Hi folks, First of all thanks for all good answers. After looking deep how the "ps" command gets the unit name, I found out that it uses function "sd_pid_get_unit" from systemd/sd-login.h in libsystemd.so. So I decide to use it as well. Thanks a lot.
Best wishes, Kevin 2017-12-21 23:05 GMT+08:00 Tomasz Torcz 👁️ <to...@pipebreaker.pl>: > On Thu, Dec 21, 2017 at 01:48:29PM +0800, Kevin Hsu wrote: > > Hi folks, > > > > I am looking for a good way to backtrace systemd service by a process id. > > The "systemctl status <pid>" command is available to do the magic. It > will > > show a full status of the service that creates the > > pid. But this command gives too many details. The only thing I need is > the > > service unit name. Is there any simple way instead of parsing results > from > > "systemctl status" ? > > > > For example like > > > > > systemctl service-get 5566 > > > nginx.service > > > Look into /proc/<pid>/cgroup > > -- > Tomasz Torcz Once you've read the dictionary, > xmpp: zdzich...@chrome.pl every other book is just a remix. > _______________________________________________ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/systemd-devel >
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