minix/test/ipc/msgget/msgget01.c

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2009-09-21 16:53:53 +02:00
/*
*
* Copyright (c) International Business Machines Corp., 2001
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* NAME
* msgget01.c
*
* DESCRIPTION
* msgget01 - create a message queue, write a message to it and
* read it back.
*
* ALGORITHM
* loop if that option was specified
* create a message queue
* check the return code
* if failure, issue a FAIL message.
* otherwise,
* if doing functionality testing by writting a message to the queue,
* reading it back and comparing the two.
* if the messages are the same,
* issue a PASS message
* otherwise
* issue a FAIL message
* call cleanup
*
* USAGE: <for command-line>
* msgget01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
* where, -c n : Run n copies concurrently.
* -f : Turn off functionality Testing.
* -i n : Execute test n times.
* -I x : Execute test for x seconds.
* -P x : Pause for x seconds between iterations.
* -t : Turn on syscall timing.
*
* HISTORY
* 03/2001 - Written by Wayne Boyer
*
* RESTRICTIONS
* none
*/
#include "ipcmsg.h"
#include <string.h>
char *TCID = "msgget01";
int TST_TOTAL = 1;
extern int Tst_count;
int msg_q_1 = -1; /* to hold the message queue ID */
int main(int ac, char **av)
{
int lc; /* loop counter */
char *msg; /* message returned from parse_opts */
void check_functionality(void);
/* parse standard options */
if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){
tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
}
setup(); /* global setup */
/* The following loop checks looping state if -i option given */
for (lc = 0; TEST_LOOPING(lc); lc++) {
/* reset Tst_count in case we are looping */
Tst_count = 0;
/*
* Use TEST macro to make the call to create the message queue
*/
TEST(msgget(msgkey, IPC_CREAT | IPC_EXCL | MSG_RD | MSG_WR));
if (TEST_RETURN == -1) {
tst_resm(TFAIL, "%s call failed - errno = %d : %s",
TCID, TEST_ERRNO, strerror(TEST_ERRNO));
} else {
msg_q_1 = TEST_RETURN;
if (STD_FUNCTIONAL_TEST) {
/*
* write a message to the queue.
* read back the message.
* PASS the test if they are the same.
*/
check_functionality();
} else {
tst_resm(TPASS, "message queue was created");
}
}
/*
* remove the message queue that was created and mark the ID
* as invalid.
*/
if (msg_q_1 != -1) {
rm_queue(msg_q_1);
msg_q_1 = -1;
}
}
cleanup();
/*NOTREACHED*/
return(0);
}
/*
* check_functionality() - check the functionality of the tested system call.
*/
void
check_functionality()
{
int i=0;
MSGBUF snd_buf, rcv_buf;
/* EAGLE: Houston, Tranquility Base here. The Eagle has landed! */
char *queue_msg =
"Qston, check_functionality here. The message has queued!";
/*
* copy our message into the buffer and then set the type.
*/
do {
snd_buf.mtext[i++] = *queue_msg;
} while(*queue_msg++ != (char)NULL);
snd_buf.mtype = MSGTYPE;
/* send the message */
if(msgsnd(msg_q_1, &snd_buf, MSGSIZE, 0) == -1) {
tst_brkm(TBROK, cleanup, "Could not send a message in the "
"check_functionality() routine.");
}
/* receive the message */
if(msgrcv(msg_q_1, &rcv_buf, MSGSIZE, MSGTYPE, IPC_NOWAIT) == -1) {
tst_brkm(TBROK, cleanup, "Could not read a messages in the "
"check_functionality() routine.");
}
if(strcmp(snd_buf.mtext, rcv_buf.mtext) == 0) {
tst_resm(TPASS, "message received = message sent");
} else {
tst_resm(TFAIL, "message received != message sent");
}
}
/*
* setup() - performs all the ONE TIME setup for this test.
*/
void
setup(void)
{
/* capture signals */
tst_sig(NOFORK, DEF_HANDLER, cleanup);
/* Pause if that option was specified */
TEST_PAUSE;
/*
* Create a temporary directory and cd into it.
* This helps to ensure that a unique msgkey is created.
* See ../lib/libipc.c for more information.
*/
tst_tmpdir();
msgkey = getipckey();
}
/*
* cleanup() - performs all the ONE TIME cleanup for this test at completion
* or premature exit.
*/
void
cleanup(void)
{
/* if it exists, remove the message queue that was created */
rm_queue(msg_q_1);
/* Remove the temporary directory */
tst_rmdir();
/*
* print timing stats if that option was specified.
* print errno log if that option was specified.
*/
TEST_CLEANUP;
/* exit with return code appropriate for results */
tst_exit();
}