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