void
AcpiDmNamestring (
char *Name)
{
UINT32 SegCount;
if (!Name)
{
return;
}
/* Handle all Scope Prefix operators */
while (ACPI_IS_ROOT_PREFIX (ACPI_GET8 (Name)) ||
ACPI_IS_PARENT_PREFIX (ACPI_GET8 (Name)))
{
/* Append prefix character */
AcpiOsPrintf ("%1c", ACPI_GET8 (Name));
Name++;
}
switch (ACPI_GET8 (Name))
{
case 0:
SegCount = 0;
break;
case AML_DUAL_NAME_PREFIX:
SegCount = 2;
Name++;
break;
case AML_MULTI_NAME_PREFIX_OP:
SegCount = (UINT32) ACPI_GET8 (Name + 1);
Name += 2;
break;
default:
SegCount = 1;
break;
}
while (SegCount)
{
/* Append Name segment */
AcpiDmDumpName (*ACPI_CAST_PTR (UINT32, Name));
SegCount--;
if (SegCount)
{
/* Not last name, append dot separator */
AcpiOsPrintf (".");
}
Name += ACPI_NAME_SIZE;
}
}
void acpi_ns_get_internal_name_length(struct acpi_namestring_info *info)
{
const char *next_external_char;
u32 i;
ACPI_FUNCTION_ENTRY();
next_external_char = info->external_name;
info->num_carats = 0;
info->num_segments = 0;
info->fully_qualified = FALSE;
/*
* For the internal name, the required length is 4 bytes per segment,
* plus 1 each for root_prefix, multi_name_prefix_op, segment count,
* trailing null (which is not really needed, but no there's harm in
* putting it there)
*
* strlen() + 1 covers the first name_seg, which has no path separator
*/
if (ACPI_IS_ROOT_PREFIX(*next_external_char)) {
info->fully_qualified = TRUE;
next_external_char++;
/* Skip redundant root_prefix, like \\_SB.PCI0.SBRG.EC0 */
while (ACPI_IS_ROOT_PREFIX(*next_external_char)) {
next_external_char++;
}
} else {
/* Handle Carat prefixes */
while (ACPI_IS_PARENT_PREFIX(*next_external_char)) {
info->num_carats++;
next_external_char++;
}
}
/*
* 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->num_segments = 1;
for (i = 0; next_external_char[i]; i++) {
if (ACPI_IS_PATH_SEPARATOR(next_external_char[i])) {
info->num_segments++;
}
}
}
info->length = (ACPI_NAME_SIZE * info->num_segments) +
4 + info->num_carats;
info->next_external_char = next_external_char;
}
static void
UtAttachNameseg (
ACPI_PARSE_OBJECT *Op,
char *Name)
{
char *NameSeg;
char PaddedNameSeg[4];
if (!Name)
{
return;
}
/* Look for the last dot in the namepath */
NameSeg = strrchr (Name, '.');
if (NameSeg)
{
/* Found last dot, we have also found the final nameseg */
NameSeg++;
UtPadNameWithUnderscores (NameSeg, PaddedNameSeg);
}
else
{
/* No dots in the namepath, there is only a single nameseg. */
/* Handle prefixes */
while (ACPI_IS_ROOT_PREFIX (*Name) ||
ACPI_IS_PARENT_PREFIX (*Name))
{
Name++;
}
/* Remaining string should be one single nameseg */
UtPadNameWithUnderscores (Name, PaddedNameSeg);
}
ACPI_MOVE_NAME (Op->Asl.NameSeg, PaddedNameSeg);
}
ACPI_STATUS
AcpiNsExternalizeName (
UINT32 InternalNameLength,
const char *InternalName,
UINT32 *ConvertedNameLength,
char **ConvertedName)
{
UINT32 NamesIndex = 0;
UINT32 NumSegments = 0;
UINT32 RequiredLength;
UINT32 PrefixLength = 0;
UINT32 i = 0;
UINT32 j = 0;
ACPI_FUNCTION_TRACE (NsExternalizeName);
if (!InternalNameLength ||
!InternalName ||
!ConvertedName)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Check for a prefix (one '\' | one or more '^') */
switch (InternalName[0])
{
case AML_ROOT_PREFIX:
PrefixLength = 1;
break;
case AML_PARENT_PREFIX:
for (i = 0; i < InternalNameLength; i++)
{
if (ACPI_IS_PARENT_PREFIX (InternalName[i]))
{
PrefixLength = i + 1;
}
else
{
break;
}
}
if (i == InternalNameLength)
{
PrefixLength = i;
}
break;
default:
break;
}
/*
* Check for object names. Note that there could be 0-255 of these
* 4-byte elements.
*/
if (PrefixLength < InternalNameLength)
{
switch (InternalName[PrefixLength])
{
case AML_MULTI_NAME_PREFIX:
/* <count> 4-byte names */
NamesIndex = PrefixLength + 2;
NumSegments = (UINT8)
InternalName[(ACPI_SIZE) PrefixLength + 1];
break;
case AML_DUAL_NAME_PREFIX:
/* Two 4-byte names */
NamesIndex = PrefixLength + 1;
NumSegments = 2;
break;
case 0:
/* NullName */
NamesIndex = 0;
NumSegments = 0;
break;
default:
/* one 4-byte name */
NamesIndex = PrefixLength;
NumSegments = 1;
break;
}
}
/*
* Calculate the length of ConvertedName, which equals the length
* of the prefix, length of all object names, length of any required
* punctuation ('.') between object names, plus the NULL terminator.
