diff options
Diffstat (limited to 'gnu/build/linux-boot.scm')
| -rw-r--r-- | gnu/build/linux-boot.scm | 165 |
1 files changed, 87 insertions, 78 deletions
diff --git a/gnu/build/linux-boot.scm b/gnu/build/linux-boot.scm index 84a5447977..950a3507f2 100644 --- a/gnu/build/linux-boot.scm +++ b/gnu/build/linux-boot.scm @@ -1,6 +1,7 @@ ;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com> +;;; Copyright © 2019 Guillaume Le Vaillant <glv@posteo.net> ;;; ;;; This file is part of GNU Guix. ;;; @@ -357,15 +358,16 @@ the last argument of `mknod'." (filter-map string->number (scandir "/proc"))))) (define* (mount-root-file-system root type - #:key volatile-root?) + #:key volatile-root? options) "Mount the root file system of type TYPE at device ROOT. If VOLATILE-ROOT? is true, mount ROOT read-only and make it an overlay with a writable tmpfs -using the kernel built-in overlayfs." +using the kernel built-in overlayfs. OPTIONS indicates the options to use +to mount ROOT." (if volatile-root? (begin (mkdir-p "/real-root") - (mount root "/real-root" type MS_RDONLY) + (mount root "/real-root" type MS_RDONLY options) (mkdir-p "/rw-root") (mount "none" "/rw-root" "tmpfs") @@ -382,7 +384,7 @@ using the kernel built-in overlayfs." "lowerdir=/real-root,upperdir=/rw-root/upper,workdir=/rw-root/work")) (begin (check-file-system root type) - (mount root "/root" type))) + (mount root "/root" type 0 options))) ;; Make sure /root/etc/mtab is a symlink to /proc/self/mounts. (false-if-exception @@ -472,83 +474,90 @@ upon error." mounts) "ext4")) + (define root-fs-options + (any (lambda (fs) + (and (root-mount-point? fs) + (file-system-options fs))) + mounts)) + (display "Welcome, this is GNU's early boot Guile.\n") (display "Use '--repl' for an initrd REPL.\n\n") (call-with-error-handling - (lambda () - (mount-essential-file-systems) - (let* ((args (linux-command-line)) - (to-load (find-long-option "--load" args)) - (root (find-long-option "--root" args))) - - (when (member "--repl" args) - (start-repl)) - - (display "loading kernel modules...\n") - (load-linux-modules-from-directory linux-modules - linux-module-directory) - - (when keymap-file - (let ((status (system* "loadkeys" keymap-file))) - (unless (zero? status) - ;; Emit a warning rather than abort when we cannot load - ;; KEYMAP-FILE. - (format (current-error-port) - "warning: 'loadkeys' exited with status ~a~%" - status)))) - - (when qemu-guest-networking? - (unless (configure-qemu-networking) - (display "network interface is DOWN\n"))) - - ;; Prepare the real root file system under /root. - (unless (file-exists? "/root") - (mkdir "/root")) - - (when (procedure? pre-mount) - ;; Do whatever actions are needed before mounting the root file - ;; system--e.g., installing device mappings. Error out when the - ;; return value is false. - (unless (pre-mount) - (error "pre-mount actions failed"))) - - (setenv "EXT2FS_NO_MTAB_OK" "1") - - (if root - ;; The "--root=SPEC" kernel command-line option always provides a - ;; string, but the string can represent a device, a UUID, or a - ;; label. So check for all three. - (let ((root (cond ((string-prefix? "/" root) root) - ((uuid root) => identity) - (else (file-system-label root))))) - (mount-root-file-system (canonicalize-device-spec root) - root-fs-type - #:volatile-root? volatile-root?)) - (mount "none" "/root" "tmpfs")) - - ;; Mount the specified file systems. - (for-each mount-file-system - (remove root-mount-point? mounts)) - - (setenv "EXT2FS_NO_MTAB_OK" #f) - - (if to-load - (begin - (switch-root "/root") - (format #t "loading '~a'...\n" to-load) - - (primitive-load to-load) - - (format (current-error-port) - "boot program '~a' terminated, rebooting~%" - to-load) - (sleep 2) - (reboot)) - (begin - (display "no boot file passed via '--load'\n") - (display "entering a warm and cozy REPL\n") - (start-repl))))) - #:on-error on-error)) + (lambda () + (mount-essential-file-systems) + (let* ((args (linux-command-line)) + (to-load (find-long-option "--load" args)) + (root (find-long-option "--root" args))) + + (when (member "--repl" args) + (start-repl)) + + (display "loading kernel modules...\n") + (load-linux-modules-from-directory linux-modules + linux-module-directory) + + (when keymap-file + (let ((status (system* "loadkeys" keymap-file))) + (unless (zero? status) + ;; Emit a warning rather than abort when we cannot load + ;; KEYMAP-FILE. + (format (current-error-port) + "warning: 'loadkeys' exited with status ~a~%" + status)))) + + (when qemu-guest-networking? + (unless (configure-qemu-networking) + (display "network interface is DOWN\n"))) + + ;; Prepare the real root file system under /root. + (unless (file-exists? "/root") + (mkdir "/root")) + + (when (procedure? pre-mount) + ;; Do whatever actions are needed before mounting the root file + ;; system--e.g., installing device mappings. Error out when the + ;; return value is false. + (unless (pre-mount) + (error "pre-mount actions failed"))) + + (setenv "EXT2FS_NO_MTAB_OK" "1") + + (if root + ;; The "--root=SPEC" kernel command-line option always provides a + ;; string, but the string can represent a device, a UUID, or a + ;; label. So check for all three. + (let ((root (cond ((string-prefix? "/" root) root) + ((uuid root) => identity) + (else (file-system-label root))))) + (mount-root-file-system (canonicalize-device-spec root) + root-fs-type + #:volatile-root? volatile-root? + #:options root-fs-options)) + (mount "none" "/root" "tmpfs")) + + ;; Mount the specified file systems. + (for-each mount-file-system + (remove root-mount-point? mounts)) + + (setenv "EXT2FS_NO_MTAB_OK" #f) + + (if to-load + (begin + (switch-root "/root") + (format #t "loading '~a'...\n" to-load) + + (primitive-load to-load) + + (format (current-error-port) + "boot program '~a' terminated, rebooting~%" + to-load) + (sleep 2) + (reboot)) + (begin + (display "no boot file passed via '--load'\n") + (display "entering a warm and cozy REPL\n") + (start-repl))))) + #:on-error on-error)) ;;; linux-initrd.scm ends here |