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1 | /******************************************************************************* |
1 | /******************************************************************************* |
2 | * |
2 | * |
3 | * Module Name: nsnames - Name manipulation and search |
3 | * Module Name: nsnames - Name manipulation and search |
4 | * |
4 | * |
5 | ******************************************************************************/ |
5 | ******************************************************************************/ |
6 | 6 | ||
7 | /****************************************************************************** |
7 | /****************************************************************************** |
8 | * |
8 | * |
9 | * 1. Copyright Notice |
9 | * 1. Copyright Notice |
10 | * |
10 | * |
11 | * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
11 | * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp. |
12 | * All rights reserved. |
12 | * All rights reserved. |
13 | * |
13 | * |
14 | * 2. License |
14 | * 2. License |
15 | * |
15 | * |
16 | * 2.1. This is your license from Intel Corp. under its intellectual property |
16 | * 2.1. This is your license from Intel Corp. under its intellectual property |
17 | * rights. You may have additional license terms from the party that provided |
17 | * rights. You may have additional license terms from the party that provided |
18 | * you this software, covering your right to use that party's intellectual |
18 | * you this software, covering your right to use that party's intellectual |
19 | * property rights. |
19 | * property rights. |
20 | * |
20 | * |
21 | * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
21 | * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
22 | * copy of the source code appearing in this file ("Covered Code") an |
22 | * copy of the source code appearing in this file ("Covered Code") an |
23 | * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
23 | * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
24 | * base code distributed originally by Intel ("Original Intel Code") to copy, |
24 | * base code distributed originally by Intel ("Original Intel Code") to copy, |
25 | * make derivatives, distribute, use and display any portion of the Covered |
25 | * make derivatives, distribute, use and display any portion of the Covered |
26 | * Code in any form, with the right to sublicense such rights; and |
26 | * Code in any form, with the right to sublicense such rights; and |
27 | * |
27 | * |
28 | * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
28 | * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
29 | * license (with the right to sublicense), under only those claims of Intel |
29 | * license (with the right to sublicense), under only those claims of Intel |
30 | * patents that are infringed by the Original Intel Code, to make, use, sell, |
30 | * patents that are infringed by the Original Intel Code, to make, use, sell, |
31 | * offer to sell, and import the Covered Code and derivative works thereof |
31 | * offer to sell, and import the Covered Code and derivative works thereof |
32 | * solely to the minimum extent necessary to exercise the above copyright |
32 | * solely to the minimum extent necessary to exercise the above copyright |
33 | * license, and in no event shall the patent license extend to any additions |
33 | * license, and in no event shall the patent license extend to any additions |
34 | * to or modifications of the Original Intel Code. No other license or right |
34 | * to or modifications of the Original Intel Code. No other license or right |
35 | * is granted directly or by implication, estoppel or otherwise; |
35 | * is granted directly or by implication, estoppel or otherwise; |
36 | * |
36 | * |
37 | * The above copyright and patent license is granted only if the following |
37 | * The above copyright and patent license is granted only if the following |
38 | * conditions are met: |
38 | * conditions are met: |
