1 (* Memory info command for virtual domains.
2 (C) Copyright 2008 Richard W.M. Jones, Red Hat Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 open Virt_mem_gettext.Gettext
26 open Kernel_task_struct
28 let find_tasks debug image ksymmap kernel_version =
29 if not (task_struct_known kernel_version) then (
30 eprintf (f_"%s: %s: unknown kernel version
31 Try a newer version of virt-mem, or if the guest is not from a
32 supported Linux distribution, see this page about adding support:
33 http://et.redhat.com/~rjones/virt-mem/faq.html\n")
34 image.domname kernel_version;
37 let task_struct_size = task_struct_size kernel_version in
40 try Some (Ksymmap.find "init_task" ksymmap)
42 eprintf (f_"%s: could not find init_task in kernel image\n")
45 match init_task_addr with
47 | Some init_task_addr ->
49 get_task_struct kernel_version image.mem init_task_addr in
51 (* Starting at init_task, navigate through the linked list of
52 * tasks (through tasks.next). Just make sure they are mapped
56 let rec loop image task =
57 let next = task.task_struct_tasks'next in
58 if next <> init_task_addr then (
60 Virt_mem_mmap.is_mapped_range image.mem next task_struct_size in
63 Virt_mem_types.load_memory image next task_struct_size
66 let task = get_task_struct kernel_version image.mem next in
71 loop image init_task in
73 image, Some init_task_addr