$ bash setupTermuxArch.sh not working

[djrivington]

setupTermuxArch.sh: line 392: /proc/sys/kernel/random/uuid: Permission denied
TermuxArch warning:  Script signal 1 generated!
setupTermuxArch.sh: line 232: tmpdir: unbound variable

I reinstalled Termux today on both my aarch64 phone and armv8 chromebook and now I'm facing this issue on both devices.

[SDRausty]

Can you $ ls -al /proc/sys/kernel/random/? What does $ cat /proc/sys/kernel/random/* give? Are the ROMs stock? A little bit more information is requested. Use setupTermuxArch.sh sysinfo.

[djrivington]

Sorry about that. I wasn't sure where to start. I'm primarily focused on the phone. It's a galaxy s8 active running stock Android 8 without root. Until I reinstalled Termux, TermuxArch had been running flawlessly.

> ls -al /proc/sys/kernel/random/ > 

shows:

ls: /proc/sys/kernel/random/boot_id: Permission denied
ls: /proc/sys/kernel/random/entropy_avail: Permission denied
ls: /proc/sys/kernel/random/poolsize: Permission denied
ls: /proc/sys/kernel/random/read_wakeup_threshold: Permission denied
ls: /proc/sys/kernel/random/urandom_min_reseed_secs: Permission denied
ls: /proc/sys/kernel/random/uuid: Permission denied
ls: /proc/sys/kernel/random/write_wakeup_threshold: Permission denied
total 0
dr-xr-xr-x    1 root     root             0 Aug 19 11:06 .
dr-xr-xr-x    1 root     root             0 Aug 19 11:06 ..

and

cat /proc/sys/kernel/random/*

shows:

cat: can't open '/proc/sys/kernel/random/boot_id': Permission denied
cat: can't open '/proc/sys/kernel/random/entropy_avail': Permission denied
cat: can't open '/proc/sys/kernel/random/poolsize': Permission denied
cat: can't open '/proc/sys/kernel/random/read_wakeup_threshold': Permission denied
cat: can't open '/proc/sys/kernel/random/urandom_min_reseed_secs': Permission denied
cat: can't open '/proc/sys/kernel/random/uuid': Permission denied
cat: can't open '/proc/sys/kernel/random/write_wakeup_threshold': Permission denied

and

bash setupTermuxArch.sh sysinfo

returns:

setupTermuxArch.sh: line 392: /proc/sys/kernel/random/uuid: Permission denied
TermuxArch warning:  Script signal 1 generated!
setupTermuxArch.sh: line 232: tmpdir: unbound variable

I've been an arch and arch arm user for about a year but I'm still very green to chrooted and fakerooted environments. It seems from most errors that it's a permissions issue but the error I get from sysinfo seems to point to a syntax error in the bash script that doesn't exist.

[s73obrien]

I'm having the same issue. Looks like it is related to termux/termux-app#299, as I am running Oreo as well.

[s73obrien]

Changed the path in preptmpdir() to avoid using /proc/sys/kernel/random/uuid and it ran past that, but hangs up with some illegal character errors from curl down the line.

[djrivington]

Thanks. Studying that issue now. I passed it over last night mistaking it to be unrelated.

[SDRausty]

@s73obrien This is related to a new function: preptmpdir() It's supposed to be a major improvement, and it appears that we have run into a hiccup on certain devices. More information regarding proc random is requested.

Can you $ ls -al /proc/sys/kernel/random/? What does $ cat /proc/sys/kernel/random/* give? Are the ROMs stock? A little bit more information is requested, including uname -a:

[s73obrien]

Sure thing!

$ ls -al /proc/sys/kernel/random
ls: cannot access '/proc/sys/kernel/random/boot_id': Permission denied
ls: cannot access '/proc/sys/kernel/random/entropy_avail': Permission denied
ls: cannot access '/proc/sys/kernel/random/poolsize': Permission denied
ls: cannot access '/proc/sys/kernel/random/read_wakeup_threshold': Permission denied
ls: cannot access '/proc/sys/kernel/random/urandom_min_reseed_secs': Permission denied
ls: cannot access '/proc/sys/kernel/random/uuid': Permission denied
ls: cannot access '/proc/sys/kernel/random/write_wakeup_threshold': Permission denied
total 0
dr-xr-xr-x 1 root root 0 Aug 19 12:36 .
dr-xr-xr-x 1 root root 0 Aug 19 12:36 ..
-????????? ? ?    ?    ?            ? boot_id
-????????? ? ?    ?    ?            ? entropy_avail
-????????? ? ?    ?    ?            ? poolsize
-????????? ? ?    ?    ?            ? read_wakeup_threshold
-????????? ? ?    ?    ?            ? urandom_min_reseed_secs
-????????? ? ?    ?    ?            ? uuid
-????????? ? ?    ?    ?            ? write_wakeup_threshold

$ cat /proc/sys/kernel/random/*
cat: /proc/sys/kernel/random/boot_id: Permission denied
cat: /proc/sys/kernel/random/entropy_avail: Permission denied
cat: /proc/sys/kernel/random/poolsize: Permission denied
cat: /proc/sys/kernel/random/read_wakeup_threshold: Permission denied
cat: /proc/sys/kernel/random/urandom_min_reseed_secs: Permission denied
cat: /proc/sys/kernel/random/uuid: Permission denied
cat: /proc/sys/kernel/random/write_wakeup_threshold: Permission denied

Stock Android 8 on Galaxy S9

$ uname -a
Linux localhost 4.9.65-13087505 #1 SMP PREEMPT Wed Feb 28 18:50:17 KST 2018 aarch64 Android

[s73obrien]

So I uninstalled curl in order to force the script to use wget, and it downloaded with no issues. Unpacking now....

[s73obrien]

Aside from a handful of download errors from updating the pacman database, it seems to have installed correctly. (well, I got a prompt, anyway)

[djrivington]

@s73obrien Very cool. What did you change the path to in preptmpdir()?

[SDRausty]

This issue is resolved. tmp="$(date +%s)" tmp is now set to date, not uuid. Thank you for your time and help. Any idea why uuid is not readable on some devices? I am curious about the rationale.

[djrivington]

Working like a charm now after a refresh. Thank you!

[SDRausty]

You are welcome; thank you for confirming 🏌

[s73obrien]

I don't really know, but according to the conversation on termux/termux-app#299, sounds like Oreo brought tighter permissions around information related to currently running processes. I suppose that uuid generation can be considered a part of that.