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build: Allow mounting of entire disks.

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* gnu/build/file-systems.scm (disk-partitions): Also return entire drives.
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Danny Milosavljevic 2017-07-21 01:06:46 +02:00
parent 91d94e28ec
commit 9833bcfc08
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1 changed files with 9 additions and 8 deletions
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17
gnu/build/file-systems.scm
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@ -373,15 +373,16 @@ (define (luks-header-uuid header)
(define (disk-partitions)
"Return the list of device names corresponding to valid disk partitions."
(define (last-character str)
(string-ref str (- (string-length str) 1)))
(define (partition? name major minor)
;; Select device names that end in a digit, like libblkid's 'probe_all'
;; function does. Checking for "/sys/dev/block/MAJOR:MINOR/partition"
;; doesn't work for partitions coming from mapped devices.
(and (char-set-contains? char-set:digit (last-character name))
(> major 2))) ;ignore RAM disks and floppy disks
;; grub-mkrescue does some funny things for EFI support which
;; makes it a lot more difficult than one would expect to support
;; booting an ISO-9660 image from an USB flash drive.
;; For example there's a buggy (too small) hidden partition in it
;; which Linux mounts and then proceeds to fail while trying to
;; fall off the edge.
;; In any case, partition tables are supposed to be optional so
;; here we allow checking entire disks for file systems, too.
(> major 2)) ;ignore RAM disks and floppy disks
(call-with-input-file "/proc/partitions"
(lambda (port)