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 #include <sys/shm.h>
30
31 #include <sys/syscall.h>
32 #include <unistd.h>
33
shmat(int id,const void * address,int flags)34 void* shmat(int id, const void* address, int flags) {
35 return reinterpret_cast<void*>(syscall(SYS_shmat, id, address, flags));
36 }
37
shmctl(int id,int cmd,struct shmid_ds * buf)38 int shmctl(int id, int cmd, struct shmid_ds* buf) {
39 #if !defined(__LP64__)
40 // Annoyingly, the kernel requires this for 32-bit but rejects it for 64-bit.
41 cmd |= IPC_64;
42 #endif
43 return syscall(SYS_shmctl, id, cmd, buf);
44 }
45
shmdt(const void * address)46 int shmdt(const void* address) {
47 return syscall(SYS_shmdt, address);
48 }
49
shmget(key_t key,size_t size,int flags)50 int shmget(key_t key, size_t size, int flags) {
51 return syscall(SYS_shmget, key, size, flags);
52 }
53