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system: Add 'create-mount-point?' file system option.

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* gnu/system/file-systems.scm (<file-system>)[create-mount-point?]: New
  field.
* gnu/services/base.scm (file-system-service): Add #:create-mount-point?
  parameter and honor it.
* gnu/system.scm (other-file-system-services): Update
  'file-system-service' call accordingly.
* doc/guix.texi (File Systems): Document it.
This commit is contained in:
Ludovic Courtès 2014-07-22 22:53:36 +02:00
parent 5ac12a4f77
commit 4e469051a7
4 changed files with 17 additions and 4 deletions
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3
doc/guix.texi
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@ -3054,6 +3054,9 @@ instance, for the root file system.
This Boolean indicates whether the file system needs to be checked for This Boolean indicates whether the file system needs to be checked for
errors before being mounted. errors before being mounted.
@item @code{create-mount-point?} (default: @code{#f})
When true, the mount point is created if it does not exist yet.
@end table @end table
@end deftp @end deftp

9
gnu/services/base.scm
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@ -96,11 +96,13 @@ (define (root-file-system-service)
(respawn? #f))))) (respawn? #f)))))
(define* (file-system-service device target type (define* (file-system-service device target type
#:key (check? #t) options (title 'any)) #:key (check? #t) create-mount-point?
options (title 'any))
"Return a service that mounts DEVICE on TARGET as a file system TYPE with "Return a service that mounts DEVICE on TARGET as a file system TYPE with
OPTIONS. TITLE is a symbol specifying what kind of name DEVICE is: 'label for OPTIONS. TITLE is a symbol specifying what kind of name DEVICE is: 'label for
a partition label, 'device for a device file name, or 'any. When CHECK? is a partition label, 'device for a device file name, or 'any. When CHECK? is
true, check the file system before mounting it." true, check the file system before mounting it. When CREATE-MOUNT-POINT? is
true, create TARGET if it does not exist yet."
(with-monad %store-monad (with-monad %store-monad
(return (return
(service (service
@ -109,6 +111,9 @@ (define* (file-system-service device target type
(documentation "Check, mount, and unmount the given file system.") (documentation "Check, mount, and unmount the given file system.")
(start #~(lambda args (start #~(lambda args
(let ((device (canonicalize-device-spec #$device '#$title))) (let ((device (canonicalize-device-spec #$device '#$title)))
#$(if create-mount-point?
#~(mkdir-p #$target)
#~#t)
#$(if check? #$(if check?
#~(begin #~(begin
;; Make sure fsck.ext2 & co. can be found. ;; Make sure fsck.ext2 & co. can be found.

3
gnu/system.scm
View file

@ -181,10 +181,11 @@ (define file-systems
(sequence %store-monad (sequence %store-monad
(map (match-lambda (map (match-lambda
(($ <file-system> device title target type flags opts (($ <file-system> device title target type flags opts
#f check?) #f check? create?)
(file-system-service device target type (file-system-service device target type
#:title title #:title title
#:check? check? #:check? check?
#:create-mount-point? create?
#:options opts))) #:options opts)))
file-systems))) file-systems)))

6
gnu/system/file-systems.scm
View file

@ -28,6 +28,8 @@ (define-module (gnu system file-systems)
file-system-needed-for-boot? file-system-needed-for-boot?
file-system-flags file-system-flags
file-system-options file-system-options
file-system-check?
file-system-create-mount-point?
%fuse-control-file-system %fuse-control-file-system
%binary-format-file-system %binary-format-file-system
@ -57,7 +59,9 @@ (define-record-type* <file-system> file-system
(needed-for-boot? file-system-needed-for-boot? ; Boolean (needed-for-boot? file-system-needed-for-boot? ; Boolean
(default #f)) (default #f))
(check? file-system-check? ; Boolean (check? file-system-check? ; Boolean
(default #t))) (default #t))
(create-mount-point? file-system-create-mount-point? ; Boolean
(default #f)))
(define %fuse-control-file-system (define %fuse-control-file-system
;; Control file system for Linux' file systems in user-space (FUSE). ;; Control file system for Linux' file systems in user-space (FUSE).