+++ /dev/null
-/*
- * Amanda, The Advanced Maryland Automatic Network Disk Archiver
- * Copyright (c) 2008 Zmanda 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, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "amxfer.h"
-#include "amanda.h"
-#include "device.h"
-
-/*
- * Class declaration
- *
- * This declaration is entirely private; nothing but xfer_source_device() references
- * it directly.
- */
-
-GType xfer_source_device_get_type(void);
-#define XFER_SOURCE_DEVICE_TYPE (xfer_source_device_get_type())
-#define XFER_SOURCE_DEVICE(obj) G_TYPE_CHECK_INSTANCE_CAST((obj), xfer_source_device_get_type(), XferSourceDevice)
-#define XFER_SOURCE_DEVICE_CONST(obj) G_TYPE_CHECK_INSTANCE_CAST((obj), xfer_source_device_get_type(), XferSourceDevice const)
-#define XFER_SOURCE_DEVICE_CLASS(klass) G_TYPE_CHECK_CLASS_CAST((klass), xfer_source_device_get_type(), XferSourceDeviceClass)
-#define IS_XFER_SOURCE_DEVICE(obj) G_TYPE_CHECK_INSTANCE_TYPE((obj), xfer_source_device_get_type ())
-#define XFER_SOURCE_DEVICE_GET_CLASS(obj) G_TYPE_INSTANCE_GET_CLASS((obj), xfer_source_device_get_type(), XferSourceDeviceClass)
-
-static GObjectClass *parent_class = NULL;
-
-/*
- * Main object structure
- */
-
-typedef struct XferSourceDevice {
- XferElement __parent__;
-
- Device *device;
- size_t block_size;
- gboolean cancelled;
-} XferSourceDevice;
-
-/*
- * Class definition
- */
-
-typedef struct {
- XferElementClass __parent__;
-} XferSourceDeviceClass;
-
-/*
- * Implementation
- */
-
-static gpointer
-pull_buffer_impl(
- XferElement *elt,
- size_t *size)
-{
- XferSourceDevice *self = (XferSourceDevice *)elt;
- gpointer buf;
- int result;
- int devsize;
-
- /* indicate EOF on an cancel */
- if (elt->cancelled) {
- *size = 0;
- return NULL;
- }
-
- /* get the device block size */
- if (self->block_size == 0) {
- self->block_size = self->device->block_size;
- }
-
- do {
- buf = g_malloc(self->block_size);
- devsize = (int)self->block_size;
- result = device_read_block(self->device, buf, &devsize);
- *size = devsize;
-
- /* if the buffer was too small, loop around again */
- if (result == 0) {
- g_assert(*size > self->block_size);
- self->block_size = devsize;
- amfree(buf);
- }
- } while (result == 0);
-
- if (result < 0) {
- /* if we're not at EOF, it's an error */
- if (!self->device->is_eof) {
- xfer_element_handle_error(elt,
- _("error reading from %s: %s"),
- self->device->device_name,
- device_error_or_status(self->device));
- }
-
- *size = 0;
- return NULL;
- }
-
- return buf;
-}
-
-static void
-instance_init(
- XferElement *elt)
-{
- elt->can_generate_eof = TRUE;
-}
-
-static void
-class_init(
- XferSourceDeviceClass * selfc)
-{
- XferElementClass *klass = XFER_ELEMENT_CLASS(selfc);
- static xfer_element_mech_pair_t mech_pairs[] = {
- { XFER_MECH_NONE, XFER_MECH_PULL_BUFFER, 0, 1},
- { XFER_MECH_NONE, XFER_MECH_NONE, 0, 0},
- };
-
- klass->pull_buffer = pull_buffer_impl;
-
- klass->perl_class = "Amanda::Xfer::Source::Device";
- klass->mech_pairs = mech_pairs;
-
- parent_class = g_type_class_peek_parent(selfc);
-}
-
-GType
-xfer_source_device_get_type (void)
-{
- static GType type = 0;
-
- if G_UNLIKELY(type == 0) {
- static const GTypeInfo info = {
- sizeof (XferSourceDeviceClass),
- (GBaseInitFunc) NULL,
- (GBaseFinalizeFunc) NULL,
- (GClassInitFunc) class_init,
- (GClassFinalizeFunc) NULL,
- NULL /* class_data */,
- sizeof (XferSourceDevice),
- 0 /* n_preallocs */,
- (GInstanceInitFunc) instance_init,
- NULL
- };
-
- type = g_type_register_static (XFER_ELEMENT_TYPE, "XferSourceDevice", &info, 0);
- }
-
- return type;
-}
-
-/* create an element of this class; prototype is in xfer-element.h */
-XferElement *
-xfer_source_device(
- Device *device)
-{
- XferSourceDevice *self = (XferSourceDevice *)g_object_new(XFER_SOURCE_DEVICE_TYPE, NULL);
- XferElement *elt = XFER_ELEMENT(self);
-
- g_assert(device != NULL);
-
- self->device = device;
-
- return elt;
-}