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mapped-devices: 'mapped-device-service' takes a <mapped-device>.

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* gnu/system/mapped-devices.scm (device-mapping-service): Take a
<mapped-device> instead of 3 parameters.
(device-mapping-service-type): Adjust accordingly.
* gnu/system.scm (device-mapping-services): Adjust accordingly.
This commit is contained in:
Ludovic Courtès 2016-04-17 18:26:50 +02:00
parent 1ea507bce2
commit 4da8c19e83
2 changed files with 8 additions and 18 deletions
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10
gnu/system.scm
View file

@ -233,15 +233,7 @@ (define (operating-system-boot-mapped-devices os)
(define (device-mapping-services os)
"Return the list of device-mapping services for OS as a list."
(map (lambda (md)
(let* ((source (mapped-device-source md))
(target (mapped-device-target md))
(type (mapped-device-type md))
(open (mapped-device-kind-open type))
(close (mapped-device-kind-close type)))
(device-mapping-service target
(open source target)
(close source target))))
(map device-mapping-service
(operating-system-user-mapped-devices os)))
(define (swap-services os)

16
gnu/system/mapped-devices.scm
View file

@ -69,21 +69,19 @@ (define device-mapping-service-type
(shepherd-service-type
'device-mapping
(match-lambda
((target open close)
(($ <mapped-device> source target
($ <mapped-device-type> open close))
(shepherd-service
(provision (list (symbol-append 'device-mapping- (string->symbol target))))
(requirement '(udev))
(documentation "Map a device node using Linux's device mapper.")
(start #~(lambda () #$open))
(stop #~(lambda _ (not #$close)))
(start #~(lambda () #$(open source target)))
(stop #~(lambda _ (not #$(close source target))))
(respawn? #f))))))
(define (device-mapping-service target open close)
"Return a service that maps device @var{target}, a string such as
@code{\"home\"} (meaning @code{/dev/mapper/home}). Evaluate @var{open}, a
gexp, to open it, and evaluate @var{close} to close it."
(service device-mapping-service-type
(list target open close)))
(define (device-mapping-service mapped-device)
"Return a service that sets up @var{mapped-device}."
(service device-mapping-service-type mapped-device))
;;;