mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-23 21:17:11 -05:00
vm: Make the list of partitions to build a parameter.
* gnu/build/vm.scm (<partition>): New record type. (fold2): New procedure. (initialize-partition-table): Remove #:bootable? and 'partition-size' parameters. Add 'partitions' parameter. Invoke 'parted' with '--script'. (initialize-root-partition): Remove. (initialize-partition, root-partition-initializer): New procedures. (initialize-hard-disk): Remove #:system-directory, #:disk-image-size, #:file-system-type, #:file-system-label, #:closures, #:copy-closures?, #:bootable?, and #:register-closures? parameters. Add #:partitions. Rewrite to use 'initialize-partition' for each item of PARTITIONS. * gnu/system/vm.scm (expression->derivation-in-linux-vm): Add (guix records) to #:modules default value. (qemu-image): Adjust accordingly.
This commit is contained in:
Ludovic Courtès
parent
5b9da1f955
commit
72b891e50e
2 changed files with 181 additions and 101 deletions
253
gnu/build/vm.scm
253
gnu/build/vm.scm
|
|
@ -21,13 +21,26 @@ (define-module (gnu build vm)
|
|||
#:use-module (guix build store-copy)
|
||||
#:use-module (gnu build linux-boot)
|
||||
#:use-module (gnu build install)
|
||||
#:use-module (guix records)
|
||||
#:use-module (ice-9 match)
|
||||
#:use-module (ice-9 regex)
|
||||
#:use-module (srfi srfi-1)
|
||||
#:use-module (srfi srfi-9)
|
||||
#:use-module (srfi srfi-26)
|
||||
#:export (qemu-command
|
||||
load-in-linux-vm
|
||||
format-partition
|
||||
initialize-root-partition
|
||||
|
||||
partition
|
||||
partition?
|
||||
partition-device
|
||||
partition-size
|
||||
partition-file-system
|
||||
partition-label
|
||||
partition-bootable?
|
||||
partition-initializer
|
||||
|
||||
root-partition-initializer
|
||||
initialize-partition-table
|
||||
initialize-hard-disk))
|
||||
|
||||
|
|
@ -110,24 +123,84 @@ (define image-file
|
|||
(mkdir output)
|
||||
(copy-recursively "xchg" output))))
|
||||
|
||||
(define* (initialize-partition-table device partition-size
|
||||
|
||||
;;;
|
||||
;;; Partitions.
|
||||
;;;
|
||||
|
||||
(define-record-type* <partition> partition make-partition
|
||||
partition?
|
||||
(device partition-device (default #f))
|
||||
(size partition-size)
|
||||
(file-system partition-file-system (default "ext4"))
|
||||
(label partition-label (default #f))
|
||||
(bootable? partition-bootable? (default #f))
|
||||
(initializer partition-initializer (default (const #t))))
|
||||
|
||||
(define (fold2 proc seed1 seed2 lst) ;TODO: factorize
|
||||
"Like `fold', but with a single list and two seeds."
|
||||
(let loop ((result1 seed1)
|
||||
(result2 seed2)
|
||||
(lst lst))
|
||||
(if (null? lst)
|
||||
(values result1 result2)
|
||||
(call-with-values
|
||||
(lambda () (proc (car lst) result1 result2))
|
||||
(lambda (result1 result2)
|
||||
(loop result1 result2 (cdr lst)))))))
|
||||
|
||||
(define* (initialize-partition-table device partitions
|
||||
#:key
|
||||
bootable?
|
||||
(label-type "msdos")
|
||||
(offset (expt 2 20)))
|
||||
"Create on DEVICE a partition table of type LABEL-TYPE, with a single
|
||||
partition of PARTITION-SIZE bytes starting at OFFSET bytes. When BOOTABLE? is
|
||||
true, set the bootable flag on the partition. Return #t on success."
|
||||
(format #t "creating partition table with a ~a B partition...\n"
|
||||
partition-size)
|
||||
(unless (zero? (apply system* "parted" device "mklabel" label-type
|
||||
"mkpart" "primary" "ext2"
|
||||
(format #f "~aB" offset)
|
||||
(format #f "~aB" partition-size)
|
||||
(if bootable?
