cregit-Linux how code gets into the kernel

Release 4.11 drivers/acpi/acpica/tbprint.c

/******************************************************************************
 *
 * Module Name: tbprint - Table output utilities
 *
 *****************************************************************************/

/*
 * 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 "actables.h"


#define _COMPONENT          ACPI_TABLES
ACPI_MODULE_NAME("tbprint")

/* Local prototypes */
static void acpi_tb_fix_string(char *string, acpi_size length);

static void
acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
			     struct acpi_table_header *header);

/*******************************************************************************
 *
 * FUNCTION:    acpi_tb_fix_string
 *
 * PARAMETERS:  string              - String to be repaired
 *              length              - Maximum length
 *
 * RETURN:      None
 *
 * DESCRIPTION: Replace every non-printable or non-ascii byte in the string
 *              with a question mark '?'.
 *
 ******************************************************************************/


static void acpi_tb_fix_string(char *string, acpi_size length) { while (length && *string) { if (!isprint((int)*string)) { *string = '?'; } string++; length--; } }

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Robert Moore47100.00%2100.00%
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/******************************************************************************* * * FUNCTION: acpi_tb_cleanup_table_header * * PARAMETERS: out_header - Where the cleaned header is returned * header - Input ACPI table header * * RETURN: Returns the cleaned header in out_header * * DESCRIPTION: Copy the table header and ensure that all "string" fields in * the header consist of printable characters. * ******************************************************************************/
static void acpi_tb_cleanup_table_header(struct acpi_table_header *out_header, struct acpi_table_header *header) { memcpy(out_header, header, sizeof(struct acpi_table_header)); acpi_tb_fix_string(out_header->signature, ACPI_NAME_SIZE); acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE); acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE); acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAME_SIZE); }

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Robert Moore65100.00%2100.00%
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/******************************************************************************* * * FUNCTION: acpi_tb_print_table_header * * PARAMETERS: address - Table physical address * header - Table header * * RETURN: None * * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP. * ******************************************************************************/
void acpi_tb_print_table_header(acpi_physical_address address, struct acpi_table_header *header) { struct acpi_table_header local_header; if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_FACS)) { /* FACS only has signature and length fields */ ACPI_INFO(("%-4.4s 0x%8.8X%8.8X %06X", header->signature, ACPI_FORMAT_UINT64(address), header->length)); } else if (ACPI_VALIDATE_RSDP_SIG(header->signature)) { /* RSDP has no common fields */ memcpy(local_header.oem_id, ACPI_CAST_PTR(struct acpi_table_rsdp, header)->oem_id, ACPI_OEM_ID_SIZE); acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE); ACPI_INFO(("RSDP 0x%8.8X%8.8X %06X (v%.2d %-6.6s)", ACPI_FORMAT_UINT64(address), (ACPI_CAST_PTR(struct acpi_table_rsdp, header)-> revision > 0) ? ACPI_CAST_PTR(struct acpi_table_rsdp, header)->length : 20, ACPI_CAST_PTR(struct acpi_table_rsdp, header)->revision, local_header.oem_id)); } else { /* Standard ACPI table with full common header */ acpi_tb_cleanup_table_header(&local_header, header); ACPI_INFO(("%-4.4s 0x%8.8X%8.8X" " %06X (v%.2d %-6.6s %-8.8s %08X %-4.4s %08X)", local_header.signature, ACPI_FORMAT_UINT64(address), local_header.length, local_header.revision, local_header.oem_id, local_header.oem_table_id, local_header.oem_revision, local_header.asl_compiler_id, local_header.asl_compiler_revision)); } }

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PersonTokensPropCommitsCommitProp
Robert Moore19496.52%360.00%
Lv Zheng73.48%240.00%
Total201100.00%5100.00%

/******************************************************************************* * * FUNCTION: acpi_tb_validate_checksum * * PARAMETERS: table - ACPI table to verify * length - Length of entire table * * RETURN: Status * * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns * exception on bad checksum. * ******************************************************************************/
acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length) { u8 checksum; /* * FACS/S3PT: * They are the odd tables, have no standard ACPI header and no checksum */ if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_S3PT) || ACPI_COMPARE_NAME(table->signature, ACPI_SIG_FACS)) { return (AE_OK); } /* Compute the checksum on the table */ checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length); /* Checksum ok? (should be zero) */ if (checksum) { ACPI_BIOS_WARNING((AE_INFO, "Incorrect checksum in table [%4.4s] - 0x%2.2X, " "should be 0x%2.2X", table->signature, table->checksum, (u8)(table->checksum - checksum))); #if (ACPI_CHECKSUM_ABORT) return (AE_BAD_CHECKSUM); #endif } return (AE_OK); }

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Robert Moore8475.00%150.00%
Lv Zheng2825.00%150.00%
Total112100.00%2100.00%

/******************************************************************************* * * FUNCTION: acpi_tb_checksum * * PARAMETERS: buffer - Pointer to memory region to be checked * length - Length of this memory region * * RETURN: Checksum (u8) * * DESCRIPTION: Calculates circular checksum of memory region. * ******************************************************************************/
u8 acpi_tb_checksum(u8 *buffer, u32 length) { u8 sum = 0; u8 *end = buffer + length; while (buffer < end) { sum = (u8)(sum + *(buffer++)); } return (sum); }

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Robert Moore53100.00%1100.00%
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Robert Moore49593.40%457.14%
Lv Zheng356.60%342.86%
Total530100.00%7100.00%
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