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-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Close.cs15
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FLock.cs31
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FSync.cs15
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FTruncate.cs15
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Fcntl.cs21
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.GetCwd.cs74
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.GetUnixName.cs21
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.LSeek.cs22
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.MksTemps.cs17
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Open.cs15
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.OpenFlags.cs27
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.PathConf.cs73
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Permissions.cs32
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.PosixFAdvise.cs36
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Read.cs25
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Stat.cs59
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Unlink.cs15
-rw-r--r--src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Write.cs27
18 files changed, 540 insertions, 0 deletions
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Close.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Close.cs
new file mode 100644
index 0000000000..8d192398a0
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Close.cs
@@ -0,0 +1,15 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Close", SetLastError = true)]
+ internal static extern int Close(IntPtr fd);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FLock.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FLock.cs
new file mode 100644
index 0000000000..22934a3e77
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FLock.cs
@@ -0,0 +1,31 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ internal enum LockOperations : int
+ {
+ LOCK_SH = 1, /* shared lock */
+ LOCK_EX = 2, /* exclusive lock */
+ LOCK_NB = 4, /* don't block when locking*/
+ LOCK_UN = 8, /* unlock */
+ }
+
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_FLock", SetLastError = true)]
+ internal static extern int FLock(SafeFileHandle fd, LockOperations operation);
+
+ /// <summary>
+ /// Exposing this for SafeFileHandle.ReleaseHandle() to call.
+ /// Normal callers should use FLock(SafeFileHandle fd).
+ /// </summary>
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_FLock", SetLastError = true)]
+ internal static extern int FLock(IntPtr fd, LockOperations operation);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FSync.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FSync.cs
new file mode 100644
index 0000000000..e3ab970931
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FSync.cs
@@ -0,0 +1,15 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_FSync", SetLastError = true)]
+ internal static extern int FSync(SafeFileHandle fd);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FTruncate.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FTruncate.cs
new file mode 100644
index 0000000000..5dad650362
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.FTruncate.cs
@@ -0,0 +1,15 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_FTruncate", SetLastError = true)]
+ internal static extern int FTruncate(SafeFileHandle fd, long length);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Fcntl.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Fcntl.cs
new file mode 100644
index 0000000000..23b48a4f5d
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Fcntl.cs
@@ -0,0 +1,21 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ internal enum LockType : short
+ {
+ F_WRLCK = 1, // exclusive or write lock
+ F_UNLCK = 2 // unlock
+ }
+
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_LockFileRegion", SetLastError=true)]
+ internal static extern int LockFileRegion(SafeHandle fd, long offset, long length, LockType lockType);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.GetCwd.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.GetCwd.cs
new file mode 100644
index 0000000000..724e342342
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.GetCwd.cs
@@ -0,0 +1,74 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetCwd", SetLastError = true)]
+ private static unsafe extern byte* GetCwd(byte* buffer, int bufferLength);
+
+ internal static unsafe string GetCwd()
+ {
+ const int StackLimit = 256;
+
+ // First try to get the path into a buffer on the stack
+ byte* stackBuf = stackalloc byte[StackLimit];
+ string result = GetCwdHelper(stackBuf, StackLimit);
+ if (result != null)
+ {
+ return result;
+ }
+
+ // If that was too small, try increasing large buffer sizes
+ // until we get one that works or until we hit MaxPath.
+ int maxPath = Interop.Sys.MaxPath;
+ if (StackLimit < maxPath)
+ {
+ int bufferSize = StackLimit;
+ do
+ {
+ checked { bufferSize *= 2; }
+ var buf = new byte[Math.Min(bufferSize, maxPath)];
+ fixed (byte* ptr = buf)
+ {
+ result = GetCwdHelper(ptr, buf.Length);
+ if (result != null)
+ {
+ return result;
+ }
+ }
+ }
+ while (bufferSize < maxPath);
+ }
+
+ // If we couldn't get the cwd with a MaxPath-sized buffer, something's wrong.
+ throw Interop.GetExceptionForIoErrno(new ErrorInfo(Interop.Error.ENAMETOOLONG));
+ }
+
+ private static unsafe string GetCwdHelper(byte* ptr, int bufferSize)
+ {
+ // Call the real getcwd
+ byte* result = GetCwd(ptr, bufferSize);
+
+ // If it returned non-null, the null-terminated path is in the buffer
+ if (result != null)
+ {
+ return Marshal.PtrToStringAnsi((IntPtr)ptr);
+ }
+
+ // Otherwise, if it failed due to the buffer being too small, return null;
+ // for anything else, throw.
