9d7248cd87
* gnu/services/databases.scm (postgresql-service-type)[description]: New field. (memcached-service-type)[description]: New field. (mysql-service-type)[description]: New field. (redis-service-type)[description]: New field. * gnu/services/desktop.scm (geoclue-service-type)[description]: New field. (udisks-service-type)[description]: New field. (elogind-service-type)[description]: New field. (account-service-type)[description]: New field. * gnu/services/kerberos.scm (krb5-service-type)[description]: New field. (pam-krb5-service-type)[description]: New field. * gnu/services/lirc.scm (lirc-service-type)[description]: New field. * gnu/services/mail.scm (dovecot-service-type)[description]: New field. (opensmtpd-service-type)[description]: New field. (mail-aliases-service-type)[description]: New field. (exim-service-type)[description]: New field. * gnu/services/monitoring.scm (zabbix-server-service-type)[description]: New field. (zabbix-agent-service-type)[description]: New field. * gnu/services/nfs.scm (rpcbind-service-type)[description]: New field. (pipefs-service-type)[description]: New field. (gss-service-type)[description]: New field. (idmap-service-type)[description]: New field. * gnu/services/spice.scm (spice-vdagent-service-type)[description]: New field. * gnu/services/sysctl.scm (sysctl-service-type)[description]: New field. * gnu/services/virtualization.scm (libvirt-service-type)[description]: New field. (virtlog-service-type)[description]: New field. * gnu/services/vpn.scm (openvpn-server-service-type)[description]: New field. (openvpn-client-service-type)[description]: New field. (wireguard-service-type)[description]: New field. * gnu/services/web.scm (httpd-service-type)[description]: New field. (fcgiwrap-service-type)[description]: New field. (agate-service-type)[description]: New field. [name]: Fix.
1220 lines
45 KiB
Scheme
1220 lines
45 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2017 Ryan Moe <ryan.moe@gmail.com>
|
||
;;; Copyright © 2018, 2020-2022 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2020,2021 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
||
;;; Copyright © 2021 Timotej Lazar <timotej.lazar@araneo.si>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; GNU Guix 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 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (gnu services virtualization)
|
||
#:use-module (gnu bootloader)
|
||
#:use-module (gnu bootloader grub)
|
||
#:use-module (gnu image)
|
||
#:use-module (gnu packages admin)
|
||
#:use-module (gnu packages gdb)
|
||
#:use-module (gnu packages package-management)
|
||
#:use-module (gnu packages ssh)
|
||
#:use-module (gnu packages virtualization)
|
||
#:use-module (gnu services base)
|
||
#:use-module (gnu services configuration)
|
||
#:use-module (gnu services dbus)
|
||
#:use-module (gnu services shepherd)
|
||
#:use-module (gnu services ssh)
|
||
#:use-module (gnu services)
|
||
#:use-module (gnu system file-systems)
|
||
#:use-module (gnu system hurd)
|
||
#:use-module (gnu system image)
|
||
#:use-module (gnu system shadow)
|
||
#:use-module (gnu system)
|
||
#:use-module (guix derivations)
|
||
#:use-module (guix gexp)
|
||
#:use-module (guix modules)
|
||
#:use-module (guix monads)
|
||
#:use-module (guix packages)
|
||
#:use-module (guix records)
|
||
#:use-module (guix store)
|
||
#:use-module (guix utils)
|
||
|
||
#:use-module (srfi srfi-9)
|
||
#:use-module (srfi srfi-26)
|
||
#:use-module (rnrs bytevectors)
|
||
#:use-module (ice-9 match)
|
||
|
||
#:export (%hurd-vm-operating-system
|
||
hurd-vm-configuration
|
||
hurd-vm-configuration?
|
||
hurd-vm-configuration-os
|
||
hurd-vm-configuration-qemu
|
||
hurd-vm-configuration-image
|
||
hurd-vm-configuration-disk-size
|
||
hurd-vm-configuration-memory-size
|
||
hurd-vm-configuration-options
|
||
hurd-vm-configuration-id
|
||
hurd-vm-configuration-net-options
|
||
hurd-vm-configuration-secrets
|
||
|
||
hurd-vm-disk-image
|
||
hurd-vm-port
|
||
hurd-vm-net-options
|
||
hurd-vm-service-type
|
||
|
||
libvirt-configuration
|
||
libvirt-service-type
|
||
virtlog-configuration
|
||
virtlog-service-type
|
||
|
||
%qemu-platforms
|
||
lookup-qemu-platforms
|
||
qemu-platform?
|
||
qemu-platform-name
|
||
|
||
qemu-binfmt-configuration
|
||
qemu-binfmt-configuration?
|
||
qemu-binfmt-service-type
|
||
|
||
qemu-guest-agent-configuration
|
||
qemu-guest-agent-configuration?
|
||
qemu-guest-agent-service-type))
|
||
|
||
(define (uglify-field-name field-name)
|
||
(let ((str (symbol->string field-name)))
|
||
(string-join
|
||
(string-split (string-delete #\? str) #\-)
|
||
"_")))
|
||
|
||
(define (quote-val val)
|
||
(string-append "\"" val "\""))
|
||
|
||
(define (serialize-field field-name val)
|
||
(format #t "~a = ~a\n" (uglify-field-name field-name) val))
|
||
|
||
(define (serialize-string field-name val)
|
||
(serialize-field field-name (quote-val val)))
|
||
|
||
(define (serialize-boolean field-name val)
|
||
(serialize-field field-name (if val 1 0)))
|
||
|
||
(define (serialize-integer field-name val)
|
||
(serialize-field field-name val))
|
||
|
||
(define (build-opt-list val)
|
||
(string-append
|
||
"["
|
||
(string-join (map quote-val val) ",")
|
||
"]"))
|
||
|
||
(define optional-list? list?)
|
||
(define optional-string? string?)
