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| Rev | Author | Line No. | Line |
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| 6595 | serge | 1 | /****************************************************************************** |
| 2 | * |
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| 3 | * Module Name: utuuid -- UUID support functions |
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| 4 | * |
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| 5 | *****************************************************************************/ |
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| 6 | |||
| 7 | /* |
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| 8 | * Copyright (C) 2000 - 2015, Intel Corp. |
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| 9 | * All rights reserved. |
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| 10 | * |
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| 11 | * Redistribution and use in source and binary forms, with or without |
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| 12 | * modification, are permitted provided that the following conditions |
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| 13 | * are met: |
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| 14 | * 1. Redistributions of source code must retain the above copyright |
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| 15 | * notice, this list of conditions, and the following disclaimer, |
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| 16 | * without modification. |
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| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
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| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
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| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
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| 20 | * including a substantially similar Disclaimer requirement for further |
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| 21 | * binary redistribution. |
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| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
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| 23 | * of any contributors may be used to endorse or promote products derived |
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| 24 | * from this software without specific prior written permission. |
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| 25 | * |
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| 26 | * Alternatively, this software may be distributed under the terms of the |
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| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
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| 28 | * Software Foundation. |
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| 29 | * |
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| 30 | * NO WARRANTY |
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| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
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| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 41 | * POSSIBILITY OF SUCH DAMAGES. |
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| 42 | */ |
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| 43 | |||
| 44 | #include |
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| 45 | #include "accommon.h" |
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| 46 | |||
| 47 | #define _COMPONENT ACPI_COMPILER |
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| 48 | ACPI_MODULE_NAME("utuuid") |
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| 49 | |||
| 50 | #if (defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP || defined ACPI_HELP_APP) |
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| 51 | /* |
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| 52 | * UUID support functions. |
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| 53 | * |
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| 54 | * This table is used to convert an input UUID ascii string to a 16 byte |
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| 55 | * buffer and the reverse. The table maps a UUID buffer index 0-15 to |
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| 56 | * the index within the 36-byte UUID string where the associated 2-byte |
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| 57 | * hex value can be found. |
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| 58 | * |
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| 59 | * 36-byte UUID strings are of the form: |
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| 60 | * aabbccdd-eeff-gghh-iijj-kkllmmnnoopp |
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| 61 | * Where aa-pp are one byte hex numbers, made up of two hex digits |
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| 62 | * |
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| 63 | * Note: This table is basically the inverse of the string-to-offset table |
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| 64 | * found in the ACPI spec in the description of the to_UUID macro. |
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| 65 | */ |
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| 66 | const u8 acpi_gbl_map_to_uuid_offset[UUID_BUFFER_LENGTH] = { |
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| 67 | 6, 4, 2, 0, 11, 9, 16, 14, 19, 21, 24, 26, 28, 30, 32, 34 |
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| 68 | }; |
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| 69 | |||
| 70 | /******************************************************************************* |
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| 71 | * |
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| 72 | * FUNCTION: acpi_ut_convert_string_to_uuid |
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| 73 | * |
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| 74 | * PARAMETERS: in_string - 36-byte formatted UUID string |
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| 75 | * uuid_buffer - Where the 16-byte UUID buffer is returned |
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| 76 | * |
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| 77 | * RETURN: None. Output data is returned in the uuid_buffer |
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| 78 | * |
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| 79 | * DESCRIPTION: Convert a 36-byte formatted UUID string to 16-byte UUID buffer |
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| 80 | * |
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| 81 | ******************************************************************************/ |
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| 82 | |||
| 83 | void acpi_ut_convert_string_to_uuid(char *in_string, u8 *uuid_buffer) |
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| 84 | { |
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| 85 | u32 i; |
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| 86 | |||
| 87 | for (i = 0; i < UUID_BUFFER_LENGTH; i++) { |
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| 88 | uuid_buffer[i] = |
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| 89 | (acpi_ut_ascii_char_to_hex |
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| 90 | (in_string[acpi_gbl_map_to_uuid_offset[i]]) << 4); |
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| 91 | |||
| 92 | uuid_buffer[i] |= |
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| 93 | acpi_ut_ascii_char_to_hex(in_string |
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| 94 | [acpi_gbl_map_to_uuid_offset[i] + |
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| 95 | 1]); |
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| 96 | } |
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| 97 | } |
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| 98 | #endif |