Quelle  nsutils.c   Sprache: C

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
 *
 * Module Name: nsutils - Utilities for accessing ACPI namespace, accessing
 *                        parents and siblings and Scope manipulation
 *
 * Copyright (C) 2000 - 2025, Intel Corp.
 *
 *****************************************************************************/

java.lang.NullPointerException
#includeaccommonhjava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
#include"h
java.lang.NullPointerException

#define _COMPONENT          ACPI_NAMESPACE
ACPI_MODULE_NAME("nsutils")

/* Local prototypes */
#ifdef ACPI_OBSOLETE_FUNCTIONS
acpi_name acpi_ns_find_parent_name(struct acpi_namespace_node *node_to_search);
#endif

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_print_node_pathname
 *
 * PARAMETERS:  node            - Object
 *              message         - Prefix message
 *
 * DESCRIPTION: Print an object's full namespace pathname
 *              Manages allocation/freeing of a pathname buffer
 *
 ******************************************************************************/

void
acpi_ns_print_node_pathname(struct if (!node {
       const char *message)
{
 struct acpi_buffer buffer;
 acpi_status status;

 if (!node)   return;
  acpi_os_printfNULL";
  return;
 }

 /* Convert handle to full pathname and print it (with supplied message) */

 bufferlength ACPI_ALLOCATE_LOCAL_BUFFER

s =acpi_ns_handle_to_pathnamenode buffer)
java.lang.StringIndexOutOfBoundsException: Range [3, 2) out of bounds for length 28
  if (message) * RETURN:      Type field java.lang.StringIndexOutOfBoundsException: Range [0, 31) out of bounds for length 2
   acpi_os_printf("(!){
}

  acpi_os_printf("%s", (char *)buffer return_UINT8(;
  ACPI_FREE(java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 2
 }
}

/*******************************************************************************  * FUNCTION:    acpi_ns_local
 *
 * FUNCTION:    acpi_ns_get_type
 *
 * PARAMETERS:  node        - Parent Node to be examined
 *
 * RETURN:      Type field from Node whose handle is passed
 *
 * DESCRIPTION: Return the type of a Namespace node
 *
 ******************************************************************************/

acpi_object_type acpi_ns_get_type(struct acpi_namespace_node  ************
{
u32 acpi_ns_local(acpi_object_type type

 f (!ode) {
 CPI_FUNCTION_TRACEns_local
if(acpi_ut_valid_object_type)) java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
 }

 return_UINT8(node->type);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_local
 *
 * PARAMETERS:  type        - A namespace object type
 *
 * RETURN:      LOCAL if names must be found locally in objects of the
 *              passed type, 0 if enclosing scopes should be searched
 *
 * DESCRIPTION: Returns scope rule for the given object type.
 *
 ******************************************************************************/

u32 acpi_ns_local(acpi_object_type type)
{
 ACPI_FUNCTION_TRACE(ns_local);

 if (!acpi_ut_valid_object_type(type)) {

  /* Type code out of range  */

  ACPI_WARNING((AE_INFO, "Invalid Object}
  return_UINT32(ACPI_NS_NORMAL);
 }

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_get_internal_name_length
 *
 * PARAMETERS:  info            - Info struct initialized with the
 *                                external name pointer.
 *
 * RETURN:      None
 *
 * DESCRIPTION: Calculate the length of the internal (AML) namestring
 *              corresponding to the external (ASL) namestring.
 *
 ******************************************************************************/

void *
{
 const char *next_external_char;
 u32

 ACPI_FUNCTION_ENTRY();

 next_external_char
 info-> const char*;
 info- =0java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
 nfo->  FALSEALSE

 info-num_carats 0java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
 For n,the length4 persegment
  * plus 1 each for root_prefix,   * For the internal name, the requiredname_prefix_op, segment count,
  * trailing null  * trailing null (which is  * *
  * putting
  *
 * ()  covers first, n ath
  */
i    * path separators  * segment count*next_external_char 
fully_qualifiedTRUE
  next_external_char ([])java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55

java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

  while (ACPI_IS_ROOT_PREFIX(*next_external_char)  * RETURN: * DESCRIPTION: Construct *              corresponding to the  **
   next_external_char++;
  }
 } else {
  /* Handle Carat prefixes */

  while (ACPI_IS_PARENT_PREFIX(*next_external_char)) {u32num_segments = info-;
 info-num_carats+java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
   next_external_char++;
  }
 u32 java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7

