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71 lines
2.2 KiB
71 lines
2.2 KiB
/*
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* Copyright 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#define ANDROID_SOCKET_ENV_PREFIX "ANDROID_SOCKET_"
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#define ANDROID_SOCKET_DIR "/dev/socket"
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/*
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* osi_android_get_control_socket - simple helper function to get the file
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* descriptor of our init-managed Unix domain socket. `name' is the name of the
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* socket, as given in init.rc. Returns -1 on error.
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*
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* This is inline and not in libcutils proper because we want to use this in
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* third-party daemons with minimal modification.
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*/
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static inline int osi_android_get_control_socket(const char* name) {
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char key[64];
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snprintf(key, sizeof(key), ANDROID_SOCKET_ENV_PREFIX "%s", name);
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const char* val = getenv(key);
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if (!val) {
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return -1;
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}
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errno = 0;
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int fd = strtol(val, NULL, 10);
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if (errno) {
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return -1;
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}
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return fd;
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}
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/*
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* See also android.os.LocalSocketAddress.Namespace
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*/
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// Linux "abstract" (non-filesystem) namespace
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#define ANDROID_SOCKET_NAMESPACE_ABSTRACT 0
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// Android "reserved" (/dev/socket) namespace
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#define ANDROID_SOCKET_NAMESPACE_RESERVED 1
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// Normal filesystem namespace
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#define ANDROID_SOCKET_NAMESPACE_FILESYSTEM 2
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extern int osi_socket_local_server(const char* name, int namespaceId, int type);
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extern int osi_socket_local_server_bind(int s, const char* name,
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int namespaceId);
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extern int osi_socket_local_client_connect(int fd, const char* name,
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int namespaceId, int type);
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extern int osi_socket_local_client(const char* name, int namespaceId, int type);
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