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-rw-r--r--gnu/services/base.scm256
1 files changed, 151 insertions, 105 deletions
diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index 8e30bcd341..1ad7c2320a 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -817,7 +817,7 @@ the message of the day, among other things."
agetty-configuration?
(agetty agetty-configuration-agetty ;<package>
(default util-linux))
- (tty agetty-configuration-tty) ;string
+ (tty agetty-configuration-tty) ;string | #f
(term agetty-term ;string | #f
(default #f))
(baud-rate agetty-baud-rate ;string | #f
@@ -890,6 +890,40 @@ the message of the day, among other things."
;;; (default #f))
)
+(define (default-serial-port)
+ "Return a gexp that determines a reasonable default serial port
+to use as the tty. This is primarily useful for headless systems."
+ #~(begin
+ ;; console=device,options
+ ;; device: can be tty0, ttyS0, lp0, ttyUSB0 (serial).
+ ;; options: BBBBPNF. P n|o|e, N number of bits,
+ ;; F flow control (r RTS)
+ (let* ((not-comma (char-set-complement (char-set #\,)))
+ (command (linux-command-line))
+ (agetty-specs (find-long-options "agetty.tty" command))
+ (console-specs (filter (lambda (spec)
+ (and (string-prefix? "tty" spec)
+ (not (or
+ (string-prefix? "tty0" spec)
+ (string-prefix? "tty1" spec)
+ (string-prefix? "tty2" spec)
+ (string-prefix? "tty3" spec)
+ (string-prefix? "tty4" spec)
+ (string-prefix? "tty5" spec)
+ (string-prefix? "tty6" spec)
+ (string-prefix? "tty7" spec)
+ (string-prefix? "tty8" spec)
+ (string-prefix? "tty9" spec)))))
+ (find-long-options "console" command)))
+ (specs (append agetty-specs console-specs)))
+ (match specs
+ (() #f)
+ ((spec _ ...)
+ ;; Extract device name from first spec.
+ (match (string-tokenize spec not-comma)
+ ((device-name _ ...)
+ device-name)))))))
+
(define agetty-shepherd-service
(match-lambda
(($ <agetty-configuration> agetty tty term baud-rate auto-login
@@ -900,8 +934,9 @@ the message of the day, among other things."
erase-characters kill-characters chdir delay nice extra-options)
(list
(shepherd-service
+ (modules '((ice-9 match) (gnu build linux-boot)))
(documentation "Run agetty on a tty.")
- (provision (list (symbol-append 'term- (string->symbol tty))))
+ (provision (list (symbol-append 'term- (string->symbol (or tty "auto")))))
;; Since the login prompt shows the host name, wait for the 'host-name'
;; service to be done. Also wait for udev essentially so that the tty
@@ -909,113 +944,119 @@ the message of the day, among other things."
;; mingetty-shepherd-service).
(requirement '(user-processes host-name udev))
- (start #~(make-forkexec-constructor
- (list #$(file-append util-linux "/sbin/agetty")
- #$@extra-options
- #$@(if eight-bits?
- #~("--8bits")
- #~())
- #$@(if no-reset?
- #~("--noreset")
- #~())
- #$@(if remote?
- #~("--remote")
- #~())
- #$@(if flow-control?
- #~("--flow-control")
- #~())
- #$@(if host
- #~("--host" #$host)
- #~())
- #$@(if no-issue?
- #~("--noissue")
- #~())
- #$@(if init-string
- #~("--init-string" #$init-string)
- #~())
- #$@(if no-clear?
- #~("--noclear")
- #~())
+ (start #~(let ((tty #$(default-serial-port)))
+ (if tty
+ (make-forkexec-constructor
+ (list #$(file-append util-linux "/sbin/agetty")
+ #$@extra-options
+ #$@(if eight-bits?
+ #~("--8bits")
+ #~())
+ #$@(if no-reset?
+ #~("--noreset")
+ #~())
+ #$@(if remote?
+ #~("--remote")
+ #~())
+ #$@(if flow-control?
+ #~("--flow-control")
+ #~())
+ #$@(if host
+ #~("--host" #$host)
+ #~())
+ #$@(if no-issue?
+ #~("--noissue")
+ #~())
+ #$@(if init-string
+ #~("--init-string" #$init-string)
+ #~())
+ #$@(if no-clear?
+ #~("--noclear")
+ #~())
;;; FIXME This doesn't work as expected. According to agetty(8), if this option
;;; is not passed, then the default is 'auto'. However, in my tests, when that
;;; option is selected, agetty never presents the login prompt, and the
;;; term-ttyS0 service respawns every few seconds.
- #$@(if local-line
- #~(#$(match local-line
- ('auto "--local-line=auto")
- ('always "--local-line=always")
- ('never "-local-line=never")))
- #~())
- #$@(if extract-baud?
