Sudo is non functional #4

Lite5h4dow · 2018-03-19T20:29:02Z

I've installed sudo in tumux arch I don't know if this is an issue with sudo or termux-arch but sudo doesn't work, this is a big issue for alot of the dependancies especially for package managers like pacman and yaourt.

SDRausty · 2018-03-21T02:30:37Z

@Lite5h4dow thank you for your interest in this project. What is happening is probably an selinux issue since the entire application runs in userspace.

this is a big issue for alot of the dependancies especially for package managers like pacman and yaourt.

Can su resolve this since su works fine? Are you familiar with these upstream IRC https://wiki.archlinux.org/index.php/IRC_channel links that should be useful for asking this question upstream.

ghost · 2018-04-03T23:33:18Z

Yeah, I have the same problem

$ sudo
sudo: error in /etc/sudo.conf, line 0 while loading plugin "sudoers_policy"
sudo: unable to load /usr/lib/sudo/sudoers.so: /usr/lib/sudo/sudoers.so: cannot stat shared object: Bad file descriptor
sudo: fatal error, unable to load plugins
$ file /usr/lib/sudo/sudoers.so
/usr/lib/sudo/sudoers.so: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, BuildID[sha1]=fdd8877dfa30f38871fd5735638d346a4553b1b7, stripped
$

I think it's due to android/ndk#201

Edit 1: After digging deeper, /etc/sudo.conf is missing...

Edit 2: According to https://www.sudo.ws/man/1.8.14/sudo.conf.man.html, /etc/sudo.conf doesn't have to be present. If it doesn't exist, it will default to:

Plugin sudoers_policy sudoers.so
Plugin sudoers_io sudoers.so

Edit 3: sudo in termux-ubuntu is functional... perhaps the arch distro is broken...

SDRausty · 2018-04-14T22:27:27Z

Here are some links where repeating this topic may be worth the effort and time:

https://github.com/archlinuxarm
https://github.com/ArchStrike/ArchStrike
https://wiki.archlinux.org/index.php/IRC_channel
Email : termux+subscribe@groups.io
Github : https://github.com/termux/
Gitter : https://gitter.im/termux/termux
Termux Community : https://plus.google.com/communities/101692629528551299417

SDRausty · 2018-04-18T23:12:21Z

This topic is touched upon at ArchStrike/ArchStrike#411: closed (relavant comments in closed issues are welcome anytime)

[14:07 home ]$ sudo
sudo: error in /etc/sudo.conf, line 0 while loading plugin "sudoers_policy"
sudo: unable to load /usr/lib/sudo/sudoers.so: /usr/lib/sudo/sudoers.so: cannot stat shared object: Bad file descriptor
sudo: fatal error, unable to load plugins

Where else is sudo upstream? One place has been touched; Where else?

SDRausty · 2018-04-18T23:40:39Z

archlinuxarm just swallowed an issue posted similar to the ArchStrike post. Surprising experience of the #$@& sort:

https://github.com/archlinuxarm

archlinuxarm has open issue board with zero issues
posted at https://github.com/archlinuxarm/archlinuxarm-keyring/issues/1
swallowed into 404
no issue posted at issues board

SDRausty · 2018-04-18T23:41:36Z

https://plus.google.com/109614420080028230010/posts/L1aKsLUhJ2i posted and populated.

SDRausty · 2018-04-19T22:43:49Z

@aiisuika do you have a link?

termux-ubuntu is functional... perhaps the arch distro is broken...

The reason Arch Linux was chosen fall 2017 for further development into this project is that Arch Linux passed the most tests in flying colors. Some things don't work, and will not work because of SE Linux permissions. From what you say, this is not the issue. Do you have any idea what is wrong with sudo in Arch Linux in Termux PRoot? Thank you for your comments; They are helpful.

ghost · 2018-04-20T00:38:19Z

Yup, Neo-Oli's https://github.com/Neo-Oli/termux-ubuntu

In the proot I did the usual apt update && apt upgrade.
Setup locales to stop perl from crying, apt install locales then follow https://askubuntu.com/a/89983
However, remove sudo from the commands in that answer, sudo doesn't work at this point, and you're already root.
Setup a root password.

$ passwd
Type new UNIX password: ***
Retype new UNIX password: ***

Once done, finally install sudo, apt install sudo.
Now setup a non-root user.

$ useradd aiisuika
...
# now login
$ su aiisuika
aiisuika@localhost $ sudo apt install example
# it should ask for the root password
$

And that's it, seems to work for me.

SDRausty · 2018-04-20T01:38:39Z

@aiisuika it is nice that sudo works in Termux PRoot. Functions setlocaleconf () and setlocalegen () setup locale in Arch Linux in Termux PRoot. Changing the password for root has no effect on sudo's behavior. I have looked at the steps that you outlined. Thanks for updating that this works in Termux PRoot.

