testcases/kernel/syscalls/getcontext/getcontext01.c

/*
 * Copyright (c) Wipro Technologies Ltd, 2005.  All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 */
/**********************************************************
 *
 *    TEST IDENTIFIER   : getcontext01
 *
 *    EXECUTED BY       : root / superuser
 *
 *    TEST TITLE        : Basic tests for getcontext(2)
 *
 *    TEST CASE TOTAL   : 1
 *
 *    AUTHOR            : Prashant P Yendigeri
 *                        <prashant.yendigeri@wipro.com>
 *
 *    DESCRIPTION
 *      This is a Phase I test for the getcontext(2) system call.
 *      It is intended to provide a limited exposure of the system call.
 *
 **********************************************************/

#include <features.h>
#if !defined(__UCLIBC__)

#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <ucontext.h>

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

void setup();
void cleanup();

char *TCID = "getcontext01";	/* 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[] = { 0 };		/* must be a 0 terminated list */

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

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

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

	/* set the expected errnos... */
	TEST_EXP_ENOS(exp_enos);

	/***************************************************************
     	* check looping state if -c option given
     	***************************************************************/
	for (lc = 0; TEST_LOOPING(lc); lc++) {

		/* reset Tst_count in case we are looping. */
		Tst_count = 0;

		/*
		 * TEST CASE:
		 *  Getcontext
		 */
		;

		/* Call getcontext(2) */
		TEST(getcontext(&ptr));

		/* check return code */
		if (TEST_RETURN == -1) {
			TEST_ERROR_LOG(TEST_ERRNO);
			tst_resm(TFAIL,
				 "getcontext - Sanity test :  Fail errno=%d : %s",
				 TEST_ERRNO, strerror(TEST_ERRNO));
		} else if (TEST_RETURN >= 0) {
			TEST_ERROR_LOG(TEST_ERRNO);
			tst_resm(TPASS, "getcontext - Sanity test : Pass");
		}

	}			/* 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;
}				/* 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;

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

#else /* systems that dont support obsolete getcontext */
int main()
{
	return 0;
}
#endif