mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-21 22:53:37 +00:00
72cfaff5c5
Automated using this command: perl -pi.bak -e 's/(20[012][0-9])-20[12][01234]/$1-2025/g' `git ls-files`
111 lines
3.6 KiB
OCaml
111 lines
3.6 KiB
OCaml
(* guestfs-inspection
|
|
* Copyright (C) 2009-2025 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.
|
|
*)
|
|
|
|
open Scanf
|
|
open Printf
|
|
|
|
open Std_utils
|
|
|
|
open Utils
|
|
|
|
include Structs
|
|
|
|
(* This is almost equivalent to print_partition_table in the C code. The
|
|
* difference is that here we enforce the "BYT;" header internally.
|
|
*)
|
|
let print_partition_table_machine_readable device =
|
|
udev_settle ();
|
|
|
|
let args = ref [] in
|
|
List.push_back args "-m";
|
|
List.push_back args "-s";
|
|
List.push_back args "--";
|
|
List.push_back args device;
|
|
List.push_back args "unit";
|
|
List.push_back args "b";
|
|
List.push_back args "print";
|
|
|
|
let out =
|
|
try command "parted" !args
|
|
with
|
|
(* Translate "unrecognised disk label" into an errno code. *)
|
|
Failure str when String.find str "unrecognised disk label" >= 0 ->
|
|
raise (Unix.Unix_error (Unix.EINVAL, "parted", device ^ ": " ^ str)) in
|
|
|
|
udev_settle ();
|
|
|
|
(* Split the output into lines. *)
|
|
let out = String.trim out in
|
|
let lines = String.nsplit "\n" out in
|
|
|
|
(* lines[0] is "BYT;", lines[1] is the device line,
|
|
* lines[2..] are the partitions themselves.
|
|
*)
|
|
match lines with
|
|
| "BYT;" :: device_line :: lines -> device_line, lines
|
|
| [] | [_] ->
|
|
failwith "too few rows of output from 'parted print' command"
|
|
| _ ->
|
|
failwith "did not see 'BYT;' magic value in 'parted print' command"
|
|
|
|
let part_list device =
|
|
let _, lines = print_partition_table_machine_readable device in
|
|
|
|
List.map (
|
|
fun line ->
|
|
try sscanf line "%d:%LdB:%LdB:%LdB"
|
|
(fun num start end_ size ->
|
|
{ part_num = Int32.of_int num;
|
|
part_start = start; part_end = end_; part_size = size })
|
|
with Scan_failure err ->
|
|
failwithf "could not parse row from output of 'parted print' command: %s: %s"
|
|
line err
|
|
) lines
|
|
|
|
let part_get_parttype device =
|
|
let device_line, _ = print_partition_table_machine_readable device in
|
|
|
|
(* device_line is something like:
|
|
* "/dev/sda:1953525168s:scsi:512:512:msdos:ATA Hitachi HDT72101;"
|
|
*)
|
|
let fields = String.nsplit ":" device_line in
|
|
match fields with
|
|
| _::_::_::_::_::"loop"::_ -> (* If "loop" return an error (RHBZ#634246). *)
|
|
(* ... Unless parted failed to recognize the fake MBR that mkfs.fat from
|
|
* dosfstools-4.2+ created. In that case, return "msdos" for MBR
|
|
* (RHBZ#1931821).
|
|
*)
|
|
if Utils.has_bogus_mbr device then "msdos"
|
|
else failwithf "%s: not a partitioned device" device
|
|
| _::_::_::_::_::ret::_ -> ret
|
|
| _ ->
|
|
failwithf "%s: cannot parse the output of parted" device
|
|
|
|
let part_get_mbr_part_type device partnum =
|
|
let parttype = part_get_parttype device in
|
|
let mbr_id = Sfdisk.part_get_mbr_id device partnum in
|
|
|
|
(* 0x05 - extended partition.
|
|
* 0x0f - extended partition using BIOS INT 13h extensions.
|
|
*)
|
|
match parttype, partnum, mbr_id with
|
|
| "msdos", (1|2|3|4), (0x05|0x0f) -> "extended"
|
|
| "msdos", (1|2|3|4), _ -> "primary"
|
|
| "msdos", _, _ -> "logical"
|
|
| _, _, _ -> "primary"
|