81 lines
2.9 KiB
Python
81 lines
2.9 KiB
Python
# Copyright (c) 2006 The Regents of The University of Michigan
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Ali Saidi
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import os, sys
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from os.path import join as joinpath
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from os import environ as env
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config_path = os.path.dirname(os.path.abspath(__file__))
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config_root = os.path.dirname(config_path)
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def searchpath(path, filename):
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for p in path:
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f = joinpath(p, filename)
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if os.path.exists(f):
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return f
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raise IOError, "Can't find file '%s' on path." % filename
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def disk(filename):
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system()
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return searchpath(disk.path, filename)
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def binary(filename):
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system()
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return searchpath(binary.path, filename)
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def script(filename):
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system()
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return searchpath(script.path, filename)
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def system():
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if not system.path:
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try:
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path = env['M5_PATH'].split(':')
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except KeyError:
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path = [ '/dist/m5/system', '/n/poolfs/z/dist/m5/system' ]
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# expand '~' and '~user' in paths
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path = map(os.path.expanduser, path)
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# filter out non-existent directories
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system.path = filter(os.path.isdir, path)
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if not system.path:
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raise IOError, "Can't find a path to system files."
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if not binary.path:
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binary.path = [joinpath(p, 'binaries') for p in system.path]
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if not disk.path:
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disk.path = [joinpath(p, 'disks') for p in system.path]
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if not script.path:
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script.path = [joinpath(config_root, 'boot')]
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system.path = None
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binary.path = None
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disk.path = None
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script.path = None
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