acfileio.c revision 1.1.1.1.2.5
1 1.1.1.1.2.2 skrll /****************************************************************************** 2 1.1.1.1.2.2 skrll * 3 1.1.1.1.2.2 skrll * Module Name: acfileio - Get ACPI tables from file 4 1.1.1.1.2.2 skrll * 5 1.1.1.1.2.2 skrll *****************************************************************************/ 6 1.1.1.1.2.2 skrll 7 1.1.1.1.2.2 skrll /* 8 1.1.1.1.2.5 skrll * Copyright (C) 2000 - 2017, Intel Corp. 9 1.1.1.1.2.2 skrll * All rights reserved. 10 1.1.1.1.2.2 skrll * 11 1.1.1.1.2.2 skrll * Redistribution and use in source and binary forms, with or without 12 1.1.1.1.2.2 skrll * modification, are permitted provided that the following conditions 13 1.1.1.1.2.2 skrll * are met: 14 1.1.1.1.2.2 skrll * 1. Redistributions of source code must retain the above copyright 15 1.1.1.1.2.2 skrll * notice, this list of conditions, and the following disclaimer, 16 1.1.1.1.2.2 skrll * without modification. 17 1.1.1.1.2.2 skrll * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.1.1.1.2.2 skrll * substantially similar to the "NO WARRANTY" disclaimer below 19 1.1.1.1.2.2 skrll * ("Disclaimer") and any redistribution must be conditioned upon 20 1.1.1.1.2.2 skrll * including a substantially similar Disclaimer requirement for further 21 1.1.1.1.2.2 skrll * binary redistribution. 22 1.1.1.1.2.2 skrll * 3. Neither the names of the above-listed copyright holders nor the names 23 1.1.1.1.2.2 skrll * of any contributors may be used to endorse or promote products derived 24 1.1.1.1.2.2 skrll * from this software without specific prior written permission. 25 1.1.1.1.2.2 skrll * 26 1.1.1.1.2.2 skrll * Alternatively, this software may be distributed under the terms of the 27 1.1.1.1.2.2 skrll * GNU General Public License ("GPL") version 2 as published by the Free 28 1.1.1.1.2.2 skrll * Software Foundation. 29 1.1.1.1.2.2 skrll * 30 1.1.1.1.2.2 skrll * NO WARRANTY 31 1.1.1.1.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.1.1.1.2.2 skrll * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.1.1.1.2.2 skrll * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.1.1.1.2.2 skrll * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.1.1.1.2.2 skrll * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.1.1.1.2.2 skrll * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.1.1.1.2.2 skrll * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.1.1.1.2.2 skrll * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.1.1.1.2.2 skrll * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.1.1.1.2.2 skrll * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.1.1.1.2.2 skrll * POSSIBILITY OF SUCH DAMAGES. 