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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <smbsrv/smb_kproto.h> 27 28 /* 29 * The echo request is used to test the connection to the server, 30 * and to see if the server is still responding. The tid is ignored, 31 * so this request may be sent to the server even if there are no 32 * tree connections to the server. 33 * 34 * Each response echoes the data sent, though ByteCount may indicate 35 * no data. If echo-count is zero, no response is sent. 36 */ 37 smb_sdrc_t 38 smb_pre_echo(smb_request_t *sr) 39 { 40 DTRACE_SMB_1(op__Echo__start, smb_request_t *, sr); 41 return (SDRC_SUCCESS); 42 } 43 44 void 45 smb_post_echo(smb_request_t *sr) 46 { 47 DTRACE_SMB_1(op__Echo__done, smb_request_t *, sr); 48 } 49 50 smb_sdrc_t 51 smb_com_echo(struct smb_request *sr) 52 { 53 unsigned short necho; 54 unsigned short nbytes; 55 unsigned short i; 56 struct mbuf_chain reply; 57 char *data; 58 59 if (smbsr_decode_vwv(sr, "w", &necho) != 0) 60 return (SDRC_ERROR); 61 62 nbytes = sr->smb_bcc; 63 data = smb_srm_alloc(sr, nbytes); 64 65 if (smb_mbc_decodef(&sr->smb_data, "#c", nbytes, data)) 66 return (SDRC_ERROR); 67 68 for (i = 1; i <= necho; ++i) { 69 MBC_INIT(&reply, SMB_HEADER_ED_LEN + 10 + nbytes); 70 71 (void) smb_mbc_encodef(&reply, SMB_HEADER_ED_FMT, 72 sr->first_smb_com, 73 sr->smb_rcls, 74 sr->smb_reh, 75 sr->smb_err, 76 sr->smb_flg | SMB_FLAGS_REPLY, 77 sr->smb_flg2, 78 sr->smb_pid_high, 79 sr->smb_sig, 80 sr->smb_tid, 81 sr->smb_pid, 82 sr->smb_uid, 83 sr->smb_mid); 84 85 (void) smb_mbc_encodef(&reply, "bww#c", 1, i, 86 nbytes, nbytes, data); 87 88 if (sr->session->signing.flags & SMB_SIGNING_ENABLED) 89 smb_sign_reply(sr, &reply); 90 91 (void) smb_session_send(sr->session, 0, &reply); 92 } 93 94 return (SDRC_NO_REPLY); 95 } 96