39 | * |
39 | * |
40 | * 3. Conditions |
40 | * 3. Conditions |
41 | * |
41 | * |
42 | * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
42 | * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
43 | * Redistribution of source code of any substantial portion of the Covered |
43 | * Redistribution of source code of any substantial portion of the Covered |
44 | * Code or modification with rights to further distribute source must include |
44 | * Code or modification with rights to further distribute source must include |
45 | * the above Copyright Notice, the above License, this list of Conditions, |
45 | * the above Copyright Notice, the above License, this list of Conditions, |
46 | * and the following Disclaimer and Export Compliance provision. In addition, |
46 | * and the following Disclaimer and Export Compliance provision. In addition, |
47 | * Licensee must cause all Covered Code to which Licensee contributes to |
47 | * Licensee must cause all Covered Code to which Licensee contributes to |
48 | * contain a file documenting the changes Licensee made to create that Covered |
48 | * contain a file documenting the changes Licensee made to create that Covered |
49 | * Code and the date of any change. Licensee must include in that file the |
49 | * Code and the date of any change. Licensee must include in that file the |
50 | * documentation of any changes made by any predecessor Licensee. Licensee |
50 | * documentation of any changes made by any predecessor Licensee. Licensee |
51 | * must include a prominent statement that the modification is derived, |
51 | * must include a prominent statement that the modification is derived, |
52 | * directly or indirectly, from Original Intel Code. |
52 | * directly or indirectly, from Original Intel Code. |
53 | * |
53 | * |
54 | * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
54 | * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
55 | * Redistribution of source code of any substantial portion of the Covered |
55 | * Redistribution of source code of any substantial portion of the Covered |
56 | * Code or modification without rights to further distribute source must |
56 | * Code or modification without rights to further distribute source must |
57 | * include the following Disclaimer and Export Compliance provision in the |
57 | * include the following Disclaimer and Export Compliance provision in the |
58 | * documentation and/or other materials provided with distribution. In |
58 | * documentation and/or other materials provided with distribution. In |
59 | * addition, Licensee may not authorize further sublicense of source of any |
59 | * addition, Licensee may not authorize further sublicense of source of any |
60 | * portion of the Covered Code, and must include terms to the effect that the |
60 | * portion of the Covered Code, and must include terms to the effect that the |
61 | * license from Licensee to its licensee is limited to the intellectual |
61 | * license from Licensee to its licensee is limited to the intellectual |
62 | * property embodied in the software Licensee provides to its licensee, and |
62 | * property embodied in the software Licensee provides to its licensee, and |
63 | * not to intellectual property embodied in modifications its licensee may |
63 | * not to intellectual property embodied in modifications its licensee may |
64 | * make. |
64 | * make. |
65 | * |
65 | * |
66 | * 3.3. Redistribution of Executable. Redistribution in executable form of any |
66 | * 3.3. Redistribution of Executable. Redistribution in executable form of any |
67 | * substantial portion of the Covered Code or modification must reproduce the |
67 | * substantial portion of the Covered Code or modification must reproduce the |
68 | * above Copyright Notice, and the following Disclaimer and Export Compliance |
68 | * above Copyright Notice, and the following Disclaimer and Export Compliance |
69 | * provision in the documentation and/or other materials provided with the |
