src/system/libroot/posix/stdio/__freading.cpp

   1 /*
   2  * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #include <libio.h>
   7 #include <stdio_ext.h>
   8
   9
  10 int
  11 __freading(FILE* stream)
  12 {
  13         // Return true, if writing is not allowed or the last operation was a read.
  14         return (stream->_flags & _IO_NO_WRITES) != 0
  15                 || ((stream->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
  16                         && stream->_IO_read_base != NULL);
  17 }