1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
;;; 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 (guix build install)
#:use-module (guix build utils)
#:use-module (guix build install)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:export (install-grub
populate-root-file-system
reset-timestamps
register-closure))
;;; Commentary:
;;;
;;; This module supports the installation of the GNU system on a hard disk.
;;; It is meant to be used both in a build environment (in derivations that
;;; build VM images), and on the bare metal (when really installing the
;;; system.)
;;;
;;; Code:
(define* (install-grub grub.cfg device mount-point)
"Install GRUB with GRUB.CFG on DEVICE, which is assumed to be mounted on
MOUNT-POINT."
(let* ((target (string-append mount-point "/boot/grub/grub.cfg"))
(pivot (string-append target ".new")))
(mkdir-p (dirname target))
;; Copy GRUB.CFG instead of just symlinking it since it's not a GC root.
;; Do that atomically.
(copy-file grub.cfg pivot)
(rename-file pivot target)
(unless (zero? (system* "grub-install" "--no-floppy"
"--boot-directory"
(string-append mount-point "/boot")
device))
(error "failed to install GRUB"))))
(define (evaluate-populate-directive directive target)
"Evaluate DIRECTIVE, an sexp describing a file or directory to create under
directory TARGET."
(let loop ((directive directive))
(match directive
(('directory name)
(mkdir-p (string-append target name)))
(('directory name uid gid)
(let ((dir (string-append target name)))
(mkdir-p dir)
(chown dir uid gid)))
(('directory name uid gid mode)
(loop `(directory ,name ,uid ,gid))
(chmod (string-append target name) mode))
((new '-> old)
(symlink old (string-append target new))))))
(define (directives store)
"Return a list of directives to populate the root file system that will host
STORE."
`((directory ,store 0 0)
(directory "/etc")
(directory "/var/log") ; for dmd
(directory "/var/run/nscd")
(directory "/var/guix/gcroots")
(directory "/var/empty") ; for no-login accounts
(directory "/run")
("/var/guix/gcroots/booted-system" -> "/run/booted-system")
("/var/guix/gcroots/current-system" -> "/run/current-system")
(directory "/bin")
("/bin/sh" -> "/run/current-system/profile/bin/bash")
(directory "/tmp" 0 0 #o1777) ; sticky bit
(directory "/var/guix/profiles/per-user/root" 0 0)
(directory "/root" 0 0) ; an exception
(directory "/home" 0 0)))
(define (populate-root-file-system target)
"Make the essential non-store files and directories on TARGET. This
includes /etc, /var, /run, /bin/sh, etc."
(for-each (cut evaluate-populate-directive <> target)
(directives (%store-directory))))
(define (reset-timestamps directory)
"Reset the timestamps of all the files under DIRECTORY, so that they appear
as created and modified at the Epoch."
(display "clearing file timestamps...\n")
(for-each (lambda (file)
(let ((s (lstat file)))
;; XXX: Guile uses libc's 'utime' function (not 'futime'), so
;; the timestamp of symlinks cannot be changed, and there are
;; symlinks here pointing to /gnu/store, which is the host,
;; read-only store.
(unless (eq? (stat:type s) 'symlink)
(utime file 0 0 0 0))))
(find-files directory "")))
(define (register-closure store closure)
"Register CLOSURE in STORE, where STORE is the directory name of the target
store and CLOSURE is the name of a file containing a reference graph as used
by 'guix-register'. As a side effect, this resets timestamps on store files."
(let ((status (system* "guix-register" "--prefix" store
closure)))
(unless (zero? status)
(error "failed to register store items" closure))))
;;; install.scm ends here
|