C++ ACPI_STRCPY函数代码示例

acpi_status acpi_ut_install_interface(acpi_string interface_name)
{
	struct acpi_interface_info *interface_info;

	/* Allocate info block and space for the name string */

	interface_info =
	    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_interface_info));
	if (!interface_info) {
		return (AE_NO_MEMORY);
	}

	interface_info->name =
	    ACPI_ALLOCATE_ZEROED(ACPI_STRLEN(interface_name) + 1);
	if (!interface_info->name) {
		ACPI_FREE(interface_info);
		return (AE_NO_MEMORY);
	}

	/* Initialize new info and insert at the head of the global list */

	ACPI_STRCPY(interface_info->name, interface_name);
	interface_info->flags = ACPI_OSI_DYNAMIC;
	interface_info->next = acpi_gbl_supported_interfaces;

	acpi_gbl_supported_interfaces = interface_info;
	return (AE_OK);
}

acpi_status acpi_ut_install_interface(acpi_string interface_name)
{
	struct acpi_interface_info *interface_info;

	

	interface_info =
	    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_interface_info));
	if (!interface_info) {
		return (AE_NO_MEMORY);
	}

	interface_info->name =
	    ACPI_ALLOCATE_ZEROED(ACPI_STRLEN(interface_name) + 1);
	if (!interface_info->name) {
		ACPI_FREE(interface_info);
		return (AE_NO_MEMORY);
	}

	

	ACPI_STRCPY(interface_info->name, interface_name);
	interface_info->flags = ACPI_OSI_DYNAMIC;
	interface_info->next = acpi_gbl_supported_interfaces;

	acpi_gbl_supported_interfaces = interface_info;
	return (AE_OK);
}

void acpi_ut_get_expected_return_types(char *buffer, u32 expected_btypes)
{
	u32 this_rtype;
	u32 i;
	u32 j;

	if (!expected_btypes) {
		ACPI_STRCPY(buffer, "NONE");
		return;
	}

	j = 1;
	buffer[0] = 0;
	this_rtype = ACPI_RTYPE_INTEGER;

	for (i = 0; i < ACPI_NUM_RTYPES; i++) {

		/* If one of the expected types, concatenate the name of this type */

		if (expected_btypes & this_rtype) {
			ACPI_STRCAT(buffer, &ut_rtype_names[i][j]);
			j = 0;	/* Use name separator from now on */
		}

		this_rtype <<= 1;	/* Next Rtype */
	}
}

ACPI_STATUS
AcpiUtInstallInterface (
    ACPI_STRING             InterfaceName)
{
    ACPI_INTERFACE_INFO     *InterfaceInfo;


    /* Allocate info block and space for the name string */

    InterfaceInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_INTERFACE_INFO));
    if (!InterfaceInfo)
    {
        return (AE_NO_MEMORY);
    }

    InterfaceInfo->Name = ACPI_ALLOCATE_ZEROED (ACPI_STRLEN (InterfaceName) + 1);
    if (!InterfaceInfo->Name)
    {
        ACPI_FREE (InterfaceInfo);
        return (AE_NO_MEMORY);
    }

    /* Initialize new info and insert at the head of the global list */

    ACPI_STRCPY (InterfaceInfo->Name, InterfaceName);
    InterfaceInfo->Flags = ACPI_OSI_DYNAMIC;
    InterfaceInfo->Next = AcpiGbl_SupportedInterfaces;

    AcpiGbl_SupportedInterfaces = InterfaceInfo;
    return (AE_OK);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_execute_HID
 *
 * PARAMETERS:  device_node         - Node for the device
 *              return_id           - Where the string HID is returned
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Executes the _HID control method that returns the hardware
 *              ID of the device. The HID is either an 32-bit encoded EISAID
 *              Integer or a String. A string is always returned. An EISAID
 *              is converted to a string.
 *
 *              NOTE: Internal function, no parameter validation
 *
 ******************************************************************************/
acpi_status
acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
		    struct acpi_pnp_device_id **return_id)
{
	union acpi_operand_object *obj_desc;
	struct acpi_pnp_device_id *hid;
	u32 length;
	acpi_status status;

