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/*
* mmap001.c - Tests mmapping a big file and writing it once
*
* Copyright (C) 2000 Juan Quintela <quintela@fi.udc.es>
* Aaron Laffin <alaffin@sgi.com>
*
* 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.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <errno.h>
#include <string.h>
#include "test.h"
#include "usctest.h"
const char *TCID="mmap001";
int TST_TOTAL=5;
extern int Tst_count;
static char *filename=NULL;
static int m_opt = 0;
static char *m_copt;
void cleanup()
{
/*
* remove the tmp directory and exit
*/
if ( filename )
free(filename);
TEST_CLEANUP;
tst_rmdir();
tst_exit();
}
void setup()
{
char buf[1024];
/*
* setup a default signal hander and a
* temporary working directory.
*/
tst_sig(FORK, DEF_HANDLER, cleanup);
tst_tmpdir();
TEST_PAUSE;
snprintf(buf,1024,"testfile.%d",getpid());
filename = strdup(buf);
}
void help()
{
printf(" -m x size of mmap in pages (default 1000)\n");
}
/*
* add the -m option whose parameter is the
* pages that should be mapped.
*/
option_t options[] =
{
{ "m:", &m_opt, &m_copt },
{ NULL, NULL, NULL }
};
int main(int argc, char * argv[])
{
char *array;
const char *msg;
int i,lc;
int fd;
int pages,memsize;
if ( (msg=parse_opts(argc, argv, options, help)) != (char *) NULL )
tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
if ( m_opt )
{
memsize = pages = atoi( m_copt );
if (memsize < 1)
{
tst_brkm(TBROK, cleanup, "Invalid arg for -m: %s",m_copt);
}
memsize *= getpagesize(); /* N PAGES */
}
else
{
/*
* default size 1000 pages;
*/
memsize = pages = 1000;
memsize *= getpagesize();
}
tst_resm(TINFO,"mmap()ing file of %u pages or %u bytes", pages,memsize);
setup();
for (lc=0; TEST_LOOPING(lc); lc++)
{
Tst_count=0;
fd = open(filename, O_RDWR | O_CREAT, 0666);
if ((fd == -1))
tst_brkm(TBROK, cleanup, "Problems opening files");
if (lseek(fd, memsize, SEEK_SET) != memsize)
{
close(fd);
tst_brkm(TBROK, cleanup, "Problems doing the lseek: %d: %s",
errno,strerror(errno));
}
if (write(fd,"\0",1) !=1)
{
close(fd);
tst_brkm(TBROK, cleanup, "Problems writing: %d: %s",
errno,strerror(errno));
}
array = mmap(0, memsize, PROT_WRITE, MAP_SHARED,fd,0);
if (array == (char *)MAP_FAILED)
{
tst_resm(TFAIL, "mmap() failed: %d: %s",
errno,strerror(errno));
tst_exit();
}
else
{
tst_resm(TPASS, "mmap() completed successfully.");
}
if ( STD_FUNCTIONAL_TEST )
{
tst_resm(TINFO,"touching mmaped memory");
for(i = 0; i < memsize; i++)
{
array[i] = (char) i;
}
/*
* seems that if the map area was bad, we'd get SEGV, hence we can
* indicate a PASS.
*/
tst_resm(TPASS, "we're still here, mmaped area must be good");
TEST( msync(array, memsize, MS_SYNC) );
if ( TEST_RETURN == -1 )
{
tst_resm(TFAIL, "msync() failed: errno: %d: %s",
TEST_ERRNO, strerror(TEST_ERRNO));
}
else
{
tst_resm(TPASS, "msync() was successful");
}
} /* STD_FUNCTIONAL_TEST */
TEST( munmap(array, memsize) );
if ( TEST_RETURN == -1 )
{
tst_resm(TFAIL, "munmap() failed: errno: %d: %s",
TEST_ERRNO, strerror(TEST_ERRNO));
}
else
{
tst_resm(TPASS, "munmap() was successful");
}
close(fd);
unlink(filename);
}
cleanup();
return 0;
}
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