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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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include <config.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <glib.h>
#include <glib/gi18n.h>
#include "gvfsreadchannel.h"
#include "gvfsjobseekread.h"
#include "gvfsdaemonutils.h"
G_DEFINE_TYPE (GVfsJobSeekRead, g_vfs_job_seek_read, G_VFS_TYPE_JOB)
static void run (GVfsJob *job);
static gboolean try (GVfsJob *job);
static void send_reply (GVfsJob *job);
static void
g_vfs_job_seek_read_finalize (GObject *object)
{
GVfsJobSeekRead *job;
job = G_VFS_JOB_SEEK_READ (object);
g_object_unref (job->channel);
if (G_OBJECT_CLASS (g_vfs_job_seek_read_parent_class)->finalize)
(*G_OBJECT_CLASS (g_vfs_job_seek_read_parent_class)->finalize) (object);
}
static void
g_vfs_job_seek_read_class_init (GVfsJobSeekReadClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GVfsJobClass *job_class = G_VFS_JOB_CLASS (klass);
gobject_class->finalize = g_vfs_job_seek_read_finalize;
job_class->run = run;
job_class->try = try;
job_class->send_reply = send_reply;
}
static void
g_vfs_job_seek_read_init (GVfsJobSeekRead *job)
{
}
GVfsJob *
g_vfs_job_seek_read_new (GVfsReadChannel *channel,
GVfsBackendHandle handle,
GSeekType seek_type,
goffset offset,
GVfsBackend *backend)
{
GVfsJobSeekRead *job;
job = g_object_new (G_VFS_TYPE_JOB_SEEK_READ,
NULL);
job->backend = backend;
job->channel = g_object_ref (channel);
job->handle = handle;
job->requested_offset = offset;
job->seek_type = seek_type;
return G_VFS_JOB (job);
}
/* Might be called on an i/o thread */
static void
send_reply (GVfsJob *job)
{
GVfsJobSeekRead *op_job = G_VFS_JOB_SEEK_READ (job);
g_debug ("job_seek_read send reply, pos %d\n", (int)op_job->final_offset);
if (job->failed)
g_vfs_channel_send_error (G_VFS_CHANNEL (op_job->channel), job->error);
else
{
g_vfs_read_channel_send_seek_offset (op_job->channel,
op_job->final_offset);
}
}
static void
run (GVfsJob *job)
{
GVfsJobSeekRead *op_job = G_VFS_JOB_SEEK_READ (job);
GVfsBackendClass *class = G_VFS_BACKEND_GET_CLASS (op_job->backend);
if (class->seek_on_read == NULL)
{
g_vfs_job_failed (job, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported by backend"));
return;
}
class->seek_on_read (op_job->backend,
op_job,
op_job->handle,
op_job->requested_offset,
op_job->seek_type);
}
static gboolean
try (GVfsJob *job)
{
GVfsJobSeekRead *op_job = G_VFS_JOB_SEEK_READ (job);
GVfsBackendClass *class = G_VFS_BACKEND_GET_CLASS (op_job->backend);
if (class->try_seek_on_read == NULL)
return FALSE;
return class->try_seek_on_read (op_job->backend,
op_job,
op_job->handle,
op_job->requested_offset,
op_job->seek_type);
}
void
g_vfs_job_seek_read_set_offset (GVfsJobSeekRead *job,
goffset offset)
{
job->final_offset = offset;
}
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