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udiskslinuxblock.c
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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
*
*/
#define _GNU_SOURCE /* for O_DIRECT */
#include "config.h"
#include <glib/gi18n-lib.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pwd.h>
#include <grp.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <mntent.h>
#include <glib/gstdio.h>
#include <gio/gunixfdlist.h>
#include <libmount/libmount.h>
#include <blkid/blkid.h>
#include <blockdev/part.h>
#include <blockdev/fs.h>
#include <blockdev/crypto.h>
#include <blockdev/swap.h>
#include "udiskslogging.h"
#include "udiskslinuxblock.h"
#include "udiskslinuxblockobject.h"
#include "udiskslinuxdriveobject.h"
#include "udisksdaemon.h"
#include "udisksstate.h"
#include "udisksprivate.h"
#include "udisksconfigmanager.h"
#include "udisksdaemonutil.h"
#include "udiskslinuxprovider.h"
#include "udisksfstabentry.h"
#include "udiskscrypttabmonitor.h"
#include "udiskscrypttabentry.h"
#include "udisksdaemonutil.h"
#include "udisksbasejob.h"
#include "udiskssimplejob.h"
#include "udiskslinuxdriveata.h"
#include "udiskslinuxmdraidobject.h"
#include "udiskslinuxdevice.h"
#include "udiskslinuxpartition.h"
#include "udiskslinuxencrypted.h"
#include "udiskslinuxencryptedhelpers.h"
#include "udiskslinuxpartitiontable.h"
#include "udiskslinuxfilesystemhelpers.h"
#include "udisksutabmonitor.h"
#include "udisksutabentry.h"
/**
* SECTION:udiskslinuxblock
* @title: UDisksLinuxBlock
* @short_description: Linux implementation of #UDisksBlock
*
* This type provides an implementation of the #UDisksBlock
* interface on Linux.
*/
typedef struct _UDisksLinuxBlockClass UDisksLinuxBlockClass;
/**
* UDisksLinuxBlock:
*
* The #UDisksLinuxBlock structure contains only private data and should
* only be accessed using the provided API.
*/
struct _UDisksLinuxBlock
{
UDisksBlockSkeleton parent_instance;
/* only allow single cryptsetup call at once */
GMutex encrypted_lock;
};
struct _UDisksLinuxBlockClass
{
UDisksBlockSkeletonClass parent_class;
};
static void block_iface_init (UDisksBlockIface *iface);
G_DEFINE_TYPE_WITH_CODE (UDisksLinuxBlock, udisks_linux_block, UDISKS_TYPE_BLOCK_SKELETON,
G_IMPLEMENT_INTERFACE (UDISKS_TYPE_BLOCK, block_iface_init));
/* ---------------------------------------------------------------------------------------------------- */
static void
udisks_linux_block_init (UDisksLinuxBlock *block)
{
g_mutex_init (&(block->encrypted_lock));
g_dbus_interface_skeleton_set_flags (G_DBUS_INTERFACE_SKELETON (block),
G_DBUS_INTERFACE_SKELETON_FLAGS_HANDLE_METHOD_INVOCATIONS_IN_THREAD);
}
static void
udisks_linux_block_finalize (GObject *object)
{
UDisksLinuxBlock *block = UDISKS_LINUX_BLOCK (object);
g_mutex_clear (&(block->encrypted_lock));
if (G_OBJECT_CLASS (udisks_linux_block_parent_class)->finalize != NULL)
G_OBJECT_CLASS (udisks_linux_block_parent_class)->finalize (object);
}
static void
udisks_linux_block_class_init (UDisksLinuxBlockClass *klass)
{
GObjectClass *gobject_class;
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = udisks_linux_block_finalize;
}
/**
* udisks_linux_block_new:
*
* Creates a new #UDisksLinuxBlock instance.
*
* Returns: A new #UDisksLinuxBlock. Free with g_object_unref().
