Merge "Flesh out <sys/msg.h>, <sys/sem.h>, <sys/shm.h>."

libc/Android.bp

@@ -1350,6 +1350,9 @@ cc_library_static {
         "bionic/sync_file_range.cpp",
         "bionic/sysinfo.cpp",
         "bionic/syslog.cpp",
+        "bionic/sys_msg.cpp",
+        "bionic/sys_sem.cpp",
+        "bionic/sys_shm.cpp",
         "bionic/sys_siglist.c",
         "bionic/sys_signame.c",
         "bionic/sys_time.cpp",

libc/bionic/sys_msg.cpp

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include <sys/msg.h>
+
+#include <sys/syscall.h>
+#include <unistd.h>
+
+int msgctl(int id, int cmd, msqid_ds* buf) {
+#if !defined(__LP64__)
+  // Annoyingly, the kernel requires this for 32-bit but rejects it for 64-bit.
+  cmd |= IPC_64;
+#endif
+#if __i386__
+  return syscall(SYS_ipc, MSGCTL, id, cmd, 0, buf, 0);
+#else
+  return syscall(SYS_msgctl, id, cmd, buf);
+#endif
+}
+
+int msgget(key_t key, int flags) {
+#if __i386__
+  return syscall(SYS_ipc, MSGGET, key, flags, 0, 0, 0);
+#else
+  return syscall(SYS_msgget, key, flags);
+#endif
+}
+
+ssize_t msgrcv(int id, void* msg, size_t n, long type, int flags) {
+#if __i386__
+  return syscall(SYS_ipc, IPCCALL(1, MSGRCV), id, n, flags, msg, type);
+#else
+  return syscall(SYS_msgrcv, id, msg, n, type, flags);
+#endif
+}
+
+int msgsnd(int id, const void* msg, size_t n, int flags) {
+#if __i386__
+  return syscall(SYS_ipc, MSGSND, id, n, flags, msg, 0);
+#else
+  return syscall(SYS_msgsnd, id, msg, n, flags);
+#endif
+}

libc/bionic/sys_sem.cpp

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include <sys/sem.h>
+
+#include <stdarg.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+int semctl(int id, int num, int cmd, ...) {
+#if !defined(__LP64__)
+  // Annoyingly, the kernel requires this for 32-bit but rejects it for 64-bit.
+  cmd |= IPC_64;
+#endif
+  va_list ap;
+  va_start(ap, cmd);
+  semun arg = va_arg(ap, semun);
+  va_end(ap);
+#if __i386__
+  return syscall(SYS_ipc, SEMCTL, id, num, cmd, &arg, 0);
+#else
+  return syscall(SYS_semctl, id, num, cmd, arg);
+#endif
+}
+
+int semget(key_t key, int n, int flags) {
+#if __i386__
+  return syscall(SYS_ipc, SEMGET, key, n, flags, 0, 0);
+#else
+  return syscall(SYS_semget, key, n, flags);
+#endif
+}
+
+int semop(int id, sembuf* ops, size_t op_count) {
+  return semtimedop(id, ops, op_count, nullptr);
+}
+
+int semtimedop(int id, sembuf* ops, size_t op_count, const timespec* ts) {
+#if __i386__
+  return syscall(SYS_ipc, SEMTIMEDOP, id, op_count, 0, ops, ts);
+#else
+  return syscall(SYS_semtimedop, id, ops, op_count, ts);
+#endif
+}

libc/bionic/sys_shm.cpp

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include <sys/shm.h>
+
+#include <sys/syscall.h>
+#include <unistd.h>
+
+void* shmat(int id, const void* address, int flags) {
+#if __i386__
+  // See the kernel's ipc/syscall.c for the other side of this dance.
+  void* result = nullptr;
+  if (syscall(SYS_ipc, SHMAT, id, flags, &result, address, 0) == -1) {
+    return reinterpret_cast<void*>(-1);
+  }
+  return result;
+#else
+  return reinterpret_cast<void*>(syscall(SYS_shmat, id, address, flags));
+#endif
+}
+
+int shmctl(int id, int cmd, struct shmid_ds* buf) {
+#if !defined(__LP64__)
+  // Annoyingly, the kernel requires this for 32-bit but rejects it for 64-bit.
+  cmd |= IPC_64;
+#endif
+#if __i386__
+  return syscall(SYS_ipc, SHMCTL, id, cmd, 0, buf, 0);
+#else
+  return syscall(SYS_shmctl, id, cmd, buf);
+#endif
+}
+
+int shmdt(const void* address) {
+#if __i386__
+  return syscall(SYS_ipc, SHMDT, 0, 0, 0, address, 0);
+#else
+  return syscall(SYS_shmdt, address);
+#endif
+}
+
+int shmget(key_t key, size_t size, int flags) {
+#if __i386__
+  return syscall(SYS_ipc, SHMGET, key, size, flags, 0, 0);
+#else
+  return syscall(SYS_shmget, key, size, flags);
+#endif
+}