+ ErrorInfo errorInfo = Interop.Sys.GetLastErrorInfo();
+ if (errorInfo.Error == Interop.Error.ERANGE)
+ {
+ return null;
+ }
+ throw Interop.GetExceptionForIoErrno(errorInfo);
+ }
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.GetUnixName.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.GetUnixName.cs
new file mode 100644
index 0000000000..33664c4d39
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.GetUnixName.cs
@@ -0,0 +1,21 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetUnixName")]
+ private static extern IntPtr GetUnixNamePrivate();
+
+ internal static string GetUnixName()
+ {
+ IntPtr ptr = GetUnixNamePrivate();
+ return Marshal.PtrToStringAnsi(ptr);
+ }
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.LSeek.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.LSeek.cs
new file mode 100644
index 0000000000..7f8df7c6bf
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.LSeek.cs
@@ -0,0 +1,22 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ internal enum SeekWhence
+ {
+ SEEK_SET = 0,
+ SEEK_CUR = 1,
+ SEEK_END = 2
+ }
+
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_LSeek", SetLastError = true)]
+ internal static extern long LSeek(SafeFileHandle fd, long offset, SeekWhence whence);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.MksTemps.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.MksTemps.cs
new file mode 100644
index 0000000000..b8694d9007
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.MksTemps.cs
@@ -0,0 +1,17 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_MksTemps", SetLastError = true)]
+ internal static extern IntPtr MksTemps(
+ byte[] template,
+ int suffixlen);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Open.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Open.cs
new file mode 100644
index 0000000000..a9a994c78c
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Open.cs
@@ -0,0 +1,15 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Open", SetLastError = true)]
+ internal static extern SafeFileHandle Open(string filename, OpenFlags flags, int mode);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.OpenFlags.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.OpenFlags.cs
new file mode 100644
index 0000000000..f9e54c3cbc
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.OpenFlags.cs
@@ -0,0 +1,27 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [Flags]
+ internal enum OpenFlags
+ {
+ // Access modes (mutually exclusive)
+ O_RDONLY = 0x0000,
+ O_WRONLY = 0x0001,
+ O_RDWR = 0x0002,
+
+ // Flags (combinable)
+ O_CLOEXEC = 0x0010,
+ O_CREAT = 0x0020,
+ O_EXCL = 0x0040,
+ O_TRUNC = 0x0080,
+ O_SYNC = 0x0100,
+ }
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.PathConf.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.PathConf.cs
new file mode 100644
index 0000000000..4a1fcf67d0
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.PathConf.cs
@@ -0,0 +1,73 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ internal static int DEFAULT_PC_NAME_MAX = 255;
+
+ internal enum PathConfName : int
+ {
+ PC_LINK_MAX = 1,
+ PC_MAX_CANON = 2,
+ PC_MAX_INPUT = 3,
+ PC_NAME_MAX = 4,
+ PC_PATH_MAX = 5,
+ PC_PIPE_BUF = 6,
+ PC_CHOWN_RESTRICTED = 7,
+ PC_NO_TRUNC = 8,
+ PC_VDISABLE = 9,
+ }
+
+ /// <summary>The maximum path length for the system. -1 if it hasn't yet been initialized.</summary>
+ private static int s_maxPath = -1;
+
+ /// <summary>The maximum name length for the system. -1 if it hasn't yet been initialized.</summary>
+ private static int s_maxName = -1;
+
+ internal static int MaxPath
+ {
+ get
+ {
+ // Benign race condition on cached value
+ if (s_maxPath < 0)
+ {
+ // GetMaximumPath returns a long from PathConf
+ // but our callers expect an int so we need to convert.
+ long temp = GetMaximumPath();
+ if (temp > int.MaxValue)
+ s_maxPath = int.MaxValue;
+ else
+ s_maxPath = Convert.ToInt32(temp);
+ }
+ return s_maxPath;
+ }
+ }
+
+ internal static int MaxName
+ {
+ get
+ {
+ // Benign race condition on cached value
+ if (s_maxName < 0)
+ {
+ int result = PathConf("/", PathConfName.PC_NAME_MAX);
+ s_maxName = result >= 0 ? result : DEFAULT_PC_NAME_MAX;
+ }
+
+ return s_maxName;
+ }
+ }
+
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_PathConf", SetLastError = true)]
+ private static extern int PathConf(string path, PathConfName name);
+
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetMaximumPath")]
+ private static extern long GetMaximumPath();
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Permissions.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Permissions.cs
new file mode 100644
index 0000000000..f1d13787d2
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Permissions.cs
@@ -0,0 +1,32 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [Flags]
+ internal enum Permissions
+ {
+ Mask = S_IRWXU | S_IRWXG | S_IRWXO,
+
+ S_IRWXU = S_IRUSR | S_IWUSR | S_IXUSR,
+ S_IRUSR = 0x100,
+ S_IWUSR = 0x80,
+ S_IXUSR = 0x40,
+
+ S_IRWXG = S_IRGRP | S_IWGRP | S_IXGRP,
+ S_IRGRP = 0x20,
+ S_IWGRP = 0x10,
+ S_IXGRP = 0x8,
+
+ S_IRWXO = S_IROTH | S_IWOTH | S_IXOTH,
+ S_IROTH = 0x4,
+ S_IWOTH = 0x2,
+ S_IXOTH = 0x1,
+ }
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.PosixFAdvise.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.PosixFAdvise.cs
new file mode 100644
index 0000000000..69e39b30d2
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.PosixFAdvise.cs
@@ -0,0 +1,36 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ internal enum FileAdvice : int
+ {
+ POSIX_FADV_NORMAL = 0, /* no special advice, the default value */
+ POSIX_FADV_RANDOM = 1, /* random I/O access */
+ POSIX_FADV_SEQUENTIAL = 2, /* sequential I/O access */
+ POSIX_FADV_WILLNEED = 3, /* will need specified pages */
+ POSIX_FADV_DONTNEED = 4, /* don't need the specified pages */
+ POSIX_FADV_NOREUSE = 5, /* data will only be acessed once */
+ }
+
+ /// <summary>
+ /// Notifies the OS kernel that the specified file will be accessed in a particular way soon; this allows the kernel to
+ /// potentially optimize the access pattern of the file.
