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/*
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* NAME
* pipe01.c
*
* DESCRIPTION
* Testcase to check the basic functionality of the pipe(2) syscall:
* Check that both ends of the pipe (both file descriptors) are
* available to a process opening the pipe.
*
* ALGORITHM
* Write a string of characters down a pipe; read the string from the
* other file descriptor. Test passes if both can be done, as reported
* by the number of characters written and read.
*
* USAGE: <for command-line>
* pipe01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
* where, -c n : Run n copies concurrently.
* -f : Turn off functionality Testing.
* -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.
*
* RESTRICITONS
* NONE
*/
#include <errno.h>
#include "test.h"
#include "usctest.h"
const char *TCID = "pipe01";
int TST_TOTAL = 1;
extern int Tst_count;
void setup(void);
void cleanup(void) __attribute__((noreturn));
int
main(int ac, char **av)
{
int lc; /* loop counter */
const char *msg; /* message returned from parse_opts */
int fildes[2]; /* fds for pipe read and write */
char wrbuf[BUFSIZ], rebuf[BUFSIZ];
int red, written; /* no. of chars read/written to pipe */
int greater, length;
char *strcpy();
/* parse standard options */
if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){
tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg);
/*NOTREACHED*/
}
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
/* reset Tst_count in case we are looping */
Tst_count = 0;
TEST(pipe(fildes));
if (TEST_RETURN == -1) {
tst_resm(TFAIL, "pipe() failed unexpectedly - errno %d",
TEST_ERRNO);
continue;
}
if (STD_FUNCTIONAL_TEST) {
strcpy(wrbuf, "abcdefghijklmnopqrstuvwxyz");
length = strlen(wrbuf);
if ((written = write(fildes[1], wrbuf, length)) == -1) {
tst_brkm(TBROK, cleanup, "write() failed");
}
if ((written < 0) || (written > 26)) {
tst_resm(TFAIL, "Condition #1 test failed");
continue;
}
if ((red = read(fildes[0], rebuf, written)) == -1) {
tst_brkm(TBROK, cleanup, "read() failed");
}
if ((red < 0) || (red > written)) {
tst_resm(TFAIL, "Condition #2 test failed");
continue;
}
/* are the strings written and read equal */
if ((greater = memcmp(rebuf, wrbuf, red)) != 0) {
tst_resm(TFAIL, "Condition #3 test failed");
continue;
}
tst_resm(TPASS, "pipe() functionality is correct");
} else {
tst_resm(TPASS, "call succeeded");
}
}
cleanup();
/*NOTREACHED*/
}
/*
* 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;
}
/*
* 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();
}
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