diff options
Diffstat (limited to 'include/uapi/linux/eventpoll.h')
| -rw-r--r-- | include/uapi/linux/eventpoll.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/uapi/linux/eventpoll.h b/include/uapi/linux/eventpoll.h new file mode 100644 index 00000000000..8c99ce7202c --- /dev/null +++ b/include/uapi/linux/eventpoll.h @@ -0,0 +1,66 @@ +/* + * 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 +#define EPOLL_CTL_DISABLE 4 + +/* + * 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 (1 << 29) + +/* Set the One Shot behaviour for the target file descriptor */ +#define EPOLLONESHOT (1 << 30) + +/* Set the Edge Triggered behaviour for the target file descriptor */ +#define EPOLLET (1 << 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 { + __u32 events; + __u64 data; +} EPOLL_PACKED; + + +#endif /* _UAPI_LINUX_EVENTPOLL_H */ |