if (node->name.integer == target_name) {
Bob Moore52fc0b02006-10-02 00:00:00 -0400131
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 /* Resolve a control method alias if any */
133
Bob Moore41195322006-05-26 16:36:00 -0400134 if (acpi_ns_get_type(node) ==
Len Brown4be44fc2005-08-05 00:44:28 -0400135 ACPI_TYPE_LOCAL_METHOD_ALIAS) {
Bob Moore41195322006-05-26 16:36:00 -0400136 node =
Len Brown4be44fc2005-08-05 00:44:28 -0400137 ACPI_CAST_PTR(struct acpi_namespace_node,
Bob Moore41195322006-05-26 16:36:00 -0400138 node->object);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 }
140
Bob Moore793c2382006-03-31 00:00:00 -0500141 /* Found matching entry */
142
Len Brown4be44fc2005-08-05 00:44:28 -0400143 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
144 "Name [%4.4s] (%s) %p found in scope [%4.4s] %p\n",
Bob Mooredefba1d2005-12-16 17:05:00 -0500145 ACPI_CAST_PTR(char, &target_name),
Bob Moore41195322006-05-26 16:36:00 -0400146 acpi_ut_get_type_name(node->type),
147 node,
148 acpi_ut_get_node_name(parent_node),
149 parent_node));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
Bob Moore41195322006-05-26 16:36:00 -0400151 *return_node = node;
Len Brown4be44fc2005-08-05 00:44:28 -0400152 return_ACPI_STATUS(AE_OK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 }
154
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 /* Didn't match name, move on to the next peer object */
156
Bob Moore41195322006-05-26 16:36:00 -0400157 node = node->peer;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 }
159
160 /* Searched entire namespace level, not found */
161
Len Brown4be44fc2005-08-05 00:44:28 -0400162 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
Bob Moored4913dc2009-03-06 10:05:18 +0800163 "Name [%4.4s] (%s) not found in search in scope [%4.4s] "
164 "%p first child %p\n",
Bob Mooredefba1d2005-12-16 17:05:00 -0500165 ACPI_CAST_PTR(char, &target_name),
166 acpi_ut_get_type_name(type),
Bob Moore41195322006-05-26 16:36:00 -0400167 acpi_ut_get_node_name(parent_node), parent_node,
168 parent_node->child));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
Len Brown4be44fc2005-08-05 00:44:28 -0400170 return_ACPI_STATUS(AE_NOT_FOUND);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171}
172
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173/*******************************************************************************
174 *
175 * FUNCTION: acpi_ns_search_parent_tree
176 *
Robert Moore44f6c012005-04-18 22:49:35 -0400177 * PARAMETERS: target_name - Ascii ACPI name to search for
Bob Mooreba494be2012-07-12 09:40:10 +0800178 * node - Starting node where search will begin
179 * type - Object type to match
Robert Moore44f6c012005-04-18 22:49:35 -0400180 * return_node - Where the matched Node is returned
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 *
182 * RETURN: Status
183 *
184 * DESCRIPTION: Called when a name has not been found in the current namespace
Bob Moore41195322006-05-26 16:36:00 -0400185 * level. Before adding it or giving up, ACPI scope rules require
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 * searching enclosing scopes in cases identified by acpi_ns_local().
187 *
188 * "A name is located by finding the matching name in the current
189 * name space, and then in the parent name space. If the parent
190 * name space does not contain the name, the search continues
191 * recursively until either the name is found or the name space
Bob Moore41195322006-05-26 16:36:00 -0400192 * does not have a parent (the root of the name space). This
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 * indicates that the name is not found" (From ACPI Specification,
194 * section 5.3)
195 *
196 ******************************************************************************/
197
198static acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400199acpi_ns_search_parent_tree(u32 target_name,
200 struct acpi_namespace_node *node,
201 acpi_object_type type,
202 struct acpi_namespace_node **return_node)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203{
Len Brown4be44fc2005-08-05 00:44:28 -0400204 acpi_status status;
205 struct acpi_namespace_node *parent_node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206
Bob Mooreb229cf92006-04-21 17:15:00 -0400207 ACPI_FUNCTION_TRACE(ns_search_parent_tree);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208
Alexey Starikovskiyc45b5c02010-05-26 11:53:07 +0800209 parent_node = node->parent;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
211 /*
212 * If there is no parent (i.e., we are at the root) or type is "local",
213 * we won't be searching the parent tree.
