mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
iMHLv2
128 lines
4.0 KiB
Python
128 lines
4.0 KiB
Python
# Volatility
|
|
# Copyright (C) 2007-2013 Volatility Foundation
|
|
#
|
|
# This file is part of Volatility.
|
|
#
|
|
# Volatility is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# Volatility is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with Volatility. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
"""
|
|
@author: Andrew Case
|
|
@license: GNU General Public License 2.0
|
|
@contact: atcuno@gmail.com
|
|
@organization:
|
|
"""
|
|
|
|
import volatility.plugins.linux.common as linux_common
|
|
import volatility.obj as obj
|
|
|
|
class linux_cpuinfo(linux_common.AbstractLinuxIntelCommand):
|
|
"""Prints info about each active processor"""
|
|
|
|
def calculate(self):
|
|
linux_common.set_plugin_members(self)
|
|
|
|
cpus = self.online_cpus()
|
|
|
|
if len(cpus) > 1 and self.get_per_cpu_symbol("cpu_info"):
|
|
func = self.get_info_smp
|
|
|
|
elif self.get_per_cpu_symbol("boot_cpu_data"):
|
|
func = self.get_info_single
|
|
|
|
else:
|
|
raise AttributeError, "Unable to get CPU info for memory capture"
|
|
|
|
return func()
|
|
|
|
def get_info_single(self):
|
|
|
|
cpu = obj.Object("cpuinfo_x86", offset = self.addr_space.profile.get_symbol("boot_cpu_data"), vm = self.addr_space)
|
|
|
|
yield 0, cpu
|
|
|
|
def get_info_smp(self):
|
|
"""
|
|
pulls the per_cpu cpu info
|
|
will break apart the per_cpu code if a future plugin needs it
|
|
"""
|
|
|
|
for i, cpu in self.walk_per_cpu_var("cpu_info", "cpuinfo_x86"):
|
|
yield i, cpu
|
|
|
|
def get_per_cpu_symbol(self, sym_name, module = "kernel"):
|
|
"""
|
|
In 2.6.3x, Linux changed how the symbols for per_cpu variables were named
|
|
This handles both formats so plugins needing per-cpu vars are cleaner
|
|
"""
|
|
|
|
ret = self.addr_space.profile.get_symbol(sym_name, module = module)
|
|
|
|
if not ret:
|
|
ret = self.addr_space.profile.get_symbol("per_cpu__" + sym_name, module = module)
|
|
|
|
return ret
|
|
|
|
def online_cpus(self):
|
|
""" returns a list of online cpus (the processor numbers) """
|
|
cpu_online_bits_addr = self.addr_space.profile.get_symbol("cpu_online_bits")
|
|
cpu_present_map_addr = self.addr_space.profile.get_symbol("cpu_present_map")
|
|
|
|
#later kernels..
|
|
if cpu_online_bits_addr:
|
|
bmap = obj.Object("unsigned long", offset = cpu_online_bits_addr, vm = self.addr_space)
|
|
|
|
elif cpu_present_map_addr:
|
|
bmap = obj.Object("unsigned long", offset = cpu_present_map_addr, vm = self.addr_space)
|
|
|
|
else:
|
|
raise AttributeError, "Unable to determine number of online CPUs for memory capture"
|
|
|
|
cpus = []
|
|
for i in range(8):
|
|
if bmap & (1 << i):
|
|
cpus.append(i)
|
|
|
|
return cpus
|
|
|
|
def walk_per_cpu_var(self, per_var, var_type):
|
|
|
|
cpus = self.online_cpus()
|
|
|
|
# get the highest numbered cpu
|
|
max_cpu = cpus[-1] + 1
|
|
|
|
offset_var = self.addr_space.profile.get_symbol("__per_cpu_offset")
|
|
per_offsets = obj.Object(theType = 'Array', targetType = 'unsigned long', count = max_cpu, offset = offset_var, vm = self.addr_space)
|
|
|
|
for i in range(max_cpu):
|
|
|
|
offset = per_offsets[i]
|
|
|
|
cpu_var = self.get_per_cpu_symbol(per_var)
|
|
|
|
addr = cpu_var + offset.v()
|
|
var = obj.Object(var_type, offset = addr, vm = self.addr_space)
|
|
|
|
yield i, var
|
|
|
|
def render_text(self, outfd, data):
|
|
|
|
self.table_header(outfd, [("Processor", "12"),
|
|
("Vendor", "16"),
|
|
("Model", "")])
|
|
for i, cpu in data:
|
|
self.table_row(outfd, str(i), cpu.x86_vendor_id, cpu.x86_model_id)
|
|
|