GNU bug report logs - #50748
28.0.50; tramp-sh.el uses mknod file p which is not available on macos

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Damien Merenne <dam <at> cosinux.org>
Subject: bug#50748: closed (Re: bug#50748: Acknowledgement (28.0.50;
 tramp-sh.el uses mknod file p which is not available on macos))
Date: Tue, 28 Sep 2021 14:07:01 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#50748: 28.0.50; tramp-sh.el uses mknod file p which is not available on macos

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 50748 <at> debbugs.gnu.org.

-- 
50748: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=50748
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Damien Merenne <dam <at> cosinux.org>
Cc: 50748-done <at> debbugs.gnu.org
Subject: Re: bug#50748: Acknowledgement (28.0.50; tramp-sh.el uses mknod
 file p which is not available on macos)
Date: Tue, 28 Sep 2021 16:06:03 +0200

Version: 28.1

Damien Merenne <dam <at> cosinux.org> writes:

Hi Damien,

>> $ env REMOTE_TEMPORARY_FILE_DIRECTORY='/ssh:laptop.lan:/tmp' make -C
> test tramp-tests SELECTOR=tramp-test30-make-process
>
> env REMOTE_TEMPORARY_FILE_DIRECTORY='/ssh:laptop.lan:/tmp' make -C
> test tramp-tests SELECTOR=tramp-test30-make-process
> make: Entering directory '/home/dam/.local/Cellar/emacs/test'
> make[1]: Entering directory '/home/dam/.local/Cellar/emacs/test'
>   GEN      lisp/net/tramp-tests.log
> Running 1 tests (2021-09-28 13:59:35+0200, selector
> `tramp-test30-make-process')
> process-connection-type nil
> "66\n6F\n6F\n0A\n0A\n"
> process-connection-type pipe
> "66\n6F\n6F\n0A\n0A\n"
> process-connection-type t
> "66\n6F\n6F\n0A\n0A\n"
> process-connection-type pty
> "66\n6F\n6F\n0A\n0A\n"
> process-connection-type nil
> "66\n6F\n6F\n0A\n0A\n"
> process-connection-type pipe
> "66\n6F\n6F\n0A\n0A\n"
> process-connection-type t
> "66\n6F\n6F\n0A\n0A\n"
> process-connection-type pty
> "66\n6F\n6F\n0A\n0A\n"
>    passed  1/1  tramp-test30-make-process (10.930992 sec)
>
> Ran 1 tests, 1 results as expected, 0 unexpected (2021-09-28
> 13:59:46+0200, 10.931095 sec)

Thanks, this looks like expected. So I have adapted tramp-tests.el, and
pushed it to master. Closing the bug report.

As you know, I have no macOS machine for testing. Perhaps you could run
the whole test suite, and see whether there are problems? The call is

$ env REMOTE_TEMPORARY_FILE_DIRECTORY='/ssh:laptop.lan:/tmp' make -C test tramp-tests

Thanks, and best regards, Michael.

[Message part 3 (message/rfc822, inline)]

From: Damien Merenne <dam <at> cosinux.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 28.0.50; tramp-sh.el uses mknod file p which is not available on macos
Date: Thu, 23 Sep 2021 08:29:53 +0200

I'm trying to use eglot over tramp using `emacs -Q -f package-initialize
-L /path/to/my/eglot -l eglot.el`. From what I understand, to
capture the remote process stderr, tramp creates a fifo, in
`tramp-sh-handle-make-process`, `tramp-sh.el:2889`. The MacOS mknod
command does not support the "p" parameter, so the communication with
the process does not work. Also no error is reported while the mknod
command is failing. I tried replacing `mknod %s p` with `mkfifo %s` or using gnu coreutils mknod. This
fixes the fifo creation but the process communication is still
broken after that.

I can reproduce the problem with

(let ((default-directory "/ssh:macos-laptop:"))
  (make-process
   :name "TEST"
   :buffer "*TEST*"
   :command '("sh" "-c" "while sleep 1; do echo $(hostname) out; echo $(hostname) err >&2; done")
   :connection-type 'pipe
   :coding 'utf-8-emacs-unix
   :noquery t
   :stderr (get-buffer-create "*TEST stderr*")
   :file-handler t))

And it works correctly with

(let ((default-directory "/ssh:localhost:"))
  (make-process
   :name "TEST"
   :buffer "*TEST*"
   :command '("sh" "-c" "while sleep 1; do echo $(hostname) out; echo $(hostname) err >&2; done")
   :connection-type 'pipe
   :coding 'utf-8-emacs-unix
   :noquery t
   :stderr (get-buffer-create "*TEST stderr*")
   :file-handler t))



In GNU Emacs 28.0.50 (build 5, x86_64-pc-linux-gnu, GTK+ Version 3.24.25, cairo version 1.16.0)
 of 2021-09-16 built on workstation.lan
Repository revision: 7f53446a10eaf029f73e637bba3c9c6bf7c33111
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101001
System Description: Ubuntu 21.04

