From: Efraim Flashner <efraim@flashner.co.il>
To: Stefan <stefan-guix@vodafonemail.de>
Cc: Danny Milosavljevic <dannym@scratchpost.org>, 41011@debbugs.gnu.org
Subject: [bug#41011] [PATCH] gnu: grub: Support for network boot via TFTP.
Date: Mon, 14 Sep 2020 09:59:11 +0300 [thread overview]
Message-ID: <20200914065911.GB1717@E5400> (raw)
In-Reply-To: <EBABB586-FA6F-402D-91F6-956FDA7DAA7C@vodafonemail.de>
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On Sun, Sep 13, 2020 at 07:46:01PM +0200, Stefan wrote:
> * gnu/bootloader/grub.scm (grub-efi-netboot-bootloader): New bootloader for
> network booting.
> (install-grub-efi-netboot): New bootloader installer for network booting.
> (grub-root-search): Set the root to "(tftp)" if the searched file is not stored
> on a local devices, i.e. an NFS share.
> ---
> gnu/bootloader/grub.scm | 97 ++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 96 insertions(+), 1 deletion(-)
>
> diff --git a/gnu/bootloader/grub.scm b/gnu/bootloader/grub.scm
> index e3febeefd0..552bc34f5a 100644
> --- a/gnu/bootloader/grub.scm
> +++ b/gnu/bootloader/grub.scm
> @@ -23,8 +23,10 @@
> ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
>
> (define-module (gnu bootloader grub)
> + #:use-module (guix build union)
> #:use-module (guix records)
> - #:use-module ((guix utils) #:select (%current-system))
> + #:use-module (guix store)
> + #:use-module ((guix utils) #:select (%current-system %current-target-system))
> #:use-module (guix gexp)
> #:use-module (gnu artwork)
> #:use-module (gnu bootloader)
> @@ -46,8 +48,11 @@
> grub-theme-color-highlight
> grub-theme-gfxmode
>
> + install-grub-efi-netboot
> +
> grub-bootloader
> grub-efi-bootloader
> + grub-efi-netboot-bootloader
> grub-mkrescue-bootloader
> grub-minimal-bootloader
>
> @@ -295,6 +300,9 @@ code."
> ((? file-system-label? label)
> (format #f "search --label --set ~a"
> (file-system-label->string label)))
> + ((? (lambda (device)
> + (and (string? device) (string-contains device ":/"))) nfs-uri)
> + "set root=(tftp)")
> ((or #f (? string?))
> #~(format #f "search --file --set ~a" #$file)))))
>
> @@ -501,6 +509,87 @@ fi~%"))))
> "--bootloader-id=Guix"
> "--efi-directory" target-esp))))
>
> +(define (install-grub-efi-netboot subdir)
> + "Define a grub-efi-netboot bootloader installer for installation in SUBDIR,
> +which is usually efi/Guix or efi/boot."
> + (let* ((system (string-split (or (%current-target-system)
> + (%current-system))
> + #\-))
> + (boot-efi-link (match system
> + (("i686" _ ...) "/bootia32.efi")
> + (("x86_64" _ ...) "/bootx64.efi")
> + (("arm" _ ...) "/bootarm.efi")
> + (("armhf" _ ...) "/bootarm.efi")
> + (("aarch64" _ ...) "/bootaa64.efi")
> + (("riscv" _ ...) "/bootriscv32.efi")
> + (("riscv64" _ ...) "/bootriscv64.efi")))
Don't forget the fall-through case, even if it's just
((_ ...) "/bootTODO.efi")
> + (efi-bootloader (string-append (match system
> + (("i686" _ ...) "i386-efi")
> + (("x86_64" _ ...) "x86_64-efi")
> + (("arm" _ ...) "arm-efi")
> + (("armhf" _ ...) "arm-efi")
> + (("aarch64" _ ...) "arm64-efi")
> + (("riscv" _ ...) "riscv32-efi")
> + (("riscv64" _ ...) "riscv64-efi"))
> + "/core.efi")))
With the fall-through case here, can this be changed to
(("i686" _ ...) "i386-efi")
(("aarch64" _ ...) "arm64-efi")
(("riscv" _ ...) "riscv32-efi")
((_ ...) (string-append (first
(string-split
(nix-system->gnu-triplet
(or (%current-system)
(%current-target-system)))
#\_))
"-efi"))
> + (with-imported-modules
> + '((guix build union))
> + #~(lambda (bootloader target mount-point)
> + "Install the BOOTLOADER, which must be the package grub, as e.g.
> +bootx64.efi or bootarm64.efi into SUBDIR, which is usually efi/Guix or efi/boot,
> +below the directory TARGET for the system whose root is mounted at MOUNT-POINT.
> +
> +MOUNT-POINT is the last argument in 'guix system init /etc/config.scm mnt/point'
> +or '/' for other 'guix system' commands.
> +
> +TARGET is the target argument given to the bootloader-configuration in
> +(operating-system
> + (bootloader (bootloader-configuration
> + (target \"/boot\")
> + …))
> + …)
> +TARGET is required to be an absolute path and must be provided by a TFTP server
> +as the TFTP root directory.
> +
> +GRUB will load tftp://server/SUBDIR/grub.cfg and this file will instruct it to
> +load more files from the store like tftp://server/gnu/store/…-linux…/Image.
> +
> +To make this possible two symlinks will be created. The first symlink points
> +relatively form TARGET/SUBDIR/grub.cfg to /boot/grub/grub.cfg. And the second
> +symlink points relatively from TARGET/%store-prefix to %store-prefix.
> +
> +It is important to note that these symlinks need to be relativ, as the absolute
> +paths on the TFTP server side are unknown.
