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libguestfs/daemon/inspect_fs_unix.ml
Richard W.M. Jones f3dd67affe New API: inspect_get_build_id 
Add an API to return the build ID of the guest.  This to allow a
future change to be able to distinguish between Windows 10 and Windows 11
which can only be done using the build ID.

For Windows we can read the CurrentBuildNumber key from the registry.
For Linux there happens to be a BUILD_ID field in /etc/os-release.
I've never seen a Linux distro that actually uses this.

Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2022-12-02 10:16:57 +00:00

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(* guestfs-inspection
* Copyright (C) 2009-2020 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 Printf
open C_utils
open Std_utils
open Utils
open Inspect_types
open Inspect_utils
let re_fedora = PCRE.compile "Fedora release (\\d+)"
let re_rhel_old = PCRE.compile "Red Hat.*release (\\d+).*Update (\\d+)"
let re_rhel = PCRE.compile "Red Hat.*release (\\d+)\\.(\\d+)"
let re_rhel_no_minor = PCRE.compile "Red Hat.*release (\\d+)"
let re_centos_old = PCRE.compile "CentOS.*release (\\d+).*Update (\\d+)"
let re_centos = PCRE.compile "CentOS.*release (\\d+)\\.(\\d+)"
let re_centos_no_minor = PCRE.compile "CentOS.*release (\\d+)"
let re_rocky = PCRE.compile "Rocky Linux.*release (\\d+)\\.(\\d+)"
let re_rocky_no_minor = PCRE.compile "Rocky Linux.*release (\\d+)"
let re_scientific_linux_old =
PCRE.compile "Scientific Linux.*release (\\d+).*Update (\\d+)"
let re_scientific_linux =
PCRE.compile "Scientific Linux.*release (\\d+)\\.(\\d+)"
let re_scientific_linux_no_minor =
PCRE.compile "Scientific Linux.*release (\\d+)"
let re_oracle_linux_old =
PCRE.compile "Oracle Linux.*release (\\d+).*Update (\\d+)"
let re_oracle_linux =
PCRE.compile "Oracle Linux.*release (\\d+)\\.(\\d+)"
let re_oracle_linux_no_minor = PCRE.compile "Oracle Linux.*release (\\d+)"
let re_netbsd = PCRE.compile "^NetBSD (\\d+)\\.(\\d+)"
let re_opensuse = PCRE.compile "^(openSUSE|SuSE Linux|SUSE LINUX) "
let re_sles = PCRE.compile "^SUSE (Linux|LINUX) Enterprise "
let re_nld = PCRE.compile "^Novell Linux Desktop "
let re_sles_version = PCRE.compile "^VERSION = (\\d+)"
let re_sles_patchlevel = PCRE.compile "^PATCHLEVEL = (\\d+)"
let re_minix = PCRE.compile "^(\\d+)\\.(\\d+)(\\.(\\d+))?"
let re_openbsd = PCRE.compile "^OpenBSD (\\d+|\\?)\\.(\\d+|\\?)"
let re_frugalware = PCRE.compile "Frugalware (\\d+)\\.(\\d+)"
let re_pldlinux = PCRE.compile "(\\d+)\\.(\\d+) PLD Linux"
let re_neokylin_version = PCRE.compile "^V(\\d+)Update(\\d+)$"
let re_openmandriva =
PCRE.compile "OpenMandriva.*release (\\d+)\\.(\\d+)\\.?(\\d+)? .*"
let arch_binaries =
[ "/bin/bash"; "/bin/ls"; "/bin/echo"; "/bin/rm"; "/bin/sh" ]
(* List of typical rolling distros, to ease handling them for common
* features.
*)
let rolling_distros =
[ DISTRO_ARCHLINUX; DISTRO_GENTOO; DISTRO_VOID_LINUX ]
(* Parse a os-release file.
*
* Only few fields are parsed, falling back to the usual detection if we
* cannot read all of them.