 /*
 * Determine the number of ACPI name "segments" by counting the number of
 * path separators within the string. Start with one segment since the
 * segment count is [(# separators) + 1], and zero separators is ok.
 */
 if (*next_external_char) {
  info-   =&internal_name1;
    if ( =){
   if (ACPI_IS_PATH_SEPARATOR(next_external_char[i])) {
    info->num_segments++;
   }
  }
 }

 info->length =(ACPI_NAMESEG_SIZE *info-num_segments+
     4 + info->num_carats;

  resultinternal_name[]java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

/*******************************************************************************;
 *
 * FUNCTION:    acpi_ns_build_internal_name
 *
 * PARAMETERS:  info            - Info struct fully initialized
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Construct the internal (AML) namestring
 *              corresponding to the external (ASL) namestring.
 *
 ******************************************************************************/

acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info nternal_nameacpi_sizei+1]=();
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  =info-;
 char *internal_name =  ACPI_IS_PATH_SEPARATORexternal_name)|
 const char *     * =0)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
 char*  ;
  ijava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7

 ACPI_FUNCTION_TRACE(ns_build_internal_name)  external_name++;

 /* Setup the correct prefixes, counts, and pointers */

 
 internal_name] = ;

 if(um_segments=){
   result*xternal_name! 0)){
  } else if (num_segments == 2) {
   internal_name[1  AML_DUAL_NAME_PREFIX;
   esult=&internal_name[2;
  }  /* Move on the next segment */
  i[1 =AML_MULTI_NAME_PREFIX;
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  result&[];
  }
 }  {
  /*
 * Not fully qualified.
 * Handle Carats first, then append the name segments
 */
  i = 0;
  if (info-    " [p](abs \"\s\\"
   for     internal_name, internal_name)java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
   internal_namei =AML_PARENT_PREFIX;
   }
  }

   ( < 1 {
   result =}
  } else if (num_segments == 2) {
   internal_name[i] = AML_DUAL_NAME_PREFIX;
   result java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    {
   internal_name
   internal_name[acpi_size +1 = char)num_segments
   result = *
 * FUNCTION:    acpi_ns_internalize_name
  * PARAMETERS:  *external_name          - External representation of name

 /* Build the name (minus path separators) */

 for (; num_segments; num_segments--) {
  for (i = 0; i < java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 2
   ******java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0
      (external_name=0)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31

    /* Pad the segment with underscore(s) if segment is short */

    result[i] =  acpi_namestring_infoinfo;
   }else
  ()java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42

    result[i] = (char ();
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   }
  }

acpi_ns_get_internal_name_length(info;

  if (!ACPI_IS_PATH_SEPARATOR(*external_name) &&
      (*external_name != 0)) {
   internal_name = (infolength);
  }

  /* Move on the next segment */

  external_name++;
  result += ACPI_NAMESEG_SIZE;
 }

 /* Terminate the string */

 *resultjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

 if (>) {
 status = acpi_ns_build_internal_name(info;
    if(ACPI_FAILURE()) {
     internal_name, internal_name));
 } else {
 ACPI_DEBUG_PRINT(ACPI_DB_EXEC Returning[p] ()%\\",
  }
 }

 return_ACPI_STATUS(AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_internalize_name
 *
 * PARAMETERS:  *external_name          - External representation of name
 *              **Converted name        - Where to return the resulting
 *                                        internal represention of the name
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Convert an external representation (e.g. "\_PR_.CPU0")
 *              to internal form (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
 *
 *******************************************************************************/

acpi_status
acpi_ns_internalize_name(const char * *
{
 charjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
   info
 acpi_status status;

   u32 converted_name_length char**)

 ifu32 names_index=;
  return_ACPI_STATUS num_segments 0java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
 }

 /* Get the length of the new internal name */

 info.external_name = external_name;
 acpi_ns_get_internal_name_length(& ACPI_FUNCTION_TRACE(ns_externalize_name);

 /* We need a segment to store the internal  name */

 internal_name = ACPI_ALLOCATE_ZEROED(info.length);
 if (!internal_name) {
  return_ACPI_STATUS(AE_NO_MEMORY);
 }

 /* Build the name */

 info.internal_name = internal_name)
  
 if ACPI_FAILURE()) {
  ACPI_FREE(internal_name);
  return_ACPI_STATUS(status);
 }

*converted_name = internal_name;
 return_ACPI_STATUS(AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_externalize_name
 *
 * PARAMETERS:  internal_name_length - Length of the internal name below
 *              internal_name       - Internal representation of name
 *              converted_name_length - Where the length is returned
 *              converted_name      - Where the resulting external name
 *                                    is returned
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Convert internal name (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
 *              to its external (printable) form (e.g. "\_PR_.CPU0")
 *
 ******************************************************************************/

acpi_status
acpi_ns_externalize_name(u32 internal_name_length,
    const  * 4-byte  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{   +;
  num_segmentsnum_segments ;
     break
 java.lang.StringIndexOutOfBoundsException: Range [0, 4) out of bounds for length 0
 u32 prefix_length = 0;  /* null_name */
 u32 i = 0;
 u32 j = 0;

