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authorLudovic Courtès <ludo@gnu.org>2014-09-03 11:14:12 +0200
committerLudovic Courtès <ludo@gnu.org>2014-09-03 15:43:07 +0200
commit8a9e21d1f719748213414343cd02ec113ebe90c1 (patch)
treea797acf09699ec6f233e88c6ccef23eeddd83185 /gnu/build/linux-initrd.scm
parent548f7a8fa2a4745d0e35e175e201513857440991 (diff)
Rename (gnu build linux-initrd) to (gnu build linux-boot).
* gnu/build/linux-initrd.scm: Rename to... * gnu/build/linux-boot.scm: ... this. * gnu-system.am (GNU_SYSTEM_MODULES): Adjust accordingly. * gnu/build/activation.scm, gnu/build/vm.scm, gnu/services/base.scm, gnu/services/dmd.scm, gnu/system.scm, gnu/system/linux-initrd.scm, gnu/system/vm.scm: Adjust accordingly.
Diffstat (limited to 'gnu/build/linux-initrd.scm')
-rw-r--r--gnu/build/linux-initrd.scm702
1 files changed, 0 insertions, 702 deletions
diff --git a/gnu/build/linux-initrd.scm b/gnu/build/linux-initrd.scm
deleted file mode 100644
index 60c5eec10f..0000000000
--- a/gnu/build/linux-initrd.scm
+++ /dev/null
@@ -1,702 +0,0 @@
-;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
-;;;
-;;; This file is part of GNU Guix.
-;;;
-;;; GNU Guix is free software; you can redistribute it and/or modify it
-;;; under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation; either version 3 of the License, or (at
-;;; your option) any later version.
-;;;
-;;; GNU Guix is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (gnu build linux-initrd)
- #:use-module (rnrs io ports)
- #:use-module (rnrs bytevectors)
- #:use-module (system foreign)
- #:use-module (system repl error-handling)
- #:autoload (system repl repl) (start-repl)
- #:autoload (system base compile) (compile-file)
- #:use-module (srfi srfi-1)
- #:use-module (srfi srfi-26)
- #:use-module (ice-9 match)
- #:use-module (ice-9 rdelim)
- #:use-module (ice-9 ftw)
- #:use-module (guix build utils)
- #:export (mount-essential-file-systems
- linux-command-line
- find-long-option
- make-essential-device-nodes
- configure-qemu-networking
-
- disk-partitions
- partition-label-predicate
- find-partition-by-label
- canonicalize-device-spec
-
- mount-flags->bit-mask
- check-file-system
- mount-file-system
- bind-mount
-
- load-linux-module*
- device-number
- boot-system))
-
-;;; Commentary:
-;;;
-;;; Utility procedures useful in a Linux initial RAM disk (initrd). Note that
-;;; many of these use procedures not yet available in vanilla Guile (`mount',
-;;; `load-linux-module', etc.); these are provided by a Guile patch used in
-;;; the GNU distribution.
-;;;
-;;; Code:
-
-(define* (mount-essential-file-systems #:key (root "/"))
- "Mount /proc and /sys under ROOT."
- (define (scope dir)
- (string-append root
- (if (string-suffix? "/" root)
- ""
- "/")
- dir))
-
- (unless (file-exists? (scope "proc"))
- (mkdir (scope "proc")))
- (mount "none" (scope "proc") "proc")
-
- (unless (file-exists? (scope "sys"))
- (mkdir (scope "sys")))
- (mount "none" (scope "sys") "sysfs"))
-
-(define (move-essential-file-systems root)
- "Move currently mounted essential file systems to ROOT."
- (for-each (lambda (dir)
- (let ((target (string-append root dir)))
- (unless (file-exists? target)
- (mkdir target))
- (mount dir target "" MS_MOVE)))
- '("/proc" "/sys")))
-
-(define (linux-command-line)
- "Return the Linux kernel command line as a list of strings."
- (string-tokenize
- (call-with-input-file "/proc/cmdline"
- get-string-all)))
-
-(define (find-long-option option arguments)
- "Find OPTION among ARGUMENTS, where OPTION is something like \"--load\".
-Return the value associated with OPTION, or #f on failure."
