This appears to be due to an intentional change in behavior to improve
security which I believe was introduced in 19.10. To restore the older
behavior, create `/etc/sysctl.d/protect-links.conf` with the contents:
fs.protected_regular = 0
Then restart procps:
sudo systemctl restart
apport information
** Tags added: apport-collected
** Description changed:
1. create folder by root
2. add wt permission flags to all in that folder
3. flock a file by user in that folder - success
4. flock the same file by root - error: Permission denied
It is somehow important that
test@ubuntu20-04:~$ uname -a
Linux ubuntu20-04 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
test@ubuntu20-04:~$ cat /etc/*release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu 20.04 LTS"
NAME="Ubuntu"
Thank you for taking the time to report this bug and helping to make
Ubuntu better. It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general. It is important that bug reports be filed about source
packages so that people
This applies to Ubuntu 20.04 only. No error in Ubuntu 16.04, Debian 10.
** Tags added: focal
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https://bugs.launchpad.net/bugs/1875667
Title:
root cannot flock user file in rwt dir if
