203 lines
4.6 KiB
C
203 lines
4.6 KiB
C
/*
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*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* NAME
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* wait402.c
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*
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* DESCRIPTION
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* wait402 - check for ECHILD errno when using an illegal pid value
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*
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* ALGORITHM
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* loop if that option was specified
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* issue the system call with an illegal pid value
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* check the errno value
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* issue a PASS message if we get ECHILD
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* otherwise, the tests fails
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* issue a FAIL message
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* break any remaining tests
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* call cleanup
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*
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* USAGE: <for command-line>
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* wait402 [-c n] [-e] [-i n] [-I x] [-p x] [-t]
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* where, -c n : Run n copies concurrently.
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* -e : Turn on errno logging.
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* -i n : Execute test n times.
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* -I x : Execute test for x seconds.
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* -P x : Pause for x seconds between iterations.
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* -t : Turn on syscall timing.
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*
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* History
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* 07/2001 John George
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* -Ported
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*
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* Restrictions
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* none
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*/
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#include "test.h"
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#include "usctest.h"
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#include <errno.h>
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#define _USE_BSD
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#include <sys/types.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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/*
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* See the Makefile for comments about the following preprocessor code.
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*/
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#if defined (__CYGWIN__)
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#define PID_MAX 0xfffffffd
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#else
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#ifndef _LTP_TASKS_H
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#include <linux/threads.h> /* for PID_MAX value - new */
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#else
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#include <linux/tasks.h> /* for PID_MAX value - old */
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#endif
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#endif
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void cleanup(void);
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void setup(void);
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char *TCID= "wait402()";
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int TST_TOTAL = 1;
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extern int Tst_count;
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int exp_enos[] = {10, 0};
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main(int ac, char **av)
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{
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int lc; /* loop counter */
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const char *msg; /* message returned from parse_opts */
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pid_t pid;
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pid_t epid = PID_MAX + 1;
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int status = 1;
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struct rusage *rusage=NULL;
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/* parse standard options */
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if ((msg = parse_opts(ac, av, (option_t *) NULL, NULL)) != (char *) NULL) {
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tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
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}
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setup(); /* global setup */
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/* The following loop checks looping state if -i option given */
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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/* reset Tst_count in case we are looping */
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Tst_count = 0;
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/*
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* Allocate some space for the rusage structure.
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*/
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if ((rusage = (struct rusage *)malloc(sizeof(struct rusage)))
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== NULL) {
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tst_brkm(TBROK, cleanup, "malloc() failed");
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}
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pid = fork();
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if (pid == -1) {
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tst_brkm(TBROK, cleanup, "fork() failed");
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}
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if (pid == 0) { /* this is the child */
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/*
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* sleep for a moment to let us do the test
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*/
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sleep(1);
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exit(0);
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} else { /* this is the parent */
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/*
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* call wait4 with the TEST() macro. epid is set
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* to an illegal positive value. This should give
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* an ECHILD error.
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*/
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TEST(wait4(epid, &status, 0, rusage));
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}
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if (TEST_RETURN == 0) {
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tst_brkm(TFAIL, cleanup, "call failed to produce expected error - errno = %d - %s", TEST_ERRNO, strerror(TEST_ERRNO));
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}
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TEST_ERROR_LOG(TEST_ERRNO);
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switch (TEST_ERRNO) {
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case ECHILD:
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tst_resm(TPASS, "received expected failure - errno = %d - %s",
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TEST_ERRNO, strerror(TEST_ERRNO));
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break;
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default:
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tst_brkm(TFAIL, cleanup, "call failed to produce expected "
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"error - errno = %d - %s", TEST_ERRNO,
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strerror(TEST_ERRNO));
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}
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/*
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* Clean up things in case we are looping.
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*/
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if (pid > 0) {
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wait4(pid, &status, 0, rusage);
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}
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free(rusage);
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rusage = NULL;
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}
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cleanup();
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/*NOTREACHED*/
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}
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/*
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* setup() - performs all the ONE TIME setup for this test.
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*/
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void
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setup(void)
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{
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/* capture signals */
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tst_sig(FORK, DEF_HANDLER, cleanup);
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/* Set up the expected error numbers for -e option */
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TEST_EXP_ENOS(exp_enos);
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/* Pause if that option was specified */
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TEST_PAUSE;
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}
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/*
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* cleanup() - performs all the ONE TIME cleanup for this test at completion
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* or premature exit.
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*/
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void
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cleanup(void)
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{
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/*
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* print timing stats if that option was specified.
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* print errno log if that option was specified.
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*/
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TEST_CLEANUP;
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/* exit with return code appropriate for results */
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tst_exit();
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}
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