- (let ((opt (string-append option "=")))
- (and=> (find (cut string-prefix? opt <>)
- arguments)
- (lambda (arg)
- (substring arg (+ 1 (string-index arg #\=)))))))
-
-(define-syntax %ext2-endianness
- ;; Endianness of ext2 file systems.
- (identifier-syntax (endianness little)))
-
-;; Offset in bytes of interesting parts of an ext2 superblock. See
-;; <http://www.nongnu.org/ext2-doc/ext2.html#DEF-SUPERBLOCK>.
-;; TODO: Use "packed structs" from Guile-OpenGL or similar.
-(define-syntax %ext2-sblock-magic (identifier-syntax 56))
-(define-syntax %ext2-sblock-creator-os (identifier-syntax 72))
-(define-syntax %ext2-sblock-uuid (identifier-syntax 104))
-(define-syntax %ext2-sblock-volume-name (identifier-syntax 120))
-
-(define (read-ext2-superblock device)
- "Return the raw contents of DEVICE's ext2 superblock as a bytevector, or #f
-if DEVICE does not contain an ext2 file system."
- (define %ext2-magic
- ;; The magic bytes that identify an ext2 file system.
- #xef53)
-
- (define superblock-size
- ;; Size of the interesting part of an ext2 superblock.
- 264)
-
- (define block
- ;; The superblock contents.
- (make-bytevector superblock-size))
-
- (call-with-input-file device
- (lambda (port)
- (seek port 1024 SEEK_SET)
-
- ;; Note: work around <http://bugs.gnu.org/17466>.
- (and (eqv? superblock-size (get-bytevector-n! port block 0
- superblock-size))
- (let ((magic (bytevector-u16-ref block %ext2-sblock-magic
- %ext2-endianness)))
- (and (= magic %ext2-magic)
- block))))))
-
-(define (ext2-superblock-uuid sblock)
- "Return the UUID of ext2 superblock SBLOCK as a 16-byte bytevector."
- (let ((uuid (make-bytevector 16)))
- (bytevector-copy! sblock %ext2-sblock-uuid uuid 0 16)
- uuid))
-
-(define (ext2-superblock-volume-name sblock)
- "Return the volume name of SBLOCK as a string of at most 16 characters, or
-#f if SBLOCK has no volume name."
- (let ((bv (make-bytevector 16)))
- (bytevector-copy! sblock %ext2-sblock-volume-name bv 0 16)
-
- ;; This is a Latin-1, nul-terminated string.
- (let ((bytes (take-while (negate zero?) (bytevector->u8-list bv))))
- (if (null? bytes)
- #f
- (list->string (map integer->char bytes))))))
-
-(define (disk-partitions)
- "Return the list of device names corresponding to valid disk partitions."
- (define (partition? major minor)
- (let ((marker (format #f "/sys/dev/block/~a:~a/partition" major minor)))
- (catch 'system-error
- (lambda ()
- (not (zero? (call-with-input-file marker read))))
- (lambda args
- (if (= ENOENT (system-error-errno args))
- #f
- (apply throw args))))))
-
- (call-with-input-file "/proc/partitions"
- (lambda (port)
- ;; Skip the two header lines.
- (read-line port)
- (read-line port)
-
- ;; Read each subsequent line, and extract the last space-separated
- ;; field.
- (let loop ((parts '()))
- (let ((line (read-line port)))
- (if (eof-object? line)
- (reverse parts)
- (match (string-tokenize line)
- (((= string->number major) (= string->number minor)
- blocks name)
- (if (partition? major minor)
- (loop (cons name parts))
- (loop parts))))))))))
-
-(define (partition-label-predicate label)
- "Return a procedure that, when applied to a partition name such as \"sda1\",
-return #t if that partition's volume name is LABEL."
- (lambda (part)
- (let* ((device (string-append "/dev/" part))
- (sblock (catch 'system-error
- (lambda ()
- (read-ext2-superblock device))
- (lambda args
- ;; When running on the hand-made /dev,
- ;; 'disk-partitions' could return partitions for which
- ;; we have no /dev node. Handle that gracefully.
