| Nick Terrell | 73f3d1b | 2017-08-09 19:35:53 -0700 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (c) 2016-present, Yann Collet, Facebook, Inc. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This source code is licensed under the BSD-style license found in the |
| 6 | * LICENSE file in the root directory of https://github.com/facebook/zstd. |
| 7 | * An additional grant of patent rights can be found in the PATENTS file in the |
| 8 | * same directory. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it under |
| 11 | * the terms of the GNU General Public License version 2 as published by the |
| 12 | * Free Software Foundation. This program is dual-licensed; you may select |
| 13 | * either version 2 of the GNU General Public License ("GPL") or BSD license |
| 14 | * ("BSD"). |
| 15 | */ |
| 16 | |
| 17 | /* Note : this module is expected to remain private, do not expose it */ |
| 18 | |
| 19 | #ifndef ERROR_H_MODULE |
| 20 | #define ERROR_H_MODULE |
| 21 | |
| 22 | /* **************************************** |
| 23 | * Dependencies |
| 24 | ******************************************/ |
| 25 | #include <linux/types.h> /* size_t */ |
| 26 | #include <linux/zstd.h> /* enum list */ |
| 27 | |
| 28 | /* **************************************** |
| 29 | * Compiler-specific |
| 30 | ******************************************/ |
| 31 | #define ERR_STATIC static __attribute__((unused)) |
| 32 | |
| 33 | /*-**************************************** |
| 34 | * Customization (error_public.h) |
| 35 | ******************************************/ |
| 36 | typedef ZSTD_ErrorCode ERR_enum; |
| 37 | #define PREFIX(name) ZSTD_error_##name |
| 38 | |
| 39 | /*-**************************************** |
| 40 | * Error codes handling |
| 41 | ******************************************/ |
| 42 | #define ERROR(name) ((size_t)-PREFIX(name)) |
| 43 | |
| 44 | ERR_STATIC unsigned ERR_isError(size_t code) { return (code > ERROR(maxCode)); } |
| 45 | |
| 46 | ERR_STATIC ERR_enum ERR_getErrorCode(size_t code) |
| 47 | { |
| 48 | if (!ERR_isError(code)) |
| 49 | return (ERR_enum)0; |
| 50 | return (ERR_enum)(0 - code); |
| 51 | } |
| 52 | |
| 53 | #endif /* ERROR_H_MODULE */ |