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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *  * Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  *  * Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in
     12  *    the documentation and/or other materials provided with the
     13  *    distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
     22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #pragma once
     30 
     31 /**
     32  * @file sys/shm.h
     33  * @brief System V shared memory. Not useful on Android because it's disallowed by SELinux.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #include <sys/ipc.h>
     38 #include <sys/types.h>
     39 
     40 #include <linux/shm.h>
     41 
     42 #define shmid_ds shmid64_ds
     43 #define SHMLBA 4096
     44 
     45 __BEGIN_DECLS
     46 
     47 typedef unsigned long shmatt_t;
     48 
     49 /** Not useful on Android; disallowed by SELinux. */
     50 void* shmat(int __shm_id, const void* __addr, int __flags) __INTRODUCED_IN(26);
     51 /** Not useful on Android; disallowed by SELinux. */
     52 int shmctl(int __shm_id, int __cmd, struct shmid_ds* __buf) __INTRODUCED_IN(26);
     53 /** Not useful on Android; disallowed by SELinux. */
     54 int shmdt(const void* __addr) __INTRODUCED_IN(26);
     55 /** Not useful on Android; disallowed by SELinux. */
     56 int shmget(key_t __key, size_t __size, int __flags) __INTRODUCED_IN(26);
     57 
     58 __END_DECLS
     59