SDRausty · 2018-04-21T04:11:12Z

@aiisuika you inspired me to install Ubuntu in Termux PRoot again in search of an answer to this topic. Unfortunately, I cannot get past step one:

root@localhost:~# passwd
Enter new UNIX password:
Retype new UNIX password:
passwd: System error
passwd: password unchanged

ghost · 2018-04-25T10:31:43Z

On my rooted phone, it worked flawlessly...
I'll see if theres a non-root workaround.

Ok, there seems to be nothing..
Last option is to create a new type of proot.

SDRausty · 2018-05-10T17:30:11Z

This https://github.com/termux/libandroid-shmem project might give us the shm functionality we are seeking in this issue, and these:

linusboyle · 2018-05-14T10:58:08Z

OMG,I have the same problem as mentioned above,and I try to change the permission of /usr/lib/sudo/sudoers.so but nothing changed.

ghost · 2018-05-14T11:09:13Z

I think proot isn't handling sonething, so selinux is saying no.

ryad-eldajani · 2018-06-09T21:25:00Z

I'd also love to see sudo working again in TermuxArch. Any progress so far?

SDRausty · 2018-06-09T23:11:50Z

Any progress so far?

Check for progress in issues like this termux/libandroid-shmem#4 one throughout this thread even though they are marked closed. Asking at IRC: wiki.archlinux.org/index.php/IRC_channel might help resolve this topic sooner.

SDRausty · 2018-06-09T23:50:37Z

#4 (comment) : Is this a https://github.com/termux/libandroid-shmem issue with sudo and similar?

SDRausty · 2018-06-09T23:57:36Z

Thread link posted at https://gitter.im/termux/offtopic?at=5b1c67f34b2d9417e1d8e617

ryad-eldajani · 2018-06-10T07:34:24Z

I'm referring to that problem when using sudo within TermuxArch:

[14:07 home ]$ sudo sudo: error in /etc/sudo.conf, line 0 while loading plugin "sudoers_policy" sudo: unable to load /usr/lib/sudo/sudoers.so: /usr/lib/sudo/sudoers.so: cannot stat shared object: Bad file descriptor sudo: fatal error, unable to load plugins

Unfortunately, I'm not that into Android development that I can judge if it's because of issues in libandroid-shmem. If you need further help or assistance, please don't hesitate to ask.

gurachan · 2018-07-05T22:14:51Z

can u force to install 32 bit of archlinux inside termux that had arm64-v8a??

sergensetup · 2018-08-28T08:29:18Z

yo,
I bumped into this same issue with sudo following my first steps in termux-archlinux.

Could this be related to systemd by any chance? I noticed sudo is now handled by systemd which is not enabled in chroot env apparently. I did not have much time to research on this lately though.

Anyone familiar with this?

SDRausty · 2018-08-28T14:46:25Z

can u force to install 32 bit of archlinux inside

@Dj-jom2x yes, with qemu and similar:

bash-4.4$ startarch c pacman -Ss qemu
extra/qemu 2.12.0-2
    A generic and open source machine emulator and virtualizer
extra/qemu-arch-extra 2.12.0-2
    QEMU for foreign architectures
extra/qemu-block-gluster 2.12.0-2
    QEMU GlusterFS block module
extra/qemu-block-iscsi 2.12.0-2
    QEMU iSCSI block module
extra/qemu-block-rbd 2.12.0-2
    QEMU RBD block module
extra/qemu-guest-agent 2.12.0-2
    QEMU Guest Agent
extra/qemu-headless 2.12.0-2
    QEMU without GUI
extra/qemu-headless-arch-extra 2.12.0-2
    QEMU without GUI, for foreign architectures
extra/vde2 2.3.2-10
    Virtual Distributed Ethernet for emulators like qemu
community/libvirt 4.5.0-1
    API for controlling virtualization engines
    (openvz,kvm,qemu,virtualbox,xen,etc)
community/python-unicorn 1.0.1-4
    Lightweight, multi-platform, multi-architecture CPU emulator framework
    based on QEMU
community/python2-unicorn 1.0.1-4
    Lightweight, multi-platform, multi-architecture CPU emulator framework
    based on QEMU
community/ruby-unicorn-engine 1.0.1-4
    Lightweight, multi-platform, multi-architecture CPU emulator framework
    based on QEMU
community/unicorn 1.0.1-4
    Lightweight, multi-platform, multi-architecture CPU emulator framework
    based on QEMU
bash-4.4$

Anyone familiar with this?

@sergensetup an information update regarding this matter is termux/proot#32 (comment) here.

SDRausty · 2018-08-28T16:56:58Z

Could this be related to systemd by any chance?

