linux/drivers/acpi/acpica/utnonansi.c

// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/*******************************************************************************
 *
 * Module Name: utnonansi - Non-ansi C library functions
 *
 ******************************************************************************/

#include <acpi/acpi.h>
#include "accommon.h"

#define _COMPONENT …
ACPI_MODULE_NAME("utnonansi")

/*
 * Non-ANSI C library functions - strlwr, strupr, stricmp, and "safe"
 * string functions.
 */
/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_strlwr (strlwr)
 *
 * PARAMETERS:  src_string      - The source string to convert
 *
 * RETURN:      None
 *
 * DESCRIPTION: Convert a string to lowercase
 *
 ******************************************************************************/
void acpi_ut_strlwr(char *src_string)
{ … }

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_strupr (strupr)
 *
 * PARAMETERS:  src_string      - The source string to convert
 *
 * RETURN:      None
 *
 * DESCRIPTION: Convert a string to uppercase
 *
 ******************************************************************************/

void acpi_ut_strupr(char *src_string)
{ … }

/******************************************************************************
 *
 * FUNCTION:    acpi_ut_stricmp (stricmp)
 *
 * PARAMETERS:  string1             - first string to compare
 *              string2             - second string to compare
 *
 * RETURN:      int that signifies string relationship. Zero means strings
 *              are equal.
 *
 * DESCRIPTION: Case-insensitive string compare. Implementation of the
 *              non-ANSI stricmp function.
 *
 ******************************************************************************/

int acpi_ut_stricmp(char *string1, char *string2)
{ … }

#if defined (ACPI_DEBUGGER) || defined (ACPI_APPLICATION) || defined (ACPI_DEBUG_OUTPUT)
/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_safe_strcpy, acpi_ut_safe_strcat, acpi_ut_safe_strncat
 *
 * PARAMETERS:  Adds a "DestSize" parameter to each of the standard string
 *              functions. This is the size of the Destination buffer.
 *
 * RETURN:      TRUE if the operation would overflow the destination buffer.
 *
 * DESCRIPTION: Safe versions of standard Clib string functions. Ensure that
 *              the result of the operation will not overflow the output string
 *              buffer.
 *
 * NOTE:        These functions are typically only helpful for processing
 *              user input and command lines. For most ACPICA code, the
 *              required buffer length is precisely calculated before buffer
 *              allocation, so the use of these functions is unnecessary.
 *
 ******************************************************************************/

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

u8 acpi_ut_safe_strcat(char *dest, acpi_size dest_size, char *source)
{ … }

u8
acpi_ut_safe_strncat(char *dest,
		     acpi_size dest_size,
		     char *source, acpi_size max_transfer_length)
{ … }

void acpi_ut_safe_strncpy(char *dest, char *source, acpi_size dest_size)
{ … }

#endif