42 1.1.1.1.2.2 skrll */ 43 1.1.1.1.2.2 skrll 44 1.1.1.1.2.2 skrll #include "acpi.h" 45 1.1.1.1.2.2 skrll #include "accommon.h" 46 1.1.1.1.2.2 skrll #include "actables.h" 47 1.1.1.1.2.2 skrll #include "acutils.h" 48 1.1.1.1.2.4 skrll #include "acapps.h" 49 1.1.1.1.2.2 skrll 50 1.1.1.1.2.2 skrll #define _COMPONENT ACPI_UTILITIES 51 1.1.1.1.2.2 skrll ACPI_MODULE_NAME ("acfileio") 52 1.1.1.1.2.2 skrll 53 1.1.1.1.2.2 skrll 54 1.1.1.1.2.2 skrll /* Local prototypes */ 55 1.1.1.1.2.2 skrll 56 1.1.1.1.2.2 skrll static ACPI_STATUS 57 1.1.1.1.2.2 skrll AcGetOneTableFromFile ( 58 1.1.1.1.2.2 skrll char *Filename, 59 1.1.1.1.2.2 skrll FILE *File, 60 1.1.1.1.2.2 skrll UINT8 GetOnlyAmlTables, 61 1.1.1.1.2.2 skrll ACPI_TABLE_HEADER **Table); 62 1.1.1.1.2.2 skrll 63 1.1.1.1.2.2 skrll static ACPI_STATUS 64 1.1.1.1.2.2 skrll AcCheckTextModeCorruption ( 65 1.1.1.1.2.2 skrll ACPI_TABLE_HEADER *Table); 66 1.1.1.1.2.2 skrll 67 1.1.1.1.2.2 skrll 68 1.1.1.1.2.2 skrll /******************************************************************************* 69 1.1.1.1.2.2 skrll * 70 1.1.1.1.2.2 skrll * FUNCTION: AcGetAllTablesFromFile 71 1.1.1.1.2.2 skrll * 72 1.1.1.1.2.2 skrll * PARAMETERS: Filename - Table filename 73 1.1.1.1.2.2 skrll * GetOnlyAmlTables - TRUE if the tables must be AML tables 74 1.1.1.1.2.2 skrll * ReturnListHead - Where table list is returned 75 1.1.1.1.2.2 skrll * 76 1.1.1.1.2.2 skrll * RETURN: Status 77 1.1.1.1.2.2 skrll * 78 1.1.1.1.2.2 skrll * DESCRIPTION: Get all ACPI tables from within a single file. 79 1.1.1.1.2.2 skrll * 80 1.1.1.1.2.2 skrll ******************************************************************************/ 81 1.1.1.1.2.2 skrll 82 1.1.1.1.2.2 skrll ACPI_STATUS 83 1.1.1.1.2.2 skrll AcGetAllTablesFromFile ( 84 1.1.1.1.2.2 skrll char *Filename, 85 1.1.1.1.2.2 skrll UINT8 GetOnlyAmlTables, 86 1.1.1.1.2.2 skrll ACPI_NEW_TABLE_DESC **ReturnListHead) 87 1.1.1.1.2.2 skrll { 88 1.1.1.1.2.2 skrll ACPI_NEW_TABLE_DESC *ListHead = NULL; 89 1.1.1.1.2.2 skrll ACPI_NEW_TABLE_DESC *ListTail = NULL; 90 1.1.1.1.2.2 skrll ACPI_NEW_TABLE_DESC *TableDesc; 91 1.1.1.1.2.2 skrll FILE *File; 92 1.1.1.1.2.2 skrll ACPI_TABLE_HEADER *Table = NULL; 93 1.1.1.1.2.2 skrll UINT32 FileSize; 94 1.1.1.1.2.2 skrll ACPI_STATUS Status = AE_OK; 95 1.1.1.1.2.2 skrll 96 1.1.1.1.2.2 skrll 97 1.1.1.1.2.2 skrll File = fopen (Filename, "rb"); 98 1.1.1.1.2.2 skrll if (!File) 99 1.1.1.1.2.2 skrll { 100 1.1.1.1.2.4 skrll fprintf (stderr, "Could not open input file: %s\n", Filename); 101 1.1.1.1.2.2 skrll if (errno == ENOENT) 102 1.1.1.1.2.2 skrll { 103 1.1.1.1.2.2 skrll return (AE_NOT_EXIST); 104 1.1.1.1.2.2 skrll } 105 1.1.1.1.2.2 skrll 106 1.1.1.1.2.2 skrll return (AE_ERROR); 107 1.1.1.1.2.2 skrll } 108 1.1.1.1.2.2 skrll 109 1.1.1.1.2.2 skrll /* Get the file size */ 110 1.1.1.1.2.2 skrll 111 1.1.1.1.2.2 skrll FileSize = CmGetFileSize (File); 112 1.1.1.1.2.2 skrll if (FileSize == ACPI_UINT32_MAX) 113 1.1.1.1.2.2 skrll { 114 1.1.1.1.2.3 skrll Status = AE_ERROR; 115 1.1.1.1.2.5 skrll goto Exit; 116 1.1.1.1.2.2 skrll } 117 1.1.1.1.2.2 skrll 118 1.1.1.1.2.2 skrll fprintf (stderr, 119 1.1.1.1.2.2 skrll "Input file %s, Length 0x%X (%u) bytes\n", 120 1.1.1.1.2.2 skrll Filename, FileSize, FileSize); 121 1.1.1.1.2.2 skrll 122 1.1.1.1.2.2 skrll /* We must have at least