| /* |
| * 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. |
| */ |
| |
| #include <errno.h> |
| #include <netinet/in.h> |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| #include <sys/select.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include "osi/include/socket_utils/sockets.h" |
| #include "osi/include/socket_utils/socket_local.h" |
| |
| #define LISTEN_BACKLOG 4 |
| |
| /* Only the bottom bits are really the socket type; there are flags too. */ |
| #define SOCK_TYPE_MASK 0xf |
| |
| /** |
| * Binds a pre-created socket(AF_LOCAL) 's' to 'name' |
| * returns 's' on success, -1 on fail |
| * |
| * Does not call listen() |
| */ |
| int osi_socket_local_server_bind(int s, const char *name, int namespaceId) { |
| struct sockaddr_un addr; |
| socklen_t alen; |
| int n; |
| int err; |
| |
| err = osi_socket_make_sockaddr_un(name, namespaceId, &addr, &alen); |
| |
| if (err < 0) { |
| return -1; |
| } |
| |
| /* basically: if this is a filesystem path, unlink first */ |
| #if !defined(__linux__) |
| if (1) { |
| #else |
| if (namespaceId == ANDROID_SOCKET_NAMESPACE_RESERVED || |
| namespaceId == ANDROID_SOCKET_NAMESPACE_FILESYSTEM) { |
| #endif |
| /*ignore ENOENT*/ |
| unlink(addr.sun_path); |
| } |
| |
| n = 1; |
| setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n)); |
| |
| if (bind(s, (struct sockaddr *)&addr, alen) < 0) { |
| return -1; |
| } |
| |
| return s; |
| } |
| |
| /** Open a server-side UNIX domain datagram socket in the Linux non-filesystem |
| * namespace |
| * |
| * Returns fd on success, -1 on fail |
| */ |
| int osi_socket_local_server(const char *name, int namespaceId, int type) { |
| int err; |
| int s; |
| |
| s = socket(AF_LOCAL, type, 0); |
| if (s < 0) return -1; |
| |
| err = osi_socket_local_server_bind(s, name, namespaceId); |
| |
| if (err < 0) { |
| close(s); |
| return -1; |
| } |
| |
| if ((type & SOCK_TYPE_MASK) == SOCK_STREAM) { |
| int ret; |
| |
| ret = listen(s, LISTEN_BACKLOG); |
| |
| if (ret < 0) { |
| close(s); |
| return -1; |
| } |
| } |
| |
| return s; |
| } |