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// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System.Collections.Generic;
using Duplicati.Library.IO;
namespace Duplicati.Library.Snapshots
{
/// <summary>
/// Handler for providing a snapshot like access to files and folders
/// </summary>
public sealed class NoSnapshotLinux : SnapshotBase
{
/// <summary>
/// Returns the symlink target if the entry is a symlink, and null otherwise
/// </summary>
/// <param name="localPath">The file or folder to examine</param>
/// <returns>The symlink target</returns>
public override string GetSymlinkTarget(string localPath)
{
return SystemIO.IO_SYS.GetSymlinkTarget(localPath);
}
/// <summary>
/// Gets the metadata for the given file or folder
/// </summary>
/// <returns>The metadata for the given file or folder</returns>
/// <param name="localPath">The file or folder to examine</param>
/// <param name="isSymlink">A flag indicating if the target is a symlink</param>
/// <param name="followSymlink">A flag indicating if a symlink should be followed</param>
public override Dictionary<string, string> GetMetadata(string localPath, bool isSymlink, bool followSymlink)
{
return SystemIO.IO_SYS.GetMetadata(localPath, isSymlink, followSymlink);
}
/// <summary>
/// Gets a value indicating if the path points to a block device
/// </summary>
/// <returns><c>true</c> if this instance is a block device; otherwise, <c>false</c>.</returns>
/// <param name="localPath">The file or folder to examine</param>
public override bool IsBlockDevice(string localPath)
{
var n = UnixSupport.File.GetFileType(SystemIOLinux.NormalizePath(localPath));
switch (n)
{
case UnixSupport.File.FileType.Directory:
case UnixSupport.File.FileType.Symlink:
case UnixSupport.File.FileType.File:
return false;
default:
return true;
}
}
/// <summary>
/// Gets a unique hardlink target ID
/// </summary>
/// <returns>The hardlink ID</returns>
/// <param name="localPath">The file or folder to examine</param>
public override string HardlinkTargetID(string localPath)
{
var normalizePath = SystemIOLinux.NormalizePath(localPath);
return UnixSupport.File.GetHardlinkCount(normalizePath) <= 1
? null
: UnixSupport.File.GetInodeTargetID(normalizePath);
}
/// <inheritdoc />
public override string ConvertToLocalPath(string snapshotPath)
{
return snapshotPath;
}
/// <inheritdoc />
public override string ConvertToSnapshotPath(string localPath)
{
return SystemIOLinux.NormalizePath(localPath);
}
}
}
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