Ubuntu
commons-daemon package

kernel: capability: warning: `jsvc' uses 32-bit capabilities (legacy support in use)

Bug #1886871 reported by Luciano Rodrigues on 2020-07-08

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	commons-daemon (Ubuntu)	New	Undecided	Unassigned

Bug Description

$ lsb_release -rd
Description: Ubuntu 20.04 LTS
Release: 20.04

$ apt-cache policy libcommons-daemon-java
libcommons-daemon-java:
  Installed: 1.0.15-8
  Candidate: 1.0.15-8
  Version table:
*** 1.0.15-8 500
        500 http://ports.ubuntu.com/ubuntu-ports focal/universe arm64 Packages
        100 /var/lib/dpkg/status

$ uname -a
Linux ubuntu 5.4.0-1013-raspi #13-Ubuntu SMP Mon Jun 15 03:17:37 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux

Description:

When using the jsvc to start a Java daemon (Omada controller), the following warning shows on log:

kernel: capability: warning: `jsvc' uses 32-bit capabilities (legacy support in use)

I managed to download the source code from commons-daemon, compile and overwrite the jsvc binary. No warnings after that.

Please note that I had to change the Makedefs file as it was not including the linux native headers by adding -I/usr/lib/jvm/java-11-openjdk-arm64/include/linux to INCLUDES.

Source download: https://commons.apache.org/proper/commons-daemon/download_daemon.cgi

Similar to #390803