7f295d9565
Because this is a giant code change, with no functional effect, I've been saving this until the end of the kpmcore-manager branch.
295 lines
11 KiB
C++
295 lines
11 KiB
C++
/* === This file is part of Calamares - <https://github.com/calamares> ===
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*
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* Copyright 2014-2017, Teo Mrnjavac <teo@kde.org>
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* Copyright 2017-2019, Adriaan de Groot <groot@kde.org>
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* Copyright 2019, Collabora Ltd <arnaud.ferraris@collabora.com>
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*
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* Calamares 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 3 of the License, or
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* (at your option) any later version.
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*
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* Calamares 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 Calamares. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "PartitionActions.h"
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#include "core/KPMHelpers.h"
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#include "core/PartUtils.h"
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#include "core/PartitionCoreModule.h"
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#include "core/PartitionInfo.h"
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#include "utils/CalamaresUtilsSystem.h"
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#include "utils/NamedEnum.h"
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#include "utils/Units.h"
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#include "GlobalStorage.h"
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#include "JobQueue.h"
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#include "utils/Logger.h"
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#include <kpmcore/core/device.h>
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#include <kpmcore/core/partition.h>
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#include <QDir>
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namespace PartitionActions
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{
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using CalamaresUtils::operator""_GiB;
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using CalamaresUtils::operator""_MiB;
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qint64
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swapSuggestion( const qint64 availableSpaceB, Choices::SwapChoice swap )
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{
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if ( ( swap != Choices::SmallSwap ) && ( swap != Choices::FullSwap ) )
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{
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return 0;
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}
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// See partition.conf for explanation
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qint64 suggestedSwapSizeB = 0;
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auto memory = CalamaresUtils::System::instance()->getTotalMemoryB();
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qint64 availableRamB = memory.first;
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qreal overestimationFactor = memory.second;
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bool ensureSuspendToDisk = swap == Choices::FullSwap;
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// Ramp up quickly to 8GiB, then follow memory size
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if ( availableRamB <= 4_GiB )
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{
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suggestedSwapSizeB = availableRamB * 2;
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}
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else if ( availableRamB <= 8_GiB )
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{
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suggestedSwapSizeB = 8_GiB;
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}
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else
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{
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suggestedSwapSizeB = availableRamB;
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}
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// .. top out at 8GiB if we don't care about suspend
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if ( !ensureSuspendToDisk )
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{
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suggestedSwapSizeB = qMin( 8_GiB, suggestedSwapSizeB );
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}
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// Allow for a fudge factor
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suggestedSwapSizeB *= overestimationFactor;
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// don't use more than 10% of available space
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if ( !ensureSuspendToDisk )
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{
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suggestedSwapSizeB = qMin( suggestedSwapSizeB, qint64( 0.10 * availableSpaceB ) );
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}
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cDebug() << "Suggested swap size:" << suggestedSwapSizeB / 1024. / 1024. / 1024. << "GiB";
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return suggestedSwapSizeB;
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}
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void
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doAutopartition( PartitionCoreModule* core, Device* dev, Choices::AutoPartitionOptions o )
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{
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Calamares::GlobalStorage* gs = Calamares::JobQueue::instance()->globalStorage();
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QString defaultFsType = o.defaultFsType;
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if ( FileSystem::typeForName( defaultFsType ) == FileSystem::Unknown )
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{
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defaultFsType = "ext4";
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}
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bool isEfi = PartUtils::isEfiSystem();
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// Partition sizes are expressed in MiB, should be multiples of
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// the logical sector size (usually 512B). EFI starts with 2MiB
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// empty and a EFI boot partition, while BIOS starts at
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// the 1MiB boundary (usually sector 2048).
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int empty_space_sizeB = isEfi ? 2_MiB : 1_MiB;
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int uefisys_part_sizeB = 0_MiB;
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if ( isEfi )
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{
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if ( gs->contains( "efiSystemPartitionSize" ) )
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{
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CalamaresUtils::Partition::PartitionSize part_size
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= CalamaresUtils::Partition::PartitionSize( gs->value( "efiSystemPartitionSize" ).toString() );
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uefisys_part_sizeB = part_size.toBytes( dev->capacity() );
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}
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else
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{
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uefisys_part_sizeB = 300_MiB;
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}
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}
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// Since sectors count from 0, if the space is 2048 sectors in size,
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// the first free sector has number 2048 (and there are 2048 sectors
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// before that one, numbered 0..2047).
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qint64 firstFreeSector = CalamaresUtils::bytesToSectors( empty_space_sizeB, dev->logicalSize() );
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if ( isEfi )
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{
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qint64 efiSectorCount = CalamaresUtils::bytesToSectors( uefisys_part_sizeB, dev->logicalSize() );
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Q_ASSERT( efiSectorCount > 0 );
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// Since sectors count from 0, and this partition is created starting
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// at firstFreeSector, we need efiSectorCount sectors, numbered
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// firstFreeSector..firstFreeSector+efiSectorCount-1.
