blob: 4508a3036e781d9dd35b9e68487af1f4deeac843 [file] [log] [blame]
/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#define ANDROID_SOCKET_ENV_PREFIX "ANDROID_SOCKET_"
#define ANDROID_SOCKET_DIR "/dev/socket"
#ifdef __cplusplus
extern "C" {
#endif
/*
* osi_android_get_control_socket - simple helper function to get the file
* descriptor of our init-managed Unix domain socket. `name' is the name of the
* socket, as given in init.rc. Returns -1 on error.
*
* This is inline and not in libcutils proper because we want to use this in
* third-party daemons with minimal modification.
*/
static inline int osi_android_get_control_socket(const char* name) {
char key[64];
snprintf(key, sizeof(key), ANDROID_SOCKET_ENV_PREFIX "%s", name);
const char* val = getenv(key);
if (!val) {
return -1;
}
errno = 0;
int fd = strtol(val, NULL, 10);
if (errno) {
return -1;
}
return fd;
}
/*
* See also android.os.LocalSocketAddress.Namespace
*/
// Linux "abstract" (non-filesystem) namespace
#define ANDROID_SOCKET_NAMESPACE_ABSTRACT 0
// Android "reserved" (/dev/socket) namespace
#define ANDROID_SOCKET_NAMESPACE_RESERVED 1
// Normal filesystem namespace
#define ANDROID_SOCKET_NAMESPACE_FILESYSTEM 2
extern int osi_socket_local_server(const char* name, int namespaceId, int type);
extern int osi_socket_local_server_bind(int s, const char* name,
int namespaceId);
extern int osi_socket_local_client_connect(int fd, const char* name,
int namespaceId, int type);
extern int osi_socket_local_client(const char* name, int namespaceId, int type);
#ifdef __cplusplus
}
#endif