1113389Sphk/*- 2113389Sphk * Copyright (c) 2003 Poul-Henning Kamp 3113389Sphk * All rights reserved. 4113389Sphk * 5113389Sphk * Redistribution and use in source and binary forms, with or without 6113389Sphk * modification, are permitted provided that the following conditions 7113389Sphk * are met: 8113389Sphk * 1. Redistributions of source code must retain the above copyright 9113389Sphk * notice, this list of conditions and the following disclaimer. 10113389Sphk * 2. Redistributions in binary form must reproduce the above copyright 11113389Sphk * notice, this list of conditions and the following disclaimer in the 12113389Sphk * documentation and/or other materials provided with the distribution. 13113389Sphk * 14113389Sphk * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15113389Sphk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16113389Sphk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17113389Sphk * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18113389Sphk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19113389Sphk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20113389Sphk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21113389Sphk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22113389Sphk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23113389Sphk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24113389Sphk * SUCH DAMAGE. 25139778Simp */ 26139778Simp 27139778Simp/* Functions to encode or decode struct dos_partition into a bytestream 28113389Sphk * of correct endianess and packing. These functions do no validation 29113389Sphk * or sanity checking, they only pack/unpack the fields correctly. 30113389Sphk * 31113389Sphk * NB! This file must be usable both in kernel and userland. 32113389Sphk */ 33113389Sphk 34116196Sobrien#include <sys/cdefs.h> 35116196Sobrien__FBSDID("$FreeBSD$"); 36116196Sobrien 37113389Sphk#include <sys/types.h> 38113389Sphk#include <sys/diskmbr.h> 39113389Sphk#include <sys/endian.h> 40113389Sphk 41113389Sphkvoid 42113389Sphkdos_partition_dec(void const *pp, struct dos_partition *d) 43113389Sphk{ 44113389Sphk unsigned char const *p = pp; 45113389Sphk 46113389Sphk d->dp_flag = p[0]; 47113389Sphk d->dp_shd = p[1]; 48113389Sphk d->dp_ssect = p[2]; 49113389Sphk d->dp_scyl = p[3]; 50113389Sphk d->dp_typ = p[4]; 51113389Sphk d->dp_ehd = p[5]; 52113389Sphk d->dp_esect = p[6]; 53113389Sphk d->dp_ecyl = p[7]; 54113389Sphk d->dp_start = le32dec(p + 8); 55113389Sphk d->dp_size = le32dec(p + 12); 56113389Sphk} 57113389Sphk 58113389Sphkvoid 59113389Sphkdos_partition_enc(void *pp, struct dos_partition *d) 60113389Sphk{ 61113389Sphk unsigned char *p = pp; 62113389Sphk 63113389Sphk p[0] = d->dp_flag; 64113389Sphk p[1] = d->dp_shd; 65113389Sphk p[2] = d->dp_ssect; 66113389Sphk p[3] = d->dp_scyl; 67113389Sphk p[4] = d->dp_typ; 68113389Sphk p[5] = d->dp_ehd; 69113389Sphk p[6] = d->dp_esect; 70113389Sphk p[7] = d->dp_ecyl; 71113389Sphk le32enc(p + 8, d->dp_start); 72113389Sphk le32enc(p + 12, d->dp_size); 73113389Sphk} 74