214 */
215 if (!parent_node) {
Len Brown4be44fc2005-08-05 00:44:28 -0400216 ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "[%4.4s] has no parent\n",
Bob Mooredefba1d2005-12-16 17:05:00 -0500217 ACPI_CAST_PTR(char, &target_name)));
Len Brown4be44fc2005-08-05 00:44:28 -0400218 return_ACPI_STATUS(AE_NOT_FOUND);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 }
220
Len Brown4be44fc2005-08-05 00:44:28 -0400221 if (acpi_ns_local(type)) {
222 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
223 "[%4.4s] type [%s] must be local to this scope (no parent search)\n",
Bob Mooredefba1d2005-12-16 17:05:00 -0500224 ACPI_CAST_PTR(char, &target_name),
Len Brown4be44fc2005-08-05 00:44:28 -0400225 acpi_ut_get_type_name(type)));
226 return_ACPI_STATUS(AE_NOT_FOUND);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 }
228
229 /* Search the parent tree */
230
Len Brown4be44fc2005-08-05 00:44:28 -0400231 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
232 "Searching parent [%4.4s] for [%4.4s]\n",
233 acpi_ut_get_node_name(parent_node),
Bob Mooredefba1d2005-12-16 17:05:00 -0500234 ACPI_CAST_PTR(char, &target_name)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
Bob Moored4913dc2009-03-06 10:05:18 +0800236 /* Search parents until target is found or we have backed up to the root */
237
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 while (parent_node) {
239 /*
Bob Moore41195322006-05-26 16:36:00 -0400240 * Search parent scope. Use TYPE_ANY because we don't care about the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 * object type at this point, we only care about the existence of
Bob Moore41195322006-05-26 16:36:00 -0400242 * the actual name we are searching for. Typechecking comes later.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 */
Bob Moore41195322006-05-26 16:36:00 -0400244 status =
245 acpi_ns_search_one_scope(target_name, parent_node,
Len Brown4be44fc2005-08-05 00:44:28 -0400246 ACPI_TYPE_ANY, return_node);
247 if (ACPI_SUCCESS(status)) {
248 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 }
250
Bob Moore793c2382006-03-31 00:00:00 -0500251 /* Not found here, go up another level (until we reach the root) */
252
Alexey Starikovskiyc45b5c02010-05-26 11:53:07 +0800253 parent_node = parent_node->parent;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 }
255
256 /* Not found in parent tree */
257
Len Brown4be44fc2005-08-05 00:44:28 -0400258 return_ACPI_STATUS(AE_NOT_FOUND);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259}
260
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261/*******************************************************************************
262 *
263 * FUNCTION: acpi_ns_search_and_enter
264 *
265 * PARAMETERS: target_name - Ascii ACPI name to search for (4 chars)
266 * walk_state - Current state of the walk
Bob Mooreba494be2012-07-12 09:40:10 +0800267 * node - Starting node where search will begin
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 * interpreter_mode - Add names only in ACPI_MODE_LOAD_PASS_x.
269 * Otherwise,search only.
Bob Mooreba494be2012-07-12 09:40:10 +0800270 * type - Object type to match
271 * flags - Flags describing the search restrictions
Robert Moore44f6c012005-04-18 22:49:35 -0400272 * return_node - Where the Node is returned
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 *
274 * RETURN: Status
275 *
276 * DESCRIPTION: Search for a name segment in a single namespace level,
Bob Moore41195322006-05-26 16:36:00 -0400277 * optionally adding it if it is not found. If the passed
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 * Type is not Any and the type previously stored in the
279 * entry was Any (i.e. unknown), update the stored type.
280 *
281 * In ACPI_IMODE_EXECUTE, search only.
282 * In other modes, search and add if not found.
283 *
284 ******************************************************************************/
285
286acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400287acpi_ns_search_and_enter(u32 target_name,
288 struct acpi_walk_state *walk_state,
289 struct acpi_namespace_node *node,
290 acpi_interpreter_mode interpreter_mode,
291 acpi_object_type type,
292 u32 flags, struct acpi_namespace_node **return_node)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293{
Len Brown4be44fc2005-08-05 00:44:28 -0400294 acpi_status status;
295 struct acpi_namespace_node *new_node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
Bob Mooreb229cf92006-04-21 17:15:00 -0400297 ACPI_FUNCTION_TRACE(ns_search_and_enter);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
299 /* Parameter validation */
300
301 if (!node || !target_name || !return_node) {
Bob Mooreb8e4d892006-01-27 16:43:00 -0500302 ACPI_ERROR((AE_INFO,
Bob Mooref6a22b02010-03-05 17:56:40 +0800303 "Null parameter: Node %p Name 0x%X ReturnNode %p",
Bob Mooreb8e4d892006-01-27 16:43:00 -0500304 node, target_name, return_node));
Len Brown4be44fc2005-08-05 00:44:28 -0400305 return_ACPI_STATUS(AE_BAD_PARAMETER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 }
307
Bob Moore793c2382006-03-31 00:00:00 -0500308 /*
309 * Name must consist of valid ACPI characters. We will repair the name if
310 * necessary because we don't want to abort because of this, but we want
311 * all namespace names to be printable. A warning message is appropriate.
