d02d06f8f1
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-ID: <20230823065335.1919380-3-mjt@tls.msk.ru> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
266 lines
9.0 KiB
C
266 lines
9.0 KiB
C
/*
|
|
* QEMU I/O channels sockets driver
|
|
*
|
|
* Copyright (c) 2015 Red Hat, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#ifndef QIO_CHANNEL_SOCKET_H
|
|
#define QIO_CHANNEL_SOCKET_H
|
|
|
|
#include "io/channel.h"
|
|
#include "io/task.h"
|
|
#include "qemu/sockets.h"
|
|
#include "qom/object.h"
|
|
|
|
#define TYPE_QIO_CHANNEL_SOCKET "qio-channel-socket"
|
|
OBJECT_DECLARE_SIMPLE_TYPE(QIOChannelSocket, QIO_CHANNEL_SOCKET)
|
|
|
|
|
|
/**
|
|
* QIOChannelSocket:
|
|
*
|
|
* The QIOChannelSocket class provides a channel implementation
|
|
* that can transport data over a UNIX socket or TCP socket.
|
|
* Beyond the core channel API, it also provides functionality
|
|
* for accepting client connections, tuning some socket
|
|
* parameters and getting socket address strings.
|
|
*/
|
|
|
|
struct QIOChannelSocket {
|
|
QIOChannel parent;
|
|
int fd;
|
|
struct sockaddr_storage localAddr;
|
|
socklen_t localAddrLen;
|
|
struct sockaddr_storage remoteAddr;
|
|
socklen_t remoteAddrLen;
|
|
ssize_t zero_copy_queued;
|
|
ssize_t zero_copy_sent;
|
|
};
|
|
|
|
|
|
/**
|
|
* qio_channel_socket_new:
|
|
*
|
|
* Create a channel for performing I/O on a socket
|
|
* connection, that is initially closed. After
|
|
* creating the socket, it must be setup as a client
|
|
* connection or server.
|
|
*
|
|
* Returns: the socket channel object
|
|
*/
|
|
QIOChannelSocket *
|
|
qio_channel_socket_new(void);
|
|
|
|
/**
|
|
* qio_channel_socket_new_fd:
|
|
* @fd: the socket file descriptor
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Create a channel for performing I/O on the socket
|
|
* connection represented by the file descriptor @fd.
|
|
*
|
|
* Returns: the socket channel object, or NULL on error
|
|
*/
|
|
QIOChannelSocket *
|
|
qio_channel_socket_new_fd(int fd,
|
|
Error **errp);
|
|
|
|
|
|
/**
|
|
* qio_channel_socket_connect_sync:
|
|
* @ioc: the socket channel object
|
|
* @addr: the address to connect to
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Attempt to connect to the address @addr. This method
|
|
* will run in the foreground so the caller will not regain
|
|
* execution control until the connection is established or
|
|
* an error occurs.
|
|
*/
|
|
int qio_channel_socket_connect_sync(QIOChannelSocket *ioc,
|
|
SocketAddress *addr,
|
|
Error **errp);
|
|
|
|
/**
|
|
* qio_channel_socket_connect_async:
|
|
* @ioc: the socket channel object
|
|
* @addr: the address to connect to
|
|
* @callback: the function to invoke on completion
|
|
* @opaque: user data to pass to @callback
|
|
* @destroy: the function to free @opaque
|
|
* @context: the context to run the async task. If %NULL, the default
|
|
* context will be used.
|
|
*
|
|
* Attempt to connect to the address @addr. This method
|
|
* will run in the background so the caller will regain
|
|
* execution control immediately. The function @callback
|
|
* will be invoked on completion or failure. The @addr
|
|
* parameter will be copied, so may be freed as soon
|
|
* as this function returns without waiting for completion.
|
|
*/
|
|
void qio_channel_socket_connect_async(QIOChannelSocket *ioc,
|
|
SocketAddress *addr,
|
|
QIOTaskFunc callback,
|
|
gpointer opaque,
|
|
GDestroyNotify destroy,
|
|
GMainContext *context);
|
|
|
|
|
|
/**
|
|
* qio_channel_socket_listen_sync:
|
|
* @ioc: the socket channel object
|
|
* @addr: the address to listen to
|
|
* @num: the expected amount of connections
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Attempt to listen to the address @addr. This method
|
|
* will run in the foreground so the caller will not regain
|
|
* execution control until the connection is established or
|
|
* an error occurs.
