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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 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 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, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include <config.h>
#include <strings.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <fcntl.h>
#include <glib.h>
#include <glib-object.h>
#include <glib/gi18n.h>
#include <gvfswritechannel.h>
#include <gvfsdaemonprotocol.h>
#include <gvfsdaemonutils.h>
#include <gvfsjobwrite.h>
#include <gvfsjobseekwrite.h>
#include <gvfsjobclosewrite.h>
#include <gvfsjobqueryinfowrite.h>
struct _GVfsWriteChannel
{
GVfsChannel parent_instance;
};
G_DEFINE_TYPE (GVfsWriteChannel, g_vfs_write_channel, G_VFS_TYPE_CHANNEL)
static GVfsJob *write_channel_close (GVfsChannel *channel);
static GVfsJob *write_channel_handle_request (GVfsChannel *channel,
guint32 command,
guint32 seq_nr,
guint32 arg1,
guint32 arg2,
gpointer data,
gsize data_len,
GError **error);
static void
g_vfs_write_channel_finalize (GObject *object)
{
if (G_OBJECT_CLASS (g_vfs_write_channel_parent_class)->finalize)
(*G_OBJECT_CLASS (g_vfs_write_channel_parent_class)->finalize) (object);
}
static void
g_vfs_write_channel_class_init (GVfsWriteChannelClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GVfsChannelClass *channel_class = G_VFS_CHANNEL_CLASS (klass);
gobject_class->finalize = g_vfs_write_channel_finalize;
channel_class->close = write_channel_close;
channel_class->handle_request = write_channel_handle_request;
}
static void
g_vfs_write_channel_init (GVfsWriteChannel *channel)
{
}
static GVfsJob *
write_channel_close (GVfsChannel *channel)
{
return g_vfs_job_close_write_new (G_VFS_WRITE_CHANNEL (channel),
g_vfs_channel_get_backend_handle (channel),
g_vfs_channel_get_backend (channel));
}
static GVfsJob *
write_channel_handle_request (GVfsChannel *channel,
guint32 command,
guint32 seq_nr,
guint32 arg1,
guint32 arg2,
gpointer data,
gsize data_len,
GError **error)
{
GVfsJob *job;
GSeekType seek_type;
GVfsBackendHandle backend_handle;
GVfsBackend *backend;
GVfsWriteChannel *write_channel;
char *attrs;
write_channel = G_VFS_WRITE_CHANNEL (channel);
backend_handle = g_vfs_channel_get_backend_handle (channel);
backend = g_vfs_channel_get_backend (channel);
job = NULL;
switch (command)
{
case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_WRITE:
job = g_vfs_job_write_new (write_channel,
backend_handle,
data, data_len,
backend);
data = NULL; /* Pass ownership */
break;
case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_CLOSE:
job = g_vfs_job_close_write_new (write_channel,
backend_handle,
backend);
break;
case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_SEEK_END:
case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_SEEK_SET:
seek_type = G_SEEK_SET;
if (command == G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_SEEK_END)
seek_type = G_SEEK_END;
job = g_vfs_job_seek_write_new (write_channel,
backend_handle,
seek_type,
((goffset)arg1) | (((goffset)arg2) << 32),
backend);
break;
case G_VFS_DAEMON_SOCKET_PROTOCOL_REQUEST_QUERY_INFO:
attrs = g_strndup (data, data_len);
job = g_vfs_job_query_info_write_new (write_channel,
backend_handle,
attrs,
backend);
g_free (attrs);
break;
default:
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_FAILED,
"Unknown stream command %"G_GUINT32_FORMAT, command);
break;
}
/* Ownership was passed */
g_free (data);
return job;
}
/* Might be called on an i/o thread
*/
void
g_vfs_write_channel_send_seek_offset (GVfsWriteChannel *write_channel,
goffset offset)
{
GVfsDaemonSocketProtocolReply reply;
GVfsChannel *channel;
channel = G_VFS_CHANNEL (write_channel);
reply.type = g_htonl (G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_SEEK_POS);
reply.seq_nr = g_htonl (g_vfs_channel_get_current_seq_nr (channel));
reply.arg1 = g_htonl (offset & 0xffffffff);
reply.arg2 = g_htonl (offset >> 32);
g_vfs_channel_send_reply (channel, &reply, NULL, 0);
}
/* Might be called on an i/o thread
*/
void
g_vfs_write_channel_send_closed (GVfsWriteChannel *write_channel,
const char *etag)
{
GVfsDaemonSocketProtocolReply reply;
GVfsChannel *channel;
channel = G_VFS_CHANNEL (write_channel);
reply.type = g_htonl (G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_CLOSED);
reply.seq_nr = g_htonl (g_vfs_channel_get_current_seq_nr (channel));
reply.arg1 = g_htonl (0);
reply.arg2 = g_htonl (strlen (etag));
g_vfs_channel_send_reply (channel, &reply, etag, strlen (etag));
}
/* Might be called on an i/o thread
*/
void
g_vfs_write_channel_send_written (GVfsWriteChannel *write_channel,
gsize bytes_written)
{
GVfsDaemonSocketProtocolReply reply;
GVfsChannel *channel;
channel = G_VFS_CHANNEL (write_channel);
reply.type = g_htonl (G_VFS_DAEMON_SOCKET_PROTOCOL_REPLY_WRITTEN);
reply.seq_nr = g_htonl (g_vfs_channel_get_current_seq_nr (channel));
reply.arg1 = g_htonl (bytes_written);
reply.arg2 = 0;
g_vfs_channel_send_reply (channel, &reply, NULL, 0);
}
GVfsWriteChannel *
g_vfs_write_channel_new (GVfsBackend *backend,
GPid actual_consumer)
{
return g_object_new (G_VFS_TYPE_WRITE_CHANNEL,
"backend", backend,
"actual-consumer", actual_consumer,
NULL);
}
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