one ACPI table header */ 123 1.1.1.1.2.2 skrll 124 1.1.1.1.2.2 skrll if (FileSize < sizeof (ACPI_TABLE_HEADER)) 125 1.1.1.1.2.2 skrll { 126 1.1.1.1.2.3 skrll Status = AE_BAD_HEADER; 127 1.1.1.1.2.5 skrll goto Exit; 128 1.1.1.1.2.2 skrll } 129 1.1.1.1.2.2 skrll 130 1.1.1.1.2.2 skrll /* Check for an non-binary file */ 131 1.1.1.1.2.2 skrll 132 1.1.1.1.2.2 skrll if (!AcIsFileBinary (File)) 133 1.1.1.1.2.2 skrll { 134 1.1.1.1.2.2 skrll fprintf (stderr, 135 1.1.1.1.2.2 skrll " %s: File does not appear to contain a valid AML table\n", 136 1.1.1.1.2.2 skrll Filename); 137 1.1.1.1.2.5 skrll Status = AE_TYPE; 138 1.1.1.1.2.5 skrll goto Exit; 139 1.1.1.1.2.2 skrll } 140 1.1.1.1.2.2 skrll 141 1.1.1.1.2.2 skrll /* Read all tables within the file */ 142 1.1.1.1.2.2 skrll 143 1.1.1.1.2.2 skrll while (ACPI_SUCCESS (Status)) 144 1.1.1.1.2.2 skrll { 145 1.1.1.1.2.2 skrll /* Get one entire ACPI table */ 146 1.1.1.1.2.2 skrll 147 1.1.1.1.2.2 skrll Status = AcGetOneTableFromFile ( 148 1.1.1.1.2.2 skrll Filename, File, GetOnlyAmlTables, &Table); 149 1.1.1.1.2.2 skrll 150 1.1.1.1.2.2 skrll if (Status == AE_CTRL_TERMINATE) 151 1.1.1.1.2.2 skrll { 152 1.1.1.1.2.2 skrll Status = AE_OK; 153 1.1.1.1.2.2 skrll break; 154 1.1.1.1.2.2 skrll } 155 1.1.1.1.2.2 skrll else if (Status == AE_TYPE) 156 1.1.1.1.2.2 skrll { 157 1.1.1.1.2.5 skrll Status = AE_OK; 158 1.1.1.1.2.5 skrll goto Exit; 159 1.1.1.1.2.2 skrll } 160 1.1.1.1.2.2 skrll else if (ACPI_FAILURE (Status)) 161 1.1.1.1.2.2 skrll { 162 1.1.1.1.2.5 skrll goto Exit; 163 1.1.1.1.2.2 skrll } 164 1.1.1.1.2.2 skrll 165 1.1.1.1.2.2 skrll /* Print table header for iASL/disassembler only */ 166 1.1.1.1.2.2 skrll 167 1.1.1.1.2.2 skrll #ifdef ACPI_ASL_COMPILER 168 1.1.1.1.2.2 skrll 169 1.1.1.1.2.5 skrll AcpiTbPrintTableHeader (0, Table); 170 1.1.1.1.2.2 skrll #endif 171 1.1.1.1.2.2 skrll 172 1.1.1.1.2.2 skrll /* Allocate and link a table descriptor */ 173 1.1.1.1.2.2 skrll 174 1.1.1.1.2.2 skrll TableDesc = AcpiOsAllocate (sizeof (ACPI_NEW_TABLE_DESC)); 175 1.1.1.1.2.5 skrll if (!TableDesc) 176 1.1.1.1.2.5 skrll { 177 1.1.1.1.2.5 skrll AcpiOsFree (Table); 178 1.1.1.1.2.5 skrll Status = AE_NO_MEMORY; 179 1.1.1.1.2.5 skrll goto Exit; 180 1.1.1.1.2.5 skrll } 181 1.1.1.1.2.5 skrll 182 1.1.1.1.2.2 skrll TableDesc->Table = Table; 183 1.1.1.1.2.2 skrll TableDesc->Next = NULL; 184 1.1.1.1.2.2 skrll 185 1.1.1.1.2.2 skrll /* Link at the end of the local table list */ 186 1.1.1.1.2.2 skrll 187 1.1.1.1.2.2 skrll if (!ListHead) 188 1.1.1.1.2.2 skrll { 189 1.1.1.1.2.2 skrll ListHead = TableDesc; 190 1.1.1.1.2.2 skrll ListTail = TableDesc; 191 1.1.1.1.2.2 skrll } 192 1.1.1.1.2.2 skrll else 193 1.1.1.1.2.2 skrll { 194 1.1.1.1.2.2 skrll ListTail->Next = TableDesc; 195 1.1.1.1.2.2 skrll ListTail = TableDesc; 196 1.1.1.1.2.2 skrll } 197 1.1.1.1.2.2 skrll } 198 1.1.1.1.2.2 skrll 199 1.1.1.1.2.2 skrll /* Add the local table list to the end of the global list */ 200 1.1.1.1.2.2 skrll 201 1.1.1.1.2.2 skrll if (*ReturnListHead) 