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-rw-r--r--gnu/system.scm189
1 files changed, 94 insertions, 95 deletions
diff --git a/gnu/system.scm b/gnu/system.scm
index 189a13262f..748e3f7e9a 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -199,6 +199,100 @@ directly by the user."
;;;
+;;; Boot parameters
+;;;
+
+(define-record-type* <boot-parameters>
+ boot-parameters make-boot-parameters boot-parameters?
+ (label boot-parameters-label)
+ ;; Because we will use the 'store-device' to create the GRUB search command,
+ ;; the 'store-device' has slightly different semantics than 'root-device'.
+ ;; The 'store-device' can be a file system uuid, a file system label, or #f,
+ ;; but it cannot be a device path such as "/dev/sda3", since GRUB would not
+ ;; understand that. The 'root-device', on the other hand, corresponds
+ ;; exactly to the device field of the <file-system> object representing the
+ ;; OS's root file system, so it might be a device path like "/dev/sda3".
+ (root-device boot-parameters-root-device)
+ (store-device boot-parameters-store-device)
+ (store-mount-point boot-parameters-store-mount-point)
+ (kernel boot-parameters-kernel)
+ (kernel-arguments boot-parameters-kernel-arguments)
+ (initrd boot-parameters-initrd))
+
+(define (read-boot-parameters port)
+ "Read boot parameters from PORT and return the corresponding
+<boot-parameters> object or #f if the format is unrecognized."
+ (match (read port)
+ (('boot-parameters ('version 0)
+ ('label label) ('root-device root)
+ ('kernel linux)
+ rest ...)
+ (boot-parameters
+ (label label)
+ (root-device root)
+
+ ;; In the past, we would store the directory name of the kernel instead
+ ;; of the absolute file name of its image. Detect that and correct it.
+ (kernel (if (string=? linux (direct-store-path linux))
+ (string-append linux "/"
+ (system-linux-image-file-name))
+ linux))
+
+ (kernel-arguments
+ (match (assq 'kernel-arguments rest)
+ ((_ args) args)
+ (#f '()))) ;the old format
+
+ (initrd
+ (match (assq 'initrd rest)
+ (('initrd ('string-append directory file)) ;the old format
+ (string-append directory file))
+ (('initrd (? string? file))
+ file)))
+
+ (store-device
+ (match (assq 'store rest)
+ (('store ('device device) _ ...)
+ device)
+ (_ ;the old format
+ ;; Root might be a device path like "/dev/sda1", which is not a
+ ;; suitable GRUB device identifier.
+ (if (string-prefix? "/" root)
+ #f
+ root))))
+
+ (store-mount-point
+ (match (assq 'store rest)
+ (('store ('device _) ('mount-point mount-point) _ ...)
+ mount-point)
+ (_ ;the old format
+ "/")))))
+ (x ;unsupported format
+ (warning (G_ "unrecognized boot parameters for '~a'~%")
+ system)
+ #f)))
+
+(define (read-boot-parameters-file system)
+ "Read boot parameters from SYSTEM's (system or generation) \"parameters\"
+file and returns the corresponding <boot-parameters> object or #f if the
+format is unrecognized.
+The object has its kernel-arguments extended in order to make it bootable."
+ (let* ((file (string-append system "/parameters"))
+ (params (call-with-input-file file read-boot-parameters))
+ (root (boot-parameters-root-device params))
+ (root-device (if (bytevector? root)
+ (uuid->string root)
+ root))
+ (kernel-arguments (boot-parameters-kernel-arguments params)))
+ (if params
+ (boot-parameters
+ (inherit params)
+ (kernel-arguments (bootable-kernel-arguments kernel-arguments
+ system
+ root-device)))
+ #f)))
+
+;;;
;;; Services.
;;;
@@ -813,99 +907,4 @@ being stored into the \"parameters\" file)."
(mount-point #$(boot-parameters-store-mount-point params))))
#:set-load-path? #f)))
-
-;;;
-;;; Boot parameters
-;;;
-
-(define-record-type* <boot-parameters>
- boot-parameters make-boot-parameters boot-parameters?
- (label boot-parameters-label)
- ;; Because we will use the 'store-device' to create the GRUB search command,
- ;; the 'store-device' has slightly different semantics than 'root-device'.
- ;; The 'store-device' can be a file system uuid, a file system label, or #f,
- ;; but it cannot be a device path such as "/dev/sda3", since GRUB would not
- ;; understand that. The 'root-device', on the other hand, corresponds
- ;; exactly to the device field of the <file-system> object representing the
- ;; OS's root file system, so it might be a device path like "/dev/sda3".
- (root-device boot-parameters-root-device)
- (store-device boot-parameters-store-device)
- (store-mount-point boot-parameters-store-mount-point)
- (kernel boot-parameters-kernel)
- (kernel-arguments boot-parameters-kernel-arguments)
- (initrd boot-parameters-initrd))
-
-(define (read-boot-parameters port)
- "Read boot parameters from PORT and return the corresponding
-<boot-parameters> object or #f if the format is unrecognized."
- (match (read port)
- (('boot-parameters ('version 0)
- ('label label) ('root-device root)
- ('kernel linux)
- rest ...)
- (boot-parameters
- (label label)
- (root-device root)
-
- ;; In the past, we would store the directory name of the kernel instead
- ;; of the absolute file name of its image. Detect that and correct it.
- (kernel (if (string=? linux (direct-store-path linux))
- (string-append linux "/"
- (system-linux-image-file-name))
- linux))
-
- (kernel-arguments
- (match (assq 'kernel-arguments rest)
- ((_ args) args)
- (#f '()))) ;the old format
-
- (initrd
- (match (assq 'initrd rest)
- (('initrd ('string-append directory file)) ;the old format
- (string-append directory file))
- (('initrd (? string? file))
- file)))
-
- (store-device
- (match (assq 'store rest)
- (('store ('device device) _ ...)
- device)
- (_ ;the old format
- ;; Root might be a device path like "/dev/sda1", which is not a
- ;; suitable GRUB device identifier.
- (if (string-prefix? "/" root)
- #f
- root))))
-
- (store-mount-point
- (match (assq 'store rest)
- (('store ('device _) ('mount-point mount-point) _ ...)
- mount-point)
- (_ ;the old format
- "/")))))
- (x ;unsupported format
- (warning (G_ "unrecognized boot parameters for '~a'~%")
- system)
- #f)))
-
-(define (read-boot-parameters-file system)
- "Read boot parameters from SYSTEM's (system or generation) \"parameters\"
-file and returns the corresponding <boot-parameters> object or #f if the
-format is unrecognized.
-The object has its kernel-arguments extended in order to make it bootable."
- (let* ((file (string-append system "/parameters"))
- (params (call-with-input-file file read-boot-parameters))
- (root (boot-parameters-root-device params))
- (root-device (if (bytevector? root)
- (uuid->string root)
- root))
- (kernel-arguments (boot-parameters-kernel-arguments params)))
- (if params
- (boot-parameters
- (inherit params)
- (kernel-arguments (bootable-kernel-arguments kernel-arguments
- system
- root-device)))
- #f)))
-
;;; system.scm ends here