diff options
Diffstat (limited to 'gnu/services/base.scm')
| -rw-r--r-- | gnu/services/base.scm | 142 |
1 files changed, 96 insertions, 46 deletions
diff --git a/gnu/services/base.scm b/gnu/services/base.scm index 921914ccdf..228d3c5926 100644 --- a/gnu/services/base.scm +++ b/gnu/services/base.scm @@ -6,6 +6,7 @@ ;;; Copyright © 2016, 2017 Leo Famulari <leo@famulari.name> ;;; Copyright © 2016 David Craven <david@craven.ch> ;;; Copyright © 2016 Ricardo Wurmus <rekado@elephly.net> +;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com> ;;; ;;; This file is part of GNU Guix. ;;; @@ -685,17 +686,20 @@ to add @var{device} to the kernel's entropy pool. The service will fail if (shepherd-service-type 'virtual-terminal (lambda (utf8?) - (shepherd-service - (documentation "Set virtual terminals in UTF-8 module.") - (provision '(virtual-terminal)) - (requirement '(root-file-system)) - (start #~(lambda _ - (call-with-output-file - "/sys/module/vt/parameters/default_utf8" - (lambda (port) - (display 1 port))) - #t)) - (stop #~(const #f)))) + (let ((knob "/sys/module/vt/parameters/default_utf8")) + (shepherd-service + (documentation "Set virtual terminals in UTF-8 module.") + (provision '(virtual-terminal)) + (requirement '(root-file-system)) + (start #~(lambda _ + ;; In containers /sys is read-only so don't insist on + ;; writing to this file. + (unless (= 1 (call-with-input-file #$knob read)) + (call-with-output-file #$knob + (lambda (port) + (display 1 port)))) + #t)) + (stop #~(const #f))))) #t)) ;default to UTF-8 (define console-keymap-service-type @@ -1248,18 +1252,57 @@ the tty to run, among other things." (string-concatenate (map cache->config caches))))))) +(define (nscd-action-procedure nscd config option) + ;; XXX: This is duplicated from mcron; factorize. + #~(lambda (_ . args) + ;; Run 'nscd' in a pipe so we can explicitly redirect its output to + ;; 'current-output-port', which at this stage is bound to the client + ;; connection. + (let ((pipe (apply open-pipe* OPEN_READ #$nscd + "-f" #$config #$option args))) + (let loop () + (match (read-line pipe 'concat) + ((? eof-object?) + (catch 'system-error + (lambda () + (zero? (close-pipe pipe))) + (lambda args + ;; There's a race with the SIGCHLD handler, which could + ;; call 'waitpid' before 'close-pipe' above does. If we + ;; get ECHILD, that means we lost the race, but that's + ;; fine. + (or (= ECHILD (system-error-errno args)) + (apply throw args))))) + (line + (display line) + (loop))))))) + +(define (nscd-actions nscd config) + "Return Shepherd actions for NSCD." + ;; Make this functionality available as actions because that's a simple way + ;; to run the right 'nscd' binary with the right config file. + (list (shepherd-action + (name 'statistics) + (documentation "Display statistics about nscd usage.") + (procedure (nscd-action-procedure nscd config "--statistics"))) + (shepherd-action + (name 'invalidate) + (documentation + "Invalidate the given cache--e.g., 'hosts' for host name lookups.") + (procedure (nscd-action-procedure nscd config "--invalidate"))))) + (define (nscd-shepherd-service config) "Return a shepherd service for CONFIG, an <nscd-configuration> object." - (let ((nscd.conf (nscd.conf-file config)) + (let ((nscd (file-append (nscd-configuration-glibc config) + "/sbin/nscd")) + (nscd.conf (nscd.conf-file config)) (name-services (nscd-configuration-name-services config))) (list (shepherd-service (documentation "Run libc's name service cache daemon (nscd).") (provision '(nscd)) (requirement '(user-processes)) (start #~(make-forkexec-constructor - (list #$(file-append (nscd-configuration-glibc config) - "/sbin/nscd") - "-f" #$nscd.conf "--foreground") + (list #$nscd "-f" #$nscd.conf "--foreground") ;; Wait for the PID file. However, the PID file is ;; written