GNU bug report logs - #76072
29.4; eshell/sudo does not work with aliases and lisp commands with absolute arguments

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Richard Sent <richard <at> freakingpenguin.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.4; eshell/sudo does not work with aliases and lisp commands with
 absolute arguments
Date: Wed, 05 Feb 2025 11:17:25 -0500

Hi all,

I've found that eshell/sudo consistently does not prompt the user for
their sudo password when an absolute path is passed as an argument for a
lisp command, but does for relative paths and external commands.

Additionally, eshell/sudo does not work when command is an alias,
regardless of when lisp or external commands are used.

From emacs -Q and the ~/temp directory:
--8<---------------cut here---------------start------------->8---
# (require 'eshell)
# (add-to-list 'eshell-modules-list 'eshell-tramp)
# M-x eshell
~/temp $ mkdir foo
~/temp $ chmod 700 foo
~/temp $ sudo chown root:root foo

# invokes eshell/ls with "foo", works
~/temp $ sudo ls foo
# user prompted for password as expected
~/temp $ echo $?
0

# invokes eshell/ls with "/home/richard/temp/foo"
~/temp $ sudo ls ~/temp/foo
Opening directory: Permission denied, /home/richard/temp/foo

# invokes external ls
~/temp $ sudo *ls ~/temp/foo
~/temp $ echo $?
0

# using an alias, relative paths no longer work either for both internal
# and external commands
~/temp $ alias ll 'ls -l $*'
~/temp $ sudo ll foo
Opening directory: Permission denied, /home/richard/temp/foo
~/temp $ alias ll '*ls -l $*'
~/temp $ sudo ll foo
/run/current-system/profile/bin/ls: cannot open directory 'foo': Permission denied
--8<---------------cut here---------------end--------------->8---

My guess for the absolute path problem is that passing an absolute path
"exits" the tramp-elevated environment created by
eshell--method-wrap-directory in eshell/sudo.

In GNU Emacs 29.4 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.41,
cairo version 1.18.0)
Windowing system distributor 'The X.Org Foundation', version 11.0.12101014
System Description: Guix System

Configured using:
 'configure
 CONFIG_SHELL=/gnu/store/m0xdsa8cfq6mq1kxgxmpmpg71la4f0b9-bash-minimal-5.1.16/bin/bash
 SHELL=/gnu/store/m0xdsa8cfq6mq1kxgxmpmpg71la4f0b9-bash-minimal-5.1.16/bin/bash
 --prefix=/gnu/store/2vknfplgnim63d8gjbkmiwhvfp0v58hc-emacs-29.4
 --enable-fast-install --with-cairo --with-modules
 --with-native-compilation=aot --disable-build-details'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES
NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3
THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER X11 XDBE XIM XINPUT2 XPM
GTK3 ZLIB

Important settings:
  value of $EMACSLOADPATH: /home/richard/.guix-home/profile/share/emacs/site-lisp:/gnu/store/2vknfplgnim63d8gjbkmiwhvfp0v58hc-emacs-29.4/share/emacs/29.4/lisp
  value of $LANG: en_US.utf8
  locale-coding-system: utf-8-unix

Major mode: ELisp/l

Minor modes in effect:
  eshell-syntax-highlighting-global-mode: t
  rainbow-delimiters-mode: t
  hl-line-mode: t
  all-the-icons-completion-mode: t
  which-key-mode: t
  display-time-mode: t
  global-git-commit-mode: t
  magit-auto-revert-mode: t
  eat-eshell-mode: t
  electric-pair-mode: t
  server-mode: t
  global-auto-revert-mode: t
  delete-selection-mode: t
  display-battery-mode: t
  corfu-popupinfo-mode: t
  global-corfu-mode: t
  corfu-mode: t
  savehist-mode: t
  marginalia-mode: t
  vertico-mode: t
  override-global-mode: t
  shell-dirtrack-mode: t
  puni-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tab-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  buffer-read-only: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
/gnu/store/x3g6222n0swjr0mm4w7p2pdykwgh3iaa-emacs-transient-0.8.2/share/emacs/site-lisp/transient-0.8.2/transient hides /gnu/store/2vknfplgnim63d8gjbkmiwhvfp0v58hc-emacs-29.4/share/emacs/29.4/lisp/transient
/gnu/store/7c6v7wydmmhn0b9irm4jvgajrizwag6m-emacs-soap-client-3.2.3/share/emacs/site-lisp/soap-client-3.2.3/soap-inspect hides /gnu/store/2vknfplgnim63d8gjbkmiwhvfp0v58hc-emacs-29.4/share/emacs/29.4/lisp/net/soap-inspect
/gnu/store/7c6v7wydmmhn0b9irm4jvgajrizwag6m-emacs-soap-client-3.2.3/share/emacs/site-lisp/soap-client-3.2.3/soap-client hides /gnu/store/2vknfplgnim63d8gjbkmiwhvfp0v58hc-emacs-29.4/share/emacs/29.4/lisp/net/soap-client

Features:
(shadow sort emacsbug em-xtra ace-window mail-extr cape sh-script
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geiser-connection tq geiser-syntax scheme geiser-impl help-fns
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jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
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overlay sha1 md5 base64 format env code-pages mule custom widget keymap
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dynamic-setting system-font-setting font-render-setting cairo
move-toolbar gtk x-toolkit xinput2 x multi-tty make-network-process
native-compile emacs)

Memory information:
((conses 16 724523 79928)
 (symbols 48 50875 2)
 (strings 32 197993 5987)
 (string-bytes 1 6854257)
 (vectors 16 105023)
 (vector-slots 8 2080767 70560)
 (floats 8 1286 1132)
 (intervals 56 2909 2150)
 (buffers 984 31))

-- 
Take it easy,
Richard Sent
Making my computer weirder one commit at a time.

Message #8 received at 76072 <at> debbugs.gnu.org (full text, mbox):

From: Jim Porter <jporterbugs <at> gmail.com>
To: Richard Sent <richard <at> freakingpenguin.com>, 76072 <at> debbugs.gnu.org
Subject: Re: bug#76072: 29.4; eshell/sudo does not work with aliases and lisp
 commands with absolute arguments
Date: Wed, 5 Feb 2025 12:10:13 -0800

Thanks for the bug report.

On 2/5/2025 8:17 AM, Richard Sent wrote:
> I've found that eshell/sudo consistently does not prompt the user for
> their sudo password when an absolute path is passed as an argument for a
> lisp command, but does for relative paths and external commands.

The current behavior here is technically correct, if unexpected. 
Absolute filenames in Eshell *always* refer to the local filename (so no 
going through Tramp), just like when you pass the filename to 
'find-file'. Adding an option to adjust this behavior is bug#70792. I 
have a very WIP patch for it that would allow treating absolute 
filenames as local to the current remote connection.

> Additionally, eshell/sudo does not work when command is an alias,
> regardless of when lisp or external commands are used.

This is bug#68074, which was fixed for Emacs 30.

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