69 | * provision in the documentation and/or other materials provided with the |
70 | * distribution. |
70 | * distribution. |
71 | * |
71 | * |
72 | * 3.4. Intel retains all right, title, and interest in and to the Original |
72 | * 3.4. Intel retains all right, title, and interest in and to the Original |
73 | * Intel Code. |
73 | * Intel Code. |
74 | * |
74 | * |
75 | * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
75 | * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
76 | * Intel shall be used in advertising or otherwise to promote the sale, use or |
76 | * Intel shall be used in advertising or otherwise to promote the sale, use or |
77 | * other dealings in products derived from or relating to the Covered Code |
77 | * other dealings in products derived from or relating to the Covered Code |
78 | * without prior written authorization from Intel. |
78 | * without prior written authorization from Intel. |
79 | * |
79 | * |
80 | * 4. Disclaimer and Export Compliance |
80 | * 4. Disclaimer and Export Compliance |
81 | * |
81 | * |
82 | * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
82 | * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
83 | * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
83 | * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
84 | * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
84 | * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
85 | * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
85 | * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
86 | * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
86 | * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
87 | * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
87 | * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
88 | * PARTICULAR PURPOSE. |
88 | * PARTICULAR PURPOSE. |
89 | * |
89 | * |
90 | * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
90 | * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
91 | * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
91 | * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
92 | * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
92 | * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
93 | * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
93 | * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
94 | * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
94 | * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
95 | * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
95 | * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
96 | * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
96 | * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
97 | * LIMITED REMEDY. |
97 | * LIMITED REMEDY. |
98 | * |
98 | * |
99 | * 4.3. Licensee shall not export, either directly or indirectly, any of this |
99 | * 4.3. Licensee shall not export, either directly or indirectly, any of this |
100 | * software or system incorporating such software without first obtaining any |
100 | * software or system incorporating such software without first obtaining any |
101 | * required license or other approval from the U. S. Department of Commerce or |
101 | * required license or other approval from the U. S. Department of Commerce or |
102 | * any other agency or department of the United States Government. In the |
102 | * any other agency or department of the United States Government. In the |
103 | * event Licensee exports any such software from the United States or |
103 | * event Licensee exports any such software from the United States or |
104 | * re-exports any such software from a foreign destination, Licensee shall |
104 | * re-exports any such software from a foreign destination, Licensee shall |
105 | * ensure that the distribution and export/re-export of the software is in |
105 | * ensure that the distribution and export/re-export of the software is in |
106 | * compliance with all laws, regulations, orders, or other restrictions of the |