- (if (= ENOENT (system-error-errno args))
- (begin
- (format (current-error-port)
- "warning: device '~a' not found~%"
- device)
- #f)
- (apply throw args))))))
- (and sblock
- (let ((volume (ext2-superblock-volume-name sblock)))
- (and volume
- (string=? volume label)))))))
-
-(define (find-partition-by-label label)
- "Return the first partition found whose volume name is LABEL, or #f if none
-were found."
- (and=> (find (partition-label-predicate label)
- (disk-partitions))
- (cut string-append "/dev/" <>)))
-
-(define* (canonicalize-device-spec spec #:optional (title 'any))
- "Return the device name corresponding to SPEC. TITLE is a symbol, one of
-the following:
-
- • 'device', in which case SPEC is known to designate a device node--e.g.,
- \"/dev/sda1\";
- • 'label', in which case SPEC is known to designate a partition label--e.g.,
- \"my-root-part\";
- • 'any', in which case SPEC can be anything.
-"
- (define max-trials
- ;; Number of times we retry partition label resolution, 1 second per
- ;; trial. Note: somebody reported a delay of 16 seconds (!) before their
- ;; USB key would be detected by the kernel, so we must wait for at least
- ;; this long.
- 20)
-
- (define canonical-title
- ;; The realm of canonicalization.
- (if (eq? title 'any)
- (if (string-prefix? "/" spec)
- 'device
- 'label)
- title))
-
- (case canonical-title
- ((device)
- ;; Nothing to do.
- spec)
- ((label)
- ;; Resolve the label.
- (let loop ((count 0))
- (let ((device (find-partition-by-label spec)))
- (or device
- ;; Some devices take a bit of time to appear, most notably USB
- ;; storage devices. Thus, wait for the device to appear.
- (if (> count max-trials)
- (error "failed to resolve partition label" spec)
- (begin
- (format #t "waiting for partition '~a' to appear...~%"
- spec)
- (sleep 1)
- (loop (+ 1 count))))))))
- ;; TODO: Add support for UUIDs.
- (else
- (error "unknown device title" title))))
-
-(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!
-
- (define (scope dir)
- (string-append root
- (if (string-suffix? "/" root)
- ""
- "/")
- dir))
-
- (unless (file-exists? (scope "dev"))
- (mkdir (scope "dev")))
-
- ;; Make the device nodes for SCSI disks.
- (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.
- (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))
- (mknod (scope "dev/kmem") 'char-special #o640 (device-number 1 2))
-
- ;; Inputs (used by Xorg.)
- (unless (file-exists? (scope "dev/input"))
- (mkdir (scope "dev/input")))
- (mknod (scope "dev/input/mice") 'char-special #o640 (device-number 13 63))
- (mknod (scope "dev/input/mouse0") 'char-special #o640 (device-number 13 32))
- (mknod (scope "dev/input/event0") 'char-special #o640 (device-number 13 64))
-
- ;; System console. This node is magically created by the kernel on the
- ;; initrd's root, so don't try to create it in that case.
- (unless (string=? root "/")
- (mknod (scope "dev/console") 'char-special #o600
- (device-number 5 1)))
-
- ;; TTYs.
- (mknod (scope "dev/tty") 'char-special #o600
- (device-number 5 0))
- (chmod (scope "dev/tty") #o666)
- (let loop ((n 0))
- (and (< n 50)
- (let ((name (format #f "dev/tty~a" n)))
- (mknod (scope name) 'char-special #o600
- (device-number 4 n))
- (loop (+ 1 n)))))
-
- ;; Serial line.
- (mknod (scope "dev/ttyS0") 'char-special #o660
- (device-number 4 64))
-
- ;; Pseudo ttys.
- (mknod (scope "dev/ptmx") 'char-special #o666
- (device-number 5 2))
- (chmod (scope "dev/ptmx") #o666)
-
- ;; Create /dev/pts; it will be mounted later, at boot time.
- (unless (file-exists? (scope "dev/pts"))
- (mkdir (scope "dev/pts")))
-
- ;; Rendez-vous point for syslogd.
- (mknod (scope "dev/log") 'socket #o666 0)
- (mknod (scope "dev/kmsg") 'char-special #o600 (device-number 1 11))
-
- ;; Other useful nodes, notably relied on by guix-daemon.
