write function
Writes buf
to FD. Return the number of bytes written;
Throws a PosixException if an error occurs.
Implementation
int write(
int fd,
List<int> buf, // ffi.Pointer<ffi.Void> buf,
) {
final cBuf = copyDartListToCBuff(buf);
_write ??= Libc().dylib.lookupFunction<
ffi.Int64 Function(ffi.Int32, ffi.Pointer<ffi.Int8>, ffi.Uint64),
_dart_write>('write');
final written = _write!(
fd,
cBuf,
buf.length,
);
_throwIfErrno('pwrite', written, cBuf);
malloc.free(cBuf);
return written;
}