1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * discard inetd service - both stream and dgram based. 29 */ 30 31 #include <sys/types.h> 32 #include <sys/socket.h> 33 #include <unistd.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <netinet/in.h> 37 #include <inetsvc.h> 38 39 40 static void 41 discard_stream(int s, char *argv[]) 42 { 43 char buffer[BUFSIZ]; 44 45 setproctitle("discard", s, argv); 46 while (read(s, buffer, sizeof (buffer)) > 0) 47 ; 48 } 49 50 /* ARGSUSED0 */ 51 static void 52 noop(int s, const struct sockaddr *sap, int sa_size, const void *buf, size_t sz) 53 { 54 } 55 56 int 57 main(int argc, char *argv[]) 58 { 59 opterr = 0; /* disable getopt error msgs */ 60 switch (getopt(argc, argv, "ds")) { 61 case 'd': 62 /* 63 * We don't need to do any work since dg_template consumes the 64 * datagrams for us, and we just ignore them. 65 */ 66 dg_template(noop, STDIN_FILENO, NULL, 0); 67 break; 68 case 's': 69 discard_stream(STDIN_FILENO, argv); 70 break; 71 default: 72 return (1); 73 } 74 75 return (0); 76 } 77