237 lines
6.3 KiB
C
237 lines
6.3 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
|
|
*/
|
|
|
|
/*
|
|
* Test Name: mmap07
|
|
*
|
|
* Test Description:
|
|
* Call mmap() to map a file creating a mapped region with read access
|
|
* under the following conditions -
|
|
* - The prot parameter is set to PROT_WRITE
|
|
* - The file descriptor is open for writing.
|
|
* - The flags parameter has MAP_PRIVATE set.
|
|
*
|
|
* The call should fail to map the file.
|
|
*
|
|
* Expected Result:
|
|
* mmap() should fail returning -1 and errno should get set to EACCES.
|
|
*
|
|
* 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>
|
|
* mmap07 [-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 <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <errno.h>
|
|
#include <unistd.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"
|
|
|
|
char *TCID="mmap07"; /* 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[]={EACCES, 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(); /* 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'
|
|
* with write access.
|
|
*/
|
|
TEST(mmap(0, page_sz, PROT_WRITE,
|
|
MAP_FILE|MAP_PRIVATE, 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 == EACCES) {
|
|
tst_resm(TPASS, "mmap() fails, 'fd' doesn't allow "
|
|
"desired access, errno:%d", errno);
|
|
} else {
|
|
tst_resm(TFAIL, "mmap() fails, 'fd' doesn't allow "
|
|
"desired access, 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.
|
|
*/
|
|
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();
|
|
}
|
|
|
|
/* Allocate space for the test buffer */
|
|
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)) < 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);
|
|
}
|
|
|
|
/*
|
|
* cleanup() - performs all ONE TIME cleanup for this test at
|
|
* completion or premature exit.
|
|
* Remove the temporary directory created.
|
|
*/
|
|
void
|
|
cleanup()
|
|
{
|
|
/*
|
|
* 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();
|
|
}
|