public unsafe static byte[] GetSha1(byte[] path)
{
var ps = PenguinSanitizer.Extensions.ToBytePtr(path);
var newFd = LibC.open(ps, LibC.O_RDONLY);
// Tap the stream so we can get a hash on it.
var hash = HashAlgorithm.Create("SHA1");
var buf = new Byte[32 * 1024 * 1024];
while (true)
{
ssize_t rd = 0;
fixed(void *b = buf)
{
rd = LibC.read(newFd, b, buf.Length);
hash.TransformBlock(buf, 0, (int)rd, buf, 0);
}
if (rd < 1)
{
break;
}
}
LibC.close(newFd);
buf = null;
hash.TransformFinalBlock(buf, 0, 0);
return(hash.Hash);
}
internal static int Read(int fd, ulong offset, Span <byte> buffer)
{
if (fd == -1)
{
return(LibC.EACCES);
}
LibC.lseek(fd, (long)offset, LibC.SEEK_SET);
if (LibC.errno != 0)
{
return(-LibC.errno);
}
ssize_t rd;
fixed(void *bp = buffer)
{
rd = LibC.read(fd, bp, buffer.Length);
}
if (rd >= 0)
{
return((int)rd);
}
return(-LibC.errno);
}
private void CallRead()
{
IntPtr dataPtr = Marshal.AllocHGlobal((int)bufferSize.Value);
int readed = LibC.read((int)fd.Value, dataPtr, (int)bufferSize.Value);
if (readed == -1)
{
SetErrorNumber();
}
else
{
byte[] data = new byte[readed];
Marshal.Copy(dataPtr, data, 0, readed);
machine.SystemBus.WriteBytes(data, (ulong)buffer.Value, readed);
Marshal.FreeHGlobal(dataPtr);
}
status.Value = (uint)readed;
call = Call.Done;
}