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| author | Ludovic Courtès <ludo@gnu.org> | 2022-04-08 11:53:02 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2022-04-08 18:14:35 +0200 |
| commit | 931f13840bad7bd3cb98b7806f09ca2b3cf7cd10 (patch) | |
| tree | 9724772c119ceb742e34efee26ebdefdd77cfa69 /gnu/build/file-systems.scm | |
| parent | df473496edefbb88eaf2fbff7dda2665eb21b4d1 (diff) | |
| download | guix-931f13840bad7bd3cb98b7806f09ca2b3cf7cd10.tar guix-931f13840bad7bd3cb98b7806f09ca2b3cf7cd10.tar.gz | |
mapped-devices: Ensure 'cryptsetup open' gets a tty.
Fixes <https://issues.guix.gnu.org/54770>.
Regression introduced in 400c9ed3d779308e56038305d40cd93acb496180.
Previously, for an encrypted /home (say), "cryptsetup open" would be
invoked by shepherd, with /dev/null as its standard input. It would
thus run in non-interactive mode and, instead of asking for a
passphrase, fail with:
Nothing to read on input.
This change ensures it runs in interactive mode.
* gnu/build/file-systems.scm (system*/console, system*/tty): New
procedures.
* gnu/system/mapped-devices.scm (open-luks-device): Use 'system*/tty'
instead of 'system*'.
Diffstat (limited to 'gnu/build/file-systems.scm')
| -rw-r--r-- | gnu/build/file-systems.scm | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/gnu/build/file-systems.scm b/gnu/build/file-systems.scm index d95340df83..d5f38c6774 100644 --- a/gnu/build/file-systems.scm +++ b/gnu/build/file-systems.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2020, 2021 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2014-2018, 2020-2022 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2016, 2017 David Craven <david@craven.ch> ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com> ;;; Copyright © 2019 Guillaume Le Vaillant <glv@posteo.net> @@ -54,6 +54,7 @@ bind-mount + system*/tty mount-flags->bit-mask check-file-system mount-file-system @@ -67,6 +68,33 @@ ;;; ;;; Code: +(define (system*/console program . args) + "Run PROGRAM with ARGS in a tty on top of /dev/console. The return value is +as for 'system*'." + (match (primitive-fork) + (0 + (dynamic-wind + (const #t) + (lambda () + (login-tty (open-fdes "/dev/console" O_RDWR)) + (apply execlp program program args)) + (lambda () + (primitive-_exit 127)))) + (pid + (cdr (waitpid pid))))) + +(define (system*/tty program . args) + "Run PROGRAM with ARGS, creating a tty if its standard input isn't one. +The return value is as for 'system*'. + +This is necessary for commands such as 'cryptsetup open' or 'fsck' that may +need to interact with the user but might be invoked from shepherd, where +standard input is /dev/null." + (apply (if (isatty? (current-input-port)) + system* + system*/console) + program args)) + (define (bind-mount source target) "Bind-mount SOURCE at TARGET." (mount source target "" MS_BIND)) |