|
||
|
||
(define (serialize-list field-name val)
|
||
(serialize-field field-name (build-opt-list val)))
|
||
|
||
(define (serialize-optional-list field-name val)
|
||
(if (null? val)
|
||
(format #t "# ~a = []\n" (uglify-field-name field-name))
|
||
(serialize-list field-name val)))
|
||
|
||
(define (serialize-optional-string field-name val)
|
||
(if (string-null? val)
|
||
(format #t "# ~a = \"\"\n" (uglify-field-name field-name))
|
||
(serialize-string field-name val)))
|
||
|
||
(define-configuration libvirt-configuration
|
||
(libvirt
|
||
(file-like libvirt)
|
||
"Libvirt package.")
|
||
(qemu
|
||
(file-like qemu)
|
||
"Qemu package.")
|
||
|
||
(listen-tls?
|
||
(boolean #t)
|
||
"Flag listening for secure TLS connections on the public TCP/IP port.
|
||
must set @code{listen} for this to have any effect.
|
||
|
||
It is necessary to setup a CA and issue server certificates before
|
||
using this capability.")
|
||
(listen-tcp?
|
||
(boolean #f)
|
||
"Listen for unencrypted TCP connections on the public TCP/IP port.
|
||
must set @code{listen} for this to have any effect.
|
||
|
||
Using the TCP socket requires SASL authentication by default. Only
|
||
SASL mechanisms which support data encryption are allowed. This is
|
||
DIGEST_MD5 and GSSAPI (Kerberos5)")
|
||
(tls-port
|
||
(string "16514")
|
||
"Port for accepting secure TLS connections This can be a port number,
|
||
or service name")
|
||
(tcp-port
|
||
(string "16509")
|
||
"Port for accepting insecure TCP connections This can be a port number,
|
||
or service name")
|
||
(listen-addr
|
||
(string "0.0.0.0")
|
||
"IP address or hostname used for client connections.")
|
||
(mdns-adv?
|
||
(boolean #f)
|
||
"Flag toggling mDNS advertisement of the libvirt service.
|
||
|
||
Alternatively can disable for all services on a host by
|
||
stopping the Avahi daemon.")
|
||
(mdns-name
|
||
(string (string-append "Virtualization Host " (gethostname)))
|
||
"Default mDNS advertisement name. This must be unique on the
|
||
immediate broadcast network.")
|
||
(unix-sock-group
|
||
(string "libvirt")
|
||
"UNIX domain socket group ownership. This can be used to
|
||
allow a 'trusted' set of users access to management capabilities
|
||
without becoming root.")
|
||
(unix-sock-ro-perms
|
||
(string "0777")
|
||
"UNIX socket permissions for the R/O socket. This is used
|
||
for monitoring VM status only.")
|
||
(unix-sock-rw-perms
|
||
(string "0770")
|
||
"UNIX socket permissions for the R/W socket. Default allows
|
||
only root. If PolicyKit is enabled on the socket, the default
|
||
will change to allow everyone (eg, 0777)")
|
||
(unix-sock-admin-perms
|
||
(string "0777")
|
||
"UNIX socket permissions for the admin socket. Default allows
|
||
only owner (root), do not change it unless you are sure to whom
|
||
you are exposing the access to.")
|
||
(unix-sock-dir
|
||
(string "/var/run/libvirt")
|
||
"The directory in which sockets will be found/created.")
|
||
(auth-unix-ro
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||
(string "polkit")
|
||
"Authentication scheme for UNIX read-only sockets. By default
|
||
socket permissions allow anyone to connect")
|
||
(auth-unix-rw
|
||
(string "polkit")
|
||
"Authentication scheme for UNIX read-write sockets. By default
|
||
socket permissions only allow root. If PolicyKit support was compiled
|
||
into libvirt, the default will be to use 'polkit' auth.")
|
||
(auth-tcp
|
||
(string "sasl")
|
||
"Authentication scheme for TCP sockets. If you don't enable SASL,
|
||
then all TCP traffic is cleartext. Don't do this outside of a dev/test
|
||
scenario.")
|
||
(auth-tls
|
||
(string "none")
|
||
"Authentication scheme for TLS sockets. TLS sockets already have
|
||
encryption provided by the TLS layer, and limited authentication is
|
||
done by certificates.
|
||
|
||
It is possible to make use of any SASL authentication mechanism as
|
||
well, by using 'sasl' for this option")
|
||
(access-drivers
|
||
(optional-list '())
|
||
"API access control scheme.
|
||
|
||
By default an authenticated user is allowed access to all APIs. Access
|
||
drivers can place restrictions on this.")
|
||
(key-file
|
||
(string "")
|
||
"Server key file path. If set to an empty string, then no private key
|
||
is loaded.")
|
||
(cert-file
|
||
(string "")
|
||
"Server key file path. If set to an empty string, then no certificate
|
||
is loaded.")
|
||
(ca-file
|
||
(string "")
|
||
"Server key file path. If set to an empty string, then no CA certificate
|
||
is loaded.")
|
||
(crl-file
|
||
(string "")
|
||
"Certificate revocation list path. If set to an empty string, then no
|
||
CRL is loaded.")
|
||
(tls-no-sanity-cert
|
||
(boolean #f)
|
||
"Disable verification of our own server certificates.
|
||
|
||
When libvirtd starts it performs some sanity checks against its own
|
||
certificates.")
|
||
(tls-no-verify-cert
|
||
(boolean #f)
|
||
"Disable verification of client certificates.
|
||
|
||
Client certificate verification is the primary authentication mechanism.
|
||
Any client which does not present a certificate signed by the CA
|
||
will be rejected.")
|
||
(tls-allowed-dn-list
|
||
(optional-list '())
|
||
"Whitelist of allowed x509 Distinguished Name.")
|
||
(sasl-allowed-usernames
|
||
(optional-list '())
|
||
"Whitelist of allowed SASL usernames. The format for username
|
||
depends on the SASL authentication mechanism.")
|
||
(tls-priority
|
||
(string "NORMAL")
|
||
"Override the compile time default TLS priority string. The
|
||
default is usually \"NORMAL\" unless overridden at build time.
|
||
Only set this is it is desired for libvirt to deviate from
|
||
the global default settings.")
|
||
(max-clients
|
||
(integer 5000)
|
||
"Maximum number of concurrent client connections to allow
|
||
over all sockets combined.")