The Arch Linux systemd package is not purged at install at present. It appears to be a redundant package, since systemd is already present on device in Android. However, Arch Linux emacs seems to need it for some reason, so it is left intact at setup.

Feel free to contact https://github.com/termux/proot/issues with your insight; the more people pondering this issue, the better. Hopefully a resolution is forthcoming soon.

SDRausty · 2018-09-03T20:30:09Z

Accessing libandroid-shmem support is now possibly in TermuxArch, use setupTermuxArch.sh r for quick system refresh; libandroid-shmem support is added with this SDRausty/TermuxArch@a250672 commit. The current version of TermuxArch also sets locales from Android on the fly for Arch Linux in Termux PRoot to be in the language you wish.

mpolidori · 2018-09-05T03:33:56Z

Sudo is now working for me. Thanks to @markfelt and his modified makepkg from #38, I was able to install nosudo from the AUR. According to the AUR description, it's "a small bash script that fakes sudo using su", similar (I think) to how the modified makepkg works.

SDRausty · 2018-09-16T22:02:14Z

It appears that we have just had a break through with this topic moments ago, https://gitter.im/termux/offtopic?at=5b9ec49ce5c2cc56ad9c6814 here.

SDRausty · 2018-09-16T22:04:32Z

https://github.com/xeffyr stated:

I got sudo working with:
$ proot -r ./arch --cwd=/ -0 '/bin/sudo' /bin/ls
Probably, you messed with something when setting up proot.
Example of switching id with sudo:
$ proot -r ./arch --cwd=/ -0 /bin/sudo -u alarm /bin/id
uid=1000(alarm) gid=1000(alarm

SDRausty · 2018-09-21T15:45:02Z

Variable substitution in TermuxArch resolves sudo. Variable assignment PROOTSTMNTU="${PROOTSTMNT//--link2symlink }" drops --link2symlink from the user login proot statement. The option is necessary for root user to function properly. This change modifies the proot statement for user login with this SDRausty/TermuxArch@a0db0f1 commit.

$ startarch l user
[user11:30~]$ sudo whoami

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.

[sudo] password for root:
root
[user11:30~]$ whoami
user

startarch c addauser user creates a user account. As Arch Linux in Termux PRoot root user, use visudo to grant user permission to use sudo.

SDRausty · 2018-09-30T21:06:32Z

resolves sudo.

This is not the case should a sudo command wish to create hard links on device. Use another session, and fulfill the sudo requirements as root in Arch Linux in Termux PRoot if you encounter errors using sudo. User accounts have the link2symlink option turned off. This enables sudo to run as expected. When sudo assumes root privileges, sudo cannot migrate hard to soft links. Hence packages installed by sudo that contain hard links do not install correctly. Use a new session, and reinstall to correct any errors.

Tuff6ong · 2018-12-18T02:21:11Z

If I create a new user for arch linux in Termux Proot with

$ startarch c addauser 'my username'

it doesn't let me fill in a password for that user.

After installing sudo and starting TermuxArch with

$ startarch l 'my username'

And typing

[user11:30~]$ sudo whoami

I get the following:

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.

[sudo] password for 'my username':

Problem is, I don't have a password for the use. How do I counter this?

imShara · 2018-12-18T09:41:38Z

@Tuff6ong this is invitatio to create new password. Create it and disable sudo password with sudoers if you want

Tuff6ong · 2018-12-18T10:43:50Z

@Tuff6ong this is invitatio to create new password. Create it and disable sudo password with sudoers if you want

Well, if I try to fill in a new password during this invitation I get: 'Sorry, try again'

imShara · 2018-12-18T12:23:46Z

Should work. Try to copy-paste password (don't forget about ctrl+alt+v to paste from keyboard)

rien333 · 2019-09-01T00:48:09Z

@SDRausty I can't say that I fully follow your instructions to make sudo work.

Variable substitution in TermuxArch resolves sudo. Variable assignment PROOTSTMNTU="${PROOTSTMNT//--link2symlink }" drops --link2symlink from the user login proot statement. The option is necessary for root user to function properly. This change modifies the proot statement for user login with this SDRausty/TermuxArch@a0db0f1 commit.

Okay so, do I need to put PROOTSTMNT somewhere? Where? And why mention that commit? Has this supposedly been fixed since?

startarch c addauser user creates a user account. As Arch Linux in Termux PRoot root user, use visudo to grant user permission to use sudo.

I did both, but I'm still getting the error earlier in the thread

...
sudo: error in /etc/sudo.conf, line 0 while loading plugin "sudoers_policy"
sudo: /usr/lib/sudo/sudoers.so: Bad address

Now, maybe I didn't add the right stuff to /etc/sudoers with visudo. FYI, I used the redhat guide on sudo. Is the content of this guide what you have in mind when you say that visudo needs to be used in order to have acces to the sudo command?

