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 * 4. Neither the name of the University nor the names of its contributors 141590Srgrimes * may be used to endorse or promote products derived from this software 151590Srgrimes * without specific prior written permission. 161590Srgrimes * 171590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271590Srgrimes * SUCH DAMAGE. 281590Srgrimes * 291590Srgrimes * @(#)extern.h 8.1 (Berkeley) 6/6/93 3074876Sdwmalone * 3174876Sdwmalone * $FreeBSD$ 321590Srgrimes */ 331590Srgrimes 3474876Sdwmalone#define WR(p, size) do { \ 3587712Smarkm if (write(STDOUT_FILENO, p, size) != (ssize_t)size) \ 3674876Sdwmalone oerr(); \ 3774876Sdwmalone } while(0) 381590Srgrimes 3974876Sdwmalone#define TAILMAPLEN (4<<20) 4074876Sdwmalone 4174876Sdwmalonestruct mapinfo { 4274876Sdwmalone off_t mapoff; 4374876Sdwmalone off_t maxoff; 4474876Sdwmalone size_t maplen; 4574876Sdwmalone char *start; 4674876Sdwmalone int fd; 4774876Sdwmalone}; 4874876Sdwmalone 49137225Spaulstruct file_info { 50137225Spaul FILE *fp; 51137225Spaul char *file_name; 52137225Spaul struct stat st; 53137225Spaul}; 54137225Spaul 55137225Spaultypedef struct file_info file_info_t; 56137225Spaul 571590Srgrimesenum STYLE { NOTSET = 0, FBYTES, FLINES, RBYTES, RLINES, REVERSE }; 581590Srgrimes 59137225Spaulvoid follow(file_info_t *, enum STYLE, off_t); 60193488Sbrianvoid forward(FILE *, const char *, enum STYLE, off_t, struct stat *); 61193488Sbrianvoid reverse(FILE *, const char *, enum STYLE, off_t, struct stat *); 621590Srgrimes 63193488Sbrianint bytes(FILE *, const char *, off_t); 64193488Sbrianint lines(FILE *, const char *, off_t); 651590Srgrimes 66193488Sbrianvoid ierr(const char *); 6792922Simpvoid oerr(void); 6892922Simpint mapprint(struct mapinfo *, off_t, off_t); 6992922Simpint maparound(struct mapinfo *, off_t); 70264047Sjhvoid printfn(const char *, int); 711590Srgrimes 72160045Sflzextern int Fflag, fflag, qflag, rflag, rval, no_files; 73