zerosend.c revision 165982
1/*- 2 * Copyright (c) 2007 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/tools/regression/sockets/zerosend/zerosend.c 165982 2007-01-12 21:49:36Z rwatson $ 27 */ 28 29#include <sys/socket.h> 30#include <sys/stat.h> 31 32#include <netinet/in.h> 33 34#include <arpa/inet.h> 35 36#include <err.h> 37#include <fcntl.h> 38#include <limits.h> 39#include <stdio.h> 40#include <string.h> 41#include <unistd.h> 42 43#define PORT1 10001 44#define PORT2 10002 45 46static void 47try_0send(const char *test, int fd) 48{ 49 ssize_t len; 50 char ch; 51 52 ch = 0; 53 len = send(fd, &ch, 0, 0); 54 if (len < 0) 55 err(-1, "%s: try_0send", test); 56 if (len != 0) 57 errx(-1, "%s: try_0send: returned %d", test, len); 58} 59 60static void 61try_0write(const char *test, int fd) 62{ 63 ssize_t len; 64 char ch; 65 66 ch = 0; 67 len = write(fd, &ch, 0); 68 if (len < 0) 69 err(-1, "%s: try_0write", test); 70 if (len != 0) 71 errx(-1, "%s: try_0write: returned %d", test, len); 72} 73 74static void 75setup_udp(const char *test, int *fdp) 76{ 77 struct sockaddr_in sin; 78 int sock1, sock2; 79 80 bzero(&sin, sizeof(sin)); 81 sin.sin_len = sizeof(sin); 82 sin.sin_family = AF_INET; 83 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 84 85 sin.sin_port = htons(PORT1); 86 sock1 = socket(PF_INET, SOCK_DGRAM, 0); 87 if (sock1 < 0) 88 err(-1, "%s: setup_udp: socket", test); 89 if (bind(sock1, (struct sockaddr *)&sin, sizeof(sin)) < 0) 90 err(-1, "%s: setup_udp: bind(%s, %d)", test, 91 inet_ntoa(sin.sin_addr), PORT1); 92 sin.sin_port = htons(PORT2); 93 if (connect(sock1, (struct sockaddr *)&sin, sizeof(sin)) < 0) 94 err(-1, "%s: setup_udp: bind(%s, %d)", test, 95 inet_ntoa(sin.sin_addr), PORT2); 96 97 sock2 = socket(PF_INET, SOCK_DGRAM, 0); 98 if (sock2 < 0) 99 err(-1, "%s: setup_udp: socket", test); 100 if (bind(sock2, (struct sockaddr *)&sin, sizeof(sin)) < 0) 101 err(-1, "%s: setup_udp: bind(%s, %d)", test, 102 inet_ntoa(sin.sin_addr), PORT2); 103 sin.sin_port = htons(PORT1); 104 if (connect(sock2, (struct sockaddr *)&sin, sizeof(sin)) < 0) 105 err(-1, "%s: setup_udp: bind(%s, %d)", test, 106 inet_ntoa(sin.sin_addr), PORT1); 107 108 fdp[0] = sock1; 109 fdp[1] = sock2; 110} 111 112static void 113setup_tcp(const char *test, int *fdp) 114{ 115 struct sockaddr_in sin; 116 int sock1, sock2, sock3; 117 118 bzero(&sin, sizeof(sin)); 119 sin.sin_len = sizeof(sin); 120 sin.sin_family = AF_INET; 121 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 122 123 /* 124 * First set up the listen socket. 125 */ 126 sin.sin_port = htons(PORT1); 127 sock1 = socket(PF_INET, SOCK_STREAM, 0); 128 if (sock1 < 0) 129 err(-1, "%s: setup_tcp: socket", test); 130 if (bind(sock1, (struct sockaddr *)&sin, sizeof(sin)) < 0) 131 err(-1, "%s: bind(%s, %d)", test, inet_ntoa(sin.sin_addr), 132 PORT1); 133 if (listen(sock1, -1) < 0) 134 err(-1, "%s: listen", test); 135 136 /* 137 * Now connect to it, non-blocking so that we don't deadlock against 138 * ourselves. 