1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 /* 33 * NAME 34 * copystream - copy one FILE stream to another 35 * 36 * SYNOPSIS 37 * int copystream(FILE *infp, FILE *outfp) 38 * 39 * DESCRIPTION 40 * copystream() copies one stream to another. The stream 41 * infp must be opened for reading and the stream outfp 42 * must be opened for writing. 43 * 44 * It returns true if the stream is successively copied; 45 * false if any writes fail. 46 */ 47 48 #include "libmail.h" 49 #include <sys/types.h> 50 51 int 52 copystream(FILE *infp, FILE *outfp) 53 { 54 char buffer[BUFSIZ]; 55 size_t nread; 56 57 while ((nread = fread(buffer, sizeof (char), sizeof (buffer), 58 infp)) > 0) 59 if (fwrite(buffer, sizeof (char), nread, outfp) != nread) 60 return (0); 61 return (1); 62 } 63