*/
UDisksBlock *
udisks_linux_block_new (void)
{
return UDISKS_BLOCK (g_object_new (UDISKS_TYPE_LINUX_BLOCK,
NULL));
}
/* ---------------------------------------------------------------------------------------------------- */
static gchar *
get_sysfs_attr (GUdevDevice *device,
const gchar *attr)
{
gchar *filename = NULL;
gchar *value = NULL;
gboolean ret = FALSE;
GError *error = NULL;
filename = g_strconcat (g_udev_device_get_sysfs_path (device),
"/",
attr,
NULL);
ret = g_file_get_contents (filename,
&value,
NULL,
&error);
if (!ret)
{
udisks_debug ("Failed to read sysfs attribute %s: %s", attr, error->message);
g_clear_error (&error);
}
g_free (filename);
return value;
}
/* ---------------------------------------------------------------------------------------------------- */
static UDisksLinuxBlockObject *
find_block_device_by_sysfs_path (GDBusObjectManagerServer *object_manager,
const gchar *sysfs_path)
{
UDisksLinuxBlockObject *ret;
GList *objects;
GList *l;
ret = NULL;
objects = g_dbus_object_manager_get_objects (G_DBUS_OBJECT_MANAGER (object_manager));
for (l = objects; l != NULL; l = l->next)
{
GDBusObjectSkeleton *object = G_DBUS_OBJECT_SKELETON (l->data);
UDisksLinuxDevice *device;
if (!UDISKS_IS_LINUX_BLOCK_OBJECT (object))
continue;
device = udisks_linux_block_object_get_device (UDISKS_LINUX_BLOCK_OBJECT (object));
if (g_strcmp0 (sysfs_path, g_udev_device_get_sysfs_path (device->udev_device)) == 0)
{
ret = g_object_ref (UDISKS_LINUX_BLOCK_OBJECT (object));
g_object_unref (device);
goto out;
}
g_object_unref (device);
}
out:
g_list_free_full (objects, g_object_unref);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
static gchar *
find_drive (GDBusObjectManagerServer *object_manager,
GUdevDevice *block_device,
UDisksDrive **out_drive)
{
GUdevDevice *whole_disk_block_device;
const gchar *whole_disk_block_device_sysfs_path;
gchar **nvme_ctrls = NULL;
gchar *ret;
GList *objects = NULL;
GList *l;
ret = NULL;
if (g_strcmp0 (g_udev_device_get_devtype (block_device), "disk") == 0)
whole_disk_block_device = g_object_ref (block_device);
else
whole_disk_block_device = g_udev_device_get_parent_with_subsystem (block_device, "block", "disk");
if (whole_disk_block_device == NULL)
goto out;
whole_disk_block_device_sysfs_path = g_udev_device_get_sysfs_path (whole_disk_block_device);
/* check for NVMe */
if (g_strcmp0 (g_udev_device_get_subsystem (whole_disk_block_device), "block") == 0)
{
GUdevDevice *parent_device;
parent_device = g_udev_device_get_parent (whole_disk_block_device);
if (parent_device && g_udev_device_has_sysfs_attr (parent_device, "subsysnqn") &&
g_str_has_prefix (g_udev_device_get_subsystem (parent_device), "nvme"))
{
gchar *subsysnqn_p;
/* 'parent_device' is a nvme subsystem,
* 'whole_disk_block_device' is a namespace
*/
subsysnqn_p = g_strdup (g_udev_device_get_sysfs_attr (parent_device, "subsysnqn"));
if (subsysnqn_p)
g_strchomp (subsysnqn_p);
nvme_ctrls = bd_nvme_find_ctrls_for_ns (whole_disk_block_device_sysfs_path, subsysnqn_p,
NULL, NULL, NULL);
g_free (subsysnqn_p);
}
g_clear_object (&parent_device);
}
objects = g_dbus_object_manager_get_objects (G_DBUS_OBJECT_MANAGER (object_manager));
for (l = objects; l != NULL; l = l->next)
{
GDBusObjectSkeleton *object = G_DBUS_OBJECT_SKELETON (l->data);
GList *drive_devices;
GList *j;
if (!UDISKS_IS_LINUX_DRIVE_OBJECT (object))
continue;
drive_devices = udisks_linux_drive_object_get_devices (UDISKS_LINUX_DRIVE_OBJECT (object));
for (j = drive_devices; j != NULL; j = j->next)
{
UDisksLinuxDevice *drive_device = UDISKS_LINUX_DEVICE (j->data);
const gchar *drive_sysfs_path;
drive_sysfs_path = g_udev_device_get_sysfs_path (drive_device->udev_device);
if (g_strcmp0 (whole_disk_block_device_sysfs_path, drive_sysfs_path) == 0 ||
(nvme_ctrls && g_strv_contains ((const gchar * const *) nvme_ctrls, drive_sysfs_path)))
{
if (out_drive != NULL)
*out_drive = udisks_object_get_drive (UDISKS_OBJECT (object));
ret = g_strdup (g_dbus_object_get_object_path (G_DBUS_OBJECT (object)));
g_list_free_full (drive_devices, g_object_unref);
/* FIXME: NVMe namespace may be provided by multiple controllers within
* a NVMe subsystem, however the org.freedesktop.UDisks2.Block.Drive
* property may only contain single object path.