libc/include/sys/ipc.h

@@ -33,6 +33,8 @@
 #include <sys/types.h>
 #include <linux/ipc.h>
 
+#define ipc_perm ipc64_perm
+
 __BEGIN_DECLS
 
 key_t ftok(const char* path, int id);

libc/include/sys/msg.h

@@ -30,6 +30,22 @@
 #define _SYS_MSG_H_
 
 #include <sys/cdefs.h>
+#include <sys/ipc.h>
+
 #include <linux/msg.h>
 
+#define msqid_ds msqid64_ds
+
+__BEGIN_DECLS
+
+typedef __kernel_ulong_t msgqnum_t;
+typedef __kernel_ulong_t msglen_t;
+
+int msgctl(int, int, struct msqid_ds*) __INTRODUCED_IN_FUTURE;
+int msgget(key_t, int) __INTRODUCED_IN_FUTURE;
+ssize_t msgrcv(int, void*, size_t, long, int) __INTRODUCED_IN_FUTURE;
+int msgsnd(int, const void*, size_t, int) __INTRODUCED_IN_FUTURE;
+
+__END_DECLS
+
 #endif /* _SYS_MSG_H_ */

libc/include/sys/sem.h

@@ -30,6 +30,27 @@
 #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>
 
-#endif /* _SYS_SEM_H_ */
+#define semid_ds semid64_ds
+
+__BEGIN_DECLS
+
+int semctl(int, int, int, ...) __INTRODUCED_IN_FUTURE;
+int semget(key_t, int, int) __INTRODUCED_IN_FUTURE;
+int semop(int, struct sembuf*, size_t) __INTRODUCED_IN_FUTURE;
+
+#if defined(__USE_GNU)
+int semtimedop(int, struct sembuf*, size_t, const struct timespec*) __INTRODUCED_IN_FUTURE;
+#endif
+
+__END_DECLS
+
+#endif

libc/include/sys/shm.h

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2016 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_SHM_H_
+#define _SYS_SHM_H_
+
+#include <sys/cdefs.h>
+#include <sys/ipc.h>
+#include <sys/types.h>
+
+#include <linux/shm.h>
+
+#define shmid_ds shmid64_ds
+#define SHMLBA 4096
+
+__BEGIN_DECLS
+
+typedef unsigned long shmatt_t;
+
+void* shmat(int, const void*, int) __INTRODUCED_IN_FUTURE;
+int shmctl(int, int, struct shmid_ds*) __INTRODUCED_IN_FUTURE;
+int shmdt(const void*) __INTRODUCED_IN_FUTURE;
+int shmget(key_t, size_t, int) __INTRODUCED_IN_FUTURE;
+
+__END_DECLS
+
+#endif

libc/kernel/tools/defaults.py

@@ -59,6 +59,11 @@ kernel_token_replacements = {
     "ARG_MAX": "_KERNEL_ARG_MAX",
     # The kernel usage of __unused for unused struct fields conflicts with the macro defined in <sys/cdefs.h>.
     "__unused": "__linux_unused",
+    # The non-64 stuff is legacy; msqid64_ds/ipc64_perm is what userspace wants.
+    "msqid_ds": "__kernel_legacy_msqid_ds",
+    "semid_ds": "__kernel_legacy_semid_ds",
+    "shmid_ds": "__kernel_legacy_shmid_ds",
+    "ipc_perm": "__kernel_legacy_ipc_perm",
     # The kernel's _NSIG/NSIG are one less than the userspace value, so we need to move them aside.
     "_NSIG": "_KERNEL__NSIG",
     "NSIG": "_KERNEL_NSIG",

