On 05/24/15 02:01 AM, James Powell wrote:
SMF still relies of various other daemons to work
No, real case is exactly opposite...all other daemons relies of SMF.
After initialisation, kernel creates PID 0 (sched), and after that,
starts PID 1 (init).
The init process reads the /etc/inittab and /etc/default/init and
follows the instructions.
Inittab in my OI:
------
ap::sysinit:/sbin/autopush -f /etc/iu.ap
sp::sysinit:/sbin/soconfig -d /etc/sock2path.d
smf::sysinit:/lib/svc/bin/svc.startd >/dev/msglog 2<>/dev/msglog
</dev/console
p3:s1234:powerfail:/usr/sbin/shutdown -y -i5 -g0 >/dev/msglog 2<>/dev/msglog
--------
So, only 2 daemons that SMF depends on are SMF itself
/lib/svc/bin/svc.startd
/lib/svc/bin/svc.configd
with PID 10 and PID 12 respectively by default.
For example, if I kill svc.startd, it automatically restarts (although
this can be turned off through the inittab..) with another PID, but
nothing in PID 1 except /sbin/init
-------------
root@hipster-oi:~# kill 10
root@hipster-oi:~# ptree
12 /lib/svc/bin/svc.configd
46 /sbin/dlmgmtd
48 /lib/inet/netcfgd
......
....
...
1127 gkrellm
1220 /usr/bin/gnome-terminal -x /bin/sh -c cd '/home/draganoi' && exec
$SHELL
1221 gnome-pty-helper
1223 /bin/bash
1234 bash
1241 ptree
1240 /lib/svc/bin/svc.startd
root@hipster-oi:~#
---------
Beautiful in simplicity :)
Cheers,
Dragan
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