106 | * compliance with all laws, regulations, orders, or other restrictions of the |
107 | * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
107 | * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
108 | * any of its subsidiaries will export/re-export any technical data, process, |
108 | * any of its subsidiaries will export/re-export any technical data, process, |
109 | * software, or service, directly or indirectly, to any country for which the |
109 | * software, or service, directly or indirectly, to any country for which the |
110 | * United States government or any agency thereof requires an export license, |
110 | * United States government or any agency thereof requires an export license, |
111 | * other governmental approval, or letter of assurance, without first obtaining |
111 | * other governmental approval, or letter of assurance, without first obtaining |
112 | * such license, approval or letter. |
112 | * such license, approval or letter. |
113 | * |
113 | * |
114 | *****************************************************************************/ |
114 | *****************************************************************************/ |
115 | 115 | ||
116 | #define __NSNAMES_C__ |
116 | #define __NSNAMES_C__ |
117 | 117 | ||
118 | #include "acpi.h" |
118 | #include "acpi.h" |
119 | #include "accommon.h" |
119 | #include "accommon.h" |
120 | #include "amlcode.h" |
120 | #include "amlcode.h" |
121 | #include "acnamesp.h" |
121 | #include "acnamesp.h" |
122 | 122 | ||
123 | 123 | ||
124 | #define _COMPONENT ACPI_NAMESPACE |
124 | #define _COMPONENT ACPI_NAMESPACE |
125 | ACPI_MODULE_NAME ("nsnames") |
125 | ACPI_MODULE_NAME ("nsnames") |
126 | 126 | ||
127 | 127 | ||
128 | /******************************************************************************* |
128 | /******************************************************************************* |
129 | * |
129 | * |
130 | * FUNCTION: AcpiNsBuildExternalPath |
130 | * FUNCTION: AcpiNsBuildExternalPath |
131 | * |
131 | * |
132 | * PARAMETERS: Node - NS node whose pathname is needed |
132 | * PARAMETERS: Node - NS node whose pathname is needed |
133 | * Size - Size of the pathname |
133 | * Size - Size of the pathname |
134 | * *NameBuffer - Where to return the pathname |
134 | * *NameBuffer - Where to return the pathname |
135 | * |
135 | * |
136 | * RETURN: Status |
136 | * RETURN: Status |
137 | * Places the pathname into the NameBuffer, in external format |
137 | * Places the pathname into the NameBuffer, in external format |
138 | * (name segments separated by path separators) |
138 | * (name segments separated by path separators) |
139 | * |
139 | * |
140 | * DESCRIPTION: Generate a full pathaname |
140 | * DESCRIPTION: Generate a full pathaname |
141 | * |
141 | * |
142 | ******************************************************************************/ |
142 | ******************************************************************************/ |
143 | 143 | ||
144 | ACPI_STATUS |
144 | ACPI_STATUS |
145 | AcpiNsBuildExternalPath ( |
145 | AcpiNsBuildExternalPath ( |
146 | ACPI_NAMESPACE_NODE *Node, |
146 | ACPI_NAMESPACE_NODE *Node, |
147 | ACPI_SIZE Size, |
147 | ACPI_SIZE Size, |
148 | char *NameBuffer) |
148 | char *NameBuffer) |
149 | { |
149 | { |
150 | ACPI_SIZE Index; |
150 | ACPI_SIZE Index; |
151 | ACPI_NAMESPACE_NODE *ParentNode; |
151 | ACPI_NAMESPACE_NODE *ParentNode; |
152 | 152 | ||
153 | 153 | ||
154 | ACPI_FUNCTION_ENTRY (); |
154 | ACPI_FUNCTION_ENTRY (); |
155 | 155 | ||
156 | 156 | ||
157 | /* Special case for root */ |
157 | /* Special case for root */ |
158 | 158 | ||
159 | Index = Size - 1; |
159 | Index = Size - 1; |
160 | if (Index < ACPI_NAME_SIZE) |
160 | if (Index < ACPI_NAME_SIZE) |
161 | { |
161 | { |
162 | NameBuffer[0] = AML_ROOT_PREFIX; |
162 | NameBuffer[0] = AML_ROOT_PREFIX; |
163 | NameBuffer[1] = 0; |
163 | NameBuffer[1] = 0; |
164 | return (AE_OK); |
164 | return (AE_OK); |
165 | } |
165 | } |
166 | 166 | ||
167 | /* Store terminator byte, then build name backwards */ |
