From 88832f95a8473f326890eb2cf1c700c8f8e0e044 Mon Sep 17 00:00:00 2001 From: Miles Bader Date: Fri, 13 Oct 1995 23:15:42 +0000 Subject: Initial revision --- libdiskfs/dev-globals.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 libdiskfs/dev-globals.c (limited to 'libdiskfs/dev-globals.c') diff --git a/libdiskfs/dev-globals.c b/libdiskfs/dev-globals.c new file mode 100644 index 00000000..c32b6a59 --- /dev/null +++ b/libdiskfs/dev-globals.c @@ -0,0 +1,46 @@ +/* Standard device global variables + + Copyright (C) 1995 Free Software Foundation, Inc. + + Written by Miles Bader + + 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 + +/* 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; -- cgit v1.2.3