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-rw-r--r--gnu/system/image.scm90
-rw-r--r--gnu/system/images/hurd.scm29
2 files changed, 96 insertions, 23 deletions
diff --git a/gnu/system/image.scm b/gnu/system/image.scm
index 0f2fb62a6b..c81054f847 100644
--- a/gnu/system/image.scm
+++ b/gnu/system/image.scm
@@ -18,6 +18,8 @@
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu system image)
+ #:use-module (guix diagnostics)
+ #:use-module (guix discovery)
#:use-module (guix gexp)
#:use-module (guix modules)
#:use-module (guix monads)
@@ -64,9 +66,16 @@
efi-disk-image
iso9660-image
- find-image
+ image-with-os
+ raw-image-type
+ iso-image-type
+ uncompressed-iso-image-type
+
+ image-with-label
system-image
- image-with-label))
+
+ %image-types
+ lookup-image-type-by-name))
;;;
@@ -114,6 +123,37 @@
(flags '(boot)))))))
+;;;
+;;; Images types.
+;;;
+
+(define-syntax-rule (image-with-os base-image os)
+ "Return an image inheriting from BASE-IMAGE, with the operating-system field
+set to the given OS."
+ (image
+ (inherit base-image)
+ (operating-system os)))
+
+(define raw-image-type
+ (image-type
+ (name 'raw)
+ (constructor (cut image-with-os efi-disk-image <>))))
+
+(define iso-image-type
+ (image-type
+ (name 'iso9660)
+ (constructor (cut image-with-os iso9660-image <>))))
+
+(define uncompressed-iso-image-type
+ (image-type
+ (name 'uncompressed-iso9660)
+ (constructor (cut image-with-os
+ (image
+ (inherit iso9660-image)
+ (compression? #f))
+ <>))))
+
+
;;
;; Helpers.
;;
@@ -442,7 +482,7 @@ returns an image record where the first partition's label is set to <label>."
image-size)
(else root-size))))
-(define* (image-with-os base-image os)
+(define* (image-with-os* base-image os)
"Return an image based on BASE-IMAGE but with the operating-system field set
to OS. Also set the UUID and the size of the root partition."
(define root-file-system
@@ -523,7 +563,7 @@ image, depending on IMAGE format."
(with-parameters ((%current-target-system target))
(let* ((os (operating-system-for-image image))
- (image* (image-with-os image os))
+ (image* (image-with-os* image os))
(image-format (image-format image))
(register-closures? (has-guix-service-type? os))
(bootcfg (operating-system-bootcfg os))
@@ -556,18 +596,34 @@ image, depending on IMAGE format."
#:grub-mkrescue-environment
'(("MKRESCUE_SED_MODE" . "mbr_only"))))))))
-(define (find-image file-system-type target)
- "Find and return an image built that could match the given FILE-SYSTEM-TYPE,
-built for TARGET. This is useful to adapt to interfaces written before the
-addition of the <image> record."
- (match file-system-type
- ("iso9660" iso9660-image)
- (_ (cond
- ((and target
- (hurd-triplet? target))
- (module-ref (resolve-interface '(gnu system images hurd))
- 'hurd-disk-image))
- (else
- efi-disk-image)))))
+
+;;
+;; Image detection.
+;;
+
+(define (image-modules)
+ "Return the list of image modules."
+ (cons (resolve-interface '(gnu system image))
+ (all-modules (map (lambda (entry)
+ `(,entry . "gnu/system/images/"))
+ %load-path)
+ #:warn warn-about-load-error)))
+
+(define %image-types
+ ;; The list of publically-known image types.
+ (delay (fold-module-public-variables (lambda (obj result)
+ (if (image-type? obj)
+ (cons obj result)
+ result))
+ '()
+ (image-modules))))
+
+(define (lookup-image-type-by-name name)
+ "Return the image type called NAME."
+ (or (srfi-1:find (lambda (image-type)
+ (eq? name (image-type-name image-type)))
+ (force %image-types))
+ (raise
+ (formatted-message (G_ "~a: no such image type~%") name))))
;;; image.scm ends here
diff --git a/gnu/system/images/hurd.scm b/gnu/system/images/hurd.scm
index 6d46eb5eda..4417952c5d 100644
--- a/gnu/system/images/hurd.scm
+++ b/gnu/system/images/hurd.scm
@@ -29,8 +29,11 @@
#:use-module (gnu system file-systems)
#:use-module (gnu system hurd)
#:use-module (gnu system image)
+ #:use-module (srfi srfi-26)
#:export (hurd-barebones-os
hurd-disk-image
+ hurd-image-type
+ hurd-qcow2-image-type
hurd-barebones-disk-image
hurd-barebones-qcow2-image))
@@ -83,14 +86,28 @@
(flags '(boot))
(initializer hurd-initialize-root-partition))))))
+(define hurd-image-type
+ (image-type
+ (name 'hurd-raw)
+ (constructor (cut image-with-os hurd-disk-image <>))))
+
+(define hurd-qcow2-image-type
+ (image-type
+ (name 'hurd-qcow2)
+ (constructor (lambda (os)
+ (image
+ (inherit hurd-disk-image)
+ (format 'compressed-qcow2)
+ (operating-system os))))))
+
(define hurd-barebones-disk-image
(image
- (inherit hurd-disk-image)
- (name 'hurd-barebones-disk-image)
- (operating-system hurd-barebones-os)))
+ (inherit
+ (os->image hurd-barebones-os #:type hurd-image-type))
+ (name 'hurd-barebones-disk-image)))
(define hurd-barebones-qcow2-image
(image
- (inherit hurd-barebones-disk-image)
- (name 'hurd-barebones.qcow2)
- (format 'compressed-qcow2)))
+ (inherit
+ (os->image hurd-barebones-os #:type hurd-qcow2-image-type))
+ (name 'hurd-barebones.qcow2)))