/*
 * 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., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, 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: execv01.c,v 1.3 2003/01/24 01:09:39 cgf Exp $ */
/**********************************************************
 * 
 *    OS Test - Silicon Graphics, Inc.
 * 
 *    TEST IDENTIFIER	: execv01
 * 
 *    EXECUTED BY	: anyone
 * 
 *    TEST TITLE	: Basic test for execv(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.) execv(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 execv(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
 *	execv(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 <errno.h>
#include <signal.h>

#include <sys/types.h>
#include <sys/wait.h>

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

extern void setup();
void cleanup();

const char *TCID="execv01";		/* Test program identifier.    */
int TST_TOTAL=1;		/* Total number of test cases. */
extern int Tst_count;		/* Test Case counter for tst_* routines */
extern int Tst_nobuf;		/* used to turn off buffering in tst_ routines */

int exp_enos[]={0, 0};		/* Zero terminated list of expected errnos */

int pid;		/* process id from fork */
int status;		/* status returned from waitpid */
const char * const args[2]={"/usr/bin/test", 0};	/* argument list for execv call */

int
main(int ac, char **av)
{
    int lc;		/* loop counter */
    const char *msg;		/* message returned from parse_opts */
    
    Tst_nobuf=1;	/* turn off buffering in tst_ routines */

    /***************************************************************
     * 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();

    /* 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:
	 *   fork, then call execv from child 
	 */
	switch(pid=fork()) {
	case 0: 	/* CHILD - Call execv(2) */
	    execv("/usr/bin/test", args);
	    /* should not get here!! if we do, the parent will fail the Test Case */
	    exit(errno);	
	case -1:	/* ERROR!!! exit now!!*/
	    tst_brkm(TBROK, cleanup, 
			"Unable to fork a child process to exec over!  Errno:%d,:%s",
			errno, strerror(errno));
	    break;
	default:
	    waitpid(pid, &status, 0);
	    if ( WIFEXITED(status) ) {
		/***************************************************************
		 * only perform functional verification if flag set (-f not given)
		 ***************************************************************/
		if ( STD_FUNCTIONAL_TEST ) {
		    /* No Verification test, yet... */
		    tst_resm(TPASS, "execv - properly exec's a simple program..");
		} 
	    } else {
		TEST_ERROR_LOG(WEXITSTATUS(status));
		tst_resm(TFAIL, "Child process did not terminate properly, status=%d", status);
	    }
	    break;
	}	/* switch */

    }	/* 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(FORK, DEF_HANDLER, cleanup);

    /* make a temp dir and cd to it */
    tst_tmpdir();
    
    /*
     * Send out info message that timing and errnolog info is not
     * available because of the use of a child process for each exec
     */
    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 execv.\n\
The TEST macro is NOT used.");


    /* 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;

    /* remove files and temp dir */
    tst_rmdir();

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


