2 * Copyright (C) 2006 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef __CUTILS_SOCKETS_H
18 #define __CUTILS_SOCKETS_H
27 typedef int socklen_t
;
28 #elif HAVE_SYS_SOCKET_H
29 #include <sys/socket.h>
32 #define ANDROID_SOCKET_ENV_PREFIX "ANDROID_SOCKET_"
33 #define ANDROID_SOCKET_DIR "/dev/socket"
40 * android_get_control_socket - simple helper function to get the file
41 * descriptor of our init-managed Unix domain socket. `name' is the name of the
42 * socket, as given in init.rc. Returns -1 on error.
44 * This is inline and not in libcutils proper because we want to use this in
45 * third-party daemons with minimal modification.
47 static inline int android_get_control_socket(const char *name
)
49 char key
[64] = ANDROID_SOCKET_ENV_PREFIX
;
53 /* build our environment variable, counting cycles like a wolf ... */
55 strlcpy(key
+ sizeof(ANDROID_SOCKET_ENV_PREFIX
) - 1,
57 sizeof(key
) - sizeof(ANDROID_SOCKET_ENV_PREFIX
));
58 #else /* for the host, which may lack the almightly strncpy ... */
59 strncpy(key
+ sizeof(ANDROID_SOCKET_ENV_PREFIX
) - 1,
61 sizeof(key
) - sizeof(ANDROID_SOCKET_ENV_PREFIX
));
62 key
[sizeof(key
)-1] = '\0';
70 fd
= strtol(val
, NULL
, 10);
78 * See also android.os.LocalSocketAddress.Namespace
80 // Linux "abstract" (non-filesystem) namespace
81 #define ANDROID_SOCKET_NAMESPACE_ABSTRACT 0
82 // Android "reserved" (/dev/socket) namespace
83 #define ANDROID_SOCKET_NAMESPACE_RESERVED 1
84 // Normal filesystem namespace
85 #define ANDROID_SOCKET_NAMESPACE_FILESYSTEM 2
87 extern int socket_loopback_client(int port
, int type
);
88 extern int socket_network_client(const char *host
, int port
, int type
);
89 extern int socket_loopback_server(int port
, int type
);
90 extern int socket_local_server(const char *name
, int namespaceId
, int type
);
91 extern int socket_local_server_bind(int s
, const char *name
, int namespaceId
);
92 extern int socket_local_client_connect(int fd
,
93 const char *name
, int namespaceId
, int type
);
94 extern int socket_local_client(const char *name
, int namespaceId
, int type
);
95 extern int socket_inaddr_any_server(int port
, int type
);
98 * socket_peer_is_trusted - Takes a socket which is presumed to be a
99 * connected local socket (e.g. AF_LOCAL) and returns whether the peer
100 * (the userid that owns the process on the other end of that socket)
101 * is one of the two trusted userids, root or shell.
103 * Note: This only works as advertised on the Android OS and always
104 * just returns true when called on other operating systems.
106 extern bool socket_peer_is_trusted(int fd
);
112 #endif /* __CUTILS_SOCKETS_H */