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qint64 lastSector = firstFreeSector + efiSectorCount - 1;
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core->createPartitionTable( dev, PartitionTable::gpt );
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Partition* efiPartition = KPMHelpers::createNewPartition( dev->partitionTable(),
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*dev,
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PartitionRole( PartitionRole::Primary ),
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FileSystem::Fat32,
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firstFreeSector,
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lastSector,
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KPM_PARTITION_FLAG( None ) );
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PartitionInfo::setFormat( efiPartition, true );
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PartitionInfo::setMountPoint( efiPartition, o.efiPartitionMountPoint );
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core->createPartition( dev, efiPartition, KPM_PARTITION_FLAG_ESP );
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firstFreeSector = lastSector + 1;
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}
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else
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{
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core->createPartitionTable( dev, PartitionTable::msdos );
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}
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const bool mayCreateSwap = ( o.swap == Choices::SmallSwap ) || ( o.swap == Choices::FullSwap );
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bool shouldCreateSwap = false;
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qint64 suggestedSwapSizeB = 0;
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if ( mayCreateSwap )
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{
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qint64 availableSpaceB = ( dev->totalLogical() - firstFreeSector ) * dev->logicalSize();
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suggestedSwapSizeB = swapSuggestion( availableSpaceB, o.swap );
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// Space required by this installation is what the distro claims is needed
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// (via global configuration) plus the swap size plus a fudge factor of
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// 0.6GiB (this was 2.1GiB up to Calamares 3.2.2).
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qint64 requiredSpaceB = o.requiredSpaceB + 600_MiB + suggestedSwapSizeB;
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// If there is enough room for ESP + root + swap, create swap, otherwise don't.
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shouldCreateSwap = availableSpaceB > requiredSpaceB;
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}
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qint64 lastSectorForRoot = dev->totalLogical() - 1; //last sector of the device
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if ( shouldCreateSwap )
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{
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lastSectorForRoot -= suggestedSwapSizeB / dev->logicalSize() + 1;
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}
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core->layoutApply( dev, firstFreeSector, lastSectorForRoot, o.luksPassphrase );
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if ( shouldCreateSwap )
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{
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Partition* swapPartition = nullptr;
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if ( o.luksPassphrase.isEmpty() )
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{
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swapPartition = KPMHelpers::createNewPartition( dev->partitionTable(),
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*dev,
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PartitionRole( PartitionRole::Primary ),
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FileSystem::LinuxSwap,
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lastSectorForRoot + 1,
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dev->totalLogical() - 1,
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KPM_PARTITION_FLAG( None ) );
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}
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else
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{
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swapPartition = KPMHelpers::createNewEncryptedPartition( dev->partitionTable(),
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*dev,
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PartitionRole( PartitionRole::Primary ),
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FileSystem::LinuxSwap,
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lastSectorForRoot + 1,
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dev->totalLogical() - 1,
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o.luksPassphrase,
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KPM_PARTITION_FLAG( None ) );
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}
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PartitionInfo::setFormat( swapPartition, true );
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core->createPartition( dev, swapPartition );
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}
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core->dumpQueue();
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}
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void
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doReplacePartition( PartitionCoreModule* core, Device* dev, Partition* partition, Choices::ReplacePartitionOptions o )
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{
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qint64 firstSector, lastSector;
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cDebug() << "doReplacePartition for device" << partition->partitionPath();
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QString defaultFsType = o.defaultFsType;
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if ( FileSystem::typeForName( defaultFsType ) == FileSystem::Unknown )
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{
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defaultFsType = "ext4";
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}
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PartitionRole newRoles( partition->roles() );
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if ( partition->roles().has( PartitionRole::Extended ) )
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{
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newRoles = PartitionRole( PartitionRole::Primary );
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}
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if ( partition->roles().has( PartitionRole::Unallocated ) )
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{
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newRoles = PartitionRole( PartitionRole::Primary );
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cWarning() << "selected partition is free space";
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if ( partition->parent() )
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{
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Partition* parent = dynamic_cast< Partition* >( partition->parent() );
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if ( parent && parent->roles().has( PartitionRole::Extended ) )
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{
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newRoles = PartitionRole( PartitionRole::Logical );
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}
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}
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}
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// Save the first and last sector values as the partition will be deleted
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firstSector = partition->firstSector();
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lastSector = partition->lastSector();
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if ( !partition->roles().has( PartitionRole::Unallocated ) )
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{
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core->deletePartition( dev, partition );
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}
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core->layoutApply( dev, firstSector, lastSector, o.luksPassphrase );
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core->dumpQueue();
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}
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namespace Choices
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{
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static const NamedEnumTable< SwapChoice >&
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nameTable()
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{
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static const NamedEnumTable< SwapChoice > names { { QStringLiteral( "none" ), SwapChoice::NoSwap },
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{ QStringLiteral( "small" ), SwapChoice::SmallSwap },
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{ QStringLiteral( "suspend" ), SwapChoice::FullSwap },
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{ QStringLiteral( "reuse" ), SwapChoice::ReuseSwap },
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{ QStringLiteral( "file" ), SwapChoice::SwapFile } };
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return names;
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}
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SwapChoice
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nameToChoice( QString name, bool& ok )
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{
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return nameTable().find( name, ok );
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}
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QString
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choiceToName( SwapChoice c )
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{
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bool ok = false;
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return nameTable().find( c, ok );
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}
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} // namespace Choices
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} // namespace PartitionActions
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