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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 #include <gtest/gtest.h>
     30 
     31 #include <errno.h>
     32 #include <sys/msg.h>
     33 
     34 #include "TemporaryFile.h"
     35 
     36 TEST(sys_msg, smoke) {
     37   if (msgctl(-1, IPC_STAT, nullptr) == -1 && errno == ENOSYS) {
     38     GTEST_LOG_(INFO) << "no <sys/msg.h> support in this kernel\n";
     39     return;
     40   }
     41 
     42   // Create a queue.
     43   TemporaryDir dir;
     44   key_t key = ftok(dir.dirname, 1);
     45   int id = msgget(key, IPC_CREAT|0666);
     46   ASSERT_NE(id, -1);
     47 
     48   // Queue should be empty.
     49   msqid_ds ds;
     50   memset(&ds, 0, sizeof(ds));
     51   ASSERT_EQ(0, msgctl(id, IPC_STAT, &ds));
     52   ASSERT_EQ(0U, ds.msg_qnum);
     53   ASSERT_EQ(0U, ds.msg_cbytes);
     54 
     55   // Send a message.
     56   struct {
     57     long type;
     58     char data[32];
     59   } msg = { 1, "hello world" };
     60   ASSERT_EQ(0, msgsnd(id, &msg, sizeof(msg), 0));
     61 
     62   // Queue should be non-empty.
     63   ASSERT_EQ(0, msgctl(id, IPC_STAT, &ds));
     64   ASSERT_EQ(1U, ds.msg_qnum);
     65   ASSERT_EQ(sizeof(msg), ds.msg_cbytes);
     66 
     67   // Read the message.
     68   memset(&msg, 0, sizeof(msg));
     69   ASSERT_EQ(static_cast<ssize_t>(sizeof(msg)), msgrcv(id, &msg, sizeof(msg), 0, 0));
     70   ASSERT_EQ(1, msg.type);
     71   ASSERT_STREQ("hello world", msg.data);
     72 
     73   // Destroy the queue.
     74   ASSERT_EQ(0, msgctl(id, IPC_RMID, 0));
     75 }
     76 
     77 TEST(sys_msg, msgctl_failure) {
     78   errno = 0;
     79   ASSERT_EQ(-1, msgctl(-1, IPC_STAT, nullptr));
     80   ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
     81 }
     82 
     83 TEST(sys_msg, msgget_failure) {
     84   errno = 0;
     85   ASSERT_EQ(-1, msgget(-1, 0));
     86   ASSERT_TRUE(errno == ENOENT || errno == ENOSYS);
     87 }
     88 
     89 TEST(sys_msg, msgrcv_failure) {
     90   errno = 0;
     91   ASSERT_EQ(-1, msgrcv(-1, nullptr, 0, 0, 0));
     92   ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
     93 }
     94 
     95 TEST(sys_msg, msgsnd_failure) {
     96   errno = 0;
     97   ASSERT_EQ(-1, msgsnd(-1, "", 0, 0));
     98   ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
     99 }
    100