extern.h revision 92922
11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1991, 1993 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 3. All advertising materials mentioning features or use of this software 141590Srgrimes * must display the following acknowledgement: 151590Srgrimes * This product includes software developed by the University of 161590Srgrimes * California, Berkeley and its contributors. 171590Srgrimes * 4. Neither the name of the University nor the names of its contributors 181590Srgrimes * may be used to endorse or promote products derived from this software 191590Srgrimes * without specific prior written permission. 201590Srgrimes * 211590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311590Srgrimes * SUCH DAMAGE. 321590Srgrimes * 331590Srgrimes * @(#)extern.h 8.1 (Berkeley) 6/6/93 3474876Sdwmalone * 3574876Sdwmalone * $FreeBSD: head/usr.bin/tail/extern.h 92922 2002-03-22 01:42:45Z imp $ 361590Srgrimes */ 371590Srgrimes 3874876Sdwmalone#define WR(p, size) do { \ 3987712Smarkm if (write(STDOUT_FILENO, p, size) != (ssize_t)size) \ 4074876Sdwmalone oerr(); \ 4174876Sdwmalone } while(0) 421590Srgrimes 4374876Sdwmalone#define TAILMAPLEN (4<<20) 4474876Sdwmalone 4574876Sdwmalonestruct mapinfo { 4674876Sdwmalone off_t mapoff; 4774876Sdwmalone off_t maxoff; 4874876Sdwmalone size_t maplen; 4974876Sdwmalone char *start; 5074876Sdwmalone int fd; 5174876Sdwmalone}; 5274876Sdwmalone 531590Srgrimesenum STYLE { NOTSET = 0, FBYTES, FLINES, RBYTES, RLINES, REVERSE }; 541590Srgrimes 5592922Simpvoid forward(FILE *, enum STYLE, off_t, struct stat *); 5692922Simpvoid reverse(FILE *, enum STYLE, off_t, struct stat *); 571590Srgrimes 5892922Simpint bytes(FILE *, off_t); 5992922Simpint lines(FILE *, off_t); 601590Srgrimes 6192922Simpvoid ierr(void); 6292922Simpvoid oerr(void); 6392922Simpint mapprint(struct mapinfo *, off_t, off_t); 6492922Simpint maparound(struct mapinfo *, off_t); 651590Srgrimes 6635081Speterextern int Fflag, fflag, rflag, rval; 6787712Smarkmextern const char *fname; 68