Just another Reddit refugee

  • 10 Posts
  • 459 Comments
Joined 2 years ago
Cake day: June 11th, 2023
  • xavier666@lemm.eeOPtoLinux@lemmy.ml•Weird root permission issue on Sway which is not present in i3English
    1·
    1 month ago
    $ which sway
/usr/bin/sway

$ sway --version
sway version 1.9

$ file $(which sway)
/usr/bin/sway: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=70fe358f7e410f618ad8a9ce0e573ed6826b2e75, for GNU/Linux 3.2.0, stripped

$ ls -l $(which sway)
-rwxr-xr-x 1 root root 600352 Apr  1  2024 /usr/bin/sway

    id pre and post login

    uid=1000(xavier666) gid=1000(xavier666) groups=1000(xavier666),0(root)
---------------
uid=1000(xavier666) gid=1000(xavier666) groups=1000(xavier666),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),120(lpadmin),132(lxd),133(sambashare)

    A funny thing; I think this has nothing to do with gdm. I have gdm disabled now and launching sway directly from the terminal and the issue still persists.

    The problem goes away (xavier666 becomes part of sudo like expected) when I type exec su - xavier666 for that terminal session only. If I open a new terminal, it problem reappears. I’ll just in case check if zsh/omyzsh is doing something funny.

  • xavier666@lemm.eeOPtoLinux@lemmy.ml•Weird root permission issue on Sway which is not present in i3English
    1·
    1 month ago

    I found something interesting, thanks to my friend

    • I removed the fix mentioned above. Now user does not have sudo access inside sway
    • I ran the command exec su - xavier666. It asked for my user password and the command was accepted.
    • My groups output looks normal (xavier666 is now part of sudo) and my permissions are fine
    • However, the problem reappears after a reboot

    It is as if this user is an imposter with incorrect privileges 📮

  • xavier666@lemm.eeOPtoLinux@lemmy.ml•Weird root permission issue on Sway which is not present in i3English
    21·
    1 month ago

    For i3, the desktop file is like this (present in /usr/share/xsessions)

    [Desktop Entry]
Name=i3
Comment=improved dynamic tiling window manager
Exec=i3
TryExec=i3
Type=Application
X-LightDM-DesktopName=i3
DesktopNames=i3
Keywords=tiling;wm;windowmanager;window;manager;

    And sway (present in /usr/share/wayland-sessions)

    [Desktop Entry]
Version=1.0
Name=Sway
Comment=An i3-compatible Wayland compositor
Exec=/usr/bin/sway
Type=Application
DesktopNames=sway

    Gdm probably sums up all the DE from both the wayland and x11 sessions.

    There are some files & directories in /etc/gdm3 but I’m too lazy to go through all of them

    Init       PostSession  Prime     config-error-dialog.sh  greeter.dconf-defaults
PostLogin  PreSession   PrimeOff  custom.conf             Xsession

    Thanks for your help.

  • xavier666@lemm.eeOPtoLinux@lemmy.ml•Weird root permission issue on Sway which is not present in i3English
    2·
    1 month ago

    As what user are you executing all these ‘groups’ commands?

    I’m using my default user (xavier666)

    The “normal” user should not be in the root group, and root should not be in the normal user’s group.

    I just made the user a root user/system administrator during the Ubuntu installation process, which is very standard.

    Have you done other things beside the “fix” you mentioned?

    AFAIK, I haven’t done any changes. This is a single user system. I checked the contents of /etc/sudoers and these are the only other lines of significance. I didn’t change them (Why are there % signs?)

    # User privilege specification
root    ALL=(ALL:ALL) ALL
xavier666    ALL=(ALL:ALL) ALL

# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL

    That “fix” from your op, btw, looks totally valid to me.

    It’s working fine also. However, I believe in “don’t touch what ain’t broke” and “why isn’t it documented?”

    However, in my installations I have never touched the sudoer file to make the ONLY user part of sudo group post install. Either I’m dumb or I’m launching sway/wayland with improper permissions.

    I also can’t find anything on the arch wiki which deals with this.

    Why isn’t the same problem happening on i3?

  • xavier666@lemm.eeOPtoLinux@lemmy.ml•Weird root permission issue on Sway which is not present in i3English
    1·
    1 month ago

    these are all text files

    Yeah, it just calls the executable mentioned in the .desktop file (/usr/bin/sway). It should not be a GDM, issue, right?

    I also checked that I don’t have seatd installed, which is a “minimal user, seat and session management daemon” mentioned in arch wiki (https://wiki.archlinux.org/title/Sway). Could it be related?

    Sorry, I have to go now. More tonight, if you want.

    No hurry, the fix I am using is not causing issue. I just want to know why this is happening. This is a fun research problem.

    PS: I checked Google and I didn’t find anyone who has faced the same issue.