This page contains a list of all supported IOCTL commands for an rxdsk created volume.

As defined in the rxdsk.c source file of the module, the following are for special cases:

The INVALID_CDQUERY_IOCTL macro was implemented to work around an issue surfaced in later versions of udev in which, udev is unsure of the type of device and assuming that it may be a CDROM device, it sends an CDROM_GET_CAPABILITY (defined in include/linux/cdrom.h as 0x5331). This causes a couple of problems when creating an accessing the rxd block node. The macro was defined so we can appropriately return an -EINVAL upon detection.

The RXD_GET_STATS macro was implemented for possible future support of obtaining statistics for that rxdsk volume but for now, it only reports the maximum accessed sector (max_blk_alloc in the rxdsk_device structure) for archival/restoring support in the rxadm userland utility.

Each supported command will return its respective values. The rxdsk block device will return an -ENOTTY if the command is not supported.