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authorElliott Hughes2017-11-10 12:22:07 -0600
committerElliott Hughes2017-11-10 15:18:10 -0600
commit8e9aeb9053695a14539653093937158d15385ca6 (patch)
treeb02f7ad2149812eea2cb2802b7f238856b66619c /libcutils/socket_local_server_unix.cpp
parent6707ef139d9786887649e3e3c2e3e251a95dc96d (diff)
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Move libcutils source to C++.
Just the minimial changes to get this to actually build, because otherwise we always bog down trying to rewrite everything (when the real answer is usually "stop using libcutils, it's awful"). This doesn't move a handful of files: two are basically just BSD libc source, a couple have outstanding code reviews, and one can be deleted (but I'll do that in a separate change). I'm also skipping the presubmit hooks because otherwise clang-format wants to reformat everything. I'll follow up with that... Bug: N/A Test: builds Change-Id: I06403f465b67c8e493bad466dd76b1151eed5993
Diffstat (limited to 'libcutils/socket_local_server_unix.cpp')
-rw-r--r--libcutils/socket_local_server_unix.cpp126
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
28int 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 */
55int 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
97int 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 */