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// Copyright (C) 2011, Kenneth Skovhede
// http://www.hexad.dk, opensource@hexad.dk
//
// 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;
using System.Text;
using System.Collections.Generic;
namespace Duplicati.Library.Snapshots
{
/// <summary>
/// Handler for providing a snapshot like access to files and folders
/// </summary>
public class NoSnapshotLinux : NoSnapshot
{
public NoSnapshotLinux(string[] sourcefolders)
: base(sourcefolders)
{
}
public NoSnapshotLinux(string[] sourcefolders, Dictionary<string, string> options)
: base(sourcefolders, options)
{
}
/// <summary>
/// Returns the symlink target if the entry is a symlink, and null otherwise
/// </summary>
/// <param name="file">The file or folder to examine</param>
/// <returns>The symlink target</returns>
public override string GetSymlinkTarget(string file)
{
if (file.EndsWith(DIR_SEP))
return UnixSupport.File.GetSymlinkTarget(file.Substring(0, file.Length - 1));
else
return UnixSupport.File.GetSymlinkTarget(file);
}
/// <summary>
/// Gets the metadata for the given file or folder
/// </summary>
/// <returns>The metadata for the given file or folder</returns>
/// <param name="file">The file or folder to examine</param>
public override Dictionary<string, string> GetMetadata(string file)
{
var f = file.EndsWith(DIR_SEP) ? file.Substring(0, file.Length - 1) : file;
var n = UnixSupport.File.GetExtendedAttributes(f);
var dict = new Dictionary<string, string>();
foreach(var x in n)
dict[x.Key] = Convert.ToBase64String(x.Value);
var fse = UnixSupport.File.GetUserGroupAndPermissions(f);
dict["unix:uid-gid-perm"] = string.Format("{0}-{1}-{2}", fse.UID, fse.GID, fse.Permissions);
return dict;
}
/// <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="file">The file or folder to examine</param>
public override bool IsBlockDevice(string file)
{
var n = UnixSupport.File.GetFileType(file.EndsWith(DIR_SEP) ? file.Substring(0, file.Length - 1) : file);
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="file">The file or folder to examine</param>
public override string HardlinkTargetID(string path)
{
path = path.EndsWith(DIR_SEP) ? path.Substring(0, path.Length - 1) : path;
if (UnixSupport.File.GetHardlinkCount(path) <= 1)
return null;
return UnixSupport.File.GetInodeTargetID(path);
}
}
}
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