[SOLVED] unable to find udev executable

[dpaddy]

Context: I am old and becoming inept, so please be detailed with advice...

I attempted to read the news (eselect news list) and follow instructions -- sorry I can't pin that down more precisely -- and at some point thought it appropriate to upgrade world... that succeeded except that systemd-utils seemed to need +udev as a flag (or so I thought emerge was telling me).

I had a look at package.use where I was surprised to find -udev as a flag to systemd-utils (or so I seem to recall, I might be mistaken) so I removed -udev as a flag to systemd-utils whereupon I proceeded with emergeing it. That resulted in a system which boots but complains "unable to find udev executable" and whereas the keyboard works in the console, I have no keyboard or mouse when I start X. CALL THIS STATE Q

Thinking I f*cked the poodle, I tried to add back the -udev flag and emerge systemd-utils which resulted in a long list from emerge @preserved-rebuild which scared me so I stopped there because (among other things) xorg-server would have been rebuilt by emerge @preserved-rebuild which makes no sense to me because it did not change when going from systemd-utils -udev to +udev so how therefore should xorg-server change due to my putting systemd-utils back to -udev ?!

At this point it was clear I had no clue but after spending time with google I somehow got the idea that I should return to STATE Q because fixing from there might make sense. O.K., emergeing systemd-utils with +udev compiled but produced "failed to send reload request: Connection refused." After that I rebooted which seemed to put me back in STATE Q.

There are paths in /etc/init.d/udev which presumably are being searched for (some variant of) udev so I thought maybe I somehow failed to have udev installed (or I somehow removed it) but emerge -vp udev reports virtual/udev-217-r7 is installed and I don't understand how my system used to work right fine if I now need to have more udev something or other.

The above is as good as my memory can manage. My system is a new install just a week ago using profile default/linux/amd64/23.0/desktop (stable) and uname reports Linux 6.630-gentoo #11 SMP PREEMPT_DYNAMIC x86_64 AMD Ryzen 9 5950X.

At this point understanding would be a luxury because I would be happy enough if I had functioning keyboard and mouse in X.

[Phoenix591]

For openrc systems systemd-utils with the udev useflag contains udev. For systemd systems systemd contains udev.

[Hu]

I suspect that your keyboard problem in X is because udev is not running, so if we find and fix why openrc cannot start udev, we solve both problems at once. Please show the output of emerge --verbose --info sys-apps/systemd-utils, as run in state Q.

[dpaddy]

Code: Select all

Portage 3.0.65 (python 3.12.3-final-0, default/linux/amd64/23.0/desktop, gcc-13, glibc-2.39-r6, 6.6.30-gentoo x86_64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-6.6.30-gentoo-x86_64-AMD_Ryzen_9_5950X_16-Core_Processor-with-glibc2.39
KiB Mem:    65777036 total,  65392800 free
KiB Swap:   67108860 total,  67108860 free
Timestamp of repository gentoo: Sat, 20 Jul 2024 09:00:00 +0000
Head commit of repository gentoo: 7f917d61ec5d02c35c8b7cad4abd7b05e757a58d
sh bash 5.2_p26-r6
ld GNU ld (Gentoo 2.42 p3) 2.42.0
app-misc/pax-utils:        1.3.7::gentoo
app-shells/bash:           5.2_p26-r6::gentoo
dev-build/autoconf:        2.13-r8::gentoo, 2.71-r7::gentoo
dev-build/automake:        1.16.5-r2::gentoo
dev-build/cmake:           3.28.5::gentoo
dev-build/libtool:         2.4.7-r4::gentoo
dev-build/make:            4.4.1-r1::gentoo
dev-build/meson:           1.4.1::gentoo
dev-lang/perl:             5.38.2-r3::gentoo
dev-lang/python:           3.11.9-r1::gentoo, 3.12.3-r1::gentoo
dev-lang/rust-bin:         1.77.1::gentoo
sys-apps/baselayout:       2.15::gentoo
sys-apps/openrc:           0.54.2::gentoo
sys-apps/sandbox:          2.38::gentoo
sys-devel/binutils:        2.42-r1::gentoo
sys-devel/binutils-config: 5.5::gentoo
sys-devel/clang:           17.0.6::gentoo
sys-devel/gcc:             13.3.1_p20240614::gentoo
sys-devel/gcc-config:      2.11::gentoo
sys-devel/lld:             17.0.6::gentoo
sys-devel/llvm:            17.0.6::gentoo
sys-kernel/linux-headers:  6.6-r1::gentoo (virtual/os-headers)
sys-libs/glibc:            2.39-r6::gentoo
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gentoo
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VIDEO_CARDS="intel"
XDG_CONFIG_DIRS="/etc/xdg"
XDG_DATA_DIRS="/usr/local/share:/usr/share"
XDG_RUNTIME_DIR="/run/user/1000"
XDG_SEAT="seat0"
XDG_SESSION_CLASS="user"
XDG_SESSION_ID="1"
XDG_SESSION_TYPE="tty"
XDG_VTNR="1"
XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipp2p iface geoip fuzzy condition tarpit sysrq proto logmark ipmark dhcpmac delude chaos acco
unt"
ac_cv_c_undeclared_builtin_options="none needed"
enable_year2038="no"
gl_cv_compiler_check_decl_option="-Werror=implicit-function-declaration"
gl_cv_func_getcwd_path_max="yes"

