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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
*/
/*
* Test Name: mmap08
*
* Test Description:
* Verify that mmap() fails to map a file creating a mapped region
* when the file specified by file descriptor is not valid.
*
* Expected Result:
* mmap() should fail returning -1 and errno should get set to EBADF.
*
* Algorithm:
* Setup:
* Setup signal handling.
* Pause for SIGUSR1 if option specified.
* Create temporary directory.
*
* Test:
* Loop if the proper options are given.
* Execute system call
* Check return code, if system call failed (return=-1)
* if errno set == expected errno
* Issue sys call fails with expected return value and errno.
* Otherwise,
* Issue sys call fails with unexpected errno.
* Otherwise,
* Issue sys call returns unexpected value.
*
* Cleanup:
* Print errno log and/or timing stats if options given
* Delete the temporary directory(s)/file(s) created.
*
* Usage: <for command-line>
* mmap08 [-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 <fcntl.h>
#include <string.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include "test.h"
#include "usctest.h"
#define TEMPFILE "mmapfile"
const char *TCID="mmap08"; /* Test program identifier. */
int TST_TOTAL=1; /* Total number of test cases. */
extern int Tst_count; /* Test Case counter for tst_* routines */
int exp_enos[]={EBADF, 0};
size_t page_sz; /* system page size */
char *addr; /* addr of memory mapped region */
int fildes = -1; /* file descriptor for temporary file */
void setup(); /* Main setup function of test */
void cleanup(void) __attribute__((noreturn)); /* cleanup function for the test */
int
main(int ac, char **av)
{
int lc; /* loop counter */
const char *msg; /* message returned from parse_opts */
/* Parse standard options given to run the test. */
msg = parse_opts(ac, av, (option_t *) NULL, NULL);
if (msg != (char *) NULL) {
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
tst_exit();
}
/* Perform global setup for test */
setup();
/* set 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;
/*
* Call mmap to map the temporary file 'TEMPFILE'
* which is already closed. so, fildes is not valid.
*/
TEST(mmap(0, page_sz, PROT_WRITE,
MAP_FILE|MAP_SHARED, fildes, 0));
/* Check for the return value of mmap() */
if (TEST_RETURN != (int)MAP_FAILED) {
tst_resm(TFAIL, "mmap() returned invalid value, "
"expected: -1");
/* Unmap the mapped memory */
if (munmap(addr, page_sz) != 0) {
tst_brkm(TBROK, cleanup, "munmap() failed");
}
continue;
}
TEST_ERROR_LOG(TEST_ERRNO);
if (TEST_ERRNO == EBADF) {
tst_resm(TPASS, "mmap() fails, 'fd' is not valid, "
"errno:%d", errno);
} else {
tst_resm(TFAIL, "mmap() fails, 'fd' is not valid, "
"invalid errno:%d", errno);
}
} /* End for TEST_LOOPING */
/* Call cleanup() to undo setup done for the test. */
cleanup();
/*NOTREACHED*/
} /* End main */
/*
* setup() - performs all ONE TIME setup for this test.
* Get the system page size.
* Create a temporary directory and a file under it.
* Write some known data into file and close it.
*/
void
setup()
{
char *tst_buff; /* test buffer to hold known data */
/* capture signals */
tst_sig(NOFORK, DEF_HANDLER, cleanup);
/* Pause if that option was specified */
TEST_PAUSE;
/* Get the system page size */
if ((page_sz = getpagesize()) < 0) {
tst_brkm(TFAIL, NULL,
"getpagesize() fails to get system page size");
tst_exit();
}
if ((tst_buff = (char *)calloc(page_sz, sizeof(char))) == NULL) {
tst_brkm(TFAIL, NULL,
"calloc() failed to allocate space for tst_buff");
tst_exit();
}
/* Fill the test buffer with the known data */
memset(tst_buff, 'A', page_sz);
/* make a temp directory and cd to it */
tst_tmpdir();
/* Creat a temporary file used for mapping */
if ((fildes = open(TEMPFILE, O_WRONLY | O_CREAT, 0666)) < 0) {
tst_brkm(TFAIL, NULL, "open() on %s Failed, errno=%d : %s",
TEMPFILE, errno, strerror(errno));
free(tst_buff);
cleanup();
}
/* Write test buffer contents into temporary file */
if (write(fildes, tst_buff, strlen(tst_buff))
!= (int)strlen(tst_buff)) {
tst_brkm(TFAIL, NULL, "write() on %s Failed, errno=%d : %s",
TEMPFILE, errno, strerror(errno));
free(tst_buff);
cleanup();
}
/* Free the memory allocated for test buffer */
free(tst_buff);
/* Close the temporary file opened for writing */
if (close(fildes) < 0) {
tst_brkm(TFAIL, cleanup, "close() on %s Failed, errno=%d : %s",
TEMPFILE, errno, strerror(errno));
}
}
/*
* cleanup() - performs all ONE TIME cleanup for this test at
* completion or premature exit.
* Remove the temporary directory created.
*/
void
cleanup()
{
/*
* print timing stats if that option was specified.
* print errno log if that option was specified.
*/
TEST_CLEANUP;
if (fildes >= 0)
close (fildes);
/* Remove tmp dir and all files in it */
tst_rmdir();
/* exit with return code appropriate for results */
tst_exit();
}
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