9ded07cff6
Description: In the kernel the epoll_event structure is packed in 64 bit kernel builds to allow the structure to be more easily compatible with 32 bit user space. As a result, when user space is 64-bit the structure must be packed as well. Add unit test to show the ptr alignment issue. Change-Id: I2c4848d5e38a357219091f350f9b6e3da05090da Signed-off-by: Philip Hatcher <philip.hatcher@intel.com> Signed-off-by: Fengwei Yin <fengwei.yin@intel.com> Reviewed-by: Hazarika, Prodyut <prodyut.hazarika@intel.com> Tested-by: Hazarika, Prodyut <prodyut.hazarika@intel.com>
85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _SYS_EPOLL_H_
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#define _SYS_EPOLL_H_
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <fcntl.h> /* For O_CLOEXEC. */
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#include <signal.h> /* For sigset_t. */
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__BEGIN_DECLS
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#define EPOLLIN 0x00000001
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#define EPOLLPRI 0x00000002
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#define EPOLLOUT 0x00000004
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#define EPOLLERR 0x00000008
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#define EPOLLHUP 0x00000010
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#define EPOLLRDNORM 0x00000040
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#define EPOLLRDBAND 0x00000080
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#define EPOLLWRNORM 0x00000100
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#define EPOLLWRBAND 0x00000200
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#define EPOLLMSG 0x00000400
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#define EPOLLRDHUP 0x00002000
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#define EPOLLWAKEUP 0x20000000
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#define EPOLLONESHOT 0x40000000
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#define EPOLLET 0x80000000
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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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#define EPOLL_CLOEXEC O_CLOEXEC
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typedef union epoll_data {
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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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} epoll_data_t;
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struct epoll_event {
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uint32_t events;
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epoll_data_t data;
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}
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#ifdef __x86_64__
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__packed
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#endif
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;
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int epoll_create(int);
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int epoll_create1(int);
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int epoll_ctl(int, int, int, struct epoll_event*);
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int epoll_wait(int, struct epoll_event*, int, int);
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int epoll_pwait(int, struct epoll_event*, int, int, const sigset_t*);
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__END_DECLS
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#endif /* _SYS_EPOLL_H_ */
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