202 1.1.1.1.2.2 skrll { 203 1.1.1.1.2.2 skrll ListTail = *ReturnListHead; 204 1.1.1.1.2.2 skrll while (ListTail->Next) 205 1.1.1.1.2.2 skrll { 206 1.1.1.1.2.2 skrll ListTail = ListTail->Next; 207 1.1.1.1.2.2 skrll } 208 1.1.1.1.2.2 skrll 209 1.1.1.1.2.2 skrll ListTail->Next = ListHead; 210 1.1.1.1.2.2 skrll } 211 1.1.1.1.2.2 skrll else 212 1.1.1.1.2.2 skrll { 213 1.1.1.1.2.2 skrll *ReturnListHead = ListHead; 214 1.1.1.1.2.2 skrll } 215 1.1.1.1.2.2 skrll 216 1.1.1.1.2.5 skrll Exit: 217 1.1.1.1.2.2 skrll fclose(File); 218 1.1.1.1.2.2 skrll return (Status); 219 1.1.1.1.2.2 skrll } 220 1.1.1.1.2.2 skrll 221 1.1.1.1.2.2 skrll 222 1.1.1.1.2.2 skrll /******************************************************************************* 223 1.1.1.1.2.2 skrll * 224 1.1.1.1.2.2 skrll * FUNCTION: AcGetOneTableFromFile 225 1.1.1.1.2.2 skrll * 226 1.1.1.1.2.2 skrll * PARAMETERS: Filename - File where table is located 227 1.1.1.1.2.2 skrll * File - Open FILE pointer to Filename 228 1.1.1.1.2.2 skrll * GetOnlyAmlTables - TRUE if the tables must be AML tables. 229 1.1.1.1.2.2 skrll * ReturnTable - Where a pointer to the table is returned 230 1.1.1.1.2.2 skrll * 231 1.1.1.1.2.2 skrll * RETURN: Status 232 1.1.1.1.2.2 skrll * 233 1.1.1.1.2.2 skrll * DESCRIPTION: Read the next ACPI table from a file. Implements support 234 1.1.1.1.2.2 skrll * for multiple tables within a single file. File must already 235 1.1.1.1.2.2 skrll * be open. 236 1.1.1.1.2.2 skrll * 237 1.1.1.1.2.2 skrll * Note: Loading an RSDP is not supported. 238 1.1.1.1.2.2 skrll * 239 1.1.1.1.2.2 skrll ******************************************************************************/ 240 1.1.1.1.2.2 skrll 241 1.1.1.1.2.2 skrll static ACPI_STATUS 242 1.1.1.1.2.2 skrll AcGetOneTableFromFile ( 243 1.1.1.1.2.2 skrll char *Filename, 244 1.1.1.1.2.2 skrll FILE *File, 245 1.1.1.1.2.2 skrll UINT8 GetOnlyAmlTables, 246 1.1.1.1.2.2 skrll ACPI_TABLE_HEADER **ReturnTable) 247 1.1.1.1.2.2 skrll { 248 1.1.1.1.2.2 skrll ACPI_STATUS Status = AE_OK; 249 1.1.1.1.2.2 skrll ACPI_TABLE_HEADER TableHeader; 250 1.1.1.1.2.2 skrll ACPI_TABLE_HEADER *Table; 251 1.1.1.1.2.2 skrll INT32 Count; 252 1.1.1.1.2.2 skrll long TableOffset; 253 1.1.1.1.2.2 skrll 254 1.1.1.1.2.2 skrll 255 1.1.1.1.2.2 skrll *ReturnTable = NULL; 256 1.1.1.1.2.2 skrll 257 1.1.1.1.2.2 skrll /* Get the table header to examine signature and length */ 258 1.1.1.1.2.2 skrll 259 1.1.1.1.2.2 skrll TableOffset = ftell (File); 260 1.1.1.1.2.2 skrll Count = fread (&TableHeader, 1, sizeof (ACPI_TABLE_HEADER), File); 261 1.1.1.1.2.2 skrll if (Count != sizeof (ACPI_TABLE_HEADER)) 262 1.1.1.1.2.2 skrll { 263 1.1.1.1.2.2 skrll return (AE_CTRL_TERMINATE); 264 1.1.1.1.2.2 skrll } 265 1.1.1.1.2.2 skrll 266 1.1.1.1.2.2 skrll /* Validate the table signature/header (limited ASCII chars) */ 267 1.1.1.1.2.2 skrll 268 1.1.1.1.2.2 skrll Status = AcValidateTableHeader (File, TableOffset); 269 1.1.1.1.2.2 skrll if (ACPI_FAILURE (Status)) 270 1.1.1.1.2.2 skrll { 271 1.1.1.1.2.2 skrll return (Status); 272 1.1.1.1.2.2 skrll } 273 1.1.1.1.2.2 skrll 274 1.1.1.1.2.2 skrll if (GetOnlyAmlTables) 275 1.1.1.1.2.2 skrll { 276 1.1.1.1.2.4 skrll /* 277 1.1.1.1.2.4 skrll * Table must be an AML table (DSDT/SSDT). 