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
27 /*
28 * Functions called by the IO deamon (IOD).
29 * Here in the library to simplify testing.
30 */
31
32 #include <errno.h>
33 #include <fcntl.h>
34 #include <stdio.h>
35 #include <string.h>
36 #include <stdlib.h>
37 #include <unistd.h>
38 #include <libintl.h>
39
40 #include <sys/byteorder.h>
41 #include <sys/types.h>
42 #include <sys/fcntl.h>
43 #include <sys/ioctl.h>
44 #include <sys/time.h>
45 #include <sys/socket.h>
46
47 #include <netinet/in.h>
48 #include <netinet/tcp.h>
49 #include <arpa/inet.h>
50
51 #include <netsmb/smb.h>
52 #include <netsmb/smb_lib.h>
53 #include <netsmb/netbios.h>
54 #include <netsmb/nb_lib.h>
55 #include <netsmb/smb_dev.h>
56
57 #include "charsets.h"
58 #include "private.h"
59
60 /*
61 * Be the reader thread for this VC.
62 */
63 int
smb_iod_work(smb_ctx_t * ctx)64 smb_iod_work(smb_ctx_t *ctx)
65 {
66 smbioc_ssn_work_t *work = &ctx->ct_work;
67 int vcst, err = 0;
68
69 DPRINT("server: %s", ctx->ct_srvname);
70
71 /* Calle should have opened these */
72 if (ctx->ct_tran_fd == -1 || ctx->ct_dev_fd == -1) {
73 err = EINVAL;
74 goto out;
75 }
76
77 /*
78 * This is the reader / reconnect loop.
79 *
80 * We could start with state "idle", but
81 * we know someone wants a connection to
82 * this server, so start in "vcactive".
83 *
84 * XXX: Add some syslog calls in here?
85 */
86 vcst = SMBIOD_ST_VCACTIVE;
87
88 for (;;) {
89
90 switch (vcst) {
91 case SMBIOD_ST_IDLE:
92 /*
93 * Wait for driver requests to arrive
94 * for this VC, then return here.
95 * Next state is normally RECONNECT.
96 */
97 DPRINT("state: idle");
98 if (ioctl(ctx->ct_dev_fd,
99 SMBIOC_IOD_IDLE, &vcst) == -1) {
100 err = errno;
101 DPRINT("ioc_idle: err %d", err);
102 goto out;
103 }
104 continue;
105
106 case SMBIOD_ST_RECONNECT:
107 DPRINT("state: reconnect");
108 err = smb_iod_connect(ctx);
109 if (err == 0) {
110 vcst = SMBIOD_ST_VCACTIVE;
111 continue;
112 }
113 DPRINT("_iod_connect: err %d", err);
114 /*
115 * If the error was EAUTH, retry is
116 * not likely to succeed either, so
117 * just exit this thread. The user
118 * will need to run smbutil to get
119 * a new thread with new auth info.
120 */
121 if (err == EAUTH)
122 goto out;
123 vcst = SMBIOD_ST_RCFAILED;
124 continue;
125
126 case SMBIOD_ST_RCFAILED:
127 DPRINT("state: rcfailed");
128 /*
129 * Reconnect failed. Kill off any
130 * requests waiting in the driver,
131 * then get ready to try again.
132 * Next state is normally IDLE.
133 */
134 if (ioctl(ctx->ct_dev_fd,
135 SMBIOC_IOD_RCFAIL, &vcst) == -1) {
136 err = errno;
137 DPRINT("ioc_rcfail: err %d", err);
138 goto out;
139 }
140 continue;
141
142 case SMBIOD_ST_VCACTIVE:
143 DPRINT("state: active");
144 if (ioctl(ctx->ct_dev_fd,
145 SMBIOC_IOD_WORK, work) == -1) {
146 err = errno;
147 DPRINT("ioc_work: err %d", err);
148 goto out;
149 }
150 vcst = work->wk_out_state;
151 continue;
152
153 case SMBIOD_ST_DEAD:
154 DPRINT("state: dead");
155 err = 0;
156 goto out;
157
158 default:
159 DPRINT("state: BAD(%d)", vcst);
160 err = EFAULT;
161 goto out;
162 }
163 }
164
165 out:
166 if (ctx->ct_tran_fd != -1) {
167 close(ctx->ct_tran_fd);
168 ctx->ct_tran_fd = -1;
169 }
170 if (ctx->ct_dev_fd != -1) {
171 close(ctx->ct_dev_fd);
172 ctx->ct_dev_fd = -1;
173 }
174
175 return (err);
176 }
177