/*
* 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 <android-base/file.h>
TEST(sys_msg, smoke) {
if (msgctl(-1 , IPC_STAT, nullptr) == -1 && errno == ENOSYS) {
GTEST_SKIP() << "no <sys/msg.h> support in this kernel" ;
}
// Create a queue.
TemporaryDir dir;
key_t key = ftok(dir.path, 1 );
int id = msgget(key, IPC_CREAT|0666 );
ASSERT_NE(id, -1 );
// Queue should be empty.
msqid_ds ds = {};
ASSERT_EQ(0 , msgctl(id, IPC_STAT, &ds));
ASSERT_EQ(0 U, ds.msg_qnum);
ASSERT_EQ(0 U, ds.msg_cbytes);
// Send a message.
struct {
long type;
char data[32 ];
} msg = { 1 , "hello world" };
ASSERT_EQ(0 , msgsnd(id, &msg, sizeof (msg.data), 0 ));
// Queue should be non-empty.
ASSERT_EQ(0 , msgctl(id, IPC_STAT, &ds));
ASSERT_EQ(1 U, ds.msg_qnum);
ASSERT_EQ(sizeof (msg.data), ds.msg_cbytes);
// Read the message.
msg = {};
ASSERT_EQ(static_cast <ssize_t>(sizeof (msg.data)),
msgrcv(id, &msg, sizeof (msg.data), 0 , 0 ));
ASSERT_EQ(1 , msg.type);
ASSERT_STREQ("hello world" , msg.data);
// Destroy the queue.
ASSERT_EQ(0 , msgctl(id, IPC_RMID, nullptr));
}
TEST(sys_msg, msgctl_failure) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wnonnull"
errno = 0 ;
ASSERT_EQ(-1 , msgctl(-1 , IPC_STAT, nullptr));
ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
#pragma clang diagnostic pop
}
TEST(sys_msg, msgget_failure) {
errno = 0 ;
ASSERT_EQ(-1 , msgget(-1 , 0 ));
ASSERT_TRUE(errno == ENOENT || errno == ENOSYS);
}
TEST(sys_msg, msgrcv_failure) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wnonnull"
errno = 0 ;
ASSERT_EQ(-1 , msgrcv(-1 , nullptr, 0 , 0 , 0 ));
ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
#pragma clang diagnostic pop
}
TEST(sys_msg, msgsnd_failure) {
struct {
long type;
char data[1 ];
} msg = { 1 , "" };
errno = 0 ;
ASSERT_EQ(-1 , msgsnd(-1 , &msg, sizeof (msg.data), 0 ));
ASSERT_TRUE(errno == EINVAL || errno == ENOSYS);
}
Messung V0.5 in Prozent C=93 H=87 G=89
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-28)
¤
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