mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-26 14:28:15 -05:00
69fc67b6bb
Fixes a regression introduced in450f774028ande3c6575ee9, which introduced unquote-splicing without changing quote to quasiquote. * gnu/build/hurd-boot.scm (set-hurd-device-translators)[devices]: Use quasiquote, note quote.
312 lines
12 KiB
Scheme
312 lines
12 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2020-2022 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@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 hurd-boot)
|
||
#:use-module (system repl error-handling)
|
||
#:autoload (system repl repl) (start-repl)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-26)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (guix build utils)
|
||
#:use-module ((guix build syscalls)
|
||
#:hide (file-system-type))
|
||
#:export (make-hurd-device-nodes
|
||
boot-hurd-system))
|
||
|
||
;;; Commentary:
|
||
;;;
|
||
;;; Utility procedures useful to boot a Hurd system.
|
||
;;;
|
||
;;; Code:
|
||
|
||
;; XXX FIXME c&p from linux-boot.scm
|
||
(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 #\=)))))))
|
||
|
||
;; XXX FIXME c&p from guix/utils.scm
|
||
(define (readlink* file)
|
||
"Call 'readlink' until the result is not a symlink."
|
||
(define %max-symlink-depth 50)
|
||
|
||
(let loop ((file file)
|
||
(depth 0))
|
||
(define (absolute target)
|
||
(if (absolute-file-name? target)
|
||
target
|
||
(string-append (dirname file) "/" target)))
|
||
|
||
(if (>= depth %max-symlink-depth)
|
||
file
|
||
(call-with-values
|
||
(lambda ()
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(values #t (readlink file)))
|
||
(lambda args
|
||
(let ((errno (system-error-errno args)))
|
||
(if (or (= errno EINVAL))
|
||
(values #f file)
|
||
(apply throw args))))))
|
||
(lambda (success? target)
|
||
(if success?
|
||
(loop (absolute target) (+ depth 1))
|
||
file))))))
|
||
|
||
(define* (make-hurd-device-nodes #:optional (root "/"))
|
||
"Make some of the nodes needed on GNU/Hurd."
|
||
(define (scope dir)
|
||
(string-append root (if (string-suffix? "/" root) "" "/") dir))
|
||
|
||
(mkdir (scope "dev"))
|
||
;; Don't create /dev/null etc just yet; the store
|
||
;; messes-up the permission bits.
|
||
;; Don't create /dev/console, /dev/vcs, etc.: they are created by
|
||
;; console-run on first boot.
|
||
|
||
(mkdir (scope "servers"))
|
||
(for-each (lambda (file)
|
||
(call-with-output-file (scope (string-append "servers/" file))
|
||
(lambda (port)
|
||
(display file port) ;avoid hard-linking
|
||
(chmod port #o444))))
|
||
'("startup"
|
||
"exec"
|
||
"proc"
|
||
"password"
|
||
"default-pager"
|
||
"crash-dump-core"
|
||
"kill"
|
||
"suspend"))
|
||
|
||
(mkdir (scope "servers/socket"))
|
||
;; Don't create /servers/socket/1 & co: runsystem does that on first boot.
|
||
|
||
;; TODO: Set the 'gnu.translator' extended attribute for passive translator
|
||
;; settings?
|
||
)
|
||
|
||
(define (passive-translator-xattr? file-name)
|
||
"Return true if FILE-NAME has an extended @code{gnu.translator} attribute
|
||
set."
|
||
(catch 'system-error
|
||
(lambda _ (not (string-null? (getxattr file-name "gnu.translator"))))
|
||
(lambda args
|
||
(if (= ENODATA (system-error-errno args))
|
||
#f
|
||
(apply throw args)))))
|
||
|
||
(define (passive-translator-installed? file-name)
|
||
"Return true if @file{showtrans} finds a translator installed on FILE-NAME."
|
||
(with-output-to-port (%make-void-port "w")
|
||
(lambda _
|
||
(with-error-to-port (%make-void-port "w")
|
||
(lambda _
|
||
(zero? (system* "showtrans" "--silent" file-name)))))))
|
||
|
||
(define (translated? file-name)
|
||
"Return true if a translator is installed on FILE-NAME."
|
||
;; On GNU/Hurd, 'getxattr' in glibc opens the file without O_NOTRANS, and
|
||
;; then, for "gnu.translator", it calls 'file_get_translator', resulting in
|
||
;; EOPNOTSUPP (conversely, 'showtrans' opens the file with O_NOTRANS).
