328 lines
11 KiB
C++
328 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 2017-2018, Adriaan de Groot <groot@kde.org>
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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/PartitionInfo.h"
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#include "core/PartitionCoreModule.h"
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#include "core/PartUtils.h"
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#include "utils/CalamaresUtilsSystem.h"
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#include "utils/Units.h"
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#include "JobQueue.h"
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#include "utils/Logger.h"
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#include "GlobalStorage.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::GiBtoBytes;
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using CalamaresUtils::MiBtoBytes;
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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 )
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{
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/* If suspend-to-disk is demanded, then we always need enough
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* swap to write the whole memory to disk -- between 2GB and 8GB
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* RAM give proportionally more swap, and from 8GB RAM keep
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* swap = RAM.
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*
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* If suspend-to-disk is not demanded, then ramp up more slowly,
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* to 8GB swap at 16GB memory, and then drop to 4GB for "large
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* memory" machines, on the assumption that those don't need swap
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* because they have tons of memory (or whatever they are doing,
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* had better not run into swap).
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*/
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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 =
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Calamares::JobQueue::instance()->globalStorage()->
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value( "ensureSuspendToDisk" ).toBool();
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if ( ensureSuspendToDisk )
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{
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if ( availableRamB < 4_GiB )
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suggestedSwapSizeB = qMax( 2_GiB, availableRamB * 2 );
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else if ( availableRamB >= 4_GiB && availableRamB < 8_GiB )
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suggestedSwapSizeB = 8_GiB;
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else
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suggestedSwapSizeB = availableRamB;
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suggestedSwapSizeB *= overestimationFactor;
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}
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else //if we don't care about suspend to disk
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{
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if ( availableRamB < 2_GiB )
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suggestedSwapSizeB = qMax( 2_GiB, availableRamB * 2 );
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else if ( availableRamB >= 2_GiB && availableRamB < 8_GiB )
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suggestedSwapSizeB = availableRamB;
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else if ( availableRamB >= 8_GiB && availableRamB < 16_GiB )
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suggestedSwapSizeB = 8_GiB;
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else
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suggestedSwapSizeB = 4_GiB;
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suggestedSwapSizeB *= overestimationFactor;
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// don't use more than 10% of available space
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qreal maxSwapDiskRatio = 0.10;
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qint64 maxSwapSizeB = availableSpaceB * maxSwapDiskRatio;
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if ( suggestedSwapSizeB > maxSwapSizeB )
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suggestedSwapSizeB = maxSwapSizeB;
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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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constexpr qint64
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alignBytesToBlockSize( qint64 bytes, qint64 blocksize )
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{
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Q_ASSERT( bytes >= 0 );
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Q_ASSERT( blocksize > 0 );
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qint64 blocks = bytes / blocksize;
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Q_ASSERT( blocks >= 0 );
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if ( blocks * blocksize != bytes )
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++blocks;
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return blocks * blocksize;
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}
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constexpr qint64
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bytesToSectors( qint64 bytes, qint64 blocksize )
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{
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return alignBytesToBlockSize( alignBytesToBlockSize( bytes, blocksize), MiBtoBytes(1) ) / blocksize;
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}
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void
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doAutopartition( PartitionCoreModule* core, Device* dev, const QString& luksPassphrase )
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{
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Calamares::GlobalStorage* gs = Calamares::JobQueue::instance()->globalStorage();
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bool isEfi = PartUtils::isEfiSystem();
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QString defaultFsType = gs->value( "defaultFileSystemType" ).toString();
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if ( FileSystem::typeForName( defaultFsType ) == FileSystem::Unknown )
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defaultFsType = "ext4";
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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 300MiB EFI boot partition, while BIOS starts at
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// the 1MiB boundary (usually sector 2048).
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int uefisys_part_size = isEfi ? 300 : 0;
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int empty_space_size = isEfi ? 2 : 1;
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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 = bytesToSectors( MiBtoBytes(empty_space_size), dev->logicalSize() );
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if ( isEfi )
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{
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qint64 efiSectorCount = bytesToSectors( MiBtoBytes(uefisys_part_size), 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(
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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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PartitionTable::FlagNone
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);
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PartitionInfo::setFormat( efiPartition, true );
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PartitionInfo::setMountPoint( efiPartition, gs->value( "efiSystemPartition" )
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.toString() );
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core->createPartition( dev, efiPartition, PartitionTable::FlagEsp );
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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 = !gs->value( "neverCreateSwap" ).toBool();
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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 );
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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 =
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GiBtoBytes( gs->value( "requiredStorageGB" ).toDouble() + 0.6 ) +
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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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Partition* rootPartition = nullptr;
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if ( luksPassphrase.isEmpty() )
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{
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rootPartition = KPMHelpers::createNewPartition(
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dev->partitionTable(),
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*dev,
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PartitionRole( PartitionRole::Primary ),
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FileSystem::typeForName( defaultFsType ),
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firstFreeSector,
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lastSectorForRoot
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);
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}
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else
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{
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rootPartition = KPMHelpers::createNewEncryptedPartition(
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dev->partitionTable(),
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*dev,
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PartitionRole( PartitionRole::Primary ),
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FileSystem::typeForName( defaultFsType ),
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firstFreeSector,
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lastSectorForRoot,
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luksPassphrase
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);
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}
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PartitionInfo::setFormat( rootPartition, true );
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PartitionInfo::setMountPoint( rootPartition, "/" );
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core->createPartition( dev, rootPartition );
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if ( shouldCreateSwap )
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{
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Partition* swapPartition = nullptr;
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if ( luksPassphrase.isEmpty() )
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{
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swapPartition = KPMHelpers::createNewPartition(
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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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);
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}
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else
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{
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swapPartition = KPMHelpers::createNewEncryptedPartition(
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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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luksPassphrase
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);
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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,
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Device* dev,
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Partition* partition,
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const QString& luksPassphrase )
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{
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cDebug() << "doReplacePartition for device" << partition->partitionPath();
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QString defaultFsType = Calamares::JobQueue::instance()->
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globalStorage()->
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value( "defaultFileSystemType" ).toString();
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if ( FileSystem::typeForName( defaultFsType ) == FileSystem::Unknown )
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defaultFsType = "ext4";
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PartitionRole newRoles( partition->roles() );
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if ( partition->roles().has( PartitionRole::Extended ) )
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newRoles = PartitionRole( PartitionRole::Primary );
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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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newRoles = PartitionRole( PartitionRole::Logical );
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}
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}
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Partition* newPartition = nullptr;
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if ( luksPassphrase.isEmpty() )
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{
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newPartition = KPMHelpers::createNewPartition(
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partition->parent(),
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*dev,
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newRoles,
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FileSystem::typeForName( defaultFsType ),
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partition->firstSector(),
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partition->lastSector()
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);
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}
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else
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{
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newPartition = KPMHelpers::createNewEncryptedPartition(
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partition->parent(),
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*dev,
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newRoles,
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FileSystem::typeForName( defaultFsType ),
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partition->firstSector(),
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partition->lastSector(),
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luksPassphrase
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);
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}
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PartitionInfo::setMountPoint( newPartition, "/" );
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PartitionInfo::setFormat( newPartition, true );
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if ( !partition->roles().has( PartitionRole::Unallocated ) )
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core->deletePartition( dev, partition );
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core->createPartition( dev, newPartition );
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core->dumpQueue();
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}
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}
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