*/
goto out;
}
}
g_list_free_full (drive_devices, g_object_unref);
}
out:
g_list_free_full (objects, g_object_unref);
g_clear_object (&whole_disk_block_device);
if (nvme_ctrls)
g_strfreev (nvme_ctrls);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
static UDisksLinuxMDRaidObject *
find_mdraid (GDBusObjectManagerServer *object_manager,
const gchar *md_uuid)
{
UDisksLinuxMDRaidObject *ret = NULL;
GList *objects = NULL, *l;
objects = g_dbus_object_manager_get_objects (G_DBUS_OBJECT_MANAGER (object_manager));
for (l = objects; l != NULL; l = l->next)
{
GDBusObjectSkeleton *object = G_DBUS_OBJECT_SKELETON (l->data);
if (UDISKS_IS_LINUX_MDRAID_OBJECT (object))
{
UDisksMDRaid *mdraid = udisks_object_get_mdraid (UDISKS_OBJECT (object));
if (mdraid != NULL)
{
if (g_strcmp0 (udisks_mdraid_get_uuid (mdraid), md_uuid) == 0)
{
ret = UDISKS_LINUX_MDRAID_OBJECT (g_object_ref (object));
g_object_unref (mdraid);
goto out;
}
g_object_unref (mdraid);
}
}
}
out:
g_list_free_full (objects, g_object_unref);
return ret;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
update_mdraid (UDisksLinuxBlock *block,
UDisksLinuxDevice *device,
UDisksDrive *drive,
GDBusObjectManagerServer *object_manager)
{
UDisksBlock *iface = UDISKS_BLOCK (block);
const gchar *uuid;
const gchar *objpath_mdraid = "/";
const gchar *objpath_mdraid_member = "/";
UDisksLinuxMDRaidObject *object = NULL;
uuid = g_udev_device_get_property (device->udev_device, "UDISKS_MD_UUID");
if (uuid != NULL && strlen (uuid) > 0)
{
object = find_mdraid (object_manager, uuid);
if (object != NULL)
{
objpath_mdraid = g_dbus_object_get_object_path (G_DBUS_OBJECT (object));
g_clear_object (&object);
}
}
uuid = g_udev_device_get_property (device->udev_device, "UDISKS_MD_MEMBER_UUID");
if (uuid != NULL && strlen (uuid) > 0)
{
object = find_mdraid (object_manager, uuid);
if (object != NULL)
{
objpath_mdraid_member = g_dbus_object_get_object_path (G_DBUS_OBJECT (object));
g_clear_object (&object);
}
}
udisks_block_set_mdraid (iface, objpath_mdraid);
udisks_block_set_mdraid_member (iface, objpath_mdraid_member);
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* udisks_linux_block_matches_id:
* @block: A #UDisksLinuxBlock.
* @device_path: A device path string.
*
* Compares block device identifiers and returns %TRUE if match is found. The @device_path
* argument may be a device file or a common KEY=VALUE identifier as used e.g. in /etc/fstab
* or /etc/crypttab.
