/*
 *   Copyright (C) Bull S.A. 2001
 *   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: setgroups04
 *
 * Test Description:
 *  Verify that, setgroups() fails with -1 and sets errno to EFAULT if the list has an invalid address.
 *
 * Expected Result:
 *  setgroups() should fail with return value -1 and set expected errno.
 *
 * Algorithm:
 *  Setup:
 *   Setup signal handling.
 *   Pause for SIGUSR1 if option specified.
 *
 *  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
 *
 * Usage:  <for command-line>
 *  setgroups04 [-c n] [-e] [-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
 *	05/2002 Ported by André Merlier
 *
 * RESTRICTIONS:
 *  none.
 *
 */
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <pwd.h>
#include <grp.h>

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

#include "compat_16.h"

TCID_DEFINE(setgroups04);	/* Test program identifier.    */
int TST_TOTAL = 1;
extern int Tst_count;		/* Test Case counter for tst_* routines */

GID_T groups_list[NGROUPS];	/* Array to hold gids for getgroups() */
int exp_enos[] = {EFAULT, 0};

void setup();			/* setup function for the test */
void cleanup();			/* cleanup function for the test */

#if !defined(UCLINUX)

int
main(int ac, char **av)
{ 
	int lc;			/* loop counter */
	char *msg;		/* message returned from parse_opts */
	int gidsetsize;		/* total no. of groups */
	char *test_desc;        /* test specific error message */
	
	/* Parse standard options given to run the test. */
	msg = parse_opts(ac, av, (option_t *)NULL, NULL);
	if (msg != (char *)NULL) {
		tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg);
	}

	/* Perform 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;

		gidsetsize = NGROUPS;
		test_desc = "EFAULT";
					
		/*
		 * Call setgroups() to test condition
		 * verify that it fails with -1 return value and
		 * sets appropriate errno.
		 */ 
		 TEST(SETGROUPS(gidsetsize,sbrk(0)));
		/* check return code of setgroups */
		if (TEST_RETURN != -1) {
			tst_resm(TFAIL, "setgroups() returned %d, "
				 "expected -1, errno=%d", TEST_RETURN,
				 exp_enos);
		}
		else{
		
			TEST_ERROR_LOG(TEST_ERRNO);
			
			if (TEST_ERRNO == exp_enos[0]) {
				tst_resm(TPASS, "setgroups() fails with expected "
				"error EFAULT errno:%d",TEST_ERRNO);
			} else {
				tst_resm(TFAIL, "setgroups() fails, %s, "
					 "errno=%d, expected errno=%d",
					 test_desc, TEST_ERRNO,
					 exp_enos[0]);
			}
		}

	}	/* End for TEST_LOOPING */

	/* Call cleanup() */
	cleanup();

	/*NOTREACHED*/
	return(0);
}

#else

int main()
{
	tst_resm(TINFO, "test is not available on uClinux");
	return 0;
}

#endif /* if !defined(UCLINUX) */

/*
 * setup()
 */
void 
setup()
{

	/* check root user */
        if (geteuid() != 0) {
                tst_brkm(TBROK, tst_exit, "Test must be run as root");
        }
         
	/* capture signals */
	tst_sig(NOFORK, DEF_HANDLER, cleanup);

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

}
/*
 * cleanup()
 */
void 
cleanup()
{
	/*
	 * print timing stats if that option was specified.
	 */
	TEST_CLEANUP;

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