|
||
(max-queued-clients
|
||
(integer 1000)
|
||
"Maximum length of queue of connections waiting to be
|
||
accepted by the daemon. Note, that some protocols supporting
|
||
retransmission may obey this so that a later reattempt at
|
||
connection succeeds.")
|
||
(max-anonymous-clients
|
||
(integer 20)
|
||
"Maximum length of queue of accepted but not yet authenticated
|
||
clients. Set this to zero to turn this feature off")
|
||
(min-workers
|
||
(integer 5)
|
||
"Number of workers to start up initially.")
|
||
(max-workers
|
||
(integer 20)
|
||
"Maximum number of worker threads.
|
||
|
||
If the number of active clients exceeds @code{min-workers},
|
||
then more threads are spawned, up to max_workers limit.
|
||
Typically you'd want max_workers to equal maximum number
|
||
of clients allowed.")
|
||
(prio-workers
|
||
(integer 5)
|
||
"Number of priority workers. If all workers from above
|
||
pool are stuck, some calls marked as high priority
|
||
(notably domainDestroy) can be executed in this pool.")
|
||
(max-requests
|
||
(integer 20)
|
||
"Total global limit on concurrent RPC calls.")
|
||
(max-client-requests
|
||
(integer 5)
|
||
"Limit on concurrent requests from a single client
|
||
connection. To avoid one client monopolizing the server
|
||
this should be a small fraction of the global max_requests
|
||
and max_workers parameter.")
|
||
(admin-min-workers
|
||
(integer 1)
|
||
"Same as @code{min-workers} but for the admin interface.")
|
||
(admin-max-workers
|
||
(integer 5)
|
||
"Same as @code{max-workers} but for the admin interface.")
|
||
(admin-max-clients
|
||
(integer 5)
|
||
"Same as @code{max-clients} but for the admin interface.")
|
||
(admin-max-queued-clients
|
||
(integer 5)
|
||
"Same as @code{max-queued-clients} but for the admin interface.")
|
||
(admin-max-client-requests
|
||
(integer 5)
|
||
"Same as @code{max-client-requests} but for the admin interface.")
|
||
(log-level
|
||
(integer 3)
|
||
"Logging level. 4 errors, 3 warnings, 2 information, 1 debug.")
|
||
(log-filters
|
||
(string "3:remote 4:event")
|
||
"Logging filters.
|
||
|
||
A filter allows selecting a different logging level for a given category
|
||
of logs
|
||
The format for a filter is one of:
|
||
@itemize
|
||
@item x:name
|
||
|
||
@item x:+name
|
||
@end itemize
|
||
|
||
where @code{name} is a string which is matched against the category
|
||
given in the @code{VIR_LOG_INIT()} at the top of each libvirt source
|
||
file, e.g., \"remote\", \"qemu\", or \"util.json\" (the name in the
|
||
filter can be a substring of the full category name, in order
|
||
to match multiple similar categories), the optional \"+\" prefix
|
||
tells libvirt to log stack trace for each message matching
|
||
name, and @code{x} is the minimal level where matching messages should
|
||
be logged:
|
||
|
||
@itemize
|
||
@item 1: DEBUG
|
||
@item 2: INFO
|
||
@item 3: WARNING
|
||
@item 4: ERROR
|
||
@end itemize
|
||
|
||
Multiple filters can be defined in a single filters statement, they just
|
||
need to be separated by spaces.")
|
||
(log-outputs
|
||
(string "3:syslog:libvirtd")
|
||
"Logging outputs.
|
||
|
||
An output is one of the places to save logging information
|
||
The format for an output can be:
|
||
|
||
@table @code
|
||
@item x:stderr
|
||
output goes to stderr
|
||
|
||
@item x:syslog:name
|
||
use syslog for the output and use the given name as the ident
|
||
|
||
@item x:file:file_path
|
||
output to a file, with the given filepath
|
||
|
||
@item x:journald
|
||
output to journald logging system
|
||
@end table
|
||
|
||
In all case the x prefix is the minimal level, acting as a filter
|
||
|
||
@itemize
|
||
@item 1: DEBUG
|
||
@item 2: INFO
|
||
@item 3: WARNING
|
||
@item 4: ERROR
|
||
@end itemize
|
||
|
||
Multiple outputs can be defined, they just need to be separated by spaces.")
|
||
(audit-level
|
||
(integer 1)
|
||
"Allows usage of the auditing subsystem to be altered
|
||
|
||
@itemize
|
||
@item 0: disable all auditing
|
||
@item 1: enable auditing, only if enabled on host
|
||
@item 2: enable auditing, and exit if disabled on host.
|
||
@end itemize
|
||
")
|
||
(audit-logging
|
||
(boolean #f)
|
||
"Send audit messages via libvirt logging infrastructure.")
|
||
(host-uuid
|
||
(optional-string "")
|
||
"Host UUID. UUID must not have all digits be the same.")
|
||
(host-uuid-source
|
||
(string "smbios")
|
||
"Source to read host UUID.
|
||
|
||
@itemize
|
||
|
||
@item @code{smbios}: fetch the UUID from @code{dmidecode -s system-uuid}
|
||
|
||
@item @code{machine-id}: fetch the UUID from @code{/etc/machine-id}
|
||
|
||
@end itemize
|
||
|
||
If @code{dmidecode} does not provide a valid UUID a temporary UUID
|
||
will be generated.")
|
||
(keepalive-interval
|
||
(integer 5)
|
||
"A keepalive message is sent to a client after
|
||
@code{keepalive_interval} seconds of inactivity to check if
|
||
the client is still responding. If set to -1, libvirtd will
|
||
never send keepalive requests; however clients can still send
|
||
them and the daemon will send responses.")
|
||
(keepalive-count
|
||
(integer 5)
|
||
"Maximum number of keepalive messages that are allowed to be sent
|
||
to the client without getting any response before the connection is
|
||
considered broken.
|
||
|
||
In other words, the connection is automatically
|
||
closed approximately after
|
||
@code{keepalive_interval * (keepalive_count + 1)} seconds since the last
|
||
message received from the client. When @code{keepalive-count} is
|
||
set to 0, connections will be automatically closed after
|
||
@code{keepalive-interval} seconds of inactivity without sending any
|
||
keepalive messages.")
