1 /*
2 * Copyright 2019 Intel Corporation
3 * SPDX-License-Identifier: MIT
4 */
5
6 #include <errno.h>
7
8 #include "os_socket.h"
9
10 #if defined(__linux__)
11
12 #include <fcntl.h>
13 #include <poll.h>
14 #include <stddef.h>
15 #include <string.h>
16 #include <sys/socket.h>
17 #include <sys/un.h>
18 #include <unistd.h>
19
20 int
os_socket_listen_abstract(const char * path,int count)21 os_socket_listen_abstract(const char *path, int count)
22 {
23 int s = socket(AF_UNIX, SOCK_STREAM, 0);
24 if (s < 0)
25 return -1;
26
27 struct sockaddr_un addr;
28 memset(&addr, 0, sizeof(addr));
29 addr.sun_family = AF_UNIX;
30 strncpy(addr.sun_path + 1, path, sizeof(addr.sun_path) - 2);
31
32 /* Create an abstract socket */
33 int ret = bind(s, (struct sockaddr*)&addr,
34 offsetof(struct sockaddr_un, sun_path) +
35 strlen(path) + 1);
36 if (ret < 0) {
37 close(s);
38 return -1;
39 }
40
41 if (listen(s, count) < 0) {
42 close(s);
43 return -1;
44 }
45
46 return s;
47 }
48
49 int
os_socket_accept(int s)50 os_socket_accept(int s)
51 {
52 return accept(s, NULL, NULL);
53 }
54
55 ssize_t
os_socket_recv(int socket,void * buffer,size_t length,int flags)56 os_socket_recv(int socket, void *buffer, size_t length, int flags)
57 {
58 return recv(socket, buffer, length, flags);
59 }
60
61 ssize_t
os_socket_send(int socket,const void * buffer,size_t length,int flags)62 os_socket_send(int socket, const void *buffer, size_t length, int flags)
63 {
64 return send(socket, buffer, length, flags);
65 }
66
67 void
os_socket_block(int s,bool block)68 os_socket_block(int s, bool block)
69 {
70 int old = fcntl(s, F_GETFL, 0);
71 if (old == -1)
72 return;
73
74 /* TODO obey block */
75 if (block)
76 fcntl(s, F_SETFL, old & ~O_NONBLOCK);
77 else
78 fcntl(s, F_SETFL, old | O_NONBLOCK);
79 }
80
81 void
os_socket_close(int s)82 os_socket_close(int s)
83 {
84 close(s);
85 }
86
87 #else
88
89 int
os_socket_listen_abstract(const char * path,int count)90 os_socket_listen_abstract(const char *path, int count)
91 {
92 errno = -ENOSYS;
93 return -1;
94 }
95
96 int
os_socket_accept(int s)97 os_socket_accept(int s)
98 {
99 errno = -ENOSYS;
100 return -1;
101 }
102
103 ssize_t
os_socket_recv(int socket,void * buffer,size_t length,int flags)104 os_socket_recv(int socket, void *buffer, size_t length, int flags)
105 {
106 errno = -ENOSYS;
107 return -1;
108 }
109
110 ssize_t
os_socket_send(int socket,const void * buffer,size_t length,int flags)111 os_socket_send(int socket, const void *buffer, size_t length, int flags)
112 {
113 errno = -ENOSYS;
114 return -1;
115 }
116
117 void
os_socket_block(int s,bool block)118 os_socket_block(int s, bool block)
119 {
120 }
121
122 void
os_socket_close(int s)123 os_socket_close(int s)
124 {
125 }
126
127 #endif
128