*
* For the format of os-release, see also:
* http://www.freedesktop.org/software/systemd/man/os-release.html
*)
let rec parse_os_release release_file data =
let chroot = Chroot.create ~name:"parse_os_release" () in
let lines = Chroot.f chroot read_small_file release_file in
match lines with
| None -> false
| Some lines ->
let values = parse_key_value_strings ~unquote:shell_unquote lines in
List.iter (
fun (key, value) ->
if key = "ID" then (
let distro = distro_of_os_release_id value in
match distro with
| Some _ as distro -> data.distro <- distro
| None -> ()
)
else if key = "PRETTY_NAME" then
data.product_name <- Some value
else if key = "VERSION_ID" then
parse_os_release_version_id value data
else if key = "BUILD_ID" then
data.build_id <- Some value
) values;
(* If we haven't got all the fields, exit right away. *)
if data.distro = None || data.product_name = None then
false
else (
match data with
(* os-release in Debian and CentOS does not provide the full
* version number (VERSION_ID), just the major part of it. If
* we detect that situation then bail out and use the release
* files instead.
*)
| { distro = Some (DISTRO_DEBIAN|DISTRO_CENTOS|DISTRO_ROCKY);
version = Some (_, 0) } ->
false
(* Rolling distros: no VERSION_ID available. *)
| { distro = Some d; version = None } when List.mem d rolling_distros ->
data.version <- Some (0, 0);
true
(* No version detected, so fall back to other ways. *)
| { version = None } ->
false
| _ -> true
)
and parse_os_release_version_id value data =
(* NeoKylin uses a non-standard format in the VERSION_ID
* field (RHBZ#1476081).
*)
if PCRE.matches re_neokylin_version value then (
let major = int_of_string (PCRE.sub 1)
and minor = int_of_string (PCRE.sub 2) in
data.version <- Some (major, minor)
)
else
parse_version_from_major_minor value data
(* ID="fedora" => Some DISTRO_FEDORA *)
and distro_of_os_release_id = function
| "alpine" -> Some DISTRO_ALPINE_LINUX
| "altlinux" -> Some DISTRO_ALTLINUX
| "arch" -> Some DISTRO_ARCHLINUX
| "centos" -> Some DISTRO_CENTOS
| "coreos" -> Some DISTRO_COREOS
| "debian" -> Some DISTRO_DEBIAN
| "fedora" -> Some DISTRO_FEDORA
| "frugalware" -> Some DISTRO_FRUGALWARE
| "gentoo" -> Some DISTRO_GENTOO
| "kali" -> Some DISTRO_KALI_LINUX
| "kylin" -> Some DISTRO_KYLIN
| "mageia" -> Some DISTRO_MAGEIA
| "neokylin" -> Some DISTRO_NEOKYLIN
| "openmandriva" -> Some DISTRO_OPENMANDRIVA
| "opensuse" -> Some DISTRO_OPENSUSE
| s when String.is_prefix s "opensuse-" -> Some DISTRO_OPENSUSE
| "pardus" -> Some DISTRO_PARDUS
| "pld" -> Some DISTRO_PLD_LINUX
| "rhel" -> Some DISTRO_RHEL
| "rocky" -> Some DISTRO_ROCKY
| "sles" | "sled" -> Some DISTRO_SLES
| "ubuntu" -> Some DISTRO_UBUNTU
| "void" -> Some DISTRO_VOID_LINUX
| value ->
eprintf "/etc/os-release: unknown ID=%s\n" value;
None
(* Ubuntu has /etc/lsb-release containing:
* DISTRIB_ID=Ubuntu # Distro
* DISTRIB_RELEASE=10.04 # Version
* DISTRIB_CODENAME=lucid
* DISTRIB_DESCRIPTION="Ubuntu 10.04.1 LTS" # Product name
*
* [Ubuntu-derived ...] Linux Mint was found to have this:
* DISTRIB_ID=LinuxMint
* DISTRIB_RELEASE=10
* DISTRIB_CODENAME=julia
* DISTRIB_DESCRIPTION="Linux Mint 10 Julia"
* Linux Mint also has /etc/linuxmint/info with more information,
* but we can use the LSB file.
*
* Mandriva has:
* LSB_VERSION=lsb-4.0-amd64:lsb-4.0-noarch
* DISTRIB_ID=MandrivaLinux
* DISTRIB_RELEASE=2010.1
* DISTRIB_CODENAME=Henry_Farman
* DISTRIB_DESCRIPTION="Mandriva Linux 2010.1"
* Mandriva also has a normal release file called /etc/mandriva-release.
