busybox/archival/libunarchive/data_align.c

35 lines
1.1 KiB
C

/* vi: set sw=4 ts=4: */
/*
* 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 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 "libbb.h"
#include "unarchive.h"
void data_align(archive_handle_t *archive_handle, const unsigned short boundary)
{
const unsigned short skip_amount = (boundary - (archive_handle->offset % boundary)) % boundary;
archive_handle->seek(archive_handle, skip_amount);
archive_handle->offset += skip_amount;
return;
}