|
||
(admin-keepalive-interval
|
||
(integer 5)
|
||
"Same as above but for admin interface.")
|
||
(admin-keepalive-count
|
||
(integer 5)
|
||
"Same as above but for admin interface.")
|
||
(ovs-timeout
|
||
(integer 5)
|
||
"Timeout for Open vSwitch calls.
|
||
|
||
The @code{ovs-vsctl} utility is used for the configuration and
|
||
its timeout option is set by default to 5 seconds to avoid
|
||
potential infinite waits blocking libvirt."))
|
||
|
||
(define* (libvirt-conf-file config)
|
||
"Return a libvirtd config file."
|
||
(plain-file "libvirtd.conf"
|
||
(with-output-to-string
|
||
(lambda ()
|
||
(serialize-configuration config libvirt-configuration-fields)))))
|
||
|
||
(define %libvirt-accounts
|
||
(list (user-group (name "libvirt") (system? #t))))
|
||
|
||
(define (%libvirt-activation config)
|
||
(let ((sock-dir (libvirt-configuration-unix-sock-dir config)))
|
||
#~(begin
|
||
(use-modules (guix build utils))
|
||
(mkdir-p #$sock-dir))))
|
||
|
||
|
||
(define (libvirt-shepherd-service config)
|
||
(let* ((config-file (libvirt-conf-file config))
|
||
(libvirt (libvirt-configuration-libvirt config)))
|
||
(list (shepherd-service
|
||
(documentation "Run the libvirt daemon.")
|
||
(provision '(libvirtd))
|
||
(start #~(make-forkexec-constructor
|
||
(list (string-append #$libvirt "/sbin/libvirtd")
|
||
"-f" #$config-file)
|
||
;; For finding qemu and ip binaries.
|
||
#:environment-variables
|
||
(list (string-append
|
||
"PATH=/run/current-system/profile/bin:"
|
||
"/run/current-system/profile/sbin"))))
|
||
(stop #~(make-kill-destructor))))))
|
||
|
||
(define libvirt-service-type
|
||
(service-type (name 'libvirt)
|
||
(extensions
|
||
(list
|
||
(service-extension polkit-service-type
|
||
(compose list libvirt-configuration-libvirt))
|
||
(service-extension profile-service-type
|
||
(lambda (config)
|
||
(list
|
||
(libvirt-configuration-libvirt config)
|
||
(libvirt-configuration-qemu config))))
|
||
(service-extension activation-service-type
|
||
%libvirt-activation)
|
||
(service-extension shepherd-root-service-type
|
||
libvirt-shepherd-service)
|
||
(service-extension account-service-type
|
||
(const %libvirt-accounts))))
|
||
(default-value (libvirt-configuration))
|
||
(description "Run @command{libvirtd}, a daemon of the libvirt
|
||
virtualization management system. This daemon runs on host servers and
|
||
performs required management tasks for virtualized guests.")))
|
||
|
||
|
||
(define-record-type* <virtlog-configuration>
|
||
virtlog-configuration make-virtlog-configuration
|
||
virtlog-configuration?
|
||
(libvirt virtlog-configuration-libvirt
|
||
(default libvirt))
|
||
(log-level virtlog-configuration-log-level
|
||
(default 3))
|
||
(log-filters virtlog-configuration-log-filters
|
||
(default "3:remote 4:event"))
|
||
(log-outputs virtlog-configuration-log-outputs
|
||
(default "3:syslog:virtlogd"))
|
||
(max-clients virtlog-configuration-max-clients
|
||
(default 1024))
|
||
(max-size virtlog-configuration-max-size
|
||
(default 2097152)) ;; 2MB
|
||
(max-backups virtlog-configuration-max-backups
|
||
(default 3)))
|
||
|
||
(define* (virtlogd-conf-file config)
|
||
"Return a virtlogd config file."
|
||
(plain-file "virtlogd.conf"
|
||
(string-append
|
||
"log_level = " (number->string (virtlog-configuration-log-level config)) "\n"
|
||
"log_filters = \"" (virtlog-configuration-log-filters config) "\"\n"
|
||
"log_outputs = \"" (virtlog-configuration-log-outputs config) "\"\n"
|
||
"max_clients = " (number->string (virtlog-configuration-max-clients config)) "\n"
|
||
"max_size = " (number->string (virtlog-configuration-max-size config)) "\n"
|
||
"max_backups = " (number->string (virtlog-configuration-max-backups config)) "\n")))
|
||
|
||
(define (virtlogd-shepherd-service config)
|
||
(let* ((config-file (virtlogd-conf-file config))
|
||
(libvirt (virtlog-configuration-libvirt config)))
|
||
(list (shepherd-service
|
||
(documentation "Run the virtlog daemon.")
|
||
(provision '(virtlogd))
|
||
(start #~(make-forkexec-constructor
|
||
(list (string-append #$libvirt "/sbin/virtlogd")
|
||
"-f" #$config-file)))
|
||
(stop #~(make-kill-destructor))))))
|
||
|
||
(define virtlog-service-type
|
||
(service-type (name 'virtlogd)
|
||
(extensions
|
||
(list
|
||
(service-extension shepherd-root-service-type
|
||
virtlogd-shepherd-service)))
|
||
(default-value (virtlog-configuration))
|
||
(description "Run @command{virtlogd}, a daemon libvirt that is
|
||
used to manage logs from @acronym{VM, virtual machine} consoles.")))
|
||
|
||
(define (generate-libvirt-documentation)
|
||
(generate-documentation
|
||
`((libvirt-configuration ,libvirt-configuration-fields))
|
||
'libvirt-configuration))
|
||
|
||
|
||
;;;
|
||
;;; Transparent QEMU emulation via binfmt_misc.
|
||
;;;
|
||
|
||
;; Platforms that QEMU can emulate.
|
||
(define-record-type* <qemu-platform>
|
||
qemu-platform make-qemu-platform
|
||
qemu-platform?
