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/* $NetBSD: rump_open_tap.c,v 1.1 2020/09/30 14:43:15 roy Exp $ */
/*
* Copyright (c) 2020 The NetBSD Foundation, Inc.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Roy Marples.
*
* 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 AUTHOR ``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 AUTHOR 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/cdefs.h>
__RCSID("$NetBSD: rump_open_tap.c,v 1.1 2020/09/30 14:43:15 roy Exp $");
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <rump/rump_syscalls.h>
#include <rump/rumpclient.h>
int
main(int argc, char **argv)
{
int fd;
if (argc < 2)
errx(EXIT_FAILURE, "No path specified");
rumpclient_init();
fd = rump_sys_open(argv[1], O_RDWR);
if (fd == -1)
err(EXIT_FAILURE, "open: %s", argv[1]);
if (argc > 2) {
FILE *fp;
pid_t pid;
fp = fopen(argv[2], "w");
if (fp == NULL)
err(EXIT_FAILURE, "fopen: %s", argv[2]);
pid = fork();
switch (pid) {
case -1:
err(EXIT_FAILURE, "fork");
case 0:
break;
default:
fprintf(fp, "%d\n", pid);
exit(EXIT_SUCCESS);
}
}
/* Spin with the fd open */
for (;;)
sleep(100);
}
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