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Glenn L McGrath95ebf612001-10-25 14:18:08 +00001/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU Library General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 */
16
Glenn L McGrath7ca04f32002-09-25 02:47:48 +000017#include <sys/types.h>
Glenn L McGrath95ebf612001-10-25 14:18:08 +000018#include <errno.h>
Glenn L McGrath7134d652001-10-27 13:14:52 +000019#include <unistd.h>
Glenn L McGrath7ca04f32002-09-25 02:47:48 +000020#include <stdlib.h>
Glenn L McGrath95ebf612001-10-25 14:18:08 +000021
Glenn L McGrath237ae422002-11-03 14:05:15 +000022#include "libbb.h"
23#include "unarchive.h"
24
25extern void seek_by_jump(const archive_handle_t *archive_handle, const unsigned int amount)
Glenn L McGrath95ebf612001-10-25 14:18:08 +000026{
Glenn L McGrath237ae422002-11-03 14:05:15 +000027 if (lseek(archive_handle->src_fd, (off_t) amount, SEEK_CUR) == (off_t) -1) {
Glenn L McGrath57033412002-11-08 08:07:38 +000028#ifdef CONFIG_FEATURE_UNARCHIVE_TAPE
Glenn L McGrath237ae422002-11-03 14:05:15 +000029 if (errno == ESPIPE) {
30 seek_by_char(archive_handle, amount);
31 } else
32#endif
33 perror_msg_and_die("Seek failure");
Glenn L McGrath95ebf612001-10-25 14:18:08 +000034 }
Eric Andersen2276d832002-07-11 11:11:56 +000035}