*
* The @device_path should be a demangled (unquoted/unencoded/unescaped) string.
*
* Returns: %TRUE when identifiers do match, %FALSE otherwise.
*/
gboolean
udisks_linux_block_matches_id (UDisksLinuxBlock *block,
const gchar *device_path)
{
gchar *tag_type = NULL;
gchar *tag_val = NULL;
gboolean ret = FALSE;
g_return_val_if_fail (device_path != NULL && strlen (device_path) > 0, FALSE);
if (blkid_parse_tag_string (device_path, &tag_type, &tag_val) != 0 || !tag_type || !tag_val)
{
/* the "NAME=value" string parsing failed, treat it as a device file */
const gchar *const *symlinks;
g_free (tag_type);
g_free (tag_val);
if (g_strcmp0 (device_path, udisks_block_get_device (UDISKS_BLOCK (block))) == 0)
return TRUE;
symlinks = udisks_block_get_symlinks (UDISKS_BLOCK (block));
if (symlinks && g_strv_contains (symlinks, device_path))
return TRUE;
return FALSE;
}
ret = g_str_equal (tag_type, "UUID") && g_strcmp0 (tag_val, udisks_block_get_id_uuid (UDISKS_BLOCK (block))) == 0;
ret = ret || (g_str_equal (tag_type, "LABEL") && g_strcmp0 (tag_val, udisks_block_get_id_label (UDISKS_BLOCK (block))) == 0);
if (!ret && (g_str_equal (tag_type, "PARTUUID") || g_str_equal (tag_type, "PARTLABEL")))
{
UDisksObject *object;
UDisksPartition *partition;
object = udisks_daemon_util_dup_object (block, NULL);
if (object != NULL)
{
partition = udisks_object_peek_partition (object);
if (partition != NULL)
{
ret = (g_str_equal (tag_type, "PARTUUID") && g_strcmp0 (tag_val, udisks_partition_get_uuid (partition)) == 0) ||
(g_str_equal (tag_type, "PARTLABEL") && g_strcmp0 (tag_val, udisks_partition_get_name (partition)) == 0);
}
g_object_unref (object);
}
}
g_free (tag_type);
g_free (tag_val);
return ret;
}
static GList *
find_fstab_entries (UDisksDaemon *daemon,
UDisksLinuxBlock *block,
const gchar *needle)
{
struct libmnt_table *table;
struct libmnt_iter* iter;
struct libmnt_fs *fs = NULL;
GList *ret = NULL;
table = mnt_new_table ();
if (mnt_table_parse_fstab (table, NULL) < 0)
{
mnt_free_table (table);
return NULL;
}
iter = mnt_new_iter (MNT_ITER_FORWARD);
while (mnt_table_next_fs (table, iter, &fs) == 0)
{
UDisksFstabEntry *entry;
if (block != NULL)
{
if (! udisks_linux_block_matches_id (block, mnt_fs_get_source (fs)))
continue;
}
else if (needle != NULL)
{
const char *opts;
opts = mnt_fs_get_options (fs);
if (! opts || g_strstr_len (opts, -1, needle) == NULL)
continue;
}
entry = _udisks_fstab_entry_new_from_mnt_fs (fs);
ret = g_list_prepend (ret, entry);
}
mnt_free_iter (iter);
mnt_free_table (table);
return g_list_reverse (ret);
}
static GList *
find_crypttab_entries_for_device (UDisksLinuxBlock *block,
UDisksDaemon *daemon)
{
GList *entries;
GList *l;
GList *ret;
ret = NULL;
/* if this is too slow, we could add lookup methods to UDisksCrypttabMonitor... */
entries = udisks_crypttab_monitor_get_entries (udisks_daemon_get_crypttab_monitor (daemon));
for (l = entries; l != NULL; l = l->next)
{
UDisksCrypttabEntry *entry = UDISKS_CRYPTTAB_ENTRY (l->data);
const gchar *device;
device = udisks_crypttab_entry_get_device (entry);
if (udisks_linux_block_matches_id (block, device))
ret = g_list_prepend (ret, g_object_ref (entry));
