>From the manual page capabilities(7): CAP_SYS_NICE * Lower the process nice value (nice(2), setpriority(2)) and change the nice value for arbitrary processes; * set real-time scheduling policies for calling process, and set scheduling policies and priorities for arbitrary processes (sched_setscheduler(2), sched_setparam(2), sched_setattr(2)); * set CPU affinity for arbitrary processes (sched_setaffin‐ ity(2)); * set I/O scheduling class and priority for arbitrary processes (ioprio_set(2)); * apply migrate_pages(2) to arbitrary processes and allow pro‐ cesses to be migrated to arbitrary nodes; * apply move_pages(2) to arbitrary processes; * use the MPOL_MF_MOVE_ALL flag with mbind(2) and move_pages(2)
No idea, if cups-browsed should be allowed to change the nice value of *arbitrary* processes. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1897369 Title: apparmor: Allow cups-browsed to change nice value (CAP_SYS_NICE) Status in cups package in Ubuntu: New Bug description: In Ubuntu 20.04.1 with *cups-browsed* 1.27.4-1, apparmor prevents `/usr/sbin/cups-browsed` to change its nice value. $ sudo dmesg | grep apparmor [541870.509461] audit: type=1400 audit(1600898428.089:60): apparmor="DENIED" operation="capable" profile="/usr/sbin/cups-browsed" pid=62030 comm="cups-browsed" capability=23 capname="sys_nice" [628298.779668] audit: type=1400 audit(1600984854.115:61): apparmor="DENIED" operation="capable" profile="/usr/sbin/cups-browsed" pid=66850 comm="cups-browsed" capability=23 capname="sys_nice" [714667.424963] audit: type=1400 audit(1601071220.527:62): apparmor="DENIED" operation="capable" profile="/usr/sbin/cups-browsed" pid=76828 comm="cups-browsed" capability=23 capname="sys_nice" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1897369/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp