В Thu, 04 Jun 2015 10:08:52 +0200 Sébastien Luttringer <se...@seblu.net> пишет:
> Hello, > > In order to restart updated daemons on filesystems, I created a > script[1] which lists all PID by service and look for updated files in > /proc/$pid/maps. > > To get all PIDs of a service, I use "systemctl show -p ControlGroup" to > craft a path to the "tasks" file. > > But something wrong happen with escaping with some units (e.g serial > -getty) > > This works: > #cat /sys/fs/cgroup/systemd/$(systemctl show systemd-logind.service -p > ControlGroup|cut -f2 -d=)/tasks > 286 > > This not: > #cat /sys/fs/cgroup/systemd/$(systemctl show serial-getty@ttyS0.service > -p ControlGroup|cut -f2 -d=)/tasks > /sys/fs/cgroup/systemd/$(systemctl show -p ControlGroup|cut -f2 -d=) > cat: /sys/fs/cgroup/systemd//system.slice/system-serial\ > x5cx2dgetty.slice/serial-getty@ttyS0.service/tasks: No such file or > directory > It seems to work here using systemd 210 on openSUSE bor@opensuse:~/src/systemd> cat /sys/fs/cgroup/systemd/$(systemctl show systemd-rfkill@rfkill1.service -p ControlGroup | cut -f2 -d=)/tasks bor@opensuse:~/src/systemd> systemctl show systemd-rfkill@rfkill1.service -p ControlGroup --no-pager ControlGroup=/system.slice/system-systemd\x2drfkill.slice/systemd-rfkill@rfkill1.service > What's the right way to get all pid belonging to a service? How can I > unescape strings from systemctl? > Well, you can use systemd-escape -u, but real question is why it gets escaped twice and is it intentional. > This is happening since a long time. I made these tests on systemd v220 > et v219. > > Cheers, > > [1] https://github.com/seblu/archutils/blob/master/checkservices >
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