;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu system vm)
+ #:use-module (guix config)
#:use-module (guix store)
#:use-module (guix derivations)
#:use-module (guix packages)
- #:use-module ((gnu packages base) #:select (%final-inputs guile-final))
+ #:use-module ((gnu packages base) #:select (%final-inputs
+ guile-final
+ coreutils))
+ #:use-module (gnu packages guile)
+ #:use-module (gnu packages bash)
#:use-module (gnu packages qemu)
#:use-module (gnu packages parted)
#:use-module (gnu packages grub)
#:use-module (gnu packages linux-initrd)
#:use-module ((gnu packages make-bootstrap)
#:select (%guile-static-stripped))
+ #:use-module (gnu packages system)
+
+ #:use-module (gnu system shadow)
+ #:use-module (gnu system linux)
+ #:use-module (gnu system grub)
+
+ #:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
+
#:export (expression->derivation-in-linux-vm
- qemu-image))
+ qemu-image
+ system-qemu-image))
\f
;;; Commentary:
(%guile-for-build))
(make-disk-image? #f)
+ (references-graphs #f)
(disk-image-size
(* 100 (expt 2 20))))
"Evaluate EXP in a QEMU virtual machine running LINUX with INITRD. In the
output when the VM terminates.
When MAKE-DISK-IMAGE? is true, then create a QEMU disk image of
-DISK-IMAGE-SIZE bytes and return it."
+DISK-IMAGE-SIZE bytes and return it.
+
+When REFERENCES-GRAPHS is true, it must be a list of file name/store path
+pairs, as for `derivation'. The files containing the reference graphs are
+made available under the /xchg CIFS share."
+ ;; FIXME: Allow use of macros from other modules, as done in
+ ;; `build-expression->derivation'.
+
(define input-alist
(map (match-lambda
- ((input package)
+ ((input (? package? package))
`(,input . ,(package-output store package "out" system)))
- ((input package sub-drv)
- `(,input . ,(package-output store package sub-drv system))))
+ ((input (? package? package) sub-drv)
+ `(,input . ,(package-output store package sub-drv system)))
+ ((input (and (? string?) (? store-path?) file))
+ `(,input . ,file)))
inputs))
(define exp*
(define builder
;; Code that launches the VM that evaluates EXP.
- `(begin
- (use-modules (guix build utils))
+ `(let ()
+ (use-modules (guix build utils)
+ (srfi srfi-1)
+ (ice-9 rdelim))
(let ((out (assoc-ref %outputs "out"))
(cu (string-append (assoc-ref %build-inputs "coreutils")
'(begin))
(mkdir "xchg")
+
+ ;; Copy the reference-graph files under xchg/ so EXP can access it.
+ (begin
+ ,@(match references-graphs
+ (((graph-files . _) ...)
+ (map (lambda (file)
+ `(copy-file ,file
+ ,(string-append "xchg/" file)))
+ graph-files))
+ (#f '())))
+
(and (zero?
(system* qemu "-nographic" "-no-reboot"
"-net" "nic,model=e1000"
("coreutils" ,(->drv coreutils))
("builder" ,user-builder)
,@(map (match-lambda
- ((name package sub-drv ...)
+ ((name (? package? package)
+ sub-drv ...)
`(,name ,(->drv package)
- ,@sub-drv)))
+ ,@sub-drv))
+ ((name (? string? file))
+ `(,name ,file)))
inputs))
#:env-vars env-vars
- #:modules `((guix build utils)
- ,@modules)
- #:guile-for-build guile-for-build)))
+ #:modules (delete-duplicates
+ `((guix build utils)
+ ,@modules))
+ #:guile-for-build guile-for-build
+ #:references-graphs references-graphs)))
(define* (qemu-image store #:key
(name "qemu-image")
(system (%current-system))
(disk-image-size (* 100 (expt 2 20)))
- (linux linux-libre)
- (initrd qemu-initrd)
- (inputs '()))
- "Return a bootable, stand-alone QEMU image."
+ grub-configuration
+ (populate #f)
+ (inputs '())
+ (inputs-to-copy '()))
+ "Return a bootable, stand-alone QEMU image. The returned image is a full
+disk image, with a GRUB installation that uses GRUB-CONFIGURATION as its
+configuration file.
