mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
127 lines
4.2 KiB
OCaml
127 lines
4.2 KiB
OCaml
(* virt-v2v
|
|
* Copyright (C) 2009-2016 Red Hat Inc.
|
|
*
|
|
* 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.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*)
|
|
|
|
(* Utilities used in virt-v2v only. *)
|
|
|
|
open Printf
|
|
|
|
open Common_gettext.Gettext
|
|
open Common_utils
|
|
|
|
let quote = Filename.quote
|
|
|
|
(* Parse an xpath expression and return a string/int. Returns
|
|
* [Some v], or [None] if the expression doesn't match.
|
|
*)
|
|
let xpath_eval parsefn xpathctx expr =
|
|
let obj = Xml.xpath_eval_expression xpathctx expr in
|
|
if Xml.xpathobj_nr_nodes obj < 1 then None
|
|
else (
|
|
let node = Xml.xpathobj_node obj 0 in
|
|
let str = Xml.node_as_string node in
|
|
try Some (parsefn str)
|
|
with Failure "int_of_string" ->
|
|
error (f_"expecting XML expression to return an integer (expression: %s, matching string: %s)")
|
|
expr str
|
|
)
|
|
|
|
external identity : 'a -> 'a = "%identity"
|
|
|
|
let xpath_string = xpath_eval identity
|
|
let xpath_int = xpath_eval int_of_string
|
|
let xpath_int64 = xpath_eval Int64.of_string
|
|
|
|
(* Parse an xpath expression and return a string/int; if the expression
|
|
* doesn't match, return the default.
|
|
*)
|
|
let xpath_eval_default parsefn xpath expr default =
|
|
match xpath_eval parsefn xpath expr with
|
|
| None -> default
|
|
| Some s -> s
|
|
|
|
let xpath_string_default = xpath_eval_default identity
|
|
let xpath_int_default = xpath_eval_default int_of_string
|
|
let xpath_int64_default = xpath_eval_default Int64.of_string
|
|
|
|
external drive_name : int -> string = "v2v_utils_drive_name"
|
|
external drive_index : string -> int = "v2v_utils_drive_index"
|
|
|
|
(* Map guest architecture found by inspection to the architecture
|
|
* that KVM must emulate. Note for x86 we assume a 64 bit hypervisor.
|
|
*)
|
|
let kvm_arch = function
|
|
| "i386" | "i486" | "i586" | "i686"
|
|
| "x86_64" -> "x86_64"
|
|
| "unknown" -> "x86_64" (* most likely *)
|
|
| arch -> arch
|
|
|
|
(* Does qemu support the given sound card? *)
|
|
let qemu_supports_sound_card = function
|
|
| Types.AC97
|
|
| Types.ES1370
|
|
| Types.ICH6
|
|
| Types.ICH9
|
|
| Types.PCSpeaker
|
|
| Types.SB16
|
|
| Types.USBAudio
|
|
-> true
|
|
|
|
external ovmf_i386_firmware : unit -> (string * string) list = "v2v_utils_ovmf_i386_firmware"
|
|
external ovmf_x86_64_firmware : unit -> (string * string) list = "v2v_utils_ovmf_x86_64_firmware"
|
|
external aavmf_firmware : unit -> (string * string) list = "v2v_utils_aavmf_firmware"
|
|
|
|
(* Find the UEFI firmware. *)
|
|
let find_uefi_firmware guest_arch =
|
|
let files =
|
|
(* The lists of firmware are actually defined in src/utils.c. *)
|
|
match guest_arch with
|
|
| "i386" | "i486" | "i586" | "i686" -> ovmf_i386_firmware ()
|
|
| "x86_64" -> ovmf_x86_64_firmware ()
|
|
| "aarch64" -> aavmf_firmware ()
|
|
| arch ->
|
|
error (f_"don't know how to convert UEFI guests for architecture %s")
|
|
guest_arch in
|
|
let rec loop = function
|
|
| [] ->
|
|
error (f_"cannot find firmware for UEFI guests.\n\nYou probably need to install OVMF, or Gerd's firmware repo (https://www.kraxel.org/repos/), or AAVMF (if using aarch64)")
|
|
| ((code, vars_template) as ret) :: rest ->
|
|
if Sys.file_exists code && Sys.file_exists vars_template then ret
|
|
else loop rest
|
|
in
|
|
loop files
|
|
|
|
let compare_app2_versions app1 app2 =
|
|
let i = compare app1.Guestfs.app2_epoch app2.Guestfs.app2_epoch in
|
|
if i <> 0 then i
|
|
else (
|
|
let i =
|
|
compare_version app1.Guestfs.app2_version app2.Guestfs.app2_version in
|
|
if i <> 0 then i
|
|
else
|
|
compare_version app1.Guestfs.app2_release app2.Guestfs.app2_release
|
|
)
|
|
|
|
let remove_duplicates xs =
|
|
let h = Hashtbl.create (List.length xs) in
|
|
let rec loop = function
|
|
| [] -> []
|
|
| x :: xs when Hashtbl.mem h x -> xs
|
|
| x :: xs -> Hashtbl.add h x true; x :: loop xs
|
|
in
|
|
loop xs
|