|
||||
'("set" "1" "boot" "on")
|
||||
'())))
|
||||
(error "failed to create partition table")))
|
||||
"Create on DEVICE a partition table of type LABEL-TYPE, containing the given
|
||||
PARTITIONS (a list of <partition> objects), starting at OFFSET bytes. On
|
||||
success, return PARTITIONS with their 'device' field changed to reflect their
|
||||
actual /dev name based on DEVICE."
|
||||
(define (partition-options part offset index)
|
||||
(cons* "mkpart" "primary" "ext2"
|
||||
(format #f "~aB" offset)
|
||||
(format #f "~aB" (+ offset (partition-size part)))
|
||||
(if (partition-bootable? part)
|
||||
`("set" ,(number->string index) "boot" "on")
|
||||
'())))
|
||||
|
||||
(define (options partitions offset)
|
||||
(let loop ((partitions partitions)
|
||||
(offset offset)
|
||||
(index 1)
|
||||
(result '()))
|
||||
(match partitions
|
||||
(()
|
||||
(concatenate (reverse result)))
|
||||
((head tail ...)
|
||||
(loop tail
|
||||
;; Leave one sector (512B) between partitions to placate
|
||||
;; Parted.
|
||||
(+ offset 512 (partition-size head))
|
||||
(+ 1 index)
|
||||
(cons (partition-options head offset index)
|
||||
result))))))
|
||||
|
||||
(format #t "creating partition table with ~a partitions...\n"
|
||||
(length partitions))
|
||||
(unless (zero? (apply system* "parted" "--script"
|
||||
device "mklabel" label-type
|
||||
(options partitions offset)))
|
||||
(error "failed to create partition table"))
|
||||
|
||||
;; Set the 'device' field of each partition.
|
||||
(reverse
|
||||
(fold2 (lambda (part result index)
|
||||
(values (cons (partition
|
||||
(inherit part)
|
||||
(device (string-append device
|
||||
(number->string index))))
|
||||
result)
|
||||
(+ 1 index)))
|
||||
'()
|
||||
1
|
||||
partitions)))
|
||||
|
||||
(define MS_BIND 4096) ; <sys/mounts.h> again!
|
||||
|
||||
|
|
@ -143,40 +216,67 @@ (define* (format-partition partition type
|
|||
'())))
|
||||
(error "failed to create partition")))
|
||||
|
||||
(define* (initialize-root-partition target-directory
|
||||
#:key copy-closures? register-closures?
|
||||
closures system-directory)
|
||||
"Initialize the root partition mounted at TARGET-DIRECTORY."
|
||||
(define target-store
|
||||
(string-append target-directory (%store-directory)))
|
||||
(define (initialize-partition partition)
|
||||
"Format PARTITION, a <partition> object with a non-#f 'device' field, mount
|
||||
it, run its initializer, and unmount it."
|
||||
(let ((target "/fs"))
|
||||
(format-partition (partition-device partition)
|
||||
(partition-file-system partition)
|
||||
#:label (partition-label partition))
|
||||
(mkdir-p target)
|
||||
(mount (partition-device partition) target
|
||||
(partition-file-system partition))
|
||||
|
||||
(when copy-closures?
|
||||
;; Populate the store.
|
||||
(populate-store (map (cut string-append "/xchg/" <>) closures)
|
||||
target-directory))
|
||||
((partition-initializer partition) target)
|
||||
|
||||
;; Populate /dev.
|
||||
(make-essential-device-nodes #:root target-directory)
|
||||
(umount target)
|
||||
partition))
|
||||
|
||||
;; Optionally, register the inputs in the image's store.
|
||||
(when register-closures?
|
||||
(unless copy-closures?
|
||||
;; XXX: 'guix-register' wants to palpate the things it registers, so
|
||||
;; bind-mount the store on the target.