|
|
*/
|
|
int qio_channel_socket_listen_sync(QIOChannelSocket *ioc,
|
|
SocketAddress *addr,
|
|
int num,
|
|
Error **errp);
|
|
|
|
/**
|
|
* qio_channel_socket_listen_async:
|
|
* @ioc: the socket channel object
|
|
* @addr: the address to listen to
|
|
* @num: the expected amount of connections
|
|
* @callback: the function to invoke on completion
|
|
* @opaque: user data to pass to @callback
|
|
* @destroy: the function to free @opaque
|
|
* @context: the context to run the async task. If %NULL, the default
|
|
* context will be used.
|
|
*
|
|
* Attempt to listen to the address @addr. This method
|
|
* will run in the background so the caller will regain
|
|
* execution control immediately. The function @callback
|
|
* will be invoked on completion or failure. The @addr
|
|
* parameter will be copied, so may be freed as soon
|
|
* as this function returns without waiting for completion.
|
|
*/
|
|
void qio_channel_socket_listen_async(QIOChannelSocket *ioc,
|
|
SocketAddress *addr,
|
|
int num,
|
|
QIOTaskFunc callback,
|
|
gpointer opaque,
|
|
GDestroyNotify destroy,
|
|
GMainContext *context);
|
|
|
|
|
|
/**
|
|
* qio_channel_socket_dgram_sync:
|
|
* @ioc: the socket channel object
|
|
* @localAddr: the address to local bind address
|
|
* @remoteAddr: the address to remote peer address
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Attempt to initialize a datagram socket bound to
|
|
* @localAddr and communicating with peer @remoteAddr.
|
|
* This method will run in the foreground so the caller
|
|
* will not regain execution control until the socket
|
|
* is established or an error occurs.
|
|
*/
|
|
int qio_channel_socket_dgram_sync(QIOChannelSocket *ioc,
|
|
SocketAddress *localAddr,
|
|
SocketAddress *remoteAddr,
|
|
Error **errp);
|
|
|
|
/**
|
|
* qio_channel_socket_dgram_async:
|
|
* @ioc: the socket channel object
|
|
* @localAddr: the address to local bind address
|
|
* @remoteAddr: the address to remote peer address
|
|
* @callback: the function to invoke on completion
|
|
* @opaque: user data to pass to @callback
|
|
* @destroy: the function to free @opaque
|
|
* @context: the context to run the async task. If %NULL, the default
|
|
* context will be used.
|
|
*
|
|
* Attempt to initialize a datagram socket bound to
|
|
* @localAddr and communicating with peer @remoteAddr.
|
|
* This method will run in the background so the caller
|
|
* will regain execution control immediately. The function
|
|
* @callback will be invoked on completion or failure.
|
|
* The @localAddr and @remoteAddr parameters will be copied,
|
|
* so may be freed as soon as this function returns without
|
|
* waiting for completion.
|
|
*/
|
|
void qio_channel_socket_dgram_async(QIOChannelSocket *ioc,
|
|
SocketAddress *localAddr,
|
|
SocketAddress *remoteAddr,
|
|
QIOTaskFunc callback,
|
|
gpointer opaque,
|
|
GDestroyNotify destroy,
|
|
GMainContext *context);
|
|
|
|
|
|
/**
|
|
* qio_channel_socket_get_local_address:
|
|
* @ioc: the socket channel object
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Get the string representation of the local socket
|
|
* address. A pointer to the allocated address information
|
|
* struct will be returned, which the caller is required to
|
|
* release with a call qapi_free_SocketAddress() when no
|
|
* longer required.
|
|
*
|
|
* Returns: 0 on success, -1 on error
|
|
*/
|
|
SocketAddress *
|
|
qio_channel_socket_get_local_address(QIOChannelSocket *ioc,
|
|
Error **errp);
|
|
|
|
/**
|
|
* qio_channel_socket_get_remote_address:
|
|
* @ioc: the socket channel object
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Get the string representation of the local socket
|
|
* address. A pointer to the allocated address information
|
|
* struct will be returned, which the caller is required to
|
|
* release with a call qapi_free_SocketAddress() when no
|
|
* longer required.
|
|
*
|
|
* Returns: the socket address struct, or NULL on error
|
|
*/
|
|
SocketAddress *
|
|
qio_channel_socket_get_remote_address(QIOChannelSocket *ioc,
|
|
Error **errp);
|
|
|
|
|
|
/**
|
|
* qio_channel_socket_accept:
|
|
* @ioc: the socket channel object
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* If the socket represents a server, then this accepts
|
|
* a new client connection. The returned channel will
|
|
* represent the connected client socket.
|
|
*
|
|
* Returns: the new client channel, or NULL on error
|
|
*/
|
|
QIOChannelSocket *
|
|
qio_channel_socket_accept(QIOChannelSocket *ioc,
|
|
Error **errp);
|
|
|
|
|
|
#endif /* QIO_CHANNEL_SOCKET_H */
|