49 __smakebuf(FILE *fp)  in __smakebuf()  argument
56 	if (fp->_flags & __SNBF) {  in __smakebuf()
57 		fp->_bf._base = fp->_p = fp->_nbuf;  in __smakebuf()
58 		fp->_bf._size = 1;  in __smakebuf()
61 	flags = __swhatbuf(fp, &size, &couldbetty);  in __smakebuf()
63 		fp->_flags |= __SNBF;  in __smakebuf()
64 		fp->_bf._base = fp->_p = fp->_nbuf;  in __smakebuf()
65 		fp->_bf._size = 1;  in __smakebuf()
69 	fp->_bf._base = fp->_p = p;  in __smakebuf()
70 	fp->_bf._size = size;  in __smakebuf()
71 	if (couldbetty && isatty(fp->_file))  in __smakebuf()
73 	fp->_flags |= flags;  in __smakebuf()
80 __swhatbuf(FILE *fp, size_t *bufsize, int *couldbetty)  in __swhatbuf()  argument
84 	if (fp->_file < 0 || fstat(fp->_file, &st) == -1) {  in __swhatbuf()
103 	fp->_blksize = st.st_blksize;  in __swhatbuf()
104 	return ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek ?  in __swhatbuf()