167 | /* Store terminator byte, then build name backwards */ |
168 | 168 | ||
169 | ParentNode = Node; |
169 | ParentNode = Node; |
170 | NameBuffer[Index] = 0; |
170 | NameBuffer[Index] = 0; |
171 | 171 | ||
172 | while ((Index > ACPI_NAME_SIZE) && (ParentNode != AcpiGbl_RootNode)) |
172 | while ((Index > ACPI_NAME_SIZE) && (ParentNode != AcpiGbl_RootNode)) |
173 | { |
173 | { |
174 | Index -= ACPI_NAME_SIZE; |
174 | Index -= ACPI_NAME_SIZE; |
175 | 175 | ||
176 | /* Put the name into the buffer */ |
176 | /* Put the name into the buffer */ |
177 | 177 | ||
178 | ACPI_MOVE_32_TO_32 ((NameBuffer + Index), &ParentNode->Name); |
178 | ACPI_MOVE_32_TO_32 ((NameBuffer + Index), &ParentNode->Name); |
179 | ParentNode = ParentNode->Parent; |
179 | ParentNode = ParentNode->Parent; |
180 | 180 | ||
181 | /* Prefix name with the path separator */ |
181 | /* Prefix name with the path separator */ |
182 | 182 | ||
183 | Index--; |
183 | Index--; |
184 | NameBuffer[Index] = ACPI_PATH_SEPARATOR; |
184 | NameBuffer[Index] = ACPI_PATH_SEPARATOR; |
185 | } |
185 | } |
186 | 186 | ||
187 | /* Overwrite final separator with the root prefix character */ |
187 | /* Overwrite final separator with the root prefix character */ |
188 | 188 | ||
189 | NameBuffer[Index] = AML_ROOT_PREFIX; |
189 | NameBuffer[Index] = AML_ROOT_PREFIX; |
190 | 190 | ||
191 | if (Index != 0) |
191 | if (Index != 0) |
192 | { |
192 | { |
193 | ACPI_ERROR ((AE_INFO, |
193 | ACPI_ERROR ((AE_INFO, |
194 | "Could not construct external pathname; index=%u, size=%u, Path=%s", |
194 | "Could not construct external pathname; index=%u, size=%u, Path=%s", |
195 | (UINT32) Index, (UINT32) Size, &NameBuffer[Size])); |
195 | (UINT32) Index, (UINT32) Size, &NameBuffer[Size])); |
196 | 196 | ||
197 | return (AE_BAD_PARAMETER); |
197 | return (AE_BAD_PARAMETER); |
198 | } |
198 | } |
199 | 199 | ||
200 | return (AE_OK); |
200 | return (AE_OK); |
201 | } |
201 | } |
202 | 202 | ||
203 | 203 | ||
204 | /******************************************************************************* |
204 | /******************************************************************************* |
205 | * |
205 | * |
206 | * FUNCTION: AcpiNsGetExternalPathname |
206 | * FUNCTION: AcpiNsGetExternalPathname |
207 | * |
207 | * |
208 | * PARAMETERS: Node - Namespace node whose pathname is needed |
208 | * PARAMETERS: Node - Namespace node whose pathname is needed |
209 | * |
209 | * |
210 | * RETURN: Pointer to storage containing the fully qualified name of |
210 | * RETURN: Pointer to storage containing the fully qualified name of |
211 | * the node, In external format (name segments separated by path |
211 | * the node, In external format (name segments separated by path |
212 | * separators.) |
212 | * separators.) |
213 | * |
213 | * |
214 | * DESCRIPTION: Used to obtain the full pathname to a namespace node, usually |
214 | * DESCRIPTION: Used to obtain the full pathname to a namespace node, usually |
215 | * for error and debug statements. |
215 | * for error and debug statements. |
216 | * |
216 | * |
217 | ******************************************************************************/ |
217 | ******************************************************************************/ |
218 | 218 | ||
219 | char * |
219 | char * |
220 | AcpiNsGetExternalPathname ( |
220 | AcpiNsGetExternalPathname ( |
221 | ACPI_NAMESPACE_NODE *Node) |
221 | ACPI_NAMESPACE_NODE *Node) |
222 | { |
222 | { |
223 | ACPI_STATUS Status; |
223 | ACPI_STATUS Status; |
224 | char *NameBuffer; |
224 | char *NameBuffer; |
225 | ACPI_SIZE Size; |
225 | ACPI_SIZE Size; |
226 | 226 | ||
227 | 227 | ||
228 | ACPI_FUNCTION_TRACE_PTR (NsGetExternalPathname, Node); |
228 | ACPI_FUNCTION_TRACE_PTR (NsGetExternalPathname, Node); |
229 | 229 | ||
230 | 230 | ||
231 | /* Calculate required buffer size based on depth below root */ |
231 | /* Calculate required buffer size based on depth below root */ |
232 | 232 | ||
233 | Size = AcpiNsGetPathnameLength (Node); |
