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/*
* include/common/epoll.h
* epoll definitions for older libc.
*
* Copyright (C) 2000-2012 Willy Tarreau - w@1wt.eu
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* Those constants were found both in glibc and in the Linux kernel.
* They are provided here because the epoll() syscall is featured in
* some kernels but in not often included in the glibc, so it needs
* just a basic definition.
*/
#ifndef _COMMON_EPOLL_H
#define _COMMON_EPOLL_H
#if defined (__linux__) && defined(ENABLE_EPOLL)
#ifndef USE_MY_EPOLL
#include <sys/epoll.h>
#else
#include <errno.h>
#include <sys/types.h>
#include <linux/unistd.h>
#include <sys/syscall.h>
#include <common/config.h>
#include <common/syscall.h>
/* epoll_ctl() commands */
#ifndef EPOLL_CTL_ADD
#define EPOLL_CTL_ADD 1
#define EPOLL_CTL_DEL 2
#define EPOLL_CTL_MOD 3
#endif
/* events types (bit fields) */
#ifndef EPOLLIN
#define EPOLLIN 1
#define EPOLLPRI 2
#define EPOLLOUT 4
#define EPOLLERR 8
#define EPOLLHUP 16
#define EPOLLONESHOT (1 << 30)
#define EPOLLET (1 << 31)
#endif
struct epoll_event {
uint32_t events;
union {
void *ptr;
int fd;
uint32_t u32;
uint64_t u64;
} data;
};
#if defined(CONFIG_HAP_LINUX_VSYSCALL) && defined(__linux__) && defined(__i386__)
/* Those are our self-defined functions */
extern int epoll_create(int size);
extern int epoll_ctl(int epfd, int op, int fd, struct epoll_event * event);
extern int epoll_wait(int epfd, struct epoll_event * events, int maxevents, int timeout);
#else
/* We'll define a syscall, so for this we need __NR_splice. It should have
* been provided by syscall.h.
*/
#if !defined(__NR_epoll_ctl)
#warning unsupported architecture, guessing __NR_epoll_create=254 like x86...
#define __NR_epoll_create 254
#define __NR_epoll_ctl 255
#define __NR_epoll_wait 256
#endif /* __NR_epoll_ctl */
static inline _syscall1 (int, epoll_create, int, size);
static inline _syscall4 (int, epoll_ctl, int, epfd, int, op, int, fd, struct epoll_event *, event);
static inline _syscall4 (int, epoll_wait, int, epfd, struct epoll_event *, events, int, maxevents, int, timeout);
#endif /* VSYSCALL */
#endif /* USE_MY_EPOLL */
#endif /* __linux__ && ENABLE_EPOLL */
#endif /* _COMMON_EPOLL_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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