diff options
Diffstat (limited to 'gnu/installer')
| -rw-r--r-- | gnu/installer/utils.scm | 164 |
1 files changed, 120 insertions, 44 deletions
diff --git a/gnu/installer/utils.scm b/gnu/installer/utils.scm index 5f8fe8ca01..d73698df15 100644 --- a/gnu/installer/utils.scm +++ b/gnu/installer/utils.scm @@ -22,8 +22,13 @@ #:use-module (guix build utils) #:use-module (guix i18n) #:use-module (srfi srfi-1) + #:use-module (srfi srfi-11) + #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) + #:use-module (srfi srfi-34) + #:use-module (srfi srfi-35) #:use-module (ice-9 match) + #:use-module (ice-9 popen) #:use-module (ice-9 rdelim) #:use-module (ice-9 regex) #:use-module (ice-9 format) @@ -68,50 +73,6 @@ number. If no percentage is found, return #f" (and result (string->number (match:substring result 1))))) -(define* (run-command command #:key locale) - "Run COMMAND, a list of strings, in the given LOCALE. Return true if -COMMAND exited successfully, #f otherwise." - (define env (environ)) - - (define (pause) - (format #t (G_ "Press Enter to continue.~%")) - (send-to-clients '(pause)) - (environ env) ;restore environment variables - (match (select (cons (current-input-port) (current-clients)) - '() '()) - (((port _ ...) _ _) - (read-line port)))) - - (setenv "PATH" "/run/current-system/profile/bin") - - (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? - (setenv "LC_ALL" locale) - (setenv "LANGUAGE" - (string-take locale - (or (string-index locale #\_) - (string-length locale))))))) - - (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) - (apply invoke command) - (syslog "command ~s succeeded~%" command) - (newline) - (pause) - #t)) - ;;; ;;; Logging. @@ -219,3 +180,118 @@ accepting socket." (current-clients (reverse remainder)) exp) + + +;;; +;;; Run commands. +;;; + +;; XXX: This is taken from (guix build utils) and could be factorized. +(define (open-pipe-with-stderr program . args) + "Run PROGRAM with ARGS in an input pipe, but, unlike 'open-pipe*', redirect +both its standard output and standard error to the pipe. Return two value: +the pipe to read PROGRAM's data from, and the PID of the child process running +PROGRAM." + ;; 'open-pipe*' doesn't attempt to capture stderr in any way, which is why + ;; we need to roll our own. + (match (pipe) + ((input . output) + (match (primitive-fork) + (0 + (dynamic-wind + (const #t) + (lambda () + (close-port input) + (close-port (syslog-port)) + (dup2 (fileno output) 1) + (dup2 (fileno output) 2) + (apply execlp program program args)) + (lambda () + (primitive-exit 127)))) + (pid + (close-port output) + (values input pid)))))) + +(define invoke-log-port + ;; Port used by INVOKE-WITH-LOG for logging. + (make-parameter #f)) + +(define* (invoke-with-log program . args) + "Invoke PROGRAM with ARGS and log PROGRAM's standard output and standard +error to INVOKE-LOG-PORT. If PROGRAM succeeds, print nothing and return the +unspecified value; otherwise, raise a '&message' error condition with the +status code. This procedure is very similar to INVOKE/QUIET with the +noticeable difference that the program output, that can be quite heavy, is not +stored but directly sent to INVOKE-LOG-PORT if defined." + (let-values (((pipe pid) + (apply open-pipe-with-stderr program args))) + (let loop () + (match (read-line pipe) + ((? eof-object?) + (close-port pipe) + (match (waitpid pid) + ((_ . status) + (unless (zero? status) + (raise + (condition (&invoke-error + (program program) + (arguments args) + (exit-status (status:exit-val status)) + (term-signal (status:term-sig status)) + (stop-signal (status:stop-sig status))))))))) + (line + (and=> (invoke-log-port) (cut format <> "~a~%" line)) + (loop)))))) + +(define* (run-command command #:key locale) + "Run COMMAND, a list of strings, in the given LOCALE. Return true if +COMMAND exited successfully, #f otherwise." + (define env (environ)) + + (define (pause) + (format #t (G_ "Press Enter to continue.~%")) + (send-to-clients '(pause)) + (environ env) ;restore environment variables + (match (select (cons (current-input-port) (current-clients)) + '() '()) + (((port _ ...) _ _) + (read-line port)))) + + (setenv "PATH" "/run/current-system/profile/bin") + + (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? + (setenv "LC_ALL" locale) + (setenv "LANGUAGE" + (string-take locale + (or (string-index locale #\_) + (string-length locale))))))) + + (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) + ;; If there are any connected clients, assume that we are running + ;; installation tests. In that case, dump the standard and error outputs + ;; to syslog. + (let ((testing? (not (null? (current-clients))))) + (if testing? + (parameterize ((invoke-log-port (syslog-port))) + (apply invoke-with-log command)) + (apply invoke command))) + (syslog "command ~s succeeded~%" command) + (newline) + (pause) + #t)) + +;;; utils.scm ends here |