/*
 *
 *   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/*
 * Test Name: listen01
 *
 * Test Description:
 *  Verify that listen() returns the proper errno for various failure cases
 *
 * Usage:  <for command-line>
 *  listen01 [-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.
 *
 * HISTORY
 *	07/2001 Ported by Wayne Boyer
 *
 * RESTRICTIONS:
 *  None.
 *
 */

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

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/signal.h>
#include <sys/un.h>

#include <netinet/in.h>

#include "test.h"

char *TCID = "listen01";
int testno;

int s;				/* socket descriptor */

void setup(void), setup0(void), setup1(void),
cleanup(void), cleanup0(void), cleanup1(void);

struct test_case_t {		/* test case structure */
	int domain;		/* PF_INET, PF_UNIX, ... */
	int type;		/* SOCK_STREAM, SOCK_DGRAM ... */
	int proto;		/* protocol number (usually 0 = default) */
	int backlog;		/* connect's 3rd argument */
	int retval;		/* syscall return value */
	int experrno;		/* expected errno */
	void (*setup) (void);
	void (*cleanup) (void);
	char *desc;
} tdat[] = {
	{
	0, 0, 0, 0, -1, EBADF, setup0, cleanup0, "bad file descriptor"}, {
	0, 0, 0, 0, -1, ENOTSOCK, setup0, cleanup0, "not a socket"}, {
PF_INET, SOCK_DGRAM, 0, 0, -1, EOPNOTSUPP, setup1, cleanup1,
		    "UDP listen"},};

int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]);

int main(int argc, char *argv[])
{
	int lc;
	const char *msg;

	msg = parse_opts(argc, argv, NULL, NULL);
	if (msg != 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) {
			tdat[testno].setup();

			TEST(listen(s, tdat[testno].backlog));
			if (TEST_RETURN != tdat[testno].retval ||
			    (TEST_RETURN < 0 &&
			     TEST_ERRNO != tdat[testno].experrno)) {
				tst_resm(TFAIL, "%s ; returned"
					 " %ld (expected %d), errno %d (expected"
					 " %d)", tdat[testno].desc,
					 TEST_RETURN, tdat[testno].retval,
					 TEST_ERRNO, tdat[testno].experrno);
			} else {
				tst_resm(TPASS, "%s successful",
					 tdat[testno].desc);
			}
			tdat[testno].cleanup();
		}
	}
	cleanup();

	tst_exit();
}

void setup(void)
{
	TEST_PAUSE;
}

void cleanup(void)
{
}

void setup0(void)
{
	if (tdat[testno].experrno == EBADF)
		s = 400;	/* anything not an open file */
	else if ((s = open("/dev/null", O_WRONLY)) == -1)
		tst_brkm(TBROK, cleanup, "error opening /dev/null - "
			 "errno: %s", strerror(errno));
}

void cleanup0(void)
{
	s = -1;
}

void setup1(void)
{
	s = socket(tdat[testno].domain, tdat[testno].type, tdat[testno].proto);
	if (s < 0) {
		tst_brkm(TBROK, cleanup, "socket setup failed for listen: "
			 "%s", strerror(errno));
	}
}

void cleanup1(void)
{
	(void)close(s);
	s = -1;
}