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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2013 Ross Lagerwall
*
* 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.
*/
#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 "gvfswritechannel.h"
#include "gvfsjobtruncate.h"
#include "gvfsdaemonutils.h"
G_DEFINE_TYPE (GVfsJobTruncate, g_vfs_job_truncate, 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_truncate_finalize (GObject *object)
{
GVfsJobTruncate *job;
job = G_VFS_JOB_TRUNCATE (object);
g_object_unref (job->channel);
if (G_OBJECT_CLASS (g_vfs_job_truncate_parent_class)->finalize)
(*G_OBJECT_CLASS (g_vfs_job_truncate_parent_class)->finalize) (object);
}
static void
g_vfs_job_truncate_class_init (GVfsJobTruncateClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GVfsJobClass *job_class = G_VFS_JOB_CLASS (klass);
gobject_class->finalize = g_vfs_job_truncate_finalize;
job_class->run = run;
job_class->try = try;
job_class->send_reply = send_reply;
}
static void
g_vfs_job_truncate_init (GVfsJobTruncate *job)
{
}
GVfsJob *
g_vfs_job_truncate_new (GVfsWriteChannel *channel,
GVfsBackendHandle handle,
goffset size,
GVfsBackend *backend)
{
GVfsJobTruncate *job;
job = g_object_new (G_VFS_TYPE_JOB_TRUNCATE, NULL);
job->backend = backend;
job->channel = g_object_ref (channel);
job->handle = handle;
job->size = size;
return G_VFS_JOB (job);
}
/* Might be called on an i/o thread */
static void
send_reply (GVfsJob *job)
{
GVfsJobTruncate *op_job = G_VFS_JOB_TRUNCATE (job);
g_debug ("send_reply(%p), failed=%d (%s)\n", job, job->failed,
job->failed ? job->error->message : "");
if (job->failed)
g_vfs_channel_send_error (G_VFS_CHANNEL (op_job->channel), job->error);
else
g_vfs_write_channel_send_truncated (op_job->channel);
}
static void
run (GVfsJob *job)
{
GVfsJobTruncate *op_job = G_VFS_JOB_TRUNCATE (job);
GVfsBackendClass *class = G_VFS_BACKEND_GET_CLASS (op_job->backend);
if (class->truncate)
class->truncate (op_job->backend, op_job, op_job->handle, op_job->size);
else
g_vfs_job_failed (job, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
}
static gboolean
try (GVfsJob *job)
{
GVfsJobTruncate *op_job = G_VFS_JOB_TRUNCATE (job);
GVfsBackendClass *class = G_VFS_BACKEND_GET_CLASS (op_job->backend);
if (class->try_truncate)
return class->try_truncate (op_job->backend,
op_job,
op_job->handle,
op_job->size);
else
return FALSE;
}
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