|
||
(name qemu-platform-name) ;string
|
||
(family qemu-platform-family) ;string
|
||
(magic qemu-platform-magic) ;bytevector
|
||
(mask qemu-platform-mask) ;bytevector
|
||
|
||
;; Default flags:
|
||
;;
|
||
;; "F": fix binary. Open the qemu-user binary (statically linked) as soon
|
||
;; as binfmt_misc interpretation is handled.
|
||
;;
|
||
;; "P": preserve argv[0]. QEMU 6.0 detects whether it's started with this
|
||
;; flag and automatically does the right thing. Without this flag,
|
||
;; argv[0] is replaced by the absolute file name of the executable, an
|
||
;; observable difference that can cause discrepancies.
|
||
(flags qemu-platform-flags (default "FP"))) ;string
|
||
|
||
(define-syntax bv
|
||
(lambda (s)
|
||
"Expand the given string into a bytevector."
|
||
(syntax-case s ()
|
||
((_ str)
|
||
(string? (syntax->datum #'str))
|
||
(let ((bv (u8-list->bytevector
|
||
(map char->integer
|
||
(string->list (syntax->datum #'str))))))
|
||
bv)))))
|
||
|
||
;;; The platform descriptions below are taken from
|
||
;;; 'scripts/qemu-binfmt-conf.sh' in QEMU.
|
||
|
||
(define %i386
|
||
(qemu-platform
|
||
(name "i386")
|
||
(family "i386")
|
||
(magic (bv "\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %alpha
|
||
(qemu-platform
|
||
(name "alpha")
|
||
(family "alpha")
|
||
(magic (bv "\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x26\x90"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %arm
|
||
(qemu-platform
|
||
(name "arm")
|
||
(family "arm")
|
||
(magic (bv "\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %armeb
|
||
(qemu-platform
|
||
(name "armeb")
|
||
(family "arm")
|
||
(magic (bv "\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %sparc
|
||
(qemu-platform
|
||
(name "sparc")
|
||
(family "sparc")
|
||
(magic (bv "\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x02"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %sparc32plus
|
||
(qemu-platform
|
||
(name "sparc32plus")
|
||
(family "sparc")
|
||
(magic (bv "\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x12"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %ppc
|
||
(qemu-platform
|
||
(name "ppc")
|
||
(family "ppc")
|
||
(magic (bv "\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x14"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %ppc64
|
||
(qemu-platform
|
||
(name "ppc64")
|
||
(family "ppc")
|
||
(magic (bv "\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %ppc64le
|
||
(qemu-platform
|
||
(name "ppc64le")
|
||
(family "ppcle")
|
||
(magic (bv "\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x15\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\x00"))))
|
||
|
||
(define %m68k
|
||
(qemu-platform
|
||
(name "m68k")
|
||
(family "m68k")
|
||
(magic (bv "\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x04"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
;; XXX: We could use the other endianness on a MIPS host.
|
||
(define %mips
|
||
(qemu-platform
|
||
(name "mips")
|
||
(family "mips")
|
||
(magic (bv "\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %mipsel
|
||
(qemu-platform
|
||
(name "mipsel")
|
||
(family "mips")
|
||
(magic (bv "\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %mipsn32
|
||
(qemu-platform
|
||
(name "mipsn32")
|
||
(family "mips")
|
||
(magic (bv "\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %mipsn32el
|
||
(qemu-platform
|
||
(name "mipsn32el")
|
||
(family "mips")
|
||
(magic (bv "\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %mips64
|
||
(qemu-platform
|
||
(name "mips64")
|
||
(family "mips")
|
||
(magic (bv "\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %mips64el
|
||
(qemu-platform
|
||
(name "mips64el")
|
||
(family "mips")
|
||
(magic (bv "\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %riscv32
|
||
(qemu-platform
|
||
(name "riscv32")
|
||
(family "riscv")
|
||
(magic (bv "\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xf3\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %riscv64
|
||
(qemu-platform
|
||
(name "riscv64")
|
||
(family "riscv")
|
||
(magic (bv "\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xf3\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %sh4
|
||
(qemu-platform
|
||
(name "sh4")
|
||
(family "sh4")
|
||
(magic (bv "\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2a\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %sh4eb
|
||
(qemu-platform
|
||
(name "sh4eb")
|
||
(family "sh4")
|
||
(magic (bv "\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2a"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %s390x
|
||
(qemu-platform
|
||
(name "s390x")
|
||
(family "s390x")
|
||
(magic (bv "\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x16"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %aarch64
|
||
(qemu-platform
|
||
(name "aarch64")
|
||
(family "arm")
|
||
(magic (bv "\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff"))))
|
||
|
||
(define %hppa
|
||
(qemu-platform
|
||
(name "hppa")
|
||
(family "hppa")
|
||
(magic (bv "\x7f\x45\x4c\x46\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x0f"))
|
||
(mask (bv "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff"))))
|
||
|
||
(define %qemu-platforms
|
||
(list %i386 %alpha %arm %sparc32plus %ppc %ppc64 %ppc64le %m68k
|
||
%mips %mipsel %mipsn32 %mipsn32el %mips64 %mips64el
|
||
%riscv32 %riscv64 %sh4 %sh4eb %s390x %aarch64 %hppa))
|
||
|
||
(define (lookup-qemu-platforms . names)
|
||
"Return the list of QEMU platforms that match NAMES--a list of names such as
|
||
\"arm\", \"hppa\", etc."
|
||
(filter (lambda (platform)
|
||
(member (qemu-platform-name platform) names))
|
||
%qemu-platforms))
|
||
|
||
(define-record-type* <qemu-binfmt-configuration>
|
||
qemu-binfmt-configuration make-qemu-binfmt-configuration
|
||
qemu-binfmt-configuration?
|
||
(qemu qemu-binfmt-configuration-qemu
|
||
(default qemu))
|
||
(platforms qemu-binfmt-configuration-platforms
|
||
(default '()))) ;safest default
|
||
|
||
(define (qemu-platform->binfmt qemu platform)
|
||
"Return a gexp that evaluates to a binfmt string for PLATFORM, using the
|
||
given QEMU package."