- (for-each (match-lambda
- ((file major minor)
- (mknod (scope file) 'char-special #o666
- (device-number major minor))
- (chmod (scope file) #o666)))
- '(("dev/null" 1 3)
- ("dev/zero" 1 5)
- ("dev/full" 1 7)
- ("dev/random" 1 8)
- ("dev/urandom" 1 9)))
-
- (symlink "/proc/self/fd" (scope "dev/fd"))
- (symlink "/proc/self/fd/0" (scope "dev/stdin"))
- (symlink "/proc/self/fd/1" (scope "dev/stdout"))
- (symlink "/proc/self/fd/2" (scope "dev/stderr"))
-
- ;; Loopback devices.
- (let loop ((i 0))
- (when (< i 8)
- (mknod (scope (string-append "dev/loop" (number->string i)))
- 'block-special #o660
- (device-number 7 i))
- (loop (+ 1 i))))
-
- ;; File systems in user space (FUSE).
- (mknod (scope "dev/fuse") 'char-special #o666 (device-number 10 229)))
-
-(define %host-qemu-ipv4-address
- (inet-pton AF_INET "10.0.2.10"))
-
-(define* (configure-qemu-networking #:optional (interface "eth0"))
- "Setup the INTERFACE network interface and /etc/resolv.conf according to
-QEMU's default networking settings (see net/slirp.c in QEMU for default
-networking values.) Return #t if INTERFACE is up, #f otherwise."
- (display "configuring QEMU networking...\n")
- (let* ((sock (socket AF_INET SOCK_STREAM 0))
- (address (make-socket-address AF_INET %host-qemu-ipv4-address 0))
- (flags (network-interface-flags sock interface)))
- (set-network-interface-address sock interface address)
- (set-network-interface-flags sock interface (logior flags IFF_UP))
-
- ;; Hello! We used to create /etc/resolv.conf here, with "nameserver
- ;; 10.0.2.3\n". However, with Linux-libre 3.16, we're getting ENOSPC.
- ;; And since it's actually unnecessary, it's gone.
-
- (logand (network-interface-flags sock interface) IFF_UP)))
-
-;; Linux mount flags, from libc's <sys/mount.h>.
-(define MS_RDONLY 1)
-(define MS_NOSUID 2)
-(define MS_NODEV 4)
-(define MS_NOEXEC 8)
-(define MS_BIND 4096)
-(define MS_MOVE 8192)
-
-(define (bind-mount source target)
- "Bind-mount SOURCE at TARGET."
- (mount source target "" MS_BIND))
-
-(define (load-linux-module* file)
- "Load Linux module from FILE, the name of a `.ko' file."
- (define (slurp module)
- (call-with-input-file file get-bytevector-all))
-
- (load-linux-module (slurp file)))
-
-(define (device-number major minor)
- "Return the device number for the device with MAJOR and MINOR, for use as
-the last argument of `mknod'."
- (+ (* major 256) minor))
-
-(define (pidof program)
- "Return the PID of the first presumed instance of PROGRAM."
- (let ((program (basename program)))
- (find (lambda (pid)
- (let ((exe (format #f "/proc/~a/exe" pid)))
- (and=> (false-if-exception (readlink exe))
- (compose (cut string=? program <>) basename))))
- (filter-map string->number (scandir "/proc")))))
-
-(define* (mount-root-file-system root type
- #:key volatile-root? (unionfs "unionfs"))
- "Mount the root file system of type TYPE at device ROOT. If VOLATILE-ROOT?
-is true, mount ROOT read-only and make it a union with a writable tmpfs using
-UNIONFS."
- (define (mark-as-not-killable pid)
- ;; Tell the 'user-processes' dmd service that PID must be kept alive when
- ;; shutting down.
- (mkdir-p "/root/etc/dmd")
- (let ((port (open-file "/root/etc/dmd/do-not-kill" "a")))
- (chmod port #o600)
- (write pid port)
- (newline port)
- (close-port port)))
-
- (catch #t
- (lambda ()
- (if volatile-root?