Configured using:
 'configure --with-native-compilation --with-mailutils --with-gnutls
 --with-modules --with-json --without-gpm --with-file-notification=yes
 --with-xwidgets --without-selinux --with-libsystemd --with-jpeg
 --with-tiff --with-gif --with-png --with-rsvg --with-imagemagick
 CC=gcc-10'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ
IMAGEMAGICK JPEG JSON LCMS2 LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP
NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF
TOOLKIT_SCROLL_BARS X11 XDBE XIM XPM XWIDGETS GTK3 ZLIB

Important settings:
  value of $LC_MONETARY: fr_BE.UTF-8
  value of $LC_NUMERIC: fr_BE.UTF-8
  value of $LC_TIME: fr_BE.UTF-8
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: C++//lw

Minor modes in effect:
  cov-mode: t
  bloom-global-minor-mode: t
  bloom-minor-mode: t
  eglot--managed-mode: t
  flymake-mode: t
  flyspell-mode: t
  bug-reference-prog-mode: t
  magit-wip-after-apply-mode: t
  global-git-commit-mode: t
  magit-auto-revert-mode: t
  dtrt-indent-global-mode: t
  dtrt-indent-mode: t
  test-runner-mode: t
  pdf-occur-global-minor-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  subword-mode: t
  smartparens-global-mode: t
  smartparens-mode: t
  show-paren-mode: t
  auto-revert-mode: t
  marginalia-mode: t
  selectrum-mode: t
  corfu-global-mode: t
  corfu-mode: t
  global-ligature-mode: t
  ligature-mode: t
  shell-dirtrack-mode: t
  envrc-global-mode: t
  envrc-mode: t
  bepo-global-mode: t
  which-key-mode: t
  savehist-mode: t
  global-so-long-mode: t
  override-global-mode: t
  straight-use-package-mode: t
  straight-package-neutering-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  auto-fill-function: yas--auto-fill
  transient-mark-mode: t
  abbrev-mode: t

Load-path shadows:
/home/dam/.emacs.d/straight/build/transient/transient hides /usr/local/share/emacs/28.0.50/lisp/transient
/home/dam/.emacs.d/straight/build/jsonrpc/jsonrpc hides /usr/local/share/emacs/28.0.50/lisp/jsonrpc
/home/dam/.emacs.d/straight/build/xref/xref hides /usr/local/share/emacs/28.0.50/lisp/progmodes/xref
/home/dam/.emacs.d/straight/build/flymake/flymake hides /usr/local/share/emacs/28.0.50/lisp/progmodes/flymake
/home/dam/.emacs.d/straight/build/project/project hides /usr/local/share/emacs/28.0.50/lisp/progmodes/project
/home/dam/.emacs.d/straight/build/let-alist/let-alist hides /usr/local/share/emacs/28.0.50/lisp/emacs-lisp/let-alist
/home/dam/.emacs.d/straight/build/eldoc/eldoc hides /usr/local/share/emacs/28.0.50/lisp/emacs-lisp/eldoc

Features:
(shadow sort mail-extr pulse sh-script executable conf-mode rect
mm-archive network-stream url-cache goto-addr emacsbug sendmail helpful
trace edebug info-look help-fns elisp-refs tramp-cmds misearch
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disp-table ehelp vterm-module term/xterm xterm face-remap vc-mtn vc-hg
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racer-autoloads pos-tip-autoloads rust-mode-autoloads rubocop
rubocop-autoloads robe etags fileloop generator inf-ruby robe-autoloads
inf-ruby-autoloads rbenv rbenv-autoloads ruby-mode smie
smartparens-python python tramp-sh smartparens-scala scala-mode
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solarized-theme solarized solarized-faces color
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use-package-bind-key bind-key easy-mmode use-package-core
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lisp-float-type mwheel term/x-win x-win term/common-win x-dnd tool-bar
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text-mode elisp-mode lisp-mode prog-mode register page tab-bar menu-bar
rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock
font-lock syntax font-core term/tty-colors frame minibuffer cl-generic
cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray
cl-preloaded nadvice button loaddefs faces cus-face macroexp files
window text-properties overlay sha1 md5 base64 format env code-pages
mule custom widget hashtable-print-readable backquote threads
xwidget-internal dbusbind inotify lcms2 dynamic-setting
system-font-setting font-render-setting cairo move-toolbar gtk x-toolkit
x multi-tty make-network-process native-compile emacs)

Memory information:
((conses 16 1171416 99492)
 (symbols 48 48827 4)
 (strings 32 188566 42756)
 (string-bytes 1 7819478)
 (vectors 16 95165)
 (vector-slots 8 2534894 561288)
 (floats 8 840 2000)
 (intervals 56 71789 3857)
 (buffers 992 60))

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