ThinkC Locate the current System Folder

[eric]

I'm trying find how to open the currently running System file. System Folders can be named anything - just needs to have a System in it.

Is there a Toolbox API to determine the currently running System? My retro usenet search didn't turn up much.

 

[joevt]

SysEnvRec sysEnv;
OSErr err = SysEnvirons (1, &sysEnv);

sysVRefNum of SysEnvRec is a working directory ID, not a volume reference ID or a directory reference ID.

The currently running System file is always open. So you would get the file reference number (probably just kSystemResFile), and use something like PBGetFCBInfoSync to get more info if you want to know where it is.