|
||
(if (string-contains %host-type "linux-gnu")
|
||
(passive-translator-xattr? file-name)
|
||
(passive-translator-installed? file-name)))
|
||
|
||
(define* (set-translator file-name command #:optional (mode #o600))
|
||
"Setup translator COMMAND on FILE-NAME."
|
||
(unless (translated? file-name)
|
||
(let ((dir (dirname file-name)))
|
||
(unless (directory-exists? dir)
|
||
(mkdir-p dir))
|
||
(unless (file-exists? file-name)
|
||
(call-with-output-file file-name
|
||
(lambda (port)
|
||
(display file-name port) ;avoid hard-linking
|
||
(chmod port mode)))))
|
||
(catch 'system-error
|
||
(lambda _
|
||
(setxattr file-name "gnu.translator" (string-join command "\0" 'suffix)))
|
||
(lambda (key . args)
|
||
(let ((errno (system-error-errno (cons key args))))
|
||
(format (current-error-port) "~a: ~a\n"
|
||
(strerror errno) file-name)
|
||
(format (current-error-port) "Ignoring...Good Luck!\n"))))))
|
||
|
||
(define-syntax-rule (false-if-EEXIST exp)
|
||
"Evaluate EXP but return #f if it raises to 'system-error with EEXIST."
|
||
(catch 'system-error
|
||
(lambda () exp)
|
||
(lambda args
|
||
(if (= EEXIST (system-error-errno args))
|
||
#f
|
||
(apply throw args)))))
|
||
|
||
(define* (set-hurd-device-translators #:optional (root "/"))
|
||
"Make some of the device nodes needed on GNU/Hurd."
|
||
|
||
(define (scope dir)
|
||
(string-append root (if (string-suffix? "/" root) "" "/") dir))
|
||
|
||
(define scope-set-translator
|
||
(match-lambda
|
||
((file-name command)
|
||
(scope-set-translator (list file-name command #o600)))
|
||
((file-name command mode)
|
||
(let ((mount-point (scope file-name)))
|
||
(set-translator mount-point command mode)))))
|
||
|
||
(define (mkdir* dir)
|
||
(let ((dir (scope dir)))
|
||
(unless (file-exists? dir)
|
||
(mkdir-p dir))))
|
||
|
||
(define servers
|
||
'(("servers/crash-dump-core" ("/hurd/crash" "--dump-core"))
|
||
("servers/crash-kill" ("/hurd/crash" "--kill"))
|
||
("servers/crash-suspend" ("/hurd/crash" "--suspend"))
|
||
("servers/password" ("/hurd/password"))
|
||
("servers/socket/1" ("/hurd/pflocal"))
|
||
;; /servers/socket/2 and /26 are created by 'static-networking-service'.
|
||
;; XXX: Spawn pfinet without arguments on these nodes so that a DHCP
|
||
;; client has someone to talk to?
|
||
("proc" ("/hurd/procfs" "--stat-mode=444"))))
|
||
|
||
(define devices
|
||
`(("dev/full" ("/hurd/null" "--full") #o666)
|
||
("dev/null" ("/hurd/null") #o666)
|
||
("dev/random" ("/hurd/random" "--seed-file" "/var/lib/random-seed")
|
||
#o644)
|
||
("dev/zero" ("/hurd/storeio" "--store-type=zero") #o666)
|
||
|
||
("dev/console" ("/hurd/term" "/dev/console" "device" "console"))
|
||
|
||
("dev/klog" ("/hurd/streamio" "kmsg"))
|
||
("dev/mem" ("/hurd/storeio" "--no-cache" "mem") #o660)
|
||
("dev/shm" ("/hurd/tmpfs" "--mode=1777" "50%") #o644)
|
||
("dev/time" ("/hurd/storeio" "--no-cache" "time") #o644)
|
||
|
||
("dev/vcs" ("/hurd/console"))
|
||
("dev/tty" ("/hurd/magic" "tty") #o666)
|
||
|
||
;; 'fd_to_filename' in libc expects it.
|
||
("dev/fd" ("/hurd/magic" "--directory" "fd") #o555)
|
||
|
||
;; Create a number of ttys; syslogd writes to tty12 by default.
