-/* A system call that opens a file identified by name in a given mode. Return
- a file descriptor uniquely identifying that file.
- (The mode is the return value of the _PDCLIB_filemode() function.)
-*/
-_PDCLIB_fd_t _PDCLIB_open( char const * const filename, unsigned int mode );
-
-/* A system call that writes a stream's buffer.
- Returns 0 on success, EOF on write error.
- Sets stream error flags and errno appropriately on error.
-*/
-int _PDCLIB_flushbuffer( struct _PDCLIB_file_t * stream );
-
-/* A system call that fills a stream's buffer.
- Returns 0 on success, EOF on read error / EOF.
- Sets stream EOF / error flags and errno appropriately on error.
-*/
-int _PDCLIB_fillbuffer( struct _PDCLIB_file_t * stream );
-
-/* A system call that repositions within a file. Returns new offset on success,
- -1 / errno on error.
-*/
-_PDCLIB_int64_t _PDCLIB_seek( struct _PDCLIB_file_t * stream, _PDCLIB_int64_t offset, int whence );
-
-/* A system call that closes a file identified by given file descriptor. Return
- zero on success, non-zero otherwise.
-*/
-int _PDCLIB_close( _PDCLIB_fd_t fd );
+/* Open the file with the given name and mode. Return the file descriptor in
+ * *fd and a pointer to the operations structure in **ops on success.
+ *
+ * Return true on success and false on failure.
+ */
+bool _PDCLIB_open(
+ _PDCLIB_fd_t* fd, const _PDCLIB_fileops_t** ops,
+ char const * filename, unsigned int mode );