278 1.1.1.1.2.4 skrll * Used for iASL -e option only. 279 1.1.1.1.2.4 skrll */ 280 1.1.1.1.2.4 skrll if (!AcpiUtIsAmlTable (&TableHeader)) 281 1.1.1.1.2.2 skrll { 282 1.1.1.1.2.2 skrll fprintf (stderr, 283 1.1.1.1.2.2 skrll " %s: Table [%4.4s] is not an AML table - ignoring\n", 284 1.1.1.1.2.2 skrll Filename, TableHeader.Signature); 285 1.1.1.1.2.2 skrll 286 1.1.1.1.2.2 skrll return (AE_TYPE); 287 1.1.1.1.2.2 skrll } 288 1.1.1.1.2.2 skrll } 289 1.1.1.1.2.2 skrll 290 1.1.1.1.2.2 skrll /* Allocate a buffer for the entire table */ 291 1.1.1.1.2.2 skrll 292 1.1.1.1.2.4 skrll Table = AcpiOsAllocate ((ACPI_SIZE) TableHeader.Length); 293 1.1.1.1.2.2 skrll if (!Table) 294 1.1.1.1.2.2 skrll { 295 1.1.1.1.2.2 skrll return (AE_NO_MEMORY); 296 1.1.1.1.2.2 skrll } 297 1.1.1.1.2.2 skrll 298 1.1.1.1.2.2 skrll /* Read the entire ACPI table, including header */ 299 1.1.1.1.2.2 skrll 300 1.1.1.1.2.2 skrll fseek (File, TableOffset, SEEK_SET); 301 1.1.1.1.2.2 skrll 302 1.1.1.1.2.2 skrll Count = fread (Table, 1, TableHeader.Length, File); 303 1.1.1.1.2.2 skrll if (Count != (INT32) TableHeader.Length) 304 1.1.1.1.2.2 skrll { 305 1.1.1.1.2.2 skrll Status = AE_ERROR; 306 1.1.1.1.2.2 skrll goto ErrorExit; 307 1.1.1.1.2.2 skrll } 308 1.1.1.1.2.2 skrll 309 1.1.1.1.2.2 skrll /* Validate the checksum (just issue a warning) */ 310 1.1.1.1.2.2 skrll 311 1.1.1.1.2.2 skrll Status = AcpiTbVerifyChecksum (Table, TableHeader.Length); 312 1.1.1.1.2.2 skrll if (ACPI_FAILURE (Status)) 313 1.1.1.1.2.2 skrll { 314 1.1.1.1.2.2 skrll Status = AcCheckTextModeCorruption (Table); 315 1.1.1.1.2.2 skrll if (ACPI_FAILURE (Status)) 316 1.1.1.1.2.2 skrll { 317 1.1.1.1.2.2 skrll goto ErrorExit; 318 1.1.1.1.2.2 skrll } 319 1.1.1.1.2.2 skrll } 320 1.1.1.1.2.2 skrll 321 1.1.1.1.2.2 skrll *ReturnTable = Table; 322 1.1.1.1.2.2 skrll return (AE_OK); 323 1.1.1.1.2.2 skrll 324 1.1.1.1.2.2 skrll 325 1.1.1.1.2.2 skrll ErrorExit: 326 1.1.1.1.2.2 skrll AcpiOsFree (Table); 327 1.1.1.1.2.2 skrll return (Status); 328 1.1.1.1.2.2 skrll } 329 1.1.1.1.2.2 skrll 330 1.1.1.1.2.2 skrll 331 1.1.1.1.2.2 skrll /******************************************************************************* 332 1.1.1.1.2.2 skrll * 333 1.1.1.1.2.2 skrll * FUNCTION: AcIsFileBinary 334 1.1.1.1.2.2 skrll * 335 1.1.1.1.2.2 skrll * PARAMETERS: File - Open input file 336 1.1.1.1.2.2 skrll * 337 1.1.1.1.2.2 skrll * RETURN: TRUE if file appears to be binary 338 1.1.1.1.2.2 skrll * 339 1.1.1.1.2.2 skrll * DESCRIPTION: Scan a file for any non-ASCII bytes. 340 1.1.1.1.2.2 skrll * 341 1.1.1.1.2.2 skrll * Note: Maintains current file position. 