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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note *//* * include/linux/eventpoll.h ( Efficient event polling implementation ) * Copyright (C) 2001,...,2006 Davide Libenzi * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * Davide Libenzi <davidel@xmailserver.org> * */
#ifndef _UAPI_LINUX_EVENTPOLL_H#define _UAPI_LINUX_EVENTPOLL_H
/* For O_CLOEXEC */#include <linux/fcntl.h>#include <linux/types.h>
/* Flags for epoll_create1. */#define EPOLL_CLOEXEC O_CLOEXEC
/* Valid opcodes to issue to sys_epoll_ctl() */#define EPOLL_CTL_ADD 1#define EPOLL_CTL_DEL 2#define EPOLL_CTL_MOD 3
/* Epoll event masks */#define EPOLLIN (__force __poll_t)0x00000001#define EPOLLPRI (__force __poll_t)0x00000002#define EPOLLOUT (__force __poll_t)0x00000004#define EPOLLERR (__force __poll_t)0x00000008#define EPOLLHUP (__force __poll_t)0x00000010#define EPOLLNVAL (__force __poll_t)0x00000020#define EPOLLRDNORM (__force __poll_t)0x00000040#define EPOLLRDBAND (__force __poll_t)0x00000080#define EPOLLWRNORM (__force __poll_t)0x00000100#define EPOLLWRBAND (__force __poll_t)0x00000200#define EPOLLMSG (__force __poll_t)0x00000400#define EPOLLRDHUP (__force __poll_t)0x00002000
/* * Internal flag - wakeup generated by io_uring, used to detect recursion back * into the io_uring poll handler. */#define EPOLL_URING_WAKE ((__force __poll_t)(1U << 27))
/* Set exclusive wakeup mode for the target file descriptor */#define EPOLLEXCLUSIVE ((__force __poll_t)(1U << 28))
/* * Request the handling of system wakeup events so as to prevent system suspends * from happening while those events are being processed. * * Assuming neither EPOLLET nor EPOLLONESHOT is set, system suspends will not be * re-allowed until epoll_wait is called again after consuming the wakeup * event(s). * * Requires CAP_BLOCK_SUSPEND */#define EPOLLWAKEUP ((__force __poll_t)(1U << 29))
/* Set the One Shot behaviour for the target file descriptor */#define EPOLLONESHOT ((__force __poll_t)(1U << 30))
/* Set the Edge Triggered behaviour for the target file descriptor */#define EPOLLET ((__force __poll_t)(1U << 31))
/* * On x86-64 make the 64bit structure have the same alignment as the * 32bit structure. This makes 32bit emulation easier. * * UML/x86_64 needs the same packing as x86_64 */#ifdef __x86_64__#define EPOLL_PACKED __attribute__((packed))#else#define EPOLL_PACKED#endif
struct epoll_event { __poll_t events; __u64 data;} EPOLL_PACKED;
struct epoll_params { __u32 busy_poll_usecs; __u16 busy_poll_budget; __u8 prefer_busy_poll;
/* pad the struct to a multiple of 64bits */ __u8 __pad;};
#define EPOLL_IOC_TYPE 0x8A#define EPIOCSPARAMS _IOW(EPOLL_IOC_TYPE, 0x01, struct epoll_params)#define EPIOCGPARAMS _IOR(EPOLL_IOC_TYPE, 0x02, struct epoll_params)
#endif /* _UAPI_LINUX_EVENTPOLL_H */