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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * discard inetd service - both stream and dgram based. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/socket.h> 35 #include <unistd.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <netinet/in.h> 39 #include <inetsvc.h> 40 41 42 static void 43 discard_stream(int s, char *argv[]) 44 { 45 char buffer[BUFSIZ]; 46 47 setproctitle("discard", s, argv); 48 while (read(s, buffer, sizeof (buffer)) > 0) 49 ; 50 } 51 52 /* ARGSUSED0 */ 53 static void 54 noop(int s, const struct sockaddr *sap, int sa_size, const void *buf, size_t sz) 55 { 56 } 57 58 int 59 main(int argc, char *argv[]) 60 { 61 opterr = 0; /* disable getopt error msgs */ 62 switch (getopt(argc, argv, "ds")) { 63 case 'd': 64 /* 65 * We don't need to do any work since dg_template consumes the 66 * datagrams for us, and we just ignore them. 67 */ 68 dg_template(noop, STDIN_FILENO, NULL, 0); 69 break; 70 case 's': 71 discard_stream(STDIN_FILENO, argv); 72 break; 73 default: 74 return (1); 75 } 76 77 return (0); 78 } 79