include/uapi/linux/timerfd.h

   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 */