testcases/kernel/syscalls/fadvise/posix_fadvise01.c

/*
 *
 *   Copyright (c) Red Hat Inc., 2007
 *
 *   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
 *	posix_fadvise01.c
 *
 * DESCRIPTION
 *	Check the value that posix_fadvise returns for wrong ADVISE value.
 *
 * USAGE
 * 	posix_fadvise01
 *
 * HISTORY
 *	11/2007 Initial version by Masatake YAMATO <yamato@redhat.com>
 *
 * RESTRICTIONS
 * 	None
 */

#define _XOPEN_SOURCE 600
#include <fcntl.h>

#include <unistd.h>
#include <signal.h>
#include <errno.h>

#include "test.h"
#include "usctest.h"

#include "linux_syscall_numbers.h"
#ifndef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 32
#endif

#ifndef __NR_fadvise64
#define __NR_fadvise64 0
#endif

void setup();
void cleanup();


TCID_DEFINE(posix_fadvise01);   /* Test program identifier.    */
extern int Tst_count;		/* Test Case counter for tst_* routines */

char fname[] = "/bin/cat";	/* test executable to open */
int  fd      = -1;		/* initialized in open */

int  expected_return = 0;

int defined_advise[] = {
	POSIX_FADV_NORMAL, 
        POSIX_FADV_SEQUENTIAL, 
        POSIX_FADV_RANDOM, 
        POSIX_FADV_NOREUSE, 
        POSIX_FADV_WILLNEED, 
        POSIX_FADV_DONTNEED,
};
#define defined_advise_total (sizeof(defined_advise) / sizeof(defined_advise[0]))

int TST_TOTAL 	 = defined_advise_total;

int
main(int ac, char **av)
{
	int lc;			/* loop counter */
	char *msg;		/* message returned from parse_opts */
	int i;

       /* Check this system has fadvise64 system which is used 
          in posix_fadvise. */
       if ((_FILE_OFFSET_BITS != 64) && (__NR_fadvise64 == 0)) {
               tst_resm(TWARN, "This test can only run on kernels that implements ");
               tst_resm(TWARN, "fadvise64 which is used from posix_fadvise");
               exit(0);
       }

	/*
	 * parse standard options
	 */
	if ( (msg = parse_opts(ac, av, (option_t *) NULL, NULL)) != (char *) NULL )
	  tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);

	/*
	 * perform global setup for test
	 */
	setup();

	/*
	 * check looping state if -i option given on the command line
	 */
	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 < defined_advise_total; i++) {

			TEST(posix_fadvise(fd, 0, 0, defined_advise[i]));
	
			/* Man page says:
			   "On error, an error number is returned." */
			if (TEST_RETURN == expected_return) {
				tst_resm(TPASS, "call succeeded expectedly");
			} else {
				tst_resm(TFAIL,
					 "unexpected return value - %d : %s, advise %d - "
					 "expected %d", 
					 TEST_RETURN,
					 strerror(TEST_RETURN), 
					 defined_advise[i],
					 expected_return);
			}
		}
	} /* End for TEST_LOOPING */

	/*
	 * cleanup and exit
	 */
	cleanup();

	return 0;
}	/* End main */

/*
 * setup() - performs all ONE TIME setup for this test.
 */
void 
setup()
{
	/* capture signals */
	tst_sig(NOFORK, DEF_HANDLER, cleanup);

	/* Pause if that option was specified */
	TEST_PAUSE;

	fd = open(fname, O_RDONLY);
	if (fd < 0) {
		tst_brkm(TBROK, cleanup, 
			 "Unable to open a file(\"%s\") for test: %s\n",
			 fname,strerror(errno));
	} 
}	/* End setup() */


/*
 * 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;

	if (fd != -1) {
		close(fd);
	}

	/* exit with return code appropriate for results */
	tst_exit();
}	/* End cleanup() */