newlib-cygwin/winsup/testsuite/winsup.api/ltp/exit01.c

166 lines
3.4 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
* exit01.c
*
* DESCRIPTION
* Check that exit returns the correct values to the waiting parent
*
* ALGORITHM
* Fork a process that immediately calls exit() with a known
* value. Check for that value in the parent.
*
* USAGE
* exit01
*
* HISTORY
* 07/2001 Ported by Wayne Boyer
*
* RESTRICTIONS
* None
*/
#include <signal.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include "test.h"
#include "usctest.h"
void cleanup(void) __attribute__((noreturn));
void setup(void);
const char *TCID = "exit01";
int TST_TOTAL = 1;
extern int Tst_count;
int
main(int ac, char **av)
{
int pid, npid, sig, nsig, exno, nexno, status;
int rval = 0;
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 PARSIkNG ERROR - %s", msg);
/*NOTREACHED*/
}
setup(); /* global setup for test */
/* 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;
sig = 0;
exno = 1;
if ((pid = fork()) == -1) {
tst_brkm(TBROK, cleanup, "fork failed, errno=%d",
errno, strerror(errno));
}
if (pid == 0) { /* parent */
exit(exno);
} else {
sleep(1); /* let child start */
npid = wait(&status);
if (npid != pid) {
tst_resm(TFAIL, "wait error: "
"unexpected pid returned");
rval = 1;
}
nsig = status % 256;
/*
* Check if the core dump bit has been set, bit # 7
*/
if (nsig >= 128) {
nsig = nsig - 128;
}
/*
* nsig is the signal number returned by wait
*/
if (nsig != sig) {
tst_resm(TFAIL, "wait error: "
"unexpected signal returned");
rval = 1;
}
/*
* nexno is the exit number returned by wait
*/
nexno = status / 256;
if (nexno != exno) {
tst_resm(TFAIL, "wait error: "
"unexpected exit number returned");
rval = 1;
}
}
if (rval != 1) {
tst_resm(TPASS, "exit() test PASSED");
}
}
cleanup();
/*NOTREACHED*/
}
/*
* setup() - performs all ONE TIME setup for this test
*/
void
setup()
{
/* capture signals */
tst_sig(FORK, DEF_HANDLER, cleanup);
umask(0);
/* 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;
/* exit with return code appropriate for results */
tst_exit();
}