(* 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_mmap

let usage = s_"NAME
  virt-dmesg - dmesg command for virtual machines

SUMMARY
  virt-dmesg [-options] [domains]

DESCRIPTION
  virt-dmesg prints the kernel messages for virtual machines running
  under libvirt.  The output is similar to the ordinary dmesg command
  run inside the virtual machine."

let verbose, images = Virt_mem.start usage

let () =
  List.iter (
    fun (name, arch, mem, lookup_ksym) ->
      try
	(* I don't know why but this symbol doesn't exist in 2.6.9
	 * even in kallsyms.  Hence this won't work with that kernel.
	 * It's possible we can fall back to memory scanning. XXX
	 *)
	let log_buf = lookup_ksym "log_buf" in
	let log_buf_len = lookup_ksym "log_buf_len" in
	let log_start = lookup_ksym "log_start" in
	let log_end = lookup_ksym "log_end" in
	let con_start = lookup_ksym "con_start" in

	()

      with
	Not_found ->
	  eprintf (f_"%s: could not find kernel log buffer in kernel image\n")
	    name
  ) images