+
+INPUTS-TO-COPY is a list of inputs (as for packages) whose closure is copied
+into the image being built.
+
+When POPULATE is true, it must be the store file name of a Guile script to run
+in the disk image partition once it has been populated with INPUTS-TO-COPY.
+It can be used to provide additional files, such as /etc files."
+ (define input->name+derivation
+ (match-lambda
+ ((name (? package? package))
+ `(,name . ,(derivation->output-path
+ (package-derivation store package system))))
+ ((name (? package? package) sub-drv)
+ `(,name . ,(derivation->output-path
+ (package-derivation store package system)
+ sub-drv)))
+ ((input (and (? string?) (? store-path?) file))
+ `(,input . ,file))))
+
(expression->derivation-in-linux-vm
store "qemu-image"
- `(let ((parted (string-append (assoc-ref %build-inputs "parted")
- "/sbin/parted"))
- (mkfs (string-append (assoc-ref %build-inputs "e2fsprogs")
- "/sbin/mkfs.ext3"))
- (grub (string-append (assoc-ref %build-inputs "grub")
- "/sbin/grub-install"))
- (umount (string-append (assoc-ref %build-inputs "util-linux")
- "/bin/umount")) ; XXX: add to Guile
- (initrd (string-append (assoc-ref %build-inputs "initrd")
- "/initrd"))
- (linux (string-append (assoc-ref %build-inputs "linux")
- "/bzImage"))
- (makedev (lambda (major minor)
- (+ (* major 256) minor))))
-
- ;; GRUB is full of shell scripts.
- (setenv "PATH"
- (string-append (dirname grub) ":"
- (assoc-ref %build-inputs "coreutils") "/bin:"
- (assoc-ref %build-inputs "findutils") "/bin:"
- (assoc-ref %build-inputs "sed") "/bin:"
- (assoc-ref %build-inputs "grep") "/bin:"
- (assoc-ref %build-inputs "gawk") "/bin"))
-
- (display "creating partition table...\n")
- (mknod "/dev/vda" 'block-special #o644 (makedev 8 0))
- (and (zero? (system* parted "/dev/vda" "mklabel" "msdos"
- "mkpart" "primary" "ext2" "1MiB"
- ,(format #f "~aB"
- (- disk-image-size
- (* 5 (expt 2 20))))))
- (begin
- (display "creating ext3 partition...\n")
- (mknod "/dev/vda1" 'block-special #o644 (makedev 8 1))
- (and (zero? (system* mkfs "-F" "/dev/vda1"))
- (begin
- (display "mounting partition...\n")
- (mkdir "/fs")
- (mount "/dev/vda1" "/fs" "ext3")
- (mkdir "/fs/boot")
- (mkdir "/fs/boot/grub")
- (copy-file linux "/fs/boot/bzImage")
- (copy-file initrd "/fs/boot/initrd")
- (call-with-output-file "/fs/boot/grub/grub.cfg"
- (lambda (p)
- (display "
-set default=1
-set timeout=5
-search.file /boot/bzImage
-
-menuentry \"Boot-to-Guile! (GNU System technology preview)\" {
- linux /boot/bzImage --repl
- initrd /boot/initrd
-}" p)))
- (and (zero?
- (system* grub "--no-floppy"
- "--boot-directory" "/fs/boot"
- "/dev/vda"))
- (zero?
- (system* umount "/fs"))
- (reboot)))))))
+ `(let ()
+ (use-modules (ice-9 rdelim)
+ (srfi srfi-1)
+ (guix build utils)
+ (guix build linux-initrd))
+
+ (let ((parted (string-append (assoc-ref %build-inputs "parted")
+ "/sbin/parted"))
+ (mkfs (string-append (assoc-ref %build-inputs "e2fsprogs")
+ "/sbin/mkfs.ext3"))
+ (grub (string-append (assoc-ref %build-inputs "grub")
+ "/sbin/grub-install"))
+ (umount (string-append (assoc-ref %build-inputs "util-linux")
+ "/bin/umount")) ; XXX: add to Guile
+ (grub.cfg (assoc-ref %build-inputs "grub.cfg")))
+
+ (define (read-reference-graph port)
+ ;; Return a list of store paths from the reference graph at PORT.
+ ;; The data at PORT is the format produced by #:references-graphs.
