133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/* $NetBSD: h_exec.c,v 1.6 2011/02/16 17:57:44 pooka Exp $ */
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/*
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* Copyright (c) 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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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
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* 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
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <rump/rumpclient.h>
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#include <rump/rump_syscalls.h>
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int
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main(int argc, char *argv[])
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{
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struct sockaddr_in sin;
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socklen_t slen;
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int s1, s2;
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char buf[12];
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char *eargv[4];
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char *ename;
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extern char **environ;
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if (rumpclient_init() == -1)
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err(1, "init");
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if (argc > 1) {
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if (strcmp(argv[1], "_didexec") == 0) {
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rumpclient_daemon(0, 0); /* detach-me-notnot */
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s2 = atoi(argv[2]);
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slen = sizeof(sin);
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/* see below */
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rump_sys_accept(s2, (struct sockaddr *)&sin, &slen);
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}
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}
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/* open and listenize two TCP4 suckets */
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if ((s1 = rump_sys_socket(PF_INET, SOCK_STREAM, 0)) == -1)
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err(1, "socket 1");
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if ((s2 = rump_sys_socket(PF_INET, SOCK_STREAM, 0)) == -1)
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err(1, "socket 2");
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memset(&sin, 0, sizeof(sin));
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sin.sin_len = sizeof(sin);
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sin.sin_family = AF_INET;
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sin.sin_port = htons(1234);
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if (rump_sys_bind(s1, (struct sockaddr *)&sin, sizeof(sin)) == -1)
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err(1, "bind1");
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sin.sin_port = htons(2345);
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if (rump_sys_bind(s2, (struct sockaddr *)&sin, sizeof(sin)) == -1)
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err(1, "bind2");
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if (rump_sys_listen(s1, 1) == -1)
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err(1, "listen1");
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if (rump_sys_listen(s2, 1) == -1)
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err(1, "listen2");
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if (argc == 1) {
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rumpclient_daemon(0, 0);
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slen = sizeof(sin);
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/*
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* "pause()", but conveniently gets rid of this helper
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* since we were called with RUMPCLIENT_RETRYCONN_DIE set
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*/
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rump_sys_accept(s2, (struct sockaddr *)&sin, &slen);
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}
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if (argc == 3 && strcmp(argv[2], "cloexec1") == 0) {
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if (rump_sys_fcntl(s1, F_SETFD, FD_CLOEXEC) == -1) {
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err(1, "cloexec failed");
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}
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}
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sprintf(buf, "%d", s2);
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if (argc == 3 && strcmp(argv[2], "vfork_please") == 0) {
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switch (rumpclient_vfork()) {
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case 0:
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ename = __UNCONST("fourchette");
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break;
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case -1:
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err(1, "vfork");
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default:
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ename = __UNCONST("h_ution");
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break;
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}
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} else {
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ename = __UNCONST("h_ution");
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}
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/* omstart! */
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eargv[0] = ename;
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eargv[1] = __UNCONST("_didexec");
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eargv[2] = buf;
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eargv[3] = NULL;
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if (rumpclient_exec(argv[1], __UNCONST(eargv), environ) == -1)
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err(1, "exec");
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}
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