Show module version sysfs file for built-in modules?

[Tomas Carnecky]

Some userspace tools check /sys/modules/XYZ/version to determine  
whether the required module is available and the version compatible  
with the userspace tool. But that sysfs file is not shown when the  
module is built into the kernel (as opposed being a loadable module).  
Is there a reason for that behavior? Or is there another way for  
userspace to check the presence and version of a module?
The userspace tool in question here is the open-iscsi daemon (iscsid)  
which checks /sys/modules/scsi_transport_iscsi/version and refuses to  
start if that file doesn't exist.

thanks
tom

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