147 lines
3.0 KiB
Python
Executable File
147 lines
3.0 KiB
Python
Executable File
#!/usr/bin/python2
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#
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# check-kabi - Red Hat kABI reference checking tool
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#
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# We use this script to check against reference Module.kabi files.
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#
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# Author: Jon Masters <jcm@redhat.com>
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# Copyright (C) 2007-2009 Red Hat, Inc.
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#
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# This software may be freely redistributed under the terms of the GNU
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# General Public License (GPL).
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# Changelog:
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#
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# 2009/08/15 - Updated for use in RHEL6.
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# 2007/06/13 - Initial rewrite in python by Jon Masters.
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__author__ = "Jon Masters <jcm@redhat.com>"
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__version__ = "2.0"
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__date__ = "2009/08/15"
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__copyright__ = "Copyright (C) 2007-2009 Red Hat, Inc"
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__license__ = "GPL"
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import getopt
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import os
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import re
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import string
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import sys
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true = 1
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false = 0
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def load_symvers(symvers,filename):
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"""Load a Module.symvers file."""
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symvers_file = open(filename,"r")
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while true:
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in_line = symvers_file.readline()
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if in_line == "":
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break
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if in_line == "\n":
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continue
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checksum,symbol,directory,type = string.split(in_line)
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symvers[symbol] = in_line[0:-1]
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def load_kabi(kabi,filename):
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"""Load a Module.kabi file."""
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kabi_file = open(filename,"r")
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while true:
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in_line = kabi_file.readline()
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if in_line == "":
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break
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if in_line == "\n":
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continue
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checksum,symbol,directory,type = string.split(in_line)
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kabi[symbol] = in_line[0:-1]
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def check_kabi(symvers,kabi):
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"""Check Module.kabi and Module.symvers files."""
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fail=0
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warn=0
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changed_symbols=[]
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moved_symbols=[]
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for symbol in kabi:
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abi_hash,abi_sym,abi_dir,abi_type = string.split(kabi[symbol])
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if symvers.has_key(symbol):
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sym_hash,sym_sym,sym_dir,sym_type = string.split(symvers[symbol])
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if abi_hash != sym_hash:
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fail=1
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changed_symbols.append(symbol)
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if abi_dir != sym_dir:
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warn=1
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moved_symbols.append(symbol)
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else:
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fail=1
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changed_symbols.append(symbol)
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if fail:
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print "*** ERROR - ABI BREAKAGE WAS DETECTED ***"
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print ""
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print "The following symbols have been changed (this will cause an ABI breakage):"
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print ""
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for symbol in changed_symbols:
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print symbol
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print ""
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if warn:
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print "*** WARNING - ABI SYMBOLS MOVED ***"
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print ""
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print "The following symbols moved (typically caused by moving a symbol from being"
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print "provided by the kernel vmlinux out to a loadable module):"
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print ""
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for symbol in moved_symbols:
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print symbol
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print ""
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"""Halt the build, if we got errors and/or warnings. In either case,
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double-checkig is required to avoid introducing / concealing
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KABI inconsistencies."""
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if fail or warn:
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sys.exit(1)
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sys.exit(0)
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def usage():
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print """
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check-kabi: check Module.kabi and Module.symvers files.
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check-kabi [ -k Module.kabi ] [ -s Module.symvers ]
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"""
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if __name__ == "__main__":
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symvers_file = ""
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kabi_file = ""
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opts, args = getopt.getopt(sys.argv[1:], 'hk:s:')
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for o, v in opts:
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if o == "-s":
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symvers_file = v
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if o == "-h":
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usage()
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sys.exit(0)
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if o == "-k":
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kabi_file = v
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if (symvers_file == "") or (kabi_file == ""):
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usage()
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sys.exit(1)
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symvers={}
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kabi={}
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load_symvers(symvers,symvers_file)
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load_kabi(kabi,kabi_file)
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check_kabi(symvers,kabi)
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