libc/kernel/uapi/linux/ipc.h

@@ -21,7 +21,7 @@
 #include <linux/types.h>
 #define IPC_PRIVATE ((__kernel_key_t) 0)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-struct ipc_perm {
+struct __kernel_legacy_ipc_perm {
   __kernel_key_t key;
   __kernel_uid_t uid;
   __kernel_gid_t gid;

libc/kernel/uapi/linux/msg.h

@@ -26,8 +26,8 @@
 #define MSG_EXCEPT 020000
 #define MSG_COPY 040000
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-struct msqid_ds {
-  struct ipc_perm msg_perm;
+struct __kernel_legacy_msqid_ds {
+  struct __kernel_legacy_ipc_perm msg_perm;
   struct msg * msg_first;
   struct msg * msg_last;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */

libc/kernel/uapi/linux/sem.h

@@ -32,8 +32,8 @@
 #define SEM_STAT 18
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SEM_INFO 19
-struct semid_ds {
-  struct ipc_perm sem_perm;
+struct __kernel_legacy_semid_ds {
+  struct __kernel_legacy_ipc_perm sem_perm;
   __kernel_time_t sem_otime;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   __kernel_time_t sem_ctime;
@@ -54,7 +54,7 @@ struct sembuf {
 };
 union semun {
   int val;
-  struct semid_ds __user * buf;
+  struct __kernel_legacy_semid_ds __user * buf;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   unsigned short __user * array;
   struct seminfo __user * __buf;

libc/kernel/uapi/linux/shm.h

@@ -28,8 +28,8 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SHMALL (ULONG_MAX - (1UL << 24))
 #define SHMSEG SHMMNI
-struct shmid_ds {
-  struct ipc_perm shm_perm;
+struct __kernel_legacy_shmid_ds {
+  struct __kernel_legacy_ipc_perm shm_perm;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
   int shm_segsz;
   __kernel_time_t shm_atime;

libc/libc.arm.map

@@ -1284,11 +1284,23 @@ LIBC_O {
     hasmntopt; # future
     lutimes; # future
     mblen; # future
+    msgctl; # future
+    msgget; # future
+    msgrcv; # future
+    msgsnd; # future
     pthread_getname_np; # future
     quotactl; # future
+    semctl; # future
+    semget; # future
+    semop; # future
+    semtimedop; # future
     setdomainname; # future
     setgrent; # future
     setpwent; # future
+    shmat; # future
+    shmctl; # future
+    shmdt; # future
+    shmget; # future
     sighold; # future
     sigignore; # future
     sigpause; # future

libc/libc.arm64.map

@@ -1206,11 +1206,23 @@ LIBC_O {
     hasmntopt; # future
     lutimes; # future
     mblen; # future
+    msgctl; # future
+    msgget; # future
+    msgrcv; # future
+    msgsnd; # future
     pthread_getname_np; # future
     quotactl; # future
+    semctl; # future
+    semget; # future
+    semop; # future
+    semtimedop; # future
     setdomainname; # future
     setgrent; # future
     setpwent; # future
+    shmat; # future
+    shmctl; # future
+    shmdt; # future
+    shmget; # future
     sighold; # future
     sigignore; # future
     sigpause; # future

libc/libc.map.txt

@@ -1309,11 +1309,23 @@ LIBC_O {
     hasmntopt; # future
     lutimes; # future
     mblen; # future
+    msgctl; # future
+    msgget; # future
+    msgrcv; # future
+    msgsnd; # future
     pthread_getname_np; # future
     quotactl; # future
+    semctl; # future
+    semget; # future
+    semop; # future
+    semtimedop; # future
     setdomainname; # future
     setgrent; # future
     setpwent; # future
+    shmat; # future
+    shmctl; # future
+    shmdt; # future
+    shmget; # future
     sighold; # future
     sigignore; # future
     sigpause; # future

libc/libc.mips.map

@@ -1268,11 +1268,23 @@ LIBC_O {
     hasmntopt; # future
     lutimes; # future
     mblen; # future
+    msgctl; # future
+    msgget; # future
+    msgrcv; # future
+    msgsnd; # future
     pthread_getname_np; # future
     quotactl; # future
+    semctl; # future
+    semget; # future
+    semop; # future
+    semtimedop; # future
     setdomainname; # future
     setgrent; # future
     setpwent; # future
+    shmat; # future
+    shmctl; # future
+    shmdt; # future
+    shmget; # future
     sighold; # future
     sigignore; # future
     sigpause; # future