=================================================================
                        Package Settings
=================================================================

sys-apps/systemd-utils-254.13::gentoo was built with the following:
USE="acl kmod tmpfiles udev -boot -kernel-install -secureboot (-selinux) (-split-usr) -sysusers -test -ukify" ABI_X86="(64) -32 (-x32)" PYTHON_SINGLE_TAR
GET="python3_12 -python3_10 -python3_11"

[Administrator edit: added [code] tags to preserve output layout; broke long whitespace-free lines in code tags to fix thread layout. -Hu]

[Hu]

Code: Select all

INSTALL_MASK="/usr/lib/systemd"

=================================================================
                        Package Settings
=================================================================

sys-apps/systemd-utils-254.13::gentoo was built with the following:
USE="acl kmod tmpfiles udev -boot -kernel-install -secureboot (-selinux) (-split-usr) -sysusers -test -ukify" ABI_X86="(64) -32 (-x32)" PYTHON_SINGLE_TARGET="python3_12 -python3_10 -python3_11"

You built with USE=-split-usr, so systemd-udevd would have been written to /usr/lib/systemd. Your INSTALL_MASK deleted that directory and everything in it. Therefore, you have no /usr/lib/systemd/systemd-udevd, and thus it cannot be found. Rebuild systemd-utils without that INSTALL_MASK.

[dpaddy]

I thought that -- much like garlic is famed to protect against vampires -- INSTALL_MASK="/usr/lib/systemd" would to some extent keep me safe from systemd; emphasis on "to some extent" given that systemd has evidently wormed its way into gentoo (as Pottering forecast: "the writing is on the wall").

That INSTALL_MASK is in my make.conf so I'm afraid that removing it invites the vampires to move in and party. Is there a way to override that mask on a per-package basis (similar to setting -use_flag in package.use) and if so, then how exactly does one do so?

[Hu]

If you do not want to install anything from systemd, then the right way to do this is to tell Portage not to install any package associated with systemd. Use /etc/portage/package.mask to block all systemd-related packages. Use /etc/portage/package.use to instruct any packages with optional systemd support not to include that support.

You might, or might not, be able to use package.env to set INSTALL_MASK on a per-package basis. Only some settings are supported there.

[dpaddy]

Sincerely appreciated, thank you.

EDIT:
My (failing) memory of my impression from googling about the issue is that some believe a degree of malevolence is (or will be) brought to bear to sprinkle systemd rot throughout various locations such that dealing with /usr/lib/systemd will not suffice to mitigate against systemd invading your system.

I found that /usr/lib/systemd on my system is full of all sorts of crap that I have no idea of how it got there. In any case, the following seems to work for me (so far; I suspect the future might demonstrate otherwise).

