newlib-cygwin/winsup/testsuite/winsup.api/ltp/exit02.c

229 lines
4.7 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
* exit02.c
*
* DESCRIPTION
* Check that exit flushes output file buffers and closes files upon
* exitting
*
* ALGORITHM
* Fork a process that creates a file and writes a few bytes, and
* calls exit WITHOUT calling close(). The parent then reads the
* file. If everything that was written is present in the file, then
* the test passes.
*
* USAGE
* exit02
*
* HISTORY
* 07/2001 Ported by Wayne Boyer
*
* RESTRICTIONS
* None
*/
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/wait.h>
#include "test.h"
#include "usctest.h"
void cleanup(void) __attribute__((noreturn));
void setup(void);
const char *TCID = "exit02";
int TST_TOTAL = 1;
extern int Tst_count;
#define READ 0
#define WRITE 1
#define MODE 0666
char filen[40];
int
main(int ac, char **av)
{
int pid, npid, sig, nsig, exno, nexno, status;
int filed;
char wbuf[BUFSIZ], rbuf[BUFSIZ];
int len, rlen;
int rval = 0;
char *strcpy();
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*/
}
setup(); /* global setup for test */
/*
* The following loop checks looping state if -i option given
*/
for (lc = 0; TEST_LOOPING(lc); lc++) {
/*
* reset Tst_count in case we are looping.
*/
Tst_count = 0;
strcpy(wbuf, "abcd");
len = strlen(wbuf);
exno = sig = 0;
if ((pid = fork()) == -1) {
tst_brkm(TBROK, cleanup, "fork failed, error no = %d",
errno, strerror(errno));
}
if (pid == 0) { /* child */
sleep(1);
if ((filed = creat(filen, MODE)) == -1) {
tst_resm(TINFO, "creat error: unable to"
"open output file");
exit(2);
}
if (write(filed, wbuf, len) != len) {
tst_resm(TINFO, "write error");
exit(2);
}
close(filed);
exit(exno);
} else { /* parent */
npid = wait(&status);
if (npid != pid) {
tst_resm(TFAIL, "wait error: "
"unexpected pid returned");
rval = 1;
}
nsig = status % 256;
/*
* to 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 %d", nsig);
rval = 1;
}
/*
* nexno is the exit number returned by wait
*/
nexno = status / 256;
if (nexno != exno) {
tst_resm(TFAIL, "wait error: unexpected exit "
"number %d", nexno);
rval = 1;
}
sleep(2); /* let child's exit close opened file */
filed = open(filen, O_RDONLY, READ);
if (filed == -1) {
tst_resm(TFAIL, "open error: "
"unable to open input file");
rval = 1;
} else {
rlen = read(filed, rbuf, len);
if (len != rlen) {
tst_resm(TFAIL, "exit error: file "
"buffer was not flushed");
rval = 1;
} else if (memcmp(rbuf, wbuf, rlen) != 0) {
tst_resm(TFAIL, "exit error: file "
"buffer was not flushed");
rval = 1;
}
}
close(filed);
unlink(filen);
}
if (!rval) {
tst_resm(TPASS, "exit() test PASSED");
}
}
cleanup();
/*NOTREACHED*/
}
/*
* setup() - perform all ONE TIME setup for this test
*/
void
setup(void)
{
/* capture signals */
tst_sig(FORK, DEF_HANDLER, cleanup);
umask(0);
/* Pause if that option was specified */
TEST_PAUSE;
/* make a temp directory and cd to it */
tst_tmpdir();
sprintf(filen, "tfile_%d",getpid());
}
/*
* cleanup() - performs all ONE TIME cleanup for this test at completion or
* premature exit.
*/
void
cleanup(void)
{
/*
* print timing stats if that option was specified.
* print errno log if that option was specified
*/
TEST_CLEANUP;
/*
* Remove tmp dir and all files in it
*/
tst_rmdir();
/*
* exit with return code appropriate for results
*/
tst_exit();
}