(* Memory info for virtual domains. (C) Copyright 2008 Richard W.M. Jones, Red Hat Inc. http://libvirt.org/ This program 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. This program 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 this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *) open Printf open Virt_mem_gettext.Gettext open Virt_mem_utils open Virt_mem_types open Kernel_task_struct let run debug (image, ksymmap, utsname) = try let { domname = domname } = image in let kernel_version = match utsname with | None -> eprintf (f_"%s: could not guess kernel version\n") domname; raise Exit | Some { kernel_release = v } -> v in if not (task_struct_known kernel_version) then ( eprintf (f_"%s: %s: unknown kernel version Try a newer version of virt-mem, or if the guest is not from a supported Linux distribution, see this page about adding support: http://et.redhat.com/~rjones/virt-mem/faq.html\n") domname kernel_version; raise Exit ); let task_struct_size = task_struct_size kernel_version in let init_task, init_task_addr = let init_task_addr = try Ksymmap.find "init_task" ksymmap with Not_found -> eprintf (f_"%s: could not find init_task in kernel image\n") domname; raise Exit in let init_task = get_task_struct kernel_version image.mem init_task_addr in init_task, init_task_addr in (* Starting at init_task, navigate through the linked list of * tasks (through tasks.next). Grab each task_struct as we go. *) let tasks, image = let rec loop image acc task = let next = task.task_struct_tasks'next in if next <> init_task_addr then ( let mapped = Virt_mem_mmap.is_mapped_range image.mem next task_struct_size in let image = if not mapped then load_memory image next task_struct_size else image in let task = get_task_struct kernel_version image.mem next in let task = { task with task_struct_comm = truncate_c_string task.task_struct_comm } in let acc = task :: acc in loop image acc task ) else acc, image in loop image [] init_task in (* Sort tasks by PID. *) let cmp { task_struct_pid = p1 } { task_struct_pid = p2 } = compare p1 p2 in let tasks = List.sort cmp tasks in printf " PID STAT COMMAND\n"; List.iter ( fun task -> printf "%5Ld %s\n" task.task_struct_pid task.task_struct_comm ) tasks with Exit -> () let summary = s_"list processes in virtual machine" let description = s_"\ virt-ps prints a process listing for virtual machines running under libvirt." let () = Virt_mem.register "ps" summary description ~run