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/*
*
* 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
*/
/*
* Test Name: alarm03
*
* Test Description:
* Check the functionality of the alarm() when the time input
* parameter is non-zero and the process does a fork.
*
* Expected Result:
* The alarm request should be cleared in the child process.
*
* Algorithm:
* Setup:
* Setup signal handling.
* Pause for SIGUSR1 if option specified.
*
* Test:
* Loop if the proper options are given.
* Execute system call
* Check return code, if system call failed (return=-1)
* Log the errno and Issue a FAIL message.
* Otherwise,
* Verify the Functionality of system call
* if successful,
* Issue Functionality-Pass message.
* Otherwise,
* Issue Functionality-Fail message.
* Cleanup:
* Print errno log and/or timing stats if options given
*
* Usage: <for command-line>
* alarm03 [-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
* 07/2001 Ported by Wayne Boyer
*
* RESTRICTIONS:
* None.
*/
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <sys/wait.h>
#include "test.h"
#include "usctest.h"
char *TCID="alarm03"; /* Test program identifier. */
int TST_TOTAL=1; /* Total number of test cases. */
extern int Tst_count; /* Test Case counter for tst_* routines */
int almreceived = 0; /* flag to indicate SIGALRM received or not */
void setup(); /* Main setup function of test */
void cleanup(); /* cleanup function for the test */
void sigproc(int sig); /* signal catching function */
int
main(int ac, char **av)
{
int lc; /* loop counter */
const char *msg; /* message returned from parse_opts */
int time_sec = 3; /* time for which alarm is set */
int sleep_time = 5; /* waiting time for the SIGALRM signal */
pid_t cpid; /* child process id */
/* Parse standard options given to run the test. */
msg = parse_opts(ac, av, (option_t *)NULL, NULL);
if (msg != (char *)NULL) {
tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg);
}
/* Perform global setup for test */
setup();
/* Check looping state if -i option given */
for (lc = 0; TEST_LOOPING(lc); lc++) {
/* Reset Tst_count in case we are looping. */
Tst_count=0;
/*
* Call First alarm() with non-zero time parameter
* 'time_sec' to send SIGALRM to the process.
*/
TEST(alarm(time_sec));
/* Now, fork a child process */
cpid = fork();
if (cpid < 0) {
tst_resm(TFAIL, "fork() fails to create child, "
"errno:%d", errno);
}
/* Wait for signal SIGALRM to be generated */
sleep(sleep_time);
if (STD_FUNCTIONAL_TEST) {
if (cpid == 0) { /* Child process */
/*
* For child process if almreceived is 0
* means alarm request is cleared.
*/
if (almreceived == 0) {
tst_resm(TPASS, "Functionality of "
"alarm(%u) successful",
time_sec);
} else {
tst_resm(TFAIL, "alarm request not "
"cleared in child, "
"almreceived:%d", almreceived);
}
} else { /* Parent process */
/* Wait for child to complete execution */
wait(0);
}
} else {
tst_resm(TPASS, "call returned %d", TEST_RETURN);
}
} /* End for TEST_LOOPING */
/* Call cleanup() to undo setup done for the test. */
cleanup();
/*NOTREACHED*/
} /* End main */
/*
* setup() - performs all ONE TIME setup for this test.
* Setup signal handler to catch SIGALRM signal.
*/
void
setup()
{
/* capture signals */
tst_sig(FORK, DEF_HANDLER, cleanup);
/* Pause if that option was specified */
TEST_PAUSE;
/* Set the signal catching function */
if (signal(SIGALRM, sigproc) == SIG_ERR) {
tst_brkm(TFAIL, cleanup,
"signal() fails to catch SIGALARM, errno=%d",
errno);
}
}
/*
* sigproc(int) - This function defines the action that has to be taken
* when the SIGALRM signal is caught.
* It also sets the variable which is used to check whether the
* alarm system call was successful.
*/
void
sigproc(int sig)
{
almreceived = almreceived + 1;
}
/*
* cleanup() - performs all ONE TIME cleanup for this test at
* completion or premature exit.
*/
void
cleanup()
{
/*
* 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();
}
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