45cd74cb50
When importing the latest copy of the kernel headers into Bionic,
Christpher and Elliott noticed that the eventpoll.h casts were not
wrapped in (). As it is, clang complains about macros without
surrounding (), so this makes it a pain for userspace tools.
So fix it up by adding another () pair, and make them line up purty by
using tabs.
Fixes: 65aaf87b3a ("add EPOLLNVAL, annotate EPOLL... and event_poll->event")
Reported-by: Christopher Ferris <cferris@google.com>
Reported-by: Elliott Hughes <enh@google.com>
Cc: stable <stable@vger.kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/*
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* include/linux/eventpoll.h ( Efficient event polling implementation )
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* Copyright (C) 2001,...,2006 Davide Libenzi
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Davide Libenzi <davidel@xmailserver.org>
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*
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*/
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#ifndef _UAPI_LINUX_EVENTPOLL_H
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#define _UAPI_LINUX_EVENTPOLL_H
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/* For O_CLOEXEC */
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#include <linux/fcntl.h>
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#include <linux/types.h>
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/* Flags for epoll_create1. */
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#define EPOLL_CLOEXEC O_CLOEXEC
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/* Valid opcodes to issue to sys_epoll_ctl() */
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#define EPOLL_CTL_ADD 1
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#define EPOLL_CTL_DEL 2
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#define EPOLL_CTL_MOD 3
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/* Epoll event masks */
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#define EPOLLIN (__force __poll_t)0x00000001
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#define EPOLLPRI (__force __poll_t)0x00000002
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#define EPOLLOUT (__force __poll_t)0x00000004
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#define EPOLLERR (__force __poll_t)0x00000008
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#define EPOLLHUP (__force __poll_t)0x00000010
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#define EPOLLNVAL (__force __poll_t)0x00000020
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#define EPOLLRDNORM (__force __poll_t)0x00000040
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#define EPOLLRDBAND (__force __poll_t)0x00000080
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#define EPOLLWRNORM (__force __poll_t)0x00000100
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#define EPOLLWRBAND (__force __poll_t)0x00000200
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#define EPOLLMSG (__force __poll_t)0x00000400
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#define EPOLLRDHUP (__force __poll_t)0x00002000
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/* Set exclusive wakeup mode for the target file descriptor */
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#define EPOLLEXCLUSIVE ((__force __poll_t)(1U << 28))
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/*
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* Request the handling of system wakeup events so as to prevent system suspends
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* from happening while those events are being processed.
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*
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* Assuming neither EPOLLET nor EPOLLONESHOT is set, system suspends will not be
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* re-allowed until epoll_wait is called again after consuming the wakeup
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* event(s).
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*
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* Requires CAP_BLOCK_SUSPEND
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*/
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#define EPOLLWAKEUP ((__force __poll_t)(1U << 29))
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/* Set the One Shot behaviour for the target file descriptor */
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#define EPOLLONESHOT ((__force __poll_t)(1U << 30))
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/* Set the Edge Triggered behaviour for the target file descriptor */
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#define EPOLLET ((__force __poll_t)(1U << 31))
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/*
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* On x86-64 make the 64bit structure have the same alignment as the
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* 32bit structure. This makes 32bit emulation easier.
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*
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* UML/x86_64 needs the same packing as x86_64
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*/
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#ifdef __x86_64__
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#define EPOLL_PACKED __attribute__((packed))
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#else
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#define EPOLL_PACKED
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#endif
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struct epoll_event {
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__poll_t events;
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__u64 data;
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} EPOLL_PACKED;
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#ifdef CONFIG_PM_SLEEP
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static inline void ep_take_care_of_epollwakeup(struct epoll_event *epev)
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{
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if ((epev->events & EPOLLWAKEUP) && !capable(CAP_BLOCK_SUSPEND))
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epev->events &= ~EPOLLWAKEUP;
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}
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#else
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static inline void ep_take_care_of_epollwakeup(struct epoll_event *epev)
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{
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epev->events &= ~EPOLLWAKEUP;
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}
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#endif
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#endif /* _UAPI_LINUX_EVENTPOLL_H */
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