busybox/archival/libunarchive/seek_by_jump.c
Rob Landley dfba741457 Robert P. Day removed 8 gazillion occurrences of "extern" on function
definitions.  (That should only be on prototypes.)
2006-03-06 20:47:33 +00:00

36 lines
1.2 KiB
C

/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <sys/types.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include "libbb.h"
#include "unarchive.h"
void seek_by_jump(const archive_handle_t *archive_handle, const unsigned int amount)
{
if (lseek(archive_handle->src_fd, (off_t) amount, SEEK_CUR) == (off_t) -1) {
#ifdef CONFIG_FEATURE_UNARCHIVE_TAPE
if (errno == ESPIPE) {
seek_by_char(archive_handle, amount);
} else
#endif
bb_perror_msg_and_die("Seek failure");
}
}