2 // Mono.Unix/UnixSymbolicLinkInfo.cs
5 // Jonathan Pryor (jonpryor@vt.edu)
7 // (C) 2004-2006 Jonathan Pryor
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 public sealed class UnixSymbolicLinkInfo : UnixFileSystemInfo
38 public UnixSymbolicLinkInfo (string path)
43 internal UnixSymbolicLinkInfo (string path, Native.Stat stat)
48 public override string Name {
49 get {return UnixPath.GetFileName (FullPath);}
52 [Obsolete ("Use GetContents()")]
53 public UnixFileSystemInfo Contents {
54 get {return GetContents ();}
57 public string ContentsPath {
63 public bool HasContents {
65 return TryReadLink () != null;
69 public UnixFileSystemInfo GetContents ()
72 return UnixFileSystemInfo.GetFileSystemEntry (
73 UnixPath.Combine (UnixPath.GetDirectoryName (FullPath),
77 public void CreateSymbolicLinkTo (string path)
79 int r = Native.Syscall.symlink (path, FullName);
80 UnixMarshal.ThrowExceptionForLastErrorIf (r);
83 public void CreateSymbolicLinkTo (UnixFileSystemInfo path)
85 int r = Native.Syscall.symlink (path.FullName, FullName);
86 UnixMarshal.ThrowExceptionForLastErrorIf (r);
89 public override void Delete ()
91 int r = Native.Syscall.unlink (FullPath);
92 UnixMarshal.ThrowExceptionForLastErrorIf (r);
96 public override void SetOwner (long owner, long group)
98 int r = Native.Syscall.lchown (FullPath, Convert.ToUInt32 (owner), Convert.ToUInt32 (group));
99 UnixMarshal.ThrowExceptionForLastErrorIf (r);
102 protected override bool GetFileStatus (string path, out Native.Stat stat)
104 return Native.Syscall.lstat (path, out stat) == 0;
107 private string ReadLink ()
109 string r = TryReadLink ();
111 UnixMarshal.ThrowExceptionForLastError ();
115 private string TryReadLink ()
117 StringBuilder sb = new StringBuilder ((int) base.Length+1);
118 int r = Native.Syscall.readlink (FullPath, sb);
121 return sb.ToString (0, r);