libc/libc.mips64.map

@@ -1206,11 +1206,23 @@ LIBC_O {
     hasmntopt; # future
     lutimes; # future
     mblen; # future
+    msgctl; # future
+    msgget; # future
+    msgrcv; # future
+    msgsnd; # future
     pthread_getname_np; # future
     quotactl; # future
+    semctl; # future
+    semget; # future
+    semop; # future
+    semtimedop; # future
     setdomainname; # future
     setgrent; # future
     setpwent; # future
+    shmat; # future
+    shmctl; # future
+    shmdt; # future
+    shmget; # future
     sighold; # future
     sigignore; # future
     sigpause; # future

libc/libc.x86.map

@@ -1266,11 +1266,23 @@ LIBC_O {
     hasmntopt; # future
     lutimes; # future
     mblen; # future
+    msgctl; # future
+    msgget; # future
+    msgrcv; # future
+    msgsnd; # future
     pthread_getname_np; # future
     quotactl; # future
+    semctl; # future
+    semget; # future
+    semop; # future
+    semtimedop; # future
     setdomainname; # future
     setgrent; # future
     setpwent; # future
+    shmat; # future
+    shmctl; # future
+    shmdt; # future
+    shmget; # future
     sighold; # future
     sigignore; # future
     sigpause; # future

libc/libc.x86_64.map

@@ -1206,11 +1206,23 @@ LIBC_O {
     hasmntopt; # future
     lutimes; # future
     mblen; # future
+    msgctl; # future
+    msgget; # future
+    msgrcv; # future
+    msgsnd; # future
     pthread_getname_np; # future
     quotactl; # future
+    semctl; # future
+    semget; # future
+    semop; # future
+    semtimedop; # future
     setdomainname; # future
     setgrent; # future
     setpwent; # future
+    shmat; # future
+    shmctl; # future
+    shmdt; # future
+    shmget; # future
     sighold; # future
     sigignore; # future
     sigpause; # future

tests/Android.bp

@@ -107,6 +107,7 @@ cc_test_library {
         "sstream_test.cpp",
         "sys_epoll_test.cpp",
         "sys_mman_test.cpp",
+        "sys_msg_test.cpp",
         "sys_personality_test.cpp",
         "sys_prctl_test.cpp",
         "sys_procfs_test.cpp",
@@ -114,7 +115,9 @@ cc_test_library {
         "sys_quota_test.cpp",
         "sys_resource_test.cpp",
         "sys_select_test.cpp",
+        "sys_sem_test.cpp",
         "sys_sendfile_test.cpp",
+        "sys_shm_test.cpp",
         "sys_socket_test.cpp",
         "sys_stat_test.cpp",
         "sys_statvfs_test.cpp",

tests/sys_msg_test.cpp

@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include <gtest/gtest.h>
+
+#include <errno.h>
+#include <sys/msg.h>
+
+#include "TemporaryFile.h"
+
+TEST(sys_msg, smoke) {
+  // Create a queue.
+  TemporaryDir dir;
+  key_t key = ftok(dir.dirname, 1);
+  int id = msgget(key, IPC_CREAT|0666);
+  ASSERT_NE(id, -1);
+
+  // Queue should be empty.
+  msqid_ds ds;
+  memset(&ds, 0, sizeof(ds));
+  ASSERT_EQ(0, msgctl(id, IPC_STAT, &ds));
+  ASSERT_EQ(0U, ds.msg_qnum);
+  ASSERT_EQ(0U, ds.msg_cbytes);
+
+  // Send a message.
+  struct {
+    long type;
+    char data[32];
+  } msg = { 1, "hello world" };
+  ASSERT_EQ(0, msgsnd(id, &msg, sizeof(msg), 0));
+
+  // Queue should be non-empty.
+  ASSERT_EQ(0, msgctl(id, IPC_STAT, &ds));
+  ASSERT_EQ(1U, ds.msg_qnum);
+  ASSERT_EQ(sizeof(msg), ds.msg_cbytes);
+
+  // Read the message.
+  memset(&msg, 0, sizeof(msg));
+  ASSERT_EQ(static_cast<ssize_t>(sizeof(msg)), msgrcv(id, &msg, sizeof(msg), 0, 0));
+  ASSERT_EQ(1, msg.type);
+  ASSERT_STREQ("hello world", msg.data);
+
+  // Destroy the queue.
+  ASSERT_EQ(0, msgctl(id, IPC_RMID, 0));
+}
+
+TEST(sys_msg, msgctl_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, msgctl(-1, IPC_STAT, nullptr));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_msg, msgget_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, msgget(-1, 0));
+  ASSERT_EQ(ENOENT, errno);
+}
+
+TEST(sys_msg, msgrcv_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, msgrcv(-1, nullptr, 0, 0, 0));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_msg, msgsnd_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, msgsnd(-1, "", 0, 0));
+  ASSERT_EQ(EINVAL, errno);
+}

