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 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * Copyright 2018 Nexenta Systems, Inc. All rights reserved. 27 */ 28 29 /* 30 * Functions called by the IO deamon (IOD). 31 * Here in the library to simplify testing. 32 */ 33 34 #include <errno.h> 35 #include <fcntl.h> 36 #include <stdio.h> 37 #include <string.h> 38 #include <stdlib.h> 39 #include <unistd.h> 40 #include <libintl.h> 41 42 #include <sys/byteorder.h> 43 #include <sys/types.h> 44 #include <sys/fcntl.h> 45 #include <sys/ioctl.h> 46 #include <sys/time.h> 47 #include <sys/socket.h> 48 49 #include <netinet/in.h> 50 #include <netinet/tcp.h> 51 #include <arpa/inet.h> 52 53 #include <netsmb/smb.h> 54 #include <netsmb/smb_lib.h> 55 #include <netsmb/netbios.h> 56 #include <netsmb/nb_lib.h> 57 #include <netsmb/smb_dev.h> 58 59 #include "charsets.h" 60 #include "private.h" 61 62 /* 63 * The user agent (smbiod) calls smb_iod_connect for the first 64 * connection to some server, and if that succeeds, will start a 65 * thread running this function, passing the smb_ctx_t 66 * 67 * This thread now enters the driver and stays there, reading 68 * network responses as long as the connection is alive. 69 */ 70 int 71 smb_iod_work(smb_ctx_t *ctx) 72 { 73 smbioc_ssn_work_t *work = &ctx->ct_work; 74 int err = 0; 75 76 DPRINT("server: %s", ctx->ct_srvname); 77 78 /* 79 * This is the reader / reconnect loop. 80 * 81 * We could start with state "idle", but 82 * we know someone wants a connection to 83 * this server, so start in "vcactive". 84 * 85 * XXX: Add some syslog calls in here? 86 */ 87 88 for (;;) { 89 90 DPRINT("state: %s", 91 smb_iod_state_name(work->wk_out_state)); 92 93 switch (work->wk_out_state) { 94 case SMBIOD_ST_IDLE: 95 /* 96 * Wait for driver requests to arrive 97 * for this VC, then return here. 98 * Next state is normally RECONNECT. 99 */ 100 DPRINT("Call _ioc_idle..."); 101 if (nsmb_ioctl(ctx->ct_dev_fd, 102 SMBIOC_IOD_IDLE, work) == -1) { 103 err = errno; 104 DPRINT("ioc_idle: err %d", err); 105 goto out; 106 } 107 DPRINT("Ret. from _ioc_idle"); 108 continue; 109 110 case SMBIOD_ST_RECONNECT: 111 DPRINT("Call _iod_connect..."); 112 err = smb_iod_connect(ctx); 113 if (err == 0) 114 continue; 115 DPRINT("iod_connect: err %d", err); 116 /* 117 * If the error was EAUTH, retry is 118 * not likely to succeed either, so 119 * just exit this thread. The user 120 * will need to run smbutil to get 121 * a new thread with new auth info. 122 */ 123 if (err == EAUTH) { 124 DPRINT("iod_connect: EAUTH (give up)"); 125 goto out; 126 } 127 /* 128 * Reconnect failed. Notify any requests 129 * that we're not connected, and delay. 130 * Next state will be IDLE or RECONNECT. 131 */ 132 DPRINT("Call _iod_rcfail..."); 133 if (nsmb_ioctl(ctx->ct_dev_fd, 134 SMBIOC_IOD_RCFAIL, work) == -1) { 135 err = errno; 136 DPRINT("iod_rcfail: err %d", err); 137 goto out; 138 } 139 continue; 140 141 case SMBIOD_ST_AUTHOK: 142 /* 143 * This is where we enter the driver and 144 * stay there. While the connection is up 145 * the VC will have SMBIOD_ST_VCACTIVE 146 */ 147 DPRINT("Call _iod_work..."); 148 if (nsmb_ioctl(ctx->ct_dev_fd, 149 SMBIOC_IOD_WORK, work) == -1) { 150 err = errno; 151 DPRINT("iod_work: err %d", err); 152 goto out; 153 } 154 DPRINT("Ret. from _ioc_work"); 155 continue; 156 157 case SMBIOD_ST_DEAD: 158 DPRINT("got state=DEAD"); 159 err = 0; 160 goto out; 161 162 default: 163 DPRINT("Unexpected state: %d (%s)", 164 work->wk_out_state, 165 smb_iod_state_name(work->wk_out_state)); 166 err = EFAULT; 167 goto out; 168 } 169 } 170 171 out: 172 if (ctx->ct_dev_fd != -1) { 173 nsmb_close(ctx->ct_dev_fd); 174 ctx->ct_dev_fd = -1; 175 } 176 177 return (err); 178 } 179