0d1a8a5b0b
This reverts commit 4dbe8fc22f.
The angler/bullhead builds are now dead, so this can go in.
Bug: https://issuetracker.google.com/74404306
Change-Id: I130cdcd6375b6125cb8a1e63a4a540b0dbe41ceb
61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
/*
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* Copyright (C) 2016 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _BITS_IOCTL_H_
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#define _BITS_IOCTL_H_
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int ioctl(int __fd, int __request, ...);
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/*
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* Work around unsigned -> signed conversion warnings: many common ioctl
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* constants are unsigned.
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*
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* Since this workaround introduces an overload to ioctl, it's possible that it
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* will break existing code that takes the address of ioctl. If such a breakage
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* occurs, you can work around it by either:
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* - specifying a concrete, correct type for ioctl (whether it be through a cast
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* in `(int (*)(int, int, ...))ioctl`, creating a temporary variable with the
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* type of the ioctl you prefer, ...), or
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* - defining BIONIC_IOCTL_NO_SIGNEDNESS_OVERLOAD, which will make the
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* overloading go away.
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*
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* FIXME: __has_extension is more or less a clang version check. Remove it when
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* we don't need to support old clang code.
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*/
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#if __has_extension(overloadable_unmarked) && !defined(BIONIC_IOCTL_NO_SIGNEDNESS_OVERLOAD)
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/* enable_if(1) just exists to break overloading ties. */
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int ioctl(int __fd, unsigned __request, ...) __overloadable __enable_if(1, "") __RENAME(ioctl);
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#endif
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__END_DECLS
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#endif
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