Revert 187233

ipc/unix_domain_socket_util.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef IPC_UNIX_DOMAIN_SOCKET_UTIL_H_
-#define IPC_UNIX_DOMAIN_SOCKET_UTIL_H_
-
-#include <sys/types.h>
-
-#include <string>
-
-#include "ipc/ipc_export.h"
-
-namespace base {
-class FilePath;
-}  // namespace base
-
-namespace IPC {
-
-// Creates a UNIX-domain socket at |socket_name| and bind()s it, then listen()s
-// on it. If successful, |server_listen_fd| will be set to the new file
-// descriptor, and the function will return true. Otherwise returns false.
-//
-// This function also effectively performs `mkdir -p` on the dirname of
-// |socket_name| to ensure that all the directories up to |socket_name| exist.
-// As a result of which this function must be run on a thread that allows
-// blocking I/O, e.g. the FILE thread in Chrome's browser process.
-IPC_EXPORT bool CreateServerUnixDomainSocket(const base::FilePath& socket_name,
-                                             int* server_listen_fd);
-
-// Opens a UNIX-domain socket at |socket_name| and connect()s to it. If
-// successful, |client_socket| will be set to the new file descriptor, and the
-// function will return true. Otherwise returns false.
-IPC_EXPORT bool CreateClientUnixDomainSocket(const base::FilePath& socket_name,
-                                             int* client_socket);
-
-// Gets the effective user ID of the other end of the UNIX-domain socket
-// specified by |fd|. If successful, sets |peer_euid| to the uid, and returns
-// true. Otherwise returns false.
-IPC_EXPORT bool GetPeerEuid(int fd, uid_t* peer_euid);
-
-// Checks that the process on the other end of the UNIX domain socket
-// represented by |peer_fd| shares the same EUID as this process.
-IPC_EXPORT bool IsPeerAuthorized(int peer_fd);
-
-// Accepts a client attempting to connect to |server_listen_fd|, storing the
-// new file descriptor for the connection in |server_socket|.
-//
-// Returns false if |server_listen_fd| encounters an unrecoverable error.
-// Returns true if it's valid to keep listening on |server_listen_fd|. In this
-// case, it's possible that a connection wasn't successfully established; then,
-// |server_socket| will be set to -1.
-IPC_EXPORT bool ServerAcceptConnection(int server_listen_fd,
-                                       int* server_socket);
-
-// The maximum length of the name of a socket for MODE_NAMED_SERVER or
-// MODE_NAMED_CLIENT if you want to pass in your own socket.
-// The standard size on linux is 108, mac is 104. To maintain consistency
-// across platforms we standardize on the smaller value.
-static const size_t kMaxSocketNameLength = 104;
-
-}  // namespace IPC
-
-#endif  // IPC_UNIX_DOMAIN_SOCKET_UTIL_H_