SysPaths.py revision 2931
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(system.dir, '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