kabitool

   1 #!/usr/bin/python
   2 #
   3 # kabitool - Red Hat kABI extraction tool (version 2)
   4 #
   5 # We use this script to generate RPM dependencies based on symversions.
   6 #
   7 # Author: Jon Masters <jcm@redhat.com>
   8 # Copyright (C) 2009 Red Hat, Inc.
   9 #
  10 # This software may be freely redistributed under the terms of the GNU
  11 # General Public License (GPL).
  12
  13 # Changelog:
  14 #
  15 # 2009/08/01 - New version based on kABI dep plan for RHEL6.
  16 #
  17
  18 __author__ = "Jon Masters <jcm@redhat.com>"
  19 __version__ = "$Revisions: 2.0 $"
  20 __date__ = "$Date: 2009/08/01 18:21:15 $"
  21 __copyright__ = "Copyright (C) 2009 Red Hat, Inc"
  22 __license__ = "GPL"
  23
  24 import getopt
  25 import os
  26 import re
  27 import sha
  28 import string
  29 import sys
  30
  31 true = 1
  32 false = 0
  33
  34 def load_symbols(filename):
  35         """Load the kernel exported symbols from Module.symvers."""
  36
  37         ksyms = open(filename,"r")
  38
  39         symbols={}
  40
  41         while true:
  42                 line = ksyms.readline()
  43                 if line == "":
  44                         break;
  45                 if line == "\n":
  46                         continue
  47                 checksum,symbol,path,license = string.split(line)
  48
  49                 symbols[symbol] = dict(checksum=checksum,
  50                                        path=path,
  51                                        license=license)
  52
  53         return symbols
  54
  55 def output_deps(depsfile,symbols):
  56
  57         deps_file = open(depsfile,"w")
  58
  59         for symbol in sorted(symbols.keys()):
  60                 deps_file.write("kernel("+symbol+") = " +
  61                                 symbols[symbol]['checksum'] + "\n")
  62
  63 def usage():
  64         print """
  65 kabitool: process Module.symvers into useful exported kABI dependencies
  66
  67         kabitool [-k kernel] [-s symbols ]
  68
  69         -o              The file to output sorted dependencies to
  70
  71         -s              The Module.symvers file to import from
  72
  73 """
  74
  75 if __name__ == "__main__":
  76
  77         symdeps_file = ""
  78         symvers_file = ""
  79
  80         opts, args = getopt.getopt(sys.argv[1:], 'ho:s:')
  81
  82         for o, v in opts:
  83                 if o == "-h":
  84                         usage()
  85                         sys.exit(0)
  86                 if o == "-o":
  87                         symdeps_file = v
  88                 if o == "-s":
  89                         symvers_file = v
  90
  91         if (symdeps_file == ""):
  92                 symdeps_file = "Module.symdeps"
  93
  94         if (symvers_file == ""):
  95                 symvers_file = "Module.symvers"
  96
  97         if not (os.path.isfile(symvers_file)):
  98                 print "cannot read Module.symvers file"
  99                 usage()
 100                 exit(1)
 101
 102         symbols = load_symbols(symvers_file)
 103         output_deps(symdeps_file, symbols)