> +
> +It is also important to note that both symlinks will point outside the TFTP root
> +directory and that the TARGET/%store-prefix symlink makes the whole store
> +accessible via TFTP. Possibly the TFTP server must be configured
> +to allow accesses outside its TFTP root directory. This may need to be
> +considered for security aspects."
> + (use-modules ((guix build union) #:select (symlink-relative)))
> + (let* ((net-dir (string-append mount-point target "/"))
> + (sub-dir (string-append net-dir #$subdir "/"))
> + (store-link (string-append net-dir (%store-prefix)))
> + (grub-cfg "/boot/grub/grub.cfg")
> + (grub-cfg-link (string-append sub-dir (basename grub-cfg)))
> + (boot-efi-link (string-append sub-dir #$boot-efi-link)))
> + ;; Prepare the symlink to the store.
> + (mkdir-p (dirname store-link))
> + (false-if-exception (delete-file store-link))
> + (symlink-relative (%store-prefix) store-link)
> + ;; Prepare the symlink to the grub.cfg, which points into the store.
> + (false-if-exception (delete-file grub-cfg-link))
> + (symlink-relative grub-cfg grub-cfg-link)
> + ;; Install GRUB, which refers to the grub.cfg, with support for
> + ;; encrypted partitions,
> + (setenv "GRUB_ENABLE_CRYPTODISK" "y")
> + (invoke/quiet (string-append bootloader "/bin/grub-mknetdir")
> + (string-append "--net-directory=" net-dir)
> + (string-append "--subdir=" #$subdir))
> + ;; Prepare the bootloader symlink, which points to GRUB.
> + (false-if-exception (delete-file boot-efi-link))
> + (symlink #$efi-bootloader boot-efi-link))))))
> +
> ^L
>
> ;;;
> @@ -533,6 +622,12 @@ fi~%"))))
> (name 'grub-efi)
> (package grub-efi)))
>
> +(define grub-efi-netboot-bootloader
> + (bootloader
> + (inherit grub-efi-bootloader)
> + (name 'grub-efi-netboot-bootloader)
> + (installer (install-grub-efi-netboot "efi/Guix"))))
> +
> (define grub-mkrescue-bootloader
> (bootloader
> (inherit grub-efi-bootloader)
> --
> 2.26.0
>
>
>
>
--
Efraim Flashner <efraim@flashner.co.il> אפרים פלשנר
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next prev parent reply other threads:[~2020-09-14 7:00 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-01 20:32 [bug#41011] [PATCH] gnu: grub: Support for network boot via tftp/nfs Stefan
2020-05-10 8:20 ` Mathieu Othacehe
2020-05-10 21:13 ` Stefan
2020-05-18 21:43 ` Stefan
2020-05-21 15:07 ` Stefan
2020-05-21 18:40 ` Stefan
2020-05-23 8:10 ` Mathieu Othacehe
2020-05-24 0:22 ` Stefan
2020-05-23 8:02 ` Mathieu Othacehe
2020-05-24 10:18 ` Stefan
2020-05-24 11:00 ` Danny Milosavljevic
2020-05-24 13:09 ` Stefan
2020-05-24 13:42 ` Danny Milosavljevic
2020-05-24 13:58 ` Danny Milosavljevic
2020-05-24 17:06 ` Stefan
2020-05-24 16:47 ` Stefan
2020-06-06 13:30 ` Stefan
2020-06-06 13:33 ` Stefan
2020-06-06 17:37 ` Danny Milosavljevic
[not found] ` <46CD97B3-9994-4AB7-AA7D-4DE39AB7A238@vodafonemail.de>
2020-06-09 13:44 ` Danny Milosavljevic
2020-06-09 14:25 ` Stefan
2020-06-11 4:21 ` Maxim Cournoyer
2020-06-11 11:36 ` Stefan
2020-06-11 13:07 ` Maxim Cournoyer
2020-06-11 13:19 ` Danny Milosavljevic
2020-06-12 14:41 ` Stefan
2020-06-14 18:56 ` Maxim Cournoyer
2020-06-11 23:43 ` [bug#41820] [PATCH] file-systems: Add record type <nfs-share> for a file system device Stefan
2020-06-20 13:52 ` Stefan
2020-06-12 0:06 ` [bug#41011] [PATCH] gnu: grub: Support for network boot via tftp/nfs Stefan
2020-06-14 19:09 ` Maxim Cournoyer
2020-06-17 13:12 ` Stefan
2020-09-05 11:25 ` Stefan
2020-09-06 13:07 ` Stefan
2020-09-06 14:35 ` Danny Milosavljevic
2020-09-06 15:14 ` Danny Milosavljevic
2020-09-07 22:59 ` Stefan
2020-09-08 22:37 ` Danny Milosavljevic
2020-09-13 17:46 ` [bug#41011] [PATCH] gnu: grub: Support for network boot via TFTP Stefan
2020-09-14 6:59 ` Efraim Flashner [this message]
2020-09-15 20:28 ` Stefan
2020-09-16 7:51 ` Efraim Flashner
2020-09-19 17:54 ` Stefan
2020-09-20 11:47 ` Stefan
2020-09-20 11:56 ` Stefan
2020-09-26 10:52 ` Stefan
2020-09-26 10:54 ` Stefan
2020-09-26 16:13 ` Danny Milosavljevic
2020-09-27 10:50 ` Stefan
2020-09-27 10:51 ` Stefan
2020-09-27 11:47 ` Danny Milosavljevic
2020-09-14 12:34 ` Danny Milosavljevic
2020-09-15 22:10 ` Danny Milosavljevic
2020-09-27 11:57 ` bug#41011: " Stefan
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