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:

• ERROR_INVALID_PARAMETER – the index is invalid.
• ERROR_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.