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

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.
gn-latest-20200725
Maxim Cournoyer 1 year ago
parent
commit
e7b86a0d88
No known key found for this signature in database GPG Key ID: 1260E46482E63562
  1. 47
      gnu/bootloader/grub.scm
  2. 2
      gnu/system.scm

47
gnu/bootloader/grub.scm

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

2
gnu/system.scm

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

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