I've also seen you mention libandriod-shmem a bunch of times when people ask how to make sudo work, is it needed for something? Should we install it from a regular Termux session with apt? Is it needed at all?

I have a non-rooted phone, if that is helpful. Installed TermuxArch with the official script, newest version on github.

ZZZXXX0110 · 2019-09-01T21:07:44Z

@SDRausty Are you implying that this is currently already fixed by that commit? But I'm still encountering exactly the same problem just now with a fresh install of TermuxArch.

I noticed that in another issue report (SDRausty/TermuxArch#180) You linked to this issue report on Termux Proot without actually commenting anything: termux/proot#70

Are you suggesting that this fundamentally a problem caused by Termux Proot and there's nothing can be done on the side of TermuxArch?

SDRausty · 2019-09-04T08:56:33Z

[user04:20~]$ sudo
proot warning: ptrace(PEEKDATA): I/O error
sudo: error in /etc/sudo.conf, line 0 while loading plugin "sudoers_policy"
sudo: /usr/lib/sudo/sudoers.so: Bad address
sudo: fatal error, unable to load plugins

Is a newly arisen sudo error.

currently already fixed by

The original sudo error in this issue was fixed on 20190906 with SDRausty/TermuxArch@a0db0f1

These PRoot issues might be able to resolve this new error. As there are a number of newly arisen errors with a fresh TermuxArch in a fresh Termux v0.74 installation:

Might also be appropriate links to seek resolution.

ZZZXXX0110 · 2019-09-18T15:22:48Z

This appear to be fixed by a new update to termux-proot package! :D

andhie-wijaya · 2019-09-18T17:08:52Z

Yes

SDRausty · 2020-08-05T16:14:16Z

This TermuxArch/TermuxArch@161eaba commit automates adding sudo users:

printf "%s\\n" "\$1 ALL=(ALL) ALL" >> /etc/sudoers
sed -i "s/\$1:x/\$1:/g" /etc/passwd

SDRausty mentioned this issue May 1, 2018

Assertion "IS_IN_SYSENTER(tracee)" termux/proot#13

Closed

This was referenced May 10, 2018

WebKit Browsers Showing Nothing instead of Web Content SDRausty/TermuxArch#55

Closed

liblog.so: cannot open shared object file termux/libandroid-shmem#3

Closed

shmget termux/termux-packages#502

Closed

SDRausty mentioned this issue May 15, 2018

ipcs: command not found (util-linux) termux/termux-packages#2427

Closed

SDRausty mentioned this issue Aug 28, 2018

HTOP and TOP and other packages requiring /proc do NOT work on Android 8! SDRausty/TermuxArch#103

Closed

SDRausty mentioned this issue Sep 6, 2018

Succesfully Modified Stock 'makepkg'... SDRausty/TermuxArch#38

Closed

SDRausty closed this as completed Sep 17, 2018

YadominJinta mentioned this issue Oct 13, 2018

Ubuntu使用sudo报错 YadominJinta/atilo#15

Closed

SDRausty mentioned this issue Feb 4, 2019

How to run React Native Apps in TermuxArch? SDRausty/TermuxArch#156

Closed

SDRausty mentioned this issue Aug 3, 2019

Ask of help. Thank you SDRausty/TermuxArch#180

Closed

ZZZXXX0110 mentioned this issue Sep 1, 2019

sudo error Neo-Oli/termux-ubuntu#73

Open

SDRausty mentioned this issue Sep 9, 2019

espritfunctions.sh: line 62: ceds[$i]: unbound variable SDRausty/TermuxArch#184

Closed

SDRausty mentioned this issue Jul 14, 2020

Error installing sudo (works incorrectly) SDRausty/TermuxArch#237

Closed

This was referenced Aug 3, 2020

vncserver from tigervnc package will only run as root SDRausty/TermuxArch#205

Closed

Can't use display because xauth not working after setupTermuxArch r refresh SDRausty/TermuxArch#241

Closed

SDRausty referenced this issue Dec 20, 2020

commit 276053714 on 20201220

c708446

SDRausty added the enhancement New feature or request label Jul 20, 2021

SDRausty pinned this issue Jul 20, 2021

SDRausty mentioned this issue Oct 29, 2021

Sudo doesn't works termux/proot#201

Closed

SDRausty referenced this issue in TermuxArch/TermuxArch Feb 7, 2022

commit 067945642 on 20220207

5e035cd

Sudo is non functional #4

Sudo is non functional #4

Comments

Lite5h4dow commented Mar 19, 2018

SDRausty commented Mar 21, 2018

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SDRausty commented Apr 14, 2018

Here are some links where repeating this topic may be worth the effort and time:

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