}
g_list_free_full (entries, g_object_unref);
return ret;
}
static GList *
find_crypttab_entries_for_needle (gchar *needle,
UDisksDaemon *daemon)
{
GList *entries;
GList *l;
GList *ret;
ret = NULL;
entries = udisks_crypttab_monitor_get_entries (udisks_daemon_get_crypttab_monitor (daemon));
for (l = entries; l != NULL; l = l->next)
{
UDisksCrypttabEntry *entry = UDISKS_CRYPTTAB_ENTRY (l->data);
const gchar *opts = NULL;
opts = udisks_crypttab_entry_get_options (entry);
if (opts && strstr(opts, needle))
ret = g_list_prepend (ret, g_object_ref (entry));
}
g_list_free_full (entries, g_object_unref);
return ret;
}
static GList *
find_utab_entries_for_device (UDisksLinuxBlock *block,
UDisksDaemon *daemon)
{
GSList *entries, *l;
GList *ret;
ret = NULL;
/* if this is too slow, we could add lookup methods to UDisksUtabMonitor... */
entries = udisks_utab_monitor_get_entries (udisks_daemon_get_utab_monitor (daemon));
for (l = entries; l != NULL; l = l->next)
{
UDisksUtabEntry *entry = UDISKS_UTAB_ENTRY (l->data);
const gchar *source = udisks_utab_entry_get_source (entry);
if (!g_str_has_prefix (source, "/dev"))
continue;
if (udisks_linux_block_matches_id (block, source))
ret = g_list_prepend (ret, g_object_ref (entry));
}
g_slist_free_full (entries, g_object_unref);
return ret;
}
static void
add_fstab_entry (GVariantBuilder *builder,
UDisksFstabEntry *entry)
{
GVariantBuilder dict_builder;
g_variant_builder_init (&dict_builder, G_VARIANT_TYPE_VARDICT);
g_variant_builder_add (&dict_builder, "{sv}", "fsname",
g_variant_new_bytestring (udisks_fstab_entry_get_fsname (entry)));
g_variant_builder_add (&dict_builder, "{sv}", "dir",
g_variant_new_bytestring (udisks_fstab_entry_get_dir (entry)));
g_variant_builder_add (&dict_builder, "{sv}", "type",
g_variant_new_bytestring (udisks_fstab_entry_get_fstype (entry)));
g_variant_builder_add (&dict_builder, "{sv}", "opts",
g_variant_new_bytestring (udisks_fstab_entry_get_opts (entry)));
g_variant_builder_add (&dict_builder, "{sv}", "freq",
g_variant_new_int32 (udisks_fstab_entry_get_freq (entry)));
g_variant_builder_add (&dict_builder, "{sv}", "passno",
g_variant_new_int32 (udisks_fstab_entry_get_passno (entry)));
g_variant_builder_add (builder,
"(sa{sv})",
"fstab", &dict_builder);
}
static gboolean
add_crypttab_entry (GVariantBuilder *builder,
UDisksCrypttabEntry *entry,
gboolean include_secrets,
GError **error)
{
GVariantBuilder dict_builder;
const gchar *passphrase_path;
const gchar *options;
gchar *passphrase_contents;
gsize passphrase_contents_length;
passphrase_path = udisks_crypttab_entry_get_passphrase_path (entry);
if (passphrase_path == NULL || g_strcmp0 (passphrase_path, "none") == 0 || g_strcmp0 (passphrase_path, "-") == 0)
passphrase_path = "";
passphrase_contents = NULL;
if (!(g_strcmp0 (passphrase_path, "") == 0 || g_str_has_prefix (passphrase_path, "/dev")))
{
if (include_secrets)
{
if (!g_file_get_contents (passphrase_path,
&passphrase_contents,
&passphrase_contents_length,
error))
{
g_prefix_error (error,
"Error loading secrets from file `%s' referenced in /etc/crypttab entry: ",
passphrase_path);
return FALSE;
