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bootloader: grub: Rename the btrfs-subvolume-file-name parameter.

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Following discussion in <https://issues.guix.gnu.org/37305>, it seems more
appropriate to give the parameter a more generic name that better describes
what it does.

* gnu/bootloader/grub.scm (normalize-file): Rename the
BTRFS-SUBVOLUME-FILE-NAME parameter to STORE-DIRECTORY-PREFIX, and always
assume this argument to be a string.
(eye-candy): Likewise.  Default STORE-DIRECTORY-PREFIX to "".
(grub-configuration-file): Likewise.
* gnu/system.scm (operating-system-bootcfg): Adapt.
This commit is contained in:
Maxim Cournoyer 2020-05-27 22:44:28 -04:00
parent c08fac0f7d
commit e7b86a0d88
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GPG Key ID: 1260E46482E63562
2 changed files with 23 additions and 26 deletions
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47
gnu/bootloader/grub.scm
View File

@ -58,8 +58,8 @@
;;; ;;;
;;; Code: ;;; Code:
(define* (normalize-file file mount-point btrfs-subvolume-file-name) (define* (normalize-file file mount-point store-directory-prefix)
"Strip MOUNT-POINT and prepend BTRFS-SUBVOLUME-FILE-NAME to FILE, a "Strip MOUNT-POINT and prepend STORE-DIRECTORY-PREFIX, if any, to FILE, a
G-expression or other lowerable object denoting a file name." G-expression or other lowerable object denoting a file name."
(define (strip-mount-point mount-point file) (define (strip-mount-point mount-point file)
@ -72,13 +72,13 @@ G-expression or other lowerable object denoting a file name."
file))) file)))
file)) file))
(define (prepend-btrfs-subvolume-file-name btrfs-subvolume-file-name file) (define (prepend-store-directory-prefix store-directory-prefix file)
(if btrfs-subvolume-file-name (if store-directory-prefix
#~(string-append #$btrfs-subvolume-file-name #$file) #~(string-append #$store-directory-prefix #$file)
file)) file))
(prepend-btrfs-subvolume-file-name btrfs-subvolume-file-name (prepend-store-directory-prefix store-directory-prefix
(strip-mount-point mount-point file))) (strip-mount-point mount-point file)))
@ -135,14 +135,14 @@ file with the resolution provided in CONFIG."
(_ #f))))) (_ #f)))))
(define* (eye-candy config store-device store-mount-point (define* (eye-candy config store-device store-mount-point
#:key btrfs-store-subvolume-file-name system port) #:key store-directory-prefix system port)
"Return a gexp that writes to PORT (a port-valued gexp) the 'grub.cfg' part "Return a gexp that writes to PORT (a port-valued gexp) the 'grub.cfg' part
concerned with graphics mode, background images, colors, and all that. concerned with graphics mode, background images, colors, and all that.
STORE-DEVICE designates the device holding the store, and STORE-MOUNT-POINT is STORE-DEVICE designates the device holding the store, and STORE-MOUNT-POINT is
its mount point; these are used to determine where the background image and its mount point; these are used to determine where the background image and
fonts must be searched for. SYSTEM must be the target system string---e.g., fonts must be searched for. SYSTEM must be the target system string---e.g.,
\"x86_64-linux\". BTRFS-STORE-SUBVOLUME-FILE-NAME is the file name of the \"x86_64-linux\". STORE-DIRECTORY-PREFIX is a directory prefix to prepend to
Btrfs subvolume, to be prepended to any store path, if any." any store file name."
(define setup-gfxterm-body (define setup-gfxterm-body
(let ((gfxmode (let ((gfxmode
(or (and-let* ((theme (bootloader-configuration-theme config)) (or (and-let* ((theme (bootloader-configuration-theme config))
@ -181,12 +181,12 @@ fi~%" #+font-file)
(define font-file (define font-file
(normalize-file (file-append grub "/share/grub/unicode.pf2") (normalize-file (file-append grub "/share/grub/unicode.pf2")
store-mount-point store-mount-point
btrfs-store-subvolume-file-name)) store-directory-prefix))
(define image (define image