|
||
;; FIXME: Creating /dev/tty12 leads the console client to switch to
|
||
;; tty12 when syslogd starts, which is confusing for users. Thus, do
|
||
;; not create tty12.
|
||
,@(map (lambda (n)
|
||
(let ((n (number->string n)))
|
||
`(,(string-append "dev/tty" n)
|
||
("/hurd/term" ,(string-append "/dev/tty" n)
|
||
"hurdio" ,(string-append "/dev/vcs/" n "/console"))
|
||
#o666)))
|
||
(iota 11 1))
|
||
|
||
,@(append-map (lambda (n)
|
||
(let ((n (number->string n)))
|
||
`((,(string-append "dev/ptyp" n)
|
||
("/hurd/term" ,(string-append "/dev/ptyp" n)
|
||
"pty-master" ,(string-append "/dev/ttyp" n))
|
||
#o666)
|
||
|
||
(,(string-append "dev/ttyp" n)
|
||
("/hurd/term" ,(string-append "/dev/ttyp" n)
|
||
"pty-slave" ,(string-append "/dev/ptyp" n))
|
||
#o666))))
|
||
(iota 10 0))))
|
||
|
||
(for-each scope-set-translator servers)
|
||
(mkdir* "dev/vcs/1")
|
||
(mkdir* "dev/vcs/2")
|
||
(rename-file (scope "dev/console") (scope "dev/console-"))
|
||
(for-each scope-set-translator devices)
|
||
|
||
(false-if-EEXIST (symlink "/dev/random" (scope "dev/urandom")))
|
||
(false-if-EEXIST (symlink "/dev/fd/0" (scope "dev/stdin")))
|
||
(false-if-EEXIST (symlink "/dev/fd/1" (scope "dev/stdout")))
|
||
(false-if-EEXIST (symlink "/dev/fd/2" (scope "dev/stderr")))
|
||
(false-if-EEXIST (symlink "crash-dump-core" (scope "servers/crash")))
|
||
|
||
;; Make sure /etc/mtab is a symlink to /proc/mounts.
|
||
(false-if-exception (delete-file (scope "etc/mtab")))
|
||
(mkdir* (scope "etc"))
|
||
(symlink "/proc/mounts" (scope "etc/mtab")))
|
||
|
||
|
||
(define* (boot-hurd-system #:key (on-error 'debug))
|
||
"This procedure is meant to be called from an early RC script.
|
||
|
||
Install the relevant passive translators on the first boot. Then, run system
|
||
activation by using the kernel command-line options 'gnu.system' and 'gnu.load';
|
||
starting the Shepherd.
|
||
|
||
XXX TODO: see linux-boot.scm:boot-system.
|
||
XXX TODO: add proper file-system checking, mounting
|
||
XXX TODO: move bits to (new?) (hurd?) (activation?) services
|
||
XXX TODO: use Linux xattr/setxattr to remove (settrans in) /libexec/RUNSYSTEM
|
||
|
||
"
|
||
|
||
(display "Welcome, this is GNU's early boot Guile.\n")
|
||
(display "Use 'gnu.repl' for an initrd REPL.\n\n")
|
||
|
||
(call-with-error-handling
|
||
(lambda ()
|
||
|
||
(let* ((args (command-line))
|
||
(system (find-long-option "gnu.system" args))
|
||
(to-load (find-long-option "gnu.load" args)))
|
||
|
||
(format #t "Setting-up essential translators...\n")
|
||
(setenv "PATH" (string-append system "/profile/bin"))
|
||
(set-hurd-device-translators)
|
||
|
||
(false-if-exception (delete-file "/hurd"))
|
||
(let ((hurd/hurd (readlink* (string-append system "/profile/hurd"))))
|
||
(symlink hurd/hurd "/hurd"))
|
||
|
||
(format #t "Starting pager...\n")
|
||
(unless (zero? (system* "/hurd/mach-defpager"))
|
||
(format #t "FAILED...Good luck!\n"))
|
||
|
||
(cond ((member "gnu.repl" args)
|
||
(format #t "Starting repl...\n")
|
||
(start-repl))
|
||
(to-load
|
||
(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))
|
||
(else
|
||
(display "no boot file passed via 'gnu.load'\n")
|
||
(display "entering a warm and cozy REPL\n")
|
||
(start-repl)))))
|
||
#:on-error on-error))
|
||
|
||
;;; hurd-boot.scm ends here
|