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/* Basic tests for SYSV message queue functions.
Copyright (C) 2016-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <support/support.h>
#include <support/check.h>
#include <support/temp_file.h>
#define TEXTSIZE 32
struct msgbuf_t
{
#ifdef _GNU_SOURCE
__syscall_slong_t type;
#else
long type;
#endif
char buf[TEXTSIZE];
};
#define MSGTYPE 0x01020304
#define MSGDATA "0123456789"
/* These are for the temporary file we generate. */
static char *name;
static int msqid;
static void
remove_msq (void)
{
/* Enforce message queue removal in case of early test failure.
Ignore error since the msgq may already have being removed. */
msgctl (msqid, IPC_RMID, NULL);
}
static void
do_prepare (int argc, char *argv[])
{
int fd = create_temp_file ("tst-sysvmsg.", &name);
if (fd == -1)
FAIL_EXIT1 ("cannot create temporary file (errno=%d)", errno);
}
#define PREPARE do_prepare
/* It is not an extensive test, but rather a functional one aimed to check
correct parameter passing on kernel. */
#define MSGQ_MODE 0644
static int
do_test (void)
{
atexit (remove_msq);
key_t key = ftok (name, 'G');
if (key == -1)
FAIL_EXIT1 ("ftok failed");
msqid = msgget (key, MSGQ_MODE | IPC_CREAT);
if (msqid == -1)
{
if (errno == ENOSYS)
FAIL_UNSUPPORTED ("msgget not supported");
FAIL_EXIT1 ("msgget failed (errno=%d)", errno);
}
/* Get message queue kernel information and do some sanity checks. */
struct msqid_ds msginfo;
if (msgctl (msqid, IPC_STAT, &msginfo) == -1)
FAIL_EXIT1 ("msgctl with IPC_STAT failed (errno=%d)", errno);
if (msginfo.msg_perm.__key != key)
FAIL_EXIT1 ("msgid_ds::msg_perm::key (%d) != %d",
(int) msginfo.msg_perm.__key, (int) key);
if (msginfo.msg_perm.mode != MSGQ_MODE)
FAIL_EXIT1 ("msgid_ds::msg_perm::mode (%o) != %o",
msginfo.msg_perm.mode, MSGQ_MODE);
if (msginfo.msg_qnum != 0)
FAIL_EXIT1 ("msgid_ds::msg_qnum (%lu) != 0",
(long unsigned) msginfo.msg_qnum);
/* Check if last argument (IPC_NOWAIT) is correctly handled. */
struct msgbuf_t msg2rcv = { 0 };
if (msgrcv (msqid, &msg2rcv, sizeof (msg2rcv.buf), MSGTYPE,
IPC_NOWAIT) == -1
&& errno != ENOMSG)
FAIL_EXIT1 ("msgrcv failed (errno=%d)", errno);
struct msgbuf_t msg2snd = { MSGTYPE, MSGDATA };
if (msgsnd (msqid, &msg2snd, sizeof (msg2snd.buf), 0) == -1)
FAIL_EXIT1 ("msgsnd failed (errno=%d)", errno);
if (msgrcv (msqid, &msg2rcv, sizeof (msg2rcv.buf), MSGTYPE, 0) == -1)
FAIL_EXIT1 ("msgrcv failed (errno=%d)", errno);
int ret = 0;
if (strncmp (msg2snd.buf, msg2rcv.buf, TEXTSIZE) != 0)
ret = 1;
if (msgctl (msqid, IPC_RMID, NULL) == -1)
FAIL_EXIT1 ("msgctl failed");
return ret;
}
#include <support/test-driver.c>
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