342 1.1.1.1.2.2 skrll * 343 1.1.1.1.2.2 skrll ******************************************************************************/ 344 1.1.1.1.2.2 skrll 345 1.1.1.1.2.2 skrll BOOLEAN 346 1.1.1.1.2.2 skrll AcIsFileBinary ( 347 1.1.1.1.2.2 skrll FILE *File) 348 1.1.1.1.2.2 skrll { 349 1.1.1.1.2.2 skrll UINT8 Byte; 350 1.1.1.1.2.2 skrll BOOLEAN IsBinary = FALSE; 351 1.1.1.1.2.2 skrll long FileOffset; 352 1.1.1.1.2.2 skrll 353 1.1.1.1.2.2 skrll 354 1.1.1.1.2.2 skrll /* Scan entire file for any non-ASCII bytes */ 355 1.1.1.1.2.2 skrll 356 1.1.1.1.2.2 skrll FileOffset = ftell (File); 357 1.1.1.1.2.2 skrll while (fread (&Byte, 1, 1, File) == 1) 358 1.1.1.1.2.2 skrll { 359 1.1.1.1.2.2 skrll if (!isprint (Byte) && !isspace (Byte)) 360 1.1.1.1.2.2 skrll { 361 1.1.1.1.2.2 skrll IsBinary = TRUE; 362 1.1.1.1.2.2 skrll goto Exit; 363 1.1.1.1.2.2 skrll } 364 1.1.1.1.2.2 skrll } 365 1.1.1.1.2.2 skrll 366 1.1.1.1.2.2 skrll Exit: 367 1.1.1.1.2.2 skrll fseek (File, FileOffset, SEEK_SET); 368 1.1.1.1.2.2 skrll return (IsBinary); 369 1.1.1.1.2.2 skrll } 370 1.1.1.1.2.2 skrll 371 1.1.1.1.2.2 skrll 372 1.1.1.1.2.2 skrll /******************************************************************************* 373 1.1.1.1.2.2 skrll * 374 1.1.1.1.2.2 skrll * FUNCTION: AcValidateTableHeader 375 1.1.1.1.2.2 skrll * 376 1.1.1.1.2.2 skrll * PARAMETERS: File - Open input file 377 1.1.1.1.2.2 skrll * 378 1.1.1.1.2.2 skrll * RETURN: Status 379 1.1.1.1.2.2 skrll * 380 1.1.1.1.2.2 skrll * DESCRIPTION: Determine if a file seems to contain one or more binary ACPI 381 1.1.1.1.2.2 skrll * tables, via the 382 1.1.1.1.2.2 skrll * following checks on what would be the table header: 383 1.1.1.1.2.2 skrll * 1) File must be at least as long as an ACPI_TABLE_HEADER 384 1.1.1.1.2.2 skrll * 2) There must be enough room in the file to hold entire table 385 1.1.1.1.2.2 skrll * 3) Signature, OemId, OemTableId, AslCompilerId must be ASCII 386 1.1.1.1.2.2 skrll * 387 1.1.1.1.2.2 skrll * Note: There can be multiple definition blocks per file, so we cannot 388 1.1.1.1.2.2 skrll * expect/compare the file size to be equal to the table length. 12/2015. 389 1.1.1.1.2.2 skrll * 390 1.1.1.1.2.2 skrll * Note: Maintains current file position. 391 1.1.1.1.2.2 skrll * 392 1.1.1.1.2.2 skrll ******************************************************************************/ 393 1.1.1.1.2.2 skrll 394 1.1.1.1.2.2 skrll ACPI_STATUS 395 1.1.1.1.2.2 skrll AcValidateTableHeader ( 396 1.1.1.1.2.2 skrll FILE *File, 397 1.1.1.1.2.2 skrll long TableOffset) 398 1.1.1.1.2.2 skrll { 399 1.1.1.1.2.2 skrll ACPI_TABLE_HEADER TableHeader; 400 1.1.1.1.2.4 skrll ACPI_SIZE Actual; 401 1.1.1.1.2.2 skrll long OriginalOffset; 402 1.1.1.1.2.2 skrll UINT32 FileSize; 403 1.1.1.1.2.2 skrll UINT32 i; 404 1.1.1.1.2.2 skrll 405 1.1.1.1.2.2 skrll 406 1.1.1.1.2.5 skrll ACPI_FUNCTION_TRACE (AcValidateTableHeader); 407 1.1.1.1.2.2 skrll 408 1.1.1.1.2.2 skrll 409 1.1.1.1.2.2 skrll /* Read a potential table header */ 410 1.1.1.1.2.2 skrll 411 1.1.1.1.2.2 skrll OriginalOffset = ftell (File); 412 1.1.1.1.2.2 skrll fseek (File, TableOffset, SEEK_SET); 413 1.1.1.1.2.2 skrll 414 1.1.1.1.2.2 