1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 /** 32 * @file errno.h 33 * @brief Standard C error handling. 34 */ 35 36 #include <sys/cdefs.h> 37 #include <linux/errno.h> 38 39 __BEGIN_DECLS 40 41 #ifndef ENOTSUP 42 /** On Linux, ENOTSUP and EOPNOTSUPP are the same despite POSIX saying they should be distinct. */ 43 #define ENOTSUP EOPNOTSUPP 44 #endif 45 46 /** 47 * Returns the address of the calling thread's `errno` storage. 48 * Non-portable and should not be used directly. Use `errno` instead. 49 * 50 * @private 51 */ 52 int* _Nonnull __errno(void) __attribute_const__; 53 54 /** 55 * [errno(3)](http://man7.org/linux/man-pages/man3/errno.3.html) is the last error on the calling 56 * thread. 57 */ 58 #define errno (*__errno()) 59 60 __END_DECLS 61