before nscd is actually listening on its @@ -1273,7 +1316,12 @@ the tty to run, among other things." (string-append dir "/lib")) (list #$@name-services)) ":"))))) - (stop #~(make-kill-destructor)))))) + (stop #~(make-kill-destructor)) + (modules `((ice-9 popen) ;for the actions + (ice-9 rdelim) + (ice-9 match) + ,@%default-modules)) + (actions (nscd-actions nscd nscd.conf)))))) (define nscd-activation ;; Actions to take before starting nscd. @@ -1846,16 +1894,9 @@ item of @var{packages}." (documentation "Populate the /dev directory, dynamically.") (start #~(lambda () - (define find - (@ (srfi srfi-1) find)) - (define udevd - ;; Choose the right 'udevd'. - (find file-exists? - (map (lambda (suffix) - (string-append #$udev suffix)) - '("/libexec/udev/udevd" ;udev - "/sbin/udevd")))) ;eudev + ;; 'udevd' from eudev. + #$(file-append udev "/sbin/udevd")) (define (wait-for-udevd) ;; Wait until someone's listening on udevd's control @@ -1888,27 +1929,28 @@ item of @var{packages}." (string-append linux-module-directory "/" kernel-release)) (old-umask (umask #o022))) - (make-static-device-nodes directory) + ;; If we're in a container, DIRECTORY might not exist, + ;; for instance because the host runs a different + ;; kernel. In that case, skip it; we'll just miss a few + ;; nodes like /dev/fuse. + (when (file-exists? directory) + (make-static-device-nodes directory)) (umask old-umask)) - (let ((pid (primitive-fork))) - (case pid - ((0) - (exec-command (list udevd))) - (else - ;; Wait until udevd is up and running. This - ;; appears to be needed so that the events - ;; triggered below are actually handled. - (wait-for-udevd) - - ;; Trigger device node creation. - (system* #$(file-append udev "/bin/udevadm") - "trigger" "--action=add") - - ;; Wait for things to settle down. - (system* #$(file-append udev "/bin/udevadm") - "settle") - pid))))) + (let ((pid (fork+exec-command (list udevd)))) + ;; Wait until udevd is up and running. This appears to + ;; be needed so that the events triggered below are + ;; actually handled. + (wait-for-udevd) + + ;; Trigger device node creation. + (system* #$(file-append udev "/bin/udevadm") + "trigger" "--action=add") + + ;; Wait for things to settle down. + (system* #$(file-append udev "/bin/udevadm") + "settle") + pid))) (stop #~(make-kill-destructor)) ;; When halting the system, 'udev' is actually killed by @@ -2043,6 +2085,8 @@ This service is not part of @var{%base-services}." (default (file-append shadow "/bin/login"))) (login-arguments kmscon-configuration-login-arguments (default '("-p"))) + (auto-login kmscon-configuration-auto-login + (default #f)) (hardware-acceleration? kmscon-configuration-hardware-acceleration? (default #f))) ; #t causes failure @@ -2054,14 +2098,20 @@ This service is not part of @var{%base-services}." (virtual-terminal (kmscon-configuration-virtual-terminal config)) (login-program (kmscon-configuration-login-program config)) (login-arguments (kmscon-configuration-login-arguments config)) + (auto-login (kmscon-configuration-auto-login config)) (hardware-acceleration? (kmscon-configuration-hardware-acceleration? config))) (define kmscon-command #~(list #$(file-append kmscon "/bin/kmscon") "--login" "--vt" #$virtual-terminal + "--no-switchvt" ;Prevent a switch to the virtual terminal. #$@(if hardware-acceleration? '("--hwaccel") '()) - "--" #$login-program #$@login-arguments)) + "--login" "--" + #$login-program #$@login-arguments + #$@(if auto-login + #~(#$auto-login) + #~()))) (shepherd-service (documentation "kmscon virtual terminal") @@ -2133,7 +2183,7 @@ This service is not part of @var{%base-services}." AF_INET INADDR_ANY 0))) (set-network-interface-flags sock #$interface 0) (close-port sock) -: #f))) + #f))) (respawn? #f)))))) (define (static-networking-etc-files interfaces) |