233 | Size = AcpiNsGetPathnameLength (Node); |
234 | if (!Size) |
234 | if (!Size) |
235 | { |
235 | { |
236 | return_PTR (NULL); |
236 | return_PTR (NULL); |
237 | } |
237 | } |
238 | 238 | ||
239 | /* Allocate a buffer to be returned to caller */ |
239 | /* Allocate a buffer to be returned to caller */ |
240 | 240 | ||
241 | NameBuffer = ACPI_ALLOCATE_ZEROED (Size); |
241 | NameBuffer = ACPI_ALLOCATE_ZEROED (Size); |
242 | if (!NameBuffer) |
242 | if (!NameBuffer) |
243 | { |
243 | { |
244 | ACPI_ERROR ((AE_INFO, "Could not allocate %u bytes", (UINT32) Size)); |
244 | ACPI_ERROR ((AE_INFO, "Could not allocate %u bytes", (UINT32) Size)); |
245 | return_PTR (NULL); |
245 | return_PTR (NULL); |
246 | } |
246 | } |
247 | 247 | ||
248 | /* Build the path in the allocated buffer */ |
248 | /* Build the path in the allocated buffer */ |
249 | 249 | ||
250 | Status = AcpiNsBuildExternalPath (Node, Size, NameBuffer); |
250 | Status = AcpiNsBuildExternalPath (Node, Size, NameBuffer); |
251 | if (ACPI_FAILURE (Status)) |
251 | if (ACPI_FAILURE (Status)) |
252 | { |
252 | { |
253 | ACPI_FREE (NameBuffer); |
253 | ACPI_FREE (NameBuffer); |
254 | return_PTR (NULL); |
254 | return_PTR (NULL); |
255 | } |
255 | } |
256 | 256 | ||
257 | return_PTR (NameBuffer); |
257 | return_PTR (NameBuffer); |
258 | } |
258 | } |
259 | 259 | ||
260 | 260 | ||
261 | /******************************************************************************* |
261 | /******************************************************************************* |
262 | * |
262 | * |
263 | * FUNCTION: AcpiNsGetPathnameLength |
263 | * FUNCTION: AcpiNsGetPathnameLength |
264 | * |
264 | * |
265 | * PARAMETERS: Node - Namespace node |
265 | * PARAMETERS: Node - Namespace node |
266 | * |
266 | * |
267 | * RETURN: Length of path, including prefix |
267 | * RETURN: Length of path, including prefix |
268 | * |
268 | * |
269 | * DESCRIPTION: Get the length of the pathname string for this node |
269 | * DESCRIPTION: Get the length of the pathname string for this node |
270 | * |
270 | * |
271 | ******************************************************************************/ |
271 | ******************************************************************************/ |
272 | 272 | ||
273 | ACPI_SIZE |
273 | ACPI_SIZE |
274 | AcpiNsGetPathnameLength ( |
274 | AcpiNsGetPathnameLength ( |
275 | ACPI_NAMESPACE_NODE *Node) |
275 | ACPI_NAMESPACE_NODE *Node) |
276 | { |
276 | { |
277 | ACPI_SIZE Size; |
277 | ACPI_SIZE Size; |
278 | ACPI_NAMESPACE_NODE *NextNode; |
278 | ACPI_NAMESPACE_NODE *NextNode; |
279 | 279 | ||
280 | 280 | ||
281 | ACPI_FUNCTION_ENTRY (); |
281 | ACPI_FUNCTION_ENTRY (); |
282 | 282 | ||
283 | 283 | ||
284 | /* |
284 | /* |
285 | * Compute length of pathname as 5 * number of name segments. |
285 | * Compute length of pathname as 5 * number of name segments. |
286 | * Go back up the parent tree to the root |
286 | * Go back up the parent tree to the root |
287 | */ |
287 | */ |
288 | Size = 0; |
288 | Size = 0; |
289 | NextNode = Node; |
289 | NextNode = Node; |
290 | 290 | ||
291 | while (NextNode && (NextNode != AcpiGbl_RootNode)) |
291 | while (NextNode && (NextNode != AcpiGbl_RootNode)) |
292 | { |
292 | { |
293 | if (ACPI_GET_DESCRIPTOR_TYPE (NextNode) != ACPI_DESC_TYPE_NAMED) |
293 | if (ACPI_GET_DESCRIPTOR_TYPE (NextNode) != ACPI_DESC_TYPE_NAMED) |
294 | { |
294 | { |
295 | ACPI_ERROR ((AE_INFO, |
295 | ACPI_ERROR ((AE_INFO, |
296 | "Invalid Namespace Node (%p) while traversing namespace", |
296 | "Invalid Namespace Node (%p) while traversing namespace", |
297 | NextNode)); |
297 | NextNode)); |
298 | return 0; |
298 | return 0; |
299 | } |
299 | } |
300 | Size += ACPI_PATH_SEGMENT_LENGTH; |
300 | Size += ACPI_PATH_SEGMENT_LENGTH; |
301 | NextNode = NextNode->Parent; |
301 | NextNode = NextNode->Parent; |
302 | } |
302 | } |
303 | 303 | ||
304 | if (!Size) |
304 | if (!Size) |
305 | { |
305 | { |
306 | Size = 1; /* Root node case */ |
306 | Size = 1; /* Root node case */ |
307 | } |
