diff options
Diffstat (limited to 'gnu/installer/utils.scm')
| -rw-r--r-- | gnu/installer/utils.scm | 50 |
1 files changed, 41 insertions, 9 deletions
diff --git a/gnu/installer/utils.scm b/gnu/installer/utils.scm index 5fd2e2d425..061493e6a7 100644 --- a/gnu/installer/utils.scm +++ b/gnu/installer/utils.scm @@ -20,6 +20,7 @@ (define-module (gnu installer utils) #:use-module (gnu services herd) #:use-module (guix utils) + #:use-module ((guix build syscalls) #:select (openpty login-tty)) #:use-module (guix build utils) #:use-module (guix i18n) #:use-module (srfi srfi-1) @@ -45,6 +46,7 @@ nearest-exact-integer read-percentage run-external-command-with-handler + run-external-command-with-handler/tty run-external-command-with-line-hooks run-command run-command-in-installer @@ -124,10 +126,37 @@ the child process as returned by waitpid." (close-port input) (close-pipe dummy-pipe))) -(define (run-external-command-with-line-hooks line-hooks command) +(define (run-external-command-with-handler/tty handler command) + "Run command specified by the list COMMAND in a child operating in a +pseudoterminal with output handler HANDLER. HANDLER is a procedure taking an +input port, to which the command will write its standard output and error. +Returns the integer status value of the child process as returned by waitpid." + (define-values (controller inferior) + (openpty)) + + (match (primitive-fork) + (0 + (catch #t + (lambda () + (close-fdes controller) + (login-tty inferior) + (apply execlp (car command) command)) + (lambda _ + (primitive-exit 127)))) + (pid + (close-fdes inferior) + (let* ((port (fdopen controller "r0")) + (result (false-if-exception + (handler port)))) + (close-port port) + (cdr (waitpid pid)))))) + +(define* (run-external-command-with-line-hooks line-hooks command + #:key (tty? #false)) "Run command specified by the list COMMAND in a child, processing each -output line with the procedures in LINE-HOOKS. Returns the integer status -value of the child process as returned by waitpid." +output line with the procedures in LINE-HOOKS. If TTY is set to #true, the +COMMAND will be run in a pseudoterminal. Returns the integer status value of +the child process as returned by waitpid." (define (handler input) (and (and=> (get-line input) @@ -136,14 +165,17 @@ value of the child process as returned by waitpid." #f (begin (for-each (lambda (f) (f line)) (append line-hooks - %default-installer-line-hooks)) + %default-installer-line-hooks)) #t)))) (handler input))) - (run-external-command-with-handler handler command)) + (if tty? + (run-external-command-with-handler/tty handler command) + (run-external-command-with-handler handler command))) -(define* (run-command command) +(define* (run-command command #:key (tty? #f)) "Run COMMAND, a list of strings. Return true if COMMAND exited -successfully, #f otherwise." +successfully, #f otherwise. If TTY is set to #true, the COMMAND will be run +in a pseudoterminal." (define (pause) (format #t (G_ "Press Enter to continue.~%")) (send-to-clients '(pause)) @@ -154,8 +186,8 @@ successfully, #f otherwise." (installer-log-line "running command ~s" command) (define result (run-external-command-with-line-hooks - (list %display-line-hook) - command)) + (list %display-line-hook) command + #:tty? tty?)) (define exit-val (status:exit-val result)) (define term-sig (status:term-sig result)) (define stop-sig (status:stop-sig result)) |