This commit adds a "truncate" flag that can be added to a service
description between the "tty" keyword and the path string.
If the flag is set, the output file is truncated to 0 after opening.
This probably requires some remodeling in the future as the tty keyword
no longer deals with just tty devices.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
We no longer need to keep entire scripts in init program (i.e. saving space)
and reduce the code and complexity of the init program.
The runsvc tool can later be extended to do more complex child setup, such
as configuring namespaces or seccomp without adding complexity or memory
footprint to init.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
