src/test/ipc/msgsnd/msgsnd03.c

Go to the documentation of this file.

/*
 *
 *   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
 *      msgsnd03.c
 *
 * DESCRIPTION
 *      msgsnd03 - test for EINVAL error
 *
 * ALGORITHM
 *      create a message queue with read/write permissions
 *      create a trivial message buffer
 *      loop if that option was specified
 *      call msgsnd() using four different invalid cases
 *      check the errno value
 *        issue a PASS message if we get EINVAL
 *      otherwise, the tests fails
 *        issue a FAIL message
 *      call cleanup
 *
 * USAGE:  <for command-line>
 *  msgsnd03 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
 *     where,  -c n : Run n copies concurrently.
 *             -e   : Turn on errno logging.
 *             -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 "test.h"
#include "usctest.h"

#include "ipcmsg.h"

void cleanup(void);
void setup(void);

char *TCID = "msgsnd03";
int TST_TOTAL = 4;
extern int Tst_count;


int exp_enos[] = {EINVAL, 0};   /* 0 terminated list of expected errnos */

int msg_q_1 = -1;               /* The message queue id created in setup */
MSGBUF msg_buf;                 /* a buffer for the message to queue */
int bad_q = -1;                 /* a value to use as a bad queue ID */

struct test_case_t {
        int *queue_id;
        MSGBUF *buffer;
        long mtype;
        int msg_size;
        int error;
} TC[] = {
        /* EINVAL - the queue ID is invalid */
        {&bad_q, &msg_buf, 1, 1, EINVAL},

        /* EINVAL - the message type is not positive (0) */
        {&msg_q_1, &msg_buf, 0, 1, EINVAL},

        /* EINVAL - the message type is not positive (>0) */
        {&msg_q_1, &msg_buf, -1, 1, EINVAL},

        /* EINVAL - the message size is less than zero */
        {&msg_q_1, &msg_buf, 1, -1, EINVAL}
};

int main(int ac, char **av)
{
        int lc;                         /* loop counter */
        char *msg;                      /* message returned from parse_opts */
        int i;

        /* 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;

                /*
                 * loop through the test cases
                 */
        
                for (i=0; i<TST_TOTAL; i++) {

                        /* set the message type */
                        msg_buf.mtype = TC[i].mtype;

                        /* make the call with the TEST macro */
                        TEST(msgsnd(*(TC[i].queue_id), TC[i].buffer,
                             TC[i].msg_size, 0));
        
                        if (TEST_RETURN != -1) {
                                tst_resm(TFAIL, "call succeeded unexpectedly");
                                continue;
                        }
        
                        TEST_ERROR_LOG(TEST_ERRNO);

                        if (TEST_ERRNO == TC[i].error) {
                                tst_resm(TPASS, "expected failure - "
                                         "errno = %d : %s", TEST_ERRNO,
                                         strerror(TEST_ERRNO));
                        } else {
                                tst_resm(TFAIL, "unexpected error - %d : %s",
                                         TEST_ERRNO, strerror(TEST_ERRNO));
                        }
                }
        }

        cleanup();

        /*NOTREACHED*/
        return(0);
}

/*
 * setup() - performs all the ONE TIME setup for this test.
 */
void
setup(void)
{
        /* capture signals */
        tst_sig(NOFORK, DEF_HANDLER, cleanup);

        /* Set up the expected error numbers for -e option */
        TEST_EXP_ENOS(exp_enos);

        /* 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();

        /* create a message queue with read/write permission */
        if ((msg_q_1 = msgget(msgkey, IPC_CREAT | IPC_EXCL | MSG_RW)) == -1) {
                tst_brkm(TBROK, cleanup, "Can't create message queue");
        }

        /* initialize the message buffer with something trivial */
        msg_buf.mtype = MSGTYPE;
        msg_buf.mtext[0] = 'a';
}

/*
 * 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();
}

---