open_read - open a file for reading

       open_read opens the file filename for reading and returns the file handle.  If there was an error opening
       the file, open_read returns -1 and sets errno accordingly.

       open_read - open a file for reading

open(2)

                                                                                                    open_read(3)

#include<libowfat/open.h>

       int open_read(const char *filename);