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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * include/linux/timerfd.h4 *5 * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>6 *7 */8 9#ifndef _UAPI_LINUX_TIMERFD_H10#define _UAPI_LINUX_TIMERFD_H11 12#include <linux/types.h>13 14/* For O_CLOEXEC and O_NONBLOCK */15#include <linux/fcntl.h>16 17/* For _IO helpers */18#include <linux/ioctl.h>19 20/*21 * CAREFUL: Check include/asm-generic/fcntl.h when defining22 * new flags, since they might collide with O_* ones. We want23 * to re-use O_* flags that couldn't possibly have a meaning24 * from eventfd, in order to leave a free define-space for25 * shared O_* flags.26 *27 * Also make sure to update the masks in include/linux/timerfd.h28 * when adding new flags.29 */30#define TFD_TIMER_ABSTIME (1 << 0)31#define TFD_TIMER_CANCEL_ON_SET (1 << 1)32#define TFD_CLOEXEC O_CLOEXEC33#define TFD_NONBLOCK O_NONBLOCK34 35#define TFD_IOC_SET_TICKS _IOW('T', 0, __u64)36 37#endif /* _UAPI_LINUX_TIMERFD_H */38