}
}
}
options = udisks_crypttab_entry_get_options (entry);
if (options == NULL)
options = "";
g_variant_builder_init (&dict_builder, G_VARIANT_TYPE_VARDICT);
g_variant_builder_add (&dict_builder, "{sv}", "name",
g_variant_new_bytestring (udisks_crypttab_entry_get_name (entry)));
g_variant_builder_add (&dict_builder, "{sv}", "device",
g_variant_new_bytestring (udisks_crypttab_entry_get_device (entry)));
g_variant_builder_add (&dict_builder, "{sv}", "passphrase-path",
g_variant_new_bytestring (passphrase_path));
if (passphrase_contents != NULL)
{
g_variant_builder_add (&dict_builder, "{sv}", "passphrase-contents",
g_variant_new_bytestring (passphrase_contents));
}
g_variant_builder_add (&dict_builder, "{sv}", "options",
g_variant_new_bytestring (options));
g_variant_builder_add (builder,
"(sa{sv})",
"crypttab", &dict_builder);
if (passphrase_contents != NULL)
{
memset (passphrase_contents, '\0', passphrase_contents_length);
g_free (passphrase_contents);
}
return TRUE;
}
/* returns a floating GVariant */
static GVariant *
calculate_configuration (UDisksLinuxBlock *block,
UDisksDaemon *daemon,
gboolean include_secrets,
GError **error)
{
GList *entries;
GList *l;
GVariantBuilder builder;
GVariant *ret;
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
ret = NULL;
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a(sa{sv})"));
/* First the /etc/fstab entries */
entries = find_fstab_entries (daemon, block, NULL);
for (l = entries; l != NULL; l = l->next)
add_fstab_entry (&builder, UDISKS_FSTAB_ENTRY (l->data));
g_list_free_full (entries, g_object_unref);
/* Then the /etc/crypttab entries (currently only supported for LUKS) */
if (udisks_linux_block_is_luks (UDISKS_BLOCK (block)))
{
entries = find_crypttab_entries_for_device (block, daemon);
for (l = entries; l != NULL; l = l->next)
{
if (!add_crypttab_entry (&builder, UDISKS_CRYPTTAB_ENTRY (l->data), include_secrets, error))
{
g_variant_builder_clear (&builder);
g_list_free_full (entries, g_object_unref);
goto out;
}
}
g_list_free_full (entries, g_object_unref);
}
ret = g_variant_builder_end (&builder);
out:
return ret;
}
static gchar **
calculate_userspace_mount_options (UDisksLinuxBlock *block,
UDisksDaemon *daemon)
{
GList *entries, *l;
GPtrArray *ret;
ret = g_ptr_array_new ();
/* Get the /run/mounts/utab entries */
entries = find_utab_entries_for_device (block, daemon);
for (l = entries; l != NULL; l = l->next) {
UDisksUtabEntry *entry = UDISKS_UTAB_ENTRY (l->data);
const gchar * const *opts = udisks_utab_entry_get_opts (entry);
for (gint i = 0; opts[i] != NULL; ++i)
g_ptr_array_add (ret, g_strdup (opts[i]));
}
g_ptr_array_add (ret, NULL);
g_list_free_full (entries, g_object_unref);
return (gchar **) g_ptr_array_free (ret, FALSE);
}
static void
update_configuration (UDisksLinuxBlock *block,
UDisksDaemon *daemon)
{
GVariant *configuration;
GError *error;
error = NULL;
configuration = calculate_configuration (block, daemon, FALSE, &error);
if (configuration == NULL)
{
udisks_warning ("Error loading configuration: %s (%s, %d)",
error->message, g_quark_to_string (error->domain), error->code);
g_clear_error (&error);
