1 /*
2 * Copyright (C) 2017-2021 THL A29 Limited, a Tencent company.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
18 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
23 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 *
26 */
27
28 #include <sys/types.h>
29 #include <sys/socket.h>
30 #include <sys/syscallsubr.h>
31 #include <sys/sysproto.h>
32 #include <sys/pcpu.h>
33 #include <sys/proc.h>
34 #include <netgraph/ng_message.h>
35 #include <netgraph/ng_socket.h>
36
37 #include "ff_api.h"
38 #include "ff_host_interface.h"
39
40 static int
ngctl_socket(struct socket_args * uap)41 ngctl_socket(struct socket_args *uap)
42 {
43 int error = sys_socket(curthread, uap);
44 if (error) {
45 ff_os_errno(error);
46 return -1;
47 }
48 return curthread->td_retval[0];
49 }
50
51 static int
ngctl_connect(struct connect_args * uap)52 ngctl_connect(struct connect_args *uap)
53 {
54 int error = sys_connect(curthread, uap);
55 if (error) {
56 ff_os_errno(error);
57 return (-1);
58 }
59
60 return (error);
61 }
62
63 static int
ngctl_bind(struct bind_args * uap)64 ngctl_bind(struct bind_args *uap)
65 {
66 int error = sys_bind(curthread, uap);
67 if (error) {
68 ff_os_errno(error);
69 return (-1);
70 }
71
72 return (error);
73 }
74
75 static int
ngctl_recvfrom(struct recvfrom_args * uap)76 ngctl_recvfrom(struct recvfrom_args *uap)
77 {
78 int error = sys_recvfrom(curthread, uap);
79 if (error) {
80 ff_os_errno(error);
81 return (-1);
82 }
83 return curthread->td_retval[0];
84 }
85
86 static int
ngctl_sendto(struct sendto_args * uap)87 ngctl_sendto(struct sendto_args *uap)
88 {
89 int error = sys_sendto(curthread, uap);
90 if (error) {
91 ff_os_errno(error);
92 return (-1);
93 }
94 return curthread->td_retval[0];
95 }
96
97 static int
ngctl_close(int sockfd)98 ngctl_close(int sockfd)
99 {
100 int error = kern_close(curthread, sockfd);
101 if (error) {
102 ff_os_errno(error);
103 return (-1);
104 }
105 return (error);
106 }
107
108 int
ff_ngctl(int cmd,void * data)109 ff_ngctl(int cmd, void *data)
110 {
111 switch(cmd) {
112 case NGCTL_SOCKET:
113 return ngctl_socket((struct socket_args *)data);
114 case NGCTL_CONNECT:
115 return ngctl_connect((struct connect_args *)data);
116 case NGCTL_BIND:
117 return ngctl_bind((struct bind_args *)data);
118 case NGCTL_SEND:
119 return ngctl_sendto((struct sendto_args *)data);
120 case NGCTL_RECV:
121 return ngctl_recvfrom((struct recvfrom_args *)data);
122 case NGCTL_CLOSE:
123 return ngctl_close(*(int *)data);
124 default:
125 break;
126 }
127
128 ff_os_errno(EINVAL);
129 return (-1);
130 }
131
132