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gnu: vm: `qemu-image' can copy store closures into the target image.
* gnu/system/vm.scm (qemu-image): Add #:inputs-to-copy and #:boot-expression parameters. Honor them. Append INPUTS-TO-COPY to the #:inputs argument for `expression->derivation-in-linux-vm'. (example2): Add #:boot-expression and #:inputs-to-copy arguments.
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Ludovic Courtès
parent
4c0f0673b2
commit
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1 changed files with 145 additions and 59 deletions
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@ -17,6 +17,7 @@
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu system vm)
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#:use-module (guix config)
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#:use-module (guix store)
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#:use-module (guix derivations)
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#:use-module (guix packages)
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@ -28,6 +29,8 @@ (define-module (gnu system vm)
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#:use-module (gnu packages linux-initrd)
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#:use-module ((gnu packages make-bootstrap)
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#:select (%guile-static-stripped))
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#:use-module ((gnu packages system)
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#:select (shadow))
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-26)
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#:use-module (ice-9 match)
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@ -175,77 +178,150 @@ (define* (qemu-image store #:key
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(disk-image-size (* 100 (expt 2 20)))
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(linux linux-libre)
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(initrd qemu-initrd)
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(inputs '()))
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"Return a bootable, stand-alone QEMU image."
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(inputs '())
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(inputs-to-copy '())
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(boot-expression #f))
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"Return a bootable, stand-alone QEMU image.
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INPUTS-TO-COPY is a list of inputs (as for packages) whose closure is copied
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into the image being built.
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When BOOT-EXPRESSION is true, it is an expression to evaluate when the basic
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initialization is done. A typical example is `(execl ...)' to launch the init
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process."
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(define input->name+derivation
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(match-lambda
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((name (? package? package))
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`(,name . ,(derivation-path->output-path
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(package-derivation store package system))))
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((name (? package? package) sub-drv)
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`(,name . ,(derivation-path->output-path
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(package-derivation store package system)
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sub-drv)))))
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(define loader
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(and boot-expression
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(add-text-to-store store "loader"
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(object->string boot-expression)
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'())))
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(expression->derivation-in-linux-vm
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store "qemu-image"
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`(let ((parted (string-append (assoc-ref %build-inputs "parted")
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"/sbin/parted"))
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(mkfs (string-append (assoc-ref %build-inputs "e2fsprogs")
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"/sbin/mkfs.ext3"))
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(grub (string-append (assoc-ref %build-inputs "grub")
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"/sbin/grub-install"))
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(umount (string-append (assoc-ref %build-inputs "util-linux")
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"/bin/umount")) ; XXX: add to Guile
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(initrd (string-append (assoc-ref %build-inputs "initrd")
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"/initrd"))
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(linux (string-append (assoc-ref %build-inputs "linux")
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"/bzImage"))
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(makedev (lambda (major minor)
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(+ (* major 256) minor))))
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`(let ()
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(use-modules (ice-9 rdelim)
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(srfi srfi-1)
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(guix build utils))
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;; GRUB is full of shell scripts.
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(setenv "PATH"
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(string-append (dirname grub) ":"
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(assoc-ref %build-inputs "coreutils") "/bin:"
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(assoc-ref %build-inputs "findutils") "/bin:"
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(assoc-ref %build-inputs "sed") "/bin:"
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(assoc-ref %build-inputs "grep") "/bin:"
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(assoc-ref %build-inputs "gawk") "/bin"))
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(let ((parted (string-append (assoc-ref %build-inputs "parted")
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"/sbin/parted"))
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(mkfs (string-append (assoc-ref %build-inputs "e2fsprogs")
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"/sbin/mkfs.ext3"))
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(grub (string-append (assoc-ref %build-inputs "grub")
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"/sbin/grub-install"))
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(umount (string-append (assoc-ref %build-inputs "util-linux")
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"/bin/umount")) ; XXX: add to Guile
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(initrd (string-append (assoc-ref %build-inputs "initrd")
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"/initrd"))
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(linux (string-append (assoc-ref %build-inputs "linux")
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"/bzImage"))
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(makedev (lambda (major minor)
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(+ (* major 256) minor))))
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(display "creating partition table...\n")
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(mknod "/dev/vda" 'block-special #o644 (makedev 8 0))
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(and (zero? (system* parted "/dev/vda" "mklabel" "msdos"
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"mkpart" "primary" "ext2" "1MiB"
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,(format #f "~aB"
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(- disk-image-size
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(* 5 (expt 2 20))))))
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(begin
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(display "creating ext3 partition...\n")
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(mknod "/dev/vda1" 'block-special #o644 (makedev 8 1))
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(and (zero? (system* mkfs "-F" "/dev/vda1"))
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(begin
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(display "mounting partition...\n")
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(mkdir "/fs")
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(mount "/dev/vda1" "/fs" "ext3")
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(mkdir "/fs/boot")
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(mkdir "/fs/boot/grub")
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(copy-file linux "/fs/boot/bzImage")
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(copy-file initrd "/fs/boot/initrd")
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(call-with-output-file "/fs/boot/grub/grub.cfg"
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(lambda (p)
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(display "
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(define (read-reference-graph port)
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;; Return a list of store paths from the reference graph at PORT.
