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// 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);
}
}
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