*
* CoreOS has a /etc/lsb-release link to /usr/share/coreos/lsb-release containing:
* DISTRIB_ID=CoreOS
* DISTRIB_RELEASE=647.0.0
* DISTRIB_CODENAME="Red Dog"
* DISTRIB_DESCRIPTION="CoreOS 647.0.0"
*)
and parse_lsb_release release_file data =
let chroot = Chroot.create ~name:"parse_lsb_release" () in
let lines = Chroot.f chroot read_small_file release_file in
match lines with
| None -> false
| Some lines ->
(* Some distros (eg. RHEL 3) have a bare lsb-release file that might
* just contain the LSB_VERSION field and nothing else. In that case
* we must bail out (return false).
*)
let ok = ref false in
let values = parse_key_value_strings ~unquote:simple_unquote lines in
List.iter (
fun (key, value) ->
if verbose () then
eprintf "parse_lsb_release: parsing: %s=%s\n%!" key value;
if key = "DISTRIB_ID" then (
let distro = distro_of_lsb_release_distrib_id value in
match distro with
| Some _ as distro ->
ok := true;
data.distro <- distro
| None -> ()
)
else if key = "DISTRIB_RELEASE" then
parse_version_from_major_minor value data
else if key = "DISTRIB_DESCRIPTION" then (
ok := true;
data.product_name <- Some value
)
) values;
!ok
(* DISTRIB_ID="Ubuntu" => Some DISTRO_UBUNTU *)
and distro_of_lsb_release_distrib_id = function
| "CoreOS" -> Some DISTRO_COREOS
| "LinuxMint" -> Some DISTRO_LINUX_MINT
| "Mageia" -> Some DISTRO_MAGEIA
| "Ubuntu" -> Some DISTRO_UBUNTU
| value ->
eprintf "lsb-release: unknown DISTRIB_ID=%s\n" value;
None
and parse_suse_release release_file data =
let chroot = Chroot.create ~name:"parse_suse_release" () in
let lines = Chroot.f chroot read_small_file release_file in
match lines with
| None
| Some [] -> false
| Some lines ->
(* First line is dist release name. *)
let product_name = List.hd lines in
data.product_name <- Some product_name;
(* Match SLES first because openSuSE regex overlaps some SLES
* release strings.
*)
if PCRE.matches re_sles product_name ||
PCRE.matches re_nld product_name then (
(* Second line contains version string. *)
let major =
if List.length lines >= 2 then (
let line = List.nth lines 1 in
if PCRE.matches re_sles_version line then
Some (int_of_string (PCRE.sub 1))
else None
)
else None in
(* Third line contains service pack string. *)
let minor =
if List.length lines >= 3 then (
let line = List.nth lines 2 in
if PCRE.matches re_sles_patchlevel line then
Some (int_of_string (PCRE.sub 1))
else None
)
else None in
let version =
match major, minor with
| Some major, Some minor -> Some (major, minor)
| Some major, None -> Some (major, 0)
| None, Some _ | None, None -> None in
data.distro <- Some DISTRO_SLES;
data.version <- version
)
else if PCRE.matches re_opensuse product_name then (
(* Second line contains version string. *)
if List.length lines >= 2 then (
let line = List.nth lines 1 in
parse_version_from_major_minor line data
);
data.distro <- Some DISTRO_OPENSUSE
);
true
(* Parse any generic /etc/x-release file.
*
* The optional regular expression which may match 0, 1 or 2
* substrings, which are used as the major and minor numbers.
*
* The fixed distro is always set, and the product name is
* set to the first line of the release file.
*)
and parse_generic ?rex distro release_file data =
let chroot = Chroot.create ~name:"parse_generic" () in
let product_name =
Chroot.f chroot (
fun file ->
if not (is_small_file file) then (
eprintf "%s: not a regular file or too large\n" file;
""
)
else
read_first_line_from_file file
) release_file in
if product_name = "" then
false
else (
if verbose () then
eprintf "parse_generic: product_name = %s\n%!" product_name;
data.product_name <- Some product_name;
data.distro <- Some distro;
(match rex with
| Some rex ->
(* If ~rex was supplied, then it must match the release file,
* else the parsing fails.
