Program does not have write permissions

[vtyutin]

Hi guys,
Please assist me to solve the issue below.
I created the program that write to file some log data.
If I run this program as startup process after reboot program fails to have write access to file system.
But If I ssh as root to my camera and start my program manually from command line everything works fine.
So question is how to run my program on startup with root permissions?

[nik0]

Every processes have root permission on this device