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feat: reflink / Clone support!

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Signed-off-by: Rachel Powers <508861+Ryex@users.noreply.github.com>
This commit is contained in:
Rachel Powers
2023-02-08 23:42:13 -07:00
parent c9105e525e
commit c5bbe42b57
2 changed files with 347 additions and 0 deletions
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141
launcher/FileSystem.h
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@ -3,6 +3,7 @@
* Prism Launcher - Minecraft Launcher
* Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
* Copyright (C) 2022 TheKodeToad <TheKodeToad@proton.me>
* Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.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
@ -313,4 +314,144 @@ bool overrideFolder(QString overwritten_path, QString override_path);
* Creates a shortcut to the specified target file at the specified destination path.
*/
bool createShortcut(QString destination, QString target, QStringList args, QString name, QString icon);
enum class FilesystemType {
FAT,
NTFS,
EXT,
EXT_2_OLD,
EXT_2_3_4,
XFS,
BTRFS,
NFS,
ZFS,
APFS,
HFS,
HFSPLUS,
HFSX,
UNKNOWN
};
static const QMap<FilesystemType, QString> s_filesystem_type_names = {
{FilesystemType::FAT, QString("FAT")},
{FilesystemType::NTFS, QString("NTFS")},
{FilesystemType::EXT, QString("EXT")},
{FilesystemType::EXT_2_OLD, QString("EXT2_OLD")},
{FilesystemType::EXT_2_3_4, QString("EXT2/3/4")},
{FilesystemType::XFS, QString("XFS")},
{FilesystemType::BTRFS, QString("BTRFS")},
{FilesystemType::NFS, QString("NFS")},
{FilesystemType::ZFS, QString("ZFS")},
{FilesystemType::APFS, QString("APFS")},
{FilesystemType::HFS, QString("HFS")},
{FilesystemType::HFSPLUS, QString("HFSPLUS")},
{FilesystemType::HFSX, QString("HFSX")},
{FilesystemType::UNKNOWN, QString("UNKNOWN")}
};
static const QMap<QString, FilesystemType> s_filesystem_type_names_inverse = {
{QString("FAT"), FilesystemType::FAT},
{QString("NTFS"), FilesystemType::NTFS},
{QString("EXT2_OLD"), FilesystemType::EXT_2_OLD},
{QString("EXT2"), FilesystemType::EXT_2_3_4},
{QString("EXT3"), FilesystemType::EXT_2_3_4},
{QString("EXT4"), FilesystemType::EXT_2_3_4},
{QString("EXT"), FilesystemType::EXT},
{QString("XFS"), FilesystemType::XFS},
{QString("BTRFS"), FilesystemType::BTRFS},
{QString("NFS"), FilesystemType::NFS},
{QString("ZFS"), FilesystemType::ZFS},
{QString("APFS"), FilesystemType::APFS},
{QString("HFSPLUS"), FilesystemType::HFSPLUS},
{QString("HFSX"), FilesystemType::HFSX},
{QString("HFS"), FilesystemType::HFS},
{QString("UNKNOWN"), FilesystemType::UNKNOWN}
};
inline QString getFilesystemTypeName(FilesystemType type) {
return s_filesystem_type_names.constFind(type).value();
}
struct FilesystemInfo {
FilesystemType fsType = FilesystemType::UNKNOWN;
int blockSize;
qint64 bytesAvailable;
qint64 bytesFree;
qint64 bytesTotal;
QString name;
QString rootPath;
};
/**
* @brief colect information about the filesystem under a file
*
*/
FilesystemInfo statFS(QString path);
static const QList<FilesystemType> s_clone_filesystems = {
FilesystemType::BTRFS, FilesystemType::APFS, FilesystemType::ZFS, FilesystemType::XFS
};
/**
* @brief if the Filesystem is reflink/clone capable
*
*/
bool canCloneOnFS(const QString& path);
bool canCloneOnFS(const FilesystemInfo& info);
bool canCloneOnFS(FilesystemType type);
/**
* @brief if the Filesystem is reflink/clone capable and both are on the same device
*
*/
bool canClone(const QString& src, const QString& dst);
/**
* @brief Copies a directory and it's contents from src to dest
*/
class clone : public QObject {
Q_OBJECT
public:
clone(const QString& src, const QString& dst, QObject* parent = nullptr) : QObject(parent)
{
m_src.setPath(src);
m_dst.setPath(dst);
}
clone& matcher(const IPathMatcher* filter)
{
m_matcher = filter;
return *this;
}
clone& whitelist(bool whitelist)
{
m_whitelist = whitelist;
return *this;
}
bool operator()(bool dryRun = false) { return operator()(QString(), dryRun); }
int totalCloned() { return m_cloned; }
signals:
void fileCloned(const QString& src, const QString& dst);
void cloneFailed(const QString& src, const QString& dst);
private:
bool operator()(const QString& offset, bool dryRun = false);
private:
const IPathMatcher* m_matcher = nullptr;
bool m_whitelist = false;
QDir m_src;
QDir m_dst;
int m_cloned;
};
/**
* @brief clone/reflink file from src to dst
*
*/
bool clone_file(const QString& src, const QString& dst, std::error_code& ec);
}