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CaptainBlood
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Joined: 24 Jan 2010
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 Posted: Fri Jun 14, 2024 10:05 pm Post subject: emacs GUI/pure-wayland fails from su - {anyone}[workaround] |
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regular user runs emacs(pure-gtk) fine.
However afteremacs GUI throws: | Code: | | Gtk warning Can not open display: |
Seems like context is altered enough for emacs to try to launch under X where no xwayland allowed here.
Quite unfortunate as EDITOR=emacs is involved here to edit /etc/portage files.
EDITOR="emacs -nw" as a workaround...
Any idea how to fix?
Thks 4 ur attention, interest & support
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. "
Last edited by CaptainBlood on Wed Aug 14, 2024 11:33 am; edited 6 times in total |
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3839
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| Posted: Sat Jun 15, 2024 3:10 am Post subject: Re: emacs/pure-wayland fails under root |
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| CaptainBlood wrote: | | Seems like context is altered enough for emacs to try to launch under X where no xwayland allowed here. |
Could be a safety feature too.... 
Thks 4 ur attention, interest & support
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. " |
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3839
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| Posted: Sat Jun 15, 2024 6:17 am Post subject: Re: emacs/pure-wayland fails under root |
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| CaptainBlood wrote: | | Could be a safety feature too.... |
Well, not really:
When launching pure wayland session as root, emacs GUI runs fine.
Problem remains how to run emacs GUI from EDIT, which runs fine in X.
Thks 4 ur attention, interest & support[/code]
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. " |
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sMueggli
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Joined: 03 Sep 2022
Posts: 489
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| Posted: Sat Jun 15, 2024 8:38 am Post subject: |
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| The fix is: Do not run Emacs as user "root". You do not need to run an editor with elevated privileges. You just need elevated privileges to edit some files. You can run Emacs with normal user privileges and gain the elevated privileges with TRAMP (see https://www.gnu.org/software/tramp/#Inline-methods) |
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3839
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| Posted: Sat Jun 15, 2024 12:04 pm Post subject: |
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@sMueggli,
As far as root account is concerned, I agree on GUI forbidden principle.
Title changed as any user account is concerned:
Assuming wayland session running for my_user account,
emacs GUI will run fine except if launched from terminal after running
This doesn't occur in X.
As far as /etc/portage is concerned, here are a few scripts with params to select file(s) to edit.
One file per package paradigm here, many lines within.
If an opened read only buffer by my_user could later gained writable status on demand, that would be fine
The alternative would be to port my scripts to elisp, which is a little far for my skills
Thks 4 ut attention, interest & support.
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. " |
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Hu
Administrator
Joined: 06 Mar 2007
Posts: 22602
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| Posted: Sat Jun 15, 2024 1:57 pm Post subject: |
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| That only works in X11 because a PAM hook propagates the required state. On my systems, I disabled that hook (pam_xauth.so) because I had no need of it and disagreed with some of its hardcoded defaults. Therefore, for me, root shells created by /bin/su - cannot run X11 programs - and I like it that way. Presumably, you need an equivalent pam_waylandauth.so (which may or may not exist, and probably does not have that specific name even if it does exist) to get this working in Wayland. |
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3839
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| Posted: Sat Jun 15, 2024 2:06 pm Post subject: |
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@Hu,
Nice clarifications,
I'm currently investigating TRAMP /su::<absolute file path> instead.
Once working ask expected,, I'd just need to move my /usr/local/sbin scripts to /usr/local/bin.
Thks 4 ur attention, injterest and support.
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. " |
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3839
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| Posted: Wed Aug 14, 2024 10:48 am Post subject: |
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Adding to non root init.el | Code: | (defun edit-current-file-as-root ()
"Edit the file that is associated with the current buffer as root"
(interactive)
(let ((filep (buffer-file-name)))
(if filep (find-file (concat "/sudo::" filep))
(message "Current buffer does not have an associated file.")))) |
from WikEmacs,
then replacing as a preferencebydid the trick here:
It allows to grant write to a read only file buffer.
Reminder: | Code: | ;; No TRAMP saved password file
(connection-local-set-profile-variables 'remote-without-auth-sources '((auth-sources . nil)))
(connection-local-set-profiles '(:application tramp) 'remote-without-auth-sources) |
may be required depending your security standards.
If you did TRAMP prior to this, you may have a file somewhere containing CLEAR text PASSWORD(S).
Can't recall its name. Maybe .tramp located in emacs config directory, e.g. where active init.el lies...
You may want to delete it.
Note: I likely may be missing a smarter way to prevent this.
Thks 4 ur attention, interest & support.
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. " |
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