mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-27 14:52:05 -05:00
5c04b00cf4
* gnu/installer.scm (installer-program): Log crashes with 'syslog'. * gnu/installer/parted.scm (luks-format-and-open, luks-close) (mount-user-partitions, umount-user-partitions): Add 'syslog' calls. * gnu/installer/steps.scm (run-installer-steps): Log the running step with 'syslog'. * gnu/installer/utils.scm (run-shell-command): Add calls to 'syslog'.
136 lines
4.5 KiB
Scheme
136 lines
4.5 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2018 Mathieu Othacehe <m.othacehe@gmail.com>
|
||
;;; Copyright © 2019, 2020 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 installer utils)
|
||
#:use-module (guix utils)
|
||
#:use-module (guix build utils)
|
||
#:use-module (guix i18n)
|
||
#:use-module (srfi srfi-34)
|
||
#:use-module (ice-9 rdelim)
|
||
#:use-module (ice-9 regex)
|
||
#:use-module (ice-9 format)
|
||
#:use-module (ice-9 textual-ports)
|
||
#:export (read-lines
|
||
read-all
|
||
nearest-exact-integer
|
||
read-percentage
|
||
run-shell-command
|
||
|
||
syslog-port
|
||
syslog))
|
||
|
||
(define* (read-lines #:optional (port (current-input-port)))
|
||
"Read lines from PORT and return them as a list."
|
||
(let loop ((line (read-line port))
|
||
(lines '()))
|
||
(if (eof-object? line)
|
||
(reverse lines)
|
||
(loop (read-line port)
|
||
(cons line lines)))))
|
||
|
||
(define (read-all file)
|
||
"Return the content of the given FILE as a string."
|
||
(call-with-input-file file
|
||
get-string-all))
|
||
|
||
(define (nearest-exact-integer x)
|
||
"Given a real number X, return the nearest exact integer, with ties going to
|
||
the nearest exact even integer."
|
||
(inexact->exact (round x)))
|
||
|
||
(define (read-percentage percentage)
|
||
"Read PERCENTAGE string and return the corresponding percentage as a
|
||
number. If no percentage is found, return #f"
|
||
(let ((result (string-match "^([0-9]+)%$" percentage)))
|
||
(and result
|
||
(string->number (match:substring result 1)))))
|
||
|
||
(define* (run-shell-command command #:key locale)
|
||
"Run COMMAND, a string, with Bash, and in the given LOCALE. Return true if
|
||
COMMAND exited successfully, #f otherwise."
|
||
(define (pause)
|
||
(format #t (G_ "Press Enter to continue.~%"))
|
||
(read-line (current-input-port)))
|
||
|
||
(call-with-temporary-output-file
|
||
(lambda (file port)
|
||
(when locale
|
||
(let ((supported? (false-if-exception
|
||
(setlocale LC_ALL locale))))
|
||
;; If LOCALE is not supported, then set LANGUAGE, which might at
|
||
;; least give us translated messages.
|
||
(if supported?
|
||
(format port "export LC_ALL=\"~a\"~%" locale)
|
||
(format port "export LANGUAGE=\"~a\"~%"
|
||
(string-take locale
|
||
(string-index locale #\_))))))
|
||
|
||
(format port "exec ~a~%" command)
|
||
(close port)
|
||
|
||
(guard (c ((invoke-error? c)
|
||
(newline)
|
||
(format (current-error-port)
|
||
(G_ "Command failed with exit code ~a.~%")
|
||
(invoke-error-exit-status c))
|
||
(syslog "command ~s failed with exit code ~a"
|
||
command (invoke-error-exit-status c))
|
||
(pause)
|
||
#f))
|
||
(syslog "running command ~s~%" command)
|
||
(invoke "bash" "--init-file" file)
|
||
(syslog "command ~s succeeded~%" command)
|
||
(newline)
|
||
(pause)
|
||
#t))))
|
||
|
||
|
||
;;;
|
||
;;; Logging.
|
||
;;;
|
||
|
||
(define (open-syslog-port)
|
||
"Return an open port (a socket) to /dev/log or #f if that wasn't possible."
|
||
(let ((sock (socket AF_UNIX SOCK_DGRAM 0)))
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(connect sock AF_UNIX "/dev/log")
|
||
(setvbuf sock 'line)
|
||
sock)
|
||
(lambda args
|
||
(close-port sock)
|
||
#f))))
|
||
|
||
(define syslog-port
|
||
(let ((port #f))
|
||
(lambda ()
|
||
"Return an output port to syslog."
|
||
(unless port
|
||
(set! port (open-syslog-port)))
|
||
(or port (%make-void-port "w")))))
|
||
|
||
(define-syntax syslog
|
||
(lambda (s)
|
||
"Like 'format', but write to syslog."
|
||
(syntax-case s ()
|
||
((_ fmt args ...)
|
||
(string? (syntax->datum #'fmt))
|
||
(with-syntax ((fmt (string-append "installer[~d]: "
|
||
(syntax->datum #'fmt))))
|
||
#'(format (syslog-port) fmt (getpid) args ...))))))
|