|
||
(define (bytevector->binfmt-string bv)
|
||
;; Return a binfmt-friendly string representing BV. Hex-encode every
|
||
;; character, in particular because the doc notes "that you must escape
|
||
;; any NUL bytes; parsing halts at the first one".
|
||
(string-concatenate
|
||
(map (lambda (n)
|
||
(string-append "\\x"
|
||
(string-pad (number->string n 16) 2 #\0)))
|
||
(bytevector->u8-list bv))))
|
||
|
||
(match platform
|
||
(($ <qemu-platform> name family magic mask flags)
|
||
;; See 'Documentation/binfmt_misc.txt' in the kernel.
|
||
#~(string-append ":qemu-" #$name ":M::"
|
||
#$(bytevector->binfmt-string magic)
|
||
":" #$(bytevector->binfmt-string mask)
|
||
":" #$qemu:static "/bin/qemu-" #$name
|
||
":" #$flags))))
|
||
|
||
(define %binfmt-mount-point
|
||
(file-system-mount-point %binary-format-file-system))
|
||
|
||
(define %binfmt-register-file
|
||
(string-append %binfmt-mount-point "/register"))
|
||
|
||
(define qemu-binfmt-shepherd-services
|
||
(match-lambda
|
||
(($ <qemu-binfmt-configuration> qemu platforms)
|
||
(list (shepherd-service
|
||
(provision '(qemu-binfmt))
|
||
(documentation "Install binfmt_misc handlers for QEMU.")
|
||
(requirement '(file-system-/proc/sys/fs/binfmt_misc))
|
||
(start #~(lambda ()
|
||
;; Register the handlers for all of PLATFORMS.
|
||
(for-each (lambda (str)
|
||
(call-with-output-file
|
||
#$%binfmt-register-file
|
||
(lambda (port)
|
||
(display str port))))
|
||
(list
|
||
#$@(map (cut qemu-platform->binfmt qemu
|
||
<>)
|
||
platforms)))
|
||
#t))
|
||
(stop #~(lambda (_)
|
||
;; Unregister the handlers.
|
||
(for-each (lambda (name)
|
||
(let ((file (string-append
|
||
#$%binfmt-mount-point
|
||
"/qemu-" name)))
|
||
(call-with-output-file file
|
||
(lambda (port)
|
||
(display "-1" port)))))
|
||
'#$(map qemu-platform-name platforms))
|
||
#f)))))))
|
||
|
||
(define qemu-binfmt-service-type
|
||
;; TODO: Make a separate binfmt_misc service out of this?
|
||
(service-type (name 'qemu-binfmt)
|
||
(extensions
|
||
(list (service-extension file-system-service-type
|
||
(const
|
||
(list %binary-format-file-system)))
|
||
(service-extension shepherd-root-service-type
|
||
qemu-binfmt-shepherd-services)))
|
||
(default-value (qemu-binfmt-configuration))
|
||
(description
|
||
"This service supports transparent emulation of binaries
|
||
compiled for other architectures using QEMU and the @code{binfmt_misc}
|
||
functionality of the kernel Linux.")))
|
||
|
||
|
||
;;;
|
||
;;; QEMU guest agent service.
|
||
;;;
|
||
|
||
(define-configuration qemu-guest-agent-configuration
|
||
(qemu
|
||
(file-like qemu-minimal)
|
||
"QEMU package.")
|
||
(device
|
||
(string "")
|
||
"Path to device or socket used to communicate with the host. If not
|
||
specified, the QEMU default path is used."))
|
||
|
||
(define (qemu-guest-agent-shepherd-service config)
|
||
(let ((qemu (qemu-guest-agent-configuration-qemu config))
|
||
(device (qemu-guest-agent-configuration-device config)))
|
||
(list
|
||
(shepherd-service
|
||
(provision '(qemu-guest-agent))
|
||
(documentation "Run the QEMU guest agent.")
|
||
(start #~(make-forkexec-constructor
|
||
`(,(string-append #$qemu "/bin/qemu-ga") "--daemon"
|
||
"--pidfile=/var/run/qemu-ga.pid"
|
||
"--statedir=/var/run"
|
||
,@(if #$device
|
||
(list (string-append "--path=" #$device))
|
||
'()))
|
||
#:pid-file "/var/run/qemu-ga.pid"
|
||
#:log-file "/var/log/qemu-ga.log"))
|
||
(stop #~(make-kill-destructor))))))
|
||
|
||
(define qemu-guest-agent-service-type
|
||
(service-type
|
||
(name 'qemu-guest-agent)
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
qemu-guest-agent-shepherd-service)))
|
||
(default-value (qemu-guest-agent-configuration))
|
||
(description "Run the QEMU guest agent.")))
|
||
|
||
|
||
;;;
|
||
;;; Secrets for guest VMs.
|
||
;;;
|
||
|
||
(define (secret-service-shepherd-services port)
|
||
"Return a Shepherd service that fetches sensitive material at local PORT,
|
||
over TCP. Reboot upon failure."
|
||
;; This is a Shepherd service, rather than an activation snippet, to make
|
||
;; sure it is started once 'networking' is up so it can accept incoming
|
||
;; connections.
|
||
(list
|
||
(shepherd-service
|
||
(documentation "Fetch secrets from the host at startup time.")
|
||
(provision '(secret-service-client))
|
||
(requirement '(loopback networking))
|
||
(modules '((gnu build secret-service)
|
||
(guix build utils)))
|
||
(start (with-imported-modules '((gnu build secret-service)
|
||
(guix build utils))
|
||
#~(lambda ()
|
||
;; Since shepherd's output port goes to /dev/log, write this
|
||
;; message to stderr so it's visible on the Mach console.
|
||
(format (current-error-port)
|
||
"receiving secrets from the host...~%")
|
||
(force-output (current-error-port))
|
||
|
||
(let ((sent (secret-service-receive-secrets #$port)))
|
||
(unless sent
|
||
(sleep 3)
|
||
(reboot))))))
|
||
(stop #~(const #f)))))
|
||
|
||
(define secret-service-type
|
||
(service-type
|
||
(name 'secret-service)
|
||
(extensions (list (service-extension shepherd-root-service-type
|
||
secret-service-shepherd-services)
|
||
|
||
;; Make every Shepherd service depend on
|
||
;; 'secret-service-client'.
