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
30 let find_tasks debug image ksymmap kernel_version =
31 if not (task_struct_known kernel_version) then (
32 eprintf (f_"%s: %s: unknown kernel version
33 Try a newer version of virt-mem, or if the guest is not from a
34 supported Linux distribution, see this page about adding support:
35 http://et.redhat.com/~rjones/virt-mem/faq.html\n")
36 image.domname kernel_version;
39 let size = task_struct_size kernel_version in
42 try Some (Ksymmap.find "init_task" ksymmap)
44 eprintf (f_"%s: could not find init_task in kernel image\n")
47 match init_task_addr with
49 | Some init_task_addr ->
50 let { field_offset = offset } =
51 field_signature_of_task_struct_tasks'next kernel_version in
53 let lh = Virt_mem_list_head.create_base image init_task_addr offset in
54 let image, lh = Virt_mem_list_head.load_all lh size in
57 Virt_mem_list_head.fold lh ([], 0) (
58 fun (tasks, i) addr ->
60 failwith (sprintf (f_"%s: too many tasks") image.domname);
62 let task = get_task_struct kernel_version image.mem addr in
63 let tasks = task :: tasks in
67 (* Convert to the internal format. *)
68 let tasks = List.rev_map (
70 { task_state = task.task_struct_state;
71 task_prio = task.task_struct_prio;
72 task_normal_prio = task.task_struct_normal_prio;
73 task_static_prio = task.task_struct_static_prio;
74 task_comm = truncate_c_string task.task_struct_comm;
75 task_pid = task.task_struct_pid }