+ (let loop ((line (read-line port))
+ (result '()))
+ (cond ((eof-object? line)
+ (delete-duplicates result))
+ ((string-prefix? "/" line)
+ (loop (read-line port)
+ (cons line result)))
+ (else
+ (loop (read-line port)
+ result)))))
+
+ (define (things-to-copy)
+ ;; Return the list of store files to copy to the image.
+ (define (graph-from-file file)
+ (call-with-input-file file
+ read-reference-graph))
+
+ ,(match inputs-to-copy
+ (((graph-files . _) ...)
+ `(let* ((graph-files ',(map (cut string-append "/xchg/" <>)
+ graph-files))
+ (paths (append-map graph-from-file graph-files)))
+ (delete-duplicates paths)))
+ (#f ''())))
+
+ ;; GRUB is full of shell scripts.
+ (setenv "PATH"
+ (string-append (dirname grub) ":"
+ (assoc-ref %build-inputs "coreutils") "/bin:"
+ (assoc-ref %build-inputs "findutils") "/bin:"
+ (assoc-ref %build-inputs "sed") "/bin:"
+ (assoc-ref %build-inputs "grep") "/bin:"
+ (assoc-ref %build-inputs "gawk") "/bin"))
+
+ (display "creating partition table...\n")
+ (and (zero? (system* parted "/dev/vda" "mklabel" "msdos"
+ "mkpart" "primary" "ext2" "1MiB"
+ ,(format #f "~aB"
+ (- disk-image-size
+ (* 5 (expt 2 20))))))
+ (begin
+ (display "creating ext3 partition...\n")
+ (and (zero? (system* mkfs "-F" "/dev/vda1"))
+ (begin
+ (display "mounting partition...\n")
+ (mkdir "/fs")
+ (mount "/dev/vda1" "/fs" "ext3")
+ (mkdir-p "/fs/boot/grub")
+ (symlink grub.cfg "/fs/boot/grub/grub.cfg")
+
+ ;; Populate the image's store.
+ (mkdir-p (string-append "/fs" ,%store-directory))
+ (for-each (lambda (thing)
+ (copy-recursively thing
+ (string-append "/fs"
+ thing)))
+ (cons grub.cfg (things-to-copy)))
+
+ ;; Populate /dev.
+ (make-essential-device-nodes #:root "/fs")
+
+ (and=> (assoc-ref %build-inputs "populate")
+ (lambda (populate)
+ (chdir "/fs")
+ (primitive-load populate)
+ (chdir "/")))
+
+ (display "clearing file timestamps...\n")
+ (for-each (lambda (file)
+ (let ((s (lstat file)))
+ ;; XXX: Guile uses libc's 'utime' function
+ ;; (not 'futime'), so the timestamp of
+ ;; symlinks cannot be changed, and there
+ ;; are symlinks here pointing to
+ ;; /nix/store, which is the host,
+ ;; read-only store.
+ (unless (eq? (stat:type s) 'symlink)
+ (utime file 0 0 0 0))))
+ (find-files "/fs" ".*"))
+
+ (and (zero?
+ (system* grub "--no-floppy"
+ "--boot-directory" "/fs/boot"
+ "/dev/vda"))
+ (zero? (system* umount "/fs"))
+ (reboot))))))))
#:system system
#:inputs `(("parted" ,parted)
("grub" ,grub)
("e2fsprogs" ,e2fsprogs)
- ("linux" ,linux-libre)
- ("initrd" ,qemu-initrd)
+ ("grub.cfg" ,grub-configuration)
;; For shell scripts.
("sed" ,(car (assoc-ref %final-inputs "sed")))
("coreutils" ,(car (assoc-ref %final-inputs "coreutils")))
("findutils" ,(car (assoc-ref %final-inputs "findutils")))
("gawk" ,(car (assoc-ref %final-inputs "gawk")))
- ("util-linux" ,util-linux))
+ ("util-linux" ,util-linux)
+
+ ,@(if populate
+ `(("populate" ,populate))
+ '())
+
+ ,@inputs-to-copy)
#:make-disk-image? #t
- #:disk-image-size disk-image-size))
+ #:disk-image-size disk-image-size
+ #:references-graphs (map input->name+derivation inputs-to-copy)
+ #:modules '((guix build utils)
+ (guix build linux-initrd))))
\f
;;;
-;;; Guile 2.0 potluck examples.
