166 lines
3.3 KiB
C
166 lines
3.3 KiB
C
/*
|
|
*
|
|
* 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
|
|
* fork03.c
|
|
*
|
|
* DESCRIPTION
|
|
* Check that child can use a large text space and do a large
|
|
* number of operations.
|
|
*
|
|
* ALGORITHM
|
|
* Fork one process, check for pid == 0 in child.
|
|
* Check for pid > 0 in parent after wait.
|
|
*
|
|
* USAGE
|
|
* fork03
|
|
*
|
|
* HISTORY
|
|
* 07/2001 Ported by Wayne Boyer
|
|
*
|
|
* RESTRICTIONS
|
|
* None
|
|
*/
|
|
|
|
#include <sys/wait.h>
|
|
#include "test.h"
|
|
#include "usctest.h"
|
|
|
|
void setup(void);
|
|
void cleanup(void) __attribute__((noreturn));
|
|
|
|
const char *TCID = "fork03";
|
|
int TST_TOTAL = 1;
|
|
extern int Tst_count;
|
|
|
|
void setup(void);
|
|
void cleanup(void) __attribute__((noreturn));
|
|
|
|
int
|
|
main(int ac, char **av)
|
|
{
|
|
float fl1, fl2;
|
|
int i;
|
|
int pid1, pid2, status;
|
|
|
|
int lc; /* loop counter */
|
|
const char *msg; /* message returned from 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);
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
/*
|
|
* perform global setup for the test
|
|
*/
|
|
setup();
|
|
|
|
/*
|
|
* check looping state if -i option is given
|
|
*/
|
|
for (lc = 0; TEST_LOOPING(lc); lc++) {
|
|
/*
|
|
* reset Tst_count in case we are looping.
|
|
*/
|
|
Tst_count = 0;
|
|
|
|
if ((pid1 = fork()) == -1) {
|
|
tst_brkm(TBROK, cleanup, "fork() failed");
|
|
}
|
|
|
|
if (pid1 == 0) { /* child */
|
|
/* child uses some cpu cycles */
|
|
for (i = 1; i < 32767; i++) {
|
|
fl1 = 0.000001;
|
|
fl1 = fl2 = 0.000001;
|
|
fl1 = fl1 * 10.0;
|
|
fl2 = fl1 / 1.232323;
|
|
fl1 = fl2 - fl2;
|
|
fl1 = fl2;
|
|
}
|
|
|
|
/* Pid must always be zero in child */
|
|
|
|
if (pid1 != 0) {
|
|
exit(1);
|
|
} else {
|
|
exit(0);
|
|
}
|
|
} else { /* parent */
|
|
tst_resm(TINFO, "process id in parent of child from "
|
|
"fork : %d", pid1);
|
|
pid2 = wait(&status); /* wait for child */
|
|
|
|
if (pid1 != pid2) {
|
|
tst_resm(TFAIL, "pids don't match : %d vs %d",
|
|
pid1, pid2);
|
|
continue;
|
|
}
|
|
|
|
if ((status >> 8) != 0) {
|
|
tst_resm(TFAIL, "child exited with failure");
|
|
continue;
|
|
}
|
|
|
|
tst_resm(TPASS, "test 1 PASSED");
|
|
}
|
|
}
|
|
cleanup();
|
|
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
/*
|
|
* setup() - performs all ONE TIME setup for this test
|
|
*/
|
|
void
|
|
setup()
|
|
{
|
|
/*
|
|
* capture signals
|
|
*/
|
|
tst_sig(FORK, DEF_HANDLER, cleanup);
|
|
|
|
/*
|
|
* Pause if that option was specified
|
|
*/
|
|
TEST_PAUSE;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
tst_exit();
|
|
}
|