| /* |
| * |
| * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * NAME |
| * msgctl02.c |
| * |
| * DESCRIPTION |
| * msgctl02 - create a message queue, then issue the IPC_SET command |
| * to lower the msg_qbytes value. |
| * |
| * ALGORITHM |
| * create a message queue |
| * loop if that option was specified |
| * call msgctl() with the IPC_SET command with a new msg_qbytes value |
| * check the return code |
| * if failure, issue a FAIL message and break remaining tests |
| * otherwise, |
| * if doing functionality testing |
| * if the msg_qbytes value is the new value |
| * issue a PASS message |
| * otherwise |
| * issue a FAIL message |
| * else issue a PASS message |
| * call cleanup |
| * |
| * USAGE: <for command-line> |
| * msgctl02 [-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 "test.h" |
| #include "usctest.h" |
| |
| #include "ipcmsg.h" |
| |
| char *TCID = "msgctl02"; |
| int TST_TOTAL = 1; |
| |
| int msg_q_1 = -1; /* to hold the message queue id */ |
| |
| struct msqid_ds qs_buf; |
| |
| unsigned long int new_bytes; |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| char *msg; |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "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; |
| |
| /* |
| * Set the msqid_ds structure values for the queue |
| */ |
| |
| TEST(msgctl(msg_q_1, IPC_SET, &qs_buf)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL | TTERRNO, "msgctl() call failed"); |
| } else { |
| if (STD_FUNCTIONAL_TEST) { |
| |
| /* do a stat to get current queue values */ |
| if ((msgctl(msg_q_1, IPC_STAT, &qs_buf) == -1)) { |
| tst_resm(TBROK, "stat on queue failed"); |
| continue; |
| } |
| |
| if (qs_buf.msg_qbytes == new_bytes) { |
| tst_resm(TPASS, "qs_buf.msg_qbytes is" |
| " the new value - %ld", |
| qs_buf.msg_qbytes); |
| } else { |
| tst_resm(TFAIL, "qs_buf.msg_qbytes " |
| "value is not expected"); |
| tst_resm(TINFO, "expected - %ld, " |
| "received - %ld", new_bytes, |
| qs_buf.msg_qbytes); |
| } |
| } else { |
| tst_resm(TPASS, "msgctl() call succeeded"); |
| } |
| } |
| |
| /* |
| * decrement by one the msq_qbytes value |
| */ |
| qs_buf.msg_qbytes -= 1; |
| new_bytes = qs_buf.msg_qbytes; |
| } |
| |
| cleanup(); |
| |
| tst_exit(); |
| } |
| |
| /* |
| * setup() - performs all the ONE TIME setup for this test. |
| */ |
| void setup(void) |
| { |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| 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(); |
| |
| /* get a message key */ |
| msgkey = getipckey(); |
| |
| /* make sure the initial # of bytes is 0 in our buffer */ |
| qs_buf.msg_qbytes = 0x3000; |
| |
| /* now we have a key, so let's create a message queue */ |
| if ((msg_q_1 = msgget(msgkey, IPC_CREAT | IPC_EXCL | MSG_RW)) == -1) { |
| tst_brkm(TBROK, cleanup, "Can't create message queue"); |
| } |
| |
| /* now stat the queue to get the default msg_qbytes value */ |
| if ((msgctl(msg_q_1, IPC_STAT, &qs_buf)) == -1) { |
| tst_brkm(TBROK, cleanup, "Can't stat the message queue"); |
| } |
| |
| /* decrement msg_qbytes and copy its value */ |
| qs_buf.msg_qbytes -= 1; |
| new_bytes = qs_buf.msg_qbytes; |
| } |
| |
| /* |
| * 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 */ |
| rm_queue(msg_q_1); |
| |
| tst_rmdir(); |
| |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| } |