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/* $NetBSD: h_exec.c,v 1.6 2011/02/16 17:57:44 pooka Exp $ */
/*
* Copyright (c) 2011 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 <sys/socket.h>
#include <netinet/in.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <rump/rumpclient.h>
#include <rump/rump_syscalls.h>
int
main(int argc, char *argv[])
{
struct sockaddr_in sin;
socklen_t slen;
int s1, s2;
char buf[12];
char *eargv[4];
char *ename;
extern char **environ;
if (rumpclient_init() == -1)
err(1, "init");
if (argc > 1) {
if (strcmp(argv[1], "_didexec") == 0) {
rumpclient_daemon(0, 0); /* detach-me-notnot */
s2 = atoi(argv[2]);
slen = sizeof(sin);
/* see below */
rump_sys_accept(s2, (struct sockaddr *)&sin, &slen);
}
}
/* open and listenize two TCP4 suckets */
if ((s1 = rump_sys_socket(PF_INET, SOCK_STREAM, 0)) == -1)
err(1, "socket 1");
if ((s2 = rump_sys_socket(PF_INET, SOCK_STREAM, 0)) == -1)
err(1, "socket 2");
memset(&sin, 0, sizeof(sin));
sin.sin_len = sizeof(sin);
sin.sin_family = AF_INET;
sin.sin_port = htons(1234);
if (rump_sys_bind(s1, (struct sockaddr *)&sin, sizeof(sin)) == -1)
err(1, "bind1");
sin.sin_port = htons(2345);
if (rump_sys_bind(s2, (struct sockaddr *)&sin, sizeof(sin)) == -1)
err(1, "bind2");
if (rump_sys_listen(s1, 1) == -1)
err(1, "listen1");
if (rump_sys_listen(s2, 1) == -1)
err(1, "listen2");
if (argc == 1) {
rumpclient_daemon(0, 0);
slen = sizeof(sin);
/*
* "pause()", but conveniently gets rid of this helper
* since we were called with RUMPCLIENT_RETRYCONN_DIE set
*/
rump_sys_accept(s2, (struct sockaddr *)&sin, &slen);
}
if (argc == 3 && strcmp(argv[2], "cloexec1") == 0) {
if (rump_sys_fcntl(s1, F_SETFD, FD_CLOEXEC) == -1) {
err(1, "cloexec failed");
}
}
sprintf(buf, "%d", s2);
if (argc == 3 && strcmp(argv[2], "vfork_please") == 0) {
switch (rumpclient_vfork()) {
case 0:
ename = __UNCONST("fourchette");
break;
case -1:
err(1, "vfork");
default:
ename = __UNCONST("h_ution");
break;
}
} else {
ename = __UNCONST("h_ution");
}
/* omstart! */
eargv[0] = ename;
eargv[1] = __UNCONST("_didexec");
eargv[2] = buf;
eargv[3] = NULL;
if (rumpclient_exec(argv[1], __UNCONST(eargv), environ) == -1)
err(1, "exec");
}
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