mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
atcuno
101 lines
3.3 KiB
Python
101 lines
3.3 KiB
Python
# Volatility
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at
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# your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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@author: Andrew Case
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@license: GNU General Public License 2.0 or later
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@contact: atcuno@gmail.com
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@organization:
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"""
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import volatility.obj as obj
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import volatility.plugins.linux.flags as linux_flags
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import volatility.plugins.linux.common as linux_common
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import volatility.plugins.linux.pslist as linux_pslist
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PIDTYPE_PID = 0
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# the < 2.6.24 processing is based on crash from redhat
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class linux_pidhashtable(linux_pslist.linux_pslist):
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"""Enumerates processes through the PID hash table"""
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def walk_tasks_for_pid(self, pid):
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if pid.obj_offset in self.seen_pids:
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return
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self.seen_pids[pid.obj_offset] = 1
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task_pid_off = self.profile.get_obj_offset("task_struct", "pids")
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pids_node_off = self.profile.get_obj_offset("pid_link", "node")
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total_off = task_pid_off + pids_node_off
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for i in [PIDTYPE_PID]:
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task_ent = obj.Object("hlist_node", offset=pid.tasks[i].first, vm=self.addr_space)
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while task_ent.v():
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task = obj.Object("task_struct", offset= task_ent.obj_offset - total_off, vm=self.addr_space)
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yield task
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task_ent = task_ent.next
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def calculate_2_6_24(self):
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self.seen_pids = {}
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pidhash_shift = obj.Object("unsigned int", offset=self.get_profile_symbol("pidhash_shift"), vm=self.addr_space)
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pidhash_size = 1 << pidhash_shift
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pidhash_addr = self.get_profile_symbol("pid_hash")
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pidhash_ptr = obj.Object("Pointer", offset = pidhash_addr, vm=self.addr_space)
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# pidhash is an array of hlist_heads
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pidhash = obj.Object(theType = 'Array', offset = pidhash_ptr, vm = self.addr_space, targetType = 'hlist_head', count = pidhash_size)
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for hlist in pidhash:
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# each entry in the hlist is a upid which is wrapped in a pid
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ent = hlist.first
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while ent:
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upid = linux_common.get_obj(self, ent.obj_offset, "upid", "pid_chain")
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while upid:
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pid = linux_common.get_obj(self, upid.obj_offset, "pid", "numbers")
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for task in self.walk_tasks_for_pid(pid):
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yield task
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if not upid.pid_chain.next:
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break
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upid = linux_common.get_obj(self, upid.pid_chain.next, "upid", "pid_chain")
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ent = ent.next
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def calculate(self):
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for task in self.calculate_2_6_24():
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yield task
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