cregit-Linux how code gets into the kernel

Release 4.11 drivers/acpi/acpica/utstring.c

/*******************************************************************************
 *
 * Module Name: utstring - Common functions for strings and characters
 *
 ******************************************************************************/

/*
 * 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"
#include "acnamesp.h"


#define _COMPONENT          ACPI_UTILITIES
ACPI_MODULE_NAME("utstring")

/*******************************************************************************
 *
 * FUNCTION:    acpi_ut_print_string
 *
 * PARAMETERS:  string          - Null terminated ASCII string
 *              max_length      - Maximum output length. Used to constrain the
 *                                length of strings during debug output only.
 *
 * RETURN:      None
 *
 * DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
 *              sequences.
 *
 ******************************************************************************/

void acpi_ut_print_string(char *string, u16 max_length) { u32 i; if (!string) { acpi_os_printf("<\"NULL STRING PTR\">"); return; } acpi_os_printf("\""); for (i = 0; (i < max_length) && string[i]; i++) { /* Escape sequences */ switch (string[i]) { case 0x07: acpi_os_printf("\\a"); /* BELL */ break; case 0x08: acpi_os_printf("\\b"); /* BACKSPACE */ break; case 0x0C: acpi_os_printf("\\f"); /* FORMFEED */ break; case 0x0A: acpi_os_printf("\\n"); /* LINEFEED */ break; case 0x0D: acpi_os_printf("\\r"); /* CARRIAGE RETURN */ break; case 0x09: acpi_os_printf("\\t"); /* HORIZONTAL TAB */ break; case 0x0B: acpi_os_printf("\\v"); /* VERTICAL TAB */ break; case '\'': /* Single Quote */ case '\"': /* Double Quote */ case '\\': /* Backslash */ acpi_os_printf("\\%c", (int)string[i]); break; default: /* Check for printable character or hex escape */ if (isprint((int)string[i])) { /* This is a normal character */ acpi_os_printf("%c", (int)string[i]); } else { /* All others will be Hex escapes */ acpi_os_printf("\\x%2.2X", (s32)string[i]); } break; } } acpi_os_printf("\""); if (i == max_length && string[i]) { acpi_os_printf("..."); } }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore22897.85%375.00%
David Binderman52.15%125.00%
Total233100.00%4100.00%

/******************************************************************************* * * FUNCTION: acpi_ut_repair_name * * PARAMETERS: name - The ACPI name to be repaired * * RETURN: Repaired version of the name * * DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and * return the new name. NOTE: the Name parameter must reside in * read/write memory, cannot be a const. * * An ACPI Name must consist of valid ACPI characters. We will repair the name * if necessary because we don't want to abort because of this, but we want * all namespace names to be printable. A warning message is appropriate. * * This issue came up because there are in fact machines that exhibit * this problem, and we want to be able to enable ACPI support for them, * even though there are a few bad names. * ******************************************************************************/
void acpi_ut_repair_name(char *name) { u32 i; u8 found_bad_char = FALSE; u32 original_name; ACPI_FUNCTION_NAME(ut_repair_name); /* * Special case for the root node. This can happen if we get an * error during the execution of module-level code. */ if (ACPI_COMPARE_NAME(name, "\\___")) { return; } ACPI_MOVE_NAME(&original_name, name); /* Check each character in the name */ for (i = 0; i < ACPI_NAME_SIZE; i++) { if (acpi_ut_valid_name_char(name[i], i)) { continue; } /* * Replace a bad character with something printable, yet technically * still invalid. This prevents any collisions with existing "good" * names in the namespace. */ name[i] = '*'; found_bad_char = TRUE; } if (found_bad_char) { /* Report warning only if in strict mode or debug mode */ if (!acpi_gbl_enable_interpreter_slack) { ACPI_WARNING((AE_INFO, "Invalid character(s) in name (0x%.8X), repaired: [%4.4s]", original_name, name)); } else { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Invalid character(s) in name (0x%.8X), repaired: [%4.4s]", original_name, name)); } } }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore132100.00%3100.00%
Total132100.00%3100.00%

#if defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP /******************************************************************************* * * FUNCTION: ut_convert_backslashes * * PARAMETERS: pathname - File pathname string to be converted * * RETURN: Modifies the input Pathname * * DESCRIPTION: Convert all backslashes (0x5C) to forward slashes (0x2F) within * the entire input file pathname string. * ******************************************************************************/
void ut_convert_backslashes(char *pathname) { if (!pathname) { return; } while (*pathname) { if (*pathname == '\\') { *pathname = '/'; } pathname++; } }

Contributors

PersonTokensPropCommitsCommitProp
Robert Moore41100.00%1100.00%
Total41100.00%1100.00%

#endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Robert Moore43298.86%685.71%
David Binderman51.14%114.29%
Total437100.00%7100.00%
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