*)
if PCRE.matches rex product_name then (
(* Although it's not documented, matched_group raises
* Invalid_argument if called with an unknown group number.
*)
let major =
try Some (int_of_string (PCRE.sub 1))
with Not_found | Invalid_argument _ | Failure _ -> None in
let minor =
try Some (int_of_string (PCRE.sub 2))
with Not_found | Invalid_argument _ | Failure _ -> None in
(match major, minor with
| None, None -> ()
| None, Some _ -> ()
| Some major, None -> data.version <- Some (major, 0)
| Some major, Some minor -> data.version <- Some (major, minor)
);
true
)
else
false (* ... else the parsing fails. *)
| None ->
(* However if no ~rex was supplied, then we make a best
* effort attempt to parse a version number, but don't
* fail if one cannot be found.
*)
parse_version_from_major_minor product_name data;
true
)
)
(* The list of release file tests that we run for Linux root filesystems.
* This is processed in order.
*
* For each test, first we check if the named release file exists.
* If so, the parse function is called. If not, we go on to the next
* test.
*
* Each parse function should return true or false. If a parse function
* returns true, then we finish, else if it returns false then we continue
* to the next test.
*)
type parse_function = string -> inspection_data -> bool
type tests = (string * parse_function) list
let linux_root_tests : tests = [
(* systemd distros include /etc/os-release which is reasonably
* standardized. This entry should be first.
*)
"/etc/os-release", parse_os_release;
(* LSB is also a reasonable standard. This entry should be second. *)
"/etc/lsb-release", parse_lsb_release;
(* Now we enter the Wild West ... *)
(* OpenMandriva includes a [/etc/redhat-release] symlink, hence their
* checks need to be performed before the Red-Hat one.
*)
"/etc/openmandriva-release", parse_generic ~rex:re_openmandriva
DISTRO_OPENMANDRIVA;
(* RHEL-based distros include a [/etc/redhat-release] file, hence their
* checks need to be performed before the Red-Hat one.
*)
"/etc/oracle-release", parse_generic ~rex:re_oracle_linux_old
DISTRO_ORACLE_LINUX;
"/etc/oracle-release", parse_generic ~rex:re_oracle_linux
DISTRO_ORACLE_LINUX;
"/etc/oracle-release", parse_generic ~rex:re_oracle_linux_no_minor
DISTRO_ORACLE_LINUX;
"/etc/centos-release", parse_generic ~rex:re_centos_old
DISTRO_CENTOS;
"/etc/centos-release", parse_generic ~rex:re_centos
DISTRO_CENTOS;
"/etc/centos-release", parse_generic ~rex:re_centos_no_minor
DISTRO_CENTOS;
"/etc/rocky-release", parse_generic ~rex:re_rocky
DISTRO_ROCKY;
"/etc/rocky-release", parse_generic ~rex:re_rocky_no_minor
DISTRO_ROCKY;
"/etc/altlinux-release", parse_generic DISTRO_ALTLINUX;
"/etc/redhat-release", parse_generic ~rex:re_fedora
DISTRO_FEDORA;
"/etc/redhat-release", parse_generic ~rex:re_rhel_old
DISTRO_RHEL;
"/etc/redhat-release", parse_generic ~rex:re_rhel
DISTRO_RHEL;
"/etc/redhat-release", parse_generic ~rex:re_rhel_no_minor
DISTRO_RHEL;
"/etc/redhat-release", parse_generic ~rex:re_centos_old
DISTRO_CENTOS;
"/etc/redhat-release", parse_generic ~rex:re_centos
DISTRO_CENTOS;
"/etc/redhat-release", parse_generic ~rex:re_centos_no_minor
DISTRO_CENTOS;
"/etc/redhat-release", parse_generic ~rex:re_rocky
DISTRO_ROCKY;
"/etc/redhat-release", parse_generic ~rex:re_rocky_no_minor
DISTRO_ROCKY;
"/etc/redhat-release", parse_generic ~rex:re_scientific_linux_old
DISTRO_SCIENTIFIC_LINUX;
"/etc/redhat-release", parse_generic ~rex:re_scientific_linux
DISTRO_SCIENTIFIC_LINUX;
"/etc/redhat-release", parse_generic ~rex:re_scientific_linux_no_minor
DISTRO_SCIENTIFIC_LINUX;
(* If there's an /etc/redhat-release file, but nothing above
* matches, then it is a generic Red Hat-based distro.
