FSH_IOSEMCLEAR - Clear an I/O event semaphore

Purpose   

This function allows an FSD to clear the I/O event semaphore that is a 
part of the Extended Strategy request packet. 

Calling Sequence   

int far pascal FSH_IOSEMCLEAR(pSem)

Where   

pSem is the handle to the I/O event semaphore. 
  

Returns   

If no error is detected, a zero error code is returned. If an error is 
detected, one of the following error codes is returned: 

oERROR_EXCL_ALREADY_OWNED 
the exclusive semaphore is already owned. 

oERROR_PROTECTION_VIOLATION 
the semaphore is inaccessible. 
  

Remarks   

FSH_IOSEMCLEAR may block. 

For a detailed description of the Extended Strategy request interface, 
please see the OS/2 Version 2.0 Physical Device Driver Reference   

Note:   OS/2 does not validate input parameters. An FSD, therefore, should 
call FSH_PROBEBUF where appropriate.