202 lines
5.3 KiB
C
202 lines
5.3 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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* Test Name: alarm03
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*
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* Test Description:
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* Check the functionality of the alarm() when the time input
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* parameter is non-zero and the process does a fork.
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*
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* Expected Result:
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* The alarm request should be cleared in the child process.
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*
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* Algorithm:
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* Setup:
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* Setup signal handling.
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* Pause for SIGUSR1 if option specified.
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*
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* Test:
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* Loop if the proper options are given.
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* Execute system call
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* Check return code, if system call failed (return=-1)
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* Log the errno and Issue a FAIL message.
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* Otherwise,
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* Verify the Functionality of system call
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* if successful,
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* Issue Functionality-Pass message.
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* Otherwise,
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* Issue Functionality-Fail message.
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* Cleanup:
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* Print errno log and/or timing stats if options given
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*
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* Usage: <for command-line>
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* alarm03 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
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* where, -c n : Run n copies concurrently.
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* -f : Turn off functionality Testing.
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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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* 07/2001 Ported 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 <sys/types.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/wait.h>
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#include "test.h"
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#include "usctest.h"
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const char *TCID="alarm03"; /* Test program identifier. */
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int TST_TOTAL=1; /* Total number of test cases. */
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extern int Tst_count; /* Test Case counter for tst_* routines */
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int almreceived = 0; /* flag to indicate SIGALRM received or not */
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void setup(); /* Main setup function of test */
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void cleanup(void) __attribute__((noreturn)); /* cleanup function for the test */
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void sigproc(int sig); /* signal catching function */
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int
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main(int ac, char **av)
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{
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int lc; /* loop counter */
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const char *msg; /* message returned from parse_opts */
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int time_sec = 3; /* time for which alarm is set */
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int sleep_time = 5; /* waiting time for the SIGALRM signal */
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pid_t cpid; /* child process id */
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/* Parse standard options given to run the test. */
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msg = parse_opts(ac, av, (option_t *)NULL, NULL);
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if (msg != (char *)NULL) {
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tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg);
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}
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/* Perform global setup for test */
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setup();
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/* Check 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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/*
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* Call First alarm() with non-zero time parameter
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* 'time_sec' to send SIGALRM to the process.
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*/
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TEST(alarm(time_sec));
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/* Now, fork a child process */
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cpid = fork();
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if (cpid < 0) {
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tst_resm(TFAIL, "fork() fails to create child, "
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"errno:%d", errno);
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}
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/* Wait for signal SIGALRM to be generated */
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sleep(sleep_time);
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if (STD_FUNCTIONAL_TEST) {
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if (cpid == 0) { /* Child process */
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/*
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* For child process if almreceived is 0
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* means alarm request is cleared.
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*/
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if (almreceived == 0) {
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tst_resm(TPASS, "Functionality of "
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"alarm(%u) successful",
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time_sec);
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} else {
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tst_resm(TFAIL, "alarm request not "
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"cleared in child, "
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"almreceived:%d", almreceived);
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}
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} else { /* Parent process */
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/* Wait for child to complete execution */
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wait(0);
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}
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} else {
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tst_resm(TPASS, "call returned %d", TEST_RETURN);
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}
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} /* End for TEST_LOOPING */
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/* Call cleanup() to undo setup done for the test. */
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cleanup();
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/*NOTREACHED*/
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} /* End main */
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/*
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* setup() - performs all ONE TIME setup for this test.
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* Setup signal handler to catch SIGALRM signal.
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*/
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void
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setup()
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{
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/* capture signals */
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tst_sig(FORK, DEF_HANDLER, cleanup);
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/* Pause if that option was specified */
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TEST_PAUSE;
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/* Set the signal catching function */
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if (signal(SIGALRM, sigproc) == SIG_ERR) {
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tst_brkm(TFAIL, cleanup,
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"signal() fails to catch SIGALARM, errno=%d",
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errno);
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}
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}
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/*
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* sigproc(int) - This function defines the action that has to be taken
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* when the SIGALRM signal is caught.
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* It also sets the variable which is used to check whether the
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* alarm system call was successful.
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*/
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void
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sigproc(int sig)
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{
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almreceived = almreceived + 1;
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}
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/*
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* cleanup() - performs all ONE TIME cleanup for this test at
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* completion or premature exit.
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*/
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void
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cleanup()
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{
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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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