1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * include/linux/timerfd.h 4 * 5 * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org> 6 * 7 */ 8 9 #ifndef _UAPI_LINUX_TIMERFD_H 10 #define _UAPI_LINUX_TIMERFD_H 11 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 defining 22 * new flags, since they might collide with O_* ones. We want 23 * to re-use O_* flags that couldn't possibly have a meaning 24 * from eventfd, in order to leave a free define-space for 25 * shared O_* flags. 26 * 27 * Also make sure to update the masks in include/linux/timerfd.h 28 * 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_CLOEXEC 33 #define TFD_NONBLOCK O_NONBLOCK 34 35 #define TFD_IOC_SET_TICKS _IOW('T', 0, __u64) 36 37 #endif /* _UAPI_LINUX_TIMERFD_H */ 38