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* Logging: Redirect StdErr into logging system * Remove Mono.Unix * Apply suggestions from code review Co-authored-by: riperiperi <rhy3756547@hotmail.com> * Address comments --------- Co-authored-by: Mary <thog@protonmail.com> Co-authored-by: riperiperi <rhy3756547@hotmail.com> Co-authored-by: Mary <mary@mary.zone>
156 lines
3.8 KiB
C#
156 lines
3.8 KiB
C#
using System;
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using System.IO;
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using System.Runtime.InteropServices;
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using System.Runtime.Versioning;
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namespace Ryujinx.Common.SystemInterop
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{
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[SupportedOSPlatform("linux")]
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[SupportedOSPlatform("macos")]
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public partial class UnixStream : Stream, IDisposable
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{
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private const int InvalidFd = -1;
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private int _fd;
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[LibraryImport("libc", SetLastError = true)]
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private static partial long read(int fd, IntPtr buf, ulong count);
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[LibraryImport("libc", SetLastError = true)]
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private static partial long write(int fd, IntPtr buf, ulong count);
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[LibraryImport("libc", SetLastError = true)]
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private static partial int close(int fd);
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public UnixStream(int fd)
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{
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if (InvalidFd == fd)
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{
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throw new ArgumentException("Invalid file descriptor");
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}
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_fd = fd;
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CanRead = read(fd, IntPtr.Zero, 0) != -1;
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CanWrite = write(fd, IntPtr.Zero, 0) != -1;
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}
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~UnixStream()
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{
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Close();
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}
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public override bool CanRead { get; }
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public override bool CanWrite { get; }
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public override bool CanSeek => false;
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public override long Length => throw new NotSupportedException();
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public override long Position
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{
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get => throw new NotSupportedException();
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set => throw new NotSupportedException();
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}
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public override void Flush()
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{
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}
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public override unsafe int Read([In, Out] byte[] buffer, int offset, int count)
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{
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if (offset < 0 || offset > (buffer.Length - count) || count < 0)
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{
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throw new ArgumentOutOfRangeException();
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}
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if (buffer.Length == 0)
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{
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return 0;
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}
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long r = 0;
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fixed (byte* buf = &buffer[offset])
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{
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do
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{
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r = read(_fd, (IntPtr)buf, (ulong)count);
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} while (ShouldRetry(r));
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}
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return (int)r;
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}
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public override unsafe void Write(byte[] buffer, int offset, int count)
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{
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if (offset < 0 || offset > (buffer.Length - count) || count < 0)
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{
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throw new ArgumentOutOfRangeException();
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}
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if (buffer.Length == 0)
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{
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return;
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}
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fixed (byte* buf = &buffer[offset])
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{
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long r = 0;
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do {
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r = write(_fd, (IntPtr)buf, (ulong)count);
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} while (ShouldRetry(r));
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}
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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throw new NotSupportedException();
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}
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public override void SetLength(long value)
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{
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throw new NotSupportedException();
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}
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public override void Close()
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{
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if (_fd == InvalidFd)
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{
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return;
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}
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Flush();
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int r;
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do {
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r = close(_fd);
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} while (ShouldRetry(r));
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_fd = InvalidFd;
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}
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void IDisposable.Dispose()
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{
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Close();
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}
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private bool ShouldRetry(long r)
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{
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if (r == -1)
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{
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const int eintr = 4;
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int errno = Marshal.GetLastPInvokeError();
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if (errno == eintr)
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{
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return true;
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}
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throw new SystemException($"Operation failed with error 0x{errno:X}");
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}
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return false;
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}
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}
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}
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