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132091269c
Only load the LUKS_Info cache of active dm-crypt mappings when the first LUKS partition is encountered. Not needed from a performance point of view as the longest that I have ever seen "dmsetup table --target crypt" take to run is 0.05 seconds. Just means that the dmsetup command is only run when there are LUKS partitions and the information is needed. Bug 760080 - Implement read-only LUKS support
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/* Copyright (C) 2015 Mike Fleetwood
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* LUKS_Info
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*
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* Cache of active Linux kernel Device-mapper encryption mappings.
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* (Named LUKS because only encryption using the LUKS on disk format is
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* recognised and handled).
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*/
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#ifndef GPARTED_LUKS_INFO_H
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#define GPARTED_LUKS_INFO_H
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#include "../include/Utils.h"
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#include <glibmm/ustring.h>
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#include <vector>
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namespace GParted
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{
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struct LUKS_Mapping
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{
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Glib::ustring name; // Name of the dm-crypt mapping
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unsigned long major; // Major device number of the underlying block device
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unsigned long minor; // Minor device number of the underlying block device
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Glib::ustring path; // Path of the underlying block device
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Byte_Value offset; // Offset to the start of the mapping in the underlying block device
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Byte_Value length; // Length of the mapping in the underlying block device
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};
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class LUKS_Info
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{
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public:
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static void clear_cache();
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static const LUKS_Mapping & get_cache_entry( const Glib::ustring & path );
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private:
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static void initialise_if_required();
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static void load_cache();
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static const LUKS_Mapping & get_cache_entry_internal( const Glib::ustring & path );
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static std::vector<LUKS_Mapping> luks_mapping_cache;
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static bool cache_initialised;
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};
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}//GParted
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#endif /* GPARTED_LUKS_INFO_H */
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