Code: Select all

$ grep MASK /etc/portage/make.conf
INSTALL_MASK='/usr/lib/systemd'
$ cat /etc/portage/env/remove-systemd-install_mask 
INSTALL_MASK=''
$ cat /etc/portage/package.env 
sys-apps/systemd-utils remove-systemd-install_mask
$ rm -r /usr/lib/systemd/
$ emerge -v --ask systemd-utils

Whereas

$ emerge --verbose --info sys-apps/systemd-utils

still reports

INSTALL_MASK='/usr/lib/systemd'

nevertheless I find

Code: Select all

 # ls /usr/lib/systemd/
network  systemd-udevd

In particular, /usr/lib/systemd now has far less shit. Moreover, after reboot X works fine -- I have mouse and keyboard
I intend to delete /usr/lib/systemd/network hoping that cruft can be dispensed with, but the experiment will have to wait -- I do not currently have the energy (courage?) to face fixing whatever that might break.

Finally, I will admit a willingness to commit making a $100 per year donation (as long as I live) to gentoo.org if that all goes toward rooting out systemd crap and preventing systemd invading the systems of those who despise it. A pipe dream perhaps, but if there were 5000 gentoo users like me -- I have no idea of how many people are so crazy as to use gentoo -- that would provide half a million towards the effort.

[Babiz]

Hi folks, today I want to share my little experience cause I find "error" on package systemd-utils make broken link to udevadm, it can various system udev failure, if you rebuild gentoo-kernel...

So I'm done when switch ~amd64 to amd64 globally, thanks useful info found on this great forum, but in between I run kernel rebuild and look for dracut error like "unable to find executable" , it's simple dead link, harmless if you know this.
(Because udevadm bin it's linked to wrong path I don't know why.)

/../..

This make udev init (gentoo-kernel, initramfs generation, OpenRC, split-usr) broken if restart you device and result display manager fail to load!

!!Beware to reboot system if systemd-utils and kernel initramfs are rebuilded under upgrade or downgrade!!

So make sure link is effective, I make workaround and set manually new symbolic link to udevadm executable but I think is a great idea trigger bug report for systemd-utils and update some related gentoo wiki pages too.

https://i.postimg.cc/DZ9WyPg8/2024-09-24-20-13.png
This above is example of broken link warns you with command:

IpnoRospo ~ # ls -l /usr/lib/systemd/systemd-udevd
lrwxrwxrwx 1 root root 17 24 set 22.16 /usr/lib/systemd/systemd-udevd -> ../../bin/udevadm

Below follow simple commands for fix it:

IpnoRospo ~ # rm /usr/lib/systemd/systemd-udevd
IpnoRospo ~ # ln -s /bin/udevadm /usr/lib/systemd/systemd-udevd
IpnoRospo ~ # ls -l /usr/lib/systemd/systemd-udevd
lrwxrwxrwx 1 root root 12 24 set 22.18 /usr/lib/systemd/systemd-udevd -> /bin/udevadm

[Hu]

Generally, reporting problems in a SOLVED thread is less effective than reporting them in a new thread.

What is the output of emerge --info --verbose sys-apps/systemd-utils ; namei -l /bin/udevadm /usr/bin/udevadm /lib /usr/lib/systemd/systemd-udevd?

[Babiz]

Generally, reporting problems in a SOLVED thread is less effective than reporting them in a new thread.

What is the output of emerge --info --verbose sys-apps/systemd-utils ; namei -l /bin/udevadm /usr/bin/udevadm /lib /usr/lib/systemd/systemd-udevd?

Hello, here you can see:

namei.txt
Your paste can be seen here: https://bpa.st/KVQD6

nameifix.txt (After link manual fix)
Your paste can be seen here: https://bpa.st/2VDTG

Portage info
Your paste can be seen here: https://bpa.st/6TXV2

edit: I look at portage info, my guess, maybe, is a python confilict?
I see portage build with python 3.11 and systemd-utils is on python 3.12 lol.

I mess with python before revert to stable amd64 and I before rebuild various python targets,
I start installed python_3.12 version but on unstable ~amd64 recently pull out python_3.13
So I mess with installation and decice to revert to stable packages...too many python fo me guys