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linux-initrd: Make more device nodes for SCSI disks and CD-ROM devices. 

* guix/build/linux-initrd.scm (make-disk-device-nodes): New procedure.
  (make-essential-device-nodes): Use it.  Make more devices nodes for
  SCSI disks and CD-ROM devices.
This commit is contained in:
Ludovic Courtès 2014-06-01 21:48:57 +02:00
parent 009d831167
commit ac52e80b4e
1 changed files with 19 additions and 6 deletions
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25
guix/build/linux-initrd.scm
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@ -211,6 +211,16 @@ corresponding device name."
spec
(or (find-partition-by-label spec) spec)))
(define* (make-disk-device-nodes base major #:optional (minor 0))
"Make the block device nodes around BASE (something like \"/root/dev/sda\")
with the given MAJOR number, starting with MINOR."
(mknod base 'block-special #o644 (device-number major minor))
(let loop ((i 1))
(when (< i 6)
(mknod (string-append base (number->string i))
'block-special #o644 (device-number major (+ minor i)))
(loop (+ i 1)))))
(define* (make-essential-device-nodes #:key (root "/"))
"Make essential device nodes under ROOT/dev."
;; The hand-made udev!
@ -226,14 +236,17 @@ corresponding device name."
(mkdir (scope "dev")))
;; Make the device nodes for SCSI disks.
(mknod (scope "dev/sda") 'block-special #o644 (device-number 8 0))
(mknod (scope "dev/sda1") 'block-special #o644 (device-number 8 1))
(mknod (scope "dev/sda2") 'block-special #o644 (device-number 8 2))
(make-disk-device-nodes (scope "dev/sda") 8)
(make-disk-device-nodes (scope "dev/sdb") 8 16)
(make-disk-device-nodes (scope "dev/sdc") 8 32)
(make-disk-device-nodes (scope "dev/sdd") 8 48)
;; SCSI CD-ROM devices (aka. "/dev/sr0" etc.).
(mknod (scope "dev/scd0") 'block-special #o644 (device-number 11 0))
(mknod (scope "dev/scd1") 'block-special #o644 (device-number 11 1))
;; The virtio (para-virtualized) block devices, as supported by QEMU/KVM.
(mknod (scope "dev/vda") 'block-special #o644 (device-number 252 0))
(mknod (scope "dev/vda1") 'block-special #o644 (device-number 252 1))
(mknod (scope "dev/vda2") 'block-special #o644 (device-number 252 2))
(make-disk-device-nodes (scope "dev/vda") 252)
;; Memory (used by Xorg's VESA driver.)
(mknod (scope "dev/mem") 'char-special #o640 (device-number 1 1))