glibc/libio/genops.c

2    This file is part of the GNU C Library.
19    As a special exception, if you link the code in this file with
23    however invalidate any other reasons why the executable file
61   if (fp->file._flags & _IO_LINKED)
71 	   f = (struct _IO_FILE_plus **) &(*f)->file._chain)
75 	      *f = (struct _IO_FILE_plus *) fp->file._chain;
80       fp->file._flags &= ~_IO_LINKED;
95   if ((fp->file._flags & _IO_LINKED) == 0)
97       fp->file._flags |= _IO_LINKED;
104       fp->file._chain = (_IO_FILE *) INTUSE(_IO_list_all);
232 __overflow(_IO_FILE *file, int character)
235 	if (file->_mode == 0)
236 		_IO_fwide(file, -1);
238 	return _IO_OVERFLOW(file, character);
326 __underflow(_IO_FILE *file)
329 	if (file->_vtable_offset == 0 && _IO_fwide(file, -1) != -1)
333 	if (file->_mode == 0)
334 		_IO_fwide(file, -1);
336 	if (_IO_in_put_mode(file) && INTUSE(_IO_switch_to_get_mode)(file) == EOF)
339 	if (file->_IO_read_ptr < file->_IO_read_end)
340 		return *(unsigned char *)file->_IO_read_ptr;
342 	if (_IO_in_backup(file)) {
343 		_IO_switch_to_main_get_area(file);
345 		if (file->_IO_read_ptr < file->_IO_read_end)
346 			return *(unsigned char *)file->_IO_read_ptr;
348 	if (_IO_have_markers(file)) {
349 		if (save_for_backup(file, file->_IO_read_end))
351     } else if (_IO_have_backup(file))
352 		INTUSE(_IO_free_backup_area)(file);
354 	return _IO_UNDERFLOW(file);
360 __uflow(_IO_FILE *file)
363 	if (file->_vtable_offset == 0 && _IO_fwide(file, -1) != -1)
367 	if (file->_mode == 0)
368 		_IO_fwide(file, -11);
370 	if (_IO_in_put_mode(file) && INTUSE(_IO_switch_to_get_mode)(file) == EOF)
373 	if (file->_IO_read_ptr < file->_IO_read_end)
374 		return *(unsigned char *)file->_IO_read_ptr++;
376 	if (_IO_in_backup(file)) {
377 		_IO_switch_to_main_get_area(file);
379 		if (file->_IO_read_ptr < file->_IO_read_end)
380 			return *(unsigned char *)file->_IO_read_ptr++;
383 	if (_IO_have_markers(file)) {
384 		if (save_for_backup(file, file->_IO_read_end))
386 	} else if (_IO_have_backup(file))
387 		INTUSE(_IO_free_backup_area)(file);
389 	return _IO_UFLOW(file);