Improve/fix SerialStream.Dispose (dotnet/corefxdotnet/coreclr#33221)

* Improve/fix SerialStream.Dispose

* Review feedback

* remove unused using statement

* Use ToFileDescriptor

Signed-off-by: dotnet-bot <dotnet-bot@microsoft.com>
Commit migrated from https://github.com/dotnet/coreclr/commit/0eb2dbbc3cd45b2a118aa44ac05bac9b8ca1eec4

diff --git a/src/libraries/System.Private.CoreLib/src/Interop/Unix/System.Native/Interop.Read.cs b/src/libraries/System.Private.CoreLib/src/Interop/Unix/System.Native/Interop.Read.cs
index 1be5e78..233feab 100644 (file)
--- a/src/libraries/System.Private.CoreLib/src/Interop/Unix/System.Native/Interop.Read.cs
+++ b/src/libraries/System.Private.CoreLib/src/Interop/Unix/System.Native/Interop.Read.cs
@@ -20,6 +20,6 @@ internal static partial class Interop
         /// 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 extern unsafe int Read(SafeFileHandle fd, byte* buffer, int count);
+        internal static extern unsafe int Read(SafeHandle fd, byte* buffer, int count);
     }
 }

diff --git a/src/libraries/System.Private.CoreLib/src/Interop/Unix/System.Native/Interop.Write.cs b/src/libraries/System.Private.CoreLib/src/Interop/Unix/System.Native/Interop.Write.cs
index 0636615..fb06d46 100644 (file)
--- a/src/libraries/System.Private.CoreLib/src/Interop/Unix/System.Native/Interop.Write.cs
+++ b/src/libraries/System.Private.CoreLib/src/Interop/Unix/System.Native/Interop.Write.cs
@@ -19,7 +19,7 @@ internal static partial class Interop
         /// 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 extern unsafe int Write(SafeFileHandle fd, byte* buffer, int bufferSize);
+        internal static extern unsafe int Write(SafeHandle fd, byte* buffer, int bufferSize);
 
         [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Write", SetLastError = true)]
         internal static extern unsafe int Write(int fd, byte* buffer, int bufferSize);