/******************************************************************************/
/* Copyright (c) Crackerjack Project., 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA    */
/*                                                                            */
/******************************************************************************/
/******************************************************************************/
/*                                                                            */
/* File:        rt_sigaction01.c                                              */
/*                                                                            */
/* Description: This tests the rt_sigaction() syscall                         */
/*		rt_sigaction alters an action taken by a process on receipt   */
/* 		of a particular signal. The action is specified by the        */
/*		sigaction structure. The previous action on the signal is     */
/*		saved in oact.sigsetsize should indicate the size of a        */
/*		sigset_t type.                       			      */
/*                                                                            */
/* Usage:  <for command-line>                                                 */
/* rt_sigaction01 [-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.                                */
/*                                                                            */
/* Total Tests: 1                                                             */
/*                                                                            */
/* Test Name:   rt_sigaction01                                             */
/* History:     Porting from Crackerjack to LTP is done by                    */
/*              Manas Kumar Nayak maknayak@in.ibm.com>                        */
/******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <sys/syscall.h>
#include <string.h>

/* Harness Specific Include Files. */
#define LTP_RT_SIG_TEST
#include "test.h"
#include "usctest.h"
#include "linux_syscall_numbers.h"
#include "ltp_signal.h"

/* Extern Global Variables */

/* Global Variables */
char *TCID = "rt_sigaction01";	/* Test program identifier. */
int testno;
int TST_TOTAL = 1;		/* total number of tests in this file.   */

/* Extern Global Functions */
/******************************************************************************/
/*                                                                            */
/* Function:    cleanup                                                       */
/*                                                                            */
/* Description: Performs all one time clean up for this test on successful    */
/*              completion,  premature exit or  failure. Closes all temporary */
/*              files, removes all temporary directories exits the test with  */
/*              appropriate return code by calling tst_exit() function.       */
/*                                                                            */
/* Input:       None.                                                         */
/*                                                                            */
/* Output:      None.                                                         */
/*                                                                            */
/* Return:      On failure - Exits calling tst_exit(). Non '0' return code.   */
/*              On success - Exits calling tst_exit(). With '0' return code.  */
/*                                                                            */
/******************************************************************************/
void cleanup()
{

	TEST_CLEANUP;
	tst_rmdir();

}

/* Local  Functions */
/******************************************************************************/
/*                                                                            */
/* Function:    setup                                                         */
/*                                                                            */
/* Description: Performs all one time setup for this test. This function is   */
/*              typically used to capture signals, create temporary dirs      */
/*              and temporary files that may be used in the course of this    */
/*              test.                                                         */
/*                                                                            */
/* Input:       None.                                                         */
/*                                                                            */
/* Output:      None.                                                         */
/*                                                                            */
/* Return:      On failure - Exits by calling cleanup().                      */
/*              On success - returns 0.                                       */
/*                                                                            */
/******************************************************************************/
void setup()
{
	/* Capture signals if any */
	/* Create temporary directories */
	TEST_PAUSE;
	tst_tmpdir();
}

int test_flags[] =
    { SA_RESETHAND | SA_SIGINFO, SA_RESETHAND, SA_RESETHAND | SA_SIGINFO,
SA_RESETHAND | SA_SIGINFO, SA_NOMASK };
char *test_flags_list[] =
    { "SA_RESETHAND|SA_SIGINFO", "SA_RESETHAND", "SA_RESETHAND|SA_SIGINFO",
"SA_RESETHAND|SA_SIGINFO", "SA_NOMASK" };

void handler(int sig)
{
	tst_resm(TINFO, "Signal Handler Called with signal number %d\n", sig);
	return;
}

int set_handler(int sig, int sig_to_mask, int mask_flags)
{
#ifdef __x86_64__
	struct kernel_sigaction sa, oldaction;
	mask_flags |= SA_RESTORER;
	sa.sa_restorer = restore_rt;
	sa.k_sa_handler = (void *)handler;
#else
	struct sigaction sa, oldaction;
	sa.sa_handler = (void *)handler;
#endif
	sa.sa_flags = mask_flags;
	sigemptyset(&sa.sa_mask);
	sigaddset(&sa.sa_mask, sig);

	return ltp_syscall(__NR_rt_sigaction, sig, &sa, &oldaction, SIGSETSIZE);

}

int main(int ac, char **av)
{
	int signal, flag;
	int lc;
	char *msg;

	if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) {
		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
	}

	setup();

	for (lc = 0; TEST_LOOPING(lc); ++lc) {

		Tst_count = 0;

		for (testno = 0; testno < TST_TOTAL; ++testno) {

			for (signal = SIGRTMIN; signal <= (SIGRTMAX); signal++) {	//signal for 34 to 65

#ifdef __x86_64__
				sig_initial(signal);
#endif

				for (flag = 0;
				     flag <
				     (sizeof(test_flags) /
				      sizeof(test_flags[0])); flag++) {

					TEST(set_handler
					     (signal, 0, test_flags[flag]));

					if (TEST_RETURN == 0) {
						tst_resm(TINFO, "signal: %d ",
							 signal);
						tst_resm(TPASS,
							 "rt_sigaction call succeeded: result = %ld ",
							 TEST_RETURN);
						tst_resm(TINFO,
							 "sa.sa_flags = %s ",
							 test_flags_list[flag]);
						kill(getpid(), signal);
					} else {
						tst_resm(TFAIL | TTERRNO,
							 "rt_sigaction call "
							 "failed");
					}

				}

			}

		}

	}
	cleanup();
	tst_exit();
}