skrll Actual = fread (&TableHeader, 1, sizeof (ACPI_TABLE_HEADER), File); 415 1.1.1.1.2.2 skrll fseek (File, OriginalOffset, SEEK_SET); 416 1.1.1.1.2.2 skrll 417 1.1.1.1.2.2 skrll if (Actual < sizeof (ACPI_TABLE_HEADER)) 418 1.1.1.1.2.2 skrll { 419 1.1.1.1.2.2 skrll return (AE_ERROR); 420 1.1.1.1.2.2 skrll } 421 1.1.1.1.2.2 skrll 422 1.1.1.1.2.2 skrll /* Validate the signature (limited ASCII chars) */ 423 1.1.1.1.2.2 skrll 424 1.1.1.1.2.3 skrll if (!AcpiUtValidNameseg (TableHeader.Signature)) 425 1.1.1.1.2.2 skrll { 426 1.1.1.1.2.2 skrll fprintf (stderr, "Invalid table signature: 0x%8.8X\n", 427 1.1.1.1.2.2 skrll *ACPI_CAST_PTR (UINT32, TableHeader.Signature)); 428 1.1.1.1.2.2 skrll return (AE_BAD_SIGNATURE); 429 1.1.1.1.2.2 skrll } 430 1.1.1.1.2.2 skrll 431 1.1.1.1.2.2 skrll /* Validate table length against bytes remaining in the file */ 432 1.1.1.1.2.2 skrll 433 1.1.1.1.2.2 skrll FileSize = CmGetFileSize (File); 434 1.1.1.1.2.2 skrll if (TableHeader.Length > (UINT32) (FileSize - TableOffset)) 435 1.1.1.1.2.2 skrll { 436 1.1.1.1.2.2 skrll fprintf (stderr, "Table [%4.4s] is too long for file - " 437 1.1.1.1.2.2 skrll "needs: 0x%.2X, remaining in file: 0x%.2X\n", 438 1.1.1.1.2.2 skrll TableHeader.Signature, TableHeader.Length, 439 1.1.1.1.2.2 skrll (UINT32) (FileSize - TableOffset)); 440 1.1.1.1.2.2 skrll return (AE_BAD_HEADER); 441 1.1.1.1.2.2 skrll } 442 1.1.1.1.2.2 skrll 443 1.1.1.1.2.2 skrll /* 444 1.1.1.1.2.2 skrll * These fields must be ASCII: OemId, OemTableId, AslCompilerId. 445 1.1.1.1.2.2 skrll * We allow a NULL terminator in OemId and OemTableId. 446 1.1.1.1.2.2 skrll */ 447 1.1.1.1.2.2 skrll for (i = 0; i < ACPI_NAME_SIZE; i++) 448 1.1.1.1.2.2 skrll { 449 1.1.1.1.2.2 skrll if (!ACPI_IS_ASCII ((UINT8) TableHeader.AslCompilerId[i])) 450 1.1.1.1.2.2 skrll { 451 1.1.1.1.2.2 skrll goto BadCharacters; 452 1.1.1.1.2.2 skrll } 453 1.1.1.1.2.2 skrll } 454 1.1.1.1.2.2 skrll 455 1.1.1.1.2.2 skrll for (i = 0; (i < ACPI_OEM_ID_SIZE) && (TableHeader.OemId[i]); i++) 456 1.1.1.1.2.2 skrll { 457 1.1.1.1.2.2 skrll if (!ACPI_IS_ASCII ((UINT8) TableHeader.OemId[i])) 458 1.1.1.1.2.2 skrll { 459 1.1.1.1.2.2 skrll goto BadCharacters; 460 1.1.1.1.2.2 skrll } 461 1.1.1.1.2.2 skrll } 462 1.1.1.1.2.2 skrll 463 1.1.1.1.2.2 skrll for (i = 0; (i < ACPI_OEM_TABLE_ID_SIZE) && (TableHeader.OemTableId[i]); i++) 464 1.1.1.1.2.2 skrll { 465 1.1.1.1.2.2 skrll if (!ACPI_IS_ASCII ((UINT8) TableHeader.OemTableId[i])) 466 1.1.1.1.2.2 skrll { 467 1.1.1.1.2.2 skrll goto BadCharacters; 468 1.1.1.1.2.2 skrll } 469 1.1.1.1.2.2 skrll } 470 1.1.1.1.2.2 skrll 471 1.1.1.1.2.2 skrll return (AE_OK); 472 1.1.1.1.2.2 skrll 473 1.1.1.1.2.2 skrll 474 1.1.1.1.2.2 skrll BadCharacters: 475 1.1.1.1.2.2 skrll 476 1.1.1.1.2.2 skrll ACPI_WARNING ((AE_INFO, 477 1.1.1.1.2.2 skrll "Table header for [%4.4s] has invalid ASCII character(s)", 478 1.1.1.1.2.2 skrll TableHeader.Signature)); 479 1.1.1.1.2.2 skrll return (AE_OK); 480 1.1.1.1.2.2 skrll } 481 1.1.1.1.2.2 skrll 