141 lines
4.5 KiB
C
141 lines
4.5 KiB
C
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* Module Name: utascii - Utility ascii functions
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2000 - 2017, Intel Corp.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions, and the following disclaimer,
|
||
|
|
* without modification.
|
||
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
||
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
||
|
|
* including a substantially similar Disclaimer requirement for further
|
||
|
|
* binary redistribution.
|
||
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
||
|
|
* of any contributors may be used to endorse or promote products derived
|
||
|
|
* from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* Alternatively, this software may be distributed under the terms of the
|
||
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
||
|
|
* Software Foundation.
|
||
|
|
*
|
||
|
|
* NO WARRANTY
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
||
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <acpi/acpi.h>
|
||
|
|
#include "accommon.h"
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ut_valid_nameseg
|
||
|
|
*
|
||
|
|
* PARAMETERS: name - The name or table signature to be examined.
|
||
|
|
* Four characters, does not have to be a
|
||
|
|
* NULL terminated string.
|
||
|
|
*
|
||
|
|
* RETURN: TRUE if signature is has 4 valid ACPI characters
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Validate an ACPI table signature.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
u8 acpi_ut_valid_nameseg(char *name)
|
||
|
|
{
|
||
|
|
u32 i;
|
||
|
|
|
||
|
|
/* Validate each character in the signature */
|
||
|
|
|
||
|
|
for (i = 0; i < ACPI_NAME_SIZE; i++) {
|
||
|
|
if (!acpi_ut_valid_name_char(name[i], i)) {
|
||
|
|
return (FALSE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ut_valid_name_char
|
||
|
|
*
|
||
|
|
* PARAMETERS: char - The character to be examined
|
||
|
|
* position - Byte position (0-3)
|
||
|
|
*
|
||
|
|
* RETURN: TRUE if the character is valid, FALSE otherwise
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Check for a valid ACPI character. Must be one of:
|
||
|
|
* 1) Upper case alpha
|
||
|
|
* 2) numeric
|
||
|
|
* 3) underscore
|
||
|
|
*
|
||
|
|
* We allow a '!' as the last character because of the ASF! table
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
u8 acpi_ut_valid_name_char(char character, u32 position)
|
||
|
|
{
|
||
|
|
|
||
|
|
if (!((character >= 'A' && character <= 'Z') ||
|
||
|
|
(character >= '0' && character <= '9') || (character == '_'))) {
|
||
|
|
|
||
|
|
/* Allow a '!' in the last position */
|
||
|
|
|
||
|
|
if (character == '!' && position == 3) {
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_ut_check_and_repair_ascii
|
||
|
|
*
|
||
|
|
* PARAMETERS: name - Ascii string
|
||
|
|
* count - Number of characters to check
|
||
|
|
*
|
||
|
|
* RETURN: None
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Ensure that the requested number of characters are printable
|
||
|
|
* Ascii characters. Sets non-printable and null chars to <space>.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
void acpi_ut_check_and_repair_ascii(u8 *name, char *repaired_name, u32 count)
|
||
|
|
{
|
||
|
|
u32 i;
|
||
|
|
|
||
|
|
for (i = 0; i < count; i++) {
|
||
|
|
repaired_name[i] = (char)name[i];
|
||
|
|
|
||
|
|
if (!name[i]) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (!isprint(name[i])) {
|
||
|
|
repaired_name[i] = ' ';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|