*)
"/etc/redhat-release", parse_generic DISTRO_REDHAT_BASED;
"/etc/redhat-release",
(fun _ data -> data.distro <- Some DISTRO_REDHAT_BASED; true);
"/etc/debian_version", parse_generic DISTRO_DEBIAN;
"/etc/pardus-release", parse_generic DISTRO_PARDUS;
(* /etc/arch-release file is empty and I can't see a way to
* determine the actual release or product string.
*)
"/etc/arch-release",
(fun _ data -> data.distro <- Some DISTRO_ARCHLINUX; true);
"/etc/gentoo-release", parse_generic DISTRO_GENTOO;
"/etc/meego-release", parse_generic DISTRO_MEEGO;
"/etc/slackware-version", parse_generic DISTRO_SLACKWARE;
"/etc/ttylinux-target", parse_generic DISTRO_TTYLINUX;
"/etc/SuSE-release", parse_suse_release;
"/etc/SuSE-release",
(fun _ data -> data.distro <- Some DISTRO_SUSE_BASED; true);
"/etc/cirros/version", parse_generic DISTRO_CIRROS;
"/etc/br-version",
(fun release_file data ->
let distro =
if Is.is_file ~followsymlinks:true "/usr/share/cirros/logo" then
DISTRO_CIRROS
else
DISTRO_BUILDROOT in
(* /etc/br-version has the format YYYY.MM[-git/hg/svn release] *)
parse_generic distro release_file data);
"/etc/alpine-release", parse_generic DISTRO_ALPINE_LINUX;
"/etc/frugalware-release", parse_generic ~rex:re_frugalware
DISTRO_FRUGALWARE;
"/etc/pld-release", parse_generic ~rex:re_pldlinux
DISTRO_PLD_LINUX;
]
let rec check_tests data = function
| (release_file, parse_fun) :: tests ->
if verbose () then
eprintf "check_tests: checking %s\n%!" release_file;
if Is.is_file ~followsymlinks:true release_file then (
if parse_fun release_file data then () (* true => finished *)
else check_tests data tests
) else check_tests data tests
| [] -> ()
let rec check_linux_root mountable data =
let os_type = OS_TYPE_LINUX in
data.os_type <- Some os_type;
check_tests data linux_root_tests;
data.arch <- check_architecture ();
data.fstab <-
Inspect_fs_unix_fstab.check_fstab ~mdadm_conf:true mountable os_type;
data.hostname <- check_hostname_linux ()
and check_architecture () =
let rec loop = function
| [] -> None
| bin :: bins ->
(* Allow symlinks when checking the binaries:,so in case they are
* relative ones (which can be resolved within the same partition),
* then we can check the architecture of their target.
*)
if Is.is_file ~followsymlinks:true bin then (
try
let resolved = Realpath.realpath bin in
let arch = Filearch.file_architecture resolved in
Some arch
with exn ->
if verbose () then
eprintf "check_architecture: %s: %s\n%!" bin
(Printexc.to_string exn);
loop bins
)
else
loop bins
in
loop arch_binaries
and check_hostname_linux () =
(* Red Hat-derived would be in /etc/sysconfig/network or
* /etc/hostname (RHEL 7+, F18+). Debian-derived in the file
* /etc/hostname. Very old Debian and SUSE use /etc/HOSTNAME.
* It's best to just look for each of these files in turn, rather
* than try anything clever based on distro.
*)
let rec loop = function
| [] -> None
| filename :: rest ->
match check_hostname_from_file filename with
| Some hostname -> Some hostname
| None -> loop rest
in
let hostname = loop [ "/etc/HOSTNAME"; "/etc/hostname" ] in
match hostname with
| (Some _) as hostname -> hostname
| None ->
if Is.is_file "/etc/sysconfig/network" then
with_augeas ~name:"check_hostname_from_sysconfig_network"
["/etc/sysconfig/network"]
check_hostname_from_sysconfig_network
else
None
(* Parse the hostname where it is stored directly in a file.