|
||||
(mkdir-p target-store)
|
||||
(mount (%store-directory) target-store "" MS_BIND))
|
||||
(define* (root-partition-initializer #:key (closures '())
|
||||
copy-closures?
|
||||
(register-closures? #t)
|
||||
system-directory)
|
||||
"Return a procedure to initialize a root partition.
|
||||
|
||||
(display "registering closures...\n")
|
||||
(for-each (lambda (closure)
|
||||
(register-closure target-directory
|
||||
(string-append "/xchg/" closure)))
|
||||
closures)
|
||||
(unless copy-closures?
|
||||
(umount target-store)))
|
||||
If REGISTER-CLOSURES? is true, register all of CLOSURES is the partition's
|
||||
store. If COPY-CLOSURES? is true, copy all of CLOSURES to the partition.
|
||||
SYSTEM-DIRECTORY is the name of the directory of the 'system' derivation."
|
||||
(lambda (target)
|
||||
(define target-store
|
||||
(string-append target (%store-directory)))
|
||||
|
||||
;; Add the non-store directories and files.
|
||||
(display "populating...\n")
|
||||
(populate-root-file-system system-directory target-directory))
|
||||
(when copy-closures?
|
||||
;; Populate the store.
|
||||
(populate-store (map (cut string-append "/xchg/" <>) closures)
|
||||
target))
|
||||
|
||||
;; Populate /dev.
|
||||
(make-essential-device-nodes #:root target)
|
||||
|
||||
;; Optionally, register the inputs in the image's store.
|
||||
(when register-closures?
|
||||
(unless copy-closures?
|
||||
;; XXX: 'guix-register' wants to palpate the things it registers, so
|
||||
;; bind-mount the store on the target.
|
||||
(mkdir-p target-store)
|
||||
(mount (%store-directory) target-store "" MS_BIND))
|
||||
|
||||
(display "registering closures...\n")
|
||||
(for-each (lambda (closure)
|
||||
(register-closure target
|
||||
(string-append "/xchg/" closure)))
|
||||
closures)
|
||||
(unless copy-closures?
|
||||
(umount target-store)))
|
||||
|
||||
;; Add the non-store directories and files.
|
||||
(display "populating...\n")
|
||||
(populate-root-file-system system-directory target)
|
||||
|
||||
;; 'guix-register' resets timestamps and everything, so no need to do it
|
||||
;; once more in that case.
|
||||
(unless register-closures?
|
||||
(reset-timestamps target))))
|
||||
|
||||
(define (register-grub.cfg-root target grub.cfg)
|
||||
"On file system TARGET, register GRUB.CFG as a GC root."
|
||||
|
|
@ -186,56 +286,29 @@ (define (register-grub.cfg-root target grub.cfg)
|
|||
|
||||
(define* (initialize-hard-disk device
|
||||
#:key
|
||||
system-directory
|
||||
grub.cfg
|
||||
disk-image-size
|
||||
(file-system-type "ext4")
|
||||
file-system-label
|
||||
(closures '())
|
||||
copy-closures?
|
||||
(bootable? #t)
|
||||
(register-closures? #t))
|
||||
"Initialize DEVICE, a disk of DISK-IMAGE-SIZE bytes, with a FILE-SYSTEM-TYPE
|
||||
partition with (optionally) FILE-SYSTEM-LABEL as its volume name, and with
|
||||
GRUB installed. When BOOTABLE? is true, set the bootable flag on that
|
||||
partition.
|
||||
(partitions '()))
|
||||
"Initialize DEVICE as a disk containing all the <partition> objects listed
|
||||
in PARTITIONS, and using GRUB.CFG as its bootloader configuration file.
|
||||
|
||||
If REGISTER-CLOSURES? is true, register all of CLOSURES is the partition's
|
||||
store. If COPY-CLOSURES? is true, copy all of CLOSURES to the partition.
|
||||
SYSTEM-DIRECTORY is the name of the directory of the 'system' derivation."
|
||||
(define target-directory
|
||||
"/fs")
|
||||
Each partition is initialized by calling its 'initializer' procedure,
|
||||
passing it a directory name where it is mounted."
