Files
AaruBenchmark/Aaru.CommonTypes/Structs/Filesystems.cs
2021-09-22 15:37:59 +01:00

281 lines
13 KiB
C#

// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename : Structs.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Common structures.
//
// --[ Description ] ----------------------------------------------------------
//
// Contains enumerations and structures of common usage by filesystem
// plugins.
//
// --[ License ] --------------------------------------------------------------
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2021 Natalia Portillo
// ****************************************************************************/
using System;
using System.Runtime.InteropServices;
using Newtonsoft.Json;
namespace Aaru.CommonTypes.Structs
{
/// <summary>File attributes.</summary>
[Flags]
public enum FileAttributes : ulong
{
/// <summary>File has no attributes</summary>
None = 0,
/// <summary>File is an alias (Mac OS)</summary>
Alias = 0x01,
/// <summary>Indicates that the file can only be writable appended</summary>
AppendOnly = 0x02,
/// <summary>File is candidate for archival/backup</summary>
Archive = 0x04,
/// <summary>File is a block device</summary>
BlockDevice = 0x08,
/// <summary>File is stored on filesystem block units instead of device sectors</summary>
BlockUnits = 0x10,
/// <summary>Directory is a bundle or file contains a BNDL resource</summary>
Bundle = 0x20,
/// <summary>File is a char device</summary>
CharDevice = 0x40,
/// <summary>File is compressed</summary>
Compressed = 0x80,
/// <summary>File is compressed and should not be uncompressed on read</summary>
CompressedRaw = 0x100,
/// <summary>File has compression errors</summary>
CompressionError = 0x200,
/// <summary>Compressed file is dirty</summary>
CompressionDirty = 0x400,
/// <summary>File is a device</summary>
Device = 0x800,
/// <summary>File is a directory</summary>
Directory = 0x1000,
/// <summary>File is encrypted</summary>
Encrypted = 0x2000,
/// <summary>File is stored on disk using extents</summary>
Extents = 0x4000,
/// <summary>File is a FIFO</summary>
FIFO = 0x8000,
/// <summary>File is a normal file</summary>
File = 0x10000,
/// <summary>File is a Mac OS file containing desktop databases that has already been added to the desktop database</summary>
HasBeenInited = 0x20000,
/// <summary>File contains an icon resource / EA</summary>
HasCustomIcon = 0x40000,
/// <summary>File is a Mac OS extension or control panel lacking INIT resources</summary>
HasNoINITs = 0x80000,
/// <summary>File is hidden/invisible</summary>
Hidden = 0x100000,
/// <summary>File cannot be written, deleted, modified or linked to</summary>
Immutable = 0x200000,
/// <summary>Directory is indexed using hashed trees</summary>
IndexedDirectory = 0x400000,
/// <summary>File contents are stored alongside its inode (or equivalent)</summary>
Inline = 0x800000,
/// <summary>File contains integrity checks</summary>
IntegrityStream = 0x1000000,
/// <summary>File is on desktop</summary>
IsOnDesk = 0x2000000,
/// <summary>File changes are written to filesystem journal before being written to file itself</summary>
Journaled = 0x4000000,
/// <summary>Access time will not be modified</summary>
NoAccessTime = 0x8000000,
/// <summary>File will not be subject to copy-on-write</summary>
NoCopyOnWrite = 0x10000000,
/// <summary>File will not be backed up</summary>
NoDump = 0x20000000,
/// <summary>File contents should not be scrubbed</summary>
NoScrub = 0x40000000,
/// <summary>File contents should not be indexed</summary>
NotIndexed = 0x80000000,
/// <summary>File is offline</summary>
Offline = 0x100000000,
/// <summary>File is password protected, but contents are not encrypted on disk</summary>
Password = 0x200000000,
/// <summary>File is read-only</summary>
ReadOnly = 0x400000000,
/// <summary>File is a reparse point</summary>
ReparsePoint = 0x800000000,
/// <summary>When file is removed its content will be overwritten with zeroes</summary>
Secured = 0x1000000000,
/// <summary>File contents are sparse</summary>
Sparse = 0x2000000000,
/// <summary>File is a shadow (OS/2)</summary>
Shadow = 0x4000000000,
/// <summary>File is shared</summary>
Shared = 0x8000000000,
/// <summary>File is a stationery</summary>
Stationery = 0x10000000000,
/// <summary>File is a symbolic link</summary>
Symlink = 0x20000000000,
/// <summary>File writes are synchronously written to disk</summary>
Sync = 0x40000000000,
/// <summary>File belongs to the operating system</summary>
System = 0x80000000000,
/// <summary>If file end is a partial block its content will be merged with other files</summary>
TailMerged = 0x100000000000,
/// <summary>File is temporary</summary>
Temporary = 0x200000000000,
/// <summary>Subdirectories inside of this directory are not related and should be allocated elsewhere</summary>
TopDirectory = 0x400000000000,
/// <summary>If file is deleted, contents should be stored, for a possible future undeletion</summary>
Undeletable = 0x800000000000,
/// <summary>File is a pipe</summary>
Pipe = 0x1000000000000,
