19b50d902SRodney W. Grimes /*- 29b50d902SRodney W. Grimes * Copyright (c) 1991, 1993 39b50d902SRodney W. Grimes * The Regents of the University of California. All rights reserved. 49b50d902SRodney W. Grimes * 59b50d902SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 69b50d902SRodney W. Grimes * modification, are permitted provided that the following conditions 79b50d902SRodney W. Grimes * are met: 89b50d902SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 99b50d902SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 109b50d902SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 119b50d902SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 129b50d902SRodney W. Grimes * documentation and/or other materials provided with the distribution. 139b50d902SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 149b50d902SRodney W. Grimes * must display the following acknowledgement: 159b50d902SRodney W. Grimes * This product includes software developed by the University of 169b50d902SRodney W. Grimes * California, Berkeley and its contributors. 179b50d902SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 189b50d902SRodney W. Grimes * may be used to endorse or promote products derived from this software 199b50d902SRodney W. Grimes * without specific prior written permission. 209b50d902SRodney W. Grimes * 219b50d902SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 229b50d902SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 239b50d902SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 249b50d902SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 259b50d902SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 269b50d902SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 279b50d902SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 289b50d902SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 299b50d902SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 309b50d902SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 319b50d902SRodney W. Grimes * SUCH DAMAGE. 329b50d902SRodney W. Grimes * 339b50d902SRodney W. Grimes * @(#)extern.h 8.1 (Berkeley) 6/6/93 34726098d3SDavid Malone * 35726098d3SDavid Malone * $FreeBSD$ 369b50d902SRodney W. Grimes */ 379b50d902SRodney W. Grimes 38726098d3SDavid Malone #define WR(p, size) do { \ 39814e3a92SMark Murray if (write(STDOUT_FILENO, p, size) != (ssize_t)size) \ 40726098d3SDavid Malone oerr(); \ 41726098d3SDavid Malone } while(0) 42726098d3SDavid Malone 43726098d3SDavid Malone #define TAILMAPLEN (4<<20) 44726098d3SDavid Malone 45726098d3SDavid Malone struct mapinfo { 46726098d3SDavid Malone off_t mapoff; 47726098d3SDavid Malone off_t maxoff; 48726098d3SDavid Malone size_t maplen; 49726098d3SDavid Malone char *start; 50726098d3SDavid Malone int fd; 51726098d3SDavid Malone }; 529b50d902SRodney W. Grimes 539b50d902SRodney W. Grimes enum STYLE { NOTSET = 0, FBYTES, FLINES, RBYTES, RLINES, REVERSE }; 549b50d902SRodney W. Grimes 553f330d7dSWarner Losh void forward(FILE *, enum STYLE, off_t, struct stat *); 563f330d7dSWarner Losh void reverse(FILE *, enum STYLE, off_t, struct stat *); 579b50d902SRodney W. Grimes 583f330d7dSWarner Losh int bytes(FILE *, off_t); 593f330d7dSWarner Losh int lines(FILE *, off_t); 609b50d902SRodney W. Grimes 613f330d7dSWarner Losh void ierr(void); 623f330d7dSWarner Losh void oerr(void); 633f330d7dSWarner Losh int mapprint(struct mapinfo *, off_t, off_t); 643f330d7dSWarner Losh int maparound(struct mapinfo *, off_t); 659b50d902SRodney W. Grimes 66eb1c9439SPeter Wemm extern int Fflag, fflag, rflag, rval; 67814e3a92SMark Murray extern const char *fname; 68