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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
*
* Copyright (C) 2007-2010 David Zeuthen <zeuthen@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#include <sys/types.h>
#include <pwd.h>
#include <grp.h>
#include <string.h>
#include <stdlib.h>
#include <glib/gstdio.h>
#include "udiskslogging.h"
#include "udiskslinuxswapspace.h"
#include "udiskslinuxblock.h"
#include "udisksdaemon.h"
#include "udiskscleanup.h"
#include "udisksdaemonutil.h"
/**
* SECTION:udiskslinuxswapspace
* @title: UDisksLinuxSwapspace
* @short_description: Swapspace manipulation on Linux
*
* This type provides an implementation of the #UDisksSwapspace interface
* on Linux.
*/
typedef struct _UDisksLinuxSwapspaceClass UDisksLinuxSwapspaceClass;
/**
* UDisksLinuxSwapspace:
*
* The #UDisksLinuxSwapspace structure contains only private data and should
* only be accessed using the provided API.
*/
struct _UDisksLinuxSwapspace
{
UDisksSwapspaceSkeleton parent_instance;
};
struct _UDisksLinuxSwapspaceClass
{
UDisksSwapspaceSkeletonClass parent_class;
};
static void swapspace_iface_init (UDisksSwapspaceIface *iface);
G_DEFINE_TYPE_WITH_CODE (UDisksLinuxSwapspace, udisks_linux_swapspace, UDISKS_TYPE_SWAPSPACE_SKELETON,
G_IMPLEMENT_INTERFACE (UDISKS_TYPE_SWAPSPACE, swapspace_iface_init));
/* ---------------------------------------------------------------------------------------------------- */
static void
udisks_linux_swapspace_init (UDisksLinuxSwapspace *swapspace)
{
g_dbus_interface_skeleton_set_flags (G_DBUS_INTERFACE_SKELETON (swapspace),
G_DBUS_INTERFACE_SKELETON_FLAGS_HANDLE_METHOD_INVOCATIONS_IN_THREAD);
}
static void
udisks_linux_swapspace_class_init (UDisksLinuxSwapspaceClass *klass)
{
}
/**
* udisks_linux_swapspace_new:
*
* Creates a new #UDisksLinuxSwapspace instance.
*
* Returns: A new #UDisksLinuxSwapspace. Free with g_object_unref().
*/
UDisksSwapspace *
udisks_linux_swapspace_new (void)
{
return UDISKS_SWAPSPACE (g_object_new (UDISKS_TYPE_LINUX_SWAPSPACE,
NULL));
}
/* ---------------------------------------------------------------------------------------------------- */
static void
swapspace_start_on_job_completed (UDisksJob *job,
gboolean success,
const gchar *message,
gpointer user_data)
{
GDBusMethodInvocation *invocation = G_DBUS_METHOD_INVOCATION (user_data);
UDisksSwapspace *swapspace;
swapspace = UDISKS_SWAPSPACE (g_dbus_method_invocation_get_user_data (invocation));
if (success)
udisks_swapspace_complete_start (swapspace, invocation);
else
g_dbus_method_invocation_return_error (invocation,
UDISKS_ERROR,
UDISKS_ERROR_FAILED,
"Error activating swap: %s",
message);
}
static gboolean
handle_start (UDisksSwapspace *swapspace,
GDBusMethodInvocation *invocation,
GVariant *options)
{
UDisksObject *object;
UDisksDaemon *daemon;
UDisksBlockDevice *block;
UDisksBaseJob *job;
object = UDISKS_OBJECT (g_dbus_interface_get_object (G_DBUS_INTERFACE (swapspace)));
daemon = udisks_linux_block_get_daemon (UDISKS_LINUX_BLOCK (object));
block = udisks_object_peek_block_device (object);
if (!udisks_daemon_util_check_authorization_sync (daemon,
object,
"org.freedesktop.udisks2.manage-swapspace",
options,
N_("Authentication is required to activate swapspace on $(udisks2.device)"),
invocation))
goto out;
job = udisks_daemon_launch_spawned_job (daemon,
NULL, /* cancellable */
NULL, /* input_string */
"swapon %s",
udisks_block_device_get_device (block));
g_signal_connect (job,
"completed",
G_CALLBACK (swapspace_start_on_job_completed),
invocation);
out:
return TRUE;
}
static void
swapspace_stop_on_job_completed (UDisksJob *job,
gboolean success,
const gchar *message,
gpointer user_data)
{
GDBusMethodInvocation *invocation = G_DBUS_METHOD_INVOCATION (user_data);
UDisksSwapspace *swapspace;
swapspace = UDISKS_SWAPSPACE (g_dbus_method_invocation_get_user_data (invocation));
if (success)
udisks_swapspace_complete_start (swapspace, invocation);
else
g_dbus_method_invocation_return_error (invocation,
UDISKS_ERROR,
UDISKS_ERROR_FAILED,
"Error deactivating swap: %s",
message);
}
static gboolean
handle_stop (UDisksSwapspace *swapspace,
GDBusMethodInvocation *invocation,
GVariant *options)
{
UDisksObject *object;
UDisksDaemon *daemon;
UDisksBlockDevice *block;
UDisksBaseJob *job;
object = UDISKS_OBJECT (g_dbus_interface_get_object (G_DBUS_INTERFACE (swapspace)));
daemon = udisks_linux_block_get_daemon (UDISKS_LINUX_BLOCK (object));
block = udisks_object_peek_block_device (object);
/* Now, check that the user is actually authorized to stop the swap space.
*
* TODO: want nicer authentication message + special treatment if the
* uid that locked the device (e.g. w/o -others).
*/
if (!udisks_daemon_util_check_authorization_sync (daemon,
object,
"org.freedesktop.udisks2.manage-swapspace",
options,
N_("Authentication is required to deactivate swapspace on $(udisks2.device)"),
invocation))
goto out;
job = udisks_daemon_launch_spawned_job (daemon,
NULL, /* cancellable */
NULL, /* input_string */
"swapoff %s",
udisks_block_device_get_device (block));
g_signal_connect (job,
"completed",
G_CALLBACK (swapspace_stop_on_job_completed),
invocation);
out:
return TRUE;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
swapspace_iface_init (UDisksSwapspaceIface *iface)
{
iface->handle_start = handle_start;
iface->handle_stop = handle_stop;
}
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