Yea, thats the same problem I had too, I developed a simple "spydir.c" for that: https://killtube.org/downloads/cod2/wsl/

Output:

Code:
// ...
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.callofduty2/pb/pbsvnew.so", "rb")> ret=0
fopen("/root/.cal

This might be a clue, trying to fopen pbsvnew.so all the time