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f5c1e1c5a6
ACPICA commit b2294cae776f5a66a7697414b21949d307e6856f This patch removes unwanted spaces for typedef. This solution doesn't cover function types. Note that the linuxize result of this commit is very giant and should have many conflicts against the current Linux upstream. Thus it is required to modify the linuxize result of this commit and the commits around it manually in order to have them merged to the Linux upstream. Since this is very costy, we should do this only once, and if we can't ensure to do this only once, we need to revert the Linux code to the wrong indentation result before merging the linuxize result of this commit. Lv Zheng. Link: https://github.com/acpica/acpica/commit/b2294cae Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
306 lines
9.6 KiB
C
306 lines
9.6 KiB
C
/*******************************************************************************
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*
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* Module Name: nsnames - Name manipulation and search
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2016, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_NAMESPACE
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ACPI_MODULE_NAME("nsnames")
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_get_external_pathname
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*
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* PARAMETERS: node - Namespace node whose pathname is needed
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*
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* RETURN: Pointer to storage containing the fully qualified name of
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* the node, In external format (name segments separated by path
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* separators.)
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*
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* DESCRIPTION: Used to obtain the full pathname to a namespace node, usually
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* for error and debug statements.
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*
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******************************************************************************/
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char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
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{
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char *name_buffer;
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ACPI_FUNCTION_TRACE_PTR(ns_get_external_pathname, node);
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name_buffer = acpi_ns_get_normalized_pathname(node, FALSE);
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return_PTR(name_buffer);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_get_pathname_length
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*
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* PARAMETERS: node - Namespace node
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*
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* RETURN: Length of path, including prefix
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*
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* DESCRIPTION: Get the length of the pathname string for this node
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*
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******************************************************************************/
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acpi_size acpi_ns_get_pathname_length(struct acpi_namespace_node *node)
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{
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acpi_size size;
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ACPI_FUNCTION_ENTRY();
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size = acpi_ns_build_normalized_path(node, NULL, 0, FALSE);
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return (size);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_handle_to_pathname
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*
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* PARAMETERS: target_handle - Handle of named object whose name is
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* to be found
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* buffer - Where the pathname is returned
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* no_trailing - Remove trailing '_' for each name
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* segment
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*
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* RETURN: Status, Buffer is filled with pathname if status is AE_OK
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*
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* DESCRIPTION: Build and return a full namespace pathname
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*
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******************************************************************************/
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acpi_status
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acpi_ns_handle_to_pathname(acpi_handle target_handle,
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struct acpi_buffer *buffer, u8 no_trailing)
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{
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acpi_status status;
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struct acpi_namespace_node *node;
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acpi_size required_size;
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ACPI_FUNCTION_TRACE_PTR(ns_handle_to_pathname, target_handle);
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node = acpi_ns_validate_handle(target_handle);
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if (!node) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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/* Determine size required for the caller buffer */
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required_size =
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acpi_ns_build_normalized_path(node, NULL, 0, no_trailing);
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if (!required_size) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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/* Validate/Allocate/Clear caller buffer */
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status = acpi_ut_initialize_buffer(buffer, required_size);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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/* Build the path in the caller buffer */
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(void)acpi_ns_build_normalized_path(node, buffer->pointer,
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required_size, no_trailing);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s [%X]\n",
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(char *)buffer->pointer, (u32) required_size));
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return_ACPI_STATUS(AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_build_normalized_path
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*
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* PARAMETERS: node - Namespace node
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* full_path - Where the path name is returned
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* path_size - Size of returned path name buffer
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* no_trailing - Remove trailing '_' from each name segment
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*
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* RETURN: Return 1 if the AML path is empty, otherwise returning (length
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* of pathname + 1) which means the 'FullPath' contains a trailing
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* null.
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*
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* DESCRIPTION: Build and return a full namespace pathname.
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* Note that if the size of 'FullPath' isn't large enough to
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* contain the namespace node's path name, the actual required
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* buffer length is returned, and it should be greater than
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* 'PathSize'. So callers are able to check the returning value
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* to determine the buffer size of 'FullPath'.
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*
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******************************************************************************/
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u32
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acpi_ns_build_normalized_path(struct acpi_namespace_node *node,
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char *full_path, u32 path_size, u8 no_trailing)
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{
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u32 length = 0, i;
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char name[ACPI_NAME_SIZE];
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u8 do_no_trailing;
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char c, *left, *right;
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struct acpi_namespace_node *next_node;
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ACPI_FUNCTION_TRACE_PTR(ns_build_normalized_path, node);
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#define ACPI_PATH_PUT8(path, size, byte, length) \
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do { \
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if ((length) < (size)) \
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{ \
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(path)[(length)] = (byte); \
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} \
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(length)++; \
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} while (0)
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/*
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* Make sure the path_size is correct, so that we don't need to
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* validate both full_path and path_size.
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*/
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if (!full_path) {
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path_size = 0;
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}
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if (!node) {
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goto build_trailing_null;
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}
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next_node = node;
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while (next_node && next_node != acpi_gbl_root_node) {
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if (next_node != node) {
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ACPI_PATH_PUT8(full_path, path_size,
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AML_DUAL_NAME_PREFIX, length);
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}
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ACPI_MOVE_32_TO_32(name, &next_node->name);
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do_no_trailing = no_trailing;
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for (i = 0; i < 4; i++) {
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c = name[4 - i - 1];
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if (do_no_trailing && c != '_') {
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do_no_trailing = FALSE;
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}
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if (!do_no_trailing) {
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ACPI_PATH_PUT8(full_path, path_size, c, length);
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}
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}
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next_node = next_node->parent;
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}
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ACPI_PATH_PUT8(full_path, path_size, AML_ROOT_PREFIX, length);
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/* Reverse the path string */
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if (length <= path_size) {
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left = full_path;
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right = full_path + length - 1;
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while (left < right) {
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c = *left;
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*left++ = *right;
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*right-- = c;
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}
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}
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/* Append the trailing null */
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build_trailing_null:
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ACPI_PATH_PUT8(full_path, path_size, '\0', length);
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#undef ACPI_PATH_PUT8
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return_UINT32(length);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ns_get_normalized_pathname
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*
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* PARAMETERS: node - Namespace node whose pathname is needed
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* no_trailing - Remove trailing '_' from each name segment
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*
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* RETURN: Pointer to storage containing the fully qualified name of
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* the node, In external format (name segments separated by path
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* separators.)
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*
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* DESCRIPTION: Used to obtain the full pathname to a namespace node, usually
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* for error and debug statements. All trailing '_' will be
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* removed from the full pathname if 'NoTrailing' is specified..
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*
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******************************************************************************/
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char *acpi_ns_get_normalized_pathname(struct acpi_namespace_node *node,
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u8 no_trailing)
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{
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char *name_buffer;
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acpi_size size;
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ACPI_FUNCTION_TRACE_PTR(ns_get_normalized_pathname, node);
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/* Calculate required buffer size based on depth below root */
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size = acpi_ns_build_normalized_path(node, NULL, 0, no_trailing);
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if (!size) {
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return_PTR(NULL);
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}
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/* Allocate a buffer to be returned to caller */
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name_buffer = ACPI_ALLOCATE_ZEROED(size);
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if (!name_buffer) {
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ACPI_ERROR((AE_INFO, "Could not allocate %u bytes", (u32)size));
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return_PTR(NULL);
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}
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/* Build the path in the allocated buffer */
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(void)acpi_ns_build_normalized_path(node, name_buffer, size,
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no_trailing);
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return_PTR(name_buffer);
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}
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