1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Copyright 2016 Nexenta Systems, Inc. All rights reserved.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/time.h>
#include <sys/varargs.h>
#include <sys/modctl.h>
#include <sys/pathname.h>
#include <sys/vnode.h>
#include <sys/socket.h>
#include <sys/ksocket.h>
#undef mem_free /* XXX Remove this after we convert everything to kmem_alloc */
#include <smbsrv/smb_vops.h>
#include <smbsrv/smb.h>
#include <smbsrv/smb_kproto.h>
#include <smbsrv/smb_kstat.h>
/*
* SMB Network Socket API
*
* smb_socreate: Creates an socket based on domain/type.
* smb_soshutdown: Disconnect a socket created with smb_socreate
* smb_sodestroy: Release resources associated with a socket
* smb_sosend: Send the contents of a buffer on a socket
* smb_sorecv: Receive data into a buffer from a socket
* smb_iov_sosend: Send the contents of an iovec on a socket
* smb_iov_sorecv: Receive data into an iovec from a socket
*/
ksocket_t
smb_socreate(int domain, int type, int protocol)
{
ksocket_t sock;
int err = 0;
err = ksocket_socket(&sock, domain, type, protocol, KSOCKET_SLEEP,
CRED());
if (err != 0)
return (NULL);
else
return (sock);
}
/*
* smb_soshutdown will disconnect the socket and prevent subsequent PDU
* reception and transmission. The sonode still exists but its state
* gets modified to indicate it is no longer connected. Calls to
* smb_sorecv/smb_iov_sorecv will return so smb_soshutdown can be used
* regain control of a thread stuck in smb_sorecv.
*/
void
smb_soshutdown(ksocket_t so)
{
(void) ksocket_shutdown(so, SHUT_RDWR, CRED());
}
/*
* smb_sodestroy releases all resources associated with a socket previously
* created with smb_socreate. The socket must be shutdown using smb_soshutdown
* before the socket is destroyed with smb_sodestroy, otherwise undefined
* behavior will result.
*/
void
smb_sodestroy(ksocket_t so)
{
(void) ksocket_close(so, CRED());
}
int
smb_sorecv(ksocket_t so, void *msg, size_t len)
{
size_t recvd;
int err;
ASSERT(so != NULL);
ASSERT(len != 0);
if ((err = ksocket_recv(so, msg, len, MSG_WAITALL, &recvd,
CRED())) != 0) {
return (err);
}
/* Successful receive */
return ((recvd == len) ? 0 : -1);
}
/*
* smb_net_txl_constructor
*
* Transmit list constructor
*/
void
smb_net_txl_constructor(smb_txlst_t *txl)
{
ASSERT(txl->tl_magic != SMB_TXLST_MAGIC);
mutex_init(&txl->tl_mutex, NULL, MUTEX_DEFAULT, NULL);
cv_init(&txl->tl_wait_cv, NULL, CV_DEFAULT, NULL);
txl->tl_active = B_FALSE;
txl->tl_magic = SMB_TXLST_MAGIC;
}
/*
* smb_net_txl_destructor
*
* Transmit list destructor
*/
void
smb_net_txl_destructor(smb_txlst_t *txl)
{
ASSERT(txl->tl_magic == SMB_TXLST_MAGIC);
txl->tl_magic = 0;
cv_destroy(&txl->tl_wait_cv);
mutex_destroy(&txl->tl_mutex);
}
/*
* smb_net_send_uio
*
* This routine puts the transmit buffer passed in on the wire.
* If another thread is already sending, block on the CV.
*/
int
smb_net_send_uio(smb_session_t *s, struct uio *uio)
{
struct msghdr msg;
size_t sent;
smb_txlst_t *txl = &s->s_txlst;
int rc = 0;
DTRACE_PROBE1(send__wait__start, struct smb_session_t *, s);
/*
* Wait for our turn to send.
*/
mutex_enter(&txl->tl_mutex);
while (txl->tl_active)
cv_wait(&txl->tl_wait_cv, &txl->tl_mutex);
txl->tl_active = B_TRUE;
mutex_exit(&txl->tl_mutex);
DTRACE_PROBE1(send__wait__done, struct smb_session_t *, s);
/*
* OK, try to send.
*
* This should block until we've sent it all,
* or given up due to errors (socket closed).
*/
bzero(&msg, sizeof (msg));
msg.msg_iov = uio->uio_iov;
msg.msg_iovlen = uio->uio_iovcnt;
while (uio->uio_resid > 0) {
rc = ksocket_sendmsg(s->sock, &msg, 0, &sent, CRED());
if (rc != 0)
break;
uio->uio_resid -= sent;
}
mutex_enter(&txl->tl_mutex);
txl->tl_active = B_FALSE;
cv_signal(&txl->tl_wait_cv);
mutex_exit(&txl->tl_mutex);
return (rc);
}
|
