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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
* creat01.c
*
* DESCRIPTION
* Testcase to check the basic functionality of the creat(2) system call.
*
* ALGORITHM
* 1. creat() a file using 0444 mode, write to the fildes, write
* should return a positive count.
*
* 2. creat() should truncate a file to 0 bytes if it already
* exists, and should not fail.
*
* USAGE: <for command-line>
* creat01 [-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 <fcntl.h>
#include <sys/stat.h>
#include <errno.h>
#include "test.h"
#include "usctest.h"
void setup(void);
void cleanup(void) __attribute__((noreturn));
void functest1(void);
void functest2(void);
const char *TCID = "creat01";
int TST_TOTAL = 2;
extern int Tst_count;
char filename[40];
#define MODE1 0644
#define MODE2 0444
struct test_case_t {
char *fname;
int mode;
void (*functest)();
} TC[] = {
/* creat() the file and write to it */
{filename, MODE1, functest1},
/* creat() the same file and check that it is now 0 length */
{filename, MODE2, functest2}
};
int
main(int ac, char **av)
{
int i;
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, tst_exit, "OPTION PARSING ERROR - %s", msg);
}
setup(); /* set "tstdir", and "testfile" variables */
/* 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(creat(filename, TC[i].mode));
if (TEST_RETURN == -1) {
tst_resm(TFAIL, "Could not creat file %s",
filename);
continue;
}
if (STD_FUNCTIONAL_TEST) {
(*TC[i].functest)();
} else {
tst_resm(TPASS, "call succeeded");
}
if (TEST_RETURN >= 0) {
close(TEST_RETURN);
}
}
}
cleanup();
/*NOTREACHED*/
}
/*
* functest1() - check the functionality of the first test by making sure
* that a write to the file succeeds
*/
void
functest1()
{
if (write(TEST_RETURN, "A", 1) != 1) {
tst_resm(TFAIL, "write was unsuccessful");
} else {
tst_resm(TPASS, "file was created and written to successfully");
}
}
/*
* functest2() - check the functionality of the second test by making sure
* that the file is now 0 length
*/
void
functest2()
{
struct stat buf;
if (stat(filename, &buf) < 0) {
tst_brkm(TBROK, cleanup, "failed to stat test file");
/*NOTREACHED*/
}
if (buf.st_size != 0) {
tst_resm(TFAIL, "creat() FAILED to truncate "
"file to zero bytes");
} else {
tst_resm(TPASS, "creat() truncated existing file to 0 bytes");
}
}
/*
* setup() - performs all ONE TIME setup for this test
*/
void
setup()
{
if (geteuid() == 0) {
tst_brkm(TBROK, tst_exit, "Must not run this as root");
/*NOTREACHED*/
}
/* capture signals */
tst_sig(NOFORK, DEF_HANDLER, cleanup);
umask(0);
/* Pause if that option was specified */
TEST_PAUSE;
tst_tmpdir();
sprintf(filename, "creat01.%d", getpid());
}
/*
* 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;
unlink(filename);
/* delete the test directory created in setup() */
tst_rmdir();
/* exit with return code appropriate for results */
tst_exit();
}
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