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List running processes using files deleted by recent upgrades
When upgrading packages, the package manager won't restart services or programs that depend on some updated library, for obvious reasons. This has security implications in the case of outdated libraries still in use.
OpenSUSE has a cool
zypper ps command to check for programs and services using deleted files.
It's also available in other distros as
zypp-CheckAccessDeleted from the
Those commands parse
lsof output and check
/proc/<pid>/cgroup to extract the service names.
Here's a Python version that checks
/proc/<pid>/maps, extracting information from other files in
lsof dependency needed.
After each upgrade or removal of packages, there may be running processes on the system which continue to use meanwhile deleted files. zypper ps lists all processes using deleted files, together with the corresponding files, and a service name hint, in case it’s a known service. This gives a hint which services may need to be restarted after an update. Usually programs which continue to use deleted shared libraries. The list contains the following information:
|PID||ID of the process|
|PPID||ID of the parent process|
|UID||ID of the user running the process|
|Login||Login name of the user running the process|
|Command||Command used to execute the process|
|Service||Service name, if command is associated with a system service|
|Files||The list of the deleted files|
restartable.py [OPTIONS] List running processes using files deleted by recent upgrades Options: -P, --proc PROC_DIRECTORY Specify /proc directory -s, --short Create a short table not showing the deleted files. Given twice, show only processes which are associated with a system service. Given three times, list the associated system service names only. -v, --verbose Show the complete command line
- Verified to work on Python 3.4+
- You must run it as root to see the information you want.
- The output is different from
zypper psto be easily parseable
BUGS / LIMITATIONS
- The service names can only be extracted if started by Systemd
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