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1 | ;;; GNU Guix --- Functional package management for GNU |
2 | ;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org> | |
3 | ;;; | |
4 | ;;; This file is part of GNU Guix. | |
5 | ;;; | |
6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
7 | ;;; under the terms of the GNU General Public License as published by | |
8 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
9 | ;;; your option) any later version. | |
10 | ;;; | |
11 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;; GNU General Public License for more details. | |
15 | ;;; | |
16 | ;;; You should have received a copy of the GNU General Public License | |
17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
18 | ||
19 | (define-module (gnu system file-systems) | |
722554a3 | 20 | #:use-module (guix gexp) |
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21 | #:use-module (guix records) |
22 | #:export (<file-system> | |
23 | file-system | |
24 | file-system? | |
25 | file-system-device | |
d4c87617 | 26 | file-system-title |
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27 | file-system-mount-point |
28 | file-system-type | |
29 | file-system-needed-for-boot? | |
30 | file-system-flags | |
31 | file-system-options | |
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32 | file-system-check? |
33 | file-system-create-mount-point? | |
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34 | |
35 | %fuse-control-file-system | |
a69576ea | 36 | %binary-format-file-system |
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37 | %shared-memory-file-system |
38 | %pseudo-terminal-file-system | |
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39 | %devtmpfs-file-system |
40 | ||
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41 | %base-file-systems |
42 | ||
43 | mapped-device | |
44 | mapped-device? | |
45 | mapped-device-source | |
46 | mapped-device-target | |
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47 | mapped-device-type |
48 | ||
49 | mapped-device-kind | |
50 | mapped-device-kind? | |
51 | mapped-device-kind-open | |
52 | mapped-device-kind-close)) | |
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53 | |
54 | ;;; Commentary: | |
55 | ;;; | |
56 | ;;; Declaring file systems to be mounted. | |
57 | ;;; | |
58 | ;;; Code: | |
59 | ||
60 | ;; File system declaration. | |
61 | (define-record-type* <file-system> file-system | |
62 | make-file-system | |
63 | file-system? | |
64 | (device file-system-device) ; string | |
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65 | (title file-system-title ; 'device | 'label | 'uuid |
66 | (default 'device)) | |
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67 | (mount-point file-system-mount-point) ; string |
68 | (type file-system-type) ; string | |
69 | (flags file-system-flags ; list of symbols | |
70 | (default '())) | |
71 | (options file-system-options ; string or #f | |
72 | (default #f)) | |
73 | (needed-for-boot? file-system-needed-for-boot? ; Boolean | |
74 | (default #f)) | |
75 | (check? file-system-check? ; Boolean | |
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76 | (default #t)) |
77 | (create-mount-point? file-system-create-mount-point? ; Boolean | |
78 | (default #f))) | |
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79 | |
80 | (define %fuse-control-file-system | |
81 | ;; Control file system for Linux' file systems in user-space (FUSE). | |
82 | (file-system | |
83 | (device "fusectl") | |
84 | (mount-point "/sys/fs/fuse/connections") | |
85 | (type "fusectl") | |
86 | (check? #f))) | |
87 | ||
88 | (define %binary-format-file-system | |
89 | ;; Support for arbitrary executable binary format. | |
90 | (file-system | |
91 | (device "binfmt_misc") | |
92 | (mount-point "/proc/sys/fs/binfmt_misc") | |
93 | (type "binfmt_misc") | |
94 | (check? #f))) | |
95 | ||
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96 | (define %devtmpfs-file-system |
97 | ;; /dev as a 'devtmpfs' file system, needed for udev. | |
98 | (file-system | |
99 | (device "none") | |
100 | (mount-point "/dev") | |
101 | (type "devtmpfs") | |
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102 | (check? #f) |
103 | ||
104 | ;; Mount it from the initrd so /dev/pts & co. can then be mounted over it. | |
105 | (needed-for-boot? #t))) | |
106 | ||
107 | (define %tty-gid | |
108 | ;; ID of the 'tty' group. Allocate it statically to make it easy to refer | |
109 | ;; to it from here and from the 'tty' group definitions. | |
c8fa3426 | 110 | 996) |
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111 | |
112 | (define %pseudo-terminal-file-system | |
113 | ;; The pseudo-terminal file system. It needs to be mounted so that | |
114 | ;; statfs(2) returns DEVPTS_SUPER_MAGIC like libc's getpt(3) expects (and | |
115 | ;; thus openpty(3) and its users, such as xterm.) | |
116 | (file-system | |
117 | (device "none") | |
118 | (mount-point "/dev/pts") | |
119 | (type "devpts") | |
120 | (check? #f) | |
121 | (needed-for-boot? #f) | |
122 | (create-mount-point? #t) | |
123 | (options (string-append "gid=" (number->string %tty-gid) ",mode=620")))) | |
a69576ea | 124 | |
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125 | (define %shared-memory-file-system |
126 | ;; Shared memory. | |
127 | (file-system | |
128 | (device "tmpfs") | |
129 | (mount-point "/dev/shm") | |
130 | (type "tmpfs") | |
131 | (check? #f) | |
132 | (flags '(no-suid no-dev)) | |
133 | (options "size=50%") ;TODO: make size configurable | |
134 | (create-mount-point? #t))) | |
135 | ||
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136 | (define %base-file-systems |
137 | ;; List of basic file systems to be mounted. Note that /proc and /sys are | |
138 | ;; currently mounted by the initrd. | |
7f239fd3 | 139 | (list %devtmpfs-file-system |
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140 | %pseudo-terminal-file-system |
141 | %shared-memory-file-system)) | |
a69576ea | 142 | |
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143 | |
144 | \f | |
145 | ;;; | |
146 | ;;; Mapped devices, for Linux's device-mapper. | |
147 | ;;; | |
148 | ||
149 | (define-record-type* <mapped-device> mapped-device | |
150 | make-mapped-device | |
151 | mapped-device? | |
152 | (source mapped-device-source) ;string | |
153 | (target mapped-device-target) ;string | |
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154 | (type mapped-device-type)) ;<mapped-device-kind> |
155 | ||
156 | (define-record-type* <mapped-device-type> mapped-device-kind | |
157 | make-mapped-device-kind | |
158 | mapped-device-kind? | |
159 | (open mapped-device-kind-open) ;source target -> gexp | |
160 | (close mapped-device-kind-close ;source target -> gexp | |
161 | (default (const #~(const #f))))) | |
5dae0186 | 162 | |
c5df1839 | 163 | ;;; file-systems.scm ends here |