/// <summary>File is a socket</summary>
Socket = 0x2000000000000
}
/// <summary>Information about a file entry</summary>
public class FileEntryInfo
{
/// <summary>File attributes</summary>
public FileAttributes Attributes { get; set; }
/// <summary>File length in blocks</summary>
public long Blocks { get; set; }
/// <summary>File block size in bytes</summary>
public long BlockSize { get; set; }
/// <summary>If file points to a device, device number. Null if the underlying filesystem does not support them.</summary>
public ulong? DeviceNo { get; set; }
/// <summary>POSIX group ID. Null if the underlying filesystem does not support them.</summary>
public ulong? GID { get; set; }
/// <summary>inode number for this file (or other unique identifier for the volume)</summary>
public ulong Inode { get; set; }
/// <summary>File length in bytes</summary>
public long Length { get; set; }
/// <summary>Number of hard links pointing to this file (. and .. entries count as hard links)</summary>
public ulong Links { get; set; }
/// <summary>POSIX permissions/mode for this file. Null if the underlying filesystem does not support them.</summary>
public uint? Mode { get; set; }
/// <summary>POSIX owner ID. Null if the underlying filesystem does not support them.</summary>
public ulong? UID { get; set; }
/// <summary>File creation date in UTC. Null if the underlying filesystem does not support them.</summary>
public DateTime? CreationTimeUtc { get; set; }
/// <summary>File last access date in UTC. Null if the underlying filesystem does not support them.</summary>
public DateTime? AccessTimeUtc { get; set; }
/// <summary>File attributes change date in UTC. Null if the underlying filesystem does not support them.</summary>
public DateTime? StatusChangeTimeUtc { get; set; }
/// <summary>File last backup date in UTC. Null if the underlying filesystem does not support them.</summary>
public DateTime? BackupTimeUtc { get; set; }
/// <summary>File last modification date in UTC. Null if the underlying filesystem does not support them.</summary>
public DateTime? LastWriteTimeUtc { get; set; }
/// <summary>File creation date. Null if the underlying filesystem does not support them.</summary>
[JsonIgnore]
public DateTime? CreationTime
{
get => CreationTimeUtc?.ToLocalTime();
set => CreationTimeUtc = value?.ToUniversalTime();
}
/// <summary>File last access date. Null if the underlying filesystem does not support them.</summary>
[JsonIgnore]
public DateTime? AccessTime
{
get => AccessTimeUtc?.ToLocalTime();
set => AccessTimeUtc = value?.ToUniversalTime();
}
/// <summary>File attributes change date. Null if the underlying filesystem does not support them.</summary>
[JsonIgnore]
public DateTime? StatusChangeTime
{
get => StatusChangeTimeUtc?.ToLocalTime();
set => StatusChangeTimeUtc = value?.ToUniversalTime();
}
/// <summary>File last backup date. Null if the underlying filesystem does not support them.</summary>
[JsonIgnore]
public DateTime? BackupTime
{
get => BackupTimeUtc?.ToLocalTime();
set => BackupTimeUtc = value?.ToUniversalTime();
}
/// <summary>File last modification date. Null if the underlying filesystem does not support them.</summary>
[JsonIgnore]
public DateTime? LastWriteTime
{
get => LastWriteTimeUtc?.ToLocalTime();
set => LastWriteTimeUtc = value?.ToUniversalTime();
}
}
/// <summary>Information about a volume</summary>
public class FileSystemInfo
{
/// <summary>Blocks for this filesystem</summary>
public ulong Blocks;
/// <summary>Maximum length of filenames on this filesystem</summary>
public ushort FilenameLength;
/// <summary>Files on this filesystem</summary>
public ulong Files;
/// <summary>Blocks free on this filesystem</summary>
public ulong FreeBlocks;
/// <summary>Free inodes on this filesystem</summary>
public ulong FreeFiles;
/// <summary>Filesystem ID</summary>
public FileSystemId Id;
/// <summary>ID of plugin for this file</summary>
public Guid PluginId;
/// <summary>Filesystem type</summary>
public string Type;
/// <summary>Initializes an empty instance of this structure</summary>
public FileSystemInfo() => Id = new FileSystemId();
/// <summary>Gets a clone of this structure</summary>
/// <returns>Clone of this structure</returns>
public FileSystemInfo ShallowCopy() => (FileSystemInfo)MemberwiseClone();
}
/// <summary>Stores a filesystem volume unique identifier or serial number</summary>
[StructLayout(LayoutKind.Explicit)]
public struct FileSystemId
{
/// <summary>Set to <c>true</c> if the identifier is a 32-bit integer</summary>
[FieldOffset(0)]
public bool IsInt;
/// <summary>Set to <c>true</c> if the identifier is a 64-bit integer</summary>
[FieldOffset(1)]
public bool IsLong;
/// <summary>Set to <c>true</c> if the identifier is a GUID</summary>
[FieldOffset(2)]
public bool IsGuid;
/// <summary>Identifier as a 32-bit integer</summary>
[FieldOffset(3)]
public uint Serial32;
/// <summary>Identifier as a 64-bit integer</summary>
[FieldOffset(3)]
public ulong Serial64;
/// <summary>Identifier as a GUID</summary>
[FieldOffset(3)]
public Guid uuid;
}
}