tests/lib/librumpclient/h_exec.c

   1 /*      $NetBSD: h_exec.c,v 1.6 2011/02/16 17:57:44 pooka Exp $ */
   2
   3 /*
   4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  17  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  18  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <sys/types.h>
  31 #include <sys/socket.h>
  32
  33 #include <netinet/in.h>
  34
  35 #include <err.h>
  36 #include <errno.h>
  37 #include <fcntl.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42
  43 #include <rump/rumpclient.h>
  44 #include <rump/rump_syscalls.h>
  45
  46 int
  47 main(int argc, char *argv[])
  48 {
  49         struct sockaddr_in sin;
  50         socklen_t slen;
  51         int s1, s2;
  52         char buf[12];
  53         char *eargv[4];
  54         char *ename;
  55         extern char **environ;
  56
  57         if (rumpclient_init() == -1)
  58                 err(1, "init");
  59
  60         if (argc > 1) {
  61                 if (strcmp(argv[1], "_didexec") == 0) {
  62                         rumpclient_daemon(0, 0); /* detach-me-notnot */
  63                         s2 = atoi(argv[2]);
  64                         slen = sizeof(sin);
  65                         /* see below */
  66                         rump_sys_accept(s2, (struct sockaddr *)&sin, &slen);
  67                 }
  68         }
  69
  70         /* open and listenize two TCP4 suckets */
  71         if ((s1 = rump_sys_socket(PF_INET, SOCK_STREAM, 0)) == -1)
  72                 err(1, "socket 1");
  73         if ((s2 = rump_sys_socket(PF_INET, SOCK_STREAM, 0)) == -1)
  74                 err(1, "socket 2");
  75
  76         memset(&sin, 0, sizeof(sin));
  77         sin.sin_len = sizeof(sin);
  78         sin.sin_family = AF_INET;
  79         sin.sin_port = htons(1234);
  80
  81         if (rump_sys_bind(s1, (struct sockaddr *)&sin, sizeof(sin)) == -1)
  82                 err(1, "bind1");
  83         sin.sin_port = htons(2345);
  84         if (rump_sys_bind(s2, (struct sockaddr *)&sin, sizeof(sin)) == -1)
  85                 err(1, "bind2");
  86
  87         if (rump_sys_listen(s1, 1) == -1)
  88                 err(1, "listen1");
  89         if (rump_sys_listen(s2, 1) == -1)
  90                 err(1, "listen2");
  91
  92         if (argc == 1) {
  93                 rumpclient_daemon(0, 0);
  94                 slen = sizeof(sin);
  95                 /*
  96                  * "pause()", but conveniently gets rid of this helper
  97                  * since we were called with RUMPCLIENT_RETRYCONN_DIE set
  98                  */
  99                 rump_sys_accept(s2, (struct sockaddr *)&sin, &slen);
 100         }
 101
 102         if (argc == 3 && strcmp(argv[2], "cloexec1") == 0) {
 103                 if (rump_sys_fcntl(s1, F_SETFD, FD_CLOEXEC) == -1) {
 104                         err(1, "cloexec failed");
 105                 }
 106         }
 107
 108         sprintf(buf, "%d", s2);
 109
 110         if (argc == 3 && strcmp(argv[2], "vfork_please") == 0) {
 111                 switch (rumpclient_vfork()) {
 112                 case 0:
 113                         ename = __UNCONST("fourchette");
 114                         break;
 115                 case -1:
 116                         err(1, "vfork");
 117                 default:
 118                         ename = __UNCONST("h_ution");
 119                         break;
 120                 }
 121         } else {
 122                 ename = __UNCONST("h_ution");
 123         }
 124
 125         /* omstart! */
 126         eargv[0] = ename;
 127         eargv[1] = __UNCONST("_didexec");
 128         eargv[2] = buf;
 129         eargv[3] = NULL;
 130         if (rumpclient_exec(argv[1], __UNCONST(eargv), environ) == -1)
 131                 err(1, "exec");
 132 }