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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
*/
/*
* NAME
* getpgid02.c
*
* DESCRIPTION
* Testcase to check the basic functionality of getpgid().
*
* ALGORITHM
* test 1: Does getpgid(-99) and expects ESRCH.
* test 2: Searches an unused pid and expects ESRCH.
*
* USAGE: <for command-line>
* getpgid02 [-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
* 07/2001 Ported by Wayne Boyer
*
* RESTRICTIONS
* none
*/
#include <sys/types.h>
#include <errno.h>
#include <varargs.h>
#include <sys/wait.h>
#include <test.h>
#include <usctest.h>
void setup(void);
void cleanup(void);
char *TCID = "getpgid01";
int TST_TOTAL = 2;
extern int Tst_count;
int pgid_0, pgid_1;
#define BADPID -99
int exp_enos[]={ESRCH, 0};
struct test_case_t {
int *id;
int error;
} TC[] = {
/* The pid value is negative */
{&pgid_0, ESRCH},
/* The pid value does not match any process */
{&pgid_1, ESRCH}
};
main(int ac, char **av)
{
int lc; /* loop counter */
int i;
const char *msg; /* message returned by parse_opts */
/* 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();
/* set up the expected errnos */
TEST_EXP_ENOS(exp_enos);
/* 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;
/* loop through the test cases */
for (i = 0; i < TST_TOTAL; i++) {
TEST(getpgid(*TC[i].id));
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 - "
"expected %d", TEST_ERRNO,
strerror(TEST_ERRNO), TC[i].error);
}
}
}
cleanup();
/*NOTREACHED*/
}
/*
* setup() - performs all ONE TIME setup for this test.
*/
void
setup()
{
/* capture signals */
tst_sig(NOFORK, DEF_HANDLER, cleanup);
/* Pause if that option was specified */
TEST_PAUSE;
pgid_0 = BADPID;
/*
* Find a pid that isn't currently being used. Start
* at 'our pid - 1' and go backwards until we find one.
* In this way, we can be reasonably sure that the pid
* we find won't be reused for a while as new pids are
* allocated counting up to PID_MAX.
*/
for (pgid_1 = getpid() - 1; --pgid_1 > 0; ) {
if (kill(pgid_1, 0) < 0 && errno == ESRCH) {
break;
}
}
}
/*
* 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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