201 lines
5 KiB
C
201 lines
5 KiB
C
/*
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*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* NAME
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* msgget04.c
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*
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* DESCRIPTION
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* msgget04 - test for an EACCES error by creating a message queue
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* with no read or write permission and then attempting
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* to access it with various permissions.
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*
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* ALGORITHM
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* Create a message queue with no read or write permission
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* loop if that option was specified
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* Try to access the message queue with various permissions
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* check the errno value
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* issue a PASS message if we get EACCES
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* otherwise, the tests fails
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* issue a FAIL message
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* break any remaining tests
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* call cleanup
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*
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* USAGE: <for command-line>
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* msgget04 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
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* where, -c n : Run n copies concurrently.
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* -e : Turn on errno logging.
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* -i n : Execute test n times.
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* -I x : Execute test for x seconds.
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* -P x : Pause for x seconds between iterations.
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* -t : Turn on syscall timing.
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*
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* HISTORY
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* 03/2001 - Written by Wayne Boyer
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*
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* RESTRICTIONS
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* none
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*/
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#include <pwd.h>
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#include "test.h"
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#include "usctest.h"
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#include "ipcmsg.h"
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char *TCID = "msgget04";
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int TST_TOTAL = 3;
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extern int Tst_count;
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char nobody_uid[] = "nobody";
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struct passwd *ltpuser;
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int exp_enos[] = {EACCES, 0}; /* 0 terminated list of expected errnos */
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int msg_q_1 = -1; /* to hold the message queue id */
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int test_flags[] = {MSG_RD, MSG_WR, MSG_RD | MSG_WR};
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int main(int ac, char **av)
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{
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int lc; /* loop counter */
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char *msg; /* message returned from parse_opts */
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int i; /* a counter */
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/* parse standard options */
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if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){
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tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
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}
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setup(); /* global setup */
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/* The following loop checks looping state if -i option given */
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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/* reset Tst_count in case we are looping */
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Tst_count = 0;
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/* loop through the test cases */
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for (i=0; i<TST_TOTAL; i++) {
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/*
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* Try to access the message queue with specified
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* permissions.
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*/
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TEST(msgget(msgkey, test_flags[i]));
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if (TEST_RETURN != -1) {
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tst_resm(TFAIL, "call succeeded "
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"when EACCES error expected");
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continue;
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}
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TEST_ERROR_LOG(TEST_ERRNO);
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switch(TEST_ERRNO) {
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case EACCES:
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tst_resm(TPASS, "expected failure - errno = "
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"%d : %s", TEST_ERRNO,
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strerror(TEST_ERRNO));
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break;
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default:
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tst_resm(TFAIL, "call failed with an "
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"unexpected error - %d : %s",
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TEST_ERRNO, strerror(TEST_ERRNO));
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break;
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}
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}
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}
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cleanup();
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/*NOTREACHED*/
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return(0);
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}
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/*
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* setup() - performs all the ONE TIME setup for this test.
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*/
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void
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setup(void)
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{
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/* capture signals */
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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/* Set up the expected error numbers for -e option */
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TEST_EXP_ENOS(exp_enos);
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/* Pause if that option was specified */
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TEST_PAUSE;
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/* Switch to nobody user for correct error code collection */
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if (geteuid() != 0) {
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tst_brkm(TBROK, tst_exit, "Test must be run as root");
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}
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ltpuser = getpwnam(nobody_uid);
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if (setuid(ltpuser->pw_uid) == -1) {
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tst_resm(TINFO, "setuid failed to "
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"to set the effective uid to %d",
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ltpuser->pw_uid);
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perror("setuid");
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}
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/*
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* Create a temporary directory and cd into it.
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* This helps to ensure that a unique msgkey is created.
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* See ../lib/libipc.c for more information.
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*/
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tst_tmpdir();
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msgkey = getipckey();
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/*
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* Create the message queue without specifying permissions.
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*/
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if ((msg_q_1 = msgget(msgkey, IPC_CREAT|IPC_EXCL)) == -1) {
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tst_brkm(TBROK, cleanup, "Could not create message queue"
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" - errno = %d : %s", errno, strerror(errno));
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}
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}
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/*
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* cleanup() - performs all the ONE TIME cleanup for this test at completion
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* or premature exit.
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*/
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void
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cleanup(void)
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{
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/* if it exists, remove the message queue */
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rm_queue(msg_q_1);
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/* Remove the temporary directory */
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tst_rmdir();
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/*
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* print timing stats if that option was specified.
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* print errno log if that option was specified.
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*/
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TEST_CLEANUP;
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/* exit with return code appropriate for results */
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tst_exit();
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}
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