Time Machine

Tool for manipulating time in running processes.

Goals

1. Run programs with different time than on the operating system.
2. Manipulate time in running processes.

Usage

Load timemachine.so into dynamically linked program with LD_PRELOAD. Set time offset in seconds in TIME_MACHINE_OFFSET environment variable.

LD_PRELOAD=./timemachine.so TIME_MACHINE_OFFSET=3153600000 date

Manipulate time by writing either positive or negative offset in secconds to /tmp/timemachine-PID/set.

echo 123 > /tmp/timemachine-9876/set

Check effective offset by reading file /tmp/timemachine-PID/get.

cat /tmp/timemachine-9876/get

Log errors by setting TIME_MACHINE_LOG environnment variable to any value.