91 lines
3 KiB
C
91 lines
3 KiB
C
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/* $NetBSD: h_spawnattr.c,v 1.1 2012/02/13 21:03:08 martin Exp $ */
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/*-
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* Copyright (c) 2012 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles Zhang <charles@NetBSD.org> and
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* Martin Husemann <martin@NetBSD.org>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <unistd.h>
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/*
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* Helper to test the hardcoded assumptions from t_spawnattr.c
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* Exit with apropriate exit status and print diagnostics to
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* stderr explaining what is wrong.
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*/
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int
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main(int argc, char **argv)
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{
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int parent_pipe, res = EXIT_SUCCESS;
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sigset_t sig;
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struct sigaction act;
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ssize_t rd;
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char tmp;
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sigemptyset(&sig);
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if (sigprocmask(0, NULL, &sig) < 0) {
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fprintf(stderr, "%s: sigprocmask error\n", getprogname());
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res = EXIT_FAILURE;
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}
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if (!sigismember(&sig, SIGUSR1)) {
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fprintf(stderr, "%s: SIGUSR not in procmask\n", getprogname());
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res = EXIT_FAILURE;
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}
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if (sigaction(SIGUSR1, NULL, &act) < 0) {
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fprintf(stderr, "%s: sigaction error\n", getprogname());
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res = EXIT_FAILURE;
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}
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if (act.sa_sigaction != (void *)SIG_DFL) {
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fprintf(stderr, "%s: SIGUSR1 action != SIG_DFL\n",
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getprogname());
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res = EXIT_FAILURE;
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}
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if (argc >= 2) {
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parent_pipe = atoi(argv[1]);
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if (parent_pipe > 2) {
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printf("%s: waiting for command from parent on pipe "
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"%d\n", getprogname(), parent_pipe);
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rd = read(parent_pipe, &tmp, 1);
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if (rd == 1) {
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printf("%s: got command %c from parent\n",
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getprogname(), tmp);
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} else if (rd == -1) {
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printf("%s: %d is no pipe, errno %d\n",
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getprogname(), parent_pipe, errno);
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res = EXIT_FAILURE;
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}
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}
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}
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return res;
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}
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