Added return values to documentation.

Claunia.IO/ChangeLog

@@ -1,3 +1,11 @@
+2015-04-25  Natalia Portillo  <claunia@claunia.com>
+
+	* Interop/Apple/Interop.Apple.stat.cs:
+	* Interop/Linux/Interop.Linux.uname.cs:
+	* Interop/Apple/Interop.Apple.uname.cs:
+	* Interop/Apple/Interop.Apple.getattrlist.cs:
+	  Added return values to documentation.
+
 2015-04-25  Natalia Portillo  <claunia@claunia.com>
 
 	* Claunia.IO.csproj:

Claunia.IO/Interop/Apple/Interop.Apple.getattrlist.cs

@@ -741,6 +741,7 @@ internal static partial class Interop
         /// <param name="attrBuf">Pointer to a buffer to store the attributes on it.</param>
         /// <param name="attrBufSize">Allocated size of <paramref name="attrBuf"/>.</param>
         /// <param name="options"><see cref="getAttrListOptions"/>.</param>
+        /// <returns>On success, 0. On failure, -1, and errno is set.</returns>
         [DllImport(Libraries.Libc, SetLastError = true)]
         public static extern int getattrlist(string path, AttrList attrList, IntPtr attrBuf, UInt32 attrBufSize, UInt32 options);
 
@@ -753,6 +754,7 @@ internal static partial class Interop
         /// <param name="attrBuf">Pointer to a buffer that store the attributes on it.</param>
         /// <param name="attrBufSize">Allocated size of <paramref name="attrBuf"/>.</param>
         /// <param name="options"><see cref="getAttrListOptions"/>.</param>
+        /// <returns>On success, 0. On failure, -1, and errno is set.</returns>
         [DllImport(Libraries.Libc, SetLastError = true)]
         public static extern int setattrlist(string path, AttrList attrList, IntPtr attrBuf, UInt32 attrBufSize, UInt32 options);
     }

Claunia.IO/Interop/Apple/Interop.Apple.stat.cs

@@ -438,6 +438,7 @@ internal static partial class Interop
         /// </summary>
         /// <param name="path">Path to the file.</param>
         /// <param name="buf"><see cref="Stat"/> on 32 bit systems and <see cref="Stat64"/> on 64 bit systems.</param>
+        /// <returns>On success, 0. On failure, -1, and errno is set.</returns>
         [DllImport(Libraries.Libc, SetLastError = true)]
         public static extern int stat(string path, out Stat buf);
 
@@ -447,6 +448,7 @@ internal static partial class Interop
         /// </summary>
         /// <param name="path">Path to the file.</param>
         /// <param name="buf"><see cref="Stat64"/>.</param>
+        /// <returns>On success, 0. On failure, -1, and errno is set.</returns>
         [DllImport(Libraries.Libc, SetLastError = true)]
         public static extern int stat64(string path, out Stat64 buf);
     }

Claunia.IO/Interop/Apple/Interop.Apple.uname.cs

@@ -68,6 +68,7 @@ internal static partial class Interop
         /// Calls to system's uname(3)
         /// </summary>
         /// <param name="name"><see cref="utsname"/>.</param>
+        /// <returns>On success, 0. On failure, -1, and errno is set.</returns>
         [DllImport("libc", SetLastError = true)]
         internal static extern int uname(out utsname name);
     }

Claunia.IO/Interop/Linux/Interop.Linux.uname.cs

@@ -72,6 +72,7 @@ internal static partial class Interop
         /// Calls to system's uname(3)
         /// </summary>
         /// <param name="name"><see cref="utsname"/>.</param>
+        /// <returns>On success, 0. On failure, -1, and errno is set.</returns>
         [DllImport("libc", SetLastError = true)]
         internal static extern int uname(out utsname name);
     }