1 (* Memory info 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 let run debug images =
27 (* Print new_utsname structure from bitstring. *)
28 let print_new_utsname name bs =
29 (* Truncate an OCaml string at the first ASCII NUL character, ie. as
30 * if it were a C string.
34 let i = String.index str '\000' in
39 (* Expect the first (sysname) field to always be "Linux", which is
40 * also a good way to tell if we're synchronized to the right bit of
44 | { "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;
45 nodename : 65*8 : string;
46 release : 65*8 : string;
47 version : 65*8 : string;
48 machine : 65*8 : string;
49 domainname : 65*8 : string } ->
50 printf "%s: Linux %s %s %s %s %s\n"
52 (truncate nodename) (truncate release)
53 (truncate version) (truncate machine) (truncate domainname)
55 eprintf (f_"%s: unexpected system_utsname in kernel image\n")
60 fun (_, name, arch, mem, lookup_ksym) ->
61 (* In Linux 2.6.25, the symbol is init_uts_ns.
62 * http://lxr.linux.no/linux/init/version.c
65 let addr = lookup_ksym "init_uts_ns" in
67 let bs = Bitstring.bitstring_of_string (get_bytes mem addr (65*6+4)) in
69 | { _ : 32 : int; (* the kref, atomic_t, always 32 bits *)
70 new_utsname : -1 : bitstring } ->
71 print_new_utsname name new_utsname
73 eprintf (f_"%s: unexpected init_uts_ns in kernel image\n")
77 (* In Linux 2.6.9, the symbol is system_utsname.
78 * http://lxr.linux.no/linux-bk+v2.6.9/include/linux/utsname.h#L24
81 let addr = lookup_ksym "system_utsname" in
84 Bitstring.bitstring_of_string (get_bytes mem addr (65*6)) in
85 print_new_utsname name bs
88 eprintf (f_"%s: could not find utsname in kernel image\n") name
91 let summary = s_"uname command for virtual machines"
92 let description = s_"\
93 virt-uname prints the uname information such as OS version,
94 architecture and node name for virtual machines running under
97 let () = Virt_mem.register "uname" summary description ~run