	ACPI_FUNCTION_TRACE(ut_execute_HID);

	status = acpi_ut_evaluate_object(device_node, METHOD_NAME__HID,
					 ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
					 &obj_desc);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Get the size of the String to be returned, includes null terminator */

	if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
		length = ACPI_EISAID_STRING_SIZE;
	} else {
		length = obj_desc->string.length + 1;
	}

	/* Allocate a buffer for the HID */

	hid =
	    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pnp_device_id) +
				 (acpi_size) length);
	if (!hid) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/* Area for the string starts after PNP_DEVICE_ID struct */

	hid->string =
	    ACPI_ADD_PTR(char, hid, sizeof(struct acpi_pnp_device_id));

	/* Convert EISAID to a string or simply copy existing string */

	if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
		acpi_ex_eisa_id_to_string(hid->string, obj_desc->integer.value);
	} else {
		ACPI_STRCPY(hid->string, obj_desc->string.pointer);
	}

	hid->length = length;
	*return_id = hid;

cleanup:

	/* On exit, we must delete the return object */

	acpi_ut_remove_reference(obj_desc);
	return_ACPI_STATUS(status);
}

acpi_status
acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
		    struct acpica_device_id **return_id)
{
	union acpi_operand_object *obj_desc;
	struct acpica_device_id *uid;
	u32 length;
	acpi_status status;

	ACPI_FUNCTION_TRACE(ut_execute_UID);

	status = acpi_ut_evaluate_object(device_node, METHOD_NAME__UID,
					 ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING,
					 &obj_desc);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Get the size of the String to be returned, includes null terminator */

	if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
		length = ACPI_MAX64_DECIMAL_DIGITS + 1;
	} else {
		length = obj_desc->string.length + 1;
	}

	/* Allocate a buffer for the UID */

	uid =
	    ACPI_ALLOCATE_ZEROED(sizeof(struct acpica_device_id) +
				 (acpi_size) length);
	if (!uid) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/* Area for the string starts after DEVICE_ID struct */

	uid->string = ACPI_ADD_PTR(char, uid, sizeof(struct acpica_device_id));

	/* Convert an Integer to string, or just copy an existing string */

	if (obj_desc->common.type == ACPI_TYPE_INTEGER) {
		acpi_ex_integer_to_string(uid->string, obj_desc->integer.value);
	} else {
		ACPI_STRCPY(uid->string, obj_desc->string.pointer);
	}

	uid->length = length;
	*return_id = uid;

cleanup:

	/* On exit, we must delete the return object */

	acpi_ut_remove_reference(obj_desc);
	return_ACPI_STATUS(status);
}

void
AcpiDbAddToHistory (
    char                    *CommandLine)
{
    UINT16                  CmdLen;
    UINT16                  BufferLen;

    /* Put command into the next available slot */

    CmdLen = (UINT16) ACPI_STRLEN (CommandLine);
    if (AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command != NULL)
    {
        BufferLen = (UINT16) ACPI_STRLEN (
            AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command);
        if (CmdLen > BufferLen)
        {
            AcpiOsFree (AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].
                Command);
            AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command =
                AcpiOsAllocate (CmdLen + 1);
        }
    }
    else
    {
        AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command =
            AcpiOsAllocate (CmdLen + 1);
    }

    ACPI_STRCPY (AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command,
        CommandLine);

    AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].CmdNum =
        AcpiGbl_NextCmdNum;

    /* Adjust indexes */

    if ((AcpiGbl_NumHistory == HISTORY_SIZE) &&
        (AcpiGbl_NextHistoryIndex == AcpiGbl_LoHistory))
    {
        AcpiGbl_LoHistory++;
        if (AcpiGbl_LoHistory >= HISTORY_SIZE)
        {
            AcpiGbl_LoHistory = 0;
        }
    }

