platform_bionic/libc/include/errno.h
Elliott Hughes 462e90cf4d Start documenting libc.
Bug: N/A
Test: N/A
Change-Id: I17345cb72a5ffc3af1688cf5874589cfb1e1fea0
2018-08-23 11:03:17 -07:00

62 lines
2 KiB
C

/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 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 MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, 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 DAMAGE.
*/
#pragma once
/**
* @file errno.h
* @brief Standard C error handling.
*/
#include <sys/cdefs.h>
#include <linux/errno.h>
__BEGIN_DECLS
#ifndef ENOTSUP
/** On Linux, ENOTSUP and EOPNOTSUPP are the same despite POSIX saying they should be distinct. */
#define ENOTSUP EOPNOTSUPP
#endif
/**
* Returns the address of the calling thread's `errno` storage.
* Non-portable and should not be used directly. Use `errno` instead.
*
* @private
*/
int* __errno(void) __attribute_const__;
/**
* [errno(3)](http://man7.org/linux/man-pages/man3/errno.3.html) is the last error on the calling
* thread.
*/
#define errno (*__errno())
__END_DECLS
#include <android/legacy_errno_inlines.h>