482 1.1.1.1.2.2 skrll 483 1.1.1.1.2.2 skrll /******************************************************************************* 484 1.1.1.1.2.2 skrll * 485 1.1.1.1.2.2 skrll * FUNCTION: AcCheckTextModeCorruption 486 1.1.1.1.2.2 skrll * 487 1.1.1.1.2.2 skrll * PARAMETERS: Table - Table buffer starting with table header 488 1.1.1.1.2.2 skrll * 489 1.1.1.1.2.2 skrll * RETURN: Status 490 1.1.1.1.2.2 skrll * 491 1.1.1.1.2.2 skrll * DESCRIPTION: Check table for text mode file corruption where all linefeed 492 1.1.1.1.2.2 skrll * characters (LF) have been replaced by carriage return linefeed 493 1.1.1.1.2.2 skrll * pairs (CR/LF). 494 1.1.1.1.2.2 skrll * 495 1.1.1.1.2.2 skrll ******************************************************************************/ 496 1.1.1.1.2.2 skrll 497 1.1.1.1.2.2 skrll static ACPI_STATUS 498 1.1.1.1.2.2 skrll AcCheckTextModeCorruption ( 499 1.1.1.1.2.2 skrll ACPI_TABLE_HEADER *Table) 500 1.1.1.1.2.2 skrll { 501 1.1.1.1.2.2 skrll UINT32 i; 502 1.1.1.1.2.2 skrll UINT32 Pairs = 0; 503 1.1.1.1.2.2 skrll UINT8 *Buffer = ACPI_CAST_PTR (UINT8, Table); 504 1.1.1.1.2.2 skrll 505 1.1.1.1.2.2 skrll 506 1.1.1.1.2.2 skrll /* Scan entire table to determine if each LF has been prefixed with a CR */ 507 1.1.1.1.2.2 skrll 508 1.1.1.1.2.2 skrll for (i = 1; i < Table->Length; i++) 509 1.1.1.1.2.2 skrll { 510 1.1.1.1.2.2 skrll if (Buffer[i] == 0x0A) 511 1.1.1.1.2.2 skrll { 512 1.1.1.1.2.2 skrll if (Buffer[i - 1] != 0x0D) 513 1.1.1.1.2.2 skrll { 514 1.1.1.1.2.2 skrll /* The LF does not have a preceding CR, table not corrupted */ 515 1.1.1.1.2.2 skrll 516 1.1.1.1.2.2 skrll return (AE_OK); 517 1.1.1.1.2.2 skrll } 518 1.1.1.1.2.2 skrll else 519 1.1.1.1.2.2 skrll { 520 1.1.1.1.2.2 skrll /* Found a CR/LF pair */ 521 1.1.1.1.2.2 skrll 522 1.1.1.1.2.2 skrll Pairs++; 523 1.1.1.1.2.2 skrll } 524 1.1.1.1.2.2 skrll 525 1.1.1.1.2.2 skrll i++; 526 1.1.1.1.2.2 skrll } 527 1.1.1.1.2.2 skrll } 528 1.1.1.1.2.2 skrll 529 1.1.1.1.2.2 skrll if (!Pairs) 530 1.1.1.1.2.2 skrll { 531 1.1.1.1.2.2 skrll return (AE_OK); 532 1.1.1.1.2.2 skrll } 533 1.1.1.1.2.2 skrll 534 1.1.1.1.2.2 skrll /* 535 1.1.1.1.2.2 skrll * Entire table scanned, each CR is part of a CR/LF pair -- 536 1.1.1.1.2.2 skrll * meaning that the table was treated as a text file somewhere. 537 1.1.1.1.2.2 skrll * 538 1.1.1.1.2.2 skrll * NOTE: We can't "fix" the table, because any existing CR/LF pairs in the 539 1.1.1.1.2.2 skrll * original table are left untouched by the text conversion process -- 540 1.1.1.1.2.2 skrll * meaning that we cannot simply replace CR/LF pairs with LFs. 541 1.1.1.1.2.2 skrll */ 542 1.1.1.1.2.2 skrll AcpiOsPrintf ("Table has been corrupted by text mode conversion\n"); 543 1.1.1.1.2.2 skrll AcpiOsPrintf ("All LFs (%u) were changed to CR/LF pairs\n", Pairs); 544 1.1.1.1.2.2 skrll AcpiOsPrintf ("Table cannot be repaired!\n"); 545 1.1.1.1.2.2 skrll 546 1.1.1.1.2.2 skrll return (AE_BAD_VALUE); 547 1.1.1.1.2.2 skrll } 548
Indexes created Fri Oct 17 03:10:13 GMT 2025