testcases/kernel/syscalls/execl/execl01.c

/*
 * Copyright (c) 2000 Silicon Graphics, Inc.  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.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/
 *
 */
/* $Id: execl01.c,v 1.6 2009/03/23 13:35:40 subrata_modak Exp $ */
/**********************************************************
 *
 *    OS Test - Silicon Graphics, Inc.
 *
 *    TEST IDENTIFIER	: execl01
 *
 *    EXECUTED BY	: anyone
 *
 *    TEST TITLE	: Basic test for execl(2)
 *
 *    PARENT DOCUMENT	: usctpl01
 *
 *    TEST CASE TOTAL	: 1
 *
 *    WALL CLOCK TIME	: 1
 *
 *    CPU TYPES		: ALL
 *
 *    AUTHOR		: William Roske
 *
 *    CO-PILOT		: Dave Fenner
 *
 *    DATE STARTED	: 06/01/02
 *
 *    INITIAL RELEASE	: UNICOS 7.0
 *
 *    TEST CASES
 *
 * 	1.) execl(2) returns...(See Description)
 *
 *    INPUT SPECIFICATIONS
 * 	The standard options for system call tests are accepted.
 *	(See the parse_opts(3) man page).
 *
 *    OUTPUT SPECIFICATIONS
 *$
 *    DURATION
 * 	Terminates - with frequency and infinite modes.
 *
 *    SIGNALS
 * 	Uses SIGUSR1 to pause before test if option set.
 * 	(See the parse_opts(3) man page).
 *
 *    RESOURCES
 * 	None
 *
 *    ENVIRONMENTAL NEEDS
 *      No run-time environmental needs.
 *
 *    SPECIAL PROCEDURAL REQUIREMENTS
 * 	None
 *
 *    INTERCASE DEPENDENCIES
 * 	None
 *
 *    DETAILED DESCRIPTION
 *	This is a Phase I test for the execl(2) system call.  It is intended
 *	to provide a limited exposure of the system call, for now.  It
 *	should/will be extended when full functional tests are written for
 *	execl(2).
 *
 * 	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)
 *		Log the errno and Issue a FAIL message.
 *	  Otherwise, Issue a PASS message.
 *
 * 	Cleanup:
 * 	  Print errno log and/or timing stats if options given
 *
 *
 *#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#**/

#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <stdlib.h>

#include "test.h"

void setup();
void cleanup();

char *TCID = "execl01";
int TST_TOTAL = 1;

pid_t pid;			/* process id from fork */
int status;			/* status returned from waitpid */

int main(int ac, char **av)
{
	int lc;
	const 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;

		/*
		 * TEST CASE:
		 *   fork, then call execl from child
		 */
		switch (pid = FORK_OR_VFORK()) {
		case 0:	/* CHILD - Call execl(2) */
			execl("test", "test", NULL);
			/*
			 * should not get here!! if we do, the parent will fail
			 * the Test Case
			 */
			exit(errno);
		case -1:
			tst_brkm(TBROK | TERRNO, cleanup, "fork failed");
			break;
		default:
			if (waitpid(pid, &status, 0) == -1)
				tst_brkm(TBROK | TERRNO, cleanup,
					 "waitpid failed");
			if (WIFEXITED(status)) {
				tst_resm(TPASS,
					 "execl - properly exec's a simple "
					 "program..");
			} else {
				tst_resm(TFAIL,
					 "child exited abnormally; wait status=%d",
					 status);
			}
		}

	}

	tst_exit();
}

void setup(void)
{

	tst_sig(FORK, DEF_HANDLER, cleanup);

	if (STD_TIMING_ON)
		tst_resm(TINFO,
			 "There are NO timing statistics produced by this test.\n"
			 "This is because the test forks to create a child process "
			 "which then calls execl.\nThe TEST macro is NOT used.");

	TEST_PAUSE;

	tst_tmpdir();

}

void cleanup(void)
{
	tst_rmdir();
}