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167 lines
4.1 KiB
167 lines
4.1 KiB
#!/usr/bin/python3
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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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# 2018/06/01 - Update for python3 by Petr Oros.
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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 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, *ns = in_line.split()
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ns = ns[0] if ns else None
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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, *ns = in_line.split()
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ns = ns[0] if ns else None
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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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ns_symbols = []
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for symbol in kabi:
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abi_hash, abi_sym, abi_dir, abi_type, *abi_ns = kabi[symbol].split()
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abi_ns = abi_ns[0] if abi_ns else None
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if symbol in symvers:
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sym_hash, sym_sym, sym_dir, sym_type, *sym_ns = symvers[symbol].split()
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sym_ns = sym_ns[0] if sym_ns else None
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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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if abi_ns != sym_ns:
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warn = 1
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ns_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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if moved_symbols:
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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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if ns_symbols:
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print("")
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print("The following symbols changed symbol namespaces:")
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print("")
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for symbol in ns_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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