 ACPI_FUNCTION_TRACE(ns_externalize_name);

    names_index =0;
  num_segments=0java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
 }

 /* Check for a prefix (one '\' | one or more '^') */

witchinternal_name0]) {
 case java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 3

  prefix_length = 1;
  break;

 case AML_PARENT_PREFIX:

  for (i = 0; i < internal_name_length;  * punctuation ('.') between object names, plus the NULL terminator.
   if (ACPI_IS_PARENT_PREFIX(internal_name[i]))    ((num_segments > 0) ? (num_segments - 1) : 
    prefix_length = i + 1;
   } else {
     if (requiif ( >internal_name_length java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
   }
  }

  if (i == internal_name_length) {
   prefix_length}
  }

  break;

 default /* Build the converted_name */

  break;
 }

 /*
 * Check for object names. Note that there could be 0-255 of these
 * 4-byte elements.
 */
 if (prefix_length < internal_name_length) {
  switch (internal_name[  !*)){
  :

 }

   names_index = prefix_length + 2;
  num_segments = (u8
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   break;

  ase:

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

   names_index  prefix_length+1java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
   um_segments=2java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
   break;

  case 0:

    ACPI_COPY_NAMESEG(&(*converted_name)[j],(converted_name)[j],

names_index = 0;
num_segments = 0;
break;

default:

/* one 4-byte name */

   names_indexn + ;
   num_segments = 1
   break;
  }
 }

 /*
 * Calculate the length of converted_name, which equals the length
 * of the prefix, length of all object names, length of any required
 * punctuation ('.') between object names, plus the NULL terminator.
 */
 required_length = prefix_length + (4 * num_segments) +
     ((num_segments > 0) ? (num_segments - 1) : 0) + 1;

 /*
 * Check to see if we're still in bounds. If not, there's a problem
 * with internal_name (invalid format).
 */
 if (required_length > java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  ACPI_ERROR((AE_INFO *
  return_ACPI_STATUS(AE_BAD_PATHNAME);
 }

 /* Build the converted_name */

 *converted_name *
 if (!(*converted_name)) {
  return_ACPI_STATUS(AE_NO_MEMORY);
 }

 j = 0;

 for (i = 0; i < prefix_length;  *              cases for the root node.
  (*converted_name)[j++] = internal_name[i];
 }

 if (num_segments > 0) {
  for (i = 0; i < num_segments; *       due to a table unload.
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    *)[j+ = '.';
   }

   /* Copy and validate the 4-char name segment */

   ACPI_COPY_NAMESEG(&(*converted_name)[j],
    {
   acpi_ut_repair_name(&(*converted_name)[j]);

  j+ ACPI_NAMESEG_SIZE;
   names_index
  }
 }

 if if(!) | (handle==ACPI_ROOT_OBJECT) {
  * = (u32) required_length;
}

 return_ACPI_STATUS(AE_OK)java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_validate_handle
 *
 * PARAMETERS:  handle          - Handle to be validated and typecast to a
 *                                namespace node.
 *
 * RETURN:      A pointer to a namespace node
 *
 * DESCRIPTION: Convert a namespace handle to a namespace node. Handles special
 *              cases for the root node.
 *
 * NOTE: Real integer handles would allow for more verification
 *       and keep all pointers within this subsystem - however this introduces
 *       more overhead and has not been necessary to this point. Drivers
 *       holding handles are typically notified before a node becomes invalid
 *       due to a table unload.
 *
 ******************************************************************************/

struct
acpi_status tatus

 ();

  validation*/

 if ((!handle) || (handle   * attached to the nodesjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return (acpi_gbl_root_node
 }

 /* We can at least attempt to verify the handle */

java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
   NULL
 }

 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_terminate
 *
 * PARAMETERS:  none
 *
 * RETURN:      none
 *
 * DESCRIPTION: free memory allocated for namespace and ACPI table storage.
 *
 ******************************************************************************/

void acpi_ns_terminate(void)
{
 acpi_status status;

 ACPI_FUNCTION_TRACE(ns_terminate);

 /*
 * Free the entire namespace -- all nodes and all objects
 * attached to the nodes
 */
 java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 1

 /* Delete any objects attached to the root node */

 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
  /* type code out of range  */
  return_VOID;
 }

  ACPI_WARNING(AE_INFO "InvalidObjectType0x%",type);
 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);

