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 2012 Nexenta Systems, Inc. All rights reserved.
24 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 */
27
28 /*
29 * Functions called by the IO deamon (IOD).
30 * Here in the library to simplify testing.
31 */
32
33 #include <errno.h>
34 #include <fcntl.h>
35 #include <stdio.h>
36 #include <string.h>
37 #include <stdlib.h>
38 #include <unistd.h>
39 #include <libintl.h>
40
41 #include <sys/byteorder.h>
42 #include <sys/types.h>
43 #include <sys/fcntl.h>
44 #include <sys/ioctl.h>
45 #include <sys/time.h>
46 #include <sys/socket.h>
47
48 #include <netinet/in.h>
49 #include <netinet/tcp.h>
50 #include <arpa/inet.h>
51
52 #include <netsmb/smb.h>
53 #include <netsmb/smb_lib.h>
54 #include <netsmb/netbios.h>
55 #include <netsmb/nb_lib.h>
56 #include <netsmb/smb_dev.h>
57
58 #include "charsets.h"
59 #include "private.h"
60
61 /*
62 * Be the reader thread for this VC.
63 */
64 int
65 smb_iod_work(smb_ctx_t *ctx)
66 {
67 smbioc_ssn_work_t *work = &ctx->ct_work;
68 int vcst, err = 0;
69
70 DPRINT("server: %s", ctx->ct_srvname);
71
72 /* Calle should have opened these */
73 if (ctx->ct_tran_fd == -1 || ctx->ct_dev_fd == -1) {
74 err = EINVAL;
75 goto out;
76 }
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 vcst = SMBIOD_ST_VCACTIVE;
88
89 for (;;) {
90
91 switch (vcst) {
92 case SMBIOD_ST_IDLE:
93 /*
94 * Wait for driver requests to arrive
95 * for this VC, then return here.
96 * Next state is normally RECONNECT.
97 */
98 DPRINT("state: idle");
99 if (ioctl(ctx->ct_dev_fd,
100 SMBIOC_IOD_IDLE, &vcst) == -1) {
101 err = errno;
102 DPRINT("ioc_idle: err %d", err);
103 goto out;
104 }
105 continue;
106
107 case SMBIOD_ST_RECONNECT:
108 DPRINT("state: reconnect");
109 err = smb_iod_connect(ctx);
110 if (err == 0) {
111 vcst = SMBIOD_ST_VCACTIVE;
112 continue;
113 }
114 DPRINT("_iod_connect: err %d", err);
115 /*
116 * If the error was EAUTH, retry is
117 * not likely to succeed either, so
118 * just exit this thread. The user
119 * will need to run smbutil to get
120 * a new thread with new auth info.
121 */
122 if (err == EAUTH)
123 goto out;
124 vcst = SMBIOD_ST_RCFAILED;
125 continue;
126
127 case SMBIOD_ST_RCFAILED:
128 DPRINT("state: rcfailed");
129 /*
130 * Reconnect failed. Kill off any
131 * requests waiting in the driver,
132 * then get ready to try again.
133 * Next state is normally IDLE.
134 */
135 if (ioctl(ctx->ct_dev_fd,
136 SMBIOC_IOD_RCFAIL, &vcst) == -1) {
137 err = errno;
138 DPRINT("ioc_rcfail: err %d", err);
139 goto out;
140 }
141 continue;
142
143 case SMBIOD_ST_VCACTIVE:
144 DPRINT("state: active");
145 if (ioctl(ctx->ct_dev_fd,
146 SMBIOC_IOD_WORK, work) == -1) {
147 err = errno;
148 DPRINT("ioc_work: err %d", err);
149 goto out;
150 }
151 vcst = work->wk_out_state;
152 /*
153 * Go ahead and close the transport now,
154 * rather than wait until reconnect to
155 * this server.
156 */
157 close(ctx->ct_tran_fd);
158 ctx->ct_tran_fd = -1;
159 continue;
160
161 case SMBIOD_ST_DEAD:
162 DPRINT("state: dead");
163 err = 0;
164 goto out;
165
166 default:
167 DPRINT("state: BAD(%d)", vcst);
168 err = EFAULT;
169 goto out;
170 }
171 }
172
173 out:
174 if (ctx->ct_tran_fd != -1) {
175 close(ctx->ct_tran_fd);
176 ctx->ct_tran_fd = -1;
177 }
178 if (ctx->ct_dev_fd != -1) {
179 close(ctx->ct_dev_fd);
180 ctx->ct_dev_fd = -1;
181 }
182
183 return (err);
184 }