+;;; Stand-alone VM image.
;;;
-(define (example1)
- (let ((store #f))
- (dynamic-wind
- (lambda ()
- (set! store (open-connection)))
- (lambda ()
- (parameterize ((%guile-for-build (package-derivation store guile-final)))
- (expression->derivation-in-linux-vm
- store "vm-test"
- '(begin
- (display "hello from boot!\n")
- (call-with-output-file "/xchg/hello"
- (lambda (p)
- (display "world" p)))))))
- (lambda ()
- (close-connection store)))))
-
-(define (example2)
- (let ((store #f))
- (dynamic-wind
- (lambda ()
- (set! store (open-connection)))
- (lambda ()
- (parameterize ((%guile-for-build (package-derivation store guile-final)))
- (qemu-image store #:disk-image-size (* 30 (expt 2 20)))))
- (lambda ()
- (close-connection store)))))
+(define (system-qemu-image store)
+ "Return the derivation of a QEMU image of the GNU system."
+ (define %pam-services
+ ;; Services known to PAM.
+ (list %pam-other-services
+ (unix-pam-service "login" #:allow-empty-passwords? #t)))
+
+ (parameterize ((%guile-for-build (package-derivation store guile-final)))
+ (let* ((bash-drv (package-derivation store bash))
+ (bash-file (string-append (derivation->output-path bash-drv)
+ "/bin/bash"))
+ (accounts (list (vector "root" "" 0 0 "System administrator"
+ "/" bash-file)))
+ (passwd (passwd-file store accounts))
+ (shadow (passwd-file store accounts #:shadow? #t))
+ (pam.d-drv (pam-services->directory store %pam-services))
+ (pam.d (derivation->output-path pam.d-drv))
+ (populate
+ (add-text-to-store store "populate-qemu-image"
+ (object->string
+ `(begin
+ (mkdir-p "etc")
+ (symlink ,shadow "etc/shadow")
+ (symlink ,passwd "etc/passwd")
+ (symlink "/dev/null"
+ "etc/login.defs")
+ (symlink ,pam.d "etc/pam.d")
+ (mkdir-p "var/run")))
+ (list passwd)))
+ (out (derivation->output-path
+ (package-derivation store mingetty)))
+ (getty (string-append out "/sbin/mingetty"))
+ (iu-drv (package-derivation store inetutils))
+ (syslogd (string-append (derivation->output-path iu-drv)
+ "/libexec/syslogd"))
+ (boot (add-text-to-store store "boot"
+ (object->string
+ `(begin
+ ;; Become the session leader,
+ ;; so that mingetty can do
+ ;; 'TIOCSCTTY'.
+ (setsid)
+
+ (when (zero? (primitive-fork))
+ (format #t "starting syslogd as ~a~%"
+ (getpid))
+ (execl ,syslogd "syslogd"))
+
+ ;; Directly into mingetty. XXX
+ ;; (execl ,getty "mingetty"
+ ;; "--noclear" "tty1")
+ (execl ,bash-file "bash")))
+ (list out)))
+ (entries (list (menu-entry
+ (label "Boot-to-Guile! (GNU System technology preview)")
+ (linux linux-libre)
+ (linux-arguments `("--root=/dev/vda1"
+ ,(string-append "--load=" boot)))
+ (initrd gnu-system-initrd))))
+ (grub.cfg (grub-configuration-file store entries)))
+ (build-derivations store (list pam.d-drv))
+ (qemu-image store
+ #:grub-configuration grub.cfg
+ #:populate populate
+ #:disk-image-size (* 400 (expt 2 20))
+ #:inputs-to-copy `(("boot" ,boot)
+ ("linux" ,linux-libre)
+ ("initrd" ,gnu-system-initrd)
+ ("coreutils" ,coreutils)
+ ("bash" ,bash)
+ ("guile" ,guile-2.0)
+ ("mingetty" ,mingetty)
+ ("inetutils" ,inetutils)
+
+ ;; Configuration.
+ ("etc-pam.d" ,pam.d)
+ ("etc-passwd" ,passwd)
+ ("etc-shadow" ,shadow))))))
;;; vm.scm ends here
HCoop / jackhill / guix / guix.git / blobdiff