cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / linux / eventpoll.h

diff --git a/i686-linux-gnu-4.7/usr/include/linux/eventpoll.h b/i686-linux-gnu-4.7/usr/include/linux/eventpoll.h
new file mode 100644 (file)
index 0000000..27fff48
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/linux/eventpoll.h
@@ -0,0 +1,94 @@
+/* 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 _LINUX_EVENTPOLL_H
+#define _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                (__poll_t)0x00000001
+#define EPOLLPRI       (__poll_t)0x00000002
+#define EPOLLOUT       (__poll_t)0x00000004
+#define EPOLLERR       (__poll_t)0x00000008
+#define EPOLLHUP       (__poll_t)0x00000010
+#define EPOLLNVAL      (__poll_t)0x00000020
+#define EPOLLRDNORM    (__poll_t)0x00000040
+#define EPOLLRDBAND    (__poll_t)0x00000080
+#define EPOLLWRNORM    (__poll_t)0x00000100
+#define EPOLLWRBAND    (__poll_t)0x00000200
+#define EPOLLMSG       (__poll_t)0x00000400
+#define EPOLLRDHUP     (__poll_t)0x00002000
+
+/* Set exclusive wakeup mode for the target file descriptor */
+#define EPOLLEXCLUSIVE ((__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    ((__poll_t)(1U << 29))
+
+/* Set the One Shot behaviour for the target file descriptor */
+#define EPOLLONESHOT   ((__poll_t)(1U << 30))
+
+/* Set the Edge Triggered behaviour for the target file descriptor */
+#define EPOLLET                ((__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;
+
+#ifdef CONFIG_PM_SLEEP
+static __inline__ void ep_take_care_of_epollwakeup(struct epoll_event *epev)
+{
+       if ((epev->events & EPOLLWAKEUP) && !capable(CAP_BLOCK_SUSPEND))
+               epev->events &= ~EPOLLWAKEUP;
+}
+#else
+static __inline__ void ep_take_care_of_epollwakeup(struct epoll_event *epev)
+{
+       epev->events &= ~EPOLLWAKEUP;
+}
+#endif
+#endif /* _LINUX_EVENTPOLL_H */