|
||||
(let* ((partitions (initialize-partition-table device partitions))
|
||||
(root (find partition-bootable? partitions))
|
||||
(target "/fs"))
|
||||
(unless root
|
||||
(error "no bootable partition specified" partitions))
|
||||
|
||||
(define partition
|
||||
(string-append device "1"))
|
||||
(for-each initialize-partition partitions)
|
||||
|
||||
(initialize-partition-table device
|
||||
(- disk-image-size (* 5 (expt 2 20)))
|
||||
#:bootable? bootable?)
|
||||
(display "mounting root partition...\n")
|
||||
(mkdir-p target)
|
||||
(mount (partition-device root) target (partition-file-system root))
|
||||
(install-grub grub.cfg device target)
|
||||
|
||||
(format-partition partition file-system-type
|
||||
#:label file-system-label)
|
||||
;; Register GRUB.CFG as a GC root.
|
||||
(register-grub.cfg-root target grub.cfg)
|
||||
|
||||
(display "mounting partition...\n")
|
||||
(mkdir target-directory)
|
||||
(mount partition target-directory file-system-type)
|
||||
|
||||
(initialize-root-partition target-directory
|
||||
#:system-directory system-directory
|
||||
#:copy-closures? copy-closures?
|
||||
#:register-closures? register-closures?
|
||||
#:closures closures)
|
||||
|
||||
(install-grub grub.cfg device target-directory)
|
||||
|
||||
;; Register GRUB.CFG as a GC root.
|
||||
(register-grub.cfg-root target-directory grub.cfg)
|
||||
|
||||
;; 'guix-register' resets timestamps and everything, so no need to do it
|
||||
;; once more in that case.
|
||||
(unless register-closures?
|
||||
(reset-timestamps target-directory))
|
||||
|
||||
(umount target-directory))
|
||||
(umount target)))
|
||||
|
||||
;;; vm.scm ends here
|
||||
|
|
|
|||
|
|
@ -101,6 +101,7 @@ (define* (expression->derivation-in-linux-vm name exp
|
|||
(gnu build linux-modules)
|
||||
(gnu build file-systems)
|
||||
(guix elf)
|
||||
(guix records)
|
||||
(guix build utils)
|
||||
(guix build syscalls)
|
||||
(guix build store-copy)))
|
||||
|
|
@ -227,18 +228,24 @@ (define* (qemu-image #:key
|
|||
|
||||
(set-path-environment-variable "PATH" '("bin" "sbin") inputs)
|
||||
|
||||
(let ((graphs '#$(match inputs
|
||||
(((names . _) ...)
|
||||
names))))
|
||||
(let* ((graphs '#$(match inputs
|
||||
(((names . _) ...)
|
||||
names)))
|
||||
(initialize (root-partition-initializer
|
||||
#:closures graphs
|
||||
#:copy-closures? #$copy-inputs?
|
||||
#:register-closures? #$register-closures?
|
||||
#:system-directory #$os-derivation))
|
||||
(partitions (list (partition
|
||||
(size #$(- disk-image-size
|
||||
(* 10 (expt 2 20))))
|
||||
(label #$file-system-label)
|
||||
(file-system #$file-system-type)
|
||||
(bootable? #t)
|
||||
(initializer initialize)))))
|
||||
(initialize-hard-disk "/dev/vda"
|
||||
#:system-directory #$os-derivation
|
||||
#:grub.cfg #$grub-configuration
|
||||
#:closures graphs
|
||||
#:copy-closures? #$copy-inputs?
|
||||
#:register-closures? #$register-closures?
|
||||
#:disk-image-size #$disk-image-size
|
||||
#:file-system-type #$file-system-type
|
||||
#:file-system-label #$file-system-label)
|
||||
#:partitions partitions
|
||||
#:grub.cfg #$grub-configuration)
|
||||
(reboot))))
|
||||
#:system system
|
||||
#:make-disk-image? #t
|
||||
|
|
|
|||
Loading…
Reference in a new issue