312 *
313 * This issue came up because there are in fact machines that exhibit
314 * this problem, and we want to be able to enable ACPI support for them,
315 * even though there are a few bad names.
316 */
Len Brown4be44fc2005-08-05 00:44:28 -0400317 if (!acpi_ut_valid_acpi_name(target_name)) {
Bob Moore3d81b232007-02-02 19:48:19 +0300318 target_name =
319 acpi_ut_repair_name(ACPI_CAST_PTR(char, &target_name));
Bob Moore793c2382006-03-31 00:00:00 -0500320
321 /* Report warning only if in strict mode or debug mode */
322
323 if (!acpi_gbl_enable_interpreter_slack) {
324 ACPI_WARNING((AE_INFO,
325 "Found bad character(s) in name, repaired: [%4.4s]\n",
326 ACPI_CAST_PTR(char, &target_name)));
327 } else {
Bob Moore23d3e052008-09-28 15:00:47 +0800328 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
Bob Moore793c2382006-03-31 00:00:00 -0500329 "Found bad character(s) in name, repaired: [%4.4s]\n",
330 ACPI_CAST_PTR(char, &target_name)));
331 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 }
333
334 /* Try to find the name in the namespace level specified by the caller */
335
336 *return_node = ACPI_ENTRY_NOT_FOUND;
Bob Moore41195322006-05-26 16:36:00 -0400337 status = acpi_ns_search_one_scope(target_name, node, type, return_node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 if (status != AE_NOT_FOUND) {
339 /*
340 * If we found it AND the request specifies that a find is an error,
341 * return the error
342 */
Len Brown4be44fc2005-08-05 00:44:28 -0400343 if ((status == AE_OK) && (flags & ACPI_NS_ERROR_IF_FOUND)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 status = AE_ALREADY_EXISTS;
345 }
346
Bob Moore793c2382006-03-31 00:00:00 -0500347 /* Either found it or there was an error: finished either way */
348
Len Brown4be44fc2005-08-05 00:44:28 -0400349 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 }
351
352 /*
Bob Moore41195322006-05-26 16:36:00 -0400353 * The name was not found. If we are NOT performing the first pass
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 * (name entry) of loading the namespace, search the parent tree (all the
355 * way to the root if necessary.) We don't want to perform the parent
Bob Moore41195322006-05-26 16:36:00 -0400356 * search when the namespace is actually being loaded. We want to perform
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 * the search when namespace references are being resolved (load pass 2)
358 * and during the execution phase.
359 */
360 if ((interpreter_mode != ACPI_IMODE_LOAD_PASS1) &&
Len Brown4be44fc2005-08-05 00:44:28 -0400361 (flags & ACPI_NS_SEARCH_PARENT)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 /*
363 * Not found at this level - search parent tree according to the
364 * ACPI specification
365 */
Len Brown4be44fc2005-08-05 00:44:28 -0400366 status =
367 acpi_ns_search_parent_tree(target_name, node, type,
368 return_node);
369 if (ACPI_SUCCESS(status)) {
370 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 }
372 }
373
Bob Moore793c2382006-03-31 00:00:00 -0500374 /* In execute mode, just search, never add names. Exit now */
375
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 if (interpreter_mode == ACPI_IMODE_EXECUTE) {
Len Brown4be44fc2005-08-05 00:44:28 -0400377 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
378 "%4.4s Not found in %p [Not adding]\n",
Bob Mooredefba1d2005-12-16 17:05:00 -0500379 ACPI_CAST_PTR(char, &target_name), node));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380
Len Brown4be44fc2005-08-05 00:44:28 -0400381 return_ACPI_STATUS(AE_NOT_FOUND);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 }
383
384 /* Create the new named object */
385
Len Brown4be44fc2005-08-05 00:44:28 -0400386 new_node = acpi_ns_create_node(target_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 if (!new_node) {
Len Brown4be44fc2005-08-05 00:44:28 -0400388 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 }
Bob Moore958dd242006-05-12 17:12:00 -0400390#ifdef ACPI_ASL_COMPILER
Bob Moored4913dc2009-03-06 10:05:18 +0800391
392 /* Node is an object defined by an External() statement */
393
Bob Moore958dd242006-05-12 17:12:00 -0400394 if (flags & ACPI_NS_EXTERNAL) {
395 new_node->flags |= ANOBJ_IS_EXTERNAL;
396 }
397#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398
Bob Moored1fdda832007-02-02 19:48:21 +0300399 if (flags & ACPI_NS_TEMPORARY) {
400 new_node->flags |= ANOBJ_TEMPORARY;
401 }
402
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 /* Install the new object into the parent's list of children */
404
Len Brown4be44fc2005-08-05 00:44:28 -0400405 acpi_ns_install_node(walk_state, node, new_node, type);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 *return_node = new_node;
Len Brown4be44fc2005-08-05 00:44:28 -0400407 return_ACPI_STATUS(AE_OK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408}