- #~("--extract-baud")
- #~())
- #$@(if skip-login?
- #~("--skip-login")
- #~())
- #$@(if no-newline?
- #~("--nonewline")
- #~())
- #$@(if login-options
- #~("--login-options" #$login-options)
- #~())
- #$@(if chroot
- #~("--chroot" #$chroot)
- #~())
- #$@(if hangup?
- #~("--hangup")
- #~())
- #$@(if keep-baud?
- #~("--keep-baud")
- #~())
- #$@(if timeout
- #~("--timeout" #$(number->string timeout))
- #~())
- #$@(if detect-case?
- #~("--detect-case")
- #~())
- #$@(if wait-cr?
- #~("--wait-cr")
- #~())
- #$@(if no-hints?
- #~("--nohints?")
- #~())
- #$@(if no-hostname?
- #~("--nohostname")
- #~())
- #$@(if long-hostname?
- #~("--long-hostname")
- #~())
- #$@(if erase-characters
- #~("--erase-chars" #$erase-characters)
- #~())
- #$@(if kill-characters
- #~("--kill-chars" #$kill-characters)
- #~())
- #$@(if chdir
- #~("--chdir" #$chdir)
- #~())
- #$@(if delay
- #~("--delay" #$(number->string delay))
- #~())
- #$@(if nice
- #~("--nice" #$(number->string nice))
- #~())
- #$@(if auto-login
- (list "--autologin" auto-login)
- '())
- #$@(if login-program
- #~("--login-program" #$login-program)
- #~())
- #$@(if login-pause?
- #~("--login-pause")
- #~())
- #$tty
- #$@(if baud-rate
- #~(#$baud-rate)
- #~())
- #$@(if term
- #~(#$term)
- #~()))))
+ #$@(if local-line
+ #~(#$(match local-line
+ ('auto "--local-line=auto")
+ ('always "--local-line=always")
+ ('never "-local-line=never")))
+ #~())
+ #$@(if tty
+ #~()
+ #~("--keep-baud"))
+ #$@(if extract-baud?
+ #~("--extract-baud")
+ #~())
+ #$@(if skip-login?
+ #~("--skip-login")
+ #~())
+ #$@(if no-newline?
+ #~("--nonewline")
+ #~())
+ #$@(if login-options
+ #~("--login-options" #$login-options)
+ #~())
+ #$@(if chroot
+ #~("--chroot" #$chroot)
+ #~())
+ #$@(if hangup?
+ #~("--hangup")
+ #~())
+ #$@(if keep-baud?
+ #~("--keep-baud")
+ #~())
+ #$@(if timeout
+ #~("--timeout" #$(number->string timeout))
+ #~())
+ #$@(if detect-case?
+ #~("--detect-case")
+ #~())
+ #$@(if wait-cr?
+ #~("--wait-cr")
+ #~())
+ #$@(if no-hints?
+ #~("--nohints?")
+ #~())
+ #$@(if no-hostname?
+ #~("--nohostname")
+ #~())
+ #$@(if long-hostname?
+ #~("--long-hostname")
+ #~())
+ #$@(if erase-characters
+ #~("--erase-chars" #$erase-characters)
+ #~())
+ #$@(if kill-characters
+ #~("--kill-chars" #$kill-characters)
+ #~())
+ #$@(if chdir
+ #~("--chdir" #$chdir)
+ #~())
+ #$@(if delay
+ #~("--delay" #$(number->string delay))
+ #~())
+ #$@(if nice
+ #~("--nice" #$(number->string nice))
+ #~())
+ #$@(if auto-login
+ (list "--autologin" auto-login)
+ '())
+ #$@(if login-program
+ #~("--login-program" #$login-program)
+ #~())
+ #$@(if login-pause?
+ #~("--login-pause")
+ #~())
+ #$(or tty (default-serial-port))
+ #$@(if baud-rate
+ #~(#$baud-rate)
+ #~())
+ #$@(if term
+ #~(#$term)
+ #~()))))
+ (const #f))) ; never start.
(stop #~(make-kill-destructor)))))))
(define agetty-service-type
@@ -2012,6 +2053,11 @@ This service is not part of @var{%base-services}."
(cons tty %default-console-font))
'("tty1" "tty2" "tty3" "tty4" "tty5" "tty6")))
+ (agetty-service (agetty-configuration
+ (extra-options '("-L")) ; no carrier detect
+ (term "vt100")
+ (tty #f))) ; automatic
+
(mingetty-service (mingetty-configuration
(tty "tty1")))
(mingetty-service (mingetty-configuration
generated by cgit v1.2.3 (git 2.45.0) at 2024-11-23 20:45:18 +0000