File indexing completed on 2024-05-05 05:48:51

 /*
     SPDX-FileCopyrightText: 2008-2010 Volker Lanz <vl@fidra.de>
     SPDX-FileCopyrightText: 2012-2018 Andrius Štikonas <andrius@stikonas.eu>
     SPDX-FileCopyrightText: 2015-2016 Teo Mrnjavac <teo@kde.org>
     SPDX-FileCopyrightText: 2018 Caio Jordão Carvalho <caiojcarvalho@gmail.com>
 
     SPDX-License-Identifier: GPL-3.0-or-later
 */
 
 #include "ops/deleteoperation.h"
 
 #include "core/partition.h"
 #include "core/device.h"
 #include "core/lvmdevice.h"
 #include "core/partitiontable.h"
 #include "core/raid/softwareraid.h"
 #include "fs/luks.h"
 
 #include "jobs/deletepartitionjob.h"
 #include "jobs/deletefilesystemjob.h"
 #include "jobs/shredfilesystemjob.h"
 
 #include "util/capacity.h"
 
 #include <QString>
 
 #include <KLocalizedString>
 
 /** Creates a new DeleteOperation
     @param d the Device to delete a Partition on
     @param p pointer to the Partition to delete. May not be nullptr
 */
 DeleteOperation::DeleteOperation(Device& d, Partition* p, ShredAction shred) :
     Operation(),
     m_TargetDevice(d),
     m_DeletedPartition(p),
     m_ShredAction(shred),
     m_DeletePartitionJob(new DeletePartitionJob(targetDevice(), deletedPartition()))
 {
     switch (shredAction()) {
     case ShredAction::NoShred:
         m_DeleteFileSystemJob = static_cast<Job*>(new DeleteFileSystemJob(targetDevice(), deletedPartition()));
         break;
     case ShredAction::ZeroShred:
         m_DeleteFileSystemJob = static_cast<Job*>(new ShredFileSystemJob(targetDevice(), deletedPartition(), false));
         break;
     case ShredAction::RandomShred:
         m_DeleteFileSystemJob = static_cast<Job*>(new ShredFileSystemJob(targetDevice(), deletedPartition(), true));
     }
 
     addJob(deleteFileSystemJob());
     if (d.partitionTable()->type() != PartitionTable::TableType::none)
         addJob(deletePartitionJob());
 }
 
 DeleteOperation::~DeleteOperation()
 {
     if (status() != StatusPending && status() != StatusNone) // don't delete the partition if we're being merged or undone
         delete m_DeletedPartition;
 }
 
 bool DeleteOperation::targets(const Device& d) const
 {
     return d == targetDevice();
 }
 
 bool DeleteOperation::targets(const Partition& p) const
 {
     return p == deletedPartition();
 }
 
 void DeleteOperation::preview()
 {
     removePreviewPartition(targetDevice(), deletedPartition());
     checkAdjustLogicalNumbers(deletedPartition(), false);
 }
 
 void DeleteOperation::undo()
 {
     checkAdjustLogicalNumbers(deletedPartition(), true);
     insertPreviewPartition(targetDevice(), deletedPartition());
 }
 
 QString DeleteOperation::description() const
 {
     if (shredAction() != ShredAction::NoShred)
         return xi18nc("@info:status", "Shred partition <filename>%1</filename> (%2, %3)", deletedPartition().deviceNode(), Capacity::formatByteSize(deletedPartition().capacity()), deletedPartition().fileSystem().name());
     else
         return xi18nc("@info:status", "Delete partition <filename>%1</filename> (%2, %3)", deletedPartition().deviceNode(), Capacity::formatByteSize(deletedPartition().capacity()), deletedPartition().fileSystem().name());
 }
 
 void DeleteOperation::checkAdjustLogicalNumbers(Partition& p, bool undo)
 {
     // If the deleted partition is a logical one, we need to adjust the numbers of the
     // other logical partitions in the extended one, if there are any, because the OS
     // will do that, too: Logicals must be numbered without gaps, i.e., a numbering like
     // sda5, sda6, sda8 (after sda7 is deleted) will become sda5, sda6, sda7
     Partition* parentPartition = dynamic_cast<Partition*>(p.parent());
     if (parentPartition && parentPartition->roles().has(PartitionRole::Extended))
         parentPartition->adjustLogicalNumbers(undo ? -1 : p.number(), undo ? p.number() : -1);
 }
 
 /** Can a Partition be deleted?
     @param p the Partition in question, may be nullptr.
     @return true if @p p can be deleted.
 */
 bool DeleteOperation::canDelete(const Partition* p)
 {
     if (p == nullptr)
         return false;
 
     if (p->isMounted())
         return false;
 
     if (p->fileSystem().type() == FileSystem::Type::Lvm2_PV) {
         if (LvmDevice::s_DirtyPVs.contains(p))
             return false;
     }
     else if (p->fileSystem().type() == FileSystem::Type::LinuxRaidMember) {
         if (SoftwareRAID::isRaidMember(p->partitionPath()))
             return false;
     }
     else if (p->fileSystem().type() == FileSystem::Type::Luks || p->fileSystem().type() == FileSystem::Type::Luks2) {
         // See if innerFS is LVM
         FileSystem *fs = static_cast<const FS::luks *>(&p->fileSystem())->innerFS();
 
         if (fs) {
             if (fs->type() == FileSystem::Type::Lvm2_PV) {
                 if (LvmDevice::s_DirtyPVs.contains(p))
                     return false;
             }
             else if (fs->type() == FileSystem::Type::LinuxRaidMember) {
                 if (SoftwareRAID::isRaidMember(p->partitionPath()))
                     return false;
             }
         }
     }
 
     if (p->roles().has(PartitionRole::Unallocated))
         return false;
 
     if (p->roles().has(PartitionRole::Extended))
         return p->children().size() == 1 && p->children()[0]->roles().has(PartitionRole::Unallocated);
 
     if (p->roles().has(PartitionRole::Luks))
     {
         const FS::luks* luksFs = static_cast<const FS::luks*>(&p->fileSystem());
         if (!luksFs)
             return false;
 
         if (luksFs->isCryptOpen() || luksFs->isMounted())
             return false;
     }
 
     return true;
 }