FSH_QSYSINFO - Query system information

Purpose   

This function queries the system about dynamic system variables and static 
system variables not returned by DosQSysInfo. 

Calling Sequence   

int far pascal FSH_QSYSINFO(index, pData, cbData)

unsigned short index;
char far * pData;
unsigned short cbData;

Where   

index is the variable to return. 

index == 1 indicates maximum sector size. 

index == 2 indicates process identity. The data returned will be as 
follows: 

struct {
    unsigned short PID;
    unsigned short UID;
    unsigned short PDB;
}

index == 3 indicates absolute thread number for the current thread. This 
will be returned in an unsigned short field. 

index == 4 indicates verify on write flag for the process. This will be 
returned in an unsigned char (byte) field. Zero means verify is off, 
non-zero means it is on. 

pData is the long address to the data area. 

cbData is the length of the data area. 
  

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_INVALID_PARAMETER 
the index is invalid. 

oERROR_BUFFER_OVERFLOW 
the specified buffer is too short for the returned data. 
  

Remarks   

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