SysPaths.py revision 3223:a2b6fa575c05 
1# Copyright (c) 2006 The Regents of The University of Michigan
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright
9# notice, this list of conditions and the following disclaimer in the
10# documentation and/or other materials provided with the distribution;
11# neither the name of the copyright holders nor the names of its
12# contributors may be used to endorse or promote products derived from
13# this software without specific prior written permission.
14#
15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26#
27# Authors: Ali Saidi
28
29import os, sys
30from os.path import isdir, join as joinpath
31from os import environ as env
32
33def disk(file):
34    system()
35    return joinpath(disk.dir, file)
36
37def binary(file):
38    system()
39    return joinpath(binary.dir, file)
40
41def script(file):
42    system()
43    return joinpath(script.dir, file)
44
45def system():
46    if not system.dir:
47        try:
48                path = env['M5_PATH'].split(':')
49        except KeyError:
50                path = [ '/dist/m5/system', '/n/poolfs/z/dist/m5/system' ]
51
52        for system.dir in path:
53            if os.path.isdir(system.dir):
54                break
55        else:
56            raise ImportError, "Can't find a path to system files."
57
58    if not binary.dir:
59        binary.dir = joinpath(system.dir, 'binaries')
60    if not disk.dir:
61        disk.dir = joinpath('/n/zamp/z/ktlim/local/clean/linux', 'disks')
62    if not script.dir:
63        script.dir = joinpath(system.dir, 'boot')
64
65system.dir = None
66binary.dir = None
67disk.dir = None
68script.dir = None
69