tests/sys_sem_test.cpp

@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include <gtest/gtest.h>
+
+#include <errno.h>
+#include <sys/sem.h>
+
+#include "TemporaryFile.h"
+
+TEST(sys_sem, smoke) {
+  // Create a semaphore.
+  TemporaryDir dir;
+  key_t key = ftok(dir.dirname, 1);
+  int id = semget(key, 1, IPC_CREAT|0666);
+  ASSERT_NE(id, -1);
+
+  // Check semaphore info.
+  semid_ds ds;
+  memset(&ds, 0, sizeof(ds));
+  ASSERT_EQ(0, semctl(id, 0, IPC_STAT, &ds));
+  ASSERT_EQ(1U, ds.sem_nsems);
+
+  ASSERT_EQ(0, semctl(id, 0, GETVAL));
+
+  // Increment.
+  sembuf ops[] = {{ .sem_num = 0, .sem_op = 1, .sem_flg = 0 }};
+  ASSERT_EQ(0, semop(id, ops, 1));
+  ASSERT_EQ(1, semctl(id, 0, GETVAL));
+
+  // Test timeouts.
+  timespec ts = { .tv_sec = 0, .tv_nsec = 100 };
+  ops[0] = { .sem_num = 0, .sem_op = 0, .sem_flg = 0 };
+  errno = 0;
+  ASSERT_EQ(-1, semtimedop(id, ops, 1, &ts));
+  ASSERT_EQ(EAGAIN, errno);
+  ASSERT_EQ(1, semctl(id, 0, GETVAL));
+
+  // Decrement.
+  ops[0] = { .sem_num = 0, .sem_op = -1, .sem_flg = 0 };
+  ASSERT_EQ(0, semop(id, ops, 1));
+  ASSERT_EQ(0, semctl(id, 0, GETVAL));
+
+  // Destroy the semaphore.
+  ASSERT_EQ(0, semctl(id, 0, IPC_RMID));
+}
+
+TEST(sys_sem, semget_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, semget(-1, -1, 0));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_sem, semctl_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, semctl(-1, 0, IPC_RMID));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_sem, semop_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, semop(-1, nullptr, 0));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_sem, semtimedop_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, semtimedop(-1, nullptr, 0, nullptr));
+  ASSERT_EQ(EINVAL, errno);
+}

tests/sys_shm_test.cpp

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include <gtest/gtest.h>
+
+#include <errno.h>
+#include <sys/shm.h>
+
+#include "TemporaryFile.h"
+
+TEST(sys_shm, smoke) {
+  // Create a segment.
+  TemporaryDir dir;
+  key_t key = ftok(dir.dirname, 1);
+  int id = shmget(key, 1234, IPC_CREAT|0666);
+  ASSERT_NE(id, -1);
+
+  // Check segment info.
+  shmid_ds ds;
+  memset(&ds, 0, sizeof(ds));
+  ASSERT_EQ(0, shmctl(id, IPC_STAT, &ds));
+  ASSERT_EQ(1234U, ds.shm_segsz);
+
+  // Attach.
+  void* p = shmat(id, 0, SHM_RDONLY);
+  ASSERT_NE(p, nullptr);
+
+  // Detach.
+  ASSERT_EQ(0, shmdt(p));
+
+  // Destroy the segment.
+  ASSERT_EQ(0, shmctl(id, IPC_RMID, 0));
+}
+
+TEST(sys_shm, shmat_failure) {
+  errno = 0;
+  ASSERT_EQ(reinterpret_cast<void*>(-1), shmat(-1, 0, SHM_RDONLY));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_shm, shmctl_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, shmctl(-1, IPC_STAT, nullptr));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_shm, shmdt_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, shmdt(nullptr));
+  ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(sys_shm, shmget_failure) {
+  errno = 0;
+  ASSERT_EQ(-1, shmget(-1, 1234, 0));
+  ASSERT_EQ(ENOENT, errno);
+}