platform_bionic/libc/include/sys/sem.h
Elliott Hughes 497ad30d7d Make union semun usable.
This is a bit bogus because it's been removed from glibc (though not
thoroughly) and is never useful on Android (because the system calls
in question are compiled out of Android kernels, and SELinux would
disallow them even if you weren't running an Android kernel). This
also means that on glibc you need to include <linux/sem.h> for this
and on bionic you need <sys/sem.h> (and for either if you #include
the other file, you won't get this union).

Bug: https://github.com/android-ndk/ndk/issues/400
Test: added new test
Change-Id: I47f721da77515531f616d6ad8479bfbc9b60ee47
2017-05-18 15:05:26 -07:00

64 lines
2 KiB
C

/*
* Copyright (C) 2014 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _SYS_SEM_H_
#define _SYS_SEM_H_
#include <sys/cdefs.h>
#include <sys/ipc.h>
#include <sys/types.h>
#if defined(__USE_GNU)
#include <bits/timespec.h>
#endif
#include <linux/sem.h>
__BEGIN_DECLS
#define semid_ds semid64_ds
union semun {
int val;
struct semid_ds* buf;
unsigned short* array;
struct seminfo* __buf;
void* __pad;
};
int semctl(int, int, int, ...) __INTRODUCED_IN(26);
int semget(key_t, int, int) __INTRODUCED_IN(26);
int semop(int, struct sembuf*, size_t) __INTRODUCED_IN(26);
#if defined(__USE_GNU)
int semtimedop(int, struct sembuf*, size_t, const struct timespec*) __INTRODUCED_IN(26);
#endif
__END_DECLS
#endif