1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 */ 6 7 #if defined(LIBC_SCCS) && !defined(lint) 8 static char sccsid[] = "@(#)setbuffer.c 5.2 (Berkeley) 03/09/86"; 9 #endif LIBC_SCCS and not lint 10 11 #include <stdio.h> 12 13 setbuffer(iop, buf, size) 14 register FILE *iop; 15 char *buf; 16 int size; 17 { 18 if (iop->_base != NULL && iop->_flag&_IOMYBUF) 19 free(iop->_base); 20 iop->_flag &= ~(_IOMYBUF|_IONBF|_IOLBF); 21 if ((iop->_base = buf) == NULL) { 22 iop->_flag |= _IONBF; 23 iop->_bufsiz = NULL; 24 } else { 25 iop->_ptr = iop->_base; 26 iop->_bufsiz = size; 27 } 28 iop->_cnt = 0; 29 } 30 31 /* 32 * set line buffering for either stdout or stderr 33 */ 34 setlinebuf(iop) 35 register FILE *iop; 36 { 37 char *buf; 38 extern char *malloc(); 39 40 fflush(iop); 41 setbuffer(iop, NULL, 0); 42 buf = malloc(BUFSIZ); 43 if (buf != NULL) { 44 setbuffer(iop, buf, BUFSIZ); 45 iop->_flag |= _IOLBF|_IOMYBUF; 46 } 47 } 48