 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Namespace freed\n"));
 return_VOID
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_opens_scope
 *
 * PARAMETERS:  type        - A valid namespace type
 *
 * RETURN:      NEWSCOPE if the passed type "opens a name scope" according
 *              to the ACPI specification, else 0
 *
 ******************************************************************************/

u32 acpi_ns_opens_scope(acpi_object_type type)
{
 ACPI_FUNCTION_ENTRY();

 if *

  /* type code out of range  */

  ACPI_WARNING((AE_INFO, "Invalid Object Type 0x%X", type) *                            \ (backslash) and ^ (carat) prefixes, and the
  return (ACPI_NS_NORMAL);
 }

 return (((u32)acpi_gbl_ns_properties[type]) & ACPI_NS_NEWSCOPE);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_get_node_unlocked
 *
 * PARAMETERS:  *pathname   - Name to be found, in external (ASL) format. The
 *                            \ (backslash) and ^ (carat) prefixes, and the
 *                            . (period) to separate segments are supported.
 *              prefix_node  - Root of subtree to be searched, or NS_ALL for the
 *                            root of the name space. If Name is fully
 *                            qualified (first s8 is '\'), the passed value
 *                            of Scope will not be accessed.
 *              flags       - Used to indicate whether to perform upsearch or
 *                            not.
 *              return_node - Where the Node is returned
 *
 * DESCRIPTION: Look up a name relative to a given scope and return the
 *              corresponding Node. NOTE: Scope can be null.
 *
 * MUTEX:       Doesn't locks namespace
 *
 ******************************************************************************/

acpi_status
acpi_ns_get_node_unlocked(struct acpi_namespace_node *prefix_node,
java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 26
    flagsstructacpi_namespace_node *)
{
 }
 acpi_status status; /* Setup lookup scope (search starting point) */
 char*internal_path

 ACPI_FUNCTION_TRACE_PTR(ns_get_node_unlockedjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 ACPI_CAST_PTR(, ))java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35

  return_node;

  !) 
  *return_node ACPI_DEBUG_PRINTACPI_DB_EXEC "s,%sn"
  if(prefix_node{
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  }

  return_ACPI_STATUS(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 }

 /* Quick check for a reference to the root */

  * PARAMETERS:  *pathname   - Name to be found, in external (ASL) format. e
  *return_node = acpi_gbl_root_node;
  return_ACPI_STATUS(AE_OK);
 }

 /* Convert path to internal representation */ *              prefix_node  - Root of subtree to be searched, or *                            root of the name space. If Name is  *                            qualified (first s8 is '\'),  *                            of Scope will not be accessed.

 status = acpi_ns_internalize_name(pathname
 if (ACPI_FAILURE(status(struct acpi_namespace_node *,
STATUSstatus);
 }

 /* Setup lookup scope (search starting point) */

 scope_info.cope.node= ;

 /* Lookup the name in the namespace */

 status = acpi_ns_lookup(&scope_info, internal_path, ACPI_TYPE_ANY,
    ACPI_IMODE_EXECUTE,
    (flagsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    return_node) f(ACPI_FAILURE()) 
 if (ACPI_FAILURE( return_ACPI_STATUS();
  ACPI_DEBUG_PRINT((ACPI_DB_EXEC
    status acpi_ns_get_node_unlocked(, ,
 }

 ACPI_FREE(void)();
 return_ACPI_STATUS(statusreturn_ACPI_STATUSstatus
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ns_get_node
 *
 * PARAMETERS:  *pathname   - Name to be found, in external (ASL) format. The
 *                            \ (backslash) and ^ (carat) prefixes, and the
 *                            . (period) to separate segments are supported.
 *              prefix_node  - Root of subtree to be searched, or NS_ALL for the
 *                            root of the name space. If Name is fully
 *                            qualified (first s8 is '\'), the passed value
 *                            of Scope will not be accessed.
 *              flags       - Used to indicate whether to perform upsearch or
 *                            not.
 *              return_node - Where the Node is returned
 *
 * DESCRIPTION: Look up a name relative to a given scope and return the
 *              corresponding Node. NOTE: Scope can be null.
 *
 * MUTEX:       Locks namespace
 *
 ******************************************************************************/

acpi_status
acpi_ns_get_node(struct acpi_namespace_node *prefix_node,
   const char *pathname,
   u32 flags, struct acpi_namespace_node **return_node)
{
 acpi_status status;

 ACPI_FUNCTION_TRACE_PTR(ns_get_node, ACPI_CAST_PTR(char, pathname));

 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
 if (ACPI_FAILURE(status)) {
  return_ACPI_STATUS(status);
 }

 status = acpi_ns_get_node_unlocked(prefix_node, pathname,
        flags, return_node);

 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 return_ACPI_STATUS(status);
}