Docs » Autodocs » trackdisk.device » TD_ADDCHANGEINT
TD_ADDCHANGEINT -- add a disk change software interrupt handler.
This command lets you add a software interrupt handler to theTD_REMCHANGEINT(), <devices/trackdisk.h>, <exec/interrupts.h>, exec.library/Cause()
disk device that gets invoked whenever a disk insertion or removal
You must pass in a properly initialized Exec Interrupt structure
and be prepared to deal with disk insertions/removals
immediately. From within the interrupt handler, you may only call the
status commands that can use IOF_QUICK.
To set up the handler, an Interrupt structure must be initialized.
This structure is supplied as the io_Data to the TD_ADDCHANGEINT
command. The handler then gets linked into the handler chain and
gets invoked whenever a disk change happens. You must eventually
remove the handler before you exit.
This command only returns when the handler is removed. That is,
the device holds onto the IO request until the TD_REMCHANGEINT command
is executed with that same IO request. Hence, you must use SendIO()
with this command.
IO REQUEST INPUT
io_Device preset by the call to OpenDevice()
io_Unit preset by the call to OpenDevice()
io_Length sizeof(struct Interrupt)
io_Data pointer to Interrupt structure
IO REQUEST RESULT
io_Error - 0 for success, or an error code as defined in