*/
RequiredLength = PrefixLength + (4 * NumSegments) +
((NumSegments > 0) ? (NumSegments - 1) : 0) + 1;
/*
* Check to see if we're still in bounds. If not, there's a problem
* with InternalName (invalid format).
*/
if (RequiredLength > InternalNameLength)
{
ACPI_ERROR ((AE_INFO, "Invalid internal name"));
return_ACPI_STATUS (AE_BAD_PATHNAME);
}
/* Build the ConvertedName */
*ConvertedName = ACPI_ALLOCATE_ZEROED (RequiredLength);
if (!(*ConvertedName))
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
j = 0;
for (i = 0; i < PrefixLength; i++)
{
(*ConvertedName)[j++] = InternalName[i];
}
if (NumSegments > 0)
{
for (i = 0; i < NumSegments; i++)
{
if (i > 0)
{
(*ConvertedName)[j++] = '.';
}
/* Copy and validate the 4-char name segment */
ACPI_MOVE_NAME (&(*ConvertedName)[j],
&InternalName[NamesIndex]);
AcpiUtRepairName (&(*ConvertedName)[j]);
j += ACPI_NAME_SIZE;
NamesIndex += ACPI_NAME_SIZE;
}
}
if (ConvertedNameLength)
{
*ConvertedNameLength = (UINT32) RequiredLength;
}
return_ACPI_STATUS (AE_OK);
}
void
AcpiNsGetInternalNameLength (
ACPI_NAMESTRING_INFO *Info)
{
const char *NextExternalChar;
UINT32 i;
ACPI_FUNCTION_ENTRY ();
NextExternalChar = Info->ExternalName;
Info->NumCarats = 0;
Info->NumSegments = 0;
Info->FullyQualified = FALSE;
/*
* For the internal name, the required length is 4 bytes per segment,
* plus 1 each for RootPrefix, MultiNamePrefixOp, segment count,
* trailing null (which is not really needed, but no there's harm in
* putting it there)
*
* strlen() + 1 covers the first NameSeg, which has no path separator
*/
if (ACPI_IS_ROOT_PREFIX (*NextExternalChar))
{
Info->FullyQualified = TRUE;
NextExternalChar++;
/* Skip redundant RootPrefix, like \\_SB.PCI0.SBRG.EC0 */
while (ACPI_IS_ROOT_PREFIX (*NextExternalChar))
{
NextExternalChar++;
}
}
else
{
/* Handle Carat prefixes */
while (ACPI_IS_PARENT_PREFIX (*NextExternalChar))
{
Info->NumCarats++;
NextExternalChar++;
}
}
/*
* 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 (*NextExternalChar)
{
Info->NumSegments = 1;
for (i = 0; NextExternalChar[i]; i++)
{
if (ACPI_IS_PATH_SEPARATOR (NextExternalChar[i]))
{
Info->NumSegments++;
}
}
}
Info->Length = (ACPI_NAME_SIZE * Info->NumSegments) +
4 + Info->NumCarats;
Info->NextExternalChar = NextExternalChar;
}
acpi_status
acpi_ns_externalize_name(u32 internal_name_length,
const char *internal_name,
u32 * converted_name_length, char **converted_name)
{
u32 names_index = 0;
u32 num_segments = 0;
u32 required_length;
u32 prefix_length = 0;
u32 i = 0;
u32 j = 0;
ACPI_FUNCTION_TRACE(ns_externalize_name);
if (!internal_name_length || !internal_name || !converted_name) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/* Check for a prefix (one '\' | one or more '^') */
switch (internal_name[0]) {
case AML_ROOT_PREFIX:
prefix_length = 1;
break;
case AML_PARENT_PREFIX:
for (i = 0; i < internal_name_length; i++) {
if (ACPI_IS_PARENT_PREFIX(internal_name[i])) {
prefix_length = i + 1;
} else {
break;
}
}
if (i == internal_name_length) {
prefix_length = i;
}
break;
default:
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[prefix_length]) {
case AML_MULTI_NAME_PREFIX:
/* <count> 4-byte names */
names_index = prefix_length + 2;
num_segments = (u8)
internal_name[(acpi_size)prefix_length + 1];
break;
case AML_DUAL_NAME_PREFIX:
/* Two 4-byte names */
names_index = prefix_length + 1;
num_segments = 2;
break;
case 0:
/* null_name */
names_index = 0;
num_segments = 0;
break;
default:
/* one 4-byte name */
names_index = prefix_length;
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 > internal_name_length) {
ACPI_ERROR((AE_INFO, "Invalid internal name"));
return_ACPI_STATUS(AE_BAD_PATHNAME);
}
/* Build the converted_name */
*converted_name = ACPI_ALLOCATE_ZEROED(required_length);
if (!(*converted_name)) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
j = 0;
for (i = 0; i < prefix_length; i++) {
(*converted_name)[j++] = internal_name[i];
}
if (num_segments > 0) {
for (i = 0; i < num_segments; i++) {
if (i > 0) {
(*converted_name)[j++] = '.';
}
/* Copy and validate the 4-char name segment */
ACPI_MOVE_NAME(&(*converted_name)[j],
&internal_name[names_index]);
acpi_ut_repair_name(&(*converted_name)[j]);
j += ACPI_NAME_SIZE;
names_index += ACPI_NAME_SIZE;
}
}
if (converted_name_length) {
*converted_name_length = (u32) required_length;
}
return_ACPI_STATUS(AE_OK);
}