139 */ 140 sock2 = socket(PF_INET, SOCK_STREAM, 0); 141 if (sock2 < 0) 142 err(-1, "%s: setup_tcp: socket", test); 143 if (fcntl(sock2, F_SETFL, O_NONBLOCK) < 0) 144 err(-1, "%s: setup_tcp: fcntl(O_NONBLOCK)", test); 145 if (connect(sock2, (struct sockaddr *)&sin, sizeof(sin)) < 0) 146 err(-1, "%s: setup_tcp: connect(%s, %d)", test, 147 inet_ntoa(sin.sin_addr), PORT1); 148 149 /* 150 * Now pick up the connection after sleeping a moment to make sure 151 * there's been time for some packets to go back and forth. 152 */ 153 if (sleep(1) < 0) 154 err(-1, "%s: sleep(1)", test); 155 sock3 = accept(sock1, NULL, NULL); 156 if (sock3 < 0) 157 err(-1, "%s: accept", test); 158 if (sleep(1) < 0) 159 err(-1, "%s: sleep(1)", test); 160 161 close(sock1); 162 fdp[0] = sock2; 163 fdp[1] = sock3; 164} 165 166static void 167setup_udsstream(const char *test, int *fdp) 168{ 169 170 if (socketpair(PF_LOCAL, SOCK_STREAM, 0, fdp) < 0) 171 err(-1, "%s: setup_udsstream: socketpair", test); 172} 173 174static void 175setup_udsdgram(const char *test, int *fdp) 176{ 177 178 if (socketpair(PF_LOCAL, SOCK_DGRAM, 0, fdp) < 0) 179 err(-1, "%s: setup_udsdgram: socketpair", test); 180} 181 182static void 183setup_pipe(const char *test, int *fdp) 184{ 185 186 if (pipe(fdp) < 0) 187 err(-1, "%s: setup_pipe: pipe", test); 188} 189 190static void 191setup_fifo(const char *test, int *fdp) 192{ 193 char path[PATH_MAX]; 194 int fd1, fd2; 195 196 strcpy(path, "/tmp/0send_fifo.XXXXXXX"); 197 if (mktemp(path) == NULL) 198 err(-1, "%s: setup_fifo: mktemp", test); 199 200 if (mkfifo(path, 0600) < 0) 201 err(-1, "%s: setup_fifo: mkfifo(%s)", test, path); 202 203 fd1 = open(path, O_RDONLY | O_NONBLOCK); 204 if (fd1 < 0) 205 err(-1, "%s: setup_fifo: open(%s, O_RDONLY)", test, path); 206 207 fd2 = open(path, O_WRONLY | O_NONBLOCK); 208 if (fd2 < 0) 209 err(-1, "%s: setup_fifo: open(%s, O_WRONLY)", test, path); 210 211 fdp[0] = fd2; 212 fdp[1] = fd1; 213} 214 215static void 216close_both(int *fdp) 217{ 218 219 close(fdp[0]); 220 fdp[0] = -1; 221 close(fdp[1]); 222 fdp[1] = -1; 223} 224 225int 226main(int argc, char *argv[]) 227{ 228 int fd[2]; 229 230 setup_udp("udp_0send", fd); 231 try_0send("udp_0send", fd[0]); 232 close_both(fd); 233 234 setup_udp("udp_0write", fd); 235 try_0write("udp_0write", fd[0]); 236 close_both(fd); 237 238 setup_tcp("tcp_0send", fd); 239 try_0send("tcp_0send", fd[0]); 240 close_both(fd); 241 242 setup_tcp("tcp_0write", fd); 243 try_0write("tcp_0write", fd[0]); 244 close_both(fd); 245 246 setup_udsstream("udsstream_0send", fd); 247 try_0send("udsstream_0send", fd[0]); 248 close_both(fd); 249 250 setup_udsstream("udsstream_0write", fd); 251 try_0write("udsstream_0write", fd[0]); 252 close_both(fd); 253 254 setup_udsdgram("udsdgram_0send", fd); 255 try_0send("udsdgram_0send", fd[0]); 256 close_both(fd); 257 258 setup_udsdgram("udsdgram_0write", fd); 259 try_0write("udsdgram_0write", fd[0]); 260 close_both(fd); 261 262 setup_pipe("pipe_0write", fd); 263 try_0write("pipd_0write", fd[0]); 264 close_both(fd); 265 266 setup_fifo("fifo_0write", fd); 267 try_0write("fifo_0write", fd[0]); 268 close_both(fd); 269 270 return (0); 271} 272