1 /* @(#)setbuf.c 4.1 (Berkeley) 12/21/80 */ 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 else 14 iop->_ptr = iop->_base; 15 iop->_cnt = 0; 16 } 17