bug#26339: [PATCH v3 5/9] bootloader: Add device and type to bootloader-configuration record.

[Mathieu Othacehe <m.othacehe@gmail.com>]

* gnu/system.scm (<boot-parameters>)[device, type]: New fields.
(boot-parameters-boot-device): New exported procedure.
(boot-parameters-boot-type): Ditto.
(operating-system-grub.cfg): Add new fields.
(operating-system-parameters-file): Add new fields and replace GRUB by
bootloader in doctype.
(read-boot-parameters): Ditto.
---
 gnu/system.scm | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/gnu/system.scm b/gnu/system.scm
index b947d982d..6d4cbf737 100644
--- a/gnu/system.scm
+++ b/gnu/system.scm
@@ -104,6 +104,8 @@
             boot-parameters?
             boot-parameters-label
             boot-parameters-root-device
+            boot-parameters-boot-device
+            boot-parameters-boot-type
             boot-parameters-store-device
             boot-parameters-store-mount-point
             boot-parameters-kernel
@@ -772,6 +774,10 @@ kernel arguments for that derivation to <boot-parameters>."
   (mlet* %store-monad
       ((initrd (operating-system-initrd-file os))
        (store -> (operating-system-store-file-system os))
+       (boot-device -> (bootloader-configuration-device
+                        (operating-system-bootloader os)))
+       (boot-type -> (bootloader-configuration-type
+                      (operating-system-bootloader os)))
        (label -> (kernel->boot-label (operating-system-kernel os))))
     (return (boot-parameters
              (label label)
@@ -782,6 +788,8 @@ kernel arguments for that derivation to <boot-parameters>."
                 (operating-system-kernel-arguments os system.drv root-device)
                 (operating-system-user-kernel-arguments os)))
              (initrd initrd)
+             (boot-device boot-device)
+             (boot-type boot-type)
              (store-device (fs->boot-device store))
              (store-mount-point (file-system-mount-point store))))))
 
@@ -807,6 +815,8 @@ being stored into the \"parameters\" file)."
                     (kernel-arguments
                      #$(boot-parameters-kernel-arguments params))
                     (initrd #$(boot-parameters-initrd params))
+                    (boot-device #$(boot-parameters-boot-device params))
+                    (boot-type #$(boot-parameters-boot-type params))
                     (store
                      (device #$(boot-parameters-store-device params))
                      (mount-point #$(boot-parameters-store-mount-point params))))
@@ -828,6 +838,8 @@ being stored into the \"parameters\" file)."
   ;; 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)
+  (boot-device      boot-parameters-boot-device)
+  (boot-type        boot-parameters-boot-type)
   (store-device     boot-parameters-store-device)
   (store-mount-point boot-parameters-store-mount-point)
   (kernel           boot-parameters-kernel)
@@ -846,6 +858,16 @@ being stored into the \"parameters\" file)."
       (label label)
       (root-device root)
 
+      (boot-device
+       (match (assq 'boot-device rest)
+         ((_ args) args)
+         (#f       #f))) ; for compatibility reasons.
+
+      (boot-type
+       (match (assq 'boot-type rest)
+         ((_ args) args)
+         (#f       'grub))) ; for compatibility reasons.
+
       ;; 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))
-- 
2.12.2