diff options
Diffstat (limited to 'gnu/build/image.scm')
| -rw-r--r-- | gnu/build/image.scm | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gnu/build/image.scm b/gnu/build/image.scm index f6e5cb42f6..78e84f463f 100644 --- a/gnu/build/image.scm +++ b/gnu/build/image.scm @@ -60,6 +60,11 @@ (number->string (inexact->exact (ceiling (/ size 1024))))) +(define (size-in-mib size) + "Convert SIZE expressed in bytes, to ... and return it as a string." + (number->string + (inexact->exact (ceiling (/ size (* 1024 1024)))))) + (define (estimate-partition-size root) "Given the ROOT directory, evalute and return its size. As this doesn't take the partition metadata size into account, take a 25% margin." @@ -107,6 +112,17 @@ take the partition metadata size into account, take a 25% margin." (string-append "::" file)))) (scandir root)))) +(define* (make-swap-image partition target root) + "Handle the creation of SWAP partition images. See 'make-partition-image'." + (let ((size (partition-size partition)) + (label (partition-label partition))) + (invoke "dd" + "if=/dev/zero" + (string-append "of=" target) + "bs=1MiB" + (simple-format #f "count=~A" (size-in-mib size))) + (invoke "mkswap" "-L" label target))) + (define* (make-partition-image partition-sexp target root) "Create and return the image of PARTITION-SEXP as TARGET. Use the given ROOT directory to populate the image." @@ -117,6 +133,8 @@ ROOT directory to populate the image." (make-ext-image partition target root)) ((string=? type "vfat") (make-vfat-image partition target root)) + ((string=? type "swap") + (make-swap-image partition target root)) (else (raise (condition (&message |