c8fa34265d
Suggested by Mark H. Weaver. * gnu/system/shadow.scm (<user-group>)[system?]: New field. (%base-groups): Introduce 'system-group' macro, and use it. * gnu/system.scm (user-group->gexp): Pass the 'system?' field. * guix/build/activation.scm (add-group): Add #:system? and honor it. (activate-users+groups): Handle the 'system?' field. * gnu/system/file-systems.scm (%tty-gid): Choose an ID below 1000. * doc/guix.texi (User Accounts): Document the 'system?' field.
132 lines
4.3 KiB
Scheme
132 lines
4.3 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu system file-systems)
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#:use-module (guix records)
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#:export (<file-system>
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file-system
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file-system?
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file-system-device
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file-system-title
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file-system-mount-point
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file-system-type
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file-system-needed-for-boot?
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file-system-flags
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file-system-options
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file-system-check?
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file-system-create-mount-point?
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%fuse-control-file-system
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%binary-format-file-system
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%shared-memory-file-system
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%pseudo-terminal-file-system
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%devtmpfs-file-system
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%base-file-systems))
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;;; Commentary:
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;;;
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;;; Declaring file systems to be mounted.
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;;;
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;;; Code:
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;; File system declaration.
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(define-record-type* <file-system> file-system
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make-file-system
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file-system?
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(device file-system-device) ; string
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(title file-system-title ; 'device | 'label | 'uuid
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(default 'device))
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(mount-point file-system-mount-point) ; string
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(type file-system-type) ; string
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(flags file-system-flags ; list of symbols
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(default '()))
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(options file-system-options ; string or #f
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(default #f))
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(needed-for-boot? file-system-needed-for-boot? ; Boolean
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(default #f))
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(check? file-system-check? ; Boolean
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(default #t))
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(create-mount-point? file-system-create-mount-point? ; Boolean
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(default #f)))
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(define %fuse-control-file-system
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;; Control file system for Linux' file systems in user-space (FUSE).
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(file-system
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(device "fusectl")
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(mount-point "/sys/fs/fuse/connections")
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(type "fusectl")
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(check? #f)))
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(define %binary-format-file-system
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;; Support for arbitrary executable binary format.
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(file-system
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(device "binfmt_misc")
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(mount-point "/proc/sys/fs/binfmt_misc")
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(type "binfmt_misc")
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(check? #f)))
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(define %devtmpfs-file-system
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;; /dev as a 'devtmpfs' file system, needed for udev.
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(file-system
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(device "none")
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(mount-point "/dev")
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(type "devtmpfs")
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(check? #f)
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;; Mount it from the initrd so /dev/pts & co. can then be mounted over it.
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(needed-for-boot? #t)))
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(define %tty-gid
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;; ID of the 'tty' group. Allocate it statically to make it easy to refer
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;; to it from here and from the 'tty' group definitions.
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996)
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(define %pseudo-terminal-file-system
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;; The pseudo-terminal file system. It needs to be mounted so that
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;; statfs(2) returns DEVPTS_SUPER_MAGIC like libc's getpt(3) expects (and
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;; thus openpty(3) and its users, such as xterm.)
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(file-system
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(device "none")
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(mount-point "/dev/pts")
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(type "devpts")
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(check? #f)
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(needed-for-boot? #f)
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(create-mount-point? #t)
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(options (string-append "gid=" (number->string %tty-gid) ",mode=620"))))
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(define %shared-memory-file-system
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;; Shared memory.
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(file-system
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(device "tmpfs")
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(mount-point "/dev/shm")
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(type "tmpfs")
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(check? #f)
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(flags '(no-suid no-dev))
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(options "size=50%") ;TODO: make size configurable
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(create-mount-point? #t)))
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(define %base-file-systems
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;; List of basic file systems to be mounted. Note that /proc and /sys are
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;; currently mounted by the initrd.
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(list %devtmpfs-file-system
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%pseudo-terminal-file-system
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%shared-memory-file-system))
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;;; file-systems.scm ends here
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