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;; The data at PORT is the format produced by #:references-graphs.
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(let loop ((line (read-line port))
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(result '()))
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(cond ((eof-object? line)
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(delete-duplicates result))
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((string-prefix? "/" line)
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(loop (read-line port)
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(cons line result)))
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(else
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(loop (read-line port)
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result)))))
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(define (things-to-copy)
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;; Return the list of store files to copy to the image.
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(define (graph-from-file file)
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(call-with-input-file file
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read-reference-graph))
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,(match inputs-to-copy
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(((graph-files . _) ...)
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`(let* ((graph-files ',(map (cut string-append "/xchg/" <>)
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graph-files))
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(paths (append-map graph-from-file graph-files)))
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(delete-duplicates paths)))
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(#f ''())))
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;; GRUB is full of shell scripts.
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(setenv "PATH"
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(string-append (dirname grub) ":"
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(assoc-ref %build-inputs "coreutils") "/bin:"
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(assoc-ref %build-inputs "findutils") "/bin:"
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(assoc-ref %build-inputs "sed") "/bin:"
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(assoc-ref %build-inputs "grep") "/bin:"
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(assoc-ref %build-inputs "gawk") "/bin"))
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(display "creating partition table...\n")
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(mknod "/dev/vda" 'block-special #o644 (makedev 8 0))
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(and (zero? (system* parted "/dev/vda" "mklabel" "msdos"
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"mkpart" "primary" "ext2" "1MiB"
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,(format #f "~aB"
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(- disk-image-size
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(* 5 (expt 2 20))))))
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(begin
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(display "creating ext3 partition...\n")
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(mknod "/dev/vda1" 'block-special #o644 (makedev 8 1))
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(and (zero? (system* mkfs "-F" "/dev/vda1"))
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(begin
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(display "mounting partition...\n")
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(mkdir "/fs")
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(mount "/dev/vda1" "/fs" "ext3")
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(mkdir-p "/fs/boot/grub")
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(copy-file linux "/fs/boot/bzImage")
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(copy-file initrd "/fs/boot/initrd")
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;; Populate the image's store.
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(mkdir-p (string-append "/fs" ,%store-directory))
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(for-each (lambda (thing)
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(copy-recursively thing
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(string-append "/fs"
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thing)))
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(things-to-copy))
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(call-with-output-file "/fs/boot/grub/grub.cfg"
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(lambda (p)
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(format p "
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set default=1
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set timeout=5
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search.file /boot/bzImage
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menuentry \"Boot-to-Guile! (GNU System technology preview)\" {
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linux /boot/bzImage --repl
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linux /boot/bzImage --root=/dev/vda1 ~a
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initrd /boot/initrd
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}" p)))
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(and (zero?
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(system* grub "--no-floppy"
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"--boot-directory" "/fs/boot"
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"/dev/vda"))
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(zero?
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(system* umount "/fs"))
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(reboot)))))))
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}"
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,(if loader
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(string-append "--load=" loader)
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""))))
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(and (zero?
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(system* grub "--no-floppy"
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"--boot-directory" "/fs/boot"
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"/dev/vda"))
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(zero?
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(system* umount "/fs"))
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(reboot))))))))
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#:system system
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#:inputs `(("parted" ,parted)
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("grub" ,grub)
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("e2fsprogs" ,e2fsprogs)
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("linux" ,linux-libre)
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("initrd" ,qemu-initrd)
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("initrd" ,initrd)
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,@(if loader
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`(("loader" ,loader))
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'())
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;; For shell scripts.
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("sed" ,(car (assoc-ref %final-inputs "sed")))
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@ -253,9 +329,13 @@ (define* (qemu-image store #:key
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("coreutils" ,(car (assoc-ref %final-inputs "coreutils")))
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("findutils" ,(car (assoc-ref %final-inputs "findutils")))
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("gawk" ,(car (assoc-ref %final-inputs "gawk")))
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("util-linux" ,util-linux))
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("util-linux" ,util-linux)
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,@inputs-to-copy)
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#:make-disk-image? #t
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#:disk-image-size disk-image-size))
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#:disk-image-size disk-image-size
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#:references-graphs (map input->name+derivation inputs-to-copy)
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#:modules '((guix build utils))))
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;;;
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@ -286,7 +366,13 @@ (define (example2)
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(set! store (open-connection)))
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(lambda ()
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(parameterize ((%guile-for-build (package-derivation store guile-final)))
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(qemu-image store #:disk-image-size (* 30 (expt 2 20)))))
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(let* ((drv (package-derivation store shadow))
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(login (string-append (derivation-path->output-path drv)
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"/bin/login")))
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(qemu-image store
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#:boot-expression `(execl ,login "login" "tty1")
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#:disk-image-size (* 400 (expt 2 20))
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#:inputs-to-copy `(("shadow" ,shadow))))))
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(lambda ()
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(close-connection store)))))
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