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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
* 2005-2007 Takahiro Hirofuchi
* Copyright (C) 2015-2016 Samsung Electronics
* Igor Kotrasinski <i.kotrasinsk@samsung.com>
* Krzysztof Opasiak <k.opasiak@samsung.com>
*/
#include <sys/stat.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <getopt.h>
#include <unistd.h>
#include <errno.h>
#include "vhci_driver.h"
#include "usbip_common.h"
#include "usbip_network.h"
#include "usbip.h"
static const char usbip_attach_usage_string[] =
"usbip attach <args>\n"
" -r, --remote=<host> The machine with exported USB devices\n"
" -b, --busid=<busid> Busid of the device on <host>\n"
" -d, --device=<devid> Id of the virtual UDC on <host>\n";
void usbip_attach_usage(void)
{
printf("usage: %s", usbip_attach_usage_string);
}
#define MAX_BUFF 100
static int record_connection(char *host, char *port, char *busid, int rhport)
{
int fd;
char path[PATH_MAX+1];
char buff[MAX_BUFF+1];
int ret;
ret = mkdir(VHCI_STATE_PATH, 0700);
if (ret < 0) {
/* if VHCI_STATE_PATH exists, then it better be a directory */
if (errno == EEXIST) {
struct stat s;
ret = stat(VHCI_STATE_PATH, &s);
if (ret < 0)
return -1;
if (!(s.st_mode & S_IFDIR))
return -1;
} else
return -1;
}
snprintf(path, PATH_MAX, VHCI_STATE_PATH"/port%d", rhport);
fd = open(path, O_WRONLY|O_CREAT|O_TRUNC, S_IRWXU);
if (fd < 0)
return -1;
snprintf(buff, MAX_BUFF, "%s %s %s\n",
host, port, busid);
ret = write(fd, buff, strlen(buff));
if (ret != (ssize_t) strlen(buff)) {
close(fd);
return -1;
}
close(fd);
return 0;
}
static int import_device(int sockfd, struct usbip_usb_device *udev)
{
int rc;
int port;
uint32_t speed = udev->speed;
rc = usbip_vhci_driver_open();
if (rc < 0) {
err("open vhci_driver (is vhci_hcd loaded?)");
goto err_out;
}
do {
port = usbip_vhci_get_free_port(speed);
if (port < 0) {
err("no free port");
goto err_driver_close;
}
dbg("got free port %d", port);
rc = usbip_vhci_attach_device(port, sockfd, udev->busnum,
udev->devnum, udev->speed);
if (rc < 0 && errno != EBUSY) {
err("import device");
goto err_driver_close;
}
} while (rc < 0);
usbip_vhci_driver_close();
return port;
err_driver_close:
usbip_vhci_driver_close();
err_out:
return -1;
}
static int query_import_device(int sockfd, char *busid)
{
int rc;
struct op_import_request request;
struct op_import_reply reply;
uint16_t code = OP_REP_IMPORT;
int status;
memset(&request, 0, sizeof(request));
memset(&reply, 0, sizeof(reply));
/* send a request */
rc = usbip_net_send_op_common(sockfd, OP_REQ_IMPORT, 0);
if (rc < 0) {
err("send op_common");
return -1;
}
strncpy(request.busid, busid, SYSFS_BUS_ID_SIZE-1);
PACK_OP_IMPORT_REQUEST(0, &request);
rc = usbip_net_send(sockfd, (void *) &request, sizeof(request));
if (rc < 0) {
err("send op_import_request");
return -1;
}
/* receive a reply */
rc = usbip_net_recv_op_common(sockfd, &code, &status);
if (rc < 0) {
err("Attach Request for %s failed - %s\n",
busid, usbip_op_common_status_string(status));
return -1;
}
rc = usbip_net_recv(sockfd, (void *) &reply, sizeof(reply));
if (rc < 0) {
err("recv op_import_reply");
return -1;
}
PACK_OP_IMPORT_REPLY(0, &reply);
/* check the reply */
if (strncmp(reply.udev.busid, busid, SYSFS_BUS_ID_SIZE)) {
err("recv different busid %s", reply.udev.busid);
return -1;
}
/* import a device */
return import_device(sockfd, &reply.udev);
}
static int attach_device(char *host, char *busid)
{
int sockfd;
int rc;
int rhport;
sockfd = usbip_net_tcp_connect(host, usbip_port_string);
if (sockfd < 0) {
err("tcp connect");
return -1;
}
rhport = query_import_device(sockfd, busid);
if (rhport < 0)
return -1;
close(sockfd);
rc = record_connection(host, usbip_port_string, busid, rhport);
if (rc < 0) {
err("record connection");
return -1;
}
return 0;
}
int usbip_attach(int argc, char *argv[])
{
static const struct option opts[] = {
{ "remote", required_argument, NULL, 'r' },
{ "busid", required_argument, NULL, 'b' },
{ "device", required_argument, NULL, 'd' },
{ NULL, 0, NULL, 0 }
};
char *host = NULL;
char *busid = NULL;
int opt;
int ret = -1;
for (;;) {
opt = getopt_long(argc, argv, "d:r:b:", opts, NULL);
if (opt == -1)
break;
switch (opt) {
case 'r':
host = optarg;
break;
case 'd':
case 'b':
busid = optarg;
break;
default:
goto err_out;
}
}
if (!host || !busid)
goto err_out;
ret = attach_device(host, busid);
goto out;
err_out:
usbip_attach_usage();
out:
return ret;
}
|