|
||
(service-extension user-processes-service-type
|
||
(const '(secret-service-client)))))
|
||
(description
|
||
"This service fetches secret key and other sensitive material over TCP at
|
||
boot time. This service is meant to be used by virtual machines (VMs) that
|
||
can only be accessed by their host.")))
|
||
|
||
(define (secret-service-operating-system os)
|
||
"Return an operating system based on OS that includes the secret-service,
|
||
that will be listening to receive secret keys on port 1004, TCP."
|
||
(operating-system
|
||
(inherit os)
|
||
(services
|
||
;; Turn off SSH and Guix key generation that normally happens during
|
||
;; activation: that requires entropy and thus takes time during boot, and
|
||
;; those keys are going to be overwritten by secrets received from the
|
||
;; host anyway.
|
||
(cons (service secret-service-type 1004)
|
||
(modify-services (operating-system-user-services os)
|
||
(openssh-service-type
|
||
config => (openssh-configuration
|
||
(inherit config)
|
||
(generate-host-keys? #f)))
|
||
(guix-service-type
|
||
config => (guix-configuration
|
||
(generate-substitute-key? #f))))))))
|
||
|
||
|
||
;;;
|
||
;;; The Hurd in VM service: a Childhurd.
|
||
;;;
|
||
|
||
(define %hurd-vm-operating-system
|
||
(operating-system
|
||
(inherit %hurd-default-operating-system)
|
||
(host-name "childhurd")
|
||
(timezone "Europe/Amsterdam")
|
||
(bootloader (bootloader-configuration
|
||
(bootloader grub-minimal-bootloader)
|
||
(targets '("/dev/vda"))
|
||
(timeout 0)))
|
||
(packages (cons* gdb-minimal
|
||
(operating-system-packages
|
||
%hurd-default-operating-system)))
|
||
(services (cons*
|
||
(service openssh-service-type
|
||
(openssh-configuration
|
||
(openssh openssh-sans-x)
|
||
(use-pam? #f)
|
||
(port-number 2222)
|
||
(permit-root-login #t)
|
||
(allow-empty-passwords? #t)
|
||
(password-authentication? #t)))
|
||
|
||
;; By default, the secret service introduces a pre-initialized
|
||
;; /etc/guix/acl file in the childhurd. Thus, clear
|
||
;; 'authorize-key?' so that it's not overridden at activation
|
||
;; time.
|
||
(modify-services %base-services/hurd
|
||
(guix-service-type config =>
|
||
(guix-configuration
|
||
(inherit config)
|
||
(authorize-key? #f))))))))
|
||
|
||
(define-record-type* <hurd-vm-configuration>
|
||
hurd-vm-configuration make-hurd-vm-configuration
|
||
hurd-vm-configuration?
|
||
(os hurd-vm-configuration-os ;<operating-system>
|
||
(default %hurd-vm-operating-system))
|
||
(qemu hurd-vm-configuration-qemu ;file-like
|
||
(default qemu-minimal))
|
||
(image hurd-vm-configuration-image ;string
|
||
(thunked)
|
||
(default (hurd-vm-disk-image this-record)))
|
||
(disk-size hurd-vm-configuration-disk-size ;number or 'guess
|
||
(default 'guess))
|
||
(memory-size hurd-vm-configuration-memory-size ;number
|
||
(default 512))
|
||
(options hurd-vm-configuration-options ;list of string
|
||
(default `("--snapshot")))
|
||
(id hurd-vm-configuration-id ;#f or integer [1..]
|
||
(default #f))
|
||
(net-options hurd-vm-configuration-net-options ;list of string
|
||
(thunked)
|
||
(default (hurd-vm-net-options this-record)))
|
||
(secret-root hurd-vm-configuration-secret-root ;string
|
||
(default "/etc/childhurd")))
|
||
|
||
(define (hurd-vm-disk-image config)
|
||
"Return a disk-image for the Hurd according to CONFIG. The secret-service
|
||
is added to the OS specified in CONFIG."
|
||
(let* ((os (secret-service-operating-system
|
||
(hurd-vm-configuration-os config)))
|
||
(disk-size (hurd-vm-configuration-disk-size config))
|
||
(type (lookup-image-type-by-name 'hurd-qcow2))
|
||
(os->image (image-type-constructor type)))
|
||
(system-image
|
||
(image (inherit (os->image os))
|
||
(size disk-size)))))
|
||
|
||
(define (hurd-vm-port config base)
|
||
"Return the forwarded vm port for this childhurd config."
|
||
(let ((id (or (hurd-vm-configuration-id config) 0)))
|
||
(+ base (* 1000 id))))
|
||
(define %hurd-vm-secrets-port 11004)
|
||
(define %hurd-vm-ssh-port 10022)
|
||
(define %hurd-vm-vnc-port 15900)
|
||
|
||
(define (hurd-vm-net-options config)
|
||
`("--device" "rtl8139,netdev=net0"
|
||
"--netdev"
|
||
,(string-append "user,id=net0"
|
||
",hostfwd=tcp:127.0.0.1:"
|
||
(number->string (hurd-vm-port config %hurd-vm-secrets-port))
|
||
"-:1004"
|
||
",hostfwd=tcp:127.0.0.1:"
|
||
(number->string (hurd-vm-port config %hurd-vm-ssh-port))
|
||
"-:2222"
|
||
",hostfwd=tcp:127.0.0.1:"
|
||
(number->string (hurd-vm-port config %hurd-vm-vnc-port))
|
||
"-:5900")))
|
||
|
||
(define (hurd-vm-shepherd-service config)
|
||
"Return a <shepherd-service> for a Hurd in a Virtual Machine with CONFIG."