configuration = g_variant_new ("a(sa{sv})", NULL);
}
udisks_block_set_configuration (UDISKS_BLOCK (block), configuration);
g_dbus_interface_skeleton_flush (G_DBUS_INTERFACE_SKELETON (block));
}
static void
update_userspace_mount_options (UDisksLinuxBlock *block,
UDisksDaemon *daemon)
{
gchar **opts;
opts = calculate_userspace_mount_options (block, daemon);
udisks_block_set_userspace_mount_options (UDISKS_BLOCK (block), (const gchar * const*) opts);
g_strfreev (opts);
}
/* ---------------------------------------------------------------------------------------------------- */
/* returns a floating GVariant */
static GVariant *
find_configurations (gchar *needle,
UDisksDaemon *daemon,
gboolean include_secrets,
GError **error)
{
GList *entries;
GList *l;
GVariantBuilder builder;
GVariant *ret;
udisks_debug ("Looking for %s", needle);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
ret = NULL;
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a(sa{sv})"));
/* First the /etc/fstab entries */
entries = find_fstab_entries (daemon, NULL, needle);
for (l = entries; l != NULL; l = l->next)
add_fstab_entry (&builder, UDISKS_FSTAB_ENTRY (l->data));
g_list_free_full (entries, g_object_unref);
/* Then the /etc/crypttab entries */
entries = find_crypttab_entries_for_needle (needle, daemon);
for (l = entries; l != NULL; l = l->next)
{
if (!add_crypttab_entry (&builder, UDISKS_CRYPTTAB_ENTRY (l->data), include_secrets, error))
{
g_variant_builder_clear (&builder);
g_list_free_full (entries, g_object_unref);
goto out;
}
}
g_list_free_full (entries, g_object_unref);
ret = g_variant_builder_end (&builder);
out:
return ret;
}
GVariant *
udisks_linux_find_child_configuration (UDisksDaemon *daemon,
const gchar *uuid)
{
GError *error = NULL;
gchar *needle = g_strdup_printf ("x-parent=%s", uuid);
GVariant *res = find_configurations (needle, daemon, FALSE, &error);
if (res == NULL)
{
udisks_warning ("Error loading configuration: %s (%s, %d)",
error->message, g_quark_to_string (error->domain), error->code);
g_clear_error (&error);
res = g_variant_new ("a(sa{sv})", NULL);
}
g_free (needle);
return res;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
update_hints (UDisksDaemon *daemon,
UDisksLinuxBlock *block,
UDisksLinuxDevice *device,
UDisksDrive *drive)
{
UDisksBlock *iface = UDISKS_BLOCK (block);
gboolean hint_partitionable;
gboolean hint_system;
gboolean hint_ignore;
gboolean hint_auto;
const gchar *hint_name;
const gchar *hint_icon_name;
const gchar *hint_symbolic_icon_name;
const gchar *device_file;
GList *fstab_entries;
GList *l;
/* very conservative defaults */
hint_partitionable = TRUE;
hint_system = TRUE;
hint_ignore = FALSE;
hint_auto = FALSE;
hint_name = NULL;
hint_icon_name = NULL;
hint_symbolic_icon_name = NULL;
device_file = g_udev_device_get_device_file (device->udev_device);
/* Provide easy access to _only_ the following devices
*
* - anything connected via known local buses (e.g. USB or Firewire, MMC or MemoryStick)
* - any device with removable media
*
* Be careful when extending this list as we don't want to automount
* the world when (inadvertently) connecting to a SAN.
