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Diffstat (limited to 'libcutils/socket_local_server_unix.cpp')
-rw-r--r-- | libcutils/socket_local_server_unix.cpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/libcutils/socket_local_server_unix.cpp b/libcutils/socket_local_server_unix.cpp new file mode 100644 index 000000000..855e5da4e --- /dev/null +++ b/libcutils/socket_local_server_unix.cpp | |||
@@ -0,0 +1,126 @@ | |||
1 | /* libs/cutils/socket_local_server.c | ||
2 | ** | ||
3 | ** Copyright 2006, The Android Open Source Project | ||
4 | ** | ||
5 | ** Licensed under the Apache License, Version 2.0 (the "License"); | ||
6 | ** you may not use this file except in compliance with the License. | ||
7 | ** You may obtain a copy of the License at | ||
8 | ** | ||
9 | ** http://www.apache.org/licenses/LICENSE-2.0 | ||
10 | ** | ||
11 | ** Unless required by applicable law or agreed to in writing, software | ||
12 | ** distributed under the License is distributed on an "AS IS" BASIS, | ||
13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
14 | ** See the License for the specific language governing permissions and | ||
15 | ** limitations under the License. | ||
16 | */ | ||
17 | |||
18 | #include <cutils/sockets.h> | ||
19 | |||
20 | #include <stdlib.h> | ||
21 | #include <string.h> | ||
22 | #include <unistd.h> | ||
23 | #include <errno.h> | ||
24 | #include <stddef.h> | ||
25 | |||
26 | #if defined(_WIN32) | ||
27 | |||
28 | int socket_local_server(const char *name, int namespaceId, int type) | ||
29 | { | ||
30 | errno = ENOSYS; | ||
31 | return -1; | ||
32 | } | ||
33 | |||
34 | #else /* !_WIN32 */ | ||
35 | |||
36 | #include <sys/socket.h> | ||
37 | #include <sys/un.h> | ||
38 | #include <sys/select.h> | ||
39 | #include <sys/types.h> | ||
40 | #include <netinet/in.h> | ||
41 | |||
42 | #include "socket_local_unix.h" | ||
43 | |||
44 | #define LISTEN_BACKLOG 4 | ||
45 | |||
46 | /* Only the bottom bits are really the socket type; there are flags too. */ | ||
47 | #define SOCK_TYPE_MASK 0xf | ||
48 | |||
49 | /** | ||
50 | * Binds a pre-created socket(AF_LOCAL) 's' to 'name' | ||
51 | * returns 's' on success, -1 on fail | ||
52 | * | ||
53 | * Does not call listen() | ||
54 | */ | ||
55 | int socket_local_server_bind(int s, const char *name, int namespaceId) | ||
56 | { | ||
57 | struct sockaddr_un addr; | ||
58 | socklen_t alen; | ||
59 | int n; | ||
60 | int err; | ||
61 | |||
62 | err = socket_make_sockaddr_un(name, namespaceId, &addr, &alen); | ||
63 | |||
64 | if (err < 0) { | ||
65 | return -1; | ||
66 | } | ||
67 | |||
68 | /* basically: if this is a filesystem path, unlink first */ | ||
69 | #if !defined(__linux__) | ||
70 | if (1) { | ||
71 | #else | ||
72 | if (namespaceId == ANDROID_SOCKET_NAMESPACE_RESERVED | ||
73 | || namespaceId == ANDROID_SOCKET_NAMESPACE_FILESYSTEM) { | ||
74 | #endif | ||
75 | /*ignore ENOENT*/ | ||
76 | unlink(addr.sun_path); | ||
77 | } | ||
78 | |||
79 | n = 1; | ||
80 | setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n)); | ||
81 | |||
82 | if(bind(s, (struct sockaddr *) &addr, alen) < 0) { | ||
83 | return -1; | ||
84 | } | ||
85 | |||
86 | return s; | ||
87 | |||
88 | } | ||
89 | |||
90 | |||
91 | /** Open a server-side UNIX domain datagram socket in the Linux non-filesystem | ||
92 | * namespace | ||
93 | * | ||
94 | * Returns fd on success, -1 on fail | ||
95 | */ | ||
96 | |||
97 | int socket_local_server(const char *name, int namespaceId, int type) | ||
98 | { | ||
99 | int err; | ||
100 | int s; | ||
101 | |||
102 | s = socket(AF_LOCAL, type, 0); | ||
103 | if (s < 0) return -1; | ||
104 | |||
105 | err = socket_local_server_bind(s, name, namespaceId); | ||
106 | |||
107 | if (err < 0) { | ||
108 | close(s); | ||
109 | return -1; | ||
110 | } | ||
111 | |||
112 | if ((type & SOCK_TYPE_MASK) == SOCK_STREAM) { | ||
113 | int ret; | ||
114 | |||
115 | ret = listen(s, LISTEN_BACKLOG); | ||
116 | |||
117 | if (ret < 0) { | ||
118 | close(s); | ||
119 | return -1; | ||
120 | } | ||
121 | } | ||
122 | |||
123 | return s; | ||
124 | } | ||
125 | |||
126 | #endif /* !_WIN32 */ | ||