+ /// </summary>
+ /// <param name="fd">The file descriptor of the file</param>
+ /// <param name="offset">The start of the region to advise about</param>
+ /// <param name="length">The number of bytes of the region (until the end of the file if 0)</param>
+ /// <param name="advice">The type of advice to give the kernel about the specified region</param>
+ /// <returns>
+ /// Returns 0 on success; otherwise, the error code is returned
+ /// </returns>
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_PosixFAdvise", SetLastError = false /* this is explicitly called out in the man page */)]
+ internal static extern int PosixFAdvise(SafeFileHandle fd, long offset, long length, FileAdvice advice);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Read.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Read.cs
new file mode 100644
index 0000000000..812ae348dc
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Read.cs
@@ -0,0 +1,25 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ /// <summary>
+ /// Reads a number of bytes from an open file descriptor into a specified buffer.
+ /// </summary>
+ /// <param name="fd">The open file descriptor to try to read from</param>
+ /// <param name="buffer">The buffer to read info into</param>
+ /// <param name="count">The size of the buffer</param>
+ /// <returns>
+ /// Returns the number of bytes read on success; otherwise, -1 is returned
+ /// Note - on fail. the position of the stream may change depending on the platform; consult man 2 read for more info
+ /// </returns>
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Read", SetLastError = true)]
+ internal static unsafe extern int Read(SafeFileHandle fd, byte* buffer, int count);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Stat.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Stat.cs
new file mode 100644
index 0000000000..a8bc2ec7d1
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Stat.cs
@@ -0,0 +1,59 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ // Even though csc will by default use a sequential layout, a CS0649 warning as error
+ // is produced for un-assigned fields when no StructLayout is specified.
+ //
+ // Explicitly saying Sequential disables that warning/error for consumers which only
+ // use Stat in debug builds.
+ [StructLayout(LayoutKind.Sequential)]
+ internal struct FileStatus
+ {
+ internal FileStatusFlags Flags;
+ internal int Mode;
+ internal uint Uid;
+ internal uint Gid;
+ internal long Size;
+ internal long ATime;
+ internal long MTime;
+ internal long CTime;
+ internal long BirthTime;
+ }
+
+ internal static class FileTypes
+ {
+ internal const int S_IFMT = 0xF000;
+ internal const int S_IFIFO = 0x1000;
+ internal const int S_IFCHR = 0x2000;
+ internal const int S_IFDIR = 0x4000;
+ internal const int S_IFREG = 0x8000;
+ internal const int S_IFLNK = 0xA000;
+ internal const int S_IFSOCK = 0xC000;
+ }
+
+ [Flags]
+ internal enum FileStatusFlags
+ {
+ None = 0,
+ HasBirthTime = 1,
+ }
+
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_FStat", SetLastError = true)]
+ internal static extern int FStat(SafeFileHandle fd, out FileStatus output);
+
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Stat", SetLastError = true)]
+ internal static extern int Stat(string path, out FileStatus output);
+
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_LStat", SetLastError = true)]
+ internal static extern int LStat(string path, out FileStatus output);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Unlink.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Unlink.cs
new file mode 100644
index 0000000000..829210fa7e
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Unlink.cs
@@ -0,0 +1,15 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Unlink", SetLastError = true)]
+ internal static extern int Unlink(string pathname);
+ }
+}
diff --git a/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Write.cs b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Write.cs
new file mode 100644
index 0000000000..c14fc26263
--- /dev/null
+++ b/src/mscorlib/corefx/Interop/Unix/System.Native/Interop.Write.cs
@@ -0,0 +1,27 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+internal static partial class Interop
+{
+ internal static partial class Sys
+ {
+ /// <summary>
+ /// Writes the specified buffer to the provided open file descriptor
+ /// </summary>
+ /// <param name="fd">The file descriptor to try and write to</param>
+ /// <param name="buffer">The data to attempt to write</param>
+ /// <param name="bufferSize">The amount of data to write, in bytes</param>
+ /// <returns>
+ /// Returns the number of bytes written on success; otherwise, returns -1 and sets errno
+ /// </returns>
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Write", SetLastError = true)]
+ internal static unsafe extern int Write(SafeFileHandle fd, byte* buffer, int bufferSize);
+
+ [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Write", SetLastError = true)]
+ internal static unsafe extern int Write(int fd, byte* buffer, int bufferSize);
+ }
+}