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bionic: make epoll_event structure packed

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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>
This commit is contained in:
Philip Hatcher
2014-02-25 14:16:37 +01:00
committed by Elliott Hughes
parent 4356adc3f4
commit 9ded07cff6
2 changed files with 34 additions and 1 deletions
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6
libc/include/sys/epoll.h
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@@ -67,7 +67,11 @@ typedef union epoll_data {
struct epoll_event {
uint32_t events;
epoll_data_t data;
};
}
#ifdef __x86_64__
__packed
#endif
;
int epoll_create(int);
int epoll_create1(int);