*
* For /etc/hostname:
* "The file should contain a single newline-terminated hostname
* string. Comments (lines starting with a "#") are ignored."
* [https://www.freedesktop.org/software/systemd/man/hostname.html]
*
* For other hostname files the exact format is not clear, but
* hostnames cannot begin with "#" and cannot be empty, so ignoring
* those lines seems safe.
*)
and check_hostname_from_file filename =
let chroot =
let name = sprintf "check_hostname_from_file: %s" filename in
Chroot.create ~name () in
let hostname = Chroot.f chroot read_small_file filename in
let keep_line line = line <> "" && not (String.is_prefix line "#") in
let lines = Option.map (List.filter keep_line) hostname in
match lines with
| None | Some [] -> None
| Some (hostname :: _) -> Some hostname
(* Parse the hostname from /etc/sysconfig/network. This must be
* called from the 'with_augeas' wrapper. Note that F18+ and
* RHEL7+ use /etc/hostname just like Debian.
*)
and check_hostname_from_sysconfig_network aug =
(* Errors here are not fatal (RHBZ#726739), since it could be
* just missing HOSTNAME field in the file.
*)
aug_get_noerrors aug "/files/etc/sysconfig/network/HOSTNAME"
(* The currently mounted device looks like a Linux /usr. *)
let check_linux_usr data =
data.os_type <- Some OS_TYPE_LINUX;
if Is.is_file "/lib/os-release" ~followsymlinks:true then
ignore (parse_os_release "/lib/os-release" data);
(match check_architecture () with
| None -> ()
| (Some _) as arch -> data.arch <- arch
)
(* The currently mounted device is a CoreOS root. From this partition we can
* only determine the hostname. All immutable OS files are under a separate
* read-only /usr partition.
*)
let check_coreos_root mountable data =
data.os_type <- Some OS_TYPE_LINUX;
data.distro <- Some DISTRO_COREOS;
(* Determine hostname. *)
data.hostname <- check_hostname_linux ();
(* CoreOS does not contain /etc/fstab to determine the mount points.
* Associate this filesystem with the "/" mount point.
*)
data.fstab <- [ mountable, "/" ]
(* The currently mounted device looks like a CoreOS /usr. In CoreOS
* the read-only /usr contains the OS version. The /etc/os-release is a
* link to /usr/share/coreos/os-release.
*)
let check_coreos_usr mountable data =
data.os_type <- Some OS_TYPE_LINUX;
data.distro <- Some DISTRO_COREOS;
if Is.is_file "/lib/os-release" ~followsymlinks:true then
ignore (parse_os_release "/lib/os-release" data)
else if Is.is_file "/share/coreos/lsb-release" ~followsymlinks:true then
ignore (parse_lsb_release "/share/coreos/lsb-release" data);
(* Determine the architecture. *)
(match check_architecture () with
| None -> ()
| (Some _) as arch -> data.arch <- arch
);
(* CoreOS does not contain /etc/fstab to determine the mount points.
* Associate this filesystem with the "/usr" mount point.
*)
data.fstab <- [ mountable, "/usr" ]
let rec check_freebsd_root mountable data =
let os_type = OS_TYPE_FREEBSD and distro = DISTRO_FREEBSD in
data.os_type <- Some os_type;
data.distro <- Some distro;
(* FreeBSD has no authoritative version file. The version number is
* in /etc/motd, which the system administrator might edit, but
* we'll use that anyway.
*)
if Is.is_file "/etc/motd" ~followsymlinks:true then
ignore (parse_generic distro "/etc/motd" data);
(* Determine the architecture. *)
data.arch <- check_architecture ();
(* We already know /etc/fstab exists because it's part of the test
* in the caller.