*/
if (drive != NULL)
{
const gchar *connection_bus;
gboolean removable;
connection_bus = udisks_drive_get_connection_bus (drive);
removable = udisks_drive_get_media_removable (drive);
if (removable ||
g_strcmp0 (connection_bus, "usb") == 0 ||
g_strcmp0 (connection_bus, "ieee1394") == 0 ||
g_str_has_prefix (device_file, "/dev/msblk") ||
g_str_has_prefix (device_file, "/dev/mspblk"))
{
hint_system = FALSE;
hint_auto = TRUE;
}
}
/* Floppy drives are not partitionable and should never be auto-mounted */
if (g_str_has_prefix (device_file, "/dev/fd"))
{
hint_system = FALSE;
hint_partitionable = FALSE;
hint_auto = FALSE;
}
/* CD-ROM media / drives are not partitionable, at least not here on Linux */
if (g_udev_device_get_property_as_boolean (device->udev_device, "ID_CDROM"))
hint_partitionable = FALSE;
/* device-mapper devices are not partitionable (TODO: for multipath, they are via kpartx(8) hacks) */
if (g_str_has_prefix (g_udev_device_get_name (device->udev_device), "dm-"))
hint_partitionable = FALSE;
/* Check fstab entries */
fstab_entries = find_fstab_entries (daemon, block, NULL);
for (l = fstab_entries; l != NULL; l = l->next)
{
UDisksFstabEntry *entry = UDISKS_FSTAB_ENTRY (l->data);
/* Honour the sysadmin-specified 'noauto' mount option */
if (udisks_fstab_entry_has_opt (entry, "+noauto"))
hint_auto = FALSE;
}
g_list_free_full (fstab_entries, g_object_unref);
/* TODO: set ignore to TRUE for physical paths belonging to a drive with multiple paths */
/* Override from UDISKS_* udev properties */
if (g_udev_device_has_property (device->udev_device, "UDISKS_SYSTEM"))
hint_system = g_udev_device_get_property_as_boolean (device->udev_device, "UDISKS_SYSTEM");
if (g_udev_device_has_property (device->udev_device, "UDISKS_IGNORE"))
hint_ignore = g_udev_device_get_property_as_boolean (device->udev_device, "UDISKS_IGNORE");
if (g_udev_device_has_property (device->udev_device, "UDISKS_AUTO"))
hint_auto = g_udev_device_get_property_as_boolean (device->udev_device, "UDISKS_AUTO");
if (g_udev_device_has_property (device->udev_device, "UDISKS_NAME"))
hint_name = g_udev_device_get_property (device->udev_device, "UDISKS_NAME");
if (g_udev_device_has_property (device->udev_device, "UDISKS_ICON_NAME"))
hint_icon_name = g_udev_device_get_property (device->udev_device, "UDISKS_ICON_NAME");
if (g_udev_device_has_property (device->udev_device, "UDISKS_SYMBOLIC_ICON_NAME"))
hint_symbolic_icon_name = g_udev_device_get_property (device->udev_device, "UDISKS_SYMBOLIC_ICON_NAME");
/* ... and scene! */
udisks_block_set_hint_partitionable (iface, hint_partitionable);
udisks_block_set_hint_system (iface, hint_system);
udisks_block_set_hint_ignore (iface, hint_ignore);
udisks_block_set_hint_auto (iface, hint_auto);
udisks_block_set_hint_name (iface, hint_name);
udisks_block_set_hint_icon_name (iface, hint_icon_name);
udisks_block_set_hint_symbolic_icon_name (iface, hint_symbolic_icon_name);
}
/* ---------------------------------------------------------------------------------------------------- */
static gchar *
get_slave_sysfs_path (const gchar *sysfs_path)
{
gchar *ret = NULL;
gchar **slaves;
slaves = udisks_daemon_util_resolve_links (sysfs_path, "slaves");
if (slaves != NULL && g_strv_length (slaves) == 1)
{
ret = g_strdup (slaves[0]);
}
g_strfreev (slaves);
return ret;
}
/**
* udisks_linux_block_update:
* @block: A #UDisksLinuxBlock.
* @object: The enclosing #UDisksLinuxBlockObject instance.
*
* Updates the interface.
*/
void
udisks_linux_block_update (UDisksLinuxBlock *block,
UDisksLinuxBlockObject *object)
{
UDisksBlock *iface = UDISKS_BLOCK (block);
UDisksDaemon *daemon;
GDBusObjectManagerServer *object_manager;
UDisksLinuxDevice *device;
GUdevDeviceNumber dev;
gchar *drive_object_path;
UDisksDrive *drive;
gchar *s;
const gchar *device_file;
const gchar *const *symlinks;
const gchar *preferred_device_file;
const gchar *id_device_file;
gboolean media_removable = FALSE;
guint64 size;
gboolean media_available;
gboolean media_change_detected;
gboolean read_only;
gboolean seems_encrypted = FALSE;
guint n;
GError *error = NULL;
drive = NULL;
device = udisks_linux_block_object_get_device (object);
if (device == NULL)
goto out;
daemon = udisks_linux_block_object_get_daemon (object);
object_manager = udisks_daemon_get_object_manager (daemon);