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
27 (* Truncate an OCaml string at the first ASCII NUL character, ie. as
28 * if it were a C string.
32 let i = String.index str '\000' in
37 let parse_utsname bits =
38 (* Expect the first (sysname) field to always be "Linux", which is
39 * also a good way to tell if we're synchronized to the right bit of
43 | { "Linux\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" : 65*8 : string;
44 nodename : 65*8 : string;
45 release : 65*8 : string;
46 version : 65*8 : string;
47 machine : 65*8 : string;
48 domainname : 65*8 : string } ->
50 kernel_name = "Linux";
51 nodename = truncate nodename;
52 kernel_release = truncate release;
53 kernel_version = truncate version;
54 machine = truncate machine;
55 domainname = truncate domainname
60 let find_utsname debug (domid, name, arch, mem, lookup_ksym) =
62 (* In Linux 2.6.25, the symbol is init_uts_ns.
63 * http://lxr.linux.no/linux/init/version.c
66 let addr = lookup_ksym "init_uts_ns" in
68 let bs = Bitstring.bitstring_of_string (get_bytes mem addr (65*6+4)) in
70 | { _ : 32 : int; (* the kref, atomic_t, always 32 bits *)
71 new_utsname : -1 : bitstring } ->
72 parse_utsname new_utsname
75 eprintf (f_"%s: unexpected init_uts_ns in kernel image\n") name;
80 (* In Linux 2.6.9, the symbol is system_utsname.
81 * http://lxr.linux.no/linux-bk+v2.6.9/include/linux/utsname.h#L24
84 let addr = lookup_ksym "system_utsname" in
87 Bitstring.bitstring_of_string (get_bytes mem addr (65*6)) in
91 eprintf (f_"%s: could not find utsname in kernel image\n") name
93 (domid, name, arch, mem, lookup_ksym, utsname)