307 | } |
308 | 308 | ||
309 | return (Size + 1); /* +1 for null string terminator */ |
309 | return (Size + 1); /* +1 for null string terminator */ |
310 | } |
310 | } |
311 | 311 | ||
312 | 312 | ||
313 | /******************************************************************************* |
313 | /******************************************************************************* |
314 | * |
314 | * |
315 | * FUNCTION: AcpiNsHandleToPathname |
315 | * FUNCTION: AcpiNsHandleToPathname |
316 | * |
316 | * |
317 | * PARAMETERS: TargetHandle - Handle of named object whose name is |
317 | * PARAMETERS: TargetHandle - Handle of named object whose name is |
318 | * to be found |
318 | * to be found |
319 | * Buffer - Where the pathname is returned |
319 | * Buffer - Where the pathname is returned |
320 | * |
320 | * |
321 | * RETURN: Status, Buffer is filled with pathname if status is AE_OK |
321 | * RETURN: Status, Buffer is filled with pathname if status is AE_OK |
322 | * |
322 | * |
323 | * DESCRIPTION: Build and return a full namespace pathname |
323 | * DESCRIPTION: Build and return a full namespace pathname |
324 | * |
324 | * |
325 | ******************************************************************************/ |
325 | ******************************************************************************/ |
326 | 326 | ||
327 | ACPI_STATUS |
327 | ACPI_STATUS |
328 | AcpiNsHandleToPathname ( |
328 | AcpiNsHandleToPathname ( |
329 | ACPI_HANDLE TargetHandle, |
329 | ACPI_HANDLE TargetHandle, |
330 | ACPI_BUFFER *Buffer) |
330 | ACPI_BUFFER *Buffer) |
331 | { |
331 | { |
332 | ACPI_STATUS Status; |
332 | ACPI_STATUS Status; |
333 | ACPI_NAMESPACE_NODE *Node; |
333 | ACPI_NAMESPACE_NODE *Node; |
334 | ACPI_SIZE RequiredSize; |
334 | ACPI_SIZE RequiredSize; |
335 | 335 | ||
336 | 336 | ||
337 | ACPI_FUNCTION_TRACE_PTR (NsHandleToPathname, TargetHandle); |
337 | ACPI_FUNCTION_TRACE_PTR (NsHandleToPathname, TargetHandle); |
338 | 338 | ||
339 | 339 | ||
340 | Node = AcpiNsValidateHandle (TargetHandle); |
340 | Node = AcpiNsValidateHandle (TargetHandle); |
341 | if (!Node) |
341 | if (!Node) |
342 | { |
342 | { |
343 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
343 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
344 | } |
344 | } |
345 | 345 | ||
346 | /* Determine size required for the caller buffer */ |
346 | /* Determine size required for the caller buffer */ |
347 | 347 | ||
348 | RequiredSize = AcpiNsGetPathnameLength (Node); |
348 | RequiredSize = AcpiNsGetPathnameLength (Node); |
349 | if (!RequiredSize) |
349 | if (!RequiredSize) |
350 | { |
350 | { |
351 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
351 | return_ACPI_STATUS (AE_BAD_PARAMETER); |
352 | } |
352 | } |
353 | 353 | ||
354 | /* Validate/Allocate/Clear caller buffer */ |
354 | /* Validate/Allocate/Clear caller buffer */ |
355 | 355 | ||
356 | Status = AcpiUtInitializeBuffer (Buffer, RequiredSize); |
356 | Status = AcpiUtInitializeBuffer (Buffer, RequiredSize); |
357 | if (ACPI_FAILURE (Status)) |
357 | if (ACPI_FAILURE (Status)) |
358 | { |
358 | { |
359 | return_ACPI_STATUS (Status); |
359 | return_ACPI_STATUS (Status); |
360 | } |
360 | } |
361 | 361 | ||
362 | /* Build the path in the caller buffer */ |
362 | /* Build the path in the caller buffer */ |
363 | 363 | ||
364 | Status = AcpiNsBuildExternalPath (Node, RequiredSize, Buffer->Pointer); |
364 | Status = AcpiNsBuildExternalPath (Node, RequiredSize, Buffer->Pointer); |
365 | if (ACPI_FAILURE (Status)) |
365 | if (ACPI_FAILURE (Status)) |
366 | { |
366 | { |
367 | return_ACPI_STATUS (Status); |
367 | return_ACPI_STATUS (Status); |
368 | } |
368 | } |
369 | 369 | ||
370 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s [%X]\n", |
370 | ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%s [%X]\n", |
371 | (char *) Buffer->Pointer, (UINT32) RequiredSize)); |
371 | (char *) Buffer->Pointer, (UINT32) RequiredSize)); |
372 | return_ACPI_STATUS (AE_OK); |
372 | return_ACPI_STATUS (AE_OK); |
373 | }> |
373 | }> |