(normalize-file (grub-background-image config) (normalize-file (grub-background-image config)
store-mount-point store-mount-point
btrfs-store-subvolume-file-name)) store-directory-prefix))
(and image (and image
#~(format #$port " #~(format #$port "
@ -320,13 +320,13 @@ code."
#:key #:key
(system (%current-system)) (system (%current-system))
(old-entries '()) (old-entries '())
btrfs-subvolume-file-name) store-directory-prefix)
"Return the GRUB configuration file corresponding to CONFIG, a "Return the GRUB configuration file corresponding to CONFIG, a
<bootloader-configuration> object, and where the store is available at <bootloader-configuration> object, and where the store is available at
STORE-FS, a <file-system> object. OLD-ENTRIES is taken to be a list STORE-FS, a <file-system> object. OLD-ENTRIES is taken to be a list of menu
of menu entries corresponding to old generations of the system. entries corresponding to old generations of the system.
BTRFS-SUBVOLUME-FILE-NAME may be used to specify on which subvolume a STORE-DIRECTORY-PREFIX may be used to specify a store prefix, as is required
Btrfs root file system resides." when booting a root file system on a Btrfs subvolume."
(define all-entries (define all-entries
(append entries (bootloader-configuration-menu-entries config))) (append entries (bootloader-configuration-menu-entries config)))
(define (menu-entry->gexp entry) (define (menu-entry->gexp entry)
@ -336,17 +336,14 @@ Btrfs root file system resides."
(arguments (menu-entry-linux-arguments entry)) (arguments (menu-entry-linux-arguments entry))
(kernel (normalize-file (menu-entry-linux entry) (kernel (normalize-file (menu-entry-linux entry)
device-mount-point device-mount-point
btrfs-subvolume-file-name)) store-directory-prefix))
(initrd (normalize-file (menu-entry-initrd entry) (initrd (normalize-file (menu-entry-initrd entry)
device-mount-point device-mount-point
btrfs-subvolume-file-name))) store-directory-prefix)))
;; Here DEVICE is the store and DEVICE-MOUNT-POINT is its mount point. ;; Here DEVICE is the store and DEVICE-MOUNT-POINT is its mount point.
;; Use the right file names for KERNEL and INITRD in case ;; Use the right file names for KERNEL and INITRD in case
;; DEVICE-MOUNT-POINT is not "/", meaning that the store is on a ;; DEVICE-MOUNT-POINT is not "/", meaning that the store is on a
;; separate partition. ;; separate partition.
;; When BTRFS-SUBVOLUME-FILE-NAME is defined, prepend it the kernel and
;; initrd paths, to allow booting from a Btrfs subvolume.
#~(format port "menuentry ~s { #~(format port "menuentry ~s {
~a ~a
linux ~a ~a linux ~a ~a
@ -360,7 +357,7 @@ Btrfs root file system resides."
(eye-candy config (eye-candy config
(menu-entry-device (first all-entries)) (menu-entry-device (first all-entries))
(menu-entry-device-mount-point (first all-entries)) (menu-entry-device-mount-point (first all-entries))
#:btrfs-store-subvolume-file-name btrfs-subvolume-file-name #:store-directory-prefix store-directory-prefix
#:system system #:system system
#:port #~port)) #:port #~port))
@ -371,8 +368,8 @@ Btrfs root file system resides."
(keymap* (and layout (keymap* (and layout
(keyboard-layout-file layout #:grub grub))) (keyboard-layout-file layout #:grub grub)))
(keymap (and keymap* (keymap (and keymap*
(if btrfs-subvolume-file-name (if store-directory-prefix
#~(string-append #$btrfs-subvolume-file-name #~(string-append #$store-directory-prefix
#$keymap*) #$keymap*)
keymap*)))) keymap*))))
#~(when #$keymap #~(when #$keymap

2
gnu/system.scm
View File

@ -1118,7 +1118,7 @@ a list of <menu-entry>, to populate the \"old entries\" menu."
(generate-config-file bootloader-conf (list entry) (generate-config-file bootloader-conf (list entry)
#:old-entries old-entries #:old-entries old-entries
#:btrfs-subvolume-file-name #:store-directory-prefix
(btrfs-store-subvolume-file-name file-systems)))) (btrfs-store-subvolume-file-name file-systems))))
(define* (operating-system-boot-parameters os root-device (define* (operating-system-boot-parameters os root-device