;;; 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 system file-systems) #:use-module (guix gexp) #:use-module (guix records) #:export (<file-system> file-system file-system? file-system-device file-system-title file-system-mount-point file-system-type file-system-needed-for-boot? file-system-flags file-system-options file-system-check? file-system-create-mount-point? %fuse-control-file-system %binary-format-file-system %shared-memory-file-system %pseudo-terminal-file-system %devtmpfs-file-system %base-file-systems mapped-device mapped-device? mapped-device-source mapped-device-target mapped-device-type mapped-device-kind mapped-device-kind? mapped-device-kind-open mapped-device-kind-close)) ;;; Commentary: ;;; ;;; Declaring file systems to be mounted. ;;; ;;; Code: ;; File system declaration. (define-record-type* <file-system> file-system make-file-system file-system? (device file-system-device) ; string (title file-system-title ; 'device | 'label | 'uuid (default 'device)) (mount-point file-system-mount-point) ; string (type file-system-type) ; string (flags file-system-flags ; list of symbols (default '())) (options file-system-options ; string or #f (default #f)) (needed-for-boot? file-system-needed-for-boot? ; Boolean (default #f)) (check? file-system-check? ; Boolean (default #t)) (create-mount-point? file-system-create-mount-point? ; Boolean (default #f))) (define %fuse-control-file-system ;; Control file system for Linux' file systems in user-space (FUSE). (file-system (device "fusectl") (mount-point "/sys/fs/fuse/connections") (type "fusectl") (check? #f))) (define %binary-format-file-system ;; Support for arbitrary executable binary format. (file-system (device "binfmt_misc") (mount-point "/proc/sys/fs/binfmt_misc") (type "binfmt_misc") (check? #f))) (define %devtmpfs-file-system ;; /dev as a 'devtmpfs' file system, needed for udev. (file-system (device "none") (mount-point "/dev") (type "devtmpfs") (check? #f) ;; Mount it from the initrd so /dev/pts & co. can then be mounted over it. (needed-for-boot? #t))) (define %tty-gid ;; ID of the 'tty' group. Allocate it statically to make it easy to refer ;; to it from here and from the 'tty' group definitions. 996) (define %pseudo-terminal-file-system ;; The pseudo-terminal file system. It needs to be mounted so that ;; statfs(2) returns DEVPTS_SUPER_MAGIC like libc's getpt(3) expects (and ;; thus openpty(3) and its users, such as xterm.) (file-system (device "none") (mount-point "/dev/pts") (type "devpts") (check? #f) (needed-for-boot? #f) (create-mount-point? #t) (options (string-append "gid=" (number->string %tty-gid) ",mode=620")))) (define %shared-memory-file-system ;; Shared memory. (file-system (device "tmpfs") (mount-point "/dev/shm") (type "tmpfs") (check? #f) (flags '(no-suid no-dev)) (options "size=50%") ;TODO: make size configurable (create-mount-point? #t))) (define %base-file-systems ;; List of basic file systems to be mounted. Note that /proc and /sys are ;; currently mounted by the initrd. (list %devtmpfs-file-system %pseudo-terminal-file-system %shared-memory-file-system)) ;;; ;;; Mapped devices, for Linux's device-mapper. ;;; (define-record-type* <mapped-device> mapped-device make-mapped-device mapped-device? (source mapped-device-source) ;string (target mapped-device-target) ;string (type mapped-device-type)) ;<mapped-device-kind> (define-record-type* <mapped-device-type> mapped-device-kind make-mapped-device-kind mapped-device-kind? (open mapped-device-kind-open) ;source target -> gexp (close mapped-device-kind-close ;source target -> gexp (default (const #~(const #f))))) ;;; file-systems.scm ends here