Current Path : /sys/geom/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/geom/geom_mbr_enc.c |
/*- * Copyright (c) 2003 Poul-Henning Kamp * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Functions to encode or decode struct dos_partition into a bytestream * of correct endianess and packing. These functions do no validation * or sanity checking, they only pack/unpack the fields correctly. * * NB! This file must be usable both in kernel and userland. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/geom/geom_mbr_enc.c 139778 2005-01-06 18:27:30Z imp $"); #include <sys/types.h> #include <sys/diskmbr.h> #include <sys/endian.h> void dos_partition_dec(void const *pp, struct dos_partition *d) { unsigned char const *p = pp; d->dp_flag = p[0]; d->dp_shd = p[1]; d->dp_ssect = p[2]; d->dp_scyl = p[3]; d->dp_typ = p[4]; d->dp_ehd = p[5]; d->dp_esect = p[6]; d->dp_ecyl = p[7]; d->dp_start = le32dec(p + 8); d->dp_size = le32dec(p + 12); } void dos_partition_enc(void *pp, struct dos_partition *d) { unsigned char *p = pp; p[0] = d->dp_flag; p[1] = d->dp_shd; p[2] = d->dp_ssect; p[3] = d->dp_scyl; p[4] = d->dp_typ; p[5] = d->dp_ehd; p[6] = d->dp_esect; p[7] = d->dp_ecyl; le32enc(p + 8, d->dp_start); le32enc(p + 12, d->dp_size); }