- (begin
- (mkdir-p "/real-root")
- (mount root "/real-root" type MS_RDONLY)
- (mkdir-p "/rw-root")
- (mount "none" "/rw-root" "tmpfs")
-
- ;; We want read-write /dev nodes.
- (make-essential-device-nodes #:root "/rw-root")
-
- ;; Make /root a union of the tmpfs and the actual root. Use
- ;; 'max_files' to set a high RLIMIT_NOFILE for the unionfs process
- ;; itself. Failing to do that, we quickly run out of file
- ;; descriptors; see <http://bugs.gnu.org/17827>.
- (unless (zero? (system* unionfs "-o"
- "cow,allow_other,use_ino,suid,dev,max_files=65536"
- "/rw-root=RW:/real-root=RO"
- "/root"))
- (error "unionfs failed"))
-
- ;; Make sure unionfs remains alive till the end. Because
- ;; 'fuse_daemonize' doesn't tell the PID of the forked daemon, we
- ;; have to resort to 'pidof' here.
- (mark-as-not-killable (pidof unionfs)))
- (begin
- (check-file-system root type)
- (mount root "/root" type))))
- (lambda args
- (format (current-error-port) "exception while mounting '~a': ~s~%"
- root args)
- (start-repl)))
-
- (copy-file "/proc/mounts" "/root/etc/mtab"))
-
-(define (check-file-system device type)
- "Run a file system check of TYPE on DEVICE."
- (define fsck
- (string-append "fsck." type))
-
- (let ((status (system* fsck "-v" "-p" device)))
- (match (status:exit-val status)
- (0
- #t)
- (1
- (format (current-error-port) "'~a' corrected errors on ~a; continuing~%"
- fsck device))
- (2
- (format (current-error-port) "'~a' corrected errors on ~a; rebooting~%"
- fsck device)
- (sleep 3)
- (reboot))
- (code
- (format (current-error-port) "'~a' exited with code ~a on ~a; spawning REPL~%"
- fsck code device)
- (start-repl)))))
-
-(define (mount-flags->bit-mask flags)
- "Return the number suitable for the 'flags' argument of 'mount' that
-corresponds to the symbols listed in FLAGS."
- (let loop ((flags flags))
- (match flags
- (('read-only rest ...)
- (logior MS_RDONLY (loop rest)))
- (('bind-mount rest ...)
- (logior MS_BIND (loop rest)))
- (('no-suid rest ...)
- (logior MS_NOSUID (loop rest)))
- (('no-dev rest ...)
- (logior MS_NODEV (loop rest)))
- (('no-exec rest ...)
- (logior MS_NOEXEC (loop rest)))
- (()
- 0))))
-
-(define* (mount-file-system spec #:key (root "/root"))
- "Mount the file system described by SPEC under ROOT. SPEC must have the
-form:
-
- (DEVICE TITLE MOUNT-POINT TYPE (FLAGS ...) OPTIONS CHECK?)
-
-DEVICE, MOUNT-POINT, and TYPE must be strings; OPTIONS can be a string or #f;
-FLAGS must be a list of symbols. CHECK? is a Boolean indicating whether to
-run a file system check."
- (match spec
- ((source title mount-point type (flags ...) options check?)
- (let ((source (canonicalize-device-spec source title))
- (mount-point (string-append root "/" mount-point)))
- (when check?
- (check-file-system source type))
- (mkdir-p mount-point)
- (mount source mount-point type (mount-flags->bit-mask flags)
- (if options
- (string->pointer options)
- %null-pointer))
-
- ;; Update /etc/mtab.
- (mkdir-p (string-append root "/etc"))
- (let ((port (open-file (string-append root "/etc/mtab") "a")))
- (format port "~a ~a ~a ~a 0 0~%"
- source mount-point type (or options ""))
- (close-port port))))))
-
-(define (switch-root root)
- "Switch to ROOT as the root file system, in a way similar to what
-util-linux' switch_root(8) does."
- (move-essential-file-systems root)
- (chdir root)
-
- ;; Since we're about to 'rm -rf /', try to make sure we're on an initrd.
- ;; TODO: Use 'statfs' to check the fs type, like klibc does.
