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gvfs/SOURCES/udisks2-Handle-lockdown-opt...

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From 9fdd59cfda93b508e76770146a8295d0a26b175d Mon Sep 17 00:00:00 2001
From: Ondrej Holy <oholy@redhat.com>
Date: Tue, 14 May 2019 08:46:48 +0200
Subject: [PATCH 1/3] udisks2: Handle lockdown option to disable writing
Handle the new mount-removable-storage-devices-as-read-only option of
org.gnome.desktop.lockdown schema and mount removable devices as read-only
if enabled.
---
monitor/udisks2/gvfsudisks2volume.c | 8 +++++
monitor/udisks2/gvfsudisks2volumemonitor.c | 34 ++++++++++++++++++++++
monitor/udisks2/gvfsudisks2volumemonitor.h | 1 +
3 files changed, 43 insertions(+)
diff --git a/monitor/udisks2/gvfsudisks2volume.c b/monitor/udisks2/gvfsudisks2volume.c
index a509b5dd..b2545058 100644
--- a/monitor/udisks2/gvfsudisks2volume.c
+++ b/monitor/udisks2/gvfsudisks2volume.c
@@ -1093,6 +1093,7 @@ do_mount (GTask *task)
{
MountData *data = g_task_get_task_data (task);
GVariantBuilder builder;
+ GVfsUDisks2Volume *volume = g_task_get_source_object (task);
g_variant_builder_init (&builder, G_VARIANT_TYPE_VARDICT);
if (data->mount_operation == NULL)
@@ -1101,6 +1102,13 @@ do_mount (GTask *task)
"{sv}",
"auth.no_user_interaction", g_variant_new_boolean (TRUE));
}
+ if (gvfs_udisks2_volume_monitor_get_readonly_lockdown (volume->monitor))
+ {
+ g_variant_builder_add (&builder,
+ "{sv}",
+ "options", g_variant_new_string ("ro"));
+
+ }
udisks_filesystem_call_mount (data->filesystem_to_mount,
g_variant_builder_end (&builder),
g_task_get_cancellable (task),
diff --git a/monitor/udisks2/gvfsudisks2volumemonitor.c b/monitor/udisks2/gvfsudisks2volumemonitor.c
index 0a5ce96e..37c81fcf 100644
--- a/monitor/udisks2/gvfsudisks2volumemonitor.c
+++ b/monitor/udisks2/gvfsudisks2volumemonitor.c
@@ -65,6 +65,9 @@ struct _GVfsUDisks2VolumeMonitor
/* we keep volumes/mounts for blank and audio discs separate to handle e.g. mixed discs properly */
GList *disc_volumes;
GList *disc_mounts;
+
+ GSettings *lockdown_settings;
+ gboolean readonly_lockdown;
};
static UDisksClient *get_udisks_client_sync (GError **error);
@@ -140,6 +143,8 @@ gvfs_udisks2_volume_monitor_finalize (GObject *object)
g_list_free_full (monitor->disc_volumes, g_object_unref);
g_list_free_full (monitor->disc_mounts, g_object_unref);
+ g_clear_object (&monitor->lockdown_settings);
+
G_OBJECT_CLASS (gvfs_udisks2_volume_monitor_parent_class)->finalize (object);
}
@@ -304,6 +309,17 @@ gvfs_udisks2_volume_monitor_constructor (GType type,
return ret;
}
+static void
+lockdown_settings_changed (GSettings *settings,
+ gchar *key,
+ gpointer user_data)
+{
+ GVfsUDisks2VolumeMonitor *monitor = GVFS_UDISKS2_VOLUME_MONITOR (user_data);
+
+ monitor->readonly_lockdown = g_settings_get_boolean (settings,
+ "mount-removable-storage-devices-as-read-only");
+}
+
static void
gvfs_udisks2_volume_monitor_init (GVfsUDisks2VolumeMonitor *monitor)
{
@@ -325,6 +341,15 @@ gvfs_udisks2_volume_monitor_init (GVfsUDisks2VolumeMonitor *monitor)
G_CALLBACK (mountpoints_changed),
monitor);
+ monitor->lockdown_settings = g_settings_new ("org.gnome.desktop.lockdown");
+ monitor->readonly_lockdown = g_settings_get_boolean (monitor->lockdown_settings,
+ "mount-removable-storage-devices-as-read-only");
+ g_signal_connect_object (monitor->lockdown_settings,
+ "changed",
+ G_CALLBACK (lockdown_settings_changed),
+ monitor,
+ 0);
+
update_all (monitor, FALSE, TRUE);
}
@@ -388,6 +413,15 @@ gvfs_udisks2_volume_monitor_get_gudev_client (GVfsUDisks2VolumeMonitor *monitor)
/* ---------------------------------------------------------------------------------------------------- */
+gboolean
+gvfs_udisks2_volume_monitor_get_readonly_lockdown (GVfsUDisks2VolumeMonitor *monitor)
+{
+ g_return_val_if_fail (GVFS_IS_UDISKS2_VOLUME_MONITOR (monitor), FALSE);
+ return monitor->readonly_lockdown;
+}
+
+/* ---------------------------------------------------------------------------------------------------- */
+
void
gvfs_udisks2_volume_monitor_update (GVfsUDisks2VolumeMonitor *monitor)
{
diff --git a/monitor/udisks2/gvfsudisks2volumemonitor.h b/monitor/udisks2/gvfsudisks2volumemonitor.h
index 7f0215dc..751a0236 100644
--- a/monitor/udisks2/gvfsudisks2volumemonitor.h
+++ b/monitor/udisks2/gvfsudisks2volumemonitor.h
@@ -49,6 +49,7 @@ GVolumeMonitor *gvfs_udisks2_volume_monitor_new (void);
UDisksClient *gvfs_udisks2_volume_monitor_get_udisks_client (GVfsUDisks2VolumeMonitor *monitor);
void gvfs_udisks2_volume_monitor_update (GVfsUDisks2VolumeMonitor *monitor);
GUdevClient *gvfs_udisks2_volume_monitor_get_gudev_client (GVfsUDisks2VolumeMonitor *monitor);
+gboolean gvfs_udisks2_volume_monitor_get_readonly_lockdown (GVfsUDisks2VolumeMonitor *monitor);
G_END_DECLS
--
2.21.0