    AcpiGbl_NextHistoryIndex++;
    if (AcpiGbl_NextHistoryIndex >= HISTORY_SIZE)
    {
        AcpiGbl_NextHistoryIndex = 0;
    }

    AcpiGbl_NextCmdNum++;
    if (AcpiGbl_NumHistory < HISTORY_SIZE)
    {
        AcpiGbl_NumHistory++;
    }
}

u8 acpi_ut_safe_strcpy(char *dest, acpi_size dest_size, char *source)
{

	if (ACPI_STRLEN(source) >= dest_size) {
		return (TRUE);
	}

	ACPI_STRCPY(dest, source);
	return (FALSE);
}

void
AcpiDbSetScope (
    char                    *Name)
{
    ACPI_STATUS             Status;
    ACPI_NAMESPACE_NODE     *Node;


    if (!Name || Name[0] == 0)
    {
        AcpiOsPrintf ("Current scope: %s\n", AcpiGbl_DbScopeBuf);
        return;
    }

    AcpiDbPrepNamestring (Name);

    if (Name[0] == '\\')
    {
        /* Validate new scope from the root */

        Status = AcpiNsGetNode (AcpiGbl_RootNode, Name, ACPI_NS_NO_UPSEARCH,
                    &Node);
        if (ACPI_FAILURE (Status))
        {
            goto ErrorExit;
        }

        ACPI_STRCPY (AcpiGbl_DbScopeBuf, Name);
        ACPI_STRCAT (AcpiGbl_DbScopeBuf, "\\");
    }
    else
    {
        /* Validate new scope relative to old scope */

        Status = AcpiNsGetNode (AcpiGbl_DbScopeNode, Name, ACPI_NS_NO_UPSEARCH,
                    &Node);
        if (ACPI_FAILURE (Status))
        {
            goto ErrorExit;
        }

        ACPI_STRCAT (AcpiGbl_DbScopeBuf, Name);
        ACPI_STRCAT (AcpiGbl_DbScopeBuf, "\\");
    }

    AcpiGbl_DbScopeNode = Node;
    AcpiOsPrintf ("New scope: %s\n", AcpiGbl_DbScopeBuf);
    return;

ErrorExit:

    AcpiOsPrintf ("Could not attach scope: %s, %s\n",
        Name, AcpiFormatException (Status));
}

void
AcpiDbUInt32ToHexString (
    UINT32                  Value,
    char                    *Buffer)
{
    UINT8                   i;


    if (Value == 0)
    {
        ACPI_STRCPY (Buffer, "0");
        return;
    }

    ACPI_STRCPY (Buffer, "0x");
    Buffer[10] = '\0';

    for (i = 9; i > 1; i--)
    {
        Buffer[i] = Converter [Value & 0x0F];
        Value = Value >> 4;
    }
}

acpi_status
acpi_ut_execute_SUB(struct acpi_namespace_node *device_node,
		    struct acpi_pnp_device_id **return_id)
{
	union acpi_operand_object *obj_desc;
	struct acpi_pnp_device_id *sub;
	u32 length;
	acpi_status status;

	ACPI_FUNCTION_TRACE(ut_execute_SUB);

	status = acpi_ut_evaluate_object(device_node, METHOD_NAME__SUB,
					 ACPI_BTYPE_STRING, &obj_desc);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Get the size of the String to be returned, includes null terminator */

	length = obj_desc->string.length + 1;

	/* Allocate a buffer for the SUB */

	sub =
	    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pnp_device_id) +
				 (acpi_size) length);
	if (!sub) {
		status = AE_NO_MEMORY;
		goto cleanup;
	}