|
||
|
||
(let ((image (hurd-vm-configuration-image config))
|
||
(qemu (hurd-vm-configuration-qemu config))
|
||
(memory-size (hurd-vm-configuration-memory-size config))
|
||
(options (hurd-vm-configuration-options config))
|
||
(id (hurd-vm-configuration-id config))
|
||
(net-options (hurd-vm-configuration-net-options config))
|
||
(provisions '(hurd-vm childhurd)))
|
||
|
||
(define vm-command
|
||
#~(append (list #$(file-append qemu "/bin/qemu-system-i386")
|
||
"-m" (number->string #$memory-size)
|
||
#$@net-options
|
||
#$@options
|
||
"--hda" #+image
|
||
|
||
;; Cause the service to be respawned if the guest
|
||
;; reboots (it can reboot for instance if it did not
|
||
;; receive valid secrets, or if it crashed.)
|
||
"--no-reboot")
|
||
(if (file-exists? "/dev/kvm")
|
||
'("--enable-kvm")
|
||
'())))
|
||
|
||
(list
|
||
(shepherd-service
|
||
(documentation "Run the Hurd in a Virtual Machine: a Childhurd.")
|
||
(provision (if id
|
||
(map
|
||
(cute symbol-append <>
|
||
(string->symbol (number->string id)))
|
||
provisions)
|
||
provisions))
|
||
(requirement '(loopback networking user-processes))
|
||
(start
|
||
(with-imported-modules
|
||
(source-module-closure '((gnu build secret-service)
|
||
(guix build utils)))
|
||
#~(lambda ()
|
||
(let ((pid (fork+exec-command #$vm-command
|
||
#:user "childhurd"
|
||
;; XXX TODO: use "childhurd" after
|
||
;; updating Shepherd
|
||
#:group "kvm"
|
||
#:environment-variables
|
||
;; QEMU tries to write to /var/tmp
|
||
;; by default.
|
||
'("TMPDIR=/tmp")))
|
||
(port #$(hurd-vm-port config %hurd-vm-secrets-port))
|
||
(root #$(hurd-vm-configuration-secret-root config)))
|
||
(catch #t
|
||
(lambda _
|
||
;; XXX: 'secret-service-send-secrets' won't complete until
|
||
;; the guest has booted and its secret service server is
|
||
;; running, which could take 20+ seconds during which PID 1
|
||
;; is stuck waiting.
|
||
(if (secret-service-send-secrets port root)
|
||
pid
|
||
(begin
|
||
(kill (- pid) SIGTERM)
|
||
#f)))
|
||
(lambda (key . args)
|
||
(kill (- pid) SIGTERM)
|
||
(apply throw key args)))))))
|
||
(modules `((gnu build secret-service)
|
||
(guix build utils)
|
||
,@%default-modules))
|
||
(stop #~(make-kill-destructor))))))
|
||
|
||
(define %hurd-vm-accounts
|
||
(list (user-group (name "childhurd") (system? #t))
|
||
(user-account
|
||
(name "childhurd")
|
||
(group "childhurd")
|
||
(supplementary-groups '("kvm"))
|
||
(comment "Privilege separation user for the childhurd")
|
||
(home-directory "/var/empty")
|
||
(shell (file-append shadow "/sbin/nologin"))
|
||
(system? #t))))
|
||
|
||
(define (initialize-hurd-vm-substitutes)
|
||
"Initialize the Hurd VM's key pair and ACL and store it on the host."
|
||
(define run
|
||
(with-imported-modules '((guix build utils))
|
||
#~(begin
|
||
(use-modules (guix build utils)
|
||
(ice-9 match))
|
||
|
||
(define host-key
|
||
"/etc/guix/signing-key.pub")
|
||
|
||
(define host-acl
|
||
"/etc/guix/acl")
|
||
|
||
(match (command-line)
|
||
((_ guest-config-directory)
|
||
(setenv "GUIX_CONFIGURATION_DIRECTORY"
|
||
guest-config-directory)
|
||
(invoke #+(file-append guix "/bin/guix") "archive"
|
||
"--generate-key")
|
||
|
||
(when (file-exists? host-acl)
|
||
;; Copy the host ACL.
|
||
(copy-file host-acl
|
||
(string-append guest-config-directory
|
||
"/acl")))
|
||
|
||
(when (file-exists? host-key)
|
||
;; Add the host key to the childhurd's ACL.
|
||
(let ((key (open-fdes host-key O_RDONLY)))
|
||
(close-fdes 0)
|
||
(dup2 key 0)
|
||
(execl #+(file-append guix "/bin/guix")
|
||
"guix" "archive" "--authorize"))))))))
|
||
|
||
(program-file "initialize-hurd-vm-substitutes" run))
|
||
|
||
(define (hurd-vm-activation config)
|
||
"Return a gexp to activate the Hurd VM according to CONFIG."
|
||
(with-imported-modules '((guix build utils))
|
||
#~(begin
|
||
(use-modules (guix build utils))
|
||
|
||
(define secret-directory
|
||
#$(hurd-vm-configuration-secret-root config))
|
||
|
||
(define ssh-directory
|
||
(string-append secret-directory "/etc/ssh"))
|
||
|
||
(define guix-directory
|
||
(string-append secret-directory "/etc/guix"))
|
||
|
||
(unless (file-exists? ssh-directory)
|
||
;; Generate SSH host keys under SSH-DIRECTORY.
|
||
(mkdir-p ssh-directory)
|
||
(invoke #$(file-append openssh "/bin/ssh-keygen")
|
||
"-A" "-f" secret-directory))
|
||
|
||
(unless (file-exists? guix-directory)
|
||
(invoke #$(initialize-hurd-vm-substitutes)
|
||
guix-directory)))))
|
||
|
||
(define hurd-vm-service-type
|
||
(service-type
|
||
(name 'hurd-vm)
|
||
(extensions (list (service-extension shepherd-root-service-type
|
||
hurd-vm-shepherd-service)
|
||
(service-extension account-service-type
|
||
(const %hurd-vm-accounts))
|
||
(service-extension activation-service-type
|
||
hurd-vm-activation)))
|
||
(default-value (hurd-vm-configuration))
|
||
(description
|
||
"Provide a virtual machine (VM) running GNU/Hurd, also known as a
|
||
@dfn{childhurd}.")))
|