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/* Standard device global variables
Copyright (C) 1995 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.edu>
This file is part of the GNU Hurd.
The GNU Hurd 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, or (at
your option) any later version.
The GNU Hurd 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <diskfs.h>
/* A mach device port for the device we're using. */
mach_port_t diskfs_device = MACH_PORT_NULL;
/* The mach device name of DISKFS_DEVICE. May be 0 if unknown. */
char *diskfs_device_name = 0;
/* The first valid block of DISKFS_DEVICE, in units of
DISKFS_DEVICE_BLOCK_SIZE. */
off_t diskfs_device_start = 0;
/* The usable size of DISKFS_DEVICE, in units of DISKFS_DEVICE_BLOCK_SIZE. */
off_t diskfs_device_size = 0;
/* The unit of addressing for DISKFS_DEVICE. */
unsigned diskfs_device_block_size = 0;
/* Some handy calculations based on DISKFS_DEVICE_BLOCK_SIZE. */
/* Log base 2 of DEVICE_BLOCK_SIZE, or 0 if it's not a power of two. */
unsigned diskfs_log2_device_block_size = 0;
/* Log base 2 of the number of device blocks in a vm page, or 0 if it's not a
power of two. */
unsigned diskfs_log2_device_blocks_per_page = 0;
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