1 /* @(#)setbuf.c 4.2 (Berkeley) 10/05/82 */ 2 #include <stdio.h> 3 4 setbuf(iop, buf) 5 register struct _iobuf *iop; 6 char *buf; 7 { 8 if (iop->_base != NULL && iop->_flag&_IOMYBUF) 9 free(iop->_base); 10 iop->_flag &= ~(_IOMYBUF|_IONBF|_IOLBF); 11 if ((iop->_base = buf) == NULL) { 12 iop->_flag |= _IONBF; 13 iop->_bufsiz = NULL; 14 } else { 15 iop->_ptr = iop->_base; 16 iop->_bufsiz = BUFSIZ; 17 } 18 iop->_cnt = 0; 19 } 20