(gdb) call umask(0)
$1 = 2
(gdb) call umask(2)
$2 = 0
(gdb) quit
A debugging session is active.
Inferior 1 [process 7409] will be detached.
Quit anyway? (y or n) y
Detaching from program: /opt/stackstorm/st2/bin/python, process 7409
[root@localhost ~]# ps -A | grep 7409
7409 pts/1 00:00:01 st2actionrunner
[root@localhost ~]# stat /proc/7409
File: `/proc/7409'
Size: 0 Blocks: 0 IO Block: 1024 directory
Device: 3h/3d Inode: 100003 Links: 8
Access: (0555/dr-xr-xr-x) Uid: ( 0/ root) Gid: ( 494/st2packs)
Access: 2016-03-03 10:07:01.035191285 +0000
Modify: 2016-03-03 10:07:01.035191285 +0000
Change: 2016-03-03 10:07:01.035191285 +0000