*)
data.fstab <- Inspect_fs_unix_fstab.check_fstab mountable os_type;
data.hostname <- check_hostname_freebsd ()
(* Parse the hostname from /etc/rc.conf. On FreeBSD and NetBSD
* this file contains comments, blank lines and:
* hostname="freebsd8.example.com"
* ifconfig_re0="DHCP"
* keymap="uk.iso"
* sshd_enable="YES"
*)
and check_hostname_freebsd () =
let chroot = Chroot.create ~name:"check_hostname_freebsd" () in
let filename = "/etc/rc.conf" in
try
let lines = Chroot.f chroot read_small_file filename in
let lines =
match lines with None -> raise Not_found | Some lines -> lines in
let rec loop = function
| [] ->
raise Not_found
| line :: _ when String.is_prefix line "hostname=\"" ||
String.is_prefix line "hostname='" ->
let len = String.length line - 10 - 1 in
String.sub line 10 len
| line :: _ when String.is_prefix line "hostname=" ->
let len = String.length line - 9 in
String.sub line 9 len
| _ :: lines ->
loop lines
in
let hostname = loop lines in
Some hostname
with
Not_found -> None
let rec check_netbsd_root mountable data =
let os_type = OS_TYPE_NETBSD and distro = DISTRO_NETBSD in
data.os_type <- Some os_type;
data.distro <- Some distro;
if Is.is_file "/etc/release" ~followsymlinks:true then
ignore (parse_generic ~rex:re_netbsd distro "/etc/release" data);
(* Determine the architecture. *)
data.arch <- check_architecture ();
(* We already know /etc/fstab exists because it's part of the test
* in the caller.
*)
data.fstab <- Inspect_fs_unix_fstab.check_fstab mountable os_type;
data.hostname <- check_hostname_freebsd ()
and check_hostname_netbsd () = check_hostname_freebsd ()
let rec check_openbsd_root mountable data =
let os_type = OS_TYPE_FREEBSD and distro = DISTRO_FREEBSD in
data.os_type <- Some os_type;
data.distro <- Some distro;
(* The first line of /etc/motd gets automatically updated at boot. *)
if Is.is_file "/etc/motd" ~followsymlinks:true then
ignore (parse_generic distro "/etc/motd" data);
(* Before the first boot, the first line will look like this:
*
* OpenBSD ?.? (UNKNOWN)
*
* The previous C code used to check for this case explicitly,
* but in this code, parse_generic should be unable to extract
* any version and so should return with [data.version = None].
*)
(* Determine the architecture. *)
data.arch <- check_architecture ();
(* We already know /etc/fstab exists because it's part of the test
* in the caller.
*)
data.fstab <- Inspect_fs_unix_fstab.check_fstab mountable os_type;
data.hostname <- check_hostname_freebsd ()
and check_hostname_openbsd () =
check_hostname_from_file "/etc/myname"
let hurd_root_tests : tests = [
(* Newer distros include /etc/os-release which is reasonably
* standardized. This entry should be first.
*)
"/etc/os-release", parse_os_release;
"/etc/debian_version", parse_generic DISTRO_DEBIAN;
(* Arch Hurd also exists, but inconveniently it doesn't have
* the normal /etc/arch-release file. XXX
*)
]
(* The currently mounted device may be a Hurd root. Hurd has distros
* just like Linux.
*)
let rec check_hurd_root mountable data =
let os_type = OS_TYPE_HURD in
data.os_type <- Some os_type;
check_tests data hurd_root_tests;
(* Determine the architecture. *)
data.arch <- check_architecture ();
(* We already know /etc/fstab exists because it's part of the test
* in the caller.
*)
data.fstab <- Inspect_fs_unix_fstab.check_fstab mountable os_type;
data.hostname <- check_hostname_hurd ()
and check_hostname_hurd () = check_hostname_linux ()
let rec check_minix_root data =
let os_type = OS_TYPE_MINIX in
data.os_type <- Some os_type;
if Is.is_file "/etc/version" ~followsymlinks:true then (
ignore (parse_generic ~rex:re_minix DISTRO_MEEGO (* XXX unset below *)
"/etc/version" data);
data.distro <- None
);
(* Determine the architecture. *)
data.arch <- check_architecture ();
(* TODO: enable fstab inspection once resolve_fstab_device
* implements the proper mapping from the Minix device names
* to the appliance names.
*)
data.hostname <- check_hostname_minix ()
and check_hostname_minix () =
check_hostname_from_file "/etc/hostname.file"
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