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GUnixConnection

GUnixConnection — A UNIX domain GSocketConnection

Synopsis

#include <gio/gunixconnection.h>

                    GUnixConnection;
gint                g_unix_connection_receive_fd        (GUnixConnection *connection,
                                                         GCancellable *cancellable,
                                                         GError **error);
gboolean            g_unix_connection_send_fd           (GUnixConnection *connection,
                                                         gint fd,
                                                         GCancellable *cancellable,
                                                         GError **error);
GCredentials *      g_unix_connection_receive_credentials
                                                        (GUnixConnection *connection,
                                                         GCancellable *cancellable,
                                                         GError **error);
gboolean            g_unix_connection_send_credentials  (GUnixConnection *connection,
                                                         GCancellable *cancellable,
                                                         GError **error);

Object Hierarchy

  GObject
   +----GIOStream
         +----GSocketConnection
               +----GUnixConnection

Description

This is the subclass of GSocketConnection that is created for UNIX domain sockets.

It contains functions to do some of the UNIX socket specific functionality like passing file descriptors.

Note that <gio/gunixconnection.h> belongs to the UNIX-specific GIO interfaces, thus you have to use the gio-unix-2.0.pc pkg-config file when using it.

Details

GUnixConnection

typedef struct _GUnixConnection GUnixConnection;


g_unix_connection_receive_fd ()

gint                g_unix_connection_receive_fd        (GUnixConnection *connection,
                                                         GCancellable *cancellable,
                                                         GError **error);

Receives a file descriptor from the sending end of the connection. The sending end has to call g_unix_connection_send_fd() for this to work.

As well as reading the fd this also reads a single byte from the stream, as this is required for fd passing to work on some implementations.

connection :

a GUnixConnection

cancellable :

optional GCancellable object, NULL to ignore. [allow-none]

error :

GError for error reporting, or NULL to ignore. [allow-none]

Returns :

a file descriptor on success, -1 on error.

Since 2.22


g_unix_connection_send_fd ()

gboolean            g_unix_connection_send_fd           (GUnixConnection *connection,
                                                         gint fd,
                                                         GCancellable *cancellable,
                                                         GError **error);

Passes a file descriptor to the receiving side of the connection. The receiving end has to call g_unix_connection_receive_fd() to accept the file descriptor.

As well as sending the fd this also writes a single byte to the stream, as this is required for fd passing to work on some implementations.

connection :

a GUnixConnection

fd :

a file descriptor

cancellable :

optional GCancellable object, NULL to ignore. [allow-none]

error :

GError for error reporting, or NULL to ignore. [allow-none]

Returns :

a TRUE on success, NULL on error.

Since 2.22


g_unix_connection_receive_credentials ()

GCredentials *      g_unix_connection_receive_credentials
                                                        (GUnixConnection *connection,
                                                         GCancellable *cancellable,
                                                         GError **error);

Receives credentials from the sending end of the connection. The sending end has to call g_unix_connection_send_credentials() (or similar) for this to work.

As well as reading the credentials this also reads (and discards) a single byte from the stream, as this is required for credentials passing to work on some implementations.

Other ways to exchange credentials with a foreign peer includes the GUnixCredentialsMessage type and g_socket_get_credentials() function.

connection :

A GUnixConnection.

cancellable :

A GCancellable or NULL. [allow-none]

error :

Return location for error or NULL.

Returns :

Received credentials on success (free with g_object_unref()), NULL if error is set. [transfer full]

Since 2.26


g_unix_connection_send_credentials ()

gboolean            g_unix_connection_send_credentials  (GUnixConnection *connection,
                                                         GCancellable *cancellable,
                                                         GError **error);

Passes the credentials of the current user the receiving side of the connection. The receiving end has to call g_unix_connection_receive_credentials() (or similar) to accept the credentials.

As well as sending the credentials this also writes a single NUL byte to the stream, as this is required for credentials passing to work on some implementations.

Other ways to exchange credentials with a foreign peer includes the GUnixCredentialsMessage type and g_socket_get_credentials() function.

connection :

A GUnixConnection.

cancellable :

A GCancellable or NULL. [allow-none]

error :

Return location for error or NULL.

Returns :

TRUE on success, FALSE if error is set.

Since 2.26

See Also

GSocketConnection.