Queries attached devices.
int ioctl(FileDescriptor, GIOQUERYID, Arg) int FileDescriptor; struct gioqueryid *Arg;
The GIOQUERYID ioctl subroutine call returns the identifier of devices connected to the GIO adapter. The ID of the device connected to port 0 is returned in the first field of the structure, and the device connected to port 1 is returned in the second field of the structure. Valid device IDs are as follows:
#define giolpfkid 0x01 /* LPFK device ID */ #define giodialsid 0x02 /* dials device ID */
|FileDescriptor||Specifies the open file descriptor for the gio adapter.|
|Arg||Specifies the address of a gioqueryid structure.|
This ioctl subroutine call is part of Base Operating System (BOS) Runtime.