crash-python/crash/commands/mod.py at 876d202bc2a749808e8f60ae00bb89a3a5ddb7a7 · crash-python/crash-python

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#!/usr/bin/env python

# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79:

import gdb

import argparse

from crash.commands import CrashCommand

from crash.types.task import LinuxTask

from crash.types.list import list_for_each_entry

import os

import os.path

import fnmatch

class MODCommand(CrashCommand):

"""display modules information

"""

def __init__(self):

parser = argparse.ArgumentParser(prog="mod")

group = parser.add_mutually_exclusive_group()

parser.add_argument('-S', help='directory with debuginfo')

parser.add_argument('args', nargs=argparse.REMAINDER)

parser.format_usage = lambda : \

"mod [-S path]\n"

CrashCommand.__init__(self, "mod", parser)

def execute(self, argv):

if not argv.S:

gdb.write("Give me -S path/to/debuginfo\n")

return

mods = {}

for root, dirnames, filenames in os.walk(argv.S):

for filename in fnmatch.filter(filenames, '*.ko.debug'):

modname = os.path.basename(filename)[:-9] # strip that .ko.debug

mods [modname] = os.path.join(root, filename)

modules = gdb.lookup_symbol("modules", None)[0].value()

t_module = gdb.lookup_type("struct module")

for mod in list_for_each_entry(modules, t_module, 'list'):

modname = mod["name"].string()

module_core = long(mod["module_core"])

if not mods.has_key(modname):

gdb.write("Debuginfo for %s not found (to be loaded at %lx)!\n" % (modname, module_core))

else:

gdb.execute("add-symbol-file %s 0x%lx" % (mods[modname], module_core))

MODCommand()