	/* Area for the string starts after PNP_DEVICE_ID struct */

	sub->string =
	    ACPI_ADD_PTR(char, sub, sizeof(struct acpi_pnp_device_id));

	/* Simply copy existing string */

	ACPI_STRCPY(sub->string, obj_desc->string.pointer);
	sub->length = length;
	*return_id = sub;

cleanup:

	/* On exit, we must delete the return object */

	acpi_ut_remove_reference(obj_desc);
	return_ACPI_STATUS(status);
}

BOOLEAN
AcpiUtSafeStrcpy (
    char                    *Dest,
    ACPI_SIZE               DestSize,
    char                    *Source)
{

    if (ACPI_STRLEN (Source) >= DestSize)
    {
        return (TRUE);
    }

    ACPI_STRCPY (Dest, Source);
    return (FALSE);
}

ACPI_STATUS
AcpiUtDeleteCaches (
    void)
{
#ifdef ACPI_DBG_TRACK_ALLOCATIONS
    char                    Buffer[7];

    if (AcpiGbl_DisplayFinalMemStats)
    {
        ACPI_STRCPY (Buffer, "MEMORY");
        (void) AcpiDbDisplayStatistics (Buffer);
    }
#endif

    (void) AcpiOsDeleteCache (AcpiGbl_NamespaceCache);
    AcpiGbl_NamespaceCache = NULL;

    (void) AcpiOsDeleteCache (AcpiGbl_StateCache);
    AcpiGbl_StateCache = NULL;

    (void) AcpiOsDeleteCache (AcpiGbl_OperandCache);
    AcpiGbl_OperandCache = NULL;

    (void) AcpiOsDeleteCache (AcpiGbl_PsNodeCache);
    AcpiGbl_PsNodeCache = NULL;

    (void) AcpiOsDeleteCache (AcpiGbl_PsNodeExtCache);
    AcpiGbl_PsNodeExtCache = NULL;


#ifdef ACPI_DBG_TRACK_ALLOCATIONS

    /* Debug only - display leftover memory allocation, if any */

    AcpiUtDumpAllocations (ACPI_UINT32_MAX, NULL);

    /* Free memory lists */

    AcpiOsFree (AcpiGbl_GlobalList);
    AcpiGbl_GlobalList = NULL;

    AcpiOsFree (AcpiGbl_NsNodeList);
    AcpiGbl_NsNodeList = NULL;
#endif

    return (AE_OK);
}

ACPI_STATUS
AcpiDmAddToExternalFileList (
    char                    *PathList)
{
    ACPI_EXTERNAL_FILE      *ExternalFile;
    char                    *Path;
    char                    *TmpPath;


    if (!PathList)
    {
        return (AE_OK);
    }

    Path = strtok (PathList, ",");

    while (Path)
    {
        TmpPath = ACPI_ALLOCATE_ZEROED (ACPI_STRLEN (Path) + 1);
        if (!TmpPath)
        {
            return (AE_NO_MEMORY);
        }

        ACPI_STRCPY (TmpPath, Path);

        ExternalFile = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_FILE));
        if (!ExternalFile)
        {
            ACPI_FREE (TmpPath);
            return (AE_NO_MEMORY);
        }

        ExternalFile->Path = TmpPath;

        if (AcpiGbl_ExternalFileList)
        {
            ExternalFile->Next = AcpiGbl_ExternalFileList;
        }

        AcpiGbl_ExternalFileList = ExternalFile;
        Path = strtok (NULL, ",");
    }

    return (AE_OK);
}

static void acpi_ut_copy_id_string(char *destination, char *source)
{

	/*
	 * Workaround for ID strings that have a leading asterisk. This construct
	 * is not allowed by the ACPI specification  (ID strings must be
	 * alphanumeric), but enough existing machines have this embedded in their
	 * ID strings that the following code is useful.
	 */
	if (*source == '*') {
		source++;
	}

	/* Do the actual copy */

	ACPI_STRCPY(destination, source);
}