nbd_aio_opt_abort3

Usage

 #include <libnbd.h>
 int nbd_aio_opt_abort (
       struct nbd_handle *h
     );

Overview

Request that the server finish negotiation, gracefully if possible, then close the connection. This can only be used if nbd_set_opt_mode(3) enabled option mode.

To determine when the request completes, wait for nbd_aio_is_connecting(3) to return false.

Return value

If the call is successful the function returns 0.

Errors

On error -1 is returned.

Refer to "ERROR HANDLING" in libnbd(3) for how to get further details of the error.

The following parameters must not be NULL: "h". For more information see "Non-NULL parameters" in libnbd(3).

Handle state

nbd_aio_opt_abort can be called when the handle is in the following state:

 ┌─────────────────────────────────────┬─────────────────────────┐
 │ Handle created, before connecting   │ ❌ error                │
 │ Connecting                          │ ❌ error                │
 │ Connecting & handshaking (opt_mode) │ ✅ allowed              │
 │ Connected to the server             │ ❌ error                │
 │ Connection shut down                │ ❌ error                │
 │ Handle dead                         │ ❌ error                │
 └─────────────────────────────────────┴─────────────────────────┘

Version

This function first appeared in libnbd 1.4.

If you need to test if this function is available at compile time check if the following macro is defined:

 #define LIBNBD_HAVE_NBD_AIO_OPT_ABORT 1