- (when (or (not (file-exists? "/init")) (directory-exists? "/home"))
- (format (current-error-port)
- "The root file system is probably not an initrd; \
-bailing out.~%root contents: ~s~%" (scandir "/"))
- (force-output (current-error-port))
- (exit 1))
-
- ;; Delete files from the old root, without crossing mount points (assuming
- ;; there are no mount points in sub-directories.) That means we're leaving
- ;; the empty ROOT directory behind us, but that's OK.
- (let ((root-device (stat:dev (stat "/"))))
- (for-each (lambda (file)
- (unless (member file '("." ".."))
- (let* ((file (string-append "/" file))
- (device (stat:dev (lstat file))))
- (when (= device root-device)
- (delete-file-recursively file)))))
- (scandir "/")))
-
- ;; Make ROOT the new root.
- (mount root "/" "" MS_MOVE)
- (chroot ".")
- (chdir "/")
-
- (when (file-exists? "/dev/console")
- ;; Close the standard file descriptors since they refer to the old
- ;; /dev/console, and reopen them.
- (let ((console (open-file "/dev/console" "r+b0")))
- (for-each close-fdes '(0 1 2))
-
- (dup2 (fileno console) 0)
- (dup2 (fileno console) 1)
- (dup2 (fileno console) 2)
-
- (close-port console))))
-
-
-(define* (boot-system #:key
- (linux-modules '())
- qemu-guest-networking?
- guile-modules-in-chroot?
- volatile-root?
- (mounts '()))
- "This procedure is meant to be called from an initrd. Boot a system by
-first loading LINUX-MODULES, then setting up QEMU guest networking if
-QEMU-GUEST-NETWORKING? is true, mounting the file systems specified in MOUNTS,
-and finally booting into the new root if any. The initrd supports kernel
-command-line options '--load', '--root', and '--repl'.
-
-Mount the root file system, specified by the '--root' command-line argument,
-if any.
-
-MOUNTS must be a list suitable for 'mount-file-system'.
-
-When GUILE-MODULES-IN-CHROOT? is true, make core Guile modules available in
-the new root.
-
-When VOLATILE-ROOT? is true, the root file system is writable but any changes
-to it are lost."
- (define root-mount-point?
- (match-lambda
- ((device _ "/" _ ...) #t)
- (_ #f)))
-
- (define root-fs-type
- (or (any (match-lambda
- ((device _ "/" type _ ...) type)
- (_ #f))
- mounts)
- "ext4"))
-
- (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")
- (for-each (compose load-linux-module*
- (cut string-append "/modules/" <>))
- linux-modules)
-
- (when qemu-guest-networking?
- (unless (configure-qemu-networking)
- (display "network interface is DOWN\n")))
-
- ;; Make /dev nodes.
- (make-essential-device-nodes)
-
- ;; Prepare the real root file system under /root.
- (unless (file-exists? "/root")
- (mkdir "/root"))
- (if root
- (mount-root-file-system (canonicalize-device-spec root)
- root-fs-type
- #:volatile-root? volatile-root?)
- (mount "none" "/root" "tmpfs"))
-
- (unless (file-exists? "/root/dev")
- (mkdir "/root/dev")
- (make-essential-device-nodes #:root "/root"))
-
- ;; Mount the specified file systems.
- (for-each mount-file-system
- (remove root-mount-point? mounts))
-
- (when guile-modules-in-chroot?
- ;; Copy the directories that contain .scm and .go files so that the
- ;; child process in the chroot can load modules (we would bind-mount
- ;; them but for some reason that fails with EINVAL -- XXX).
- (mkdir-p "/root/share")
- (mkdir-p "/root/lib")
- (mount "none" "/root/share" "tmpfs")
- (mount "none" "/root/lib" "tmpfs")
- (copy-recursively "/share" "/root/share"
- #:log (%make-void-port "w"))
- (copy-recursively "/lib" "/root/lib"
- #:log (%make-void-port "w")))
-
- (if to-load
- (begin
- (switch-root "/root")
- (format #t "loading '~a'...\n" to-load)
-
- ;; TODO: Remove /lib, /share, and /loader.go.
- (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)))))))
-
-;;; linux-initrd.scm ends here