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-rw-r--r--gnu/system.scm64
1 files changed, 43 insertions, 21 deletions
diff --git a/gnu/system.scm b/gnu/system.scm
index a35a416cb0..cb7c1b0cec 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -769,27 +769,49 @@ device in a <menu-entry>."
((label) (file-system-device fs))
(else #f)))
-(define (operating-system-boot-parameters-file os)
- "Return a file that describes the boot parameters of OS. The primary use of
-this file is the reconstruction of GRUB menu entries for old configurations."
- (mlet %store-monad ((initrd (operating-system-initrd-file os))
- (root -> (operating-system-root-file-system os))
- (store -> (operating-system-store-file-system os))
- (label -> (kernel->boot-label
- (operating-system-kernel os))))
- (gexp->file "parameters"
- #~(boot-parameters
- (version 0)
- (label #$label)
- (root-device #$(file-system-device root))
- (kernel #$(operating-system-kernel-file os))
- (kernel-arguments
- #$(operating-system-user-kernel-arguments os))
- (initrd #$initrd)
- (store
- (device #$(fs->boot-device store))
- (mount-point #$(file-system-mount-point store))))
- #:set-load-path? #f)))
+(define (operating-system-boot-parameters os system root-device)
+ "Return a monadic <boot-parameters> record that describes the boot parameters of OS.
+SYSTEM is optional. If given, adds kernel arguments for that system to <boot-parameters>."
+ (mlet* %store-monad
+ ((initrd (operating-system-initrd-file os))
+ (store -> (operating-system-store-file-system os))
+ (label -> (kernel->boot-label (operating-system-kernel os))))
+ (return (boot-parameters
+ (label label)
+ (root-device root-device)
+ (kernel (operating-system-kernel-file os))
+ (kernel-arguments
+ (operating-system-user-kernel-arguments os))
+ (initrd initrd)
+ (store-device (fs->boot-device store))
+ (store-mount-point (file-system-mount-point store))))))
+
+(define* (operating-system-boot-parameters-file os #:optional (system.drv #f))
+ "Return a file that describes the boot parameters of OS. The primary use of
+this file is the reconstruction of GRUB menu entries for old configurations.
+SYSTEM.DRV is optional. If given, adds kernel arguments for that system to the
+returned file (since the returned file is then usually stored into the
+content-addressed \"system\" directory, it's usually not a good idea
+to give it because the content hash would change by the content hash
+being stored into the \"parameters\" file)."
+ (mlet* %store-monad ((root -> (operating-system-root-file-system os))
+ (device -> (file-system-device root))
+ (params (operating-system-boot-parameters os
+ system.drv
+ device)))
+ (gexp->file "parameters"
+ #~(boot-parameters
+ (version 0)
+ (label #$(boot-parameters-label params))
+ (root-device #$(boot-parameters-root-device params))
+ (kernel #$(boot-parameters-kernel params))
+ (kernel-arguments
+ #$(boot-parameters-kernel-arguments params))
+ (initrd #$(boot-parameters-initrd params))
+ (store
+ (device #$(boot-parameters-store-device params))
+ (mount-point #$(boot-parameters-store-mount-point params))))
+ #:set-load-path? #f)))
;;;