Flesh out <sys/msg.h>, <sys/sem.h>, <sys/shm.h>.
Also fix <sys/ipc.h>.
Not useful except to systems/bringup folks for testing. Trivial tests
added, and double-checked under strace to see that things look right.
x86 -- which works differently to everything else -- tested on the host.
Bug: http://b/27952303
Change-Id: I328534e994ae9e90755f545478fba03038c0bb94
diff --git a/tests/Android.bp b/tests/Android.bp
index 8f937a3..0be0f4c 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -107,6 +107,7 @@
"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 @@
"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",
diff --git a/tests/sys_msg_test.cpp b/tests/sys_msg_test.cpp
new file mode 100644
index 0000000..e715979
--- /dev/null
+++ b/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);
+}
diff --git a/tests/sys_sem_test.cpp b/tests/sys_sem_test.cpp
new file mode 100644
index 0000000..5acc792
--- /dev/null
+++ b/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);
+}
diff --git a/tests/sys_shm_test.cpp b/tests/sys_shm_test.cpp
new file mode 100644
index 0000000..4929b8f
--- /dev/null
+++ b/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);
+}