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 */
63int
64smb_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
165out:
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