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/* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#include <sys/types.h>
#include <assert.h> /* NO_CHECK_STYLE */
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static
int
h_echo(const char *msg)
{
printf("%s\n", msg);
return EXIT_SUCCESS;
}
static
int
h_exit_failure(void)
{
return EXIT_FAILURE;
}
static
int
h_exit_signal(void)
{
kill(getpid(), SIGKILL);
assert(0); /* NO_CHECK_STYLE */
return EXIT_FAILURE;
}
static
int
h_exit_success(void)
{
return EXIT_SUCCESS;
}
static
int
h_stdout_stderr(const char *id)
{
fprintf(stdout, "Line 1 to stdout for %s\n", id);
fprintf(stdout, "Line 2 to stdout for %s\n", id);
fprintf(stderr, "Line 1 to stderr for %s\n", id);
fprintf(stderr, "Line 2 to stderr for %s\n", id);
return EXIT_SUCCESS;
}
static
void
check_args(const int argc, const char *const argv[], const int required)
{
if (argc < required) {
fprintf(stderr, "Usage: %s helper-name [args]\n", argv[0]);
exit(EXIT_FAILURE);
}
}
int
main(int argc, const char *const argv[])
{
int exitcode;
check_args(argc, argv, 2);
if (strcmp(argv[1], "echo") == 0) {
check_args(argc, argv, 3);
exitcode = h_echo(argv[2]);
} else if (strcmp(argv[1], "exit-failure") == 0)
exitcode = h_exit_failure();
else if (strcmp(argv[1], "exit-signal") == 0)
exitcode = h_exit_signal();
else if (strcmp(argv[1], "exit-success") == 0)
exitcode = h_exit_success();
else if (strcmp(argv[1], "stdout-stderr") == 0) {
check_args(argc, argv, 3);
exitcode = h_stdout_stderr(argv[2]);
} else {
fprintf(